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authorEric Dumazet <edumazet@google.com>2015-06-11 09:15:19 -0700
committerDavid S. Miller <davem@davemloft.net>2015-06-11 16:33:11 -0700
commitb5e2c45783aa785cbb195e43d5f0c0c6b228bde4 (patch)
tree41407a1b7f806138bed09918c3d9fe55daf0decb /net
parentf69ad292cfd13aa7ee00847320c6bb9ba2154e87 (diff)
tcp: remove obsolete check in tcp_set_skb_tso_segs()
We had various issues in the past when TCP stack was modifying gso_size/gso_segs while clones were in flight. Commit c52e2421f73 ("tcp: must unclone packets before mangling them") fixed these bugs and added a WARN_ON_ONCE(skb_cloned(skb)); in tcp_set_skb_tso_segs() These bugs are now fixed, and because TCP stack now only sets shinfo->gso_size|segs on the clone itself, the check can be removed. As a result of this change, compiler inlines tcp_set_skb_tso_segs() in tcp_init_tso_segs() Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/tcp_output.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 787f57ff87c4..b1c218df2c85 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -1066,9 +1066,6 @@ static void tcp_queue_skb(struct sock *sk, struct sk_buff *skb)
/* Initialize TSO segments for a packet. */
static void tcp_set_skb_tso_segs(struct sk_buff *skb, unsigned int mss_now)
{
- /* Make sure we own this skb before messing gso_size/gso_segs */
- WARN_ON_ONCE(skb_cloned(skb));
-
if (skb->len <= mss_now || skb->ip_summed == CHECKSUM_NONE) {
/* Avoid the costly divide in the normal
* non-TSO case.

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