1 files changed, 21 insertions, 22 deletions

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 3c23e70885f4..202cf09c4cd4 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -519,26 +519,31 @@ out:
         sock_put(sk);
 }
 
-/* This routine computes an IPv4 TCP checksum. */
-void tcp_v4_send_check(struct sock *sk, int len, struct sk_buff *skb)
+static void __tcp_v4_send_check(struct sk_buff *skb,
+                                __be32 saddr, __be32 daddr)
 {
-        struct inet_sock *inet = inet_sk(sk);
         struct tcphdr *th = tcp_hdr(skb);
 
         if (skb->ip_summed == CHECKSUM_PARTIAL) {
-                th->check = ~tcp_v4_check(len, inet->inet_saddr,
-                                          inet->inet_daddr, 0);
+                th->check = ~tcp_v4_check(skb->len, saddr, daddr, 0);
                 skb->csum_start = skb_transport_header(skb) - skb->head;
                 skb->csum_offset = offsetof(struct tcphdr, check);
         } else {
-                th->check = tcp_v4_check(len, inet->inet_saddr,
-                                         inet->inet_daddr,
+                th->check = tcp_v4_check(skb->len, saddr, daddr,
                                          csum_partial(th,
                                                       th->doff << 2,
                                                       skb->csum));
         }
 }
 
+/* This routine computes an IPv4 TCP checksum. */
+void tcp_v4_send_check(struct sock *sk, struct sk_buff *skb)
+{
+        struct inet_sock *inet = inet_sk(sk);
+
+        __tcp_v4_send_check(skb, inet->inet_saddr, inet->inet_daddr);
+}
+
 int tcp_v4_gso_send_check(struct sk_buff *skb)
 {
         const struct iphdr *iph;
@@ -551,10 +556,8 @@ int tcp_v4_gso_send_check(struct sk_buff *skb)
         th = tcp_hdr(skb);
 
         th->check = 0;
-        th->check = ~tcp_v4_check(skb->len, iph->saddr, iph->daddr, 0);
-        skb->csum_start = skb_transport_header(skb) - skb->head;
-        skb->csum_offset = offsetof(struct tcphdr, check);
         skb->ip_summed = CHECKSUM_PARTIAL;
+        __tcp_v4_send_check(skb, iph->saddr, iph->daddr);
         return 0;
 }
 
@@ -763,13 +766,7 @@ static int tcp_v4_send_synack(struct sock *sk, struct dst_entry *dst,
         skb = tcp_make_synack(sk, dst, req, rvp);
 
         if (skb) {
-                struct tcphdr *th = tcp_hdr(skb);
-
-                th->check = tcp_v4_check(skb->len,
-                                         ireq->loc_addr,
-                                         ireq->rmt_addr,
-                                         csum_partial(th, skb->len,
-                                                      skb->csum));
+                __tcp_v4_send_check(skb, ireq->loc_addr, ireq->rmt_addr);
 
                 err = ip_build_and_send_pkt(skb, sk, ireq->loc_addr,
                                             ireq->rmt_addr,
@@ -894,7 +891,7 @@ int tcp_v4_md5_do_add(struct sock *sk, __be32 addr,
                                 kfree(newkey);
                                 return -ENOMEM;
                         }
-                        sk->sk_route_caps &= ~NETIF_F_GSO_MASK;
+                        sk_nocaps_add(sk, NETIF_F_GSO_MASK);
                 }
                 if (tcp_alloc_md5sig_pool(sk) == NULL) {
                         kfree(newkey);
@@ -1024,7 +1021,7 @@ static int tcp_v4_parse_md5_keys(struct sock *sk, char __user *optval,
                         return -EINVAL;
 
                 tp->md5sig_info = p;
-                sk->sk_route_caps &= ~NETIF_F_GSO_MASK;
+                sk_nocaps_add(sk, NETIF_F_GSO_MASK);
         }
 
         newkey = kmemdup(cmd.tcpm_key, cmd.tcpm_keylen, sk->sk_allocation);
@@ -1289,8 +1286,8 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
                         goto drop_and_release;
 
                 /* Secret recipe starts with IP addresses */
-                *mess++ ^= daddr;
-                *mess++ ^= saddr;
+                *mess++ ^= (__force u32)daddr;
+                *mess++ ^= (__force u32)saddr;
 
                 /* plus variable length Initiator Cookie */
                 c = (u8 *)mess;
@@ -1465,7 +1462,7 @@ struct sock *tcp_v4_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
                 if (newkey != NULL)
                         tcp_v4_md5_do_add(newsk, newinet->inet_daddr,
                                           newkey, key->keylen);
-                newsk->sk_route_caps &= ~NETIF_F_GSO_MASK;
+                sk_nocaps_add(newsk, NETIF_F_GSO_MASK);
         }
 #endif
 
@@ -1675,6 +1672,8 @@ process:
 
         skb->dev = NULL;
 
+        sock_rps_save_rxhash(sk, skb->rxhash);
+
         bh_lock_sock_nested(sk);
         ret = 0;
         if (!sock_owned_by_user(sk)) {