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 <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

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);