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Commit c4ead4c5 authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

tcp: tso_fragment() might avoid GFP_ATOMIC 



We can pass a gfp argument to tso_fragment() and avoid GFP_ATOMIC
allocations sometimes.

Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9618e2ff

net/ipv4/tcp_output.c

+3 −3
Original line number Diff line number Diff line
@@ -1460,7 +1460,7 @@ int tcp_may_send_now(struct sock *sk) 
 * packet has never been sent out before (and thus is not cloned).

 */

static int tso_fragment(struct sock *sk, struct sk_buff *skb, unsigned int len,

			unsigned int mss_now)

			unsigned int mss_now, gfp_t gfp)

{

	struct sk_buff *buff;

	int nlen = skb->len - len;
@@ -1470,7 +1470,7 @@ static int tso_fragment(struct sock *sk, struct sk_buff *skb, unsigned int len, 
	if (skb->len != skb->data_len)

		return tcp_fragment(sk, skb, len, mss_now);



	buff = sk_stream_alloc_skb(sk, 0, GFP_ATOMIC);

	buff = sk_stream_alloc_skb(sk, 0, gfp);

	if (unlikely(buff == NULL))

		return -ENOMEM;
@@ -1768,7 +1768,7 @@ static int tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle, 
						    cwnd_quota);



		if (skb->len > limit &&

		    unlikely(tso_fragment(sk, skb, limit, mss_now)))

		    unlikely(tso_fragment(sk, skb, limit, mss_now, gfp)))

			break;



		TCP_SKB_CB(skb)->when = tcp_time_stamp;