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-rw-r--r--sysdep/bsd/krt-sock.c7
-rw-r--r--sysdep/bsd/krt-sys.h1
-rw-r--r--sysdep/linux/krt-sys.h8
-rw-r--r--sysdep/linux/netlink.Y2
-rw-r--r--sysdep/linux/netlink.c90
-rw-r--r--sysdep/unix/krt.c11
-rw-r--r--sysdep/unix/krt.h3
7 files changed, 82 insertions, 40 deletions
diff --git a/sysdep/bsd/krt-sock.c b/sysdep/bsd/krt-sock.c
index 064bae18..29203d1b 100644
--- a/sysdep/bsd/krt-sock.c
+++ b/sysdep/bsd/krt-sock.c
@@ -970,13 +970,15 @@ krt_sock_close_shared(void)
}
}
-void
+int
krt_sys_start(struct krt_proto *p)
{
krt_table_map[KRT_CF->sys.table_id] = p;
krt_sock_open_shared();
p->sys.sk = krt_sock;
+
+ return 1;
}
void
@@ -992,10 +994,11 @@ krt_sys_shutdown(struct krt_proto *p)
#else
-void
+int
krt_sys_start(struct krt_proto *p)
{
p->sys.sk = krt_sock_open(p->p.pool, p, KRT_CF->sys.table_id);
+ return 1;
}
void
diff --git a/sysdep/bsd/krt-sys.h b/sysdep/bsd/krt-sys.h
index 2c6e35c5..a63f8caf 100644
--- a/sysdep/bsd/krt-sys.h
+++ b/sysdep/bsd/krt-sys.h
@@ -42,6 +42,7 @@ struct krt_state {
};
+static inline void krt_sys_io_init(void) { }
static inline void krt_sys_init(struct krt_proto *p UNUSED) { }
static inline int krt_sys_get_attr(eattr *a UNUSED, byte *buf UNUSED, int buflen UNUSED) { }
diff --git a/sysdep/linux/krt-sys.h b/sysdep/linux/krt-sys.h
index e32e4fe1..7fd5f139 100644
--- a/sysdep/linux/krt-sys.h
+++ b/sysdep/linux/krt-sys.h
@@ -84,18 +84,18 @@ static inline struct ifa * kif_get_primary_ip(struct iface *i) { return NULL; }
#define EA_KRT_FEATURE_ALLFRAG EA_KRT_FEATURES | EA_BIT(0x3)
-
-#define NL_NUM_TABLES 256
-
struct krt_params {
- int table_id; /* Kernel table ID we sync with */
+ u32 table_id; /* Kernel table ID we sync with */
};
struct krt_state {
+ struct krt_proto *hash_next;
};
static inline void krt_sys_init(struct krt_proto *p UNUSED) { }
+static inline void krt_sys_preconfig(struct config *c UNUSED) { }
+static inline void krt_sys_postconfig(struct krt_config *x UNUSED) { }
#endif
diff --git a/sysdep/linux/netlink.Y b/sysdep/linux/netlink.Y
index f8137e23..e9c225a2 100644
--- a/sysdep/linux/netlink.Y
+++ b/sysdep/linux/netlink.Y
@@ -23,8 +23,6 @@ CF_ADDTO(kern_proto, kern_proto kern_sys_item ';')
kern_sys_item:
KERNEL TABLE expr {
- if ($3 <= 0 || $3 >= NL_NUM_TABLES)
- cf_error("Kernel routing table number out of range");
THIS_KRT->sys.table_id = $3;
}
;
diff --git a/sysdep/linux/netlink.c b/sysdep/linux/netlink.c
index 674d338b..db998926 100644
--- a/sysdep/linux/netlink.c
+++ b/sysdep/linux/netlink.c
@@ -25,6 +25,7 @@
#include "lib/krt.h"
#include "lib/socket.h"
#include "lib/string.h"
+#include "lib/hash.h"
#include "conf/conf.h"
#include <asm/types.h>
@@ -32,6 +33,7 @@
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
+
#ifndef MSG_TRUNC /* Hack: Several versions of glibc miss this one :( */
#define MSG_TRUNC 0x20
#endif
@@ -40,6 +42,11 @@
#define IFF_LOWER_UP 0x10000
#endif
+#ifndef RTA_TABLE
+#define RTA_TABLE 15
+#endif
+
+
/*
* Synchronous Netlink interface
*/
@@ -650,7 +657,23 @@ kif_do_scan(struct kif_proto *p UNUSED)
* Routes
*/
-static struct krt_proto *nl_table_map[NL_NUM_TABLES];
+static inline u32
+krt_table_id(struct krt_proto *p)
+{
+ return KRT_CF->sys.table_id;
+}
+
+static HASH(struct krt_proto) nl_table_map;
+
+#define RTH_FN(k) u32_hash(k)
+#define RTH_EQ(k1,k2) k1 == k2
+#define RTH_KEY(p) krt_table_id(p)
+#define RTH_NEXT(p) p->sys.hash_next
+
+#define RTH_REHASH rth_rehash
+#define RTH_PARAMS /8, *2, 2, 2, 6, 20
+
+HASH_DEFINE_REHASH_FN(RTH, struct krt_proto)
int
krt_capable(rte *e)
@@ -708,12 +731,15 @@ nl_send_route(struct krt_proto *p, rte *e, struct ea_list *eattrs, int new)
r.r.rtm_family = BIRD_AF;
r.r.rtm_dst_len = net->n.pxlen;
- r.r.rtm_tos = 0;
- r.r.rtm_table = KRT_CF->sys.table_id;
r.r.rtm_protocol = RTPROT_BIRD;
r.r.rtm_scope = RT_SCOPE_UNIVERSE;
nl_add_attr_ipa(&r.h, sizeof(r), RTA_DST, net->n.prefix);
+ if (krt_table_id(p) < 256)
+ r.r.rtm_table = krt_table_id(p);
+ else
+ nl_add_attr_u32(&r.h, sizeof(r), RTA_TABLE, krt_table_id(p));
+
/* For route delete, we do not specify route attributes */
if (!new)
return nl_exchange(&r.h);
@@ -809,11 +835,12 @@ nl_parse_route(struct nlmsghdr *h, int scan)
{
struct krt_proto *p;
struct rtmsg *i;
- struct rtattr *a[RTA_CACHEINFO+1];
+ struct rtattr *a[RTA_TABLE+1];
int new = h->nlmsg_type == RTM_NEWROUTE;
ip_addr dst = IPA_NONE;
u32 oif = ~0;
+ u32 table;
int src;
if (!(i = nl_checkin(h, sizeof(*i))) || !nl_parse_attrs(RTM_RTA(i), a, sizeof(a)))
@@ -825,6 +852,7 @@ nl_parse_route(struct nlmsghdr *h, int scan)
(a[RTA_IIF] && RTA_PAYLOAD(a[RTA_IIF]) != 4) ||
#endif
(a[RTA_OIF] && RTA_PAYLOAD(a[RTA_OIF]) != 4) ||
+ (a[RTA_TABLE] && RTA_PAYLOAD(a[RTA_TABLE]) != 4) ||
(a[RTA_GATEWAY] && RTA_PAYLOAD(a[RTA_GATEWAY]) != sizeof(ip_addr)) ||
(a[RTA_PRIORITY] && RTA_PAYLOAD(a[RTA_PRIORITY]) != 4) ||
(a[RTA_PREFSRC] && RTA_PAYLOAD(a[RTA_PREFSRC]) != sizeof(ip_addr)) ||
@@ -843,10 +871,15 @@ nl_parse_route(struct nlmsghdr *h, int scan)
if (a[RTA_OIF])
oif = rta_get_u32(a[RTA_OIF]);
- p = nl_table_map[i->rtm_table]; /* Do we know this table? */
- DBG("KRT: Got %I/%d, type=%d, oif=%d, table=%d, prid=%d, proto=%s\n", dst, i->rtm_dst_len, i->rtm_type, oif, i->rtm_table, i->rtm_protocol, p ? p->p.name : "(none)");
+ if (a[RTA_TABLE])
+ table = rta_get_u32(a[RTA_TABLE]);
+ else
+ table = i->rtm_table;
+
+ p = HASH_FIND(nl_table_map, RTH, table); /* Do we know this table? */
+ DBG("KRT: Got %I/%d, type=%d, oif=%d, table=%d, prid=%d, proto=%s\n", dst, i->rtm_dst_len, i->rtm_type, oif, table, i->rtm_protocol, p ? p->p.name : "(none)");
if (!p)
- SKIP("unknown table %d\n", i->rtm_table);
+ SKIP("unknown table %d\n", table);
#ifdef IPV6
@@ -1186,25 +1219,41 @@ nl_open_async(void)
bug("Netlink: sk_open failed");
}
+
/*
* Interface to the UNIX krt module
*/
-static u8 nl_cf_table[(NL_NUM_TABLES+7) / 8];
-
void
+krt_sys_io_init(void)
+{
+ HASH_INIT(nl_table_map, krt_pool, 6);
+}
+
+int
krt_sys_start(struct krt_proto *p)
{
- nl_table_map[KRT_CF->sys.table_id] = p;
+ struct krt_proto *old = HASH_FIND(nl_table_map, RTH, krt_table_id(p));
+
+ if (old)
+ {
+ log(L_ERR "%s: Kernel table %u already registered by %s",
+ p->p.name, krt_table_id(p), old->p.name);
+ return 0;
+ }
+
+ HASH_INSERT2(nl_table_map, RTH, krt_pool, p);
nl_open();
nl_open_async();
+
+ return 1;
}
void
-krt_sys_shutdown(struct krt_proto *p UNUSED)
+krt_sys_shutdown(struct krt_proto *p)
{
- nl_table_map[KRT_CF->sys.table_id] = NULL;
+ HASH_REMOVE2(nl_table_map, RTH, krt_pool, p);
}
int
@@ -1213,23 +1262,6 @@ krt_sys_reconfigure(struct krt_proto *p UNUSED, struct krt_config *n, struct krt
return n->sys.table_id == o->sys.table_id;
}
-
-void
-krt_sys_preconfig(struct config *c UNUSED)
-{
- bzero(&nl_cf_table, sizeof(nl_cf_table));
-}
-
-void
-krt_sys_postconfig(struct krt_config *x)
-{
- int id = x->sys.table_id;
-
- if (nl_cf_table[id/8] & (1 << (id%8)))
- cf_error("Multiple kernel syncers defined for table #%d", id);
- nl_cf_table[id/8] |= (1 << (id%8));
-}
-
void
krt_sys_init_config(struct krt_config *cf)
{
diff --git a/sysdep/unix/krt.c b/sysdep/unix/krt.c
index 2eab5cb2..49bf9519 100644
--- a/sysdep/unix/krt.c
+++ b/sysdep/unix/krt.c
@@ -77,6 +77,7 @@ krt_io_init(void)
krt_pool = rp_new(&root_pool, "Kernel Syncer");
krt_filter_lp = lp_new(krt_pool, 4080);
init_list(&krt_proto_list);
+ krt_sys_io_init();
}
/*
@@ -1126,7 +1127,11 @@ krt_start(struct proto *P)
krt_learn_init(p);
#endif
- krt_sys_start(p);
+ if (!krt_sys_start(p))
+ {
+ rem_node(&p->krt_node);
+ return PS_START;
+ }
krt_scan_timer_start(p);
@@ -1150,8 +1155,10 @@ krt_shutdown(struct proto *P)
p->ready = 0;
p->initialized = 0;
- krt_sys_shutdown(p);
+ if (p->p.proto_state == PS_START)
+ return PS_DOWN;
+ krt_sys_shutdown(p);
rem_node(&p->krt_node);
return PS_DOWN;
diff --git a/sysdep/unix/krt.h b/sysdep/unix/krt.h
index 9d5d4e8c..aea20102 100644
--- a/sysdep/unix/krt.h
+++ b/sysdep/unix/krt.h
@@ -119,8 +119,9 @@ struct proto_config * krt_init_config(int class);
/* krt sysdep */
+void krt_sys_io_init(void);
void krt_sys_init(struct krt_proto *);
-void krt_sys_start(struct krt_proto *);
+int krt_sys_start(struct krt_proto *);
void krt_sys_shutdown(struct krt_proto *);
int krt_sys_reconfigure(struct krt_proto *p UNUSED, struct krt_config *n, struct krt_config *o);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 02:36:21 +0000