* [RFC] batman-adv: make mc_forwarding atomic
@ 2022-02-08 7:19 Sven Eckelmann
0 siblings, 0 replies; only message in thread
From: Sven Eckelmann @ 2022-02-08 7:19 UTC (permalink / raw)
To: linus.luessing; +Cc: b.a.t.m.a.n
From: Eric Dumazet <edumazet@google.com>
This fixes minor data-races in ip6_mc_input() and
batadv_mcast_mla_rtr_flags_softif_get_ipv6()
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net-next commit 145c7a793838 ("ipv6: make mc_forwarding atomic")
This still needs compat code - does anyone have ideas?
net/batman-adv/multicast.c | 2 +-
5 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c
index f4004cf0ff6f..9f311fddfaf9 100644
--- a/net/batman-adv/multicast.c
+++ b/net/batman-adv/multicast.c
@@ -134,7 +134,7 @@ static u8 batadv_mcast_mla_rtr_flags_softif_get_ipv6(struct net_device *dev)
{
struct inet6_dev *in6_dev = __in6_dev_get(dev);
- if (in6_dev && in6_dev->cnf.mc_forwarding)
+ if (in6_dev && atomic_read(&in6_dev->cnf.mc_forwarding))
return BATADV_NO_FLAGS;
else
return BATADV_MCAST_WANT_NO_RTR6;
--
2.30.2
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2022-02-08 7:19 [RFC] batman-adv: make mc_forwarding atomic Sven Eckelmann
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