diff options
| author | Eric Dumazet <[email protected]> | 2017-09-19 05:14:24 -0700 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2017-09-19 15:20:22 -0700 |
| commit | bffa72cf7f9df842f0016ba03586039296b4caaf (patch) | |
| tree | e27752d22b270c0c607ff8025e44dd8f884aa1cb /tools/perf/scripts/python | |
| parent | a38b2fa37e2e2ac897e7159738c5763ee65ee405 (diff) | |
net: sk_buff rbnode reorg
skb->rbnode shares space with skb->next, skb->prev and skb->tstamp
Current uses (TCP receive ofo queue and netem) need to save/restore
tstamp, while skb->dev is either NULL (TCP) or a constant for a given
queue (netem).
Since we plan using an RB tree for TCP retransmit queue to speedup SACK
processing with large BDP, this patch exchanges skb->dev and
skb->tstamp.
This saves some overhead in both TCP and netem.
v2: removes the swtstamp field from struct tcp_skb_cb
Signed-off-by: Eric Dumazet <[email protected]>
Cc: Soheil Hassas Yeganeh <[email protected]>
Cc: Wei Wang <[email protected]>
Cc: Willem de Bruijn <[email protected]>
Acked-by: Soheil Hassas Yeganeh <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions