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| author | Eric Dumazet <edumazet@google.com> | 2025-12-15 21:51:18 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-12-18 13:55:22 +0100 |
| commit | 90c47a1a526c285157be733d4b94d9b1dc339a6f (patch) | |
| tree | 53974939fc9d12780f557f7936a09afde622bd46 /net/ipv4 | |
| parent | 8401fe8638491c0c06157f7b926bed778d0fe402 (diff) | |
| download | linux-90c47a1a526c285157be733d4b94d9b1dc339a6f.tar.gz linux-90c47a1a526c285157be733d4b94d9b1dc339a6f.tar.bz2 linux-90c47a1a526c285157be733d4b94d9b1dc339a6f.zip | |
net: dst: introduce dst->dev_rcu
[ Upstream commit caedcc5b6df1b2e2b5f39079e3369c1d4d5c5f50 ]
Followup of commit 88fe14253e1818 ("net: dst: add four helpers
to annotate data-races around dst->dev").
We want to gradually add explicit RCU protection to dst->dev,
including lockdep support.
Add an union to alias dst->dev_rcu and dst->dev.
Add dst_dev_net_rcu() helper.
Fixes: 4a6ce2b6f2ec ("net: introduce a new function dst_dev_put()")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20250828195823.3958522-2-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 50c127a69cd62 ("Replace three dst_dev() with a lockdep enabled helper.")
Signed-off-by: Gyokhan Kochmarla <gyokhan@amazon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/route.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c index e219bb423c3a..7579001d5b29 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -1030,7 +1030,7 @@ static void __ip_rt_update_pmtu(struct rtable *rt, struct flowi4 *fl4, u32 mtu) return; rcu_read_lock(); - net = dev_net_rcu(dst_dev(dst)); + net = dst_dev_net_rcu(dst); if (mtu < net->ipv4.ip_rt_min_pmtu) { lock = true; mtu = min(old_mtu, net->ipv4.ip_rt_min_pmtu); @@ -1328,7 +1328,7 @@ static unsigned int ipv4_default_advmss(const struct dst_entry *dst) struct net *net; rcu_read_lock(); - net = dev_net_rcu(dst_dev(dst)); + net = dst_dev_net_rcu(dst); advmss = max_t(unsigned int, ipv4_mtu(dst) - header_size, net->ipv4.ip_rt_min_advmss); rcu_read_unlock(); |