net: Add skb_unclone() helper function.

[~andy/linux] / net / ipv4 / tcp_output.c

diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 564bf89d9fd39e8cf33f72eaca36f7bc4696bdbf..fd0cea114b5d0d08e785bb65a67e5f904bd95df3 100644 (file)
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -1133,7 +1133,6 @@ static void tcp_queue_skb(struct sock *sk, struct sk_buff *skb)
 static void tcp_set_skb_tso_segs(const struct sock *sk, struct sk_buff *skb,
                                 unsigned int mss_now)
 {
-       skb_shinfo(skb)->gso_type &= SKB_GSO_SHARED_FRAG;
        if (skb->len <= mss_now || !sk_can_gso(sk) ||
            skb->ip_summed == CHECKSUM_NONE) {
                /* Avoid the costly divide in the normal
@@ -1141,10 +1140,11 @@ static void tcp_set_skb_tso_segs(const struct sock *sk, struct sk_buff *skb,
                 */
                skb_shinfo(skb)->gso_segs = 1;
                skb_shinfo(skb)->gso_size = 0;
+               skb_shinfo(skb)->gso_type = 0;
        } else {
                skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(skb->len, mss_now);
                skb_shinfo(skb)->gso_size = mss_now;
-               skb_shinfo(skb)->gso_type |= sk->sk_gso_type;
+               skb_shinfo(skb)->gso_type = sk->sk_gso_type;
        }
 }
 
@@ -1331,7 +1331,7 @@ static void __pskb_trim_head(struct sk_buff *skb, int len)
 /* Remove acked data from a packet in the transmit queue. */
 int tcp_trim_head(struct sock *sk, struct sk_buff *skb, u32 len)
 {
-       if (skb_cloned(skb) && pskb_expand_head(skb, 0, 0, GFP_ATOMIC))
+       if (skb_unclone(skb, GFP_ATOMIC))
                return -ENOMEM;
 
        __pskb_trim_head(skb, len);