From 20c67312946dd0e152f6c65d6fa93c1b0eedcd80 Mon Sep 17 00:00:00 2001 From: Jon Maloy Date: Tue, 25 Jun 2019 18:08:13 +0200 Subject: [PATCH] tipc: eliminate unnecessary skb expansion during retransmission We increase the allocated headroom for the buffer copies to be retransmitted. This eliminates the need for the lower stack levels (UDP/IP/L2) to expand the headroom in order to add their own headers. Signed-off-by: Jon Maloy Signed-off-by: David S. Miller --- net/tipc/link.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/tipc/link.c b/net/tipc/link.c index af50b53e75d9..aa79bf8ac0aa 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -1125,7 +1125,7 @@ static int tipc_link_bc_retrans(struct tipc_link *l, struct tipc_link *r, continue; TIPC_SKB_CB(skb)->nxt_retr = jiffies + TIPC_BC_RETR_LIM; } - _skb = __pskb_copy(skb, MIN_H_SIZE, GFP_ATOMIC); + _skb = __pskb_copy(skb, LL_MAX_HEADER + MIN_H_SIZE, GFP_ATOMIC); if (!_skb) return 0; hdr = buf_msg(_skb);