Qingfang Deng c71962f300 ppp: use IFF_NO_QUEUE in virtual interfaces ...

[ Upstream commit 95d0d094ba ]

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>
Stable-dep-of: 543adf0721 ("ppp: annotate data races in ppp_generic")
Signed-off-by: Sasha Levin <sashal@kernel.org>

2026-08-03 11:15:22 +02:00

..

Kconfig

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l2tp_core.c

l2tp: Drop large packets with UDP encap

2026-04-27 07:23:29 -06:00

l2tp_core.h

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l2tp_debugfs.c

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l2tp_eth.c

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l2tp_ip6.c

ipv6: introduce dst_rt6_info() helper

2024-12-14 19:59:35 +01:00

l2tp_ip.c

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l2tp_netlink.c

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l2tp_ppp.c

ppp: use IFF_NO_QUEUE in virtual interfaces

2026-08-03 11:15:22 +02:00

Makefile

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trace.h

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