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 <[email protected]> Signed-off-by: David S. Miller <[email protected]>
jbg · Jun 25, 2019 · 20c6731 · 20c6731
1 parent 77cf8ed
commit 20c6731
Showing 1 changed file with 1 addition and 1 deletion.
diff --git 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);