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-rw-r--r--nest/Makefile10
-rw-r--r--nest/bird.h1
-rw-r--r--nest/cmds.c2
-rw-r--r--nest/config.Y263
-rw-r--r--nest/iface.c47
-rw-r--r--nest/iface.h6
-rw-r--r--nest/neighbor.c19
-rw-r--r--nest/password.h2
-rw-r--r--nest/proto-hooks.c2
-rw-r--r--nest/proto.c1915
-rw-r--r--nest/proto.sgml17
-rw-r--r--nest/protocol.h285
-rw-r--r--nest/route.h214
-rw-r--r--nest/rt-attr.c111
-rw-r--r--nest/rt-dev.c90
-rw-r--r--nest/rt-dev.h6
-rw-r--r--nest/rt-fib.c297
-rw-r--r--nest/rt-roa.c440
-rw-r--r--nest/rt-table.c878
19 files changed, 2197 insertions, 2408 deletions
diff --git a/nest/Makefile b/nest/Makefile
index e6928668..6f0f9a08 100644
--- a/nest/Makefile
+++ b/nest/Makefile
@@ -1,6 +1,4 @@
-source=rt-table.c rt-fib.c rt-attr.c rt-roa.c proto.c iface.c rt-dev.c password.c cli.c locks.c cmds.c neighbor.c \
- a-path.c a-set.c
-root-rel=../
-dir-name=nest
-
-include ../Rules
+src := a-path.c a-set.c cli.c cmds.c iface.c locks.c neighbor.c password.c proto.c rt-attr.c rt-dev.c rt-fib.c rt-table.c
+obj := $(src-o-files)
+$(all-daemon)
+$(cf-local)
diff --git a/nest/bird.h b/nest/bird.h
index 3c7d749b..55712abe 100644
--- a/nest/bird.h
+++ b/nest/bird.h
@@ -12,5 +12,6 @@
#include "sysdep/config.h"
#include "lib/birdlib.h"
#include "lib/ip.h"
+#include "lib/net.h"
#endif
diff --git a/nest/cmds.c b/nest/cmds.c
index 70fbdaf8..82fdca66 100644
--- a/nest/cmds.c
+++ b/nest/cmds.c
@@ -80,7 +80,6 @@ print_size(char *dsc, size_t val)
extern pool *rt_table_pool;
extern pool *rta_pool;
-extern pool *roa_pool;
extern pool *proto_pool;
void
@@ -89,7 +88,6 @@ cmd_show_memory(void)
cli_msg(-1018, "BIRD memory usage");
print_size("Routing tables:", rmemsize(rt_table_pool));
print_size("Route attributes:", rmemsize(rta_pool));
- print_size("ROA tables:", rmemsize(roa_pool));
print_size("Protocols:", rmemsize(proto_pool));
print_size("Total:", rmemsize(&root_pool));
cli_msg(0, "");
diff --git a/nest/config.Y b/nest/config.Y
index 4566971f..2961dafb 100644
--- a/nest/config.Y
+++ b/nest/config.Y
@@ -17,9 +17,10 @@ CF_HDR
CF_DEFINES
static struct proto_config *this_proto;
+static struct channel_config *this_channel;
static struct iface_patt *this_ipatt;
static struct iface_patt_node *this_ipn;
-static struct roa_table_config *this_roa_table;
+/* static struct roa_table_config *this_roa_table; */
static list *this_p_list;
static struct password_item *this_p_item;
static int password_id;
@@ -30,7 +31,7 @@ iface_patt_check(void)
struct iface_patt_node *pn;
WALK_LIST(pn, this_ipatt->ipn_list)
- if (!pn->pattern || pn->pxlen)
+ if (!pn->pattern || pn->prefix.type)
cf_error("Interface name/mask expected, not IP prefix");
}
@@ -49,15 +50,25 @@ get_passwords(void)
return rv;
}
+static void
+proto_postconfig(void)
+{
+ CALL(this_proto->protocol->postconfig, this_proto);
+ this_channel = NULL;
+ this_proto = NULL;
+}
+
+
#define DIRECT_CFG ((struct rt_dev_config *) this_proto)
CF_DECLS
CF_KEYWORDS(ROUTER, ID, PROTOCOL, TEMPLATE, PREFERENCE, DISABLED, DEBUG, ALL, OFF, DIRECT)
CF_KEYWORDS(INTERFACE, IMPORT, EXPORT, FILTER, NONE, TABLE, STATES, ROUTES, FILTERS)
+CF_KEYWORDS(IPV4, IPV6, VPN4, VPN6, ROA4, ROA6)
CF_KEYWORDS(RECEIVE, LIMIT, ACTION, WARN, BLOCK, RESTART, DISABLE, KEEP, FILTERED)
CF_KEYWORDS(PASSWORD, FROM, PASSIVE, TO, ID, EVENTS, PACKETS, PROTOCOLS, INTERFACES)
-CF_KEYWORDS(PRIMARY, STATS, COUNT, FOR, COMMANDS, PREEXPORT, NOEXPORT, GENERATE, ROA)
+CF_KEYWORDS(PRIMARY, STATS, COUNT, FOR, COMMANDS, PREEXPORT, NOEXPORT, GENERATE) /* ,ROA */
CF_KEYWORDS(LISTEN, BGP, V6ONLY, DUAL, ADDRESS, PORT, PASSWORDS, DESCRIPTION, SORTED)
CF_KEYWORDS(RELOAD, IN, OUT, MRTDUMP, MESSAGES, RESTRICT, MEMORY, IGP_METRIC, CLASS, DSCP)
CF_KEYWORDS(GRACEFUL, RESTART, WAIT, MAX, FLUSH, AS)
@@ -74,12 +85,11 @@ CF_ENUM(T_ENUM_ROA, ROA_, UNKNOWN, VALID, INVALID)
%type <r> rtable
%type <s> optsym
%type <ra> r_args
-%type <ro> roa_args
-%type <rot> roa_table_arg
%type <sd> sym_args
-%type <i> proto_start echo_mask echo_size debug_mask debug_list debug_flag mrtdump_mask mrtdump_list mrtdump_flag export_mode roa_mode limit_action tab_sorted tos
+%type <i> proto_start echo_mask echo_size debug_mask debug_list debug_flag mrtdump_mask mrtdump_list mrtdump_flag export_mode limit_action net_type table_sorted tos
%type <ps> proto_patt proto_patt2
-%type <g> limit_spec
+%type <cc> channel_start proto_channel
+%type <cl> limit_spec
CF_GRAMMAR
@@ -87,7 +97,7 @@ CF_GRAMMAR
CF_ADDTO(conf, rtrid)
-rtrid:
+rtrid:
ROUTER ID idval ';' { new_config->router_id = $3; }
| ROUTER ID FROM iface_patt ';' { new_config->router_id_from = this_ipatt; }
;
@@ -95,21 +105,12 @@ rtrid:
idval:
NUM { $$ = $1; }
| '(' term ')' { $$ = f_eval_int($2); }
- | RTRID
- | IPA {
-#ifndef IPV6
- $$ = ipa_to_u32($1);
-#else
- cf_error("Router IDs must be entered as hexadecimal numbers or IPv4 addresses in IPv6 version");
-#endif
- }
+ | IP4 { $$ = ip4_to_u32($1); }
| SYM {
if ($1->class == (SYM_CONSTANT | T_INT) || $1->class == (SYM_CONSTANT | T_QUAD))
$$ = SYM_VAL($1).i;
-#ifndef IPV6
- else if ($1->class == (SYM_CONSTANT | T_IP))
- $$ = ipa_to_u32(SYM_VAL($1).px.ip);
-#endif
+ else if (($1->class == (SYM_CONSTANT | T_IP)) && ipa_is_ip4(SYM_VAL($1).ip))
+ $$ = ipa_to_u32(SYM_VAL($1).ip);
else
cf_error("Number or IPv4 address constant expected");
}
@@ -125,7 +126,7 @@ listen_opts:
| listen_opts listen_opt
;
-listen_opt:
+listen_opt:
ADDRESS ipa { new_config->listen_bgp_addr = $2; }
| PORT expr { new_config->listen_bgp_port = $2; }
| V6ONLY { new_config->listen_bgp_flags = 0; }
@@ -138,43 +139,38 @@ CF_ADDTO(conf, gr_opts)
gr_opts: GRACEFUL RESTART WAIT expr ';' { new_config->gr_wait = $4; } ;
-/* Creation of routing tables */
+/* Network types (for tables, channels) */
-tab_sorted:
- { $$ = 0; }
- | SORTED { $$ = 1; }
+net_type:
+ IPV4 { $$ = NET_IP4; }
+ | IPV6 { $$ = NET_IP6; }
+ | VPN4 { $$ = NET_VPN4; }
+ | VPN6 { $$ = NET_VPN6; }
+ | ROA4 { $$ = NET_ROA4; }
+ | ROA6 { $$ = NET_ROA6; }
;
-CF_ADDTO(conf, newtab)
-newtab: TABLE SYM tab_sorted {
- struct rtable_config *cf;
- cf = rt_new_table($2);
- cf->sorted = $3;
- }
- ;
+/* Creation of routing tables */
-CF_ADDTO(conf, roa_table)
+CF_ADDTO(conf, table)
-roa_table_start: ROA TABLE SYM {
- this_roa_table = roa_new_table_config($3);
-};
+table_sorted:
+ { $$ = 0; }
+ | SORTED { $$ = 1; }
+ ;
-roa_table_opts:
- /* empty */
- | roa_table_opts ROA prefix MAX NUM AS NUM ';' {
- roa_add_item_config(this_roa_table, $3.addr, $3.len, $5, $7);
+table: net_type TABLE SYM table_sorted {
+ struct rtable_config *cf;
+ cf = rt_new_table($3, $1);
+ cf->sorted = $4;
}
;
-roa_table:
- roa_table_start
- | roa_table_start '{' roa_table_opts '}'
- ;
/* Definition of protocols */
-CF_ADDTO(conf, proto)
+CF_ADDTO(conf, proto { proto_postconfig(); })
proto_start:
PROTOCOL { $$ = SYM_PROTO; }
@@ -212,24 +208,62 @@ proto_name:
proto_item:
/* EMPTY */
- | PREFERENCE expr {
- if ($2 < 0 || $2 > 0xFFFF) cf_error("Invalid preference");
- this_proto->preference = $2;
- }
| DISABLED bool { this_proto->disabled = $2; }
| DEBUG debug_mask { this_proto->debug = $2; }
| MRTDUMP mrtdump_mask { this_proto->mrtdump = $2; }
- | IMPORT imexport { this_proto->in_filter = $2; }
- | EXPORT imexport { this_proto->out_filter = $2; }
- | RECEIVE LIMIT limit_spec { this_proto->rx_limit = $3; }
- | IMPORT LIMIT limit_spec { this_proto->in_limit = $3; }
- | EXPORT LIMIT limit_spec { this_proto->out_limit = $3; }
- | IMPORT KEEP FILTERED bool { this_proto->in_keep_filtered = $4; }
- | TABLE rtable { this_proto->table = $2; }
| ROUTER ID idval { this_proto->router_id = $3; }
| DESCRIPTION text { this_proto->dsc = $2; }
;
+
+channel_start: net_type
+{
+ $$ = this_channel = channel_config_new(NULL, $1, this_proto);
+};
+
+channel_item:
+ TABLE rtable {
+ if (this_channel->net_type && ($2->addr_type != this_channel->net_type))
+ cf_error("Incompatible table type");
+ this_channel->table = $2;
+ }
+ | IMPORT imexport { this_channel->in_filter = $2; }
+ | EXPORT imexport { this_channel->out_filter = $2; }
+ | RECEIVE LIMIT limit_spec { this_channel->rx_limit = $3; }
+ | IMPORT LIMIT limit_spec { this_channel->in_limit = $3; }
+ | EXPORT LIMIT limit_spec { this_channel->out_limit = $3; }
+ | PREFERENCE expr { this_channel->preference = $2; check_u16($2); }
+ | IMPORT KEEP FILTERED bool { this_channel->in_keep_filtered = $4; }
+ ;
+
+channel_opts:
+ /* empty */
+ | channel_opts channel_item ';'
+ ;
+
+channel_opt_list:
+ /* empty */
+ | '{' channel_opts '}'
+ ;
+
+channel_end:
+{
+ if (!this_channel->table)
+ cf_error("Routing table not specified");
+
+ this_channel = NULL;
+};
+
+proto_channel: channel_start channel_opt_list channel_end;
+
+
+rtable:
+ SYM {
+ if ($1->class != SYM_TABLE) cf_error("Table expected");
+ $$ = $1->def;
+ }
+ ;
+
imexport:
FILTER filter { $$ = $2; }
| where_filter
@@ -246,20 +280,8 @@ limit_action:
;
limit_spec:
- expr limit_action {
- struct proto_limit *l = cfg_allocz(sizeof(struct proto_limit));
- l->limit = $1;
- l->action = $2;
- $$ = l;
- }
- | OFF { $$ = NULL; }
- ;
-
-rtable:
- SYM {
- if ($1->class != SYM_TABLE) cf_error("Table name expected");
- $$ = $1->def;
- }
+ expr limit_action { $$ = (struct channel_limit){ .limit = $1, $$.action = $2 }; }
+ | OFF { $$ = (struct channel_limit){}; }
;
CF_ADDTO(conf, debug_default)
@@ -282,9 +304,8 @@ iface_patt_node_init:
;
iface_patt_node_body:
- TEXT { this_ipn->pattern = $1; this_ipn->prefix = IPA_NONE; this_ipn->pxlen = 0; }
- | prefix_or_ipa { this_ipn->pattern = NULL; this_ipn->prefix = $1.addr; this_ipn->pxlen = $1.len; }
- | TEXT prefix_or_ipa { this_ipn->pattern = $1; this_ipn->prefix = $2.addr; this_ipn->pxlen = $2.len; }
+ TEXT { this_ipn->pattern = $1; /* this_ipn->prefix stays zero */ }
+ | opttext net_or_ipa { this_ipn->pattern = $1; this_ipn->prefix = $2; }
;
iface_negate:
@@ -293,7 +314,7 @@ iface_negate:
;
iface_patt_node:
- iface_patt_node_init iface_negate iface_patt_node_body
+ iface_patt_node_init iface_negate iface_patt_node_body
;
@@ -334,6 +355,7 @@ dev_proto_start: proto_start DIRECT {
dev_proto:
dev_proto_start proto_name '{'
| dev_proto proto_item ';'
+ | dev_proto proto_channel ';'
| dev_proto dev_iface_patt ';'
| dev_proto CHECK LINK bool ';' { DIRECT_CFG->check_link = $4; }
;
@@ -426,7 +448,7 @@ password_item_begin:
;
password_item_params:
- /* empty */ { }
+ /* empty */ { }
| GENERATE FROM datetime ';' password_item_params { this_p_item->genfrom = $3; }
| GENERATE TO datetime ';' password_item_params { this_p_item->gento = $3; }
| ACCEPT FROM datetime ';' password_item_params { this_p_item->accfrom = $3; }
@@ -469,21 +491,19 @@ CF_CLI(SHOW ROUTE, r_args, [[[<prefix>|for <prefix>|for <ip>] [table <t>] [filte
r_args:
/* empty */ {
$$ = cfg_allocz(sizeof(struct rt_show_data));
- $$->pxlen = 256;
$$->filter = FILTER_ACCEPT;
}
- | r_args prefix {
+ | r_args net_any {
$$ = $1;
- if ($$->pxlen != 256) cf_error("Only one prefix expected");
- $$->prefix = $2.addr;
- $$->pxlen = $2.len;
+ if ($$->addr) cf_error("Only one prefix expected");
+ $$->addr = $2;
}
- | r_args FOR prefix_or_ipa {
+ | r_args FOR net_or_ipa {
$$ = $1;
- if ($$->pxlen != 256) cf_error("Only one prefix expected");
- $$->prefix = $3.addr;
- $$->pxlen = $3.len;
+ if ($$->addr) cf_error("Only one prefix expected");
$$->show_for = 1;
+ $$->addr = cfg_alloc($3.length);
+ net_copy($$->addr, &($3));
}
| r_args TABLE SYM {
$$ = $1;
@@ -546,45 +566,8 @@ export_mode:
;
-CF_CLI_HELP(SHOW ROA, ..., [[Show ROA table]])
-CF_CLI(SHOW ROA, roa_args, [<prefix> | in <prefix> | for <prefix>] [as <num>] [table <t>], [[Show ROA table]])
-{ roa_show($3); } ;
-
-roa_args:
- /* empty */ {
- $$ = cfg_allocz(sizeof(struct roa_show_data));
- $$->mode = ROA_SHOW_ALL;
- $$->table = roa_table_default;
- if (roa_table_default == NULL)
- cf_error("No ROA table defined");
- }
- | roa_args roa_mode prefix {
- $$ = $1;
- if ($$->mode != ROA_SHOW_ALL) cf_error("Only one prefix expected");
- $$->prefix = $3.addr;
- $$->pxlen = $3.len;
- $$->mode = $2;
- }
- | roa_args AS NUM {
- $$ = $1;
- $$->asn = $3;
- }
- | roa_args TABLE SYM {
- $$ = $1;
- if ($3->class != SYM_ROA) cf_error("%s is not a ROA table", $3->name);
- $$->table = ((struct roa_table_config *)$3->def)->table;
- }
- ;
-
-roa_mode:
- { $$ = ROA_SHOW_PX; }
- | IN { $$ = ROA_SHOW_IN; }
- | FOR { $$ = ROA_SHOW_FOR; }
- ;
-
-
CF_CLI_HELP(SHOW SYMBOLS, ..., [[Show all known symbolic names]])
-CF_CLI(SHOW SYMBOLS, sym_args, [table|filter|function|protocol|template|roa|<symbol>], [[Show all known symbolic names]])
+CF_CLI(SHOW SYMBOLS, sym_args, [table|filter|function|protocol|template|<symbol>], [[Show all known symbolic names]])
{ cmd_show_symbols($3); } ;
sym_args:
@@ -596,46 +579,10 @@ sym_args:
| sym_args FILTER { $$ = $1; $$->type = SYM_FILTER; }
| sym_args PROTOCOL { $$ = $1; $$->type = SYM_PROTO; }
| sym_args TEMPLATE { $$ = $1; $$->type = SYM_TEMPLATE; }
- | sym_args ROA { $$ = $1; $$->type = SYM_ROA; }
| sym_args SYM { $$ = $1; $$->sym = $2; }
;
-roa_table_arg:
- /* empty */ {
- if (roa_table_default == NULL)
- cf_error("No ROA table defined");
- $$ = roa_table_default;
- }
- | TABLE SYM {
- if ($2->class != SYM_ROA)
- cf_error("%s is not a ROA table", $2->name);
- $$ = ((struct roa_table_config *)$2->def)->table;
- }
- ;
-
-CF_CLI_HELP(ADD, roa ..., [[Add ROA record]])
-CF_CLI(ADD ROA, prefix MAX NUM AS NUM roa_table_arg, <prefix> max <num> as <num> [table <name>], [[Add ROA record]])
-{
- if (! cli_access_restricted())
- { roa_add_item($8, $3.addr, $3.len, $5, $7, ROA_SRC_DYNAMIC); cli_msg(0, ""); }
-};
-
-CF_CLI_HELP(DELETE, roa ..., [[Delete ROA record]])
-CF_CLI(DELETE ROA, prefix MAX NUM AS NUM roa_table_arg, <prefix> max <num> as <num> [table <name>], [[Delete ROA record]])
-{
- if (! cli_access_restricted())
- { roa_delete_item($8, $3.addr, $3.len, $5, $7, ROA_SRC_DYNAMIC); cli_msg(0, ""); }
-};
-
-CF_CLI_HELP(FLUSH, roa [table <name>], [[Removes all dynamic ROA records]])
-CF_CLI(FLUSH ROA, roa_table_arg, [table <name>], [[Removes all dynamic ROA records]])
-{
- if (! cli_access_restricted())
- { roa_flush($3, ROA_SRC_DYNAMIC); cli_msg(0, ""); }
-};
-
-
CF_CLI_HELP(DUMP, ..., [[Dump debugging information]])
CF_CLI(DUMP RESOURCES,,, [[Dump all allocated resource]])
{ rdump(&root_pool); cli_msg(0, ""); } ;
diff --git a/nest/iface.c b/nest/iface.c
index 4d73c2a4..00af5052 100644
--- a/nest/iface.c
+++ b/nest/iface.c
@@ -46,7 +46,7 @@ list iface_list;
void
ifa_dump(struct ifa *a)
{
- debug("\t%I, net %I/%-2d bc %I -> %I%s%s%s\n", a->ip, a->prefix, a->pxlen, a->brd, a->opposite,
+ debug("\t%I, net %N bc %I -> %I%s%s%s\n", a->ip, &a->prefix, a->brd, a->opposite,
(a->flags & IF_UP) ? "" : " DOWN",
(a->flags & IA_PRIMARY) ? "" : " SEC",
(a->flags & IA_PEER) ? "PEER" : "");
@@ -138,13 +138,12 @@ if_copy(struct iface *to, struct iface *from)
static inline void
ifa_send_notify(struct proto *p, unsigned c, struct ifa *a)
{
- if (p->ifa_notify)
+ if (p->ifa_notify && (p->proto_state != PS_DOWN))
{
if (p->debug & D_IFACES)
- log(L_TRACE "%s < %s address %I/%d on interface %s %s",
+ log(L_TRACE "%s < %s address %N on interface %s %s",
p->name, (a->flags & IA_PRIMARY) ? "primary" : "secondary",
- a->prefix, a->pxlen, a->iface->name,
- (c & IF_CHANGE_UP) ? "added" : "removed");
+ &a->prefix, a->iface->name, (c & IF_CHANGE_UP) ? "added" : "removed");
p->ifa_notify(p, c, a);
}
}
@@ -156,7 +155,7 @@ ifa_notify_change_(unsigned c, struct ifa *a)
DBG("IFA change notification (%x) for %s:%I\n", c, a->iface->name, a->ip);
- WALK_LIST(p, active_proto_list)
+ WALK_LIST(p, proto_list)
ifa_send_notify(p, c, a);
}
@@ -175,7 +174,7 @@ ifa_notify_change(unsigned c, struct ifa *a)
static inline void
if_send_notify(struct proto *p, unsigned c, struct iface *i)
{
- if (p->if_notify)
+ if (p->if_notify && (p->proto_state != PS_DOWN))
{
if (p->debug & D_IFACES)
log(L_TRACE "%s < interface %s %s", p->name, i->name,
@@ -216,7 +215,7 @@ if_notify_change(unsigned c, struct iface *i)
ifa_notify_change_(IF_CHANGE_DOWN, a);
}
- WALK_LIST(p, active_proto_list)
+ WALK_LIST(p, proto_list)
if_send_notify(p, c, i);
if (c & IF_CHANGE_UP)
@@ -500,8 +499,7 @@ ifa_recalc_all_primary_addresses(void)
static inline int
ifa_same(struct ifa *a, struct ifa *b)
{
- return ipa_equal(a->ip, b->ip) && ipa_equal(a->prefix, b->prefix) &&
- a->pxlen == b->pxlen;
+ return ipa_equal(a->ip, b->ip) && net_equal(&a->prefix, &b->prefix);
}
@@ -534,10 +532,8 @@ ifa_update(struct ifa *a)
break;
}
-#ifndef IPV6
- if ((i->flags & IF_BROADCAST) && !ipa_nonzero(a->brd))
+ if ((a->prefix.type == NET_IP4) && (i->flags & IF_BROADCAST) && ipa_zero(a->brd))
log(L_ERR "Missing broadcast address for interface %s", i->name);
-#endif
b = mb_alloc(if_pool, sizeof(struct ifa));
memcpy(b, a, sizeof(struct ifa));
@@ -586,7 +582,6 @@ ifa_delete(struct ifa *a)
u32
if_choose_router_id(struct iface_patt *mask, u32 old_id)
{
-#ifndef IPV6
struct iface *i;
struct ifa *a, *b;
@@ -599,6 +594,9 @@ if_choose_router_id(struct iface_patt *mask, u32 old_id)
WALK_LIST(a, i->addrs)
{
+ if (a->prefix.type != NET_IP4)
+ continue;
+
if (a->flags & IA_SECONDARY)
continue;
@@ -623,10 +621,6 @@ if_choose_router_id(struct iface_patt *mask, u32 old_id)
log(L_INFO "Chosen router ID %R according to interface %s", id, b->iface->name);
return id;
-
-#else
- return 0;
-#endif
}
/**
@@ -669,17 +663,17 @@ iface_patt_match(struct iface_patt *ifp, struct iface *i, struct ifa *a)
continue;
}
- if (p->pxlen == 0)
+ if (p->prefix.pxlen == 0)
return pos;
if (!a)
continue;
- if (ipa_in_net(a->ip, p->prefix, p->pxlen))
+ if (ipa_in_netX(a->ip, &p->prefix))
return pos;
if ((a->flags & IA_PEER) &&
- ipa_in_net(a->opposite, p->prefix, p->pxlen))
+ ipa_in_netX(a->opposite, &p->prefix))
return pos;
continue;
@@ -713,8 +707,7 @@ iface_plists_equal(struct iface_patt *pa, struct iface_patt *pb)
(!x->pattern && y->pattern) || /* This nasty lines where written by me... :-( Feela */
(!y->pattern && x->pattern) ||
((x->pattern != y->pattern) && strcmp(x->pattern, y->pattern)) ||
- !ipa_equal(x->prefix, y->prefix) ||
- (x->pxlen != y->pxlen))
+ !net_equal(&x->prefix, &y->prefix))
return 0;
x = (void *) x->n.next;
y = (void *) y->n.next;
@@ -747,14 +740,14 @@ iface_patts_equal(list *a, list *b, int (*comp)(struct iface_patt *, struct ifac
static void
if_show_addr(struct ifa *a)
{
- byte opp[STD_ADDRESS_P_LENGTH + 16];
+ byte opp[IPA_MAX_TEXT_LENGTH + 16];
if (ipa_nonzero(a->opposite))
bsprintf(opp, ", opposite %I", a->opposite);
else
opp[0] = 0;
cli_msg(-1003, "\t%I/%d (%s%s, scope %s)",
- a->ip, a->pxlen,
+ a->ip, a->prefix.pxlen,
(a->flags & IA_PRIMARY) ? "Primary" : (a->flags & IA_SECONDARY) ? "Secondary" : "Unselected",
opp, ip_scope_text(a->scope));
}
@@ -798,13 +791,13 @@ void
if_show_summary(void)
{
struct iface *i;
- byte addr[STD_ADDRESS_P_LENGTH + 16];
+ byte addr[IPA_MAX_TEXT_LENGTH + 16];
cli_msg(-2005, "interface state address");
WALK_LIST(i, iface_list)
{
if (i->addr)
- bsprintf(addr, "%I/%d", i->addr->ip, i->addr->pxlen);
+ bsprintf(addr, "%I/%d", i->addr->ip, i->addr->prefix.pxlen);
else
addr[0] = 0;
cli_msg(-1005, "%-9s %-5s %s", i->name, (i->flags & IF_UP) ? "up" : "DOWN", addr);
diff --git a/nest/iface.h b/nest/iface.h
index 56710e4a..c4f414ec 100644
--- a/nest/iface.h
+++ b/nest/iface.h
@@ -19,9 +19,8 @@ struct pool;
struct ifa { /* Interface address */
node n;
struct iface *iface; /* Interface this address belongs to */
+ net_addr prefix; /* Network prefix */
ip_addr ip; /* IP address of this host */
- ip_addr prefix; /* Network prefix */
- unsigned pxlen; /* Prefix length */
ip_addr brd; /* Broadcast address */
ip_addr opposite; /* Opposite end of a point-to-point link */
unsigned scope; /* Interface address scope */
@@ -148,8 +147,7 @@ struct iface_patt_node {
node n;
int positive;
byte *pattern;
- ip_addr prefix;
- int pxlen;
+ net_addr prefix;
};
struct iface_patt {
diff --git a/nest/neighbor.c b/nest/neighbor.c
index d974fa51..2c7f9b84 100644
--- a/nest/neighbor.c
+++ b/nest/neighbor.c
@@ -45,6 +45,7 @@
#include "lib/resource.h"
#define NEIGH_HASH_SIZE 256
+#define NEIGH_HASH_OFFSET 24
static slab *neigh_slab;
static list sticky_neigh_list, neigh_hash_table[NEIGH_HASH_SIZE];
@@ -52,7 +53,7 @@ static list sticky_neigh_list, neigh_hash_table[NEIGH_HASH_SIZE];
static inline uint
neigh_hash(struct proto *p, ip_addr *a)
{
- return (p->hash_key ^ ipa_hash(*a)) & (NEIGH_HASH_SIZE-1);
+ return (p->hash_key ^ ipa_hash(*a)) >> NEIGH_HASH_OFFSET;
}
static int
@@ -79,17 +80,17 @@ if_connected(ip_addr *a, struct iface *i, struct ifa **ap)
}
else
{
- if (ipa_in_net(*a, b->prefix, b->pxlen))
+ if (ipa_in_netX(*a, &b->prefix))
{
-#ifndef IPV6
- if ((b->pxlen < (BITS_PER_IP_ADDRESS - 1)) &&
- (ipa_equal(*a, b->prefix) || /* Network address */
+ /* Do not allow IPv4 network and broadcast addresses */
+ if (ipa_is_ip4(*a) &&
+ (net_pxlen(&b->prefix) < (IP4_MAX_PREFIX_LENGTH - 1)) &&
+ (ipa_equal(*a, net_prefix(&b->prefix)) || /* Network address */
ipa_equal(*a, b->brd))) /* Broadcast */
{
*ap = NULL;
return -1;
}
-#endif
return b->scope;
}
@@ -238,7 +239,7 @@ neigh_up(neighbor *n, struct iface *i, int scope, struct ifa *a)
rem_node(&n->n);
add_tail(&neigh_hash_table[neigh_hash(n->proto, &n->addr)], &n->n);
DBG("Waking up sticky neighbor %I\n", n->addr);
- if (n->proto->neigh_notify && n->proto->core_state != FS_FLUSHING)
+ if (n->proto->neigh_notify && (n->proto->proto_state != PS_STOP))
n->proto->neigh_notify(n);
}
@@ -251,7 +252,7 @@ neigh_down(neighbor *n)
n->iface = NULL;
n->ifa = NULL;
n->scope = -1;
- if (n->proto->neigh_notify && n->proto->core_state != FS_FLUSHING)
+ if (n->proto->neigh_notify && (n->proto->proto_state != PS_STOP))
n->proto->neigh_notify(n);
rem_node(&n->n);
if (n->flags & NEF_STICKY)
@@ -332,7 +333,7 @@ neigh_if_link(struct iface *i)
WALK_LIST_DELSAFE(x, y, i->neighbors)
{
neighbor *n = SKIP_BACK(neighbor, if_n, x);
- if (n->proto->neigh_notify && n->proto->core_state != FS_FLUSHING)
+ if (n->proto->neigh_notify && (n->proto->proto_state != PS_STOP))
n->proto->neigh_notify(n);
}
}
diff --git a/nest/password.h b/nest/password.h
index 1d9de53c..cbf80b99 100644
--- a/nest/password.h
+++ b/nest/password.h
@@ -9,7 +9,7 @@
#ifndef PASSWORD_H
#define PASSWORD_H
-#include "lib/timer.h"
+#include "sysdep/unix/timer.h"
struct password_item {
node n;
diff --git a/nest/proto-hooks.c b/nest/proto-hooks.c
index 7395b45e..92863f8e 100644
--- a/nest/proto-hooks.c
+++ b/nest/proto-hooks.c
@@ -190,7 +190,7 @@ void ifa_notify(struct proto *p, unsigned flags, struct ifa *a)
/**
* rt_notify - notify instance about routing table change
* @p: protocol instance
- * @table: a routing table
+ * @channel: notifying channel
* @net: a network entry
* @new: new route for the network
* @old: old route for the network
diff --git a/nest/proto.c b/nest/proto.c
index 1091b321..f2416748 100644
--- a/nest/proto.c
+++ b/nest/proto.c
@@ -21,19 +21,12 @@
#include "filter/filter.h"
pool *proto_pool;
+list proto_list;
static list protocol_list;
-static list proto_list;
#define PD(pr, msg, args...) do { if (pr->debug & D_STATES) { log(L_TRACE "%s: " msg, pr->name , ## args); } } while(0)
-list active_proto_list;
-static list inactive_proto_list;
-static list initial_proto_list;
-static list flush_proto_list;
-static struct proto *initial_device_proto;
-
-static event *proto_flush_event;
static timer *proto_shutdown_timer;
static timer *gr_wait_timer;
@@ -46,199 +39,636 @@ static int graceful_restart_state;
static u32 graceful_restart_locks;
static char *p_states[] = { "DOWN", "START", "UP", "STOP" };
-static char *c_states[] = { "HUNGRY", "???", "HAPPY", "FLUSHING" };
+static char *c_states[] UNUSED = { "DOWN", "START", "UP", "FLUSHING" };
+
+extern struct protocol proto_unix_iface;
-static void proto_flush_loop(void *);
static void proto_shutdown_loop(struct timer *);
static void proto_rethink_goal(struct proto *p);
-static void proto_want_export_up(struct proto *p);
-static void proto_fell_down(struct proto *p);
static char *proto_state_name(struct proto *p);
+static void channel_verify_limits(struct channel *c);
+static void channel_reset_limit(struct channel_limit *l);
-static void
-proto_relink(struct proto *p)
-{
- list *l = NULL;
- switch (p->core_state)
- {
- case FS_HUNGRY:
- l = &inactive_proto_list;
- break;
- case FS_HAPPY:
- l = &active_proto_list;
- break;
- case FS_FLUSHING:
- l = &flush_proto_list;
- break;
- default:
- ASSERT(0);
- }
+static inline int proto_is_done(struct proto *p)
+{ return (p->proto_state == PS_DOWN) && (p->active_channels == 0); }
- rem_node(&p->n);
- add_tail(l, &p->n);
-}
+static inline int channel_is_active(struct channel *c)
+{ return (c->channel_state == CS_START) || (c->channel_state == CS_UP); }
static void
proto_log_state_change(struct proto *p)
{
if (p->debug & D_STATES)
+ {
+ char *name = proto_state_name(p);
+ if (name != p->last_state_name_announced)
{
- char *name = proto_state_name(p);
- if (name != p->last_state_name_announced)
- {
- p->last_state_name_announced = name;
- PD(p, "State changed to %s", proto_state_name(p));
- }
+ p->last_state_name_announced = name;
+ PD(p, "State changed to %s", proto_state_name(p));
}
+ }
else
p->last_state_name_announced = NULL;
}
-/**
- * proto_new - create a new protocol instance
- * @c: protocol configuration
- * @size: size of protocol data structure (each protocol instance is represented by
- * a structure starting with generic part [struct &proto] and continued
- * with data specific to the protocol)
- *
- * When a new configuration has been read in, the core code starts
- * initializing all the protocol instances configured by calling their
- * init() hooks with the corresponding instance configuration. The initialization
- * code of the protocol is expected to create a new instance according to the
- * configuration by calling this function and then modifying the default settings
- * to values wanted by the protocol.
- */
-void *
-proto_new(struct proto_config *c, unsigned size)
+struct channel_config *
+proto_cf_find_channel(struct proto_config *pc, uint net_type)
{
- struct protocol *pr = c->protocol;
- struct proto *p = mb_allocz(proto_pool, size);
-
- p->cf = c;
- p->debug = c->debug;
- p->mrtdump = c->mrtdump;
- p->name = c->name;
- p->preference = c->preference;
- p->disabled = c->disabled;
- p->proto = pr;
- p->table = c->table->table;
- p->hash_key = random_u32();
- c->proto = p;
- return p;
+ struct channel_config *cc;
+
+ WALK_LIST(cc, pc->channels)
+ if (cc->net_type == net_type)
+ return cc;
+
+ return NULL;
}
-static void
-proto_init_instance(struct proto *p)
+/**
+ * proto_find_channel_by_table - find channel connected to a routing table
+ * @p: protocol instance
+ * @t: routing table
+ *
+ * Returns pointer to channel or NULL
+ */
+struct channel *
+proto_find_channel_by_table(struct proto *p, struct rtable *t)
{
- /* Here we cannot use p->cf->name since it won't survive reconfiguration */
- p->pool = rp_new(proto_pool, p->proto->name);
- p->attn = ev_new(p->pool);
- p->attn->data = p;
+ struct channel *c;
- if (graceful_restart_state == GRS_INIT)
- p->gr_recovery = 1;
+ WALK_LIST(c, p->channels)
+ if (c->table == t)
+ return c;
- if (! p->proto->multitable)
- rt_lock_table(p->table);
+ return NULL;
}
-extern pool *rt_table_pool;
/**
- * proto_add_announce_hook - connect protocol to a routing table
+ * proto_add_channel - connect protocol to a routing table
* @p: protocol instance
- * @t: routing table to connect to
- * @stats: per-table protocol statistics
- *
- * This function creates a connection between the protocol instance @p and the
- * routing table @t, making the protocol hear all changes in the table.
+ * @cf: channel configuration
*
- * The announce hook is linked in the protocol ahook list. Announce hooks are
- * allocated from the routing table resource pool and when protocol accepts
- * routes also in the table ahook list. The are linked to the table ahook list
- * and unlinked from it depending on export_state (in proto_want_export_up() and
- * proto_want_export_down()) and they are automatically freed after the protocol
- * is flushed (in proto_fell_down()).
+ * This function creates a channel between the protocol instance @p and the
+ * routing table specified in the configuration @cf, making the protocol hear
+ * all changes in the table and allowing the protocol to update routes in the
+ * table.
*
- * Unless you want to listen to multiple routing tables (as the Pipe protocol
- * does), you needn't to worry about this function since the connection to the
- * protocol's primary routing table is initialized automatically by the core
- * code.
+ * The channel is linked in the protocol channel list and when active also in
+ * the table channel list. Channels are allocated from the global resource pool
+ * (@proto_pool) and they are automatically freed when the protocol is removed.
*/
-struct announce_hook *
-proto_add_announce_hook(struct proto *p, struct rtable *t, struct proto_stats *stats)
+
+struct channel *
+proto_add_channel(struct proto *p, struct channel_config *cf)
{
- struct announce_hook *h;
+ struct channel *c = mb_allocz(proto_pool, cf->channel->channel_size);
+
+ c->name = cf->name;
+ c->channel = cf->channel;
+ c->proto = p;
+ c->table = cf->table->table;
+
+ c->in_filter = cf->in_filter;
+ c->out_filter = cf->out_filter;
+ c->rx_limit = cf->rx_limit;
+ c->in_limit = cf->in_limit;
+ c->out_limit = cf->out_limit;
+
+ c->net_type = cf->net_type;
+ c->ra_mode = cf->ra_mode;
+ c->preference = cf->preference;
+ c->merge_limit = cf->merge_limit;
+ c->in_keep_filtered = cf->in_keep_filtered;
+
+ c->channel_state = CS_DOWN;
+ c->export_state = ES_DOWN;
+ c->last_state_change = now;
+ c->reloadable = 1;
+
+ CALL(c->channel->init, c, cf);
+
+ add_tail(&p->channels, &c->n);
+
+ PD(p, "Channel %s connected to table %s", c->name, c->table->name);
+
+ return c;
+}
+
+void
+proto_remove_channel(struct proto *p, struct channel *c)
+{
+ ASSERT(c->channel_state == CS_DOWN);
+
+ PD(p, "Channel %s removed", c->name);
+
+ rem_node(&c->n);
+ mb_free(c);
+}
- DBG("Connecting protocol %s to table %s\n", p->name, t->name);
- PD(p, "Connected to table %s", t->name);
- h = mb_allocz(rt_table_pool, sizeof(struct announce_hook));
- h->table = t;
- h->proto = p;
- h->stats = stats;
+static void
+proto_start_channels(struct proto *p)
+{
+ struct channel *c;
+ WALK_LIST(c, p->channels)
+ if (!c->disabled)
+ channel_set_state(c, CS_UP);
+}
- h->next = p->ahooks;
- p->ahooks = h;
+static void
+proto_pause_channels(struct proto *p)
+{
+ struct channel *c;
+ WALK_LIST(c, p->channels)
+ if (!c->disabled && channel_is_active(c))
+ channel_set_state(c, CS_START);
+}
- if (p->rt_notify && (p->export_state != ES_DOWN))
- add_tail(&t->hooks, &h->n);
- return h;
+static void
+proto_stop_channels(struct proto *p)
+{
+ struct channel *c;
+ WALK_LIST(c, p->channels)
+ if (!c->disabled && channel_is_active(c))
+ channel_set_state(c, CS_FLUSHING);
+}
+
+static void
+proto_remove_channels(struct proto *p)
+{
+ struct channel *c;
+ WALK_LIST_FIRST(c, p->channels)
+ proto_remove_channel(p, c);
+}
+
+static void
+channel_schedule_feed(struct channel *c, int initial)
+{
+ // DBG("%s: Scheduling meal\n", p->name);
+ ASSERT(c->channel_state == CS_UP);
+
+ c->export_state = ES_FEEDING;
+ c->refeeding = !initial;
+
+ ev_schedule(c->feed_event);
+}
+
+static void
+channel_feed_loop(void *ptr)
+{
+ struct channel *c = ptr;
+
+ if (c->export_state != ES_FEEDING)
+ return;
+
+ if (!c->feed_active)
+ if (c->proto->feed_begin)
+ c->proto->feed_begin(c, !c->refeeding);
+
+ // DBG("Feeding protocol %s continued\n", p->name);
+ if (!rt_feed_channel(c))
+ {
+ ev_schedule(c->feed_event);
+ return;
+ }
+
+ // DBG("Feeding protocol %s finished\n", p->name);
+ c->export_state = ES_READY;
+ // proto_log_state_change(p);
+
+ if (c->proto->feed_end)
+ c->proto->feed_end(c);
+}
+
+
+static void
+channel_start_export(struct channel *c)
+{
+ ASSERT(c->channel_state == CS_UP);
+ ASSERT(c->export_state == ES_DOWN);
+
+ channel_schedule_feed(c, 1); /* Sets ES_FEEDING */
+}
+
+static void
+channel_stop_export(struct channel *c)
+{
+ /* Need to abort feeding */
+ if (c->export_state == ES_FEEDING)
+ rt_feed_channel_abort(c);
+
+ c->export_state = ES_DOWN;
+ c->stats.exp_routes = 0;
+}
+
+static void
+channel_do_start(struct channel *c)
+{
+ rt_lock_table(c->table);
+ add_tail(&c->table->channels, &c->table_node);
+ c->proto->active_channels++;
+
+ c->feed_event = ev_new(c->proto->pool);
+ c->feed_event->data = c;
+ c->feed_event->hook = channel_feed_loop;
+
+ channel_reset_limit(&c->rx_limit);
+ channel_reset_limit(&c->in_limit);
+ channel_reset_limit(&c->out_limit);
+
+ CALL(c->channel->start, c);
+}
+
+static void
+channel_do_flush(struct channel *c)
+{
+ rt_schedule_prune(c->table);
+
+ c->gr_wait = 0;
+ if (c->gr_lock)
+ channel_graceful_restart_unlock(c);
+
+ CALL(c->channel->shutdown, c);
+}
+
+static void
+channel_do_down(struct channel *c)
+{
+ rem_node(&c->table_node);
+ rt_unlock_table(c->table);
+ c->proto->active_channels--;
+
+ if ((c->stats.imp_routes + c->stats.filt_routes) != 0)
+ log(L_ERR "%s: Channel %s is down but still has some routes", c->proto->name, c->name);
+
+ memset(&c->stats, 0, sizeof(struct proto_stats));
+
+ /* Schedule protocol shutddown */
+ if (proto_is_done(c->proto))
+ ev_schedule(c->proto->event);
+}
+
+void
+channel_set_state(struct channel *c, uint state)
+{
+ uint cs = c->channel_state;
+ uint es = c->export_state;
+
+ DBG("%s reporting channel %s state transition %s -> %s\n", c->proto->name, c->name, c_states[cs], c_states[state]);
+ if (state == cs)
+ return;
+
+ c->channel_state = state;
+ c->last_state_change = now;
+
+ switch (state)
+ {
+ case CS_START:
+ ASSERT(cs == CS_DOWN || cs == CS_UP);
+
+ if (cs == CS_DOWN)
+ channel_do_start(c);
+
+ if (es != ES_DOWN)
+ channel_stop_export(c);
+
+ break;
+
+ case CS_UP:
+ ASSERT(cs == CS_DOWN || cs == CS_START);
+
+ if (cs == CS_DOWN)
+ channel_do_start(c);
+
+ if (!c->gr_wait && c->proto->rt_notify)
+ channel_start_export(c);
+
+ break;
+
+ case CS_FLUSHING:
+ ASSERT(cs == CS_START || cs == CS_UP);
+
+ if (es != ES_DOWN)
+ channel_stop_export(c);
+
+ channel_do_flush(c);
+ break;
+
+ case CS_DOWN:
+ ASSERT(cs == CS_FLUSHING);
+
+ channel_do_down(c);
+ break;
+
+ default:
+ ASSERT(0);
+ }
+ // XXXX proto_log_state_change(c);
}
/**
- * proto_find_announce_hook - find announce hooks
- * @p: protocol instance
- * @t: routing table
+ * channel_request_feeding - request feeding routes to the channel
+ * @c: given channel
*
- * Returns pointer to announce hook or NULL
+ * Sometimes it is needed to send again all routes to the channel. This is
+ * called feeding and can be requested by this function. This would cause
+ * channel export state transition to ES_FEEDING (during feeding) and when
+ * completed, it will switch back to ES_READY. This function can be called
+ * even when feeding is already running, in that case it is restarted.
*/
-struct announce_hook *
-proto_find_announce_hook(struct proto *p, struct rtable *t)
+void
+channel_request_feeding(struct channel *c)
{
- struct announce_hook *a;
+ ASSERT(c->channel_state == CS_UP);
- for (a = p->ahooks; a; a = a->next)
- if (a->table == t)
- return a;
+ /* Do nothing if we are still waiting for feeding */
+ if (c->export_state == ES_DOWN)
+ return;
- return NULL;
+ /* If we are already feeding, we want to restart it */
+ if (c->export_state == ES_FEEDING)
+ {
+ /* Unless feeding is in initial state */
+ if (!c->feed_active)
+ return;
+
+ rt_feed_channel_abort(c);
+ }
+
+ channel_reset_limit(&c->out_limit);
+
+ /* Hack: reset exp_routes during refeed, and do not decrease it later */
+ c->stats.exp_routes = 0;
+
+ channel_schedule_feed(c, 0); /* Sets ES_FEEDING */
+ // proto_log_state_change(c);
+}
+
+static inline int
+channel_reloadable(struct channel *c)
+{
+ return c->proto->reload_routes && c->reloadable;
}
static void
-proto_link_ahooks(struct proto *p)
+channel_request_reload(struct channel *c)
{
- struct announce_hook *h;
+ ASSERT(c->channel_state == CS_UP);
+ // ASSERT(channel_reloadable(c));
+
+ c->proto->reload_routes(c);
- if (p->rt_notify)
- for(h=p->ahooks; h; h=h->next)
- add_tail(&h->table->hooks, &h->n);
+ /*
+ * Should this be done before reload_routes() hook?
+ * Perhaps, but routes are updated asynchronously.
+ */
+ channel_reset_limit(&c->rx_limit);
+ channel_reset_limit(&c->in_limit);
}
-static void
-proto_unlink_ahooks(struct proto *p)
+const struct channel_class channel_basic = {
+ .channel_size = sizeof(struct channel),
+ .config_size = sizeof(struct channel_config)
+};
+
+void *
+channel_config_new(const struct channel_class *cc, uint net_type, struct proto_config *proto)
+{
+ struct channel_config *cf = NULL;
+ struct rtable_config *tab = NULL;
+ const char *name = NULL;
+
+ if (net_type)
+ {
+ if (!net_val_match(net_type, proto->protocol->channel_mask))
+ cf_error("Unsupported channel type");
+
+ if (proto->net_type && (net_type != proto->net_type))
+ cf_error("Different channel type");
+
+ tab = new_config->def_tables[net_type];
+ name = net_label[net_type];
+ }
+
+ if (!cc)
+ cc = &channel_basic;
+
+ cf = cfg_allocz(cc->config_size);
+ cf->name = name;
+ cf->channel = cc;
+ cf->table = tab;
+ cf->out_filter = FILTER_REJECT;
+
+ cf->net_type = net_type;
+ cf->ra_mode = RA_OPTIMAL;
+ cf->preference = proto->protocol->preference;
+
+ add_tail(&proto->channels, &cf->n);
+
+ return cf;
+}
+
+struct channel_config *
+channel_copy_config(struct channel_config *src, struct proto_config *proto)
{
- struct announce_hook *h;
+ struct channel_config *dst = cfg_alloc(src->channel->config_size);
+
+ memcpy(dst, src, src->channel->config_size);
+ add_tail(&proto->channels, &dst->n);
+ CALL(src->channel->copy_config, dst, src);
+
+ return dst;
+}
+
+
+static int reconfigure_type; /* Hack to propagate type info to channel_reconfigure() */
+
+int
+channel_reconfigure(struct channel *c, struct channel_config *cf)
+{
+ /* FIXME: better handle these changes, also handle in_keep_filtered */
+ if ((c->table != cf->table->table) || (c->ra_mode != cf->ra_mode))
+ return 0;
- if (p->rt_notify)
- for(h=p->ahooks; h; h=h->next)
- rem_node(&h->n);
+ int import_changed = !filter_same(c->in_filter, cf->in_filter);
+ int export_changed = !filter_same(c->out_filter, cf->out_filter);
+
+ if (c->preference != cf->preference)
+ import_changed = 1;
+
+ if (c->merge_limit != cf->merge_limit)
+ export_changed = 1;
+
+ /* Reconfigure channel fields */
+ c->in_filter = cf->in_filter;
+ c->out_filter = cf->out_filter;
+ c->rx_limit = cf->rx_limit;
+ c->in_limit = cf->in_limit;
+ c->out_limit = cf->out_limit;
+
+ // c->ra_mode = cf->ra_mode;
+ c->merge_limit = cf->merge_limit;
+ c->preference = cf->preference;
+ c->in_keep_filtered = cf->in_keep_filtered;
+
+ channel_verify_limits(c);
+
+ CALL(c->channel->reconfigure, c, cf);
+
+ /* If the channel is not open, it has no routes and we cannot reload it anyways */
+ if (c->channel_state != CS_UP)
+ return 1;
+
+ if (reconfigure_type == RECONFIG_SOFT)
+ {
+ if (import_changed)
+ log(L_INFO "Channel %s.%s changed import", c->proto->name, c->name);
+
+ if (export_changed)
+ log(L_INFO "Channel %s.%s changed export", c->proto->name, c->name);
+
+ return 1;
+ }
+
+ /* Route reload may be not supported */
+ if (import_changed && !channel_reloadable(c))
+ return 0;
+
+ if (import_changed || export_changed)
+ log(L_INFO "Reloading channel %s.%s", c->proto->name, c->name);
+
+ if (import_changed)
+ channel_request_reload(c);
+
+ if (export_changed)
+ channel_request_feeding(c);
+
+ return 1;
}
+
+int
+proto_configure_channel(struct proto *p, struct channel **pc, struct channel_config *cf)
+{
+ struct channel *c = *pc;
+
+ if (!c && cf)
+ {
+ *pc = proto_add_channel(p, cf);
+ }
+ else if (c && !cf)
+ {
+ if (c->channel_state != CS_DOWN)
+ {
+ log(L_INFO "Cannot remove channel %s.%s", c->proto->name, c->name);
+ return 0;
+ }
+
+ proto_remove_channel(p, c);
+ *pc = NULL;
+ }
+ else if (c && cf)
+ {
+ if (!channel_reconfigure(c, cf))
+ {
+ log(L_INFO "Cannot reconfigure channel %s.%s", c->proto->name, c->name);
+ return 0;
+ }
+ }
+
+ return 1;
+}
+
+
static void
-proto_free_ahooks(struct proto *p)
+proto_event(void *ptr)
{
- struct announce_hook *h, *hn;
+ struct proto *p = ptr;
- for(h = p->ahooks; h; h = hn)
+ if (p->do_start)
{
- hn = h->next;
- mb_free(h);
+ if_feed_baby(p);
+ p->do_start = 0;
}
- p->ahooks = NULL;
- p->main_ahook = NULL;
+ if (p->do_stop)
+ {
+ if (p->proto == &proto_unix_iface)
+ if_flush_ifaces(p);
+ p->do_stop = 0;
+ }
+
+ if (proto_is_done(p))
+ {
+ if (p->proto->cleanup)
+ p->proto->cleanup(p);
+
+ p->active = 0;
+ proto_log_state_change(p);
+ proto_rethink_goal(p);
+ }
+}
+
+
+/**
+ * proto_new - create a new protocol instance
+ * @c: protocol configuration
+ *
+ * When a new configuration has been read in, the core code starts
+ * initializing all the protocol instances configured by calling their
+ * init() hooks with the corresponding instance configuration. The initialization
+ * code of the protocol is expected to create a new instance according to the
+ * configuration by calling this function and then modifying the default settings
+ * to values wanted by the protocol.
+ */
+void *
+proto_new(struct proto_config *cf)
+{
+ struct proto *p = mb_allocz(proto_pool, cf->protocol->proto_size);
+
+ p->cf = cf;
+ p->debug = cf->debug;
+ p->mrtdump = cf->mrtdump;
+ p->name = cf->name;
+ p->proto = cf->protocol;
+ p->net_type = cf->net_type;
+ p->disabled = cf->disabled;
+ p->hash_key = random_u32();
+ cf->proto = p;
+
+ init_list(&p->channels);
+
+ return p;
+}
+
+static struct proto *
+proto_init(struct proto_config *c, node *n)
+{
+ struct protocol *pr = c->protocol;
+ struct proto *p = pr->init(c);
+
+ p->proto_state = PS_DOWN;
+ p->last_state_change = now;
+ insert_node(&p->n, n);
+
+ p->event = ev_new(proto_pool);
+ p->event->hook = proto_event;
+ p->event->data = p;
+
+ PD(p, "Initializing%s", p->disabled ? " [disabled]" : "");
+
+ return p;
+}
+
+static void
+proto_start(struct proto *p)
+{
+ /* Here we cannot use p->cf->name since it won't survive reconfiguration */
+ p->pool = rp_new(proto_pool, p->proto->name);
+
+ if (graceful_restart_state == GRS_INIT)
+ p->gr_recovery = 1;
}
@@ -263,22 +693,24 @@ proto_free_ahooks(struct proto *p)
void *
proto_config_new(struct protocol *pr, int class)
{
- struct proto_config *c = cfg_allocz(pr->config_size);
+ struct proto_config *cf = cfg_allocz(pr->config_size);
if (class == SYM_PROTO)
- add_tail(&new_config->protos, &c->n);
- c->global = new_config;
- c->protocol = pr;
- c->name = pr->name;
- c->preference = pr->preference;
- c->class = class;
- c->out_filter = FILTER_REJECT;
- c->table = c->global->master_rtc;
- c->debug = new_config->proto_default_debug;
- c->mrtdump = new_config->proto_default_mrtdump;
- return c;
+ add_tail(&new_config->protos, &cf->n);
+
+ cf->global = new_config;
+ cf->protocol = pr;
+ cf->name = pr->name;
+ cf->class = class;
+ cf->debug = new_config->proto_default_debug;
+ cf->mrtdump = new_config->proto_default_mrtdump;
+
+ init_list(&cf->channels);
+
+ return cf;
}
+
/**
* proto_copy_config - copy a protocol configuration
* @dest: destination protocol configuration
@@ -293,6 +725,7 @@ proto_config_new(struct protocol *pr, int class)
void
proto_copy_config(struct proto_config *dest, struct proto_config *src)
{
+ struct channel_config *cc;
node old_node;
int old_class;
char *old_name;
@@ -305,7 +738,7 @@ proto_copy_config(struct proto_config *dest, struct proto_config *src)
DBG("Copying configuration from %s to %s\n", src->name, dest->name);
- /*
+ /*
* Copy struct proto_config here. Keep original node, class and name.
* protocol-specific config copy is handled by protocol copy_config() hook
*/
@@ -314,12 +747,17 @@ proto_copy_config(struct proto_config *dest, struct proto_config *src)
old_class = dest->class;
old_name = dest->name;
- memcpy(dest, src, sizeof(struct proto_config));
+ memcpy(dest, src, src->protocol->config_size);
dest->n = old_node;
dest->class = old_class;
dest->name = old_name;
+ init_list(&dest->channels);
+ WALK_LIST(cc, src->channels)
+ channel_copy_config(cc, dest);
+
+ /* FIXME: allow for undefined copy_config */
dest->protocol->copy_config(dest, src);
}
@@ -339,66 +777,15 @@ protos_preconfig(struct config *c)
init_list(&c->protos);
DBG("Protocol preconfig:");
WALK_LIST(p, protocol_list)
- {
- DBG(" %s", p->name);
- p->name_counter = 0;
- if (p->preconfig)
- p->preconfig(p, c);
- }
- DBG("\n");
-}
-
-/**
- * protos_postconfig - post-configuration processing
- * @c: new configuration
- *
- * This function calls the postconfig() hooks of all protocol
- * instances specified in configuration @c. The hooks are not
- * called for protocol templates.
- */
-void
-protos_postconfig(struct config *c)
-{
- struct proto_config *x;
- struct protocol *p;
-
- DBG("Protocol postconfig:");
- WALK_LIST(x, c->protos)
- {
- DBG(" %s", x->name);
-
- p = x->protocol;
- if (p->postconfig)
- p->postconfig(x);
- }
+ {
+ DBG(" %s", p->name);
+ p->name_counter = 0;
+ if (p->preconfig)
+ p->preconfig(p, c);
+ }
DBG("\n");
}
-extern struct protocol proto_unix_iface;
-
-static struct proto *
-proto_init(struct proto_config *c)
-{
- struct protocol *p = c->protocol;
- struct proto *q = p->init(c);
-
- q->proto_state = PS_DOWN;
- q->core_state = FS_HUNGRY;
- q->export_state = ES_DOWN;
- q->last_state_change = now;
-
- add_tail(&initial_proto_list, &q->n);
-
- if (p == &proto_unix_iface)
- initial_device_proto = q;
-
- add_tail(&proto_list, &q->glob_node);
- PD(q, "Initializing%s", q->disabled ? " [disabled]" : "");
- return q;
-}
-
-int proto_reconfig_type; /* Hack to propagate type info to pipe reconfigure hook */
-
static int
proto_reconfigure(struct proto *p, struct proto_config *oc, struct proto_config *nc, int type)
{
@@ -408,74 +795,23 @@ proto_reconfigure(struct proto *p, struct proto_config *oc, struct proto_config
/* If there is a too big change in core attributes, ... */
if ((nc->protocol != oc->protocol) ||
- (nc->disabled != p->disabled) ||
- (nc->table->table != oc->table->table))
+ (nc->net_type != oc->net_type) ||
+ (nc->disabled != p->disabled))
+
return 0;
+ p->name = nc->name;
p->debug = nc->debug;
p->mrtdump = nc->mrtdump;
- proto_reconfig_type = type;
+ reconfigure_type = type;
/* Execute protocol specific reconfigure hook */
- if (! (p->proto->reconfigure && p->proto->reconfigure(p, nc)))
+ if (!p->proto->reconfigure || !p->proto->reconfigure(p, nc))
return 0;
DBG("\t%s: same\n", oc->name);
PD(p, "Reconfigured");
p->cf = nc;
- p->name = nc->name;
- p->preference = nc->preference;
-
-
- /* Multitable protocols handle rest in their reconfigure hooks */
- if (p->proto->multitable)
- return 1;
-
- /* Update filters and limits in the main announce hook
- Note that this also resets limit state */
- if (p->main_ahook)
- {
- struct announce_hook *ah = p->main_ahook;
- ah->in_filter = nc->in_filter;
- ah->out_filter = nc->out_filter;
- ah->rx_limit = nc->rx_limit;
- ah->in_limit = nc->in_limit;
- ah->out_limit = nc->out_limit;
- ah->in_keep_filtered = nc->in_keep_filtered;
- proto_verify_limits(ah);
- }
-
- /* Update routes when filters changed. If the protocol in not UP,
- it has no routes and we can ignore such changes */
- if ((p->proto_state != PS_UP) || (type == RECONFIG_SOFT))
- return 1;
-
- int import_changed = ! filter_same(nc->in_filter, oc->in_filter);
- int export_changed = ! filter_same(nc->out_filter, oc->out_filter);
-
- /* We treat a change in preferences by reimporting routes */
- if (nc->preference != oc->preference)
- import_changed = 1;
-
- if (import_changed || export_changed)
- log(L_INFO "Reloading protocol %s", p->name);
-
- /* If import filter changed, call reload hook */
- if (import_changed && ! (p->reload_routes && p->reload_routes(p)))
- {
- /* Now, the protocol is reconfigured. But route reload failed
- and we have to do regular protocol restart. */
- log(L_INFO "Restarting protocol %s", p->name);
- p->disabled = 1;
- p->down_code = PDC_CF_RESTART;
- proto_rethink_goal(p);
- p->disabled = 0;
- proto_rethink_goal(p);
- return 1;
- }
-
- if (export_changed)
- proto_request_feeding(p);
return 1;
}
@@ -512,85 +848,94 @@ void
protos_commit(struct config *new, struct config *old, int force_reconfig, int type)
{
struct proto_config *oc, *nc;
- struct proto *p, *n;
struct symbol *sym;
+ struct proto *p;
+ node *n;
+
DBG("protos_commit:\n");
if (old)
+ {
+ WALK_LIST(oc, old->protos)
{
- WALK_LIST(oc, old->protos)
- {
- p = oc->proto;
- sym = cf_find_symbol(new, oc->name);
- if (sym && sym->class == SYM_PROTO && !new->shutdown)
- {
- /* Found match, let's check if we can smoothly switch to new configuration */
- /* No need to check description */
- nc = sym->def;
- nc->proto = p;
-
- /* We will try to reconfigure protocol p */
- if (! force_reconfig && proto_reconfigure(p, oc, nc, type))
- continue;
-
- /* Unsuccessful, we will restart it */
- if (!p->disabled && !nc->disabled)
- log(L_INFO "Restarting protocol %s", p->name);
- else if (p->disabled && !nc->disabled)
- log(L_INFO "Enabling protocol %s", p->name);
- else if (!p->disabled && nc->disabled)
- log(L_INFO "Disabling protocol %s", p->name);
-
- p->down_code = nc->disabled ? PDC_CF_DISABLE : PDC_CF_RESTART;
- p->cf_new = nc;
- }
- else if (!new->shutdown)
- {
- log(L_INFO "Removing protocol %s", p->name);
- p->down_code = PDC_CF_REMOVE;
- p->cf_new = NULL;
- }
- else /* global shutdown */
- {
- p->down_code = PDC_CMD_SHUTDOWN;
- p->cf_new = NULL;
- }
-
- p->reconfiguring = 1;
- config_add_obstacle(old);
- proto_rethink_goal(p);
- }
+ p = oc->proto;
+ sym = cf_find_symbol(new, oc->name);
+ if (sym && sym->class == SYM_PROTO && !new->shutdown)
+ {
+ /* Found match, let's check if we can smoothly switch to new configuration */
+ /* No need to check description */
+ nc = sym->def;
+ nc->proto = p;
+
+ /* We will try to reconfigure protocol p */
+ if (! force_reconfig && proto_reconfigure(p, oc, nc, type))
+ continue;
+
+ /* Unsuccessful, we will restart it */
+ if (!p->disabled && !nc->disabled)
+ log(L_INFO "Restarting protocol %s", p->name);
+ else if (p->disabled && !nc->disabled)
+ log(L_INFO "Enabling protocol %s", p->name);
+ else if (!p->disabled && nc->disabled)
+ log(L_INFO "Disabling protocol %s", p->name);
+
+ p->down_code = nc->disabled ? PDC_CF_DISABLE : PDC_CF_RESTART;
+ p->cf_new = nc;
+ }
+ else if (!new->shutdown)
+ {
+ log(L_INFO "Removing protocol %s", p->name);
+ p->down_code = PDC_CF_REMOVE;
+ p->cf_new = NULL;
+ }
+ else /* global shutdown */
+ {
+ p->down_code = PDC_CMD_SHUTDOWN;
+ p->cf_new = NULL;
+ }
+
+ p->reconfiguring = 1;
+ config_add_obstacle(old);
+ proto_rethink_goal(p);
}
+ }
+ struct proto *first_dev_proto = NULL;
+
+ n = NODE &(proto_list.head);
WALK_LIST(nc, new->protos)
if (!nc->proto)
- {
- if (old) /* Not a first-time configuration */
- log(L_INFO "Adding protocol %s", nc->name);
- proto_init(nc);
- }
- DBG("\tdone\n");
+ {
+ /* Not a first-time configuration */
+ if (old)
+ log(L_INFO "Adding protocol %s", nc->name);
+
+ p = proto_init(nc, n);
+ n = NODE p;
+
+ if (p->proto == &proto_unix_iface)
+ first_dev_proto = p;
+ }
+ else
+ n = NODE nc->proto;
DBG("Protocol start\n");
/* Start device protocol first */
- if (initial_device_proto)
- {
- proto_rethink_goal(initial_device_proto);
- initial_device_proto = NULL;
- }
+ if (first_dev_proto)
+ proto_rethink_goal(first_dev_proto);
/* Determine router ID for the first time - it has to be here and not in
global_commit() because it is postponed after start of device protocol */
if (!config->router_id)
- {
- config->router_id = if_choose_router_id(config->router_id_from, 0);
- if (!config->router_id)
- die("Cannot determine router ID, please configure it manually");
- }
+ {
+ config->router_id = if_choose_router_id(config->router_id_from, 0);
+ if (!config->router_id)
+ die("Cannot determine router ID, please configure it manually");
+ }
- /* Start all other protocols */
- WALK_LIST_DELSAFE(p, n, initial_proto_list)
+ /* Start all new protocols */
+ WALK_LIST_DELSAFE(p, n, proto_list)
proto_rethink_goal(p);
}
@@ -600,19 +945,21 @@ proto_rethink_goal(struct proto *p)
struct protocol *q;
byte goal;
- if (p->reconfiguring && p->core_state == FS_HUNGRY && p->proto_state == PS_DOWN)
- {
- struct proto_config *nc = p->cf_new;
- DBG("%s has shut down for reconfiguration\n", p->name);
- p->cf->proto = NULL;
- config_del_obstacle(p->cf->global);
- rem_node(&p->n);
- rem_node(&p->glob_node);
- mb_free(p);
- if (!nc)
- return;
- p = proto_init(nc);
- }
+ if (p->reconfiguring && !p->active)
+ {
+ struct proto_config *nc = p->cf_new;
+ node *n = p->n.prev;
+ DBG("%s has shut down for reconfiguration\n", p->name);
+ p->cf->proto = NULL;
+ config_del_obstacle(p->cf->global);
+ proto_remove_channels(p);
+ rem_node(&p->n);
+ rfree(p->event);
+ mb_free(p);
+ if (!nc)
+ return;
+ p = proto_init(nc, n);
+ }
/* Determine what state we want to reach */
if (p->disabled || p->reconfiguring)
@@ -621,25 +968,27 @@ proto_rethink_goal(struct proto *p)
goal = PS_UP;
q = p->proto;
- if (goal == PS_UP) /* Going up */
+ if (goal == PS_UP)
+ {
+ if (!p->active)
{
- if (p->proto_state == PS_DOWN && p->core_state == FS_HUNGRY)
- {
- DBG("Kicking %s up\n", p->name);
- PD(p, "Starting");
- proto_init_instance(p);
- proto_notify_state(p, (q->start ? q->start(p) : PS_UP));
- }
+ /* Going up */
+ DBG("Kicking %s up\n", p->name);
+ PD(p, "Starting");
+ proto_start(p);
+ proto_notify_state(p, (q->start ? q->start(p) : PS_UP));
}
- else /* Going down */
+ }
+ else
+ {
+ if (p->proto_state == PS_START || p->proto_state == PS_UP)
{
- if (p->proto_state == PS_START || p->proto_state == PS_UP)
- {
- DBG("Kicking %s down\n", p->name);
- PD(p, "Shutting down");
- proto_notify_state(p, (q->shutdown ? q->shutdown(p) : PS_DOWN));
- }
+ /* Going down */
+ DBG("Kicking %s down\n", p->name);
+ PD(p, "Shutting down");
+ proto_notify_state(p, (q->shutdown ? q->shutdown(p) : PS_DOWN));
}
+ }
}
@@ -661,13 +1010,14 @@ proto_rethink_goal(struct proto *p)
* When graceful restart recovery need is detected during initialization, then
* enabled protocols are marked with @gr_recovery flag before start. Such
* protocols then decide how to proceed with graceful restart, participation is
- * voluntary. Protocols could lock the recovery by proto_graceful_restart_lock()
- * (stored in @gr_lock flag), which means that they want to postpone the end of
- * the recovery until they converge and then unlock it. They also could set
- * @gr_wait before advancing to %PS_UP, which means that the core should defer
- * route export to that protocol until the end of the recovery. This should be
- * done by protocols that expect their neigbors to keep the proper routes
- * (kernel table, BGP sessions with BGP graceful restart capability).
+ * voluntary. Protocols could lock the recovery for each channel by function
+ * channel_graceful_restart_lock() (state stored in @gr_lock flag), which means
+ * that they want to postpone the end of the recovery until they converge and
+ * then unlock it. They also could set @gr_wait before advancing to %PS_UP,
+ * which means that the core should defer route export to that channel until
+ * the end of the recovery. This should be done by protocols that expect their
+ * neigbors to keep the proper routes (kernel table, BGP sessions with BGP
+ * graceful restart capability).
*
* The graceful restart recovery is finished when either all graceful restart
* locks are unlocked or when graceful restart wait timer fires.
@@ -705,10 +1055,10 @@ graceful_restart_init(void)
log(L_INFO "Graceful restart started");
if (!graceful_restart_locks)
- {
- graceful_restart_done(NULL);
- return;
- }
+ {
+ graceful_restart_done(NULL);
+ return;
+ }
graceful_restart_state = GRS_ACTIVE;
gr_wait_timer = tm_new(proto_pool);
@@ -729,30 +1079,30 @@ graceful_restart_init(void)
static void
graceful_restart_done(struct timer *t UNUSED)
{
- struct proto *p;
- node *n;
-
log(L_INFO "Graceful restart done");
graceful_restart_state = GRS_DONE;
- WALK_LIST2(p, n, proto_list, glob_node)
- {
- if (!p->gr_recovery)
- continue;
+ struct proto *p;
+ WALK_LIST(p, proto_list)
+ {
+ if (!p->gr_recovery)
+ continue;
+ struct channel *c;
+ WALK_LIST(c, p->channels)
+ {
/* Resume postponed export of routes */
- if ((p->proto_state == PS_UP) && p->gr_wait)
- {
- proto_want_export_up(p);
- proto_log_state_change(p);
- }
+ if ((c->channel_state == CS_UP) && c->gr_wait && c->proto->rt_notify)
+ channel_start_export(c);
/* Cleanup */
- p->gr_recovery = 0;
- p->gr_wait = 0;
- p->gr_lock = 0;
+ c->gr_wait = 0;
+ c->gr_lock = 0;
}
+ p->gr_recovery = 0;
+ }
+
graceful_restart_locks = 0;
}
@@ -763,17 +1113,17 @@ graceful_restart_show_status(void)
return;
cli_msg(-24, "Graceful restart recovery in progress");
- cli_msg(-24, " Waiting for %d protocols to recover", graceful_restart_locks);
+ cli_msg(-24, " Waiting for %d channels to recover", graceful_restart_locks);
cli_msg(-24, " Wait timer is %d/%d", tm_remains(gr_wait_timer), config->gr_wait);
}
/**
- * proto_graceful_restart_lock - lock graceful restart by protocol
- * @p: protocol instance
+ * channel_graceful_restart_lock - lock graceful restart by channel
+ * @p: channel instance
*
* This function allows a protocol to postpone the end of graceful restart
* recovery until it converges. The lock is removed when the protocol calls
- * proto_graceful_restart_unlock() or when the protocol is stopped.
+ * channel_graceful_restart_unlock() or when the channel is closed.
*
* The function have to be called during the initial phase of graceful restart
* recovery and only for protocols that are part of graceful restart (i.e. their
@@ -781,32 +1131,32 @@ graceful_restart_show_status(void)
* hooks.
*/
void
-proto_graceful_restart_lock(struct proto *p)
+channel_graceful_restart_lock(struct channel *c)
{
ASSERT(graceful_restart_state == GRS_INIT);
- ASSERT(p->gr_recovery);
+ ASSERT(c->proto->gr_recovery);
- if (p->gr_lock)
+ if (c->gr_lock)
return;
- p->gr_lock = 1;
+ c->gr_lock = 1;
graceful_restart_locks++;
}
/**
- * proto_graceful_restart_unlock - unlock graceful restart by protocol
- * @p: protocol instance
+ * channel_graceful_restart_unlock - unlock graceful restart by channel
+ * @p: channel instance
*
- * This function unlocks a lock from proto_graceful_restart_lock(). It is also
+ * This function unlocks a lock from channel_graceful_restart_lock(). It is also
* automatically called when the lock holding protocol went down.
*/
void
-proto_graceful_restart_unlock(struct proto *p)
+channel_graceful_restart_unlock(struct channel *c)
{
- if (!p->gr_lock)
+ if (!c->gr_lock)
return;
- p->gr_lock = 0;
+ c->gr_lock = 0;
graceful_restart_locks--;
if ((graceful_restart_state == GRS_ACTIVE) && !graceful_restart_locks)
@@ -827,34 +1177,26 @@ proto_graceful_restart_unlock(struct proto *p)
void
protos_dump_all(void)
{
- struct proto *p;
- struct announce_hook *a;
-
debug("Protocols:\n");
- WALK_LIST(p, active_proto_list)
+ struct proto *p;
+ WALK_LIST(p, proto_list)
+ {
+ debug(" protocol %s state %s\n", p->name, p_states[p->proto_state]);
+
+ struct channel *c;
+ WALK_LIST(c, p->channels)
{
- debug(" protocol %s state %s/%s\n", p->name,
- p_states[p->proto_state], c_states[p->core_state]);
- for (a = p->ahooks; a; a = a->next)
- {
- debug("\tTABLE %s\n", a->table->name);
- if (a->in_filter)
- debug("\tInput filter: %s\n", filter_name(a->in_filter));
- if (a->out_filter != FILTER_REJECT)
- debug("\tOutput filter: %s\n", filter_name(a->out_filter));
- }
- if (p->disabled)
- debug("\tDISABLED\n");
- else if (p->proto->dump)
- p->proto->dump(p);
+ debug("\tTABLE %s\n", c->table->name);
+ if (c->in_filter)
+ debug("\tInput filter: %s\n", filter_name(c->in_filter));
+ if (c->out_filter)
+ debug("\tOutput filter: %s\n", filter_name(c->out_filter));
}
- WALK_LIST(p, inactive_proto_list)
- debug(" inactive %s: state %s/%s\n", p->name, p_states[p->proto_state], c_states[p->core_state]);
- WALK_LIST(p, initial_proto_list)
- debug(" initial %s\n", p->name);
- WALK_LIST(p, flush_proto_list)
- debug(" flushing %s\n", p->name);
+
+ if (p->proto->dump && (p->proto_state != PS_DOWN))
+ p->proto->dump(p);
+ }
}
/**
@@ -891,12 +1233,9 @@ extern void bfd_init_all(void);
void
protos_build(void)
{
- init_list(&protocol_list);
init_list(&proto_list);
- init_list(&active_proto_list);
- init_list(&inactive_proto_list);
- init_list(&initial_proto_list);
- init_list(&flush_proto_list);
+ init_list(&protocol_list);
+
proto_build(&proto_device);
#ifdef CONFIG_RADV
proto_build(&proto_radv);
@@ -925,136 +1264,10 @@ protos_build(void)
#endif
proto_pool = rp_new(&root_pool, "Protocols");
- proto_flush_event = ev_new(proto_pool);
- proto_flush_event->hook = proto_flush_loop;
proto_shutdown_timer = tm_new(proto_pool);
proto_shutdown_timer->hook = proto_shutdown_loop;
}
-static void
-proto_feed_more(void *P)
-{
- struct proto *p = P;
-
- if (p->export_state != ES_FEEDING)
- return;
-
- DBG("Feeding protocol %s continued\n", p->name);
- if (rt_feed_baby(p))
- {
- DBG("Feeding protocol %s finished\n", p->name);
- p->export_state = ES_READY;
- proto_log_state_change(p);
-
- if (p->feed_end)
- p->feed_end(p);
- }
- else
- {
- p->attn->hook = proto_feed_more;
- ev_schedule(p->attn); /* Will continue later... */
- }
-}
-
-static void
-proto_feed_initial(void *P)
-{
- struct proto *p = P;
-
- if (p->export_state != ES_FEEDING)
- return;
-
- DBG("Feeding protocol %s\n", p->name);
-
- if_feed_baby(p);
- proto_feed_more(P);
-}
-
-static void
-proto_schedule_feed(struct proto *p, int initial)
-{
- DBG("%s: Scheduling meal\n", p->name);
-
- p->export_state = ES_FEEDING;
- p->refeeding = !initial;
-
- p->attn->hook = initial ? proto_feed_initial : proto_feed_more;
- ev_schedule(p->attn);
-
- if (p->feed_begin)
- p->feed_begin(p, initial);
-}
-
-/*
- * Flushing loop is responsible for flushing routes and protocols
- * after they went down. It runs in proto_flush_event. At the start of
- * one round, protocols waiting to flush are marked in
- * proto_schedule_flush_loop(). At the end of the round (when routing
- * table flush is complete), marked protocols are flushed and a next
- * round may start.
- */
-
-static int flush_loop_state; /* 1 -> running */
-
-static void
-proto_schedule_flush_loop(void)
-{
- struct proto *p;
- struct announce_hook *h;
-
- if (flush_loop_state)
- return;
- flush_loop_state = 1;
-
- WALK_LIST(p, flush_proto_list)
- {
- p->flushing = 1;
- for (h=p->ahooks; h; h=h->next)
- rt_mark_for_prune(h->table);
- }
-
- ev_schedule(proto_flush_event);
-}
-
-static void
-proto_flush_loop(void *unused UNUSED)
-{
- struct proto *p;
-
- if (! rt_prune_loop())
- {
- /* Rtable pruning is not finished */
- ev_schedule(proto_flush_event);
- return;
- }
-
- rt_prune_sources();
-
- again:
- WALK_LIST(p, flush_proto_list)
- if (p->flushing)
- {
- /* This will flush interfaces in the same manner
- like rt_prune_all() flushes routes */
- if (p->proto == &proto_unix_iface)
- if_flush_ifaces(p);
-
- DBG("Flushing protocol %s\n", p->name);
- p->flushing = 0;
- p->core_state = FS_HUNGRY;
- proto_relink(p);
- proto_log_state_change(p);
- if (p->proto_state == PS_DOWN)
- proto_fell_down(p);
- goto again;
- }
-
- /* This round finished, perhaps there will be another one */
- flush_loop_state = 0;
- if (!EMPTY_LIST(flush_proto_list))
- proto_schedule_flush_loop();
-}
-
/* Temporary hack to propagate restart to BGP */
int proto_restart;
@@ -1064,19 +1277,19 @@ proto_shutdown_loop(struct timer *t UNUSED)
{
struct proto *p, *p_next;
- WALK_LIST_DELSAFE(p, p_next, active_proto_list)
+ WALK_LIST_DELSAFE(p, p_next, proto_list)
if (p->down_sched)
- {
- proto_restart = (p->down_sched == PDS_RESTART);
+ {
+ proto_restart = (p->down_sched == PDS_RESTART);
- p->disabled = 1;
+ p->disabled = 1;
+ proto_rethink_goal(p);
+ if (proto_restart)
+ {
+ p->disabled = 0;
proto_rethink_goal(p);
- if (proto_restart)
- {
- p->disabled = 0;
- proto_rethink_goal(p);
- }
}
+ }
}
static inline void
@@ -1095,50 +1308,8 @@ proto_schedule_down(struct proto *p, byte restart, byte code)
}
-/**
- * proto_request_feeding - request feeding routes to the protocol
- * @p: given protocol
- *
- * Sometimes it is needed to send again all routes to the
- * protocol. This is called feeding and can be requested by this
- * function. This would cause protocol export state transition
- * to ES_FEEDING (during feeding) and when completed, it will
- * switch back to ES_READY. This function can be called even
- * when feeding is already running, in that case it is restarted.
- */
-void
-proto_request_feeding(struct proto *p)
-{
- ASSERT(p->proto_state == PS_UP);
-
- /* Do nothing if we are still waiting for feeding */
- if (p->export_state == ES_DOWN)
- return;
-
- /* If we are already feeding, we want to restart it */
- if (p->export_state == ES_FEEDING)
- {
- /* Unless feeding is in initial state */
- if (p->attn->hook == proto_feed_initial)
- return;
-
- rt_feed_baby_abort(p);
- }
-
- /* FIXME: This should be changed for better support of multitable protos */
- struct announce_hook *ah;
- for (ah = p->ahooks; ah; ah = ah->next)
- proto_reset_limit(ah->out_limit);
-
- /* Hack: reset exp_routes during refeed, and do not decrease it later */
- p->stats.exp_routes = 0;
-
- proto_schedule_feed(p, 0);
- proto_log_state_change(p);
-}
-
static const char *
-proto_limit_name(struct proto_limit *l)
+channel_limit_name(struct channel_limit *l)
{
const char *actions[] = {
[PLA_WARN] = "warn",
@@ -1151,22 +1322,22 @@ proto_limit_name(struct proto_limit *l)
}
/**
- * proto_notify_limit: notify about limit hit and take appropriate action
- * @ah: announce hook
+ * channel_notify_limit: notify about limit hit and take appropriate action
+ * @c: channel
* @l: limit being hit
* @dir: limit direction (PLD_*)
- * @rt_count: the number of routes
+ * @rt_count: the number of routes
*
* The function is called by the route processing core when limit @l
* is breached. It activates the limit and tooks appropriate action
* according to @l->action.
*/
void
-proto_notify_limit(struct announce_hook *ah, struct proto_limit *l, int dir, u32 rt_count)
+channel_notify_limit(struct channel *c, struct channel_limit *l, int dir, u32 rt_count)
{
const char *dir_name[PLD_MAX] = { "receive", "import" , "export" };
const byte dir_down[PLD_MAX] = { PDC_RX_LIMIT_HIT, PDC_IN_LIMIT_HIT, PDC_OUT_LIMIT_HIT };
- struct proto *p = ah->proto;
+ struct proto *p = c->proto;
if (l->state == PLS_BLOCKED)
return;
@@ -1174,148 +1345,112 @@ proto_notify_limit(struct announce_hook *ah, struct proto_limit *l, int dir, u32
/* For warning action, we want the log message every time we hit the limit */
if (!l->state || ((l->action == PLA_WARN) && (rt_count == l->limit)))
log(L_WARN "Protocol %s hits route %s limit (%d), action: %s",
- p->name, dir_name[dir], l->limit, proto_limit_name(l));
+ p->name, dir_name[dir], l->limit, channel_limit_name(l));
switch (l->action)
- {
- case PLA_WARN:
- l->state = PLS_ACTIVE;
- break;
-
- case PLA_BLOCK:
- l->state = PLS_BLOCKED;
- break;
-
- case PLA_RESTART:
- case PLA_DISABLE:
- l->state = PLS_BLOCKED;
- if (p->proto_state == PS_UP)
- proto_schedule_down(p, l->action == PLA_RESTART, dir_down[dir]);
- break;
- }
+ {
+ case PLA_WARN:
+ l->state = PLS_ACTIVE;
+ break;
+
+ case PLA_BLOCK:
+ l->state = PLS_BLOCKED;
+ break;
+
+ case PLA_RESTART:
+ case PLA_DISABLE:
+ l->state = PLS_BLOCKED;
+ if (p->proto_state == PS_UP)
+ proto_schedule_down(p, l->action == PLA_RESTART, dir_down[dir]);
+ break;
+ }
}
-void
-proto_verify_limits(struct announce_hook *ah)
+static void
+channel_verify_limits(struct channel *c)
{
- struct proto_limit *l;
- struct proto_stats *stats = ah->stats;
- u32 all_routes = stats->imp_routes + stats->filt_routes;
+ struct channel_limit *l;
+ u32 all_routes = c->stats.imp_routes + c->stats.filt_routes;
- l = ah->rx_limit;
- if (l && (all_routes > l->limit))
- proto_notify_limit(ah, l, PLD_RX, all_routes);
+ l = &c->rx_limit;
+ if (l->action && (all_routes > l->limit))
+ channel_notify_limit(c, l, PLD_RX, all_routes);
- l = ah->in_limit;
- if (l && (stats->imp_routes > l->limit))
- proto_notify_limit(ah, l, PLD_IN, stats->imp_routes);
+ l = &c->in_limit;
+ if (l->action && (c->stats.imp_routes > l->limit))
+ channel_notify_limit(c, l, PLD_IN, c->stats.imp_routes);
- l = ah->out_limit;
- if (l && (stats->exp_routes > l->limit))
- proto_notify_limit(ah, l, PLD_OUT, stats->exp_routes);
+ l = &c->out_limit;
+ if (l->action && (c->stats.exp_routes > l->limit))
+ channel_notify_limit(c, l, PLD_OUT, c->stats.exp_routes);
}
-
-static void
-proto_want_core_up(struct proto *p)
+static inline void
+channel_reset_limit(struct channel_limit *l)
{
- ASSERT(p->core_state == FS_HUNGRY);
-
- if (!p->proto->multitable)
- {
- p->main_source = rt_get_source(p, 0);
- rt_lock_source(p->main_source);
-
- /* Connect protocol to routing table */
- p->main_ahook = proto_add_announce_hook(p, p->table, &p->stats);
- p->main_ahook->in_filter = p->cf->in_filter;
- p->main_ahook->out_filter = p->cf->out_filter;
- p->main_ahook->rx_limit = p->cf->rx_limit;
- p->main_ahook->in_limit = p->cf->in_limit;
- p->main_ahook->out_limit = p->cf->out_limit;
- p->main_ahook->in_keep_filtered = p->cf->in_keep_filtered;
-
- proto_reset_limit(p->main_ahook->rx_limit);
- proto_reset_limit(p->main_ahook->in_limit);
- proto_reset_limit(p->main_ahook->out_limit);
- }
-
- p->core_state = FS_HAPPY;
- proto_relink(p);
+ if (l->action)
+ l->state = PLS_INITIAL;
}
-static void
-proto_want_export_up(struct proto *p)
+static inline void
+proto_do_start(struct proto *p)
{
- ASSERT(p->core_state == FS_HAPPY);
- ASSERT(p->export_state == ES_DOWN);
-
- proto_link_ahooks(p);
- proto_schedule_feed(p, 1); /* Sets ES_FEEDING */
+ p->active = 1;
+ p->do_start = 1;
+ ev_schedule(p->event);
}
static void
-proto_want_export_down(struct proto *p)
+proto_do_up(struct proto *p)
{
- ASSERT(p->export_state != ES_DOWN);
-
- /* Need to abort feeding */
- if (p->export_state == ES_FEEDING)
- rt_feed_baby_abort(p);
+ if (!p->main_source)
+ {
+ p->main_source = rt_get_source(p, 0);
+ rt_lock_source(p->main_source);
+ }
- p->export_state = ES_DOWN;
- p->stats.exp_routes = 0;
- proto_unlink_ahooks(p);
+ proto_start_channels(p);
}
-static void
-proto_want_core_down(struct proto *p)
+static inline void
+proto_do_pause(struct proto *p)
{
- ASSERT(p->core_state == FS_HAPPY);
- ASSERT(p->export_state == ES_DOWN);
-
- p->core_state = FS_FLUSHING;
- proto_relink(p);
- proto_schedule_flush_loop();
-
- if (!p->proto->multitable)
- {
- rt_unlock_source(p->main_source);
- p->main_source = NULL;
- }
+ proto_pause_channels(p);
}
static void
-proto_falling_down(struct proto *p)
+proto_do_stop(struct proto *p)
{
+ p->down_sched = 0;
p->gr_recovery = 0;
- p->gr_wait = 0;
- if (p->gr_lock)
- proto_graceful_restart_unlock(p);
-}
-static void
-proto_fell_down(struct proto *p)
-{
- DBG("Protocol %s down\n", p->name);
-
- u32 all_routes = p->stats.imp_routes + p->stats.filt_routes;
- if (all_routes != 0)
- log(L_ERR "Protocol %s is down but still has %d routes", p->name, all_routes);
+ p->do_stop = 1;
+ ev_schedule(p->event);
- bzero(&p->stats, sizeof(struct proto_stats));
- proto_free_ahooks(p);
-
- if (! p->proto->multitable)
- rt_unlock_table(p->table);
+ if (p->main_source)
+ {
+ rt_unlock_source(p->main_source);
+ p->main_source = NULL;
+ }
- if (p->proto->cleanup)
- p->proto->cleanup(p);
+ proto_stop_channels(p);
+}
- proto_rethink_goal(p);
+static void
+proto_do_down(struct proto *p)
+{
+ p->down_code = 0;
+ neigh_prune();
+ rfree(p->pool);
+ p->pool = NULL;
+
+ /* Shutdown is finished in the protocol event */
+ if (proto_is_done(p))
+ ev_schedule(p->event);
}
+
/**
* proto_notify_state - notify core about protocol state change
* @p: protocol the state of which has changed
@@ -1331,78 +1466,53 @@ proto_fell_down(struct proto *p)
* it should be used at tail positions of protocol callbacks.
*/
void
-proto_notify_state(struct proto *p, unsigned ps)
+proto_notify_state(struct proto *p, uint state)
{
- unsigned ops = p->proto_state;
- unsigned cs = p->core_state;
- unsigned es = p->export_state;
+ uint ps = p->proto_state;
- DBG("%s reporting state transition %s/%s -> */%s\n", p->name, c_states[cs], p_states[ops], p_states[ps]);
- if (ops == ps)
+ DBG("%s reporting state transition %s -> %s\n", p->name, p_states[ps], p_states[state]);
+ if (state == ps)
return;
- p->proto_state = ps;
+ p->proto_state = state;
p->last_state_change = now;
- switch (ps)
- {
- case PS_START:
- ASSERT(ops == PS_DOWN || ops == PS_UP);
- ASSERT(cs == FS_HUNGRY || cs == FS_HAPPY);
-
- if (es != ES_DOWN)
- proto_want_export_down(p);
- break;
-
- case PS_UP:
- ASSERT(ops == PS_DOWN || ops == PS_START);
- ASSERT(cs == FS_HUNGRY || cs == FS_HAPPY);
- ASSERT(es == ES_DOWN);
-
- if (cs == FS_HUNGRY)
- proto_want_core_up(p);
- if (!p->gr_wait)
- proto_want_export_up(p);
- break;
-
- case PS_STOP:
- ASSERT(ops == PS_START || ops == PS_UP);
-
- p->down_sched = 0;
-
- if (es != ES_DOWN)
- proto_want_export_down(p);
- if (cs == FS_HAPPY)
- proto_want_core_down(p);
- proto_falling_down(p);
- break;
-
- case PS_DOWN:
- p->down_code = 0;
- p->down_sched = 0;
-
- if (es != ES_DOWN)
- proto_want_export_down(p);
- if (cs == FS_HAPPY)
- proto_want_core_down(p);
- if (ops != PS_STOP)
- proto_falling_down(p);
-
- neigh_prune(); // FIXME convert neighbors to resource?
- rfree(p->pool);
- p->pool = NULL;
-
- if (cs == FS_HUNGRY) /* Shutdown finished */
- {
- proto_log_state_change(p);
- proto_fell_down(p);
- return; /* The protocol might have ceased to exist */
- }
- break;
-
- default:
- bug("%s: Invalid state %d", p->name, ps);
- }
+ switch (state)
+ {
+ case PS_START:
+ ASSERT(ps == PS_DOWN || ps == PS_UP);
+
+ if (ps == PS_DOWN)
+ proto_do_start(p);
+ else
+ proto_do_pause(p);
+ break;
+
+ case PS_UP:
+ ASSERT(ps == PS_DOWN || ps == PS_START);
+
+ if (ps == PS_DOWN)
+ proto_do_start(p);
+
+ proto_do_up(p);
+ break;
+
+ case PS_STOP:
+ ASSERT(ps == PS_START || ps == PS_UP);
+
+ proto_do_stop(p);
+ break;
+
+ case PS_DOWN:
+ if (ps != PS_STOP)
+ proto_do_stop(p);
+
+ proto_do_down(p);
+ break;
+
+ default:
+ bug("%s: Invalid state %d", p->name, ps);
+ }
proto_log_state_change(p);
}
@@ -1414,82 +1524,73 @@ proto_notify_state(struct proto *p, unsigned ps)
static char *
proto_state_name(struct proto *p)
{
-#define P(x,y) ((x << 4) | y)
- switch (P(p->proto_state, p->core_state))
- {
- case P(PS_DOWN, FS_HUNGRY): return "down";
- case P(PS_START, FS_HUNGRY):
- case P(PS_START, FS_HAPPY): return "start";
- case P(PS_UP, FS_HAPPY):
- switch (p->export_state)
- {
- case ES_DOWN: return "wait";
- case ES_FEEDING: return "feed";
- case ES_READY: return "up";
- default: return "???";
- }
- case P(PS_STOP, FS_HUNGRY):
- case P(PS_STOP, FS_FLUSHING): return "stop";
- case P(PS_DOWN, FS_FLUSHING): return "flush";
- default: return "???";
- }
-#undef P
+ switch (p->proto_state)
+ {
+ case PS_DOWN: return p->active ? "flush" : "down";
+ case PS_START: return "start";
+ case PS_UP: return "up";
+ case PS_STOP: return "stop";
+ default: return "???";
+ }
}
static void
-proto_show_stats(struct proto_stats *s, int in_keep_filtered)
+channel_show_stats(struct channel *c)
{
- if (in_keep_filtered)
- cli_msg(-1006, " Routes: %u imported, %u filtered, %u exported, %u preferred",
- s->imp_routes, s->filt_routes, s->exp_routes, s->pref_routes);
+ struct proto_stats *s = &c->stats;
+
+ if (c->in_keep_filtered)
+ cli_msg(-1006, " Routes: %u imported, %u filtered, %u exported",
+ s->imp_routes, s->filt_routes, s->exp_routes);
else
- cli_msg(-1006, " Routes: %u imported, %u exported, %u preferred",
- s->imp_routes, s->exp_routes, s->pref_routes);
+ cli_msg(-1006, " Routes: %u imported, %u exported",
+ s->imp_routes, s->exp_routes);
- cli_msg(-1006, " Route change stats: received rejected filtered ignored accepted");
- cli_msg(-1006, " Import updates: %10u %10u %10u %10u %10u",
+ cli_msg(-1006, " Route change stats: received rejected filtered ignored accepted");
+ cli_msg(-1006, " Import updates: %10u %10u %10u %10u %10u",
s->imp_updates_received, s->imp_updates_invalid,
s->imp_updates_filtered, s->imp_updates_ignored,
s->imp_updates_accepted);
- cli_msg(-1006, " Import withdraws: %10u %10u --- %10u %10u",
+ cli_msg(-1006, " Import withdraws: %10u %10u --- %10u %10u",
s->imp_withdraws_received, s->imp_withdraws_invalid,
s->imp_withdraws_ignored, s->imp_withdraws_accepted);
- cli_msg(-1006, " Export updates: %10u %10u %10u --- %10u",
+ cli_msg(-1006, " Export updates: %10u %10u %10u --- %10u",
s->exp_updates_received, s->exp_updates_rejected,
s->exp_updates_filtered, s->exp_updates_accepted);
- cli_msg(-1006, " Export withdraws: %10u --- --- --- %10u",
+ cli_msg(-1006, " Export withdraws: %10u --- --- --- %10u",
s->exp_withdraws_received, s->exp_withdraws_accepted);
}
void
-proto_show_limit(struct proto_limit *l, const char *dsc)
+channel_show_limit(struct channel_limit *l, const char *dsc)
{
- if (!l)
+ if (!l->action)
return;
- cli_msg(-1006, " %-16s%d%s", dsc, l->limit, l->state ? " [HIT]" : "");
- cli_msg(-1006, " Action: %s", proto_limit_name(l));
+ cli_msg(-1006, " %-16s%d%s", dsc, l->limit, l->state ? " [HIT]" : "");
+ cli_msg(-1006, " Action: %s", channel_limit_name(l));
}
void
-proto_show_basic_info(struct proto *p)
+channel_show_info(struct channel *c)
{
- // cli_msg(-1006, " Table: %s", p->table->name);
- cli_msg(-1006, " Preference: %d", p->preference);
- cli_msg(-1006, " Input filter: %s", filter_name(p->cf->in_filter));
- cli_msg(-1006, " Output filter: %s", filter_name(p->cf->out_filter));
+ cli_msg(-1006, " Channel %s", c->name);
+ cli_msg(-1006, " Table: %s", c->table->name);
+ cli_msg(-1006, " Preference: %d", c->preference);
+ cli_msg(-1006, " Input filter: %s", filter_name(c->in_filter));
+ cli_msg(-1006, " Output filter: %s", filter_name(c->out_filter));
if (graceful_restart_state == GRS_ACTIVE)
- cli_msg(-1006, " GR recovery: %s%s",
- p->gr_lock ? " pending" : "",
- p->gr_wait ? " waiting" : "");
+ cli_msg(-1006, " GR recovery: %s%s",
+ c->gr_lock ? " pending" : "",
+ c->gr_wait ? " waiting" : "");
- proto_show_limit(p->cf->rx_limit, "Receive limit:");
- proto_show_limit(p->cf->in_limit, "Import limit:");
- proto_show_limit(p->cf->out_limit, "Export limit:");
+ channel_show_limit(&c->rx_limit, "Receive limit:");
+ channel_show_limit(&c->in_limit, "Import limit:");
+ channel_show_limit(&c->out_limit, "Export limit:");
- if (p->proto_state != PS_DOWN)
- proto_show_stats(&p->stats, p->cf->in_keep_filtered);
+ if (c->channel_state != CS_DOWN)
+ channel_show_stats(c);
}
void
@@ -1508,34 +1609,39 @@ proto_cmd_show(struct proto *p, uint verbose, int cnt)
cli_msg(-1002, "%-8s %-8s %-8s %-5s %-10s %s",
p->name,
p->proto->name,
- p->table->name,
+ p->main_channel ? p->main_channel->table->name : "---",
proto_state_name(p),
tbuf,
buf);
+
if (verbose)
+ {
+ if (p->cf->dsc)
+ cli_msg(-1006, " Description: %s", p->cf->dsc);
+ if (p->cf->router_id)
+ cli_msg(-1006, " Router ID: %R", p->cf->router_id);
+
+ if (p->proto->show_proto_info)
+ p->proto->show_proto_info(p);
+ else
{
- if (p->cf->dsc)
- cli_msg(-1006, " Description: %s", p->cf->dsc);
- if (p->cf->router_id)
- cli_msg(-1006, " Router ID: %R", p->cf->router_id);
-
- if (p->proto->show_proto_info)
- p->proto->show_proto_info(p);
- else
- proto_show_basic_info(p);
-
- cli_msg(-1006, "");
+ struct channel *c;
+ WALK_LIST(c, p->channels)
+ channel_show_info(c);
}
+
+ cli_msg(-1006, "");
+ }
}
void
proto_cmd_disable(struct proto *p, uint arg UNUSED, int cnt UNUSED)
{
if (p->disabled)
- {
- cli_msg(-8, "%s: already disabled", p->name);
- return;
- }
+ {
+ cli_msg(-8, "%s: already disabled", p->name);
+ return;
+ }
log(L_INFO "Disabling protocol %s", p->name);
p->disabled = 1;
@@ -1548,10 +1654,10 @@ void
proto_cmd_enable(struct proto *p, uint arg UNUSED, int cnt UNUSED)
{
if (!p->disabled)
- {
- cli_msg(-10, "%s: already enabled", p->name);
- return;
- }
+ {
+ cli_msg(-10, "%s: already enabled", p->name);
+ return;
+ }
log(L_INFO "Enabling protocol %s", p->name);
p->disabled = 0;
@@ -1563,10 +1669,10 @@ void
proto_cmd_restart(struct proto *p, uint arg UNUSED, int cnt UNUSED)
{
if (p->disabled)
- {
- cli_msg(-8, "%s: already disabled", p->name);
- return;
- }
+ {
+ cli_msg(-8, "%s: already disabled", p->name);
+ return;
+ }
log(L_INFO "Restarting protocol %s", p->name);
p->disabled = 1;
@@ -1580,41 +1686,38 @@ proto_cmd_restart(struct proto *p, uint arg UNUSED, int cnt UNUSED)
void
proto_cmd_reload(struct proto *p, uint dir, int cnt UNUSED)
{
+ struct channel *c;
+
if (p->disabled)
- {
- cli_msg(-8, "%s: already disabled", p->name);
- return;
- }
+ {
+ cli_msg(-8, "%s: already disabled", p->name);
+ return;
+ }
/* If the protocol in not UP, it has no routes */
if (p->proto_state != PS_UP)
return;
+ /* All channels must support reload */
+ if (dir != CMD_RELOAD_OUT)
+ WALK_LIST(c, p->channels)
+ if (!channel_reloadable(c))
+ {
+ cli_msg(-8006, "%s: reload failed", p->name);
+ return;
+ }
+
log(L_INFO "Reloading protocol %s", p->name);
/* re-importing routes */
if (dir != CMD_RELOAD_OUT)
- {
- if (! (p->reload_routes && p->reload_routes(p)))
- {
- cli_msg(-8006, "%s: reload failed", p->name);
- return;
- }
-
- /*
- * Should be done before reload_routes() hook?
- * Perhaps, but these hooks work asynchronously.
- */
- if (!p->proto->multitable)
- {
- proto_reset_limit(p->main_ahook->rx_limit);
- proto_reset_limit(p->main_ahook->in_limit);
- }
- }
+ WALK_LIST(c, p->channels)
+ channel_request_reload(c);
/* re-exporting routes */
if (dir != CMD_RELOAD_IN)
- proto_request_feeding(p);
+ WALK_LIST(c, p->channels)
+ channel_request_feeding(c);
cli_msg(-15, "%s: reloading", p->name);
}
@@ -1635,10 +1738,10 @@ static void
proto_apply_cmd_symbol(struct symbol *s, void (* cmd)(struct proto *, uint, int), uint arg)
{
if (s->class != SYM_PROTO)
- {
- cli_msg(9002, "%s is not a protocol", s->name);
- return;
- }
+ {
+ cli_msg(9002, "%s is not a protocol", s->name);
+ return;
+ }
cmd(((struct proto_config *)s->def)->proto, arg, 0);
cli_msg(0, "");
@@ -1647,16 +1750,12 @@ proto_apply_cmd_symbol(struct symbol *s, void (* cmd)(struct proto *, uint, int)
static void
proto_apply_cmd_patt(char *patt, void (* cmd)(struct proto *, uint, int), uint arg)
{
+ struct proto *p;
int cnt = 0;
- node *nn;
- WALK_LIST(nn, proto_list)
- {
- struct proto *p = SKIP_BACK(struct proto, glob_node, nn);
-
- if (!patt || patmatch(patt, p->name))
- cmd(p, arg, cnt++);
- }
+ WALK_LIST(p, proto_list)
+ if (!patt || patmatch(patt, p->name))
+ cmd(p, arg, cnt++);
if (!cnt)
cli_msg(8003, "No protocols match");
@@ -1683,25 +1782,27 @@ proto_get_named(struct symbol *sym, struct protocol *pr)
struct proto *p, *q;
if (sym)
- {
- if (sym->class != SYM_PROTO)
- cf_error("%s: Not a protocol", sym->name);
- p = ((struct proto_config *)sym->def)->proto;
- if (!p || p->proto != pr)
- cf_error("%s: Not a %s protocol", sym->name, pr->name);
- }
+ {
+ if (sym->class != SYM_PROTO)
+ cf_error("%s: Not a protocol", sym->name);
+
+ p = ((struct proto_config *) sym->def)->proto;
+ if (!p || p->proto != pr)
+ cf_error("%s: Not a %s protocol", sym->name, pr->name);
+ }
else
- {
- p = NULL;
- WALK_LIST(q, active_proto_list)
- if (q->proto == pr)
- {
- if (p)
- cf_error("There are multiple %s protocols running", pr->name);
- p = q;
- }
- if (!p)
- cf_error("There is no %s protocol running", pr->name);
- }
+ {
+ p = NULL;
+ WALK_LIST(q, proto_list)
+ if ((q->proto == pr) && (q->proto_state != PS_DOWN))
+ {
+ if (p)
+ cf_error("There are multiple %s protocols running", pr->name);
+ p = q;
+ }
+ if (!p)
+ cf_error("There is no %s protocol running", pr->name);
+ }
+
return p;
}
diff --git a/nest/proto.sgml b/nest/proto.sgml
index 1d4c31a7..53da78b8 100644
--- a/nest/proto.sgml
+++ b/nest/proto.sgml
@@ -69,23 +69,6 @@ its state by calling the <func/proto_notify_state/ function.
<p>At any time, the core code can ask the protocol to shut itself down by calling its stop() hook.
-<p>The <em/core state machine/ takes care of the core view of protocol state.
-The states are traversed according to changes of the protocol state machine, but
-sometimes the transitions are delayed if the core needs to finish some actions
-(for example sending of new routes to the protocol) before proceeding to the
-new state. There are the following core states:
-
-<descrip>
- <tag/FS_HUNGRY/ The protocol is down, it doesn't have any routes and
- doesn't want them.
- <tag/FS_FEEDING/ The protocol has reached the <tt/PS_UP/ state, but
- we are still busy sending the initial set of routes to it.
- <tag/FS_HAPPY/ The protocol is up and has complete routing information.
- <tag/FS_FLUSHING/ The protocol is shutting down (it's in either <tt/PS_STOP/
- or <tt/PS_DOWN/ state) and we're flushing all of its routes from the
- routing tables.
-</descrip>
-
<sect1>Functions of the protocol module
<p>The protocol module provides the following functions:
diff --git a/nest/protocol.h b/nest/protocol.h
index ec787355..4b7bfdf3 100644
--- a/nest/protocol.h
+++ b/nest/protocol.h
@@ -11,7 +11,9 @@
#include "lib/lists.h"
#include "lib/resource.h"
-#include "lib/timer.h"
+#include "lib/event.h"
+#include "sysdep/unix/timer.h"
+#include "nest/route.h"
#include "conf/conf.h"
struct iface;
@@ -22,13 +24,16 @@ struct neighbor;
struct rta;
struct network;
struct proto_config;
+struct channel_limit;
+struct channel_config;
struct config;
struct proto;
-struct event;
+struct channel;
struct ea_list;
struct eattr;
struct symbol;
+
/*
* Routing Protocol
*/
@@ -39,9 +44,10 @@ struct protocol {
char *template; /* Template for automatic generation of names */
int name_counter; /* Counter for automatic name generation */
int attr_class; /* Attribute class known to this protocol */
- int multitable; /* Protocol handles all announce hooks itself */
uint preference; /* Default protocol preference */
- uint config_size; /* Size of protocol config */
+ uint channel_mask; /* Mask of accepted channel types (NB_*) */
+ uint proto_size; /* Size of protocol data structure */
+ uint config_size; /* Size of protocol config data structure */
void (*preconfig)(struct protocol *, struct config *); /* Just before configuring */
void (*postconfig)(struct proto_config *); /* After configuring each instance */
@@ -62,7 +68,6 @@ struct protocol {
void protos_build(void);
void proto_build(struct protocol *);
void protos_preconfig(struct config *);
-void protos_postconfig(struct config *);
void protos_commit(struct config *new, struct config *old, int force_restart, int type);
void protos_dump_all(void);
@@ -90,16 +95,12 @@ struct proto_config {
char *name;
char *dsc;
int class; /* SYM_PROTO or SYM_TEMPLATE */
+ u8 net_type; /* Protocol network type (NET_*), 0 for undefined */
+ u8 disabled; /* Protocol enabled/disabled by default */
u32 debug, mrtdump; /* Debugging bitfields, both use D_* constants */
- unsigned preference, disabled; /* Generic parameters */
- int in_keep_filtered; /* Routes rejected in import filter are kept */
u32 router_id; /* Protocol specific router ID */
- struct rtable_config *table; /* Table we're attached to */
- struct filter *in_filter, *out_filter; /* Attached filters */
- struct proto_limit *rx_limit; /* Limit for receiving routes from protocol
- (relevant when in_keep_filtered is active) */
- struct proto_limit *in_limit; /* Limit for importing routes from protocol */
- struct proto_limit *out_limit; /* Limit for exporting routes to protocol */
+
+ list channels; /* List of channel configs (struct channel_config) */
/* Check proto_reconfigure() and proto_copy_config() after changing struct proto_config */
@@ -111,7 +112,6 @@ struct proto_stats {
/* Import - from protocol to core */
u32 imp_routes; /* Number of routes successfully imported to the (adjacent) routing table */
u32 filt_routes; /* Number of routes rejected in import filter but kept in the routing table */
- u32 pref_routes; /* Number of routes that are preferred, sum over all routing tables */
u32 imp_updates_received; /* Number of route updates received */
u32 imp_updates_invalid; /* Number of route updates rejected as invalid */
u32 imp_updates_filtered; /* Number of route updates rejected by filters */
@@ -133,36 +133,34 @@ struct proto_stats {
};
struct proto {
- node n; /* Node in *_proto_list */
- node glob_node; /* Node in global proto_list */
+ node n; /* Node in global proto_list */
struct protocol *proto; /* Protocol */
struct proto_config *cf; /* Configuration data */
struct proto_config *cf_new; /* Configuration we want to switch to after shutdown (NULL=delete) */
pool *pool; /* Pool containing local objects */
- struct event *attn; /* "Pay attention" event */
+ event *event; /* Protocol event */
+
+ list channels; /* List of channels to rtables (struct channel) */
+ struct channel *main_channel; /* Primary channel */
+ struct rte_src *main_source; /* Primary route source */
char *name; /* Name of this instance (== cf->name) */
u32 debug; /* Debugging flags */
u32 mrtdump; /* MRTDump flags */
- unsigned preference; /* Default route preference */
- byte accept_ra_types; /* Which types of route announcements are accepted (RA_OPTIMAL or RA_ANY) */
+ uint active_channels; /* Number of active channels */
+ byte net_type; /* Protocol network type (NET_*), 0 for undefined */
byte disabled; /* Manually disabled */
byte proto_state; /* Protocol state machine (PS_*, see below) */
- byte core_state; /* Core state machine (FS_*, see below) */
- byte export_state; /* Route export state (ES_*, see below) */
+ byte active; /* From PS_START to cleanup after PS_STOP */
+ byte do_start; /* Start actions are scheduled */
+ byte do_stop; /* Stop actions are scheduled */
byte reconfiguring; /* We're shutting down due to reconfiguration */
- byte refeeding; /* We are refeeding (valid only if export_state == ES_FEEDING) */
- byte flushing; /* Protocol is flushed in current flush loop round */
byte gr_recovery; /* Protocol should participate in graceful restart recovery */
- byte gr_lock; /* Graceful restart mechanism should wait for this proto */
- byte gr_wait; /* Route export to protocol is postponed until graceful restart */
byte down_sched; /* Shutdown is scheduled for later (PDS_*) */
byte down_code; /* Reason for shutdown (PDC_* codes) */
- byte merge_limit; /* Maximal number of nexthops for RA_MERGED */
u32 hash_key; /* Random key used for hashing of neighbors */
bird_clock_t last_state_change; /* Time of last state transition */
char *last_state_name_announced; /* Last state name we've announced to the user */
- struct proto_stats stats; /* Current protocol statistics */
/*
* General protocol hooks:
@@ -177,23 +175,23 @@ struct proto {
* It can construct a new rte, add private attributes and
* decide whether the route shall be imported: 1=yes, -1=no,
* 0=process it through the import filter set by the user.
- * reload_routes Request protocol to reload all its routes to the core
+ * reload_routes Request channel to reload all its routes to the core
* (using rte_update()). Returns: 0=reload cannot be done,
* 1= reload is scheduled and will happen (asynchronously).
- * feed_begin Notify protocol about beginning of route feeding.
- * feed_end Notify protocol about finish of route feeding.
+ * feed_begin Notify channel about beginning of route feeding.
+ * feed_end Notify channel about finish of route feeding.
*/
void (*if_notify)(struct proto *, unsigned flags, struct iface *i);
void (*ifa_notify)(struct proto *, unsigned flags, struct ifa *a);
- void (*rt_notify)(struct proto *, struct rtable *table, struct network *net, struct rte *new, struct rte *old, struct ea_list *attrs);
+ void (*rt_notify)(struct proto *, struct channel *, struct network *net, struct rte *new, struct rte *old, struct ea_list *attrs);
void (*neigh_notify)(struct neighbor *neigh);
struct ea_list *(*make_tmp_attrs)(struct rte *rt, struct linpool *pool);
void (*store_tmp_attrs)(struct rte *rt, struct ea_list *attrs);
int (*import_control)(struct proto *, struct rte **rt, struct ea_list **attrs, struct linpool *pool);
- int (*reload_routes)(struct proto *);
- void (*feed_begin)(struct proto *, int initial);
- void (*feed_end)(struct proto *);
+ void (*reload_routes)(struct channel *);
+ void (*feed_begin)(struct channel *, int initial);
+ void (*feed_end)(struct channel *);
/*
* Routing entry hooks (called only for routes belonging to this protocol):
@@ -213,14 +211,6 @@ struct proto {
void (*rte_insert)(struct network *, struct rte *);
void (*rte_remove)(struct network *, struct rte *);
- struct rtable *table; /* Our primary routing table */
- struct rte_src *main_source; /* Primary route source */
- struct announce_hook *main_ahook; /* Primary announcement hook */
- struct announce_hook *ahooks; /* Announcement hooks for this protocol */
-
- struct fib_iterator *feed_iterator; /* Routing table iterator used during protocol feeding */
- struct announce_hook *feed_ahook; /* Announce hook we currently feed */
-
/* Hic sunt protocol-specific data */
};
@@ -244,25 +234,20 @@ struct proto_spec {
#define PDC_OUT_LIMIT_HIT 0x23 /* Route export limit reached */
-void *proto_new(struct proto_config *, unsigned size);
+void *proto_new(struct proto_config *);
void *proto_config_new(struct protocol *, int class);
void proto_copy_config(struct proto_config *dest, struct proto_config *src);
-void proto_request_feeding(struct proto *p);
-
-static inline void
-proto_copy_rest(struct proto_config *dest, struct proto_config *src, unsigned size)
-{ memcpy(dest + 1, src + 1, size - sizeof(struct proto_config)); }
void graceful_restart_recovery(void);
void graceful_restart_init(void);
void graceful_restart_show_status(void);
-void proto_graceful_restart_lock(struct proto *p);
-void proto_graceful_restart_unlock(struct proto *p);
+void channel_graceful_restart_lock(struct channel *c);
+void channel_graceful_restart_unlock(struct channel *c);
#define DEFAULT_GR_WAIT 240
-void proto_show_limit(struct proto_limit *l, const char *dsc);
-void proto_show_basic_info(struct proto *p);
+void channel_show_limit(struct channel_limit *l, const char *dsc);
+void channel_show_info(struct channel *c);
void proto_cmd_show(struct proto *, uint, int);
void proto_cmd_disable(struct proto *, uint, int);
@@ -285,7 +270,10 @@ proto_get_router_id(struct proto_config *pc)
return pc->router_id ? pc->router_id : pc->global->router_id;
}
-extern list active_proto_list;
+/* Moved from route.h to avoid dependency conflicts */
+static inline void rte_update(struct proto *p, net_addr *n, rte *new) { rte_update2(p->main_channel, n, new, p->main_source); }
+
+extern list proto_list;
/*
* Each protocol instance runs two different state machines:
@@ -361,16 +349,6 @@ void proto_notify_state(struct proto *p, unsigned state);
* as a result of received ROUTE-REFRESH request).
*/
-#define FS_HUNGRY 0
-#define FS_FEEDING 1 /* obsolete */
-#define FS_HAPPY 2
-#define FS_FLUSHING 3
-
-
-#define ES_DOWN 0
-#define ES_FEEDING 1
-#define ES_READY 2
-
/*
@@ -413,6 +391,7 @@ extern struct proto_config *cf_dev_proto;
#define PLD_OUT 2 /* Export limit */
#define PLD_MAX 3
+#define PLA_NONE 0 /* No limit */
#define PLA_WARN 1 /* Issue log warning */
#define PLA_BLOCK 2 /* Block new routes */
#define PLA_RESTART 4 /* Force protocol restart */
@@ -422,42 +401,176 @@ extern struct proto_config *cf_dev_proto;
#define PLS_ACTIVE 1 /* Limit was hit */
#define PLS_BLOCKED 2 /* Limit is active and blocking new routes */
-struct proto_limit {
+struct channel_limit {
u32 limit; /* Maximum number of prefixes */
- byte action; /* Action to take (PLA_*) */
- byte state; /* State of limit (PLS_*) */
+ u8 action; /* Action to take (PLA_*) */
+ u8 state; /* State of limit (PLS_*) */
};
-void proto_notify_limit(struct announce_hook *ah, struct proto_limit *l, int dir, u32 rt_count);
-void proto_verify_limits(struct announce_hook *ah);
-
-static inline void
-proto_reset_limit(struct proto_limit *l)
-{
- if (l)
- l->state = PLS_INITIAL;
-}
+void channel_notify_limit(struct channel *c, struct channel_limit *l, int dir, u32 rt_count);
/*
- * Route Announcement Hook
+ * Channels
*/
-struct announce_hook {
+struct channel_class {
+ uint channel_size; /* Size of channel data structure */
+ uint config_size; /* Size of channel config data structure */
+
+ struct channel * (*init)(struct channel *, struct channel_config *); /* Create new instance */
+ int (*reconfigure)(struct channel *, struct channel_config *); /* Try to reconfigure instance, returns success */
+ int (*start)(struct channel *); /* Start the instance */
+ int (*shutdown)(struct channel *); /* Stop the instance */
+
+ void (*copy_config)(struct channel_config *, struct channel_config *); /* Copy config from given channel instance */
+#if 0
+ void (*preconfig)(struct protocol *, struct config *); /* Just before configuring */
+ void (*postconfig)(struct proto_config *); /* After configuring each instance */
+
+
+ void (*dump)(struct proto *); /* Debugging dump */
+ void (*dump_attrs)(struct rte *); /* Dump protocol-dependent attributes */
+ void (*cleanup)(struct proto *); /* Called after shutdown when protocol became hungry/down */
+ void (*get_status)(struct proto *, byte *buf); /* Get instance status (for `show protocols' command) */
+ void (*get_route_info)(struct rte *, byte *buf, struct ea_list *attrs); /* Get route information (for `show route' command) */
+ int (*get_attr)(struct eattr *, byte *buf, int buflen); /* ASCIIfy dynamic attribute (returns GA_*) */
+ void (*show_proto_info)(struct proto *); /* Show protocol info (for `show protocols all' command) */
+
+#endif
+};
+
+struct channel_config {
node n;
- struct rtable *table;
+ const char *name;
+ const struct channel_class *channel;
+
+ struct rtable_config *table; /* Table we're attached to */
+ struct filter *in_filter, *out_filter; /* Attached filters */
+ struct channel_limit rx_limit; /* Limit for receiving routes from protocol
+ (relevant when in_keep_filtered is active) */
+ struct channel_limit in_limit; /* Limit for importing routes from protocol */
+ struct channel_limit out_limit; /* Limit for exporting routes to protocol */
+
+ u8 net_type; /* Routing table network type (NET_*), 0 for undefined */
+ u8 ra_mode; /* Mode of received route advertisements (RA_*) */
+ u16 preference; /* Default route preference */
+ u8 merge_limit; /* Maximal number of nexthops for RA_MERGED */
+ u8 in_keep_filtered; /* Routes rejected in import filter are kept */
+};
+
+struct channel {
+ node n; /* Node in proto->channels */
+ node table_node; /* Node in table->channels */
+
+ const char *name; /* Channel name (may be NULL) */
+ const struct channel_class *channel;
struct proto *proto;
+
+ struct rtable *table;
struct filter *in_filter; /* Input filter */
struct filter *out_filter; /* Output filter */
- struct proto_limit *rx_limit; /* Receive limit (for in_keep_filtered) */
- struct proto_limit *in_limit; /* Input limit */
- struct proto_limit *out_limit; /* Output limit */
- struct proto_stats *stats; /* Per-table protocol statistics */
- struct announce_hook *next; /* Next hook for the same protocol */
- int in_keep_filtered; /* Routes rejected in import filter are kept */
+ struct channel_limit rx_limit; /* Receive limit (for in_keep_filtered) */
+ struct channel_limit in_limit; /* Input limit */
+ struct channel_limit out_limit; /* Output limit */
+
+ struct event *feed_event; /* Event responsible for feeding */
+ struct fib_iterator feed_fit; /* Routing table iterator used during feeding */
+ struct proto_stats stats; /* Per-channel protocol statistics */
+
+ u8 net_type; /* Routing table network type (NET_*), 0 for undefined */
+ u8 ra_mode; /* Mode of received route advertisements (RA_*) */
+ u16 preference; /* Default route preference */
+ u8 merge_limit; /* Maximal number of nexthops for RA_MERGED */
+ u8 in_keep_filtered; /* Routes rejected in import filter are kept */
+ u8 disabled;
+
+ u8 channel_state;
+ u8 export_state; /* Route export state (ES_*, see below) */
+ u8 feed_active;
+ u8 flush_active;
+ u8 refeeding; /* We are refeeding (valid only if export_state == ES_FEEDING) */
+ u8 reloadable; /* Hook reload_routes() is allowed on the channel */
+ u8 gr_lock; /* Graceful restart mechanism should wait for this channel */
+ u8 gr_wait; /* Route export to channel is postponed until graceful restart */
+
+ bird_clock_t last_state_change; /* Time of last state transition */
};
-struct announce_hook *proto_add_announce_hook(struct proto *p, struct rtable *t, struct proto_stats *stats);
-struct announce_hook *proto_find_announce_hook(struct proto *p, struct rtable *t);
+
+/*
+ * Channel states
+ *
+ * CS_DOWN - The initial and the final state of a channel. There is no route
+ * exchange between the protocol and the table. Channel is not counted as
+ * active. Channel keeps a ptr to the table, but do not lock the table and is
+ * not linked in the table. Generally, new closed channels are created in
+ * protocols' init() hooks. The protocol is expected to explicitly activate its
+ * channels (by calling channel_init() or channel_open()).
+ *
+ * CS_START - The channel as a connection between the protocol and the table is
+ * initialized (counted as active by the protocol, linked in the table and keeps
+ * the table locked), but there is no current route exchange. There still may be
+ * routes associated with the channel in the routing table if the channel falls
+ * to CS_START from CS_UP. Generally, channels are initialized in protocols'
+ * start() hooks when going to PS_START.
+ *
+ * CS_UP - The channel is initialized and the route exchange is allowed. Note
+ * that even in CS_UP state, route export may still be down (ES_DOWN) by the
+ * core decision (e.g. waiting for table convergence after graceful restart).
+ * I.e., the protocol decides to open the channel but the core decides to start
+ * route export. Route import (caused by rte_update() from the protocol) is not
+ * restricted by that and is on volition of the protocol. Generally, channels
+ * are opened in protocols' start() hooks when going to PS_UP.
+ *
+ * CS_FLUSHING - The transitional state between initialized channel and closed
+ * channel. The channel is still initialized, but no route exchange is allowed.
+ * Instead, the associated table is running flush loop to remove routes imported
+ * through the channel. After that, the channel changes state to CS_DOWN and
+ * is detached from the table (the table is unlocked and the channel is unlinked
+ * from it). Unlike other states, the CS_FLUSHING state is not explicitly
+ * entered or left by the protocol. A protocol may request to close a channel
+ * (by calling channel_close()), which causes the channel to change state to
+ * CS_FLUSHING and later to CS_DOWN. Also note that channels are closed
+ * automatically by the core when the protocol is going down.
+ *
+ * Allowed transitions:
+ *
+ * CS_DOWN -> CS_START / CS_UP
+ * CS_START -> CS_UP / CS_FLUSHING
+ * CS_UP -> CS_START / CS_FLUSHING
+ * CS_FLUSHING -> CS_DOWN (automatic)
+ */
+
+#define CS_DOWN 0
+#define CS_START 1
+#define CS_UP 2
+#define CS_FLUSHING 3
+
+#define ES_DOWN 0
+#define ES_FEEDING 1
+#define ES_READY 2
+
+
+struct channel_config *proto_cf_find_channel(struct proto_config *p, uint net_type);
+static inline struct channel_config *proto_cf_main_channel(struct proto_config *pc)
+{ struct channel_config *cc = HEAD(pc->channels); return NODE_VALID(cc) ? cc : NULL; }
+
+struct channel *proto_find_channel_by_table(struct proto *p, struct rtable *t);
+struct channel *proto_add_channel(struct proto *p, struct channel_config *cf);
+int proto_configure_channel(struct proto *p, struct channel **c, struct channel_config *cf);
+
+void channel_set_state(struct channel *c, uint state);
+
+/*
+static inline void channel_init(struct channel *c) { channel_set_state(c, CS_START); }
+static inline void channel_open(struct channel *c) { channel_set_state(c, CS_UP); }
+static inline void channel_close(struct channel *c) { channel_set_state(c, CS_FLUSHING); }
+*/
+
+void channel_request_feeding(struct channel *c);
+void *channel_config_new(const struct channel_class *cc, uint net_type, struct proto_config *proto);
+int channel_reconfigure(struct channel *c, struct channel_config *cf);
+
#endif
diff --git a/nest/route.h b/nest/route.h
index 3969db6b..b5885ee3 100644
--- a/nest/route.h
+++ b/nest/route.h
@@ -11,11 +11,13 @@
#include "lib/lists.h"
#include "lib/resource.h"
-#include "lib/timer.h"
-#include "nest/protocol.h"
+#include "sysdep/unix/timer.h"
+//#include "nest/protocol.h"
+struct ea_list;
struct protocol;
struct proto;
+struct rte_src;
struct symbol;
struct filter;
struct cli;
@@ -35,11 +37,8 @@ struct cli;
struct fib_node {
struct fib_node *next; /* Next in hash chain */
struct fib_iterator *readers; /* List of readers of this node */
- byte pxlen;
- byte flags; /* User-defined */
- byte x0, x1; /* User-defined */
- u32 uid; /* Unique ID based on hash */
- ip_addr prefix; /* In host order */
+ byte flags; /* User-defined, will be removed */
+ net_addr addr[0];
};
struct fib_iterator { /* See lib/slists.h for an explanation */
@@ -50,7 +49,7 @@ struct fib_iterator { /* See lib/slists.h for an explanation */
uint hash;
};
-typedef void (*fib_init_func)(struct fib_node *);
+typedef void (*fib_init_fn)(void *);
struct fib {
pool *fib_pool; /* Pool holding all our data */
@@ -58,16 +57,26 @@ struct fib {
struct fib_node **hash_table; /* Node hash table */
uint hash_size; /* Number of hash table entries (a power of two) */
uint hash_order; /* Binary logarithm of hash_size */
- uint hash_shift; /* 16 - hash_log */
+ uint hash_shift; /* 32 - hash_order */
+ uint addr_type; /* Type of address data stored in fib (NET_*) */
+ uint node_size; /* FIB node size, 0 for nonuniform */
+ uint node_offset; /* Offset of fib_node struct inside of user data */
uint entries; /* Number of entries */
uint entries_min, entries_max; /* Entry count limits (else start rehashing) */
- fib_init_func init; /* Constructor */
+ fib_init_fn init; /* Constructor */
};
-void fib_init(struct fib *, pool *, unsigned node_size, unsigned hash_order, fib_init_func init);
-void *fib_find(struct fib *, ip_addr *, int); /* Find or return NULL if doesn't exist */
-void *fib_get(struct fib *, ip_addr *, int); /* Find or create new if nonexistent */
-void *fib_route(struct fib *, ip_addr, int); /* Longest-match routing lookup */
+static inline void * fib_node_to_user(struct fib *f, struct fib_node *e)
+{ return e ? (void *) ((char *) e - f->node_offset) : NULL; }
+
+static inline struct fib_node * fib_user_to_node(struct fib *f, void *e)
+{ return e ? (void *) ((char *) e + f->node_offset) : NULL; }
+
+void fib_init(struct fib *f, pool *p, uint addr_type, uint node_size, uint node_offset, uint hash_order, fib_init_fn init);
+void *fib_find(struct fib *, const net_addr *); /* Find or return NULL if doesn't exist */
+void *fib_get_chain(struct fib *f, const net_addr *a); /* Find first node in linked list from hash table */
+void *fib_get(struct fib *, const net_addr *); /* Find or create new if nonexistent */
+void *fib_route(struct fib *, const net_addr *); /* Longest-match routing lookup */
void fib_delete(struct fib *, void *); /* Remove fib entry */
void fib_free(struct fib *); /* Destroy the fib */
void fib_check(struct fib *); /* Consistency check for debugging */
@@ -78,34 +87,37 @@ void fit_put(struct fib_iterator *, struct fib_node *);
void fit_put_next(struct fib *f, struct fib_iterator *i, struct fib_node *n, uint hpos);
-#define FIB_WALK(fib, z) do { \
- struct fib_node *z, **ff = (fib)->hash_table; \
- uint count = (fib)->hash_size; \
- while (count--) \
- for(z = *ff++; z; z=z->next)
+#define FIB_WALK(fib, type, z) do { \
+ struct fib_node *fn_, **ff_ = (fib)->hash_table; \
+ uint count_ = (fib)->hash_size; \
+ type *z; \
+ while (count_--) \
+ for (fn_ = *ff_++; z = fib_node_to_user(fib, fn_); fn_=fn_->next)
#define FIB_WALK_END } while (0)
#define FIB_ITERATE_INIT(it, fib) fit_init(it, fib)
-#define FIB_ITERATE_START(fib, it, z) do { \
- struct fib_node *z = fit_get(fib, it); \
- uint count = (fib)->hash_size; \
- uint hpos = (it)->hash; \
+#define FIB_ITERATE_START(fib, it, type, z) do { \
+ struct fib_node *fn_ = fit_get(fib, it); \
+ uint count_ = (fib)->hash_size; \
+ uint hpos_ = (it)->hash; \
+ type *z; \
for(;;) { \
- if (!z) \
+ if (!fn_) \
{ \
- if (++hpos >= count) \
+ if (++hpos_ >= count_) \
break; \
- z = (fib)->hash_table[hpos]; \
+ fn_ = (fib)->hash_table[hpos_]; \
continue; \
- }
+ } \
+ z = fib_node_to_user(fib, fn_);
-#define FIB_ITERATE_END(z) z = z->next; } } while(0)
+#define FIB_ITERATE_END fn_ = fn_->next; } } while(0)
-#define FIB_ITERATE_PUT(it, z) fit_put(it, z)
+#define FIB_ITERATE_PUT(it) fit_put(it, fn_)
-#define FIB_ITERATE_PUT_NEXT(it, fib, z) fit_put_next(fib, it, z, hpos)
+#define FIB_ITERATE_PUT_NEXT(it, fib) fit_put_next(fib, it, fn_, hpos_)
#define FIB_ITERATE_UNLINK(it, fib) fit_get(fib, it)
@@ -126,6 +138,7 @@ struct rtable_config {
char *name;
struct rtable *table;
struct proto_config *krt_attached; /* Kernel syncer attached to this table */
+ uint addr_type; /* Type of address data stored in table (NET_*) */
int gc_max_ops; /* Maximum number of operations before GC is run */
int gc_min_time; /* Minimum time between two consecutive GC runs */
byte sorted; /* Routes of network are sorted according to rte_better() */
@@ -135,7 +148,8 @@ typedef struct rtable {
node n; /* Node in list of all tables */
struct fib fib;
char *name; /* Name of this table */
- list hooks; /* List of announcement hooks */
+ list channels; /* List of attached channels (struct channel) */
+ uint addr_type; /* Type of address data stored in table (NET_*) */
int pipe_busy; /* Pipe loop detection */
int use_count; /* Number of protocols using this table */
struct hostcache *hostcache;
@@ -147,7 +161,6 @@ typedef struct rtable {
struct event *rt_event; /* Routing table event */
int gc_counter; /* Number of operations since last GC */
bird_clock_t gc_time; /* Time of last GC */
- byte gc_scheduled; /* GC is scheduled */
byte prune_state; /* Table prune state, 1 -> scheduled, 2-> running */
byte hcu_scheduled; /* Hostcache update is scheduled */
byte nhu_state; /* Next Hop Update state */
@@ -155,13 +168,9 @@ typedef struct rtable {
struct fib_iterator nhu_fit; /* Next Hop Update FIB iterator */
} rtable;
-#define RPS_NONE 0
-#define RPS_SCHEDULED 1
-#define RPS_RUNNING 2
-
typedef struct network {
- struct fib_node n; /* FIB flags reserved for kernel syncer */
struct rte *routes; /* Available routes for this network */
+ struct fib_node n; /* FIB flags reserved for kernel syncer */
} net;
struct hostcache {
@@ -194,7 +203,7 @@ struct hostentry {
typedef struct rte {
struct rte *next;
net *net; /* Network this RTE belongs to */
- struct announce_hook *sender; /* Announce hook used to send the route to the routing table */
+ struct channel *sender; /* Channel used to send the route to the routing table */
struct rta *attrs; /* Attributes of this route */
byte flags; /* Flags (REF_...) */
byte pflags; /* Protocol-specific flags */
@@ -268,17 +277,20 @@ void rt_commit(struct config *new, struct config *old);
void rt_lock_table(rtable *);
void rt_unlock_table(rtable *);
void rt_setup(pool *, rtable *, char *, struct rtable_config *);
-static inline net *net_find(rtable *tab, ip_addr addr, unsigned len) { return (net *) fib_find(&tab->fib, &addr, len); }
-static inline net *net_get(rtable *tab, ip_addr addr, unsigned len) { return (net *) fib_get(&tab->fib, &addr, len); }
+static inline net *net_find(rtable *tab, const net_addr *addr) { return (net *) fib_find(&tab->fib, addr); }
+static inline net *net_get(rtable *tab, const net_addr *addr) { return (net *) fib_get(&tab->fib, addr); }
+void *net_route(rtable *tab, const net_addr *n);
+int net_roa_check(rtable *tab, const net_addr *n, u32 asn);
rte *rte_find(net *net, struct rte_src *src);
rte *rte_get_temp(struct rta *);
-void rte_update2(struct announce_hook *ah, net *net, rte *new, struct rte_src *src);
-static inline void rte_update(struct proto *p, net *net, rte *new) { rte_update2(p->main_ahook, net, new, p->main_source); }
+void rte_update2(struct channel *c, net_addr *n, rte *new, struct rte_src *src);
+/* rte_update() moved to protocol.h to avoid dependency conflicts */
void rte_discard(rtable *tab, rte *old);
-int rt_examine(rtable *t, ip_addr prefix, int pxlen, struct proto *p, struct filter *filter);
-rte *rt_export_merged(struct announce_hook *ah, net *net, rte **rt_free, struct ea_list **tmpa, int silent);
-void rt_refresh_begin(rtable *t, struct announce_hook *ah);
-void rt_refresh_end(rtable *t, struct announce_hook *ah);
+int rt_examine(rtable *t, net_addr *a, struct proto *p, struct filter *filter);
+rte *rt_export_merged(struct channel *c, net *net, rte **rt_free, struct ea_list **tmpa, int silent);
+void rt_refresh_begin(rtable *t, struct channel *c);
+void rt_refresh_end(rtable *t, struct channel *c);
+void rt_schedule_prune(rtable *t);
void rte_dump(rte *);
void rte_free(rte *);
rte *rte_do_cow(rte *);
@@ -286,29 +298,20 @@ static inline rte * rte_cow(rte *r) { return (r->flags & REF_COW) ? rte_do_cow(r
rte *rte_cow_rta(rte *r, linpool *lp);
void rt_dump(rtable *);
void rt_dump_all(void);
-int rt_feed_baby(struct proto *p);
-void rt_feed_baby_abort(struct proto *p);
-int rt_prune_loop(void);
-struct rtable_config *rt_new_table(struct symbol *s);
-
-static inline void
-rt_mark_for_prune(rtable *tab)
-{
- if (tab->prune_state == RPS_RUNNING)
- fit_get(&tab->fib, &tab->prune_fit);
+int rt_feed_channel(struct channel *c);
+void rt_feed_channel_abort(struct channel *c);
+struct rtable_config *rt_new_table(struct symbol *s, uint addr_type);
- tab->prune_state = RPS_SCHEDULED;
-}
struct rt_show_data {
- ip_addr prefix;
- unsigned pxlen;
+ net_addr *addr;
rtable *table;
struct filter *filter;
int verbose;
struct fib_iterator fit;
struct proto *show_protocol;
struct proto *export_protocol;
+ struct channel *export_channel;
int export_mode, primary_only, filtered;
struct config *running_on_config;
int net_counter, rt_counter, show_counter;
@@ -349,22 +352,22 @@ struct rte_src {
typedef struct rta {
struct rta *next, **pprev; /* Hash chain */
+ u32 uc; /* Use count */
+ u32 hash_key; /* Hash over important fields */
+ struct mpnh *nexthops; /* Next-hops for multipath routes */
+ struct ea_list *eattrs; /* Extended Attribute chain */
struct rte_src *src; /* Route source that created the route */
- unsigned uc; /* Use count */
+ struct hostentry *hostentry; /* Hostentry for recursive next-hops */
+ struct iface *iface; /* Outgoing interface */
+ ip_addr gw; /* Next hop */
+ ip_addr from; /* Advertising router */
+ u32 igp_metric; /* IGP metric to next hop (for iBGP routes) */
byte source; /* Route source (RTS_...) */
byte scope; /* Route scope (SCOPE_... -- see ip.h) */
byte cast; /* Casting type (RTC_...) */
byte dest; /* Route destination type (RTD_...) */
byte flags; /* Route flags (RTF_...), now unused */
byte aflags; /* Attribute cache flags (RTAF_...) */
- u16 hash_key; /* Hash over important fields */
- u32 igp_metric; /* IGP metric to next hop (for iBGP routes) */
- ip_addr gw; /* Next hop */
- ip_addr from; /* Advertising router */
- struct hostentry *hostentry; /* Hostentry for recursive next-hops */
- struct iface *iface; /* Outgoing interface */
- struct mpnh *nexthops; /* Next-hops for multipath routes */
- struct ea_list *eattrs; /* Extended Attribute chain */
} rta;
#define RTS_DUMMY 0 /* Dummy route to be removed soon */
@@ -558,87 +561,14 @@ extern struct protocol *attr_class_to_protocol[EAP_MAX];
#define DEF_PREF_BABEL 130 /* Babel */
#define DEF_PREF_RIP 120 /* RIP */
#define DEF_PREF_BGP 100 /* BGP */
-#define DEF_PREF_PIPE 70 /* Routes piped from other tables */
#define DEF_PREF_INHERITED 10 /* Routes inherited from other routing daemons */
-
/*
* Route Origin Authorization
*/
-struct roa_item {
- u32 asn;
- byte maxlen;
- byte src;
- struct roa_item *next;
-};
-
-struct roa_node {
- struct fib_node n;
- struct roa_item *items;
- // u32 cached_asn;
-};
-
-struct roa_table {
- node n; /* Node in roa_table_list */
- struct fib fib;
- char *name; /* Name of this ROA table */
- struct roa_table_config *cf; /* Configuration of this ROA table */
-};
-
-struct roa_item_config {
- ip_addr prefix;
- byte pxlen, maxlen;
- u32 asn;
- struct roa_item_config *next;
-};
-
-struct roa_table_config {
- node n; /* Node in config->rpa_tables */
- char *name; /* Name of this ROA table */
- struct roa_table *table;
-
- struct roa_item_config *roa_items; /* Preconfigured ROA items */
-
- // char *filename;
- // int gc_max_ops; /* Maximum number of operations before GC is run */
- // int gc_min_time; /* Minimum time between two consecutive GC runs */
-};
-
-struct roa_show_data {
- struct fib_iterator fit;
- struct roa_table *table;
- ip_addr prefix;
- byte pxlen;
- byte mode; /* ROA_SHOW_* values */
- u32 asn; /* Filter ASN, 0 -> all */
-};
-
#define ROA_UNKNOWN 0
#define ROA_VALID 1
#define ROA_INVALID 2
-#define ROA_SRC_ANY 0
-#define ROA_SRC_CONFIG 1
-#define ROA_SRC_DYNAMIC 2
-
-#define ROA_SHOW_ALL 0
-#define ROA_SHOW_PX 1
-#define ROA_SHOW_IN 2
-#define ROA_SHOW_FOR 3
-
-extern struct roa_table *roa_table_default;
-
-void roa_add_item(struct roa_table *t, ip_addr prefix, byte pxlen, byte maxlen, u32 asn, byte src);
-void roa_delete_item(struct roa_table *t, ip_addr prefix, byte pxlen, byte maxlen, u32 asn, byte src);
-void roa_flush(struct roa_table *t, byte src);
-byte roa_check(struct roa_table *t, ip_addr prefix, byte pxlen, u32 asn);
-struct roa_table_config * roa_new_table_config(struct symbol *s);
-void roa_add_item_config(struct roa_table_config *rtc, ip_addr prefix, byte pxlen, byte maxlen, u32 asn);
-void roa_init(void);
-void roa_preconfig(struct config *c);
-void roa_commit(struct config *new, struct config *old);
-void roa_show(struct roa_show_data *d);
-
-
#endif
diff --git a/nest/rt-attr.c b/nest/rt-attr.c
index f181b452..5041ab9f 100644
--- a/nest/rt-attr.c
+++ b/nest/rt-attr.c
@@ -52,18 +52,19 @@
#include "nest/attrs.h"
#include "lib/alloca.h"
#include "lib/hash.h"
+#include "lib/idm.h"
#include "lib/resource.h"
#include "lib/string.h"
+#include <stddef.h>
+
pool *rta_pool;
static slab *rta_slab;
static slab *mpnh_slab;
static slab *rte_src_slab;
-/* rte source ID bitmap */
-static u32 *src_ids;
-static u32 src_id_size, src_id_used, src_id_pos;
+static struct idm src_ids;
#define SRC_ID_INIT_SIZE 4
/* rte source hash */
@@ -87,64 +88,11 @@ rte_src_init(void)
{
rte_src_slab = sl_new(rta_pool, sizeof(struct rte_src));
- src_id_pos = 0;
- src_id_size = SRC_ID_INIT_SIZE;
- src_ids = mb_allocz(rta_pool, src_id_size * sizeof(u32));
-
- /* ID 0 is reserved */
- src_ids[0] = 1;
- src_id_used = 1;
+ idm_init(&src_ids, rta_pool, SRC_ID_INIT_SIZE);
HASH_INIT(src_hash, rta_pool, RSH_INIT_ORDER);
}
-static inline int u32_cto(uint x) { return ffs(~x) - 1; }
-
-static inline u32
-rte_src_alloc_id(void)
-{
- int i, j;
- for (i = src_id_pos; i < src_id_size; i++)
- if (src_ids[i] != 0xffffffff)
- goto found;
-
- /* If we are at least 7/8 full, expand */
- if (src_id_used > (src_id_size * 28))
- {
- src_id_size *= 2;
- src_ids = mb_realloc(src_ids, src_id_size * sizeof(u32));
- bzero(src_ids + i, (src_id_size - i) * sizeof(u32));
- goto found;
- }
-
- for (i = 0; i < src_id_pos; i++)
- if (src_ids[i] != 0xffffffff)
- goto found;
-
- ASSERT(0);
-
- found:
- ASSERT(i < 0x8000000);
-
- src_id_pos = i;
- j = u32_cto(src_ids[i]);
-
- src_ids[i] |= (1 << j);
- src_id_used++;
- return 32 * i + j;
-}
-
-static inline void
-rte_src_free_id(u32 id)
-{
- int i = id / 32;
- int j = id % 32;
-
- ASSERT((i < src_id_size) && (src_ids[i] & (1 << j)));
- src_ids[i] &= ~(1 << j);
- src_id_used--;
-}
-
HASH_DEFINE_REHASH_FN(RSH, struct rte_src)
@@ -165,7 +113,7 @@ rt_get_source(struct proto *p, u32 id)
src = sl_alloc(rte_src_slab);
src->proto = p;
src->private_id = id;
- src->global_id = rte_src_alloc_id();
+ src->global_id = idm_alloc(&src_ids);
src->uc = 0;
HASH_INSERT2(src_hash, RSH, rta_pool, src);
@@ -181,7 +129,7 @@ rt_prune_sources(void)
if (src->uc == 0)
{
HASH_DO_REMOVE(src_hash, RSH, sp);
- rte_src_free_id(src->global_id);
+ idm_free(&src_ids, src->global_id);
sl_free(rte_src_slab, src);
}
}
@@ -195,10 +143,10 @@ rt_prune_sources(void)
* Multipath Next Hop
*/
-static inline uint
+static inline u32
mpnh_hash(struct mpnh *x)
{
- uint h = 0;
+ u32 h = 0;
for (; x; x = x->next)
h ^= ipa_hash(x->gw);
@@ -929,7 +877,8 @@ ea_dump(ea_list *e)
inline uint
ea_hash(ea_list *e)
{
- u32 h = 0;
+ const u64 mul = 0x68576150f3d6847;
+ u64 h = 0xafcef24eda8b29;
int i;
if (e) /* Assuming chain of length 1 */
@@ -937,29 +886,18 @@ ea_hash(ea_list *e)
for(i=0; i<e->count; i++)
{
struct eattr *a = &e->attrs[i];
- h ^= a->id;
+ h ^= a->id; h *= mul;
if (a->type & EAF_EMBEDDED)
h ^= a->u.data;
else
{
struct adata *d = a->u.ptr;
- int size = d->length;
- byte *z = d->data;
- while (size >= 4)
- {
- h ^= *(u32 *)z;
- z += 4;
- size -= 4;
- }
- while (size--)
- h = (h >> 24) ^ (h << 8) ^ *z++;
+ h ^= mem_hash(d->data, d->length);
}
+ h *= mul;
}
- h ^= h >> 16;
- h ^= h >> 6;
- h &= 0xffff;
}
- return h;
+ return (h >> 32) ^ (h & 0xffffffff);
}
/**
@@ -1008,8 +946,23 @@ rta_alloc_hash(void)
static inline uint
rta_hash(rta *a)
{
- return (((uint) (uintptr_t) a->src) ^ ipa_hash(a->gw) ^
- mpnh_hash(a->nexthops) ^ ea_hash(a->eattrs)) & 0xffff;
+ mem_hash_t h;
+ mem_hash_init(&h);
+#define MIX(f) mem_hash_mix(&h, &(a->f), sizeof(a->f));
+ MIX(src);
+ MIX(hostentry);
+ MIX(iface);
+ MIX(gw);
+ MIX(from);
+ MIX(igp_metric);
+ MIX(source);
+ MIX(scope);
+ MIX(cast);
+ MIX(dest);
+ MIX(flags);
+ MIX(aflags);
+
+ return mem_hash_value(&h) ^ mpnh_hash(a->nexthops) ^ ea_hash(a->eattrs);
}
static inline int
diff --git a/nest/rt-dev.c b/nest/rt-dev.c
index ed6c06af..d98cd79f 100644
--- a/nest/rt-dev.c
+++ b/nest/rt-dev.c
@@ -24,14 +24,17 @@
#include "lib/resource.h"
#include "lib/string.h"
+
static void
-dev_ifa_notify(struct proto *p, unsigned c, struct ifa *ad)
+dev_ifa_notify(struct proto *P, uint flags, struct ifa *ad)
{
- struct rt_dev_config *P = (void *) p->cf;
+ struct rt_dev_proto *p = (void *) P;
+ struct rt_dev_config *cf = (void *) P->cf;
+ struct channel *c;
- if (!EMPTY_LIST(P->iface_list) &&
- !iface_patt_find(&P->iface_list, ad->iface, ad->iface->addr))
- /* Empty list is automagically treated as "*" */
+ if (!EMPTY_LIST(cf->iface_list) &&
+ !iface_patt_find(&cf->iface_list, ad->iface, ad->iface->addr))
+ /* Empty list is automatically treated as "*" */
return;
if (ad->flags & IA_SECONDARY)
@@ -40,35 +43,36 @@ dev_ifa_notify(struct proto *p, unsigned c, struct ifa *ad)
if (ad->scope <= SCOPE_LINK)
return;
- if (c & IF_CHANGE_DOWN)
- {
- net *n;
+ if (ad->prefix.type == NET_IP4)
+ c = p->ip4_channel;
+ else if (ad->prefix.type == NET_IP6)
+ c = p->ip6_channel;
+ else
+ return;
+
+ if (!c)
+ return;
+ if (flags & IF_CHANGE_DOWN)
+ {
DBG("dev_if_notify: %s:%I going down\n", ad->iface->name, ad->ip);
- n = net_find(p->table, ad->prefix, ad->pxlen);
- if (!n)
- {
- DBG("dev_if_notify: device shutdown: prefix not found\n");
- return;
- }
/* Use iface ID as local source ID */
- struct rte_src *src = rt_get_source(p, ad->iface->index);
- rte_update2(p->main_ahook, n, NULL, src);
+ struct rte_src *src = rt_get_source(P, ad->iface->index);
+ rte_update2(c, &ad->prefix, NULL, src);
}
- else if (c & IF_CHANGE_UP)
+ else if (flags & IF_CHANGE_UP)
{
rta *a;
- net *n;
rte *e;
DBG("dev_if_notify: %s:%I going up\n", ad->iface->name, ad->ip);
- if (P->check_link && !(ad->iface->flags & IF_LINK_UP))
+ if (cf->check_link && !(ad->iface->flags & IF_LINK_UP))
return;
/* Use iface ID as local source ID */
- struct rte_src *src = rt_get_source(p, ad->iface->index);
+ struct rte_src *src = rt_get_source(P, ad->iface->index);
rta a0 = {
.src = src,
@@ -80,11 +84,9 @@ dev_ifa_notify(struct proto *p, unsigned c, struct ifa *ad)
};
a = rta_lookup(&a0);
- n = net_get(p->table, ad->prefix, ad->pxlen);
e = rte_get_temp(a);
- e->net = n;
e->pflags = 0;
- rte_update2(p->main_ahook, n, e, src);
+ rte_update2(c, &ad->prefix, e, src);
}
}
@@ -108,30 +110,44 @@ dev_if_notify(struct proto *p, uint c, struct iface *iface)
static struct proto *
-dev_init(struct proto_config *c)
+dev_init(struct proto_config *CF)
{
- struct proto *p = proto_new(c, sizeof(struct proto));
+ struct proto *P = proto_new(CF);
+ struct rt_dev_proto *p = (void *) P;
+ // struct rt_dev_config *cf = (void *) CF;
+
+ proto_configure_channel(P, &p->ip4_channel, proto_cf_find_channel(CF, NET_IP4));
+ proto_configure_channel(P, &p->ip6_channel, proto_cf_find_channel(CF, NET_IP6));
+
+ P->if_notify = dev_if_notify;
+ P->ifa_notify = dev_ifa_notify;
- p->if_notify = dev_if_notify;
- p->ifa_notify = dev_ifa_notify;
- return p;
+ return P;
}
static int
-dev_reconfigure(struct proto *p, struct proto_config *new)
+dev_reconfigure(struct proto *P, struct proto_config *CF)
{
- struct rt_dev_config *o = (struct rt_dev_config *) p->cf;
- struct rt_dev_config *n = (struct rt_dev_config *) new;
+ struct rt_dev_proto *p = (void *) P;
+ struct rt_dev_config *o = (void *) P->cf;
+ struct rt_dev_config *n = (void *) CF;
+
+ if (!iface_patts_equal(&o->iface_list, &n->iface_list, NULL) ||
+ (o->check_link != n->check_link))
+ return 0;
+
+ return
+ proto_configure_channel(P, &p->ip4_channel, proto_cf_find_channel(CF, NET_IP4)) &&
+ proto_configure_channel(P, &p->ip6_channel, proto_cf_find_channel(CF, NET_IP6));
- return iface_patts_equal(&o->iface_list, &n->iface_list, NULL) &&
- (o->check_link == n->check_link);
+ return 1;
}
static void
dev_copy_config(struct proto_config *dest, struct proto_config *src)
{
- struct rt_dev_config *d = (struct rt_dev_config *) dest;
- struct rt_dev_config *s = (struct rt_dev_config *) src;
+ struct rt_dev_config *d = (void *) dest;
+ struct rt_dev_config *s = (void *) src;
/*
* We copy iface_list as ifaces can be shared by more direct protocols.
@@ -146,7 +162,9 @@ dev_copy_config(struct proto_config *dest, struct proto_config *src)
struct protocol proto_device = {
.name = "Direct",
.template = "direct%d",
- .preference = DEF_PREF_DIRECT,
+ .preference = DEF_PREF_DIRECT,
+ .channel_mask = NB_IP,
+ .proto_size = sizeof(struct rt_dev_proto),
.config_size = sizeof(struct rt_dev_config),
.init = dev_init,
.reconfigure = dev_reconfigure,
diff --git a/nest/rt-dev.h b/nest/rt-dev.h
index 191b9a02..20b88a64 100644
--- a/nest/rt-dev.h
+++ b/nest/rt-dev.h
@@ -15,4 +15,10 @@ struct rt_dev_config {
int check_link;
};
+struct rt_dev_proto {
+ struct proto p;
+ struct channel *ip4_channel;
+ struct channel *ip6_channel;
+};
+
#endif
diff --git a/nest/rt-fib.c b/nest/rt-fib.c
index a73de1fd..8021ea24 100644
--- a/nest/rt-fib.c
+++ b/nest/rt-fib.c
@@ -43,16 +43,17 @@
#define HASH_DEF_ORDER 10
#define HASH_HI_MARK *4
#define HASH_HI_STEP 2
-#define HASH_HI_MAX 16 /* Must be at most 16 */
+#define HASH_HI_MAX 16
#define HASH_LO_MARK /5
#define HASH_LO_STEP 2
#define HASH_LO_MIN 10
+
static void
fib_ht_alloc(struct fib *f)
{
f->hash_size = 1 << f->hash_order;
- f->hash_shift = 16 - f->hash_order;
+ f->hash_shift = 32 - f->hash_order;
if (f->hash_order > HASH_HI_MAX - HASH_HI_STEP)
f->entries_max = ~0;
else
@@ -72,16 +73,9 @@ fib_ht_free(struct fib_node **h)
mb_free(h);
}
-static inline unsigned
-fib_hash(struct fib *f, ip_addr *a)
-{
- return ipa_hash(*a) >> f->hash_shift;
-}
-static void
-fib_dummy_init(struct fib_node *dummy UNUSED)
-{
-}
+static u32
+fib_hash(struct fib *f, const net_addr *a);
/**
* fib_init - initialize a new FIB
@@ -96,18 +90,23 @@ fib_dummy_init(struct fib_node *dummy UNUSED)
* This function initializes a newly allocated FIB and prepares it for use.
*/
void
-fib_init(struct fib *f, pool *p, unsigned node_size, unsigned hash_order, fib_init_func init)
+fib_init(struct fib *f, pool *p, uint addr_type, uint node_size, uint node_offset, uint hash_order, fib_init_fn init)
{
+ uint addr_length = net_addr_length[addr_type];
+
if (!hash_order)
hash_order = HASH_DEF_ORDER;
f->fib_pool = p;
- f->fib_slab = sl_new(p, node_size);
+ f->fib_slab = addr_length ? sl_new(p, node_size + addr_length) : NULL;
+ f->addr_type = addr_type;
+ f->node_size = node_size;
+ f->node_offset = node_offset;
f->hash_order = hash_order;
fib_ht_alloc(f);
bzero(f->hash_table, f->hash_size * sizeof(struct fib_node *));
f->entries = 0;
f->entries_min = 0;
- f->init = init ? : fib_dummy_init;
+ f->init = init;
}
static void
@@ -133,7 +132,7 @@ fib_rehash(struct fib *f, int step)
while (e = x)
{
x = e->next;
- nh = fib_hash(f, &e->prefix);
+ nh = fib_hash(f, e->addr);
while (nh > ni)
{
*t = NULL;
@@ -153,127 +152,201 @@ fib_rehash(struct fib *f, int step)
fib_ht_free(m);
}
+#define CAST(t) (const net_addr_##t *)
+#define CAST2(t) (net_addr_##t *)
+
+#define FIB_HASH(f,a,t) (net_hash_##t(CAST(t) a) >> f->hash_shift)
+
+#define FIB_FIND(f,a,t) \
+ ({ \
+ struct fib_node *e = f->hash_table[FIB_HASH(f, a, t)]; \
+ while (e && !net_equal_##t(CAST(t) e->addr, CAST(t) a)) \
+ e = e->next; \
+ fib_node_to_user(f, e); \
+ })
+
+#define FIB_INSERT(f,a,e,t) \
+ ({ \
+ u32 h = net_hash_##t(CAST(t) a); \
+ struct fib_node **ee = f->hash_table + (h >> f->hash_shift); \
+ struct fib_node *g; \
+ \
+ while ((g = *ee) && (net_hash_##t(CAST(t) g->addr) < h)) \
+ ee = &g->next; \
+ \
+ net_copy_##t(CAST2(t) e->addr, CAST(t) a); \
+ e->next = *ee; \
+ *ee = e; \
+ })
+
+
+static u32
+fib_hash(struct fib *f, const net_addr *a)
+{
+ ASSERT(f->addr_type == a->type);
+
+ switch (f->addr_type)
+ {
+ case NET_IP4: return FIB_HASH(f, a, ip4);
+ case NET_IP6: return FIB_HASH(f, a, ip6);
+ case NET_VPN4: return FIB_HASH(f, a, vpn4);
+ case NET_VPN6: return FIB_HASH(f, a, vpn6);
+ case NET_ROA4: return FIB_HASH(f, a, roa4);
+ case NET_ROA6: return FIB_HASH(f, a, roa6);
+ default: bug("invalid type");
+ }
+}
+
+void *
+fib_get_chain(struct fib *f, const net_addr *a)
+{
+ ASSERT(f->addr_type == a->type);
+
+ struct fib_node *e = f->hash_table[fib_hash(f, a)];
+ return e;
+}
+
/**
* fib_find - search for FIB node by prefix
* @f: FIB to search in
- * @a: pointer to IP address of the prefix
- * @len: prefix length
+ * @n: network address
*
* Search for a FIB node corresponding to the given prefix, return
* a pointer to it or %NULL if no such node exists.
*/
void *
-fib_find(struct fib *f, ip_addr *a, int len)
+fib_find(struct fib *f, const net_addr *a)
{
- struct fib_node *e = f->hash_table[fib_hash(f, a)];
-
- while (e && (e->pxlen != len || !ipa_equal(*a, e->prefix)))
- e = e->next;
- return e;
+ ASSERT(f->addr_type == a->type);
+
+ switch (f->addr_type)
+ {
+ case NET_IP4: return FIB_FIND(f, a, ip4);
+ case NET_IP6: return FIB_FIND(f, a, ip6);
+ case NET_VPN4: return FIB_FIND(f, a, vpn4);
+ case NET_VPN6: return FIB_FIND(f, a, vpn6);
+ case NET_ROA4: return FIB_FIND(f, a, roa4);
+ case NET_ROA6: return FIB_FIND(f, a, roa6);
+ default: bug("invalid type");
+ }
}
-/*
-int
-fib_histogram(struct fib *f)
+static void
+fib_insert(struct fib *f, const net_addr *a, struct fib_node *e)
{
- log(L_WARN "Histogram dump start %d %d", f->hash_size, f->entries);
-
- int i, j;
- struct fib_node *e;
-
- for (i = 0; i < f->hash_size; i++)
- {
- j = 0;
- for (e = f->hash_table[i]; e != NULL; e = e->next)
- j++;
- if (j > 0)
- log(L_WARN "Histogram line %d: %d", i, j);
- }
-
- log(L_WARN "Histogram dump end");
+ ASSERT(f->addr_type == a->type);
+
+ switch (f->addr_type)
+ {
+ case NET_IP4: FIB_INSERT(f, a, e, ip4); return;
+ case NET_IP6: FIB_INSERT(f, a, e, ip6); return;
+ case NET_VPN4: FIB_INSERT(f, a, e, vpn4); return;
+ case NET_VPN6: FIB_INSERT(f, a, e, vpn6); return;
+ case NET_ROA4: FIB_INSERT(f, a, e, roa4); return;
+ case NET_ROA6: FIB_INSERT(f, a, e, roa6); return;
+ default: bug("invalid type");
+ }
}
-*/
+
/**
* fib_get - find or create a FIB node
* @f: FIB to work with
- * @a: pointer to IP address of the prefix
- * @len: prefix length
+ * @n: network address
*
* Search for a FIB node corresponding to the given prefix and
* return a pointer to it. If no such node exists, create it.
*/
void *
-fib_get(struct fib *f, ip_addr *a, int len)
+fib_get(struct fib *f, const net_addr *a)
{
- uint h = ipa_hash(*a);
- struct fib_node **ee = f->hash_table + (h >> f->hash_shift);
- struct fib_node *g, *e = *ee;
- u32 uid = h << 16;
-
- while (e && (e->pxlen != len || !ipa_equal(*a, e->prefix)))
- e = e->next;
- if (e)
- return e;
-#ifdef DEBUGGING
- if (len < 0 || len > BITS_PER_IP_ADDRESS || !ip_is_prefix(*a,len))
- bug("fib_get() called for invalid address");
-#endif
+ void *b = fib_find(f, a);
+ if (b)
+ return b;
- while ((g = *ee) && g->uid < uid)
- ee = &g->next;
- while ((g = *ee) && g->uid == uid)
- {
- ee = &g->next;
- uid++;
- }
+ if (f->fib_slab)
+ b = sl_alloc(f->fib_slab);
+ else
+ b = mb_alloc(f->fib_pool, f->node_size + a->length);
- if ((uid >> 16) != h)
- log(L_ERR "FIB hash table chains are too long");
+ struct fib_node *e = fib_user_to_node(f, b);
+ e->readers = NULL;
+ e->flags = 0;
+ fib_insert(f, a, e);
- // log (L_WARN "FIB_GET %I %x %x", *a, h, uid);
+ memset(b, 0, f->node_offset);
+ if (f->init)
+ f->init(b);
- e = sl_alloc(f->fib_slab);
- e->prefix = *a;
- e->pxlen = len;
- e->next = *ee;
- e->uid = uid;
- *ee = e;
- e->readers = NULL;
- f->init(e);
if (f->entries++ > f->entries_max)
fib_rehash(f, HASH_HI_STEP);
- return e;
+ return b;
+}
+
+static inline void *
+fib_route_ip4(struct fib *f, net_addr_ip4 *n)
+{
+ void *r;
+
+ while (!(r = fib_find(f, (net_addr *) n)) && (n->pxlen > 0))
+ {
+ n->pxlen--;
+ ip4_clrbit(&n->prefix, n->pxlen);
+ }
+
+ return r;
+}
+
+static inline void *
+fib_route_ip6(struct fib *f, net_addr_ip6 *n)
+{
+ void *r;
+
+ while (!(r = fib_find(f, (net_addr *) n)) && (n->pxlen > 0))
+ {
+ n->pxlen--;
+ ip6_clrbit(&n->prefix, n->pxlen);
+ }
+
+ return r;
}
/**
* fib_route - CIDR routing lookup
* @f: FIB to search in
- * @a: pointer to IP address of the prefix
- * @len: prefix length
+ * @n: network address
*
* Search for a FIB node with longest prefix matching the given
* network, that is a node which a CIDR router would use for routing
* that network.
*/
void *
-fib_route(struct fib *f, ip_addr a, int len)
+fib_route(struct fib *f, const net_addr *n)
{
- ip_addr a0;
- void *t;
-
- while (len >= 0)
- {
- a0 = ipa_and(a, ipa_mkmask(len));
- t = fib_find(f, &a0, len);
- if (t)
- return t;
- len--;
- }
- return NULL;
+ ASSERT(f->addr_type == n->type);
+
+ net_addr *n0 = alloca(n->length);
+ net_copy(n0, n);
+
+ switch (n->type)
+ {
+ case NET_IP4:
+ case NET_VPN4:
+ case NET_ROA4:
+ return fib_route_ip4(f, (net_addr_ip4 *) n0);
+
+ case NET_IP6:
+ case NET_VPN6:
+ case NET_ROA6:
+ return fib_route_ip6(f, (net_addr_ip6 *) n0);
+
+ default:
+ return NULL;
+ }
}
+
static inline void
fib_merge_readers(struct fib_iterator *i, struct fib_node *to)
{
@@ -320,8 +393,8 @@ fib_merge_readers(struct fib_iterator *i, struct fib_node *to)
void
fib_delete(struct fib *f, void *E)
{
- struct fib_node *e = E;
- uint h = fib_hash(f, &e->prefix);
+ struct fib_node *e = fib_user_to_node(f, E);
+ uint h = fib_hash(f, e->addr);
struct fib_node **ee = f->hash_table + h;
struct fib_iterator *it;
@@ -343,7 +416,12 @@ fib_delete(struct fib *f, void *E)
}
fib_merge_readers(it, l);
}
- sl_free(f->fib_slab, e);
+
+ if (f->fib_slab)
+ sl_free(f->fib_slab, E);
+ else
+ mb_free(E);
+
if (f->entries-- < f->entries_min)
fib_rehash(f, -HASH_LO_STEP);
return;
@@ -413,7 +491,7 @@ fit_get(struct fib *f, struct fib_iterator *i)
if (k = i->next)
k->prev = j;
j->next = k;
- i->hash = fib_hash(f, &n->prefix);
+ i->hash = fib_hash(f, n->addr);
return n;
}
@@ -461,6 +539,7 @@ found:
void
fib_check(struct fib *f)
{
+#if 0
uint i, ec, lo, nulls;
ec = 0;
@@ -496,8 +575,32 @@ fib_check(struct fib *f)
}
if (ec != f->entries)
bug("fib_check: invalid entry count (%d != %d)", ec, f->entries);
+#endif
+ return;
}
+/*
+int
+fib_histogram(struct fib *f)
+{
+ log(L_WARN "Histogram dump start %d %d", f->hash_size, f->entries);
+
+ int i, j;
+ struct fib_node *e;
+
+ for (i = 0; i < f->hash_size; i++)
+ {
+ j = 0;
+ for (e = f->hash_table[i]; e != NULL; e = e->next)
+ j++;
+ if (j > 0)
+ log(L_WARN "Histogram line %d: %d", i, j);
+ }
+
+ log(L_WARN "Histogram dump end");
+}
+*/
+
#endif
#ifdef TEST
@@ -517,7 +620,7 @@ void dump(char *m)
struct fib_iterator *j;
for(n=f.hash_table[i]; n; n=n->next)
{
- debug("%04x %04x %p %I/%2d", i, ipa_hash(n->prefix), n, n->prefix, n->pxlen);
+ debug("%04x %08x %p %N", i, ipa_hash(n->prefix), n, n->addr);
for(j=n->readers; j; j=j->next)
debug(" %p[%p]", j, j->node);
debug("\n");
diff --git a/nest/rt-roa.c b/nest/rt-roa.c
deleted file mode 100644
index 0fd89667..00000000
--- a/nest/rt-roa.c
+++ /dev/null
@@ -1,440 +0,0 @@
-/*
- * BIRD -- Route Origin Authorization
- *
- *
- * Can be freely distributed and used under the terms of the GNU GPL.
- */
-
-#undef LOCAL_DEBUG
-
-#include "nest/bird.h"
-#include "nest/route.h"
-#include "nest/cli.h"
-#include "lib/lists.h"
-#include "lib/resource.h"
-#include "lib/event.h"
-#include "lib/string.h"
-#include "conf/conf.h"
-
-
-pool *roa_pool;
-static slab *roa_slab; /* Slab of struct roa_item */
-static list roa_table_list; /* List of struct roa_table */
-struct roa_table *roa_table_default; /* The first ROA table in the config */
-
-static inline int
-src_match(struct roa_item *it, byte src)
-{ return !src || it->src == src; }
-
-/**
- * roa_add_item - add a ROA entry
- * @t: ROA table
- * @prefix: prefix of the ROA entry
- * @pxlen: prefix length of the ROA entry
- * @maxlen: max length field of the ROA entry
- * @asn: AS number field of the ROA entry
- * @src: source of the ROA entry (ROA_SRC_*)
- *
- * The function adds a new ROA entry to the ROA table. If the same ROA
- * is already in the table, nothing is added. @src field is used to
- * distinguish different sources of ROAs.
- */
-void
-roa_add_item(struct roa_table *t, ip_addr prefix, byte pxlen, byte maxlen, u32 asn, byte src)
-{
- struct roa_node *n = fib_get(&t->fib, &prefix, pxlen);
-
- // if ((n->items == NULL) && (n->n.x0 != ROA_INVALID))
- // t->cached_items--;
-
- struct roa_item *it;
- for (it = n->items; it; it = it->next)
- if ((it->maxlen == maxlen) && (it->asn == asn) && src_match(it, src))
- return;
-
- it = sl_alloc(roa_slab);
- it->asn = asn;
- it->maxlen = maxlen;
- it->src = src;
- it->next = n->items;
- n->items = it;
-}
-
-/**
- * roa_delete_item - delete a ROA entry
- * @t: ROA table
- * @prefix: prefix of the ROA entry
- * @pxlen: prefix length of the ROA entry
- * @maxlen: max length field of the ROA entry
- * @asn: AS number field of the ROA entry
- * @src: source of the ROA entry (ROA_SRC_*)
- *
- * The function removes a specified ROA entry from the ROA table and
- * frees it. If @src field is not ROA_SRC_ANY, only entries from
- * that source are considered.
- */
-void
-roa_delete_item(struct roa_table *t, ip_addr prefix, byte pxlen, byte maxlen, u32 asn, byte src)
-{
- struct roa_node *n = fib_find(&t->fib, &prefix, pxlen);
-
- if (!n)
- return;
-
- struct roa_item *it, **itp;
- for (itp = &n->items; it = *itp; itp = &it->next)
- if ((it->maxlen == maxlen) && (it->asn == asn) && src_match(it, src))
- break;
-
- if (!it)
- return;
-
- *itp = it->next;
- sl_free(roa_slab, it);
-
- // if ((n->items == NULL) && (n->n.x0 != ROA_INVALID))
- // t->cached_items++;
-}
-
-
-/**
- * roa_flush - flush a ROA table
- * @t: ROA table
- * @src: source of ROA entries (ROA_SRC_*)
- *
- * The function removes and frees ROA entries from the ROA table. If
- * @src is ROA_SRC_ANY, all entries in the table are removed,
- * otherwise only all entries from that source are removed.
- */
-void
-roa_flush(struct roa_table *t, byte src)
-{
- struct roa_item *it, **itp;
- struct roa_node *n;
-
- FIB_WALK(&t->fib, fn)
- {
- n = (struct roa_node *) fn;
-
- itp = &n->items;
- while (it = *itp)
- if (src_match(it, src))
- {
- *itp = it->next;
- sl_free(roa_slab, it);
- }
- else
- itp = &it->next;
- }
- FIB_WALK_END;
-
- // TODO add cleanup of roa_nodes
-}
-
-
-
-/*
-byte
-roa_check(struct roa_table *t, ip_addr prefix, byte pxlen, u32 asn)
-{
- struct roa_node *n = fib_find(&t->fib, &prefix, pxlen);
-
- if (n && n->n.x0 == ROA_UNKNOWN)
- return ROA_UNKNOWN;
-
- if (n && n->n.x0 == ROA_VALID && asn == n->cached_asn)
- return ROA_VALID;
-
- byte rv = roa_match(t, n, prefix, pxlen, asn);
-
- if (rv != ROA_INVALID)
- {
- if (!n)
- {
- if (t->cached_items >= t->cached_items_max)
- n = fib_get(&t->fib, &prefix, pxlen);
- t->cached_items++;
- }
-
- n->cached_asn = asn;
- n->n.x0 = rv;
- }
-
- return rv;
-}
-*/
-
-/**
- * roa_check - check validity of route origination in a ROA table
- * @t: ROA table
- * @prefix: network prefix to check
- * @pxlen: length of network prefix
- * @asn: AS number of network prefix
- *
- * Implements RFC 6483 route validation for the given network
- * prefix. The procedure is to find all candidate ROAs - ROAs whose
- * prefixes cover the give network prefix. If there is no candidate
- * ROA, return ROA_UNKNOWN. If there is a candidate ROA with matching
- * ASN and maxlen field greater than or equal to the given prefix
- * length, return ROA_VALID. Otherwise return ROA_INVALID. If caller
- * cannot determine origin AS, 0 could be used (in that case ROA_VALID
- * cannot happen).
- */
-byte
-roa_check(struct roa_table *t, ip_addr prefix, byte pxlen, u32 asn)
-{
- struct roa_node *n;
- ip_addr px;
- byte anything = 0;
-
- int len;
- for (len = pxlen; len >= 0; len--)
- {
- px = ipa_and(prefix, ipa_mkmask(len));
- n = fib_find(&t->fib, &px, len);
-
- if (!n)
- continue;
-
- struct roa_item *it;
- for (it = n->items; it; it = it->next)
- {
- anything = 1;
- if ((it->maxlen >= pxlen) && (it->asn == asn) && asn)
- return ROA_VALID;
- }
- }
-
- return anything ? ROA_INVALID : ROA_UNKNOWN;
-}
-
-static void
-roa_node_init(struct fib_node *fn)
-{
- struct roa_node *n = (struct roa_node *) fn;
- n->items = NULL;
-}
-
-static inline void
-roa_populate(struct roa_table *t)
-{
- struct roa_item_config *ric;
- for (ric = t->cf->roa_items; ric; ric = ric->next)
- roa_add_item(t, ric->prefix, ric->pxlen, ric->maxlen, ric->asn, ROA_SRC_CONFIG);
-}
-
-static void
-roa_new_table(struct roa_table_config *cf)
-{
- struct roa_table *t;
-
- t = mb_allocz(roa_pool, sizeof(struct roa_table));
- fib_init(&t->fib, roa_pool, sizeof(struct roa_node), 0, roa_node_init);
- t->name = cf->name;
- t->cf = cf;
-
- cf->table = t;
- add_tail(&roa_table_list, &t->n);
-
- roa_populate(t);
-}
-
-struct roa_table_config *
-roa_new_table_config(struct symbol *s)
-{
- struct roa_table_config *rtc = cfg_allocz(sizeof(struct roa_table_config));
-
- cf_define_symbol(s, SYM_ROA, rtc);
- rtc->name = s->name;
- add_tail(&new_config->roa_tables, &rtc->n);
- return rtc;
-}
-
-/**
- * roa_add_item_config - add a static ROA entry to a ROA table configuration
- *
- * Arguments are self-explanatory. The first is the ROA table config, rest
- * are specifying the ROA entry.
- */
-void
-roa_add_item_config(struct roa_table_config *rtc, ip_addr prefix, byte pxlen, byte maxlen, u32 asn)
-{
- struct roa_item_config *ric = cfg_allocz(sizeof(struct roa_item_config));
-
- ric->prefix = prefix;
- ric->pxlen = pxlen;
- ric->maxlen = maxlen;
- ric->asn = asn;
- ric->next = rtc->roa_items;
- rtc->roa_items = ric;
-}
-
-/**
- * roa_init - initialize ROA tables
- *
- * This function is called during BIRD startup. It initializes
- * the ROA table module.
- */
-void
-roa_init(void)
-{
- roa_pool = rp_new(&root_pool, "ROA tables");
- roa_slab = sl_new(roa_pool, sizeof(struct roa_item));
- init_list(&roa_table_list);
-}
-
-void
-roa_preconfig(struct config *c)
-{
- init_list(&c->roa_tables);
-}
-
-
-/**
- * roa_commit - commit new ROA table configuration
- * @new: new configuration
- * @old: original configuration or %NULL if it's boot time config
- *
- * Scan differences between @old and @new configuration and modify the
- * ROA tables according to these changes. If @new defines a previously
- * unknown table, create it, if it omits a table existing in @old,
- * delete it (there are no references, only indirect through struct
- * roa_table_config). If it exists in both configurations, update the
- * configured ROA entries.
- */
-void
-roa_commit(struct config *new, struct config *old)
-{
- struct roa_table_config *cf;
- struct roa_table *t;
-
- if (old)
- WALK_LIST(t, roa_table_list)
- {
- struct symbol *sym = cf_find_symbol(new, t->name);
- if (sym && sym->class == SYM_ROA)
- {
- /* Found old table in new config */
- cf = sym->def;
- cf->table = t;
- t->name = cf->name;
- t->cf = cf;
-
- /* Reconfigure it */
- roa_flush(t, ROA_SRC_CONFIG);
- roa_populate(t);
- }
- else
- {
- t->cf->table = NULL;
-
- /* Free it now */
- roa_flush(t, ROA_SRC_ANY);
- rem_node(&t->n);
- fib_free(&t->fib);
- mb_free(t);
- }
- }
-
- /* Add new tables */
- WALK_LIST(cf, new->roa_tables)
- if (! cf->table)
- roa_new_table(cf);
-
- roa_table_default = EMPTY_LIST(new->roa_tables) ? NULL :
- ((struct roa_table_config *) HEAD(new->roa_tables))->table;
-}
-
-
-
-static void
-roa_show_node(struct cli *c, struct roa_node *rn, int len, u32 asn)
-{
- struct roa_item *ri;
-
- for (ri = rn->items; ri; ri = ri->next)
- if ((ri->maxlen >= len) && (!asn || (ri->asn == asn)))
- cli_printf(c, -1019, "%I/%d max %d as %u", rn->n.prefix, rn->n.pxlen, ri->maxlen, ri->asn);
-}
-
-static void
-roa_show_cont(struct cli *c)
-{
- struct roa_show_data *d = c->rover;
- struct fib *fib = &d->table->fib;
- struct fib_iterator *it = &d->fit;
- struct roa_node *rn;
- unsigned max = 32;
-
- FIB_ITERATE_START(fib, it, f)
- {
- rn = (struct roa_node *) f;
-
- if (!max--)
- {
- FIB_ITERATE_PUT(it, f);
- return;
- }
-
- if ((d->mode == ROA_SHOW_ALL) ||
- net_in_net(rn->n.prefix, rn->n.pxlen, d->prefix, d->pxlen))
- roa_show_node(c, rn, 0, d->asn);
- }
- FIB_ITERATE_END(f);
-
- cli_printf(c, 0, "");
- c->cont = c->cleanup = NULL;
-}
-
-static void
-roa_show_cleanup(struct cli *c)
-{
- struct roa_show_data *d = c->rover;
-
- /* Unlink the iterator */
- fit_get(&d->table->fib, &d->fit);
-}
-
-void
-roa_show(struct roa_show_data *d)
-{
- struct roa_node *rn;
- ip_addr px;
- int len;
-
- switch (d->mode)
- {
- case ROA_SHOW_ALL:
- case ROA_SHOW_IN:
- FIB_ITERATE_INIT(&d->fit, &d->table->fib);
- this_cli->cont = roa_show_cont;
- this_cli->cleanup = roa_show_cleanup;
- this_cli->rover = d;
- break;
-
- case ROA_SHOW_PX:
- rn = fib_find(&d->table->fib, &d->prefix, d->pxlen);
- if (rn)
- {
- roa_show_node(this_cli, rn, 0, d->asn);
- cli_msg(0, "");
- }
- else
- cli_msg(-8001, "Network not in table");
- break;
-
- case ROA_SHOW_FOR:
- for (len = d->pxlen; len >= 0; len--)
- {
- px = ipa_and(d->prefix, ipa_mkmask(len));
- rn = fib_find(&d->table->fib, &px, len);
-
- if (!rn)
- continue;
-
- roa_show_node(this_cli, rn, 0, d->asn);
- }
- cli_msg(0, "");
- break;
- }
-}
diff --git a/nest/rt-table.c b/nest/rt-table.c
index c02e6dc9..9e9d4c7a 100644
--- a/nest/rt-table.c
+++ b/nest/rt-table.c
@@ -55,9 +55,7 @@ static void rt_free_hostcache(rtable *tab);
static void rt_notify_hostcache(rtable *tab, net *net);
static void rt_update_hostcache(rtable *tab);
static void rt_next_hop_update(rtable *tab);
-static inline int rt_prune_table(rtable *tab);
-static inline void rt_schedule_gc(rtable *tab);
-static inline void rt_schedule_prune(rtable *tab);
+static inline void rt_prune_table(rtable *tab);
static inline struct ea_list *
@@ -68,31 +66,152 @@ make_tmp_attrs(struct rte *rt, struct linpool *pool)
return mta ? mta(rt, rte_update_pool) : NULL;
}
+
/* Like fib_route(), but skips empty net entries */
-static net *
-net_route(rtable *tab, ip_addr a, int len)
+static inline void *
+net_route_ip4(struct fib *f, net_addr_ip4 *n)
{
- ip_addr a0;
- net *n;
+ net *r;
+
+ while (r = fib_find(f, (net_addr *) n),
+ !(r && rte_is_valid(r->routes)) && (n->pxlen > 0))
+ {
+ n->pxlen--;
+ ip4_clrbit(&n->prefix, n->pxlen);
+ }
+
+ return r;
+}
- while (len >= 0)
+static inline void *
+net_route_ip6(struct fib *f, net_addr_ip6 *n)
+{
+ net *r;
+
+ while (r = fib_find(f, (net_addr *) n),
+ !(r && rte_is_valid(r->routes)) && (n->pxlen > 0))
+ {
+ n->pxlen--;
+ ip6_clrbit(&n->prefix, n->pxlen);
+ }
+
+ return r;
+}
+
+void *
+net_route(rtable *tab, const net_addr *n)
+{
+ ASSERT(tab->addr_type == n->type);
+
+ net_addr *n0 = alloca(n->length);
+ net_copy(n0, n);
+
+ switch (n->type)
+ {
+ case NET_IP4:
+ case NET_VPN4:
+ case NET_ROA4:
+ return net_route_ip4(&tab->fib, (net_addr_ip4 *) n0);
+
+ case NET_IP6:
+ case NET_VPN6:
+ case NET_ROA6:
+ return net_route_ip6(&tab->fib, (net_addr_ip6 *) n0);
+
+ default:
+ return NULL;
+ }
+}
+
+
+static int
+net_roa_check_ip4(rtable *tab, const net_addr_ip4 *px, u32 asn)
+{
+ struct net_addr_roa4 n = NET_ADDR_ROA4(px->prefix, px->pxlen, 0, 0);
+ struct fib_node *fn;
+ int anything = 0;
+
+ while (1)
+ {
+ for (fn = fib_get_chain(&tab->fib, (net_addr *) &n); fn; fn = fn->next)
{
- a0 = ipa_and(a, ipa_mkmask(len));
- n = fib_find(&tab->fib, &a0, len);
- if (n && rte_is_valid(n->routes))
- return n;
- len--;
+ net_addr_roa4 *roa = (void *) fn->addr;
+ net *r = fib_node_to_user(&tab->fib, fn);
+
+ if (net_equal_prefix_roa4(roa, &n) && rte_is_valid(r->routes))
+ {
+ anything = 1;
+ if (asn && (roa->asn == asn) && (roa->max_pxlen >= px->pxlen))
+ return ROA_VALID;
+ }
}
- return NULL;
+
+ if (n.pxlen == 0)
+ break;
+
+ n.pxlen--;
+ ip4_clrbit(&n.prefix, n.pxlen);
+ }
+
+ return anything ? ROA_INVALID : ROA_UNKNOWN;
}
-static void
-rte_init(struct fib_node *N)
+static int
+net_roa_check_ip6(rtable *tab, const net_addr_ip6 *px, u32 asn)
{
- net *n = (net *) N;
+ struct net_addr_roa6 n = NET_ADDR_ROA6(px->prefix, px->pxlen, 0, 0);
+ struct fib_node *fn;
+ int anything = 0;
- N->flags = 0;
- n->routes = NULL;
+ while (1)
+ {
+ for (fn = fib_get_chain(&tab->fib, (net_addr *) &n); fn; fn = fn->next)
+ {
+ net_addr_roa6 *roa = (void *) fn->addr;
+ net *r = fib_node_to_user(&tab->fib, fn);
+
+ if (net_equal_prefix_roa6(roa, &n) && rte_is_valid(r->routes))
+ {
+ anything = 1;
+ if (asn && (roa->asn == asn) && (roa->max_pxlen >= px->pxlen))
+ return ROA_VALID;
+ }
+ }
+
+ if (n.pxlen == 0)
+ break;
+
+ n.pxlen--;
+ ip6_clrbit(&n.prefix, n.pxlen);
+ }
+
+ return anything ? ROA_INVALID : ROA_UNKNOWN;
+}
+
+/**
+ * roa_check - check validity of route origination in a ROA table
+ * @tab: ROA table
+ * @n: network prefix to check
+ * @asn: AS number of network prefix
+ *
+ * Implements RFC 6483 route validation for the given network prefix. The
+ * procedure is to find all candidate ROAs - ROAs whose prefixes cover the given
+ * network prefix. If there is no candidate ROA, return ROA_UNKNOWN. If there is
+ * a candidate ROA with matching ASN and maxlen field greater than or equal to
+ * the given prefix length, return ROA_VALID. Otherwise, return ROA_INVALID. If
+ * caller cannot determine origin AS, 0 could be used (in that case ROA_VALID
+ * cannot happen). Table @tab must have type NET_ROA4 or NET_ROA6, network @n
+ * must have type NET_IP4 or NET_IP6, respectively.
+ */
+int
+net_roa_check(rtable *tab, const net_addr *n, u32 asn)
+{
+ if ((tab->addr_type == NET_ROA4) && (n->type == NET_IP4))
+ return net_roa_check_ip4(tab, (const net_addr_ip4 *) n, asn);
+ else if ((tab->addr_type == NET_ROA6) && (n->type == NET_IP6))
+ return net_roa_check_ip6(tab, (const net_addr_ip6 *) n, asn);
+ else
+ return ROA_UNKNOWN; /* Should not happen */
}
/**
@@ -129,7 +248,7 @@ rte_get_temp(rta *a)
e->attrs = a;
e->flags = 0;
- e->pref = a->src->proto->preference;
+ e->pref = 0;
return e;
}
@@ -227,10 +346,10 @@ rte_mergable(rte *pri, rte *sec)
static void
rte_trace(struct proto *p, rte *e, int dir, char *msg)
{
- byte via[STD_ADDRESS_P_LENGTH+32];
+ byte via[IPA_MAX_TEXT_LENGTH+32];
rt_format_via(e, via);
- log(L_TRACE "%s %c %s %I/%d %s", p->name, dir, msg, e->net->n.prefix, e->net->n.pxlen, via);
+ log(L_TRACE "%s %c %s %N %s", p->name, dir, msg, e->net->n.addr, via);
}
static inline void
@@ -248,11 +367,11 @@ rte_trace_out(uint flag, struct proto *p, rte *e, char *msg)
}
static rte *
-export_filter(struct announce_hook *ah, rte *rt0, rte **rt_free, ea_list **tmpa, int silent)
+export_filter(struct channel *c, rte *rt0, rte **rt_free, ea_list **tmpa, int silent)
{
- struct proto *p = ah->proto;
- struct filter *filter = ah->out_filter;
- struct proto_stats *stats = ah->stats;
+ struct proto *p = c->proto;
+ struct filter *filter = c->out_filter;
+ struct proto_stats *stats = &c->stats;
ea_list *tmpb = NULL;
rte *rt;
int v;
@@ -308,10 +427,10 @@ export_filter(struct announce_hook *ah, rte *rt0, rte **rt_free, ea_list **tmpa,
}
static void
-do_rt_notify(struct announce_hook *ah, net *net, rte *new, rte *old, ea_list *tmpa, int refeed)
+do_rt_notify(struct channel *c, net *net, rte *new, rte *old, ea_list *tmpa, int refeed)
{
- struct proto *p = ah->proto;
- struct proto_stats *stats = ah->stats;
+ struct proto *p = c->proto;
+ struct proto_stats *stats = &c->stats;
/*
@@ -341,11 +460,11 @@ do_rt_notify(struct announce_hook *ah, net *net, rte *new, rte *old, ea_list *tm
* also non-new updates (contrary to import blocking).
*/
- struct proto_limit *l = ah->out_limit;
- if (l && new)
+ struct channel_limit *l = &c->out_limit;
+ if (l->action && new)
{
if ((!old || refeed) && (stats->exp_routes >= l->limit))
- proto_notify_limit(ah, l, PLD_OUT, stats->exp_routes);
+ channel_notify_limit(c, l, PLD_OUT, stats->exp_routes);
if (l->state == PLS_BLOCKED)
{
@@ -382,25 +501,24 @@ do_rt_notify(struct announce_hook *ah, net *net, rte *new, rte *old, ea_list *tm
rte_trace_out(D_ROUTES, p, old, "removed");
}
if (!new)
- p->rt_notify(p, ah->table, net, NULL, old, NULL);
+ p->rt_notify(p, c, net, NULL, old, NULL);
else if (tmpa)
{
ea_list *t = tmpa;
while (t->next)
t = t->next;
t->next = new->attrs->eattrs;
- p->rt_notify(p, ah->table, net, new, old, tmpa);
+ p->rt_notify(p, c, net, new, old, tmpa);
t->next = NULL;
}
else
- p->rt_notify(p, ah->table, net, new, old, new->attrs->eattrs);
+ p->rt_notify(p, c, net, new, old, new->attrs->eattrs);
}
static void
-rt_notify_basic(struct announce_hook *ah, net *net, rte *new0, rte *old0, int refeed)
+rt_notify_basic(struct channel *c, net *net, rte *new0, rte *old0, int refeed)
{
- struct proto *p = ah->proto;
- struct proto_stats *stats = ah->stats;
+ struct proto *p = c->proto;
rte *new = new0;
rte *old = old0;
@@ -409,9 +527,9 @@ rt_notify_basic(struct announce_hook *ah, net *net, rte *new0, rte *old0, int re
ea_list *tmpa = NULL;
if (new)
- stats->exp_updates_received++;
+ c->stats.exp_updates_received++;
else
- stats->exp_withdraws_received++;
+ c->stats.exp_withdraws_received++;
/*
* This is a tricky part - we don't know whether route 'old' was
@@ -434,10 +552,10 @@ rt_notify_basic(struct announce_hook *ah, net *net, rte *new0, rte *old0, int re
*/
if (new)
- new = export_filter(ah, new, &new_free, &tmpa, 0);
+ new = export_filter(c, new, &new_free, &tmpa, 0);
if (old && !refeed)
- old = export_filter(ah, old, &old_free, NULL, 1);
+ old = export_filter(c, old, &old_free, NULL, 1);
if (!new && !old)
{
@@ -454,13 +572,13 @@ rt_notify_basic(struct announce_hook *ah, net *net, rte *new0, rte *old0, int re
#ifdef CONFIG_PIPE
if ((p->proto == &proto_pipe) && !new0 && (p != old0->sender->proto))
- p->rt_notify(p, ah->table, net, NULL, old0, NULL);
+ p->rt_notify(p, c, net, NULL, old0, NULL);
#endif
return;
}
- do_rt_notify(ah, net, new, old, tmpa, refeed);
+ do_rt_notify(c, net, new, old, tmpa, refeed);
/* Discard temporary rte's */
if (new_free)
@@ -470,10 +588,9 @@ rt_notify_basic(struct announce_hook *ah, net *net, rte *new0, rte *old0, int re
}
static void
-rt_notify_accepted(struct announce_hook *ah, net *net, rte *new_changed, rte *old_changed, rte *before_old, int feed)
+rt_notify_accepted(struct channel *c, net *net, rte *new_changed, rte *old_changed, rte *before_old, int feed)
{
- // struct proto *p = ah->proto;
- struct proto_stats *stats = ah->stats;
+ // struct proto *p = c->proto;
rte *r;
rte *new_best = NULL;
@@ -491,14 +608,14 @@ rt_notify_accepted(struct announce_hook *ah, net *net, rte *new_changed, rte *ol
was not valid, caller must use NULL for both old_changed and before_old. */
if (new_changed)
- stats->exp_updates_received++;
+ c->stats.exp_updates_received++;
else
- stats->exp_withdraws_received++;
+ c->stats.exp_withdraws_received++;
/* First, find the new_best route - first accepted by filters */
for (r=net->routes; rte_is_valid(r); r=r->next)
{
- if (new_best = export_filter(ah, r, &new_free, &tmpa, 0))
+ if (new_best = export_filter(c, r, &new_free, &tmpa, 0))
break;
/* Note if we walked around the position of old_changed route */
@@ -549,7 +666,7 @@ rt_notify_accepted(struct announce_hook *ah, net *net, rte *new_changed, rte *ol
/* First case */
if (old_meet)
- if (old_best = export_filter(ah, old_changed, &old_free, NULL, 1))
+ if (old_best = export_filter(c, old_changed, &old_free, NULL, 1))
goto found;
/* Second case */
@@ -567,18 +684,18 @@ rt_notify_accepted(struct announce_hook *ah, net *net, rte *new_changed, rte *ol
/* Fourth case */
for (r=r->next; rte_is_valid(r); r=r->next)
{
- if (old_best = export_filter(ah, r, &old_free, NULL, 1))
+ if (old_best = export_filter(c, r, &old_free, NULL, 1))
goto found;
if (r == before_old)
- if (old_best = export_filter(ah, old_changed, &old_free, NULL, 1))
+ if (old_best = export_filter(c, old_changed, &old_free, NULL, 1))
goto found;
}
/* Implicitly, old_best is NULL and new_best is non-NULL */
found:
- do_rt_notify(ah, net, new_best, old_best, tmpa, (feed == 2));
+ do_rt_notify(c, net, new_best, old_best, tmpa, (feed == 2));
/* Discard temporary rte's */
if (new_free)
@@ -597,9 +714,9 @@ mpnh_merge_rta(struct mpnh *nhs, rta *a, int max)
}
rte *
-rt_export_merged(struct announce_hook *ah, net *net, rte **rt_free, ea_list **tmpa, int silent)
+rt_export_merged(struct channel *c, net *net, rte **rt_free, ea_list **tmpa, int silent)
{
- // struct proto *p = ah->proto;
+ // struct proto *p = c->proto;
struct mpnh *nhs = NULL;
rte *best0, *best, *rt0, *rt, *tmp;
@@ -609,7 +726,7 @@ rt_export_merged(struct announce_hook *ah, net *net, rte **rt_free, ea_list **tm
if (!rte_is_valid(best0))
return NULL;
- best = export_filter(ah, best0, rt_free, tmpa, silent);
+ best = export_filter(c, best0, rt_free, tmpa, silent);
if (!best || !rte_is_reachable(best))
return best;
@@ -619,13 +736,13 @@ rt_export_merged(struct announce_hook *ah, net *net, rte **rt_free, ea_list **tm
if (!rte_mergable(best0, rt0))
continue;
- rt = export_filter(ah, rt0, &tmp, NULL, 1);
+ rt = export_filter(c, rt0, &tmp, NULL, 1);
if (!rt)
continue;
if (rte_is_reachable(rt))
- nhs = mpnh_merge_rta(nhs, rt->attrs, ah->proto->merge_limit);
+ nhs = mpnh_merge_rta(nhs, rt->attrs, c->merge_limit);
if (tmp)
rte_free(tmp);
@@ -633,7 +750,7 @@ rt_export_merged(struct announce_hook *ah, net *net, rte **rt_free, ea_list **tm
if (nhs)
{
- nhs = mpnh_merge_rta(nhs, best->attrs, ah->proto->merge_limit);
+ nhs = mpnh_merge_rta(nhs, best->attrs, c->merge_limit);
if (nhs->next)
{
@@ -651,10 +768,10 @@ rt_export_merged(struct announce_hook *ah, net *net, rte **rt_free, ea_list **tm
static void
-rt_notify_merged(struct announce_hook *ah, net *net, rte *new_changed, rte *old_changed,
+rt_notify_merged(struct channel *c, net *net, rte *new_changed, rte *old_changed,
rte *new_best, rte*old_best, int refeed)
{
- // struct proto *p = ah->proto;
+ // struct proto *p = c->proto;
rte *new_best_free = NULL;
rte *old_best_free = NULL;
@@ -672,31 +789,31 @@ rt_notify_merged(struct announce_hook *ah, net *net, rte *new_changed, rte *old_
if ((new_best == old_best) && !refeed)
{
new_changed = rte_mergable(new_best, new_changed) ?
- export_filter(ah, new_changed, &new_changed_free, NULL, 1) : NULL;
+ export_filter(c, new_changed, &new_changed_free, NULL, 1) : NULL;
old_changed = rte_mergable(old_best, old_changed) ?
- export_filter(ah, old_changed, &old_changed_free, NULL, 1) : NULL;
+ export_filter(c, old_changed, &old_changed_free, NULL, 1) : NULL;
if (!new_changed && !old_changed)
return;
}
if (new_best)
- ah->stats->exp_updates_received++;
+ c->stats.exp_updates_received++;
else
- ah->stats->exp_withdraws_received++;
+ c->stats.exp_withdraws_received++;
/* Prepare new merged route */
if (new_best)
- new_best = rt_export_merged(ah, net, &new_best_free, &tmpa, 0);
+ new_best = rt_export_merged(c, net, &new_best_free, &tmpa, 0);
/* Prepare old merged route (without proper merged next hops) */
/* There are some issues with running filter on old route - see rt_notify_basic() */
if (old_best && !refeed)
- old_best = export_filter(ah, old_best, &old_best_free, NULL, 1);
+ old_best = export_filter(c, old_best, &old_best_free, NULL, 1);
if (new_best || old_best)
- do_rt_notify(ah, net, new_best, old_best, tmpa, refeed);
+ do_rt_notify(c, net, new_best, old_best, tmpa, refeed);
/* Discard temporary rte's */
if (new_best_free)
@@ -761,28 +878,22 @@ rte_announce(rtable *tab, unsigned type, net *net, rte *new, rte *old,
if (!old && !new)
return;
- if (type == RA_OPTIMAL)
- {
- if (new)
- new->attrs->src->proto->stats.pref_routes++;
- if (old)
- old->attrs->src->proto->stats.pref_routes--;
-
- if (tab->hostcache)
- rt_notify_hostcache(tab, net);
- }
+ if ((type == RA_OPTIMAL) && tab->hostcache)
+ rt_notify_hostcache(tab, net);
- struct announce_hook *a;
- WALK_LIST(a, tab->hooks)
+ struct channel *c; node *n;
+ WALK_LIST2(c, n, tab->channels, table_node)
{
- ASSERT(a->proto->export_state != ES_DOWN);
- if (a->proto->accept_ra_types == type)
+ if (c->export_state == ES_DOWN)
+ continue;
+
+ if (c->ra_mode == type)
if (type == RA_ACCEPTED)
- rt_notify_accepted(a, net, new, old, before_old, 0);
+ rt_notify_accepted(c, net, new, old, before_old, 0);
else if (type == RA_MERGED)
- rt_notify_merged(a, net, new, old, new_best, old_best, 0);
+ rt_notify_merged(c, net, new, old, new_best, old_best, 0);
else
- rt_notify_basic(a, net, new, old, 0);
+ rt_notify_basic(c, net, new, old, 0);
}
}
@@ -792,20 +903,21 @@ rte_validate(rte *e)
int c;
net *n = e->net;
- if ((n->n.pxlen > BITS_PER_IP_ADDRESS) || !ip_is_prefix(n->n.prefix,n->n.pxlen))
- {
- log(L_WARN "Ignoring bogus prefix %I/%d received via %s",
- n->n.prefix, n->n.pxlen, e->sender->proto->name);
- return 0;
- }
+ // (n->n.pxlen > BITS_PER_IP_ADDRESS) || !ip_is_prefix(n->n.prefix,n->n.pxlen))
+ if (!net_validate(n->n.addr))
+ {
+ log(L_WARN "Ignoring bogus prefix %N received via %s",
+ n->n.addr, e->sender->proto->name);
+ return 0;
+ }
- c = ipa_classify_net(n->n.prefix);
+ c = net_classify(n->n.addr);
if ((c < 0) || !(c & IADDR_HOST) || ((c & IADDR_SCOPE_MASK) <= SCOPE_LINK))
- {
- log(L_WARN "Ignoring bogus route %I/%d received via %s",
- n->n.prefix, n->n.pxlen, e->sender->proto->name);
- return 0;
- }
+ {
+ log(L_WARN "Ignoring bogus route %N received via %s",
+ n->n.addr, e->sender->proto->name);
+ return 0;
+ }
return 1;
}
@@ -845,11 +957,11 @@ rte_same(rte *x, rte *y)
static inline int rte_is_ok(rte *e) { return e && !rte_is_filtered(e); }
static void
-rte_recalculate(struct announce_hook *ah, net *net, rte *new, struct rte_src *src)
+rte_recalculate(struct channel *c, net *net, rte *new, struct rte_src *src)
{
- struct proto *p = ah->proto;
- struct rtable *table = ah->table;
- struct proto_stats *stats = ah->stats;
+ struct proto *p = c->proto;
+ struct rtable *table = c->table;
+ struct proto_stats *stats = &c->stats;
static struct tbf rl_pipe = TBF_DEFAULT_LOG_LIMITS;
rte *before_old = NULL;
rte *old_best = net->routes;
@@ -874,8 +986,8 @@ rte_recalculate(struct announce_hook *ah, net *net, rte *new, struct rte_src *sr
{
if (new)
{
- log_rl(&rl_pipe, L_ERR "Pipe collision detected when sending %I/%d to table %s",
- net->n.prefix, net->n.pxlen, table->name);
+ log_rl(&rl_pipe, L_ERR "Pipe collision detected when sending %N to table %s",
+ net->n.addr, table->name);
rte_free_quick(new);
}
return;
@@ -913,13 +1025,13 @@ rte_recalculate(struct announce_hook *ah, net *net, rte *new, struct rte_src *sr
int new_ok = rte_is_ok(new);
int old_ok = rte_is_ok(old);
- struct proto_limit *l = ah->rx_limit;
- if (l && !old && new)
+ struct channel_limit *l = &c->rx_limit;
+ if (l->action && !old && new)
{
u32 all_routes = stats->imp_routes + stats->filt_routes;
if (all_routes >= l->limit)
- proto_notify_limit(ah, l, PLD_RX, all_routes);
+ channel_notify_limit(c, l, PLD_RX, all_routes);
if (l->state == PLS_BLOCKED)
{
@@ -933,11 +1045,11 @@ rte_recalculate(struct announce_hook *ah, net *net, rte *new, struct rte_src *sr
}
}
- l = ah->in_limit;
- if (l && !old_ok && new_ok)
+ l = &c->in_limit;
+ if (l->action && !old_ok && new_ok)
{
if (stats->imp_routes >= l->limit)
- proto_notify_limit(ah, l, PLD_IN, stats->imp_routes);
+ channel_notify_limit(c, l, PLD_IN, stats->imp_routes);
if (l->state == PLS_BLOCKED)
{
@@ -951,13 +1063,13 @@ rte_recalculate(struct announce_hook *ah, net *net, rte *new, struct rte_src *sr
stats->imp_updates_ignored++;
rte_trace_in(D_FILTERS, p, new, "ignored [limit]");
- if (ah->in_keep_filtered)
+ if (c->in_keep_filtered)
new->flags |= REF_FILTERED;
else
{ rte_free_quick(new); new = NULL; }
/* Note that old && !new could be possible when
- ah->in_keep_filtered changed in the recent past. */
+ c->in_keep_filtered changed in the recent past. */
if (!old && !new)
return;
@@ -1090,7 +1202,7 @@ rte_recalculate(struct announce_hook *ah, net *net, rte *new, struct rte_src *sr
if (!net->routes &&
(table->gc_counter++ >= table->config->gc_max_ops) &&
(table->gc_time + table->config->gc_min_time <= now))
- rt_schedule_gc(table);
+ rt_schedule_prune(table);
if (old_ok && p->rte_remove)
p->rte_remove(net, old);
@@ -1139,7 +1251,7 @@ rte_unhide_dummy_routes(net *net, rte **dummy)
/**
* rte_update - enter a new update to a routing table
* @table: table to be updated
- * @ah: pointer to table announce hook
+ * @c: channel doing the update
* @net: network node
* @p: protocol submitting the update
* @src: protocol originating the update
@@ -1179,18 +1291,27 @@ rte_unhide_dummy_routes(net *net, rte **dummy)
*/
void
-rte_update2(struct announce_hook *ah, net *net, rte *new, struct rte_src *src)
+rte_update2(struct channel *c, net_addr *n, rte *new, struct rte_src *src)
{
- struct proto *p = ah->proto;
- struct proto_stats *stats = ah->stats;
- struct filter *filter = ah->in_filter;
+ struct proto *p = c->proto;
+ struct proto_stats *stats = &c->stats;
+ struct filter *filter = c->in_filter;
ea_list *tmpa = NULL;
rte *dummy = NULL;
+ net *nn;
+
+ ASSERT(c->channel_state == CS_UP);
rte_update_lock();
if (new)
{
- new->sender = ah;
+ nn = net_get(c->table, n);
+
+ new->net = nn;
+ new->sender = c;
+
+ if (!new->pref)
+ new->pref = c->preference;
stats->imp_updates_received++;
if (!rte_validate(new))
@@ -1205,7 +1326,7 @@ rte_update2(struct announce_hook *ah, net *net, rte *new, struct rte_src *src)
stats->imp_updates_filtered++;
rte_trace_in(D_FILTERS, p, new, "filtered out");
- if (! ah->in_keep_filtered)
+ if (! c->in_keep_filtered)
goto drop;
/* new is a private copy, i could modify it */
@@ -1223,7 +1344,7 @@ rte_update2(struct announce_hook *ah, net *net, rte *new, struct rte_src *src)
stats->imp_updates_filtered++;
rte_trace_in(D_FILTERS, p, new, "filtered out");
- if (! ah->in_keep_filtered)
+ if (! c->in_keep_filtered)
goto drop;
new->flags |= REF_FILTERED;
@@ -1240,7 +1361,7 @@ rte_update2(struct announce_hook *ah, net *net, rte *new, struct rte_src *src)
{
stats->imp_withdraws_received++;
- if (!net || !src)
+ if (!(nn = net_find(c->table, n)) || !src)
{
stats->imp_withdraws_ignored++;
rte_update_unlock();
@@ -1249,9 +1370,9 @@ rte_update2(struct announce_hook *ah, net *net, rte *new, struct rte_src *src)
}
recalc:
- rte_hide_dummy_routes(net, &dummy);
- rte_recalculate(ah, net, new, src);
- rte_unhide_dummy_routes(net, &dummy);
+ rte_hide_dummy_routes(nn, &dummy);
+ rte_recalculate(c, nn, new, src);
+ rte_unhide_dummy_routes(nn, &dummy);
rte_update_unlock();
return;
@@ -1282,9 +1403,9 @@ rte_discard(rtable *t, rte *old) /* Non-filtered route deletion, used during gar
/* Check rtable for best route to given net whether it would be exported do p */
int
-rt_examine(rtable *t, ip_addr prefix, int pxlen, struct proto *p, struct filter *filter)
+rt_examine(rtable *t, net_addr *a, struct proto *p, struct filter *filter)
{
- net *n = net_find(t, prefix, pxlen);
+ net *n = net_find(t, a);
rte *rt = n ? n->routes : NULL;
if (!rte_is_valid(rt))
@@ -1311,28 +1432,25 @@ rt_examine(rtable *t, ip_addr prefix, int pxlen, struct proto *p, struct filter
/**
* rt_refresh_begin - start a refresh cycle
* @t: related routing table
- * @ah: related announce hook
+ * @c related channel
*
* This function starts a refresh cycle for given routing table and announce
* hook. The refresh cycle is a sequence where the protocol sends all its valid
* routes to the routing table (by rte_update()). After that, all protocol
- * routes (more precisely routes with @ah as @sender) not sent during the
+ * routes (more precisely routes with @c as @sender) not sent during the
* refresh cycle but still in the table from the past are pruned. This is
* implemented by marking all related routes as stale by REF_STALE flag in
* rt_refresh_begin(), then marking all related stale routes with REF_DISCARD
* flag in rt_refresh_end() and then removing such routes in the prune loop.
*/
void
-rt_refresh_begin(rtable *t, struct announce_hook *ah)
+rt_refresh_begin(rtable *t, struct channel *c)
{
- net *n;
- rte *e;
-
- FIB_WALK(&t->fib, fn)
+ FIB_WALK(&t->fib, net, n)
{
- n = (net *) fn;
+ rte *e;
for (e = n->routes; e; e = e->next)
- if (e->sender == ah)
+ if (e->sender == c)
e->flags |= REF_STALE;
}
FIB_WALK_END;
@@ -1341,23 +1459,21 @@ rt_refresh_begin(rtable *t, struct announce_hook *ah)
/**
* rt_refresh_end - end a refresh cycle
* @t: related routing table
- * @ah: related announce hook
+ * @c: related channel
*
- * This function starts a refresh cycle for given routing table and announce
+ * This function ends a refresh cycle for given routing table and announce
* hook. See rt_refresh_begin() for description of refresh cycles.
*/
void
-rt_refresh_end(rtable *t, struct announce_hook *ah)
+rt_refresh_end(rtable *t, struct channel *c)
{
int prune = 0;
- net *n;
- rte *e;
- FIB_WALK(&t->fib, fn)
+ FIB_WALK(&t->fib, net, n)
{
- n = (net *) fn;
+ rte *e;
for (e = n->routes; e; e = e->next)
- if ((e->sender == ah) && (e->flags & REF_STALE))
+ if ((e->sender == c) && (e->flags & REF_STALE))
{
e->flags |= REF_DISCARD;
prune = 1;
@@ -1380,7 +1496,7 @@ void
rte_dump(rte *e)
{
net *n = e->net;
- debug("%-1I/%2d ", n->n.prefix, n->n.pxlen);
+ debug("%-1N ", n->n.addr);
debug("KF=%02x PF=%02x pref=%d lm=%d ", n->n.flags, e->pflags, e->pref, now-e->lastmod);
rta_dump(e->attrs);
if (e->attrs->src->proto->proto->dump_attrs)
@@ -1397,23 +1513,17 @@ rte_dump(rte *e)
void
rt_dump(rtable *t)
{
- rte *e;
- net *n;
- struct announce_hook *a;
-
debug("Dump of routing table <%s>\n", t->name);
#ifdef DEBUGGING
fib_check(&t->fib);
#endif
- FIB_WALK(&t->fib, fn)
+ FIB_WALK(&t->fib, net, n)
{
- n = (net *) fn;
+ rte *e;
for(e=n->routes; e; e=e->next)
rte_dump(e);
}
FIB_WALK_END;
- WALK_LIST(a, t->hooks)
- debug("\tAnnounces routes to protocol %s\n", a->proto->name);
debug("\n");
}
@@ -1432,23 +1542,6 @@ rt_dump_all(void)
}
static inline void
-rt_schedule_prune(rtable *tab)
-{
- rt_mark_for_prune(tab);
- ev_schedule(tab->rt_event);
-}
-
-static inline void
-rt_schedule_gc(rtable *tab)
-{
- if (tab->gc_scheduled)
- return;
-
- tab->gc_scheduled = 1;
- ev_schedule(tab->rt_event);
-}
-
-static inline void
rt_schedule_hcu(rtable *tab)
{
if (tab->hcu_scheduled)
@@ -1468,44 +1561,24 @@ rt_schedule_nhu(rtable *tab)
tab->nhu_state |= 1;
}
-
-static void
-rt_prune_nets(rtable *tab)
+void
+rt_schedule_prune(rtable *tab)
{
- struct fib_iterator fit;
- int ncnt = 0, ndel = 0;
-
-#ifdef DEBUGGING
- fib_check(&tab->fib);
-#endif
-
- FIB_ITERATE_INIT(&fit, &tab->fib);
-again:
- FIB_ITERATE_START(&tab->fib, &fit, f)
- {
- net *n = (net *) f;
- ncnt++;
- if (!n->routes) /* Orphaned FIB entry */
- {
- FIB_ITERATE_PUT(&fit, f);
- fib_delete(&tab->fib, f);
- ndel++;
- goto again;
- }
- }
- FIB_ITERATE_END(f);
- DBG("Pruned %d of %d networks\n", ndel, ncnt);
+ if (tab->prune_state == 0)
+ ev_schedule(tab->rt_event);
- tab->gc_counter = 0;
- tab->gc_time = now;
- tab->gc_scheduled = 0;
+ /* state change 0->1, 2->3 */
+ tab->prune_state |= 1;
}
+
static void
rt_event(void *ptr)
{
rtable *tab = ptr;
+ rt_lock_table(tab);
+
if (tab->hcu_scheduled)
rt_update_hostcache(tab);
@@ -1513,28 +1586,21 @@ rt_event(void *ptr)
rt_next_hop_update(tab);
if (tab->prune_state)
- if (!rt_prune_table(tab))
- {
- /* Table prune unfinished */
- ev_schedule(tab->rt_event);
- return;
- }
+ rt_prune_table(tab);
- if (tab->gc_scheduled)
- {
- rt_prune_nets(tab);
- rt_prune_sources(); // FIXME this should be moved to independent event
- }
+ rt_unlock_table(tab);
}
void
rt_setup(pool *p, rtable *t, char *name, struct rtable_config *cf)
{
bzero(t, sizeof(*t));
- fib_init(&t->fib, p, sizeof(net), 0, rte_init);
t->name = name;
t->config = cf;
- init_list(&t->hooks);
+ t->addr_type = cf ? cf->addr_type : NET_IP4;
+ fib_init(&t->fib, p, t->addr_type, sizeof(net), OFFSETOF(net, n), 0, NULL);
+ init_list(&t->channels);
+
if (cf)
{
t->rt_event = ev_new(p);
@@ -1561,115 +1627,117 @@ rt_init(void)
}
-static int
-rt_prune_step(rtable *tab, int *limit)
+/**
+ * rt_prune_table - prune a routing table
+ *
+ * The prune loop scans routing tables and removes routes belonging to flushing
+ * protocols, discarded routes and also stale network entries. It is called from
+ * rt_event(). The event is rescheduled if the current iteration do not finish
+ * the table. The pruning is directed by the prune state (@prune_state),
+ * specifying whether the prune cycle is scheduled or running, and there
+ * is also a persistent pruning iterator (@prune_fit).
+ *
+ * The prune loop is used also for channel flushing. For this purpose, the
+ * channels to flush are marked before the iteration and notified after the
+ * iteration.
+ */
+static void
+rt_prune_table(rtable *tab)
{
struct fib_iterator *fit = &tab->prune_fit;
+ int limit = 512;
+
+ struct channel *c;
+ node *n, *x;
DBG("Pruning route table %s\n", tab->name);
#ifdef DEBUGGING
fib_check(&tab->fib);
#endif
- if (tab->prune_state == RPS_NONE)
- return 1;
+ if (tab->prune_state == 0)
+ return;
- if (tab->prune_state == RPS_SCHEDULED)
- {
- FIB_ITERATE_INIT(fit, &tab->fib);
- tab->prune_state = RPS_RUNNING;
- }
+ if (tab->prune_state == 1)
+ {
+ /* Mark channels to flush */
+ WALK_LIST2(c, n, tab->channels, table_node)
+ if (c->channel_state == CS_FLUSHING)
+ c->flush_active = 1;
+
+ FIB_ITERATE_INIT(fit, &tab->fib);
+ tab->prune_state = 2;
+ }
again:
- FIB_ITERATE_START(&tab->fib, fit, fn)
+ FIB_ITERATE_START(&tab->fib, fit, net, n)
{
- net *n = (net *) fn;
rte *e;
rescan:
for (e=n->routes; e; e=e->next)
- if (e->sender->proto->flushing || (e->flags & REF_DISCARD))
+ if (e->sender->flush_active || (e->flags & REF_DISCARD))
{
- if (*limit <= 0)
+ if (limit <= 0)
{
- FIB_ITERATE_PUT(fit, fn);
- return 0;
+ FIB_ITERATE_PUT(fit);
+ ev_schedule(tab->rt_event);
+ return;
}
rte_discard(tab, e);
- (*limit)--;
+ limit--;
goto rescan;
}
+
if (!n->routes) /* Orphaned FIB entry */
{
- FIB_ITERATE_PUT(fit, fn);
- fib_delete(&tab->fib, fn);
+ FIB_ITERATE_PUT(fit);
+ fib_delete(&tab->fib, n);
goto again;
}
}
- FIB_ITERATE_END(fn);
+ FIB_ITERATE_END;
#ifdef DEBUGGING
fib_check(&tab->fib);
#endif
- tab->prune_state = RPS_NONE;
- return 1;
-}
+ tab->gc_counter = 0;
+ tab->gc_time = now;
-/**
- * rt_prune_table - prune a routing table
- * @tab: a routing table for pruning
- *
- * This function scans the routing table @tab and removes routes belonging to
- * flushing protocols, discarded routes and also stale network entries, in a
- * similar fashion like rt_prune_loop(). Returns 1 when all such routes are
- * pruned. Contrary to rt_prune_loop(), this function is not a part of the
- * protocol flushing loop, but it is called from rt_event() for just one routing
- * table.
- *
- * Note that rt_prune_table() and rt_prune_loop() share (for each table) the
- * prune state (@prune_state) and also the pruning iterator (@prune_fit).
- */
-static inline int
-rt_prune_table(rtable *tab)
-{
- int limit = 512;
- return rt_prune_step(tab, &limit);
-}
+ /* state change 2->0, 3->1 */
+ tab->prune_state &= 1;
-/**
- * rt_prune_loop - prune routing tables
- *
- * The prune loop scans routing tables and removes routes belonging to flushing
- * protocols, discarded routes and also stale network entries. Returns 1 when
- * all such routes are pruned. It is a part of the protocol flushing loop.
- */
-int
-rt_prune_loop(void)
-{
- int limit = 512;
- rtable *t;
+ if (tab->prune_state > 0)
+ ev_schedule(tab->rt_event);
- WALK_LIST(t, routing_tables)
- if (! rt_prune_step(t, &limit))
- return 0;
+ /* FIXME: This should be handled in a better way */
+ rt_prune_sources();
- return 1;
+ /* Close flushed channels */
+ WALK_LIST2_DELSAFE(c, n, x, tab->channels, table_node)
+ if (c->flush_active)
+ {
+ c->flush_active = 0;
+ channel_set_state(c, CS_DOWN);
+ }
+
+ return;
}
void
rt_preconfig(struct config *c)
{
- struct symbol *s = cf_get_symbol("master");
-
init_list(&c->tables);
- c->master_rtc = rt_new_table(s);
+
+ rt_new_table(cf_get_symbol("master4"), NET_IP4);
+ rt_new_table(cf_get_symbol("master6"), NET_IP6);
}
-/*
+/*
* Some functions for handing internal next hop updates
* triggered by rt_schedule_nhu().
*/
@@ -1801,17 +1869,17 @@ rt_next_hop_update(rtable *tab)
tab->nhu_state = 2;
}
- FIB_ITERATE_START(&tab->fib, fit, fn)
+ FIB_ITERATE_START(&tab->fib, fit, net, n)
{
if (max_feed <= 0)
{
- FIB_ITERATE_PUT(fit, fn);
+ FIB_ITERATE_PUT(fit);
ev_schedule(tab->rt_event);
return;
}
- max_feed -= rt_next_hop_update_net(tab, (net *) fn);
+ max_feed -= rt_next_hop_update_net(tab, n);
}
- FIB_ITERATE_END(fn);
+ FIB_ITERATE_END;
/* state change 2->0, 3->1 */
tab->nhu_state &= 1;
@@ -1822,19 +1890,28 @@ rt_next_hop_update(rtable *tab)
struct rtable_config *
-rt_new_table(struct symbol *s)
+rt_new_table(struct symbol *s, uint addr_type)
{
/* Hack that allows to 'redefine' the master table */
- if ((s->class == SYM_TABLE) && (s->def == new_config->master_rtc))
+ if ((s->class == SYM_TABLE) &&
+ (s->def == new_config->def_tables[addr_type]) &&
+ ((addr_type == NET_IP4) || (addr_type == NET_IP6)))
return s->def;
struct rtable_config *c = cfg_allocz(sizeof(struct rtable_config));
cf_define_symbol(s, SYM_TABLE, c);
c->name = s->name;
- add_tail(&new_config->tables, &c->n);
+ c->addr_type = addr_type;
c->gc_max_ops = 1000;
c->gc_min_time = 5;
+
+ add_tail(&new_config->tables, &c->n);
+
+ /* First table of each type is kept as default */
+ if (! new_config->def_tables[addr_type])
+ new_config->def_tables[addr_type] = c;
+
return c;
}
@@ -1939,119 +2016,104 @@ rt_commit(struct config *new, struct config *old)
}
static inline void
-do_feed_baby(struct proto *p, int type, struct announce_hook *h, net *n, rte *e)
+do_feed_channel(struct channel *c, net *n, rte *e)
{
rte_update_lock();
- if (type == RA_ACCEPTED)
- rt_notify_accepted(h, n, e, NULL, NULL, p->refeeding ? 2 : 1);
- else if (type == RA_MERGED)
- rt_notify_merged(h, n, NULL, NULL, e, p->refeeding ? e : NULL, p->refeeding);
- else
- rt_notify_basic(h, n, e, p->refeeding ? e : NULL, p->refeeding);
+ if (c->ra_mode == RA_ACCEPTED)
+ rt_notify_accepted(c, n, e, NULL, NULL, c->refeeding ? 2 : 1);
+ else if (c->ra_mode == RA_MERGED)
+ rt_notify_merged(c, n, NULL, NULL, e, c->refeeding ? e : NULL, c->refeeding);
+ else /* RA_BASIC */
+ rt_notify_basic(c, n, e, c->refeeding ? e : NULL, c->refeeding);
rte_update_unlock();
}
/**
- * rt_feed_baby - advertise routes to a new protocol
- * @p: protocol to be fed
+ * rt_feed_channel - advertise all routes to a channel
+ * @c: channel to be fed
*
- * This function performs one pass of advertisement of routes to a newly
- * initialized protocol. It's called by the protocol code as long as it
- * has something to do. (We avoid transferring all the routes in single
- * pass in order not to monopolize CPU time.)
+ * This function performs one pass of advertisement of routes to a channel that
+ * is in the ES_FEEDING state. It is called by the protocol code as long as it
+ * has something to do. (We avoid transferring all the routes in single pass in
+ * order not to monopolize CPU time.)
*/
int
-rt_feed_baby(struct proto *p)
+rt_feed_channel(struct channel *c)
{
- struct announce_hook *h;
- struct fib_iterator *fit;
+ struct fib_iterator *fit = &c->feed_fit;
int max_feed = 256;
- if (!p->feed_ahook) /* Need to initialize first */
+ ASSERT(c->export_state == ES_FEEDING);
+
+ if (!c->feed_active)
{
- if (!p->ahooks)
- return 1;
- DBG("Announcing routes to new protocol %s\n", p->name);
- p->feed_ahook = p->ahooks;
- fit = p->feed_iterator = mb_alloc(p->pool, sizeof(struct fib_iterator));
- goto next_hook;
+ FIB_ITERATE_INIT(fit, &c->table->fib);
+ c->feed_active = 1;
}
- fit = p->feed_iterator;
-again:
- h = p->feed_ahook;
- FIB_ITERATE_START(&h->table->fib, fit, fn)
+ FIB_ITERATE_START(&c->table->fib, fit, net, n)
{
- net *n = (net *) fn;
rte *e = n->routes;
if (max_feed <= 0)
{
- FIB_ITERATE_PUT(fit, fn);
+ FIB_ITERATE_PUT(fit);
return 0;
}
- /* XXXX perhaps we should change feed for RA_ACCEPTED to not use 'new' */
+ /* FIXME: perhaps we should change feed for RA_ACCEPTED to not use 'new' */
- if ((p->accept_ra_types == RA_OPTIMAL) ||
- (p->accept_ra_types == RA_ACCEPTED) ||
- (p->accept_ra_types == RA_MERGED))
+ if ((c->ra_mode == RA_OPTIMAL) ||
+ (c->ra_mode == RA_ACCEPTED) ||
+ (c->ra_mode == RA_MERGED))
if (rte_is_valid(e))
{
- if (p->export_state != ES_FEEDING)
- return 1; /* In the meantime, the protocol fell down. */
+ /* In the meantime, the protocol may fell down */
+ if (c->export_state != ES_FEEDING)
+ goto done;
- do_feed_baby(p, p->accept_ra_types, h, n, e);
+ do_feed_channel(c, n, e);
max_feed--;
}
- if (p->accept_ra_types == RA_ANY)
+ if (c->ra_mode == RA_ANY)
for(e = n->routes; e; e = e->next)
{
- if (p->export_state != ES_FEEDING)
- return 1; /* In the meantime, the protocol fell down. */
+ /* In the meantime, the protocol may fell down */
+ if (c->export_state != ES_FEEDING)
+ goto done;
if (!rte_is_valid(e))
continue;
- do_feed_baby(p, RA_ANY, h, n, e);
+ do_feed_channel(c, n, e);
max_feed--;
}
}
- FIB_ITERATE_END(fn);
- p->feed_ahook = h->next;
- if (!p->feed_ahook)
- {
- mb_free(p->feed_iterator);
- p->feed_iterator = NULL;
- return 1;
- }
+ FIB_ITERATE_END;
-next_hook:
- h = p->feed_ahook;
- FIB_ITERATE_INIT(fit, &h->table->fib);
- goto again;
+done:
+ c->feed_active = 0;
+ return 1;
}
/**
* rt_feed_baby_abort - abort protocol feeding
- * @p: protocol
+ * @c: channel
*
- * This function is called by the protocol code when the protocol
- * stops or ceases to exist before the last iteration of rt_feed_baby()
- * has finished.
+ * This function is called by the protocol code when the protocol stops or
+ * ceases to exist during the feeding.
*/
void
-rt_feed_baby_abort(struct proto *p)
+rt_feed_channel_abort(struct channel *c)
{
- if (p->feed_ahook)
+ if (c->feed_active)
{
- /* Unlink the iterator and exit */
- fit_get(&p->feed_ahook->table->fib, p->feed_iterator);
- p->feed_ahook = NULL;
+ /* Unlink the iterator */
+ fit_get(&c->table->fib, &c->feed_fit);
+ c->feed_active = 0;
}
}
-
static inline unsigned
ptr_hash(void *ptr)
{
@@ -2059,10 +2121,10 @@ ptr_hash(void *ptr)
return p ^ (p << 8) ^ (p >> 16);
}
-static inline unsigned
+static inline u32
hc_hash(ip_addr a, rtable *dep)
{
- return (ipa_hash(a) ^ ptr_hash(dep)) & 0xffff;
+ return ipa_hash(a) ^ ptr_hash(dep);
}
static inline void
@@ -2096,7 +2158,7 @@ hc_alloc_table(struct hostcache *hc, unsigned order)
{
unsigned hsize = 1 << order;
hc->hash_order = order;
- hc->hash_shift = 16 - order;
+ hc->hash_shift = 32 - order;
hc->hash_max = (order >= HC_HI_ORDER) ? ~0 : (hsize HC_HI_MARK);
hc->hash_min = (order <= HC_LO_ORDER) ? 0 : (hsize HC_LO_MARK);
@@ -2197,12 +2259,10 @@ rt_free_hostcache(rtable *tab)
static void
rt_notify_hostcache(rtable *tab, net *net)
{
- struct hostcache *hc = tab->hostcache;
-
if (tab->hcu_scheduled)
return;
- if (trie_match_prefix(hc->trie, net->n.prefix, net->n.pxlen))
+ if (trie_match_net(tab->hostcache->trie, net->n.addr))
rt_schedule_hcu(tab);
}
@@ -2253,24 +2313,26 @@ rt_update_hostentry(rtable *tab, struct hostentry *he)
rta *old_src = he->src;
int pxlen = 0;
- /* Reset the hostentry */
+ /* Reset the hostentry */
he->src = NULL;
he->gw = IPA_NONE;
he->dest = RTD_UNREACHABLE;
he->igp_metric = 0;
- net *n = net_route(tab, he->addr, MAX_PREFIX_LENGTH);
+ net_addr he_addr;
+ net_fill_ip_host(&he_addr, he->addr);
+ net *n = net_route(tab, &he_addr);
if (n)
{
rte *e = n->routes;
rta *a = e->attrs;
- pxlen = n->n.pxlen;
+ pxlen = n->n.addr->pxlen;
if (a->hostentry)
{
/* Recursive route should not depend on another recursive route */
- log(L_WARN "Next hop address %I resolvable through recursive route for %I/%d",
- he->addr, n->n.prefix, pxlen);
+ log(L_WARN "Next hop address %I resolvable through recursive route for %N",
+ he->addr, n->n.addr);
goto done;
}
@@ -2301,7 +2363,7 @@ rt_update_hostentry(rtable *tab, struct hostentry *he)
done:
/* Add a prefix range to the trie */
- trie_add_prefix(tab->hostcache->trie, he->addr, MAX_PREFIX_LENGTH, pxlen, MAX_PREFIX_LENGTH);
+ trie_add_prefix(tab->hostcache->trie, &he_addr, pxlen, he_addr.pxlen);
rta_free(old_src);
return old_src != he->src;
@@ -2342,7 +2404,7 @@ rt_get_hostentry(rtable *tab, ip_addr a, ip_addr ll, rtable *dep)
if (!tab->hostcache)
rt_init_hostcache(tab);
- uint k = hc_hash(a, dep);
+ u32 k = hc_hash(a, dep);
struct hostcache *hc = tab->hostcache;
for (he = hc->hash_table[k >> hc->hash_shift]; he != NULL; he = he->next)
if (ipa_equal(he->addr, a) && (he->tab == dep))
@@ -2384,7 +2446,8 @@ rt_format_via(rte *e, byte *via)
static void
rt_show_rte(struct cli *c, byte *ia, rte *e, struct rt_show_data *d, ea_list *tmpa)
{
- byte via[STD_ADDRESS_P_LENGTH+32], from[STD_ADDRESS_P_LENGTH+8];
+ byte via[IPA_MAX_TEXT_LENGTH+32];
+ byte from[IPA_MAX_TEXT_LENGTH+8];
byte tm[TM_DATETIME_BUFFER_SIZE], info[256];
rta *a = e->attrs;
int primary = (e->net->routes == e);
@@ -2425,23 +2488,14 @@ static void
rt_show_net(struct cli *c, net *n, struct rt_show_data *d)
{
rte *e, *ee;
- byte ia[STD_ADDRESS_P_LENGTH+8];
+ byte ia[NET_MAX_TEXT_LENGTH+1];
struct ea_list *tmpa;
- struct announce_hook *a = NULL;
+ struct channel *ec = d->export_channel;
int first = 1;
int pass = 0;
- bsprintf(ia, "%I/%d", n->n.prefix, n->n.pxlen);
-
- if (d->export_mode)
- {
- if (! d->export_protocol->rt_notify)
- return;
+ bsprintf(ia, "%N", n->n.addr);
- a = proto_find_announce_hook(d->export_protocol, d->table);
- if (!a)
- return;
- }
for (e = n->routes; e; e = e->next)
{
@@ -2460,10 +2514,10 @@ rt_show_net(struct cli *c, net *n, struct rt_show_data *d)
tmpa = make_tmp_attrs(e, rte_update_pool);
/* Special case for merged export */
- if ((d->export_mode == RSEM_EXPORT) && (d->export_protocol->accept_ra_types == RA_MERGED))
+ if ((d->export_mode == RSEM_EXPORT) && (ec->ra_mode == RA_MERGED))
{
rte *rt_free;
- e = rt_export_merged(a, n, &rt_free, &tmpa, 1);
+ e = rt_export_merged(ec, n, &rt_free, &tmpa, 1);
pass = 1;
if (!e)
@@ -2474,7 +2528,7 @@ rt_show_net(struct cli *c, net *n, struct rt_show_data *d)
struct proto *ep = d->export_protocol;
int ic = ep->import_control ? ep->import_control(ep, &e, &tmpa, rte_update_pool) : 0;
- if (ep->accept_ra_types == RA_OPTIMAL || ep->accept_ra_types == RA_MERGED)
+ if (ec->ra_mode == RA_OPTIMAL || ec->ra_mode == RA_MERGED)
pass = 1;
if (ic < 0)
@@ -2488,12 +2542,12 @@ rt_show_net(struct cli *c, net *n, struct rt_show_data *d)
* command may change the export filter and do not update routes.
*/
int do_export = (ic > 0) ||
- (f_run(a->out_filter, &e, &tmpa, rte_update_pool, FF_FORCE_TMPATTR) <= F_ACCEPT);
+ (f_run(ec->out_filter, &e, &tmpa, rte_update_pool, FF_FORCE_TMPATTR) <= F_ACCEPT);
if (do_export != (d->export_mode == RSEM_EXPORT))
goto skip;
- if ((d->export_mode == RSEM_EXPORT) && (ep->accept_ra_types == RA_ACCEPTED))
+ if ((d->export_mode == RSEM_EXPORT) && (ec->ra_mode == RA_ACCEPTED))
pass = 1;
}
}
@@ -2522,6 +2576,15 @@ rt_show_net(struct cli *c, net *n, struct rt_show_data *d)
}
}
+static struct channel *
+rt_show_export_channel(struct rt_show_data *d)
+{
+ if (! d->export_protocol->rt_notify)
+ return NULL;
+
+ return proto_find_channel_by_table(d->export_protocol, d->table);
+}
+
static void
rt_show_cont(struct cli *c)
{
@@ -2534,27 +2597,27 @@ rt_show_cont(struct cli *c)
struct fib *fib = &d->table->fib;
struct fib_iterator *it = &d->fit;
- FIB_ITERATE_START(fib, it, f)
+ if (d->export_mode)
{
- net *n = (net *) f;
- if (d->running_on_config && d->running_on_config != config)
- {
- cli_printf(c, 8004, "Stopped due to reconfiguration");
- goto done;
- }
- if (d->export_protocol && (d->export_protocol->export_state == ES_DOWN))
- {
- cli_printf(c, 8005, "Protocol is down");
+ /* Ensure we have current export channel */
+ d->export_channel = rt_show_export_channel(d);
+ if (!d->export_channel || (d->export_channel->export_state == ES_DOWN))
+ {
+ cli_printf(c, 8005, "Channel is down");
goto done;
}
+ }
+
+ FIB_ITERATE_START(fib, it, net, n)
+ {
if (!max--)
{
- FIB_ITERATE_PUT(it, f);
+ FIB_ITERATE_PUT(it);
return;
}
rt_show_net(c, n, d);
}
- FIB_ITERATE_END(f);
+ FIB_ITERATE_END;
if (d->stats)
cli_printf(c, 14, "%d of %d routes for %d networks", d->show_counter, d->rt_counter, d->net_counter);
else
@@ -2572,21 +2635,35 @@ rt_show_cleanup(struct cli *c)
fit_get(&d->table->fib, &d->fit);
}
+static inline rtable *
+rt_show_get_table(struct proto *p)
+{
+ /* FIXME: Use a better way to handle multi-channel protocols */
+
+ if (p->main_channel)
+ return p->main_channel->table;
+
+ if (!EMPTY_LIST(p->channels))
+ return ((struct channel *) HEAD(p->channels))->table;
+
+ return NULL;
+}
+
void
rt_show(struct rt_show_data *d)
{
net *n;
/* Default is either a master table or a table related to a respective protocol */
- if (!d->table && d->export_protocol) d->table = d->export_protocol->table;
- if (!d->table && d->show_protocol) d->table = d->show_protocol->table;
- if (!d->table) d->table = config->master_rtc->table;
+ if (!d->table && d->export_protocol) d->table = rt_show_get_table(d->export_protocol);
+ if (!d->table && d->show_protocol) d->table = rt_show_get_table(d->show_protocol);
+ if (!d->table) d->table = config->def_tables[NET_IP4]->table; /* FIXME: iterate through all tables ? */
/* Filtered routes are neither exported nor have sensible ordering */
if (d->filtered && (d->export_mode || d->primary_only))
cli_msg(0, "");
- if (d->pxlen == 256)
+ if (!d->addr)
{
FIB_ITERATE_INIT(&d->fit, &d->table->fib);
this_cli->cont = rt_show_cont;
@@ -2595,10 +2672,21 @@ rt_show(struct rt_show_data *d)
}
else
{
+ if (d->export_mode)
+ {
+ /* Find channel associated with the export protocol */
+ d->export_channel = rt_show_export_channel(d);
+ if (!d->export_channel || (d->export_channel->export_state == ES_DOWN))
+ {
+ cli_msg(8005, "Channel is down");
+ return;
+ }
+ }
+
if (d->show_for)
- n = net_route(d->table, d->prefix, d->pxlen);
+ n = net_route(d->table, d->addr);
else
- n = net_find(d->table, d->prefix, d->pxlen);
+ n = net_find(d->table, d->addr);
if (n)
rt_show_net(this_cli, n, d);
@@ -2619,26 +2707,24 @@ rt_show(struct rt_show_data *d)
* net_find - find a network entry
* @tab: a routing table
* @addr: address of the network
- * @len: length of the network prefix
*
* net_find() looks up the given network in routing table @tab and
* returns a pointer to its &net entry or %NULL if no such network
* exists.
*/
-static inline net *net_find(rtable *tab, ip_addr addr, unsigned len)
+static inline net *net_find(rtable *tab, net_addr *addr)
{ DUMMY; }
/**
* net_get - obtain a network entry
* @tab: a routing table
* @addr: address of the network
- * @len: length of the network prefix
*
* net_get() looks up the given network in routing table @tab and
* returns a pointer to its &net entry. If no such entry exists, it's
* created.
*/
-static inline net *net_get(rtable *tab, ip_addr addr, unsigned len)
+static inline net *net_get(rtable *tab, net_addr *addr)
{ DUMMY; }
/**
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-12 01:19:46 +0000