[PATCH] netfilter: nf_tables: fix log/queue expressions for NFPROTO_INET

[PATCH] netfilter: nf_tables: fix log/queue expressions for NFPROTO_INET

[Patrick McHardy]

The log and queue expressions both store the family during ->init() and
use it to deliver packets. This is wrong when used in NFPROTO_INET since
they should both deliver to the actual AF of the packet, not the dummy
NFPROTO_INET.

Use the family from the hook ops to fix this.

Signed-off-by: Patrick McHardy <kaber@trash.net>
---
 net/netfilter/nft_log.c   | 5 +----
 net/netfilter/nft_queue.c | 4 +---
 2 files changed, 2 insertions(+), 7 deletions(-)

diff --git a/net/netfilter/nft_log.c b/net/netfilter/nft_log.c
index 5af7901..26c5154 100644
--- a/net/netfilter/nft_log.c
+++ b/net/netfilter/nft_log.c
@@ -23,7 +23,6 @@ static const char *nft_log_null_prefix = "";
 struct nft_log {
 	struct nf_loginfo	loginfo;
 	char			*prefix;
-	int			family;
 };
 
 static void nft_log_eval(const struct nft_expr *expr,
@@ -33,7 +32,7 @@ static void nft_log_eval(const struct nft_expr *expr,
 	const struct nft_log *priv = nft_expr_priv(expr);
 	struct net *net = dev_net(pkt->in ? pkt->in : pkt->out);
 
-	nf_log_packet(net, priv->family, pkt->ops->hooknum, pkt->skb, pkt->in,
+	nf_log_packet(net, pkt->ops->pf, pkt->ops->hooknum, pkt->skb, pkt->in,
 		      pkt->out, &priv->loginfo, "%s", priv->prefix);
 }
 
@@ -52,8 +51,6 @@ static int nft_log_init(const struct nft_ctx *ctx,
 	struct nf_loginfo *li = &priv->loginfo;
 	const struct nlattr *nla;
 
-	priv->family = ctx->afi->family;
-
 	nla = tb[NFTA_LOG_PREFIX];
 	if (nla != NULL) {
 		priv->prefix = kmalloc(nla_len(nla) + 1, GFP_KERNEL);
diff --git a/net/netfilter/nft_queue.c b/net/netfilter/nft_queue.c
index cbea473..e8ae2f6 100644
--- a/net/netfilter/nft_queue.c
+++ b/net/netfilter/nft_queue.c
@@ -25,7 +25,6 @@ struct nft_queue {
 	u16	queuenum;
 	u16	queues_total;
 	u16	flags;
-	u8	family;
 };
 
 static void nft_queue_eval(const struct nft_expr *expr,
@@ -43,7 +42,7 @@ static void nft_queue_eval(const struct nft_expr *expr,
 			queue = priv->queuenum + cpu % priv->queues_total;
 		} else {
 			queue = nfqueue_hash(pkt->skb, queue,
-					     priv->queues_total, priv->family,
+					     priv->queues_total, pkt->ops->pf,
 					     jhash_initval);
 		}
 	}
@@ -71,7 +70,6 @@ static int nft_queue_init(const struct nft_ctx *ctx,
 		return -EINVAL;
 
 	init_hashrandom(&jhash_initval);
-	priv->family = ctx->afi->family;
 	priv->queuenum = ntohs(nla_get_be16(tb[NFTA_QUEUE_NUM]));
 
 	if (tb[NFTA_QUEUE_TOTAL] != NULL)
-- 
1.8.5.3

Re: [PATCH] netfilter: nf_tables: fix log/queue expressions for NFPROTO_INET

[Pablo Neira Ayuso]

On Thu, Feb 06, 2014 at 09:17:41AM +0000, Patrick McHardy wrote:
> The log and queue expressions both store the family during ->init() and
> use it to deliver packets. This is wrong when used in NFPROTO_INET since
> they should both deliver to the actual AF of the packet, not the dummy
> NFPROTO_INET.
> 
> Use the family from the hook ops to fix this.

Applied, thanks Patrick!