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| author |   David S. Miller <davem@davemloft.net> | 2021-04-26 12:00:00 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-04-26 12:00:00 -0700 |
| commit | 6876a18d3361e1893187970e1881a1d88d894d3f (patch) | |
| tree | c79dfb4843b82d9346cae1dce68d9b1cfece1715 /net/8021q | |
| parent | Merge branch 'bnxt_en-next' (diff) | |
| parent | bnxt_en: Fix RX consumer index logic in the error path. (diff) | |
| download | linux-dev-6876a18d3361e1893187970e1881a1d88d894d3f.tar.xz linux-dev-6876a18d3361e1893187970e1881a1d88d894d3f.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Diffstat (limited to 'net/8021q')
| -rw-r--r-- | net/8021q/vlan.c | 3 | ||||
| -rw-r--r-- | net/8021q/vlan.h | 4 |
2 files changed, 7 insertions, 0 deletions
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c index 8b644113715e..fb3d3262dc1a 100644 --- a/net/8021q/vlan.c +++ b/net/8021q/vlan.c @@ -71,6 +71,9 @@ static int vlan_group_prealloc_vid(struct vlan_group *vg, if (array == NULL) return -ENOBUFS; + /* paired with smp_rmb() in __vlan_group_get_device() */ + smp_wmb(); + vg->vlan_devices_arrays[pidx][vidx] = array; return 0; } diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h index 953405362795..fa3ad3d4d58c 100644 --- a/net/8021q/vlan.h +++ b/net/8021q/vlan.h @@ -57,6 +57,10 @@ static inline struct net_device *__vlan_group_get_device(struct vlan_group *vg, array = vg->vlan_devices_arrays[pidx] [vlan_id / VLAN_GROUP_ARRAY_PART_LEN]; + + /* paired with smp_wmb() in vlan_group_prealloc_vid() */ + smp_rmb(); + return array ? array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] : NULL; } |