diff options
Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
-rw-r--r-- | net/ipv4/tcp_ipv4.c | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index de47038afdf0..0952d4b772e7 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -423,7 +423,7 @@ EXPORT_SYMBOL(tcp_req_err); * */ -void tcp_v4_err(struct sk_buff *icmp_skb, u32 info) +int tcp_v4_err(struct sk_buff *icmp_skb, u32 info) { const struct iphdr *iph = (const struct iphdr *)icmp_skb->data; struct tcphdr *th = (struct tcphdr *)(icmp_skb->data + (iph->ihl << 2)); @@ -446,20 +446,21 @@ void tcp_v4_err(struct sk_buff *icmp_skb, u32 info) inet_iif(icmp_skb), 0); if (!sk) { __ICMP_INC_STATS(net, ICMP_MIB_INERRORS); - return; + return -ENOENT; } if (sk->sk_state == TCP_TIME_WAIT) { inet_twsk_put(inet_twsk(sk)); - return; + return 0; } seq = ntohl(th->seq); - if (sk->sk_state == TCP_NEW_SYN_RECV) - return tcp_req_err(sk, seq, - type == ICMP_PARAMETERPROB || - type == ICMP_TIME_EXCEEDED || - (type == ICMP_DEST_UNREACH && - (code == ICMP_NET_UNREACH || - code == ICMP_HOST_UNREACH))); + if (sk->sk_state == TCP_NEW_SYN_RECV) { + tcp_req_err(sk, seq, type == ICMP_PARAMETERPROB || + type == ICMP_TIME_EXCEEDED || + (type == ICMP_DEST_UNREACH && + (code == ICMP_NET_UNREACH || + code == ICMP_HOST_UNREACH))); + return 0; + } bh_lock_sock(sk); /* If too many ICMPs get dropped on busy @@ -541,7 +542,6 @@ void tcp_v4_err(struct sk_buff *icmp_skb, u32 info) icsk->icsk_rto = inet_csk_rto_backoff(icsk, TCP_RTO_MAX); skb = tcp_rtx_queue_head(sk); - BUG_ON(!skb); tcp_mstamp_refresh(tp); delta_us = (u32)(tp->tcp_mstamp - tcp_skb_timestamp_us(skb)); @@ -613,6 +613,7 @@ void tcp_v4_err(struct sk_buff *icmp_skb, u32 info) out: bh_unlock_sock(sk); sock_put(sk); + return 0; } void __tcp_v4_send_check(struct sk_buff *skb, __be32 saddr, __be32 daddr) @@ -2573,8 +2574,8 @@ static int __net_init tcp_sk_init(struct net *net) * which are too large can cause TCP streams to be bursty. */ net->ipv4.sysctl_tcp_tso_win_divisor = 3; - /* Default TSQ limit of four TSO segments */ - net->ipv4.sysctl_tcp_limit_output_bytes = 262144; + /* Default TSQ limit of 16 TSO segments */ + net->ipv4.sysctl_tcp_limit_output_bytes = 16 * 65536; /* rfc5961 challenge ack rate limiting */ net->ipv4.sysctl_tcp_challenge_ack_limit = 1000; net->ipv4.sysctl_tcp_min_tso_segs = 2; |