leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

net: annotate accesses to dev->gso_max_segs

Browse Source 
dev->gso_max_segs is written under RTNL protection, or when the device is
not yet visible, but is read locklessly.

Add netif_set_gso_max_segs() helper.

Add the READ_ONCE()/WRITE_ONCE() pairs, and use netif_set_gso_max_segs()
where we can to better document what is going on.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2021-11-19 07:43:32 -08:00
committed by David S. Miller
parent 4b66d2161b
commit 6d872df3e3
24 changed files with 37 additions and 29 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
net/core/dev.c
View File

@@ -3396,7 +3396,7 @@ static netdev_features_t gso_features_check(const struct sk_buff *skb,
{
u16 gso_segs = skb_shinfo(skb)->gso_segs;
if (gso_segs > dev->gso_max_segs)
if (gso_segs > READ_ONCE(dev->gso_max_segs))
return features & ~NETIF_F_GSO_MASK;
if (!skb_shinfo(skb)->gso_type) {