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| author | Eric Dumazet <edumazet@google.com> | 2024-02-28 13:54:34 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2024-03-01 08:42:32 +0000 |
| commit | a8fbd4d90720b6c930661ed593d54aba77cec3c2 (patch) | |
| tree | 99beb09ddf95a483c71a5795c6485d46cee031c9 /net/ipv6 | |
| parent | e248948a4471c6efca19f7c5e657b30ee67a6485 (diff) | |
| download | linux-a8fbd4d90720b6c930661ed593d54aba77cec3c2.tar.gz linux-a8fbd4d90720b6c930661ed593d54aba77cec3c2.tar.bz2 linux-a8fbd4d90720b6c930661ed593d54aba77cec3c2.zip | |
ipv6: annotate data-races around devconf->proxy_ndp
devconf->proxy_ndp can be read and written locklessly,
add appropriate annotations.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/addrconf.c | 3 | ||||
| -rw-r--r-- | net/ipv6/ip6_output.c | 2 | ||||
| -rw-r--r-- | net/ipv6/ndisc.c | 5 |
3 files changed, 6 insertions, 4 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 82b8d90afb6a..409aa5ddb856 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -561,7 +561,8 @@ static int inet6_netconf_fill_devconf(struct sk_buff *skb, int ifindex, goto nla_put_failure; #endif if ((all || type == NETCONFA_PROXY_NEIGH) && - nla_put_s32(skb, NETCONFA_PROXY_NEIGH, devconf->proxy_ndp) < 0) + nla_put_s32(skb, NETCONFA_PROXY_NEIGH, + READ_ONCE(devconf->proxy_ndp)) < 0) goto nla_put_failure; if ((all || type == NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN) && diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 444be8c84cc5..f08af3f4e54f 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -552,7 +552,7 @@ int ip6_forward(struct sk_buff *skb) } /* XXX: idev->cnf.proxy_ndp? */ - if (net->ipv6.devconf_all->proxy_ndp && + if (READ_ONCE(net->ipv6.devconf_all->proxy_ndp) && pneigh_lookup(&nd_tbl, net, &hdr->daddr, skb->dev, 0)) { int proxied = ip6_forward_proxy_check(skb); if (proxied > 0) { diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index f6430db24940..4114918f12c8 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -904,7 +904,8 @@ have_ifp: if (ipv6_chk_acast_addr(net, dev, &msg->target) || (READ_ONCE(idev->cnf.forwarding) && - (net->ipv6.devconf_all->proxy_ndp || idev->cnf.proxy_ndp) && + (READ_ONCE(net->ipv6.devconf_all->proxy_ndp) || + READ_ONCE(idev->cnf.proxy_ndp)) && (is_router = pndisc_is_router(&msg->target, dev)) >= 0)) { if (!(NEIGH_CB(skb)->flags & LOCALLY_ENQUEUED) && skb->pkt_type != PACKET_HOST && @@ -1101,7 +1102,7 @@ static enum skb_drop_reason ndisc_recv_na(struct sk_buff *skb) */ if (lladdr && !memcmp(lladdr, dev->dev_addr, dev->addr_len) && READ_ONCE(net->ipv6.devconf_all->forwarding) && - net->ipv6.devconf_all->proxy_ndp && + READ_ONCE(net->ipv6.devconf_all->proxy_ndp) && pneigh_lookup(&nd_tbl, net, &msg->target, dev, 0)) { /* XXX: idev->cnf.proxy_ndp */ goto out; |