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Signal problems with route installation to kernel tables.

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This commit is contained in:
Ondrej Zajicek 2011-10-06 22:48:49 +02:00
parent 35c875f0d1
commit 32f95476a8
6 changed files with 37 additions and 23 deletions
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4
nest/route.h
View file

@ -321,6 +321,10 @@ typedef struct rta {
#define RTD_MULTIPATH 5 /* Multipath route (nexthops != NULL) */ #define RTD_MULTIPATH 5 /* Multipath route (nexthops != NULL) */
#define RTD_NONE 6 /* Invalid RTD */ #define RTD_NONE 6 /* Invalid RTD */
/* Flags for net->n.flags, used by kernel syncer */
#define KRF_INSTALLED 0x80 /* This route should be installed in the kernel */
#define KRF_SYNC_ERROR 0x40 /* Error during kernel table synchronization */
#define RTAF_CACHED 1 /* This is a cached rta */ #define RTAF_CACHED 1 /* This is a cached rta */
#define IGP_METRIC_UNKNOWN 0x80000000 /* Default igp_metric used when no other #define IGP_METRIC_UNKNOWN 0x80000000 /* Default igp_metric used when no other

3
nest/rt-table.c
View file

@ -1645,6 +1645,7 @@ rt_show_rte(struct cli *c, byte *ia, rte *e, struct rt_show_data *d, ea_list *tm
byte tm[TM_DATETIME_BUFFER_SIZE], info[256]; byte tm[TM_DATETIME_BUFFER_SIZE], info[256];
rta *a = e->attrs; rta *a = e->attrs;
int primary = (e->net->routes == e); int primary = (e->net->routes == e);
int sync_error = (e->net->n.flags & KRF_SYNC_ERROR);
struct mpnh *nh; struct mpnh *nh;
rt_format_via(e, via); rt_format_via(e, via);
@ -1667,7 +1668,7 @@ rt_show_rte(struct cli *c, byte *ia, rte *e, struct rt_show_data *d, ea_list *tm
else else
bsprintf(info, " (%d)", e->pref); bsprintf(info, " (%d)", e->pref);
cli_printf(c, -1007, "%-18s %s [%s %s%s]%s%s", ia, via, a->proto->name, cli_printf(c, -1007, "%-18s %s [%s %s%s]%s%s", ia, via, a->proto->name,
tm, from, primary ? " *" : "", info); tm, from, primary ? (sync_error ? " !" : " *") : "", info);
for (nh = a->nexthops; nh; nh = nh->next) for (nh = a->nexthops; nh; nh = nh->next)
cli_printf(c, -1007, "\tvia %I on %s weight %d", nh->gw, nh->iface->name, nh->weight + 1); cli_printf(c, -1007, "\tvia %I on %s weight %d", nh->gw, nh->iface->name, nh->weight + 1);
if (d->verbose) if (d->verbose)

2
proto/ospf/packet.c
View file

@ -499,7 +499,7 @@ ospf_err_hook(sock * sk, int err)
{ {
// struct ospf_iface *ifa= (struct ospf_iface *) (sk->data); // struct ospf_iface *ifa= (struct ospf_iface *) (sk->data);
// struct proto *p = (struct proto *) (ifa->oa->po); // struct proto *p = (struct proto *) (ifa->oa->po);
log(L_ERR "OSPF: Socket error: %m", err); log(L_ERR "OSPF: Socket error: %M", err);
} }
void void

27
sysdep/bsd/krt-sock.c
View file

@ -68,7 +68,7 @@ krt_capable(rte *e)
memcpy(p, body, (l > sizeof(*p) ? sizeof(*p) : l));\ memcpy(p, body, (l > sizeof(*p) ? sizeof(*p) : l));\
body += l;} body += l;}
static void static int
krt_sock_send(int cmd, rte *e) krt_sock_send(int cmd, rte *e)
{ {
net *net = e->net; net *net = e->net;
@ -160,7 +160,7 @@ krt_sock_send(int cmd, rte *e)
if(!i->addr) { if(!i->addr) {
log(L_ERR "KRT: interface %s has no IP addess", i->name); log(L_ERR "KRT: interface %s has no IP addess", i->name);
return; return -1;
} }
fill_in_sockaddr(&gate, i->addr->ip, 0); fill_in_sockaddr(&gate, i->addr->ip, 0);
@ -182,22 +182,27 @@ krt_sock_send(int cmd, rte *e)
if ((l = write(rt_sock, (char *)&msg, l)) < 0) { if ((l = write(rt_sock, (char *)&msg, l)) < 0) {
log(L_ERR "KRT: Error sending route %I/%d to kernel", net->n.prefix, net->n.pxlen); log(L_ERR "KRT: Error sending route %I/%d to kernel", net->n.prefix, net->n.pxlen);
return -1;
} }
return 0;
} }
void void
krt_set_notify(struct krt_proto *p UNUSED, net *net, rte *new, rte *old) krt_set_notify(struct krt_proto *p UNUSED, net *n, rte *new, rte *old)
{ {
int err = 0;
if (old) if (old)
{ krt_sock_send(RTM_DELETE, old);
DBG("krt_remove_route(%I/%d)\n", net->n.prefix, net->n.pxlen);
krt_sock_send(RTM_DELETE, old);
}
if (new) if (new)
{ err = krt_sock_send(RTM_ADD, new);
DBG("krt_add_route(%I/%d)\n", net->n.prefix, net->n.pxlen);
krt_sock_send(RTM_ADD, new); if (err < 0)
} n->n.flags |= KRF_SYNC_ERROR;
else
n->n.flags &= ~KRF_SYNC_ERROR;
} }
static int static int

19
sysdep/linux/netlink/netlink.c
View file

@ -198,7 +198,7 @@ nl_exchange(struct nlmsghdr *pkt)
break; break;
log(L_WARN "nl_exchange: Unexpected reply received"); log(L_WARN "nl_exchange: Unexpected reply received");
} }
return nl_error(h); return nl_error(h) ? -1 : 0;
} }
/* /*
@ -616,7 +616,7 @@ nh_bufsize(struct mpnh *nh)
return rv; return rv;
} }
static void static int
nl_send_route(struct krt_proto *p, rte *e, int new) nl_send_route(struct krt_proto *p, rte *e, int new)
{ {
eattr *ea; eattr *ea;
@ -663,7 +663,7 @@ nl_send_route(struct krt_proto *p, rte *e, int new)
break; break;
case RTD_DEVICE: case RTD_DEVICE:
if (!a->iface) if (!a->iface)
return; return -1;
r.r.rtm_type = RTN_UNICAST; r.r.rtm_type = RTN_UNICAST;
nl_add_attr_u32(&r.h, sizeof(r), RTA_OIF, a->iface->index); nl_add_attr_u32(&r.h, sizeof(r), RTA_OIF, a->iface->index);
break; break;
@ -684,17 +684,24 @@ nl_send_route(struct krt_proto *p, rte *e, int new)
bug("krt_capable inconsistent with nl_send_route"); bug("krt_capable inconsistent with nl_send_route");
} }
nl_exchange(&r.h); return nl_exchange(&r.h);
} }
void void
krt_set_notify(struct krt_proto *p, net *n UNUSED, rte *new, rte *old) krt_set_notify(struct krt_proto *p, net *n, rte *new, rte *old)
{ {
int err = 0;
if (old) if (old)
nl_send_route(p, old, 0); nl_send_route(p, old, 0);
if (new) if (new)
nl_send_route(p, new, 1); err = nl_send_route(p, new, 1);
if (err < 0)
n->n.flags |= KRF_SYNC_ERROR;
else
n->n.flags &= ~KRF_SYNC_ERROR;
} }

5
sysdep/unix/krt.h
View file

@ -19,7 +19,7 @@ struct kif_proto;
#include "lib/krt-set.h" #include "lib/krt-set.h"
#include "lib/krt-iface.h" #include "lib/krt-iface.h"
/* Flags stored in net->n.flags */ /* Flags stored in net->n.flags, rest are in nest/route.h */
#define KRF_VERDICT_MASK 0x0f #define KRF_VERDICT_MASK 0x0f
#define KRF_CREATE 0 /* Not seen in kernel table */ #define KRF_CREATE 0 /* Not seen in kernel table */
@ -28,9 +28,6 @@ struct kif_proto;
#define KRF_DELETE 3 /* Should be deleted */ #define KRF_DELETE 3 /* Should be deleted */
#define KRF_IGNORE 4 /* To be ignored */ #define KRF_IGNORE 4 /* To be ignored */
#define KRF_INSTALLED 0x80 /* This route should be installed in the kernel */
#define EA_KRT_PREFSRC EA_CODE(EAP_KRT, 0) #define EA_KRT_PREFSRC EA_CODE(EAP_KRT, 0)
#define EA_KRT_REALM EA_CODE(EAP_KRT, 1) #define EA_KRT_REALM EA_CODE(EAP_KRT, 1)