Netdev Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Pablo Neira Ayuso <pablo@netfilter.org>
To: netfilter-devel@vger.kernel.org
Cc: davem@davemloft.net, netdev@vger.kernel.org, kuba@kernel.org
Subject: [PATCH net 5/9] netfilter: nfnetlink_hook: missing chain family
Date: Fri,  6 Aug 2021 17:11:45 +0200	[thread overview]
Message-ID: <20210806151149.6356-6-pablo@netfilter.org> (raw)
In-Reply-To: <20210806151149.6356-1-pablo@netfilter.org>

The family is relevant for pseudo-families like NFPROTO_INET
otherwise the user needs to rely on the hook function name to
differentiate it from NFPROTO_IPV4 and NFPROTO_IPV6 names.

Add nfnl_hook_chain_desc_attributes instead of using the existing
NFTA_CHAIN_* attributes, since these do not provide a family number.

Fixes: e2cf17d3774c ("netfilter: add new hook nfnl subsystem")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
 include/uapi/linux/netfilter/nfnetlink_hook.h | 9 +++++++++
 net/netfilter/nfnetlink_hook.c                | 8 ++++++--
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/include/uapi/linux/netfilter/nfnetlink_hook.h b/include/uapi/linux/netfilter/nfnetlink_hook.h
index 912ec60b26b0..bbcd285b22e1 100644
--- a/include/uapi/linux/netfilter/nfnetlink_hook.h
+++ b/include/uapi/linux/netfilter/nfnetlink_hook.h
@@ -43,6 +43,15 @@ enum nfnl_hook_chain_info_attributes {
 };
 #define NFNLA_HOOK_INFO_MAX (__NFNLA_HOOK_INFO_MAX - 1)
 
+enum nfnl_hook_chain_desc_attributes {
+	NFNLA_CHAIN_UNSPEC,
+	NFNLA_CHAIN_TABLE,
+	NFNLA_CHAIN_FAMILY,
+	NFNLA_CHAIN_NAME,
+	__NFNLA_CHAIN_MAX,
+};
+#define NFNLA_CHAIN_MAX (__NFNLA_CHAIN_MAX - 1)
+
 /**
  * enum nfnl_hook_chaintype - chain type
  *
diff --git a/net/netfilter/nfnetlink_hook.c b/net/netfilter/nfnetlink_hook.c
index ca453c61dbdf..e0ff2973fd14 100644
--- a/net/netfilter/nfnetlink_hook.c
+++ b/net/netfilter/nfnetlink_hook.c
@@ -89,11 +89,15 @@ static int nfnl_hook_put_nft_chain_info(struct sk_buff *nlskb,
 	if (!nest2)
 		goto cancel_nest;
 
-	ret = nla_put_string(nlskb, NFTA_CHAIN_TABLE, chain->table->name);
+	ret = nla_put_string(nlskb, NFNLA_CHAIN_TABLE, chain->table->name);
 	if (ret)
 		goto cancel_nest;
 
-	ret = nla_put_string(nlskb, NFTA_CHAIN_NAME, chain->name);
+	ret = nla_put_string(nlskb, NFNLA_CHAIN_NAME, chain->name);
+	if (ret)
+		goto cancel_nest;
+
+	ret = nla_put_u8(nlskb, NFNLA_CHAIN_FAMILY, chain->table->family);
 	if (ret)
 		goto cancel_nest;
 
-- 
2.20.1


  parent reply	other threads:[~2021-08-06 15:12 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-06 15:11 [PATCH net 0/9,v2] Netfilter fixes for net Pablo Neira Ayuso
2021-08-06 15:11 ` [PATCH net 1/9] netfilter: ipset: Limit the maximal range of consecutive elements to add/delete Pablo Neira Ayuso
2021-08-06 15:11 ` [PATCH net 2/9] netfilter: nf_conntrack_bridge: Fix memory leak when error Pablo Neira Ayuso
2021-08-06 15:11 ` [PATCH net 3/9] netfilter: conntrack: collect all entries in one cycle Pablo Neira Ayuso
2021-08-06 15:11 ` [PATCH net 4/9] netfilter: nfnetlink_hook: strip off module name from hookfn Pablo Neira Ayuso
2021-08-06 15:11 ` Pablo Neira Ayuso [this message]
2021-08-06 15:11 ` [PATCH net 6/9] netfilter: nfnetlink_hook: use the sequence number of the request message Pablo Neira Ayuso
2021-08-06 15:11 ` [PATCH net 7/9] netfilter: nfnetlink_hook: Use same family as " Pablo Neira Ayuso
2021-08-06 15:11 ` [PATCH net 8/9] netfilter: conntrack: remove offload_pickup sysctl again Pablo Neira Ayuso
2021-08-06 15:11 ` [PATCH net 9/9] netfilter: nfnetlink_hook: translate inet ingress to netdev Pablo Neira Ayuso
2021-08-06 22:33 ` [PATCH net 0/9,v2] Netfilter fixes for net Jakub Kicinski
  -- strict thread matches above, loose matches on Subject: below --
2021-08-06 11:51 [PATCH net 0/9] " Pablo Neira Ayuso
2021-08-06 11:52 ` [PATCH net 5/9] netfilter: nfnetlink_hook: missing chain family Pablo Neira Ayuso

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210806151149.6356-6-pablo@netfilter.org \
    --to=pablo@netfilter.org \
    --cc=davem@davemloft.net \
    --cc=kuba@kernel.org \
    --cc=netdev@vger.kernel.org \
    --cc=netfilter-devel@vger.kernel.org \
    --subject='Re: [PATCH net 5/9] netfilter: nfnetlink_hook: missing chain family' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).