diff options
Diffstat (limited to 'proto/babel')
-rw-r--r-- | proto/babel/babel.c | 195 | ||||
-rw-r--r-- | proto/babel/babel.h | 6 | ||||
-rw-r--r-- | proto/babel/config.Y | 4 |
3 files changed, 106 insertions, 99 deletions
diff --git a/proto/babel/babel.c b/proto/babel/babel.c index 23cb6774..685bb122 100644 --- a/proto/babel/babel.c +++ b/proto/babel/babel.c @@ -37,6 +37,7 @@ #include <stdlib.h> #include "babel.h" +#include "lib/macro.h" #define LOG_PKT_AUTH(msg, args...) \ log_rl(&p->log_pkt_tbf, L_AUTH "%s: " msg, p->p.name, args) @@ -58,6 +59,8 @@ static void babel_update_cost(struct babel_neighbor *n); static inline void babel_kick_timer(struct babel_proto *p); static inline void babel_iface_kick_timer(struct babel_iface *ifa); +static struct ea_class ea_babel_metric, ea_babel_router_id, ea_babel_seqno; + /* * Functions to maintain data structures */ @@ -656,37 +659,14 @@ babel_announce_rte(struct babel_proto *p, struct babel_entry *e) if (r) { - rta a0 = { - .source = RTS_BABEL, - .scope = SCOPE_UNIVERSE, - .dest = RTD_UNICAST, - .pref = c->preference, - .from = r->neigh->addr, - .nh.gw = r->next_hop, - .nh.iface = r->neigh->ifa->iface, - .eattrs = alloca(sizeof(ea_list) + 3*sizeof(eattr)), - }; - - *a0.eattrs = (ea_list) { .count = 3 }; - a0.eattrs->attrs[0] = (eattr) { - .id = EA_BABEL_METRIC, - .type = EAF_TYPE_INT, - .u.data = r->metric, - }; - - struct adata *ad = alloca(sizeof(struct adata) + sizeof(u64)); - ad->length = sizeof(u64); - memcpy(ad->data, &(r->router_id), sizeof(u64)); - a0.eattrs->attrs[1] = (eattr) { - .id = EA_BABEL_ROUTER_ID, - .type = EAF_TYPE_OPAQUE, - .u.ptr = ad, - }; - - a0.eattrs->attrs[2] = (eattr) { - .id = EA_BABEL_SEQNO, - .type = EAF_TYPE_INT, - .u.data = r->seqno, + struct nexthop_adata nhad = { + .nh = { + .gw = r->next_hop, + .iface = r->neigh->ifa->iface, + }, + .ad = { + .length = sizeof nhad - sizeof nhad.ad, + }, }; /* @@ -695,36 +675,54 @@ babel_announce_rte(struct babel_proto *p, struct babel_entry *e) * have routing work. */ if (!neigh_find(&p->p, r->next_hop, r->neigh->ifa->iface, 0)) - a0.nh.flags = RNF_ONLINK; + nhad.nh.flags = RNF_ONLINK; + + struct { + ea_list l; + eattr a[7]; + } eattrs = { + .l.count = ARRAY_SIZE(eattrs.a), + .a = { + EA_LITERAL_EMBEDDED(&ea_gen_preference, 0, c->preference), + EA_LITERAL_STORE_ADATA(&ea_gen_from, 0, &r->neigh->addr, sizeof(r->neigh->addr)), + EA_LITERAL_EMBEDDED(&ea_gen_source, 0, RTS_BABEL), + EA_LITERAL_STORE_ADATA(&ea_gen_nexthop, 0, nhad.ad.data, nhad.ad.length), + EA_LITERAL_EMBEDDED(&ea_babel_metric, 0, r->metric), + EA_LITERAL_STORE_ADATA(&ea_babel_router_id, 0, &r->router_id, sizeof(r->router_id)), + EA_LITERAL_EMBEDDED(&ea_babel_seqno, 0, r->seqno), + } + }; - rta *a = rta_lookup(&a0); - rte *rte = rte_get_temp(a, p->p.main_source); + rte e0 = { + .attrs = &eattrs.l, + .src = p->p.main_source, + }; e->unreachable = 0; - rte_update2(c, e->n.addr, rte, p->p.main_source); + rte_update(c, e->n.addr, &e0, p->p.main_source); } else if (e->valid && (e->router_id != p->router_id)) { /* Unreachable */ - rta a0 = { - .source = RTS_BABEL, - .scope = SCOPE_UNIVERSE, - .dest = RTD_UNREACHABLE, - .pref = 1, - }; + ea_list *ea = NULL; - rta *a = rta_lookup(&a0); - rte *rte = rte_get_temp(a, p->p.main_source); - rte->pflags = 0; + ea_set_attr_u32(&ea, &ea_gen_preference, 0, 1); + ea_set_attr_u32(&ea, &ea_gen_source, 0, RTS_BABEL); + ea_set_dest(&ea, 0, RTD_UNREACHABLE); + + rte e0 = { + .attrs = ea, + .src = p->p.main_source, + }; e->unreachable = 1; - rte_update2(c, e->n.addr, rte, p->p.main_source); + rte_update(c, e->n.addr, &e0, p->p.main_source); } else { /* Retraction */ e->unreachable = 0; - rte_update2(c, e->n.addr, NULL, p->p.main_source); + rte_update(c, e->n.addr, NULL, p->p.main_source); } } @@ -734,7 +732,7 @@ babel_announce_retraction(struct babel_proto *p, struct babel_entry *e) { struct channel *c = (e->n.addr->type == NET_IP4) ? p->ip4_channel : p->ip6_channel; e->unreachable = 0; - rte_update2(c, e->n.addr, NULL, p->p.main_source); + rte_update(c, e->n.addr, NULL, p->p.main_source); } @@ -2069,38 +2067,41 @@ static void babel_get_route_info(rte *rte, byte *buf) { u64 rid = 0; - eattr *e = ea_find(rte->attrs->eattrs, EA_BABEL_ROUTER_ID); + eattr *e = ea_find(rte->attrs, &ea_babel_router_id); if (e) memcpy(&rid, e->u.ptr->data, sizeof(u64)); - buf += bsprintf(buf, " (%d/%d) [%lR]", rte->attrs->pref, - ea_get_int(rte->attrs->eattrs, EA_BABEL_METRIC, BABEL_INFINITY), rid); + buf += bsprintf(buf, " (%d/%d) [%lR]", + rt_get_preference(rte), + ea_get_int(rte->attrs, &ea_babel_metric, BABEL_INFINITY), rid); } -static int -babel_get_attr(const eattr *a, byte *buf, int buflen UNUSED) +static void +babel_router_id_format(const eattr *a, byte *buf, uint len) { - switch (a->id) - { - case EA_BABEL_SEQNO: - return GA_FULL; + u64 rid = 0; + memcpy(&rid, a->u.ptr->data, sizeof(u64)); + bsnprintf(buf, len, "%lR", rid); +} - case EA_BABEL_METRIC: - bsprintf(buf, "metric: %d", a->u.data); - return GA_FULL; +static struct ea_class ea_babel_metric = { + .name = "babel_metric", + .type = T_INT, +}; - case EA_BABEL_ROUTER_ID: - { - u64 rid = 0; - memcpy(&rid, a->u.ptr->data, sizeof(u64)); - bsprintf(buf, "router_id: %lR", rid); - return GA_FULL; - } +static struct ea_class ea_babel_router_id = { + .name = "babel_router_id", + .type = T_OPAQUE, + .readonly = 1, + .format = babel_router_id_format, +}; + +static struct ea_class ea_babel_seqno = { + .name = "babel_seqno", + .type = T_INT, + .readonly = 1, +}; - default: - return GA_UNKNOWN; - } -} void babel_show_interfaces(struct proto *P, const char *iff) @@ -2300,9 +2301,13 @@ babel_kick_timer(struct babel_proto *p) static int babel_preexport(struct channel *C, struct rte *new) { - struct rta *a = new->attrs; + if (new->src->owner != &C->proto->sources) + return 0; + /* Reject our own unreachable routes */ - if ((a->dest == RTD_UNREACHABLE) && (new->src->proto == C->proto)) + eattr *ea = ea_find(new->attrs, &ea_gen_nexthop); + struct nexthop_adata *nhad = (void *) ea->u.ptr; + if (!NEXTHOP_IS_REACHABLE(nhad)) return -1; return 0; @@ -2313,8 +2318,8 @@ babel_preexport(struct channel *C, struct rte *new) * so store it into our data structures. */ static void -babel_rt_notify(struct proto *P, struct channel *c UNUSED, struct network *net, - struct rte *new, struct rte *old UNUSED) +babel_rt_notify(struct proto *P, struct channel *c UNUSED, const net_addr *net, + struct rte *new, const struct rte *old UNUSED) { struct babel_proto *p = (void *) P; struct babel_entry *e; @@ -2323,13 +2328,13 @@ babel_rt_notify(struct proto *P, struct channel *c UNUSED, struct network *net, { /* Update */ uint rt_seqno; - uint rt_metric = ea_get_int(new->attrs->eattrs, EA_BABEL_METRIC, 0); + uint rt_metric = ea_get_int(new->attrs, &ea_babel_metric, 0); u64 rt_router_id = 0; - if (new->src->proto == P) + if (new->src->owner == &P->sources) { - rt_seqno = ea_find(new->attrs->eattrs, EA_BABEL_SEQNO)->u.data; - eattr *e = ea_find(new->attrs->eattrs, EA_BABEL_ROUTER_ID); + rt_seqno = ea_get_int(new->attrs, &ea_babel_seqno, 0); + eattr *e = ea_find(new->attrs, &ea_babel_router_id); if (e) memcpy(&rt_router_id, e->u.ptr->data, sizeof(u64)); } @@ -2342,11 +2347,11 @@ babel_rt_notify(struct proto *P, struct channel *c UNUSED, struct network *net, if (rt_metric > BABEL_INFINITY) { log(L_WARN "%s: Invalid babel_metric value %u for route %N", - p->p.name, rt_metric, net->n.addr); + p->p.name, rt_metric, net); rt_metric = BABEL_INFINITY; } - e = babel_get_entry(p, net->n.addr); + e = babel_get_entry(p, net); /* Activate triggered updates */ if ((e->valid != BABEL_ENTRY_VALID) || @@ -2364,7 +2369,7 @@ babel_rt_notify(struct proto *P, struct channel *c UNUSED, struct network *net, else { /* Withdraw */ - e = babel_find_entry(p, net->n.addr); + e = babel_find_entry(p, net); if (!e || e->valid != BABEL_ENTRY_VALID) return; @@ -2380,16 +2385,16 @@ babel_rt_notify(struct proto *P, struct channel *c UNUSED, struct network *net, static int babel_rte_better(struct rte *new, struct rte *old) { - uint new_metric = ea_get_int(new->attrs->eattrs, EA_BABEL_METRIC, BABEL_INFINITY); - uint old_metric = ea_get_int(old->attrs->eattrs, EA_BABEL_METRIC, BABEL_INFINITY); + uint new_metric = ea_get_int(new->attrs, &ea_babel_metric, BABEL_INFINITY); + uint old_metric = ea_get_int(old->attrs, &ea_babel_metric, BABEL_INFINITY); return new_metric < old_metric; } static u32 -babel_rte_igp_metric(struct rte *rt) +babel_rte_igp_metric(const rte *rt) { - return ea_get_int(rt->attrs->eattrs, EA_BABEL_METRIC, BABEL_INFINITY); + return ea_get_int(rt->attrs, &ea_babel_metric, BABEL_INFINITY); } @@ -2410,6 +2415,12 @@ babel_postconfig(struct proto_config *CF) cf->ip6_channel = ip6 ?: ip6_sadr; } +static struct rte_owner_class babel_rte_owner_class = { + .get_route_info = babel_get_route_info, + .rte_better = babel_rte_better, + .rte_igp_metric = babel_rte_igp_metric, +}; + static struct proto * babel_init(struct proto_config *CF) { @@ -2423,8 +2434,8 @@ babel_init(struct proto_config *CF) P->if_notify = babel_if_notify; P->rt_notify = babel_rt_notify; P->preexport = babel_preexport; - P->rte_better = babel_rte_better; - P->rte_igp_metric = babel_rte_igp_metric; + + P->sources.class = &babel_rte_owner_class; return P; } @@ -2522,11 +2533,9 @@ babel_reconfigure(struct proto *P, struct proto_config *CF) return 1; } - struct protocol proto_babel = { .name = "Babel", .template = "babel%d", - .class = PROTOCOL_BABEL, .preference = DEF_PREF_BABEL, .channel_mask = NB_IP | NB_IP6_SADR, .proto_size = sizeof(struct babel_proto), @@ -2537,12 +2546,16 @@ struct protocol proto_babel = { .start = babel_start, .shutdown = babel_shutdown, .reconfigure = babel_reconfigure, - .get_route_info = babel_get_route_info, - .get_attr = babel_get_attr }; void babel_build(void) { proto_build(&proto_babel); + + EA_REGISTER_ALL( + &ea_babel_metric, + &ea_babel_router_id, + &ea_babel_seqno + ); } diff --git a/proto/babel/babel.h b/proto/babel/babel.h index da8386b3..9014ace2 100644 --- a/proto/babel/babel.h +++ b/proto/babel/babel.h @@ -16,7 +16,7 @@ #include "nest/bird.h" #include "nest/cli.h" #include "nest/iface.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/protocol.h" #include "nest/locks.h" #include "nest/password.h" @@ -26,10 +26,6 @@ #include "lib/string.h" #include "lib/timer.h" -#define EA_BABEL_METRIC EA_CODE(PROTOCOL_BABEL, 0) -#define EA_BABEL_ROUTER_ID EA_CODE(PROTOCOL_BABEL, 1) -#define EA_BABEL_SEQNO EA_CODE(PROTOCOL_BABEL, 2) - #define BABEL_MAGIC 42 #define BABEL_VERSION 2 #define BABEL_PORT 6696 diff --git a/proto/babel/config.Y b/proto/babel/config.Y index 05210fa4..a4350eed 100644 --- a/proto/babel/config.Y +++ b/proto/babel/config.Y @@ -24,7 +24,7 @@ CF_DECLS CF_KEYWORDS(BABEL, INTERFACE, METRIC, RXCOST, HELLO, UPDATE, INTERVAL, PORT, TYPE, WIRED, WIRELESS, RX, TX, BUFFER, PRIORITY, LENGTH, CHECK, LINK, - NEXT, HOP, IPV4, IPV6, BABEL_METRIC, SHOW, INTERFACES, NEIGHBORS, + NEXT, HOP, IPV4, IPV6, SHOW, INTERFACES, NEIGHBORS, ENTRIES, RANDOMIZE, ROUTER, ID, AUTHENTICATION, NONE, MAC, PERMISSIVE) CF_GRAMMAR @@ -163,8 +163,6 @@ babel_iface_opt_list: babel_iface: babel_iface_start iface_patt_list_nopx babel_iface_opt_list babel_iface_finish; -dynamic_attr: BABEL_METRIC { $$ = f_new_dynamic_attr(EAF_TYPE_INT, T_INT, EA_BABEL_METRIC); } ; - CF_CLI_HELP(SHOW BABEL, ..., [[Show information about Babel protocol]]); CF_CLI(SHOW BABEL INTERFACES, optproto opttext, [<name>] [\"<interface>\"], [[Show information about Babel interfaces]]) |