Merge tag 'platform-drivers-x86-v4.6-1' of git://git.infradead.org/users/dvhart/linux...

[deliverable/linux.git] / net / ipv4 / tcp_ipv4.c

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 4fdbf4e56797dd6e6084613c7321e46b5c856578..ad450509029bceb74e324c096fbf0e1ab413b7cf 100644 (file)
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -319,8 +319,6 @@ void tcp_req_err(struct sock *sk, u32 seq, bool abort)
        /* ICMPs are not backlogged, hence we cannot get
         * an established socket here.
         */
-       WARN_ON(req->sk);
-
        if (seq != tcp_rsk(req)->snt_isn) {
                NET_INC_STATS_BH(net, LINUX_MIB_OUTOFWINDOWICMPS);
        } else if (abort) {
@@ -642,8 +640,8 @@ static void tcp_v4_send_reset(const struct sock *sk, struct sk_buff *skb)
                 * Incoming packet is checked with md5 hash with finding key,
                 * no RST generated if md5 hash doesn't match.
                 */
-               sk1 = __inet_lookup_listener(net,
-                                            &tcp_hashinfo, ip_hdr(skb)->saddr,
+               sk1 = __inet_lookup_listener(net, &tcp_hashinfo, NULL, 0,
+                                            ip_hdr(skb)->saddr,
                                             th->source, ip_hdr(skb)->daddr,
                                             ntohs(th->source), inet_iif(skb));
                /* don't send rst if it can't find key */
@@ -865,7 +863,6 @@ static void tcp_v4_reqsk_destructor(struct request_sock *req)
        kfree(inet_rsk(req)->opt);
 }
 
-
 #ifdef CONFIG_TCP_MD5SIG
 /*
  * RFC2385 MD5 checksumming requires a mapping of
@@ -1590,7 +1587,8 @@ int tcp_v4_rcv(struct sk_buff *skb)
        TCP_SKB_CB(skb)->sacked  = 0;
 
 lookup:
-       sk = __inet_lookup_skb(&tcp_hashinfo, skb, th->source, th->dest);
+       sk = __inet_lookup_skb(&tcp_hashinfo, skb, __tcp_hdrlen(th), th->source,
+                              th->dest);
        if (!sk)
                goto no_tcp_socket;
 
@@ -1653,7 +1651,7 @@ process:
        sk_incoming_cpu_update(sk);
 
        bh_lock_sock_nested(sk);
-       tcp_sk(sk)->segs_in += max_t(u16, 1, skb_shinfo(skb)->gso_segs);
+       tcp_segs_in(tcp_sk(sk), skb);
        ret = 0;
        if (!sock_owned_by_user(sk)) {
                if (!tcp_prequeue(sk, skb))
@@ -1706,7 +1704,8 @@ do_time_wait:
        switch (tcp_timewait_state_process(inet_twsk(sk), skb, th)) {
        case TCP_TW_SYN: {
                struct sock *sk2 = inet_lookup_listener(dev_net(skb->dev),
-                                                       &tcp_hashinfo,
+                                                       &tcp_hashinfo, skb,
+                                                       __tcp_hdrlen(th),
                                                        iph->saddr, th->source,
                                                        iph->daddr, th->dest,
                                                        inet_iif(skb));
@@ -2398,6 +2397,16 @@ static int __net_init tcp_sk_init(struct net *net)
        net->ipv4.sysctl_tcp_keepalive_probes = TCP_KEEPALIVE_PROBES;
        net->ipv4.sysctl_tcp_keepalive_intvl = TCP_KEEPALIVE_INTVL;
 
+       net->ipv4.sysctl_tcp_syn_retries = TCP_SYN_RETRIES;
+       net->ipv4.sysctl_tcp_synack_retries = TCP_SYNACK_RETRIES;
+       net->ipv4.sysctl_tcp_syncookies = 1;
+       net->ipv4.sysctl_tcp_reordering = TCP_FASTRETRANS_THRESH;
+       net->ipv4.sysctl_tcp_retries1 = TCP_RETR1;
+       net->ipv4.sysctl_tcp_retries2 = TCP_RETR2;
+       net->ipv4.sysctl_tcp_orphan_retries = 0;
+       net->ipv4.sysctl_tcp_fin_timeout = TCP_FIN_TIMEOUT;
+       net->ipv4.sysctl_tcp_notsent_lowat = UINT_MAX;
+
        return 0;
 fail:
        tcp_sk_exit(net);