From: Pablo Neira Ayuso <pablo@netfilter.org>
To: netfilter-devel@vger.kernel.org
Cc: davem@davemloft.net, netdev@vger.kernel.org
Subject: [PATCH 12/17] netfilter: nft_meta: move cgroup handling to helper
Date: Mon, 30 Dec 2019 12:21:38 +0100 [thread overview]
Message-ID: <20191230112143.121708-13-pablo@netfilter.org> (raw)
In-Reply-To: <20191230112143.121708-1-pablo@netfilter.org>
From: Florian Westphal <fw@strlen.de>
Reduce size of main eval function.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/nft_meta.c | 20 +++++++++++++++-----
1 file changed, 15 insertions(+), 5 deletions(-)
diff --git a/net/netfilter/nft_meta.c b/net/netfilter/nft_meta.c
index 1b32440ec2e6..3fca1c3ec361 100644
--- a/net/netfilter/nft_meta.c
+++ b/net/netfilter/nft_meta.c
@@ -161,6 +161,20 @@ nft_meta_get_eval_skugid(enum nft_meta_keys key,
return true;
}
+#ifdef CONFIG_CGROUP_NET_CLASSID
+static noinline bool
+nft_meta_get_eval_cgroup(u32 *dest, const struct nft_pktinfo *pkt)
+{
+ struct sock *sk = skb_to_full_sk(pkt->skb);
+
+ if (!sk || !sk_fullsock(sk) || !net_eq(nft_net(pkt), sock_net(sk)))
+ return false;
+
+ *dest = sock_cgroup_classid(&sk->sk_cgrp_data);
+ return true;
+}
+#endif
+
void nft_meta_get_eval(const struct nft_expr *expr,
struct nft_regs *regs,
const struct nft_pktinfo *pkt)
@@ -168,7 +182,6 @@ void nft_meta_get_eval(const struct nft_expr *expr,
const struct nft_meta *priv = nft_expr_priv(expr);
const struct sk_buff *skb = pkt->skb;
const struct net_device *in = nft_in(pkt), *out = nft_out(pkt);
- struct sock *sk;
u32 *dest = ®s->data[priv->dreg];
switch (priv->key) {
@@ -258,11 +271,8 @@ void nft_meta_get_eval(const struct nft_expr *expr,
break;
#ifdef CONFIG_CGROUP_NET_CLASSID
case NFT_META_CGROUP:
- sk = skb_to_full_sk(skb);
- if (!sk || !sk_fullsock(sk) ||
- !net_eq(nft_net(pkt), sock_net(sk)))
+ if (!nft_meta_get_eval_cgroup(dest, pkt))
goto err;
- *dest = sock_cgroup_classid(&sk->sk_cgrp_data);
break;
#endif
case NFT_META_PRANDOM: {
--
2.11.0
next prev parent reply other threads:[~2019-12-30 11:22 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-30 11:21 [PATCH 00/17] Netfilter updates for net-next Pablo Neira Ayuso
2019-12-30 11:21 ` [PATCH 01/17] netfilter: Clean up unnecessary #ifdef Pablo Neira Ayuso
2019-12-30 11:21 ` [PATCH 02/17] netfilter: Document ingress hook Pablo Neira Ayuso
2019-12-30 11:21 ` [PATCH 03/17] netfilter: nft_tunnel: no need to call htons() when dumping ports Pablo Neira Ayuso
2019-12-30 11:21 ` [PATCH 04/17] netfilter: nft_tunnel: add the missing ERSPAN_VERSION nla_policy Pablo Neira Ayuso
2019-12-30 11:21 ` [PATCH 05/17] netfilter: nft_tunnel: also dump ERSPAN_VERSION Pablo Neira Ayuso
2019-12-30 11:21 ` [PATCH 06/17] netfilter: nft_tunnel: also dump OPTS_ERSPAN/VXLAN Pablo Neira Ayuso
2019-12-30 11:21 ` [PATCH 07/17] netfilter: nft_tunnel: add the missing nla_nest_cancel() Pablo Neira Ayuso
2019-12-30 11:21 ` [PATCH 08/17] netfilter: conntrack: remove two export symbols Pablo Neira Ayuso
2019-12-30 11:21 ` [PATCH 09/17] netfilter: nft_meta: move time handling to helper Pablo Neira Ayuso
2019-12-30 11:21 ` [PATCH 10/17] netfilter: nft_meta: move pkttype " Pablo Neira Ayuso
2019-12-30 11:21 ` [PATCH 11/17] netfilter: nft_meta: move sk uid/git " Pablo Neira Ayuso
2019-12-30 11:21 ` Pablo Neira Ayuso [this message]
2019-12-30 11:21 ` [PATCH 13/17] netfilter: nft_meta: move interface kind " Pablo Neira Ayuso
2019-12-30 11:21 ` [PATCH 14/17] netfilter: nft_meta: move all interface related keys " Pablo Neira Ayuso
2019-12-30 11:21 ` [PATCH 15/17] netfilter: nft_meta: place prandom handling in a helper Pablo Neira Ayuso
2019-12-30 11:21 ` [PATCH 16/17] netfilter: nft_meta: place rtclassid " Pablo Neira Ayuso
2019-12-30 11:21 ` [PATCH 17/17] netfilter: nft_meta: add support for slave device ifindex matching Pablo Neira Ayuso
2019-12-30 22:29 ` [PATCH 00/17] Netfilter updates for net-next David Miller
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