diff options
| author | Qingfang Deng <dqfext@gmail.com> | 2025-03-01 16:55:16 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-03-05 04:11:17 +0300 |
| commit | 95d0d094ba26432ec467e2260f4bf553053f1f8f (patch) | |
| tree | 7c3aae6663bbf9ee26d1830ac623483488b86046 /include/linux | |
| parent | 00d66b5fcd4f9d1d8419b7c418575d1f2cd91cb5 (diff) | |
| download | linux-95d0d094ba26432ec467e2260f4bf553053f1f8f.tar.xz | |
ppp: use IFF_NO_QUEUE in virtual interfaces
For PPPoE, PPTP, and PPPoL2TP, the start_xmit() function directly
forwards packets to the underlying network stack and never returns
anything other than 1. So these interfaces do not require a qdisc,
and the IFF_NO_QUEUE flag should be set.
Introduces a direct_xmit flag in struct ppp_channel to indicate when
IFF_NO_QUEUE should be applied. The flag is set in ppp_connect_channel()
for relevant protocols.
While at it, remove the usused latency member from struct ppp_channel.
Signed-off-by: Qingfang Deng <dqfext@gmail.com>
Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://patch.msgid.link/20250301135517.695809-1-dqfext@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/ppp_channel.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/include/linux/ppp_channel.h b/include/linux/ppp_channel.h index 45e6e427ceb8..f73fbea0dbc2 100644 --- a/include/linux/ppp_channel.h +++ b/include/linux/ppp_channel.h @@ -42,8 +42,7 @@ struct ppp_channel { int hdrlen; /* amount of headroom channel needs */ void *ppp; /* opaque to channel */ int speed; /* transfer rate (bytes/second) */ - /* the following is not used at present */ - int latency; /* overhead time in milliseconds */ + bool direct_xmit; /* no qdisc, xmit directly */ }; #ifdef __KERNEL__ |