tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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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>

authored by

Jon Maloy and committed by
David S. Miller 20c67312 77cf8edb

+1 -1
+1 -1
net/tipc/link.c
··· 1125 1125 continue; 1126 1126 TIPC_SKB_CB(skb)->nxt_retr = jiffies + TIPC_BC_RETR_LIM; 1127 1127 } 1128 - _skb = __pskb_copy(skb, MIN_H_SIZE, GFP_ATOMIC); 1128 + _skb = __pskb_copy(skb, LL_MAX_HEADER + MIN_H_SIZE, GFP_ATOMIC); 1129 1129 if (!_skb) 1130 1130 return 0; 1131 1131 hdr = buf_msg(_skb);