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Kernel: when channel traces, we have to trace the final result

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Otherwise it looks like we are sending too much traffic to netlink
every other while, which is not true. Now we can disambiguate between
in-kernel updates and ignored routes.
This commit is contained in:
Maria Matejka 2024-12-19 12:28:27 +01:00
parent 0a2f92ad20
commit ab74652f96
1 changed files with 11 additions and 3 deletions
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14
sysdep/unix/krt.c
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@ -672,7 +672,7 @@ krt_preexport(struct channel *C, rte *e)
}
static void
krt_rt_notify(struct proto *P, struct channel *ch UNUSED, const net_addr *net,
krt_rt_notify(struct proto *P, struct channel *ch, const net_addr *net,
rte *new, const rte *old)
{
struct krt_proto *p = (struct krt_proto *) P;
@ -688,13 +688,21 @@ krt_rt_notify(struct proto *P, struct channel *ch UNUSED, const net_addr *net,
case KPS_IDLE:
case KPS_PRUNING:
if (new && bmap_test(&p->seen_map, new->id))
/* Already installed and seen in the kernel dump */
return;
if (ch->debug & D_ROUTES)
{
/* Already installed and seen in the kernel dump */
log(L_TRACE "%s.%s: %N already in kernel",
P->name, ch->name, net);
return;
}
/* fall through */
case KPS_SCANNING:
/* Actually replace the route */
krt_replace_rte(p, net, new, old);
if (ch->debug & D_ROUTES)
log(L_TRACE "%s.%s: %N %s kernel",
P->name, ch->name, net, old ? "replaced in" : "added to");
break;
}