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[78.154.15.182]) by smtp.gmail.com with UTF8SMTPSA id ffacd0b85a97d-48442d6e826sm4430021f8f.19.2026.09.01.05.07.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Sep 2026 05:07:37 -0700 (PDT) From: Nikolay Aleksandrov To: netdev@vger.kernel.org Cc: idosch@nvidia.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, bridge@lists.linux.dev, Nikolay Aleksandrov Subject: [PATCH net-next 2/9] net: bridge: vlan: annotate lockless pvid use Date: Tue, 1 Sep 2026 15:07:14 +0300 Message-ID: <20260901120721.747908-3-razor@blackwall.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260901120721.747908-1-razor@blackwall.org> References: <20260901120721.747908-1-razor@blackwall.org> Precedence: bulk X-Mailing-List: bridge@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Use READ/WRITE_ONCE to annotate lockless pvid use, br_get_pvid() is the helper that should be used outside of the bridge vlan code. The rest of the vlan places that access pvid directly all have rtnl. Signed-off-by: Nikolay Aleksandrov --- net/bridge/br_private.h | 2 +- net/bridge/br_vlan.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 5b2c22ad669e..0efd2e79e255 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -1687,7 +1687,7 @@ static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg) if (!vg) return 0; - return vg->pvid; + return READ_ONCE(vg->pvid); } static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid) diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c index 2ae6ffb23399..a53054fcc093 100644 --- a/net/bridge/br_vlan.c +++ b/net/bridge/br_vlan.c @@ -41,7 +41,7 @@ static void __vlan_add_pvid(struct net_bridge_vlan_group *vg, return; br_vlan_set_pvid_state(vg, v->state); - vg->pvid = v->vid; + WRITE_ONCE(vg->pvid, v->vid); } static void __vlan_delete_pvid(struct net_bridge_vlan_group *vg, u16 vid) @@ -49,7 +49,7 @@ static void __vlan_delete_pvid(struct net_bridge_vlan_group *vg, u16 vid) if (vg->pvid != vid) return; - vg->pvid = 0; + WRITE_ONCE(vg->pvid, 0); } /* Update the BRIDGE_VLAN_INFO_PVID and BRIDGE_VLAN_INFO_UNTAGGED flags of @v. -- 2.47.3