diff options
author | John Stultz <john.stultz@linaro.org> | 2013-04-08 10:45:54 -0700 |
---|---|---|
committer | John Stultz <john.stultz@linaro.org> | 2013-04-08 10:45:54 -0700 |
commit | 698cb5d58f5498273e71d4797c8b3353535c8de6 (patch) | |
tree | 20f459c3e673a04c82ba2d529fc14efd28c1dcb5 /net/ipv4/inet_fragment.c | |
parent | 97c64b5e2132e104a8c25026319b239fce7463f4 (diff) | |
parent | 31880c37c11e28cb81c70757e38392b42e695dc6 (diff) |
Merge remote-tracking branch 'linus/master' into linaro-android-3.9-experimentaltracking-linaro-android-3.9-llct-20130408.0
Update to 3.9-rc6
Conflicts:
arch/arm/mm/cache-l2x0.c
drivers/hid/hid-magicmouse.c
Diffstat (limited to 'net/ipv4/inet_fragment.c')
-rw-r--r-- | net/ipv4/inet_fragment.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c index 245ae078a07f..f4fd23de9b13 100644 --- a/net/ipv4/inet_fragment.c +++ b/net/ipv4/inet_fragment.c @@ -21,6 +21,7 @@ #include <linux/rtnetlink.h> #include <linux/slab.h> +#include <net/sock.h> #include <net/inet_frag.h> static void inet_frag_secret_rebuild(unsigned long dummy) @@ -277,6 +278,7 @@ struct inet_frag_queue *inet_frag_find(struct netns_frags *nf, __releases(&f->lock) { struct inet_frag_queue *q; + int depth = 0; hlist_for_each_entry(q, &f->hash[hash], list) { if (q->net == nf && f->match(q, key)) { @@ -284,9 +286,25 @@ struct inet_frag_queue *inet_frag_find(struct netns_frags *nf, read_unlock(&f->lock); return q; } + depth++; } read_unlock(&f->lock); - return inet_frag_create(nf, f, key); + if (depth <= INETFRAGS_MAXDEPTH) + return inet_frag_create(nf, f, key); + else + return ERR_PTR(-ENOBUFS); } EXPORT_SYMBOL(inet_frag_find); + +void inet_frag_maybe_warn_overflow(struct inet_frag_queue *q, + const char *prefix) +{ + static const char msg[] = "inet_frag_find: Fragment hash bucket" + " list length grew over limit " __stringify(INETFRAGS_MAXDEPTH) + ". Dropping fragment.\n"; + + if (PTR_ERR(q) == -ENOBUFS) + LIMIT_NETDEBUG(KERN_WARNING "%s%s", prefix, msg); +} +EXPORT_SYMBOL(inet_frag_maybe_warn_overflow); |