1 files changed, 21 insertions, 22 deletions

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 3c23e70885f..202cf09c4cd 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)) {