diff options
| author | Greg Kroah-Hartman <gregkh@google.com> | 2019-06-17 20:30:38 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@google.com> | 2019-06-17 20:30:38 +0200 |
| commit | 15b29f5df10905a71491d2737ea423cd4458bc3b (patch) | |
| tree | 579ee36abd7dd2a222ced3aac1a4cf33a327a832 /net/ipv4/tcp_output.c | |
| parent | 7b41aee921e20b15fb9f12d5042386ed2416f786 (diff) | |
| parent | 33790f2eda7393d422927078597a33475792c82c (diff) | |
Merge 4.4.182 into android-4.4-p
Changes in 4.4.182
tcp: limit payload size of sacked skbs
tcp: tcp_fragment() should apply sane memory limits
tcp: add tcp_min_snd_mss sysctl
tcp: enforce tcp_min_snd_mss in tcp_mtu_probing()
Linux 4.4.182
Change-Id: Idb237d729dbdbfc2d0e41544b19f0d5d6547644b
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Diffstat (limited to 'net/ipv4/tcp_output.c')
| -rw-r--r-- | net/ipv4/tcp_output.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 9ada5e4a28e5..6f7303d51274 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -1161,6 +1161,11 @@ int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len, if (nsize < 0) nsize = 0; + if (unlikely((sk->sk_wmem_queued >> 1) > sk->sk_sndbuf)) { + NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPWQUEUETOOBIG); + return -ENOMEM; + } + if (skb_unclone(skb, gfp)) return -ENOMEM; @@ -1327,8 +1332,7 @@ static inline int __tcp_mtu_to_mss(struct sock *sk, int pmtu) mss_now -= icsk->icsk_ext_hdr_len; /* Then reserve room for full set of TCP options and 8 bytes of data */ - if (mss_now < 48) - mss_now = 48; + mss_now = max(mss_now, sock_net(sk)->ipv4.sysctl_tcp_min_snd_mss); return mss_now; } |