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| /openbmc/linux/net/ipv4/ |
| H A D | ip_output.c | diff 694aba690de062cf27b28a5e56e7a5a7185b0a1c Sat Mar 31 15:16:25 CDT 2018 Eric Dumazet <edumazet@google.com> ipv4: factorize sk_wmem_alloc updates done by __ip_append_data()
While testing my inet defrag changes, I found that the senders
could spend ~20% of cpu cycles in skb_set_owner_w() updating
sk->sk_wmem_alloc for every fragment they cook.
The solution to this problem is to use alloc_skb() instead
of sock_wmalloc() and manually perform a single sk_wmem_alloc change.
Similar change for IPv6 is provided in following patch.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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