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path: root/net/ipv4/tcp_ipv4.c
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Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
-rw-r--r--net/ipv4/tcp_ipv4.c17
1 files changed, 9 insertions, 8 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 1e0ce4d7b..1eef463f8 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1364,7 +1364,7 @@ static struct sock *tcp_v4_hnd_req(struct sock *sk, struct sk_buff *skb)
req = inet_csk_search_req(sk, th->source, iph->saddr, iph->daddr);
if (req) {
nsk = tcp_check_req(sk, skb, req, false);
- if (!nsk)
+ if (!nsk || nsk == sk)
reqsk_put(req);
return nsk;
}
@@ -1418,7 +1418,7 @@ int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb)
return 0;
}
- if (skb->len < tcp_hdrlen(skb) || tcp_checksum_complete(skb))
+ if (tcp_checksum_complete(skb))
goto csum_err;
#ifdef CONFIG_TCP_STEALTH
@@ -1653,6 +1653,7 @@ process:
skb->dev = NULL;
bh_lock_sock_nested(sk);
+ tcp_sk(sk)->segs_in += max_t(u16, 1, skb_shinfo(skb)->gso_segs);
ret = 0;
if (!sock_owned_by_user(sk)) {
if (!tcp_prequeue(sk, skb))
@@ -1673,7 +1674,7 @@ no_tcp_socket:
if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb))
goto discard_it;
- if (skb->len < (th->doff << 2) || tcp_checksum_complete(skb)) {
+ if (tcp_checksum_complete(skb)) {
csum_error:
TCP_INC_STATS_BH(net, TCP_MIB_CSUMERRORS);
bad_packet:
@@ -1697,10 +1698,6 @@ do_time_wait:
goto discard_it;
}
- if (skb->len < (th->doff << 2)) {
- inet_twsk_put(inet_twsk(sk));
- goto bad_packet;
- }
if (tcp_checksum_complete(skb)) {
inet_twsk_put(inet_twsk(sk));
goto csum_error;
@@ -1829,6 +1826,7 @@ void tcp_v4_destroy_sock(struct sock *sk)
/* If socket is aborted during connect operation */
tcp_free_fastopen_req(tp);
+ tcp_saved_syn_free(tp);
sk_sockets_allocated_dec(sk);
sock_release_memcg(sk);
@@ -2437,12 +2435,15 @@ static int __net_init tcp_sk_init(struct net *net)
goto fail;
*per_cpu_ptr(net->ipv4.tcp_sk, cpu) = sk;
}
+
net->ipv4.sysctl_tcp_ecn = 2;
+ net->ipv4.sysctl_tcp_ecn_fallback = 1;
+
net->ipv4.sysctl_tcp_base_mss = TCP_BASE_MSS;
net->ipv4.sysctl_tcp_probe_threshold = TCP_PROBE_THRESHOLD;
net->ipv4.sysctl_tcp_probe_interval = TCP_PROBE_INTERVAL;
- return 0;
+ return 0;
fail:
tcp_sk_exit(net);