RFC tun: lockless xmit
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b4 am [email protected]Versions newest first
- v1 RFC Latest2 patches 26 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/2 | tun: don't require serialization lock on txdrivers/ | +1 | 10 replies | |
| 2/2 | tun: don't set a default qdiscdrivers/ | +1 | 9 replies |
Reviews trailers per patch
1 of 2 patches has a Reviewed-by or Acked-by.
| Patch | Eric Dumazet | Jason Wang | Hannes Frederic Sowa |
|---|---|---|---|
| 1/2 | A-b | A-b | A-b |
| 2/2 |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes. Scroll the table sideways for all 3 reviewers.
Cover letter [PATCH RFC 0/2] tun: lockless xmit
This patch series try to remove the need for any lock in the tun device xmit path, significantly improving the forwarding performance when multiple processes are accessing the tun device (i.e. in a nic->bridge->tun->vm scenario).
The lockless xmit is obtained explicitly setting the NETIF_F_LLTX feature bit and removing the default qdisc.
Unlikely most virtual devices, the tun driver has featured a default qdisc for a long period, but it already lost such feature in linux 4.3.
Paolo Abeni (2):
tun: don't require serialization lock on tx
tun: don't set a default qdisc
drivers/net/tun.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
Signature · 1 line
1.8.3.1