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| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2016-09-25 23:23:57 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2016-09-25 23:34:19 +0200 |
| commit | f20fbc0717f9f007c94b2641134b19228d0ce9ed (patch) | |
| tree | 1404248ebbec552a3fb7928b75322b65d74de1bd /include/net/sock.h | |
| parent | netfilter: nf_log: get rid of XT_LOG_* macros (diff) | |
| parent | Merge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirshe... (diff) | |
| download | linux-f20fbc0717f9f007c94b2641134b19228d0ce9ed.tar.gz linux-f20fbc0717f9f007c94b2641134b19228d0ce9ed.zip | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Conflicts:
net/netfilter/core.c
net/netfilter/nf_tables_netdev.c
Resolve two conflicts before pull request for David's net-next tree:
1) Between c73c24849011 ("netfilter: nf_tables_netdev: remove redundant
ip_hdr assignment") from the net tree and commit ddc8b6027ad0
("netfilter: introduce nft_set_pktinfo_{ipv4, ipv6}_validate()").
2) Between e8bffe0cf964 ("net: Add _nf_(un)register_hooks symbols") and
Aaron Conole's patches to replace list_head with single linked list.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include/net/sock.h')
| -rw-r--r-- | include/net/sock.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index c797c57f4d9f..ebf75db08e06 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -1339,6 +1339,16 @@ static inline void sk_mem_uncharge(struct sock *sk, int size) if (!sk_has_account(sk)) return; sk->sk_forward_alloc += size; + + /* Avoid a possible overflow. + * TCP send queues can make this happen, if sk_mem_reclaim() + * is not called and more than 2 GBytes are released at once. + * + * If we reach 2 MBytes, reclaim 1 MBytes right now, there is + * no need to hold that much forward allocation anyway. + */ + if (unlikely(sk->sk_forward_alloc >= 1 << 21)) + __sk_mem_reclaim(sk, 1 << 20); } static inline void sk_wmem_free_skb(struct sock *sk, struct sk_buff *skb) |