Merge branch 'ipv4-update-rt_flush_dev-and-two-dst-dev-readers'

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Xuanqiang Luo says:

====================
ipv4: update rt_flush_dev() and two dst.dev readers

From: Xuanqiang Luo <xuanqiang.luo@linux.dev>

Patch 1 makes the rt_flush_dev() write to rt->dst.dev use
rcu_assign_pointer(), matching the existing dst_dev_rcu() readers.

Patch 2 makes ip_rt_send_redirect() and ip_rt_get_source() use one
dst.dev snapshot throughout each operation, so a concurrent rt_flush_dev()
update cannot make them use values from two devices.

v2: https://lore.kernel.org/lkml/20260701032434.17500-1-xuanqiang.luo@linux.dev/
v1: https://lore.kernel.org/all/20260630094250.29386-1-xuanqiang.luo@linux.dev/
====================

Link: https://patch.msgid.link/20260708060537.17188-1-xuanqiang.luo@linux.dev
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

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Paolo Abeni 2026-07-21 11:45:54 +02:00

parent b9ecdfda4d 7804eaa057

commit abc435224e

1 changed files with 19 additions and 14 deletions

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net/ipv4/route.c

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