diff options
| author |   Julian Anastasov <ja@ssi.bg> | 2012-10-08 11:41:17 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2012-10-08 17:42:35 -0400 |
| commit | f8a17175c63fd3e8b573719f7538816f8c96abf4 (patch) | |
| tree | 5f592b7613c48716dc1a88bfd688129d24e62324 | |
| parent | ipv4: fix forwarding for strict source routes (diff) | |
| download | linux-dev-f8a17175c63fd3e8b573719f7538816f8c96abf4.tar.xz linux-dev-f8a17175c63fd3e8b573719f7538816f8c96abf4.zip | |
ipv4: make sure nh_pcpu_rth_output is always allocated
Avoid checking nh_pcpu_rth_output in fast path,
abort fib_info creation on alloc_percpu failure.
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/fib_semantics.c | 2 | ||||
| -rw-r--r-- | net/ipv4/route.c | 3 |
2 files changed, 2 insertions, 3 deletions
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c index 267753060ffc..71b125cd5db1 100644 --- a/net/ipv4/fib_semantics.c +++ b/net/ipv4/fib_semantics.c @@ -840,6 +840,8 @@ struct fib_info *fib_create_info(struct fib_config *cfg) change_nexthops(fi) { nexthop_nh->nh_parent = fi; nexthop_nh->nh_pcpu_rth_output = alloc_percpu(struct rtable __rcu *); + if (!nexthop_nh->nh_pcpu_rth_output) + goto failure; } endfor_nexthops(fi) if (cfg->fc_mx) { diff --git a/net/ipv4/route.c b/net/ipv4/route.c index b90da1bc2704..5b0180f11b20 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -1207,8 +1207,6 @@ static bool rt_cache_route(struct fib_nh *nh, struct rtable *rt) if (rt_is_input_route(rt)) { p = (struct rtable **)&nh->nh_rth_input; } else { - if (!nh->nh_pcpu_rth_output) - goto nocache; p = (struct rtable **)__this_cpu_ptr(nh->nh_pcpu_rth_output); } orig = *p; @@ -1223,7 +1221,6 @@ static bool rt_cache_route(struct fib_nh *nh, struct rtable *rt) * unsuccessful at storing this route into the cache * we really need to set it. */ -nocache: rt->dst.flags |= DST_NOCACHE; ret = false; } |