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netfilter: nft_socket: make cgroup match work in input too

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cgroupv2 helper function ignores the already-looked up sk
and uses skb->sk instead.

Just pass sk from the calling function instead; this will
make cgroup matching work for udp and tcp in input even when
edemux did not set skb->sk already.

Fixes: e0bb96db96f8 ("netfilter: nft_socket: add support for cgroupsv2")
Signed-off-by: Florian Westphal <fw@strlen.de>
Tested-by: Topi Miettinen <toiwoton@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Florian Westphal 2022-04-09 13:20:19 +02:00 committed by Pablo Neira Ayuso
parent e8a64bbaaa
commit 05ae2fba82
1 changed files with 3 additions and 4 deletions
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7
net/netfilter/nft_socket.c
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@ -37,12 +37,11 @@ static void nft_socket_wildcard(const struct nft_pktinfo *pkt,
#ifdef CONFIG_SOCK_CGROUP_DATA
static noinline bool
nft_sock_get_eval_cgroupv2(u32 *dest, const struct nft_pktinfo *pkt, u32 level)
nft_sock_get_eval_cgroupv2(u32 *dest, struct sock *sk, const struct nft_pktinfo *pkt, u32 level)
{
struct sock *sk = skb_to_full_sk(pkt->skb);
struct cgroup *cgrp;
if (!sk || !sk_fullsock(sk) || !net_eq(nft_net(pkt), sock_net(sk)))
if (!sk_fullsock(sk))
return false;
cgrp = sock_cgroup_ptr(&sk->sk_cgrp_data);
@ -109,7 +108,7 @@ static void nft_socket_eval(const struct nft_expr *expr,
break;
#ifdef CONFIG_SOCK_CGROUP_DATA
case NFT_SOCKET_CGROUPV2:
if (!nft_sock_get_eval_cgroupv2(dest, pkt, priv->level)) {
if (!nft_sock_get_eval_cgroupv2(dest, sk, pkt, priv->level)) {
regs->verdict.code = NFT_BREAK;
return;
}