diff options
| author | Alex Shi <alex.shi@linaro.org> | 2016-11-25 12:50:56 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2016-11-25 12:50:56 +0800 |
| commit | 5497d2d7d543b4b8854700d47a175e157fecbfd1 (patch) | |
| tree | b8453c3e27a46e4322cc7749d4b0a209e8476a92 /net/ipv4/tcp_ipv4.c | |
| parent | 063181a4658b16e6bc0efe24671d5db3097342a4 (diff) | |
| parent | 4eb9a81002485a7abfa53a334dde5bc10328079f (diff) | |
Merge remote-tracking branch 'lts/linux-4.4.y' into linux-linaro-lsk-v4.4
Conflicts:
keep check_object_size in copy_from_user
in arch/sparc/include/asm/uaccess_64.h
Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index b5853cac3269..b58a38eea059 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -1533,6 +1533,21 @@ bool tcp_prequeue(struct sock *sk, struct sk_buff *skb) } EXPORT_SYMBOL(tcp_prequeue); +int tcp_filter(struct sock *sk, struct sk_buff *skb) +{ + struct tcphdr *th = (struct tcphdr *)skb->data; + unsigned int eaten = skb->len; + int err; + + err = sk_filter_trim_cap(sk, skb, th->doff * 4); + if (!err) { + eaten -= skb->len; + TCP_SKB_CB(skb)->end_seq -= eaten; + } + return err; +} +EXPORT_SYMBOL(tcp_filter); + /* * From tcp_input.c */ @@ -1638,8 +1653,10 @@ process: nf_reset(skb); - if (sk_filter(sk, skb)) + if (tcp_filter(sk, skb)) goto discard_and_relse; + th = (const struct tcphdr *)skb->data; + iph = ip_hdr(skb); skb->dev = NULL; |