From: Pablo Neira Ayuso <pablo@netfilter.org>
To: netfilter-devel@vger.kernel.org
Subject: [PATCH nf-next 2/5] netfilter: nfnetlink: add nfnetlink_rcv_skb_batch()
Date: Thu, 9 Feb 2017 17:13:47 +0100 [thread overview]
Message-ID: <1486656830-3245-3-git-send-email-pablo@netfilter.org> (raw)
In-Reply-To: <1486656830-3245-1-git-send-email-pablo@netfilter.org>
Add new nfnetlink_rcv_skb_batch() to wrap initial nfnetlink batch
handling.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/nfnetlink.c | 51 ++++++++++++++++++++++++++---------------------
1 file changed, 28 insertions(+), 23 deletions(-)
diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c
index 586212ebba9e..ca645a3b1375 100644
--- a/net/netfilter/nfnetlink.c
+++ b/net/netfilter/nfnetlink.c
@@ -436,12 +436,35 @@ static void nfnetlink_rcv_batch(struct sk_buff *skb, struct nlmsghdr *nlh,
kfree_skb(skb);
}
-static void nfnetlink_rcv(struct sk_buff *skb)
+static void nfnetlink_rcv_skb_batch(struct sk_buff *skb, struct nlmsghdr *nlh)
{
- struct nlmsghdr *nlh = nlmsg_hdr(skb);
+ struct nfgenmsg *nfgenmsg;
u16 res_id;
int msglen;
+ msglen = NLMSG_ALIGN(nlh->nlmsg_len);
+ if (msglen > skb->len)
+ msglen = skb->len;
+
+ if (nlh->nlmsg_len < NLMSG_HDRLEN ||
+ skb->len < NLMSG_HDRLEN + sizeof(struct nfgenmsg))
+ return;
+
+ nfgenmsg = nlmsg_data(nlh);
+ skb_pull(skb, msglen);
+ /* Work around old nft using host byte order */
+ if (nfgenmsg->res_id == NFNL_SUBSYS_NFTABLES)
+ res_id = NFNL_SUBSYS_NFTABLES;
+ else
+ res_id = ntohs(nfgenmsg->res_id);
+
+ nfnetlink_rcv_batch(skb, nlh, res_id);
+}
+
+static void nfnetlink_rcv(struct sk_buff *skb)
+{
+ struct nlmsghdr *nlh = nlmsg_hdr(skb);
+
if (nlh->nlmsg_len < NLMSG_HDRLEN ||
skb->len < nlh->nlmsg_len)
return;
@@ -451,28 +474,10 @@ static void nfnetlink_rcv(struct sk_buff *skb)
return;
}
- if (nlh->nlmsg_type == NFNL_MSG_BATCH_BEGIN) {
- struct nfgenmsg *nfgenmsg;
-
- msglen = NLMSG_ALIGN(nlh->nlmsg_len);
- if (msglen > skb->len)
- msglen = skb->len;
-
- if (nlh->nlmsg_len < NLMSG_HDRLEN ||
- skb->len < NLMSG_HDRLEN + sizeof(struct nfgenmsg))
- return;
-
- nfgenmsg = nlmsg_data(nlh);
- skb_pull(skb, msglen);
- /* Work around old nft using host byte order */
- if (nfgenmsg->res_id == NFNL_SUBSYS_NFTABLES)
- res_id = NFNL_SUBSYS_NFTABLES;
- else
- res_id = ntohs(nfgenmsg->res_id);
- nfnetlink_rcv_batch(skb, nlh, res_id);
- } else {
+ if (nlh->nlmsg_type == NFNL_MSG_BATCH_BEGIN)
+ nfnetlink_rcv_skb_batch(skb, nlh);
+ else
netlink_rcv_skb(skb, &nfnetlink_rcv_msg);
- }
}
#ifdef CONFIG_MODULES
--
2.1.4
next prev parent reply other threads:[~2017-02-09 16:14 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-09 16:13 [PATCH nf-next 0/5] nf_tables: rule deletion by description Pablo Neira Ayuso
2017-02-09 16:13 ` [PATCH nf-next 1/5] netfilter: nfnetlink: get rid of u_intX_t types Pablo Neira Ayuso
2017-02-09 16:13 ` Pablo Neira Ayuso [this message]
2017-02-09 16:13 ` [PATCH nf-next 3/5] netfilter: nfnetlink: allow to check for generation ID Pablo Neira Ayuso
2017-02-09 16:13 ` [PATCH nf-next 4/5] netfilter: nf_tables: add check_genid to the nfnetlink subsystem Pablo Neira Ayuso
2017-02-09 16:13 ` [PATCH nf-next 5/5] netfilter: nf_tables: add NFTA_RULE_ID attribute Pablo Neira Ayuso
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