From: Pablo Neira Ayuso <pablo@netfilter.org>
To: netfilter-devel@vger.kernel.org
Cc: davem@davemloft.net, netdev@vger.kernel.org
Subject: [PATCH 06/27] netfilter: nf_tables_offload: add __nft_offload_get_chain function
Date: Fri, 13 Sep 2019 13:30:41 +0200 [thread overview]
Message-ID: <20190913113102.15776-7-pablo@netfilter.org> (raw)
In-Reply-To: <20190913113102.15776-1-pablo@netfilter.org>
From: wenxu <wenxu@ucloud.cn>
Add __nft_offload_get_chain function to get basechain from device. This
function requires that caller holds the per-netns nftables mutex. This
patch implicitly fixes missing offload flags check and proper mutex from
nft_indr_block_cb().
Fixes: 9a32669fecfb ("netfilter: nf_tables_offload: support indr block call")
Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/nf_tables_offload.c | 52 +++++++++++++++++++++++++--------------
1 file changed, 34 insertions(+), 18 deletions(-)
diff --git a/net/netfilter/nf_tables_offload.c b/net/netfilter/nf_tables_offload.c
index 239cb781ad13..e200491ec672 100644
--- a/net/netfilter/nf_tables_offload.c
+++ b/net/netfilter/nf_tables_offload.c
@@ -369,33 +369,49 @@ int nft_flow_rule_offload_commit(struct net *net)
return err;
}
-static void nft_indr_block_cb(struct net_device *dev,
- flow_indr_block_bind_cb_t *cb, void *cb_priv,
- enum flow_block_command command)
+static struct nft_chain *__nft_offload_get_chain(struct net_device *dev)
{
+ struct nft_base_chain *basechain;
struct net *net = dev_net(dev);
const struct nft_table *table;
- const struct nft_chain *chain;
+ struct nft_chain *chain;
- list_for_each_entry_rcu(table, &net->nft.tables, list) {
+ list_for_each_entry(table, &net->nft.tables, list) {
if (table->family != NFPROTO_NETDEV)
continue;
- list_for_each_entry_rcu(chain, &table->chains, list) {
- if (nft_is_base_chain(chain)) {
- struct nft_base_chain *basechain;
-
- basechain = nft_base_chain(chain);
- if (!strncmp(basechain->dev_name, dev->name,
- IFNAMSIZ)) {
- nft_indr_block_ing_cmd(dev, basechain,
- cb, cb_priv,
- command);
- return;
- }
- }
+ list_for_each_entry(chain, &table->chains, list) {
+ if (!nft_is_base_chain(chain) ||
+ !(chain->flags & NFT_CHAIN_HW_OFFLOAD))
+ continue;
+
+ basechain = nft_base_chain(chain);
+ if (strncmp(basechain->dev_name, dev->name, IFNAMSIZ))
+ continue;
+
+ return chain;
}
}
+
+ return NULL;
+}
+
+static void nft_indr_block_cb(struct net_device *dev,
+ flow_indr_block_bind_cb_t *cb, void *cb_priv,
+ enum flow_block_command cmd)
+{
+ struct net *net = dev_net(dev);
+ struct nft_chain *chain;
+
+ mutex_lock(&net->nft.commit_mutex);
+ chain = __nft_offload_get_chain(dev);
+ if (chain) {
+ struct nft_base_chain *basechain;
+
+ basechain = nft_base_chain(chain);
+ nft_indr_block_ing_cmd(dev, basechain, cb, cb_priv, cmd);
+ }
+ mutex_unlock(&net->nft.commit_mutex);
}
static struct flow_indr_block_ing_entry block_ing_entry = {
--
2.11.0
next prev parent reply other threads:[~2019-09-13 11:32 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-13 11:30 [PATCH 00/27] Netfilter updates for net-next Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 01/27] netfilter: nf_tables: Fix an Oops in nf_tables_updobj() error handling Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 02/27] netfilter: nf_tables_offload: avoid excessive stack usage Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 03/27] netfilter: nf_tables_offload: move indirect flow_block callback logic to core Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 04/27] netfilter: nft_synproxy: add synproxy stateful object support Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 05/27] netfilter: nft_{fwd,dup}_netdev: add offload support Pablo Neira Ayuso
2019-09-13 11:30 ` Pablo Neira Ayuso [this message]
2019-09-13 11:30 ` [PATCH 07/27] netfilter: nf_tables_offload: refactor the nft_flow_offload_chain function Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 08/27] netfilter: nf_tables_offload: refactor the nft_flow_offload_rule function Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 09/27] netfilter: nf_tables_offload: remove rules when the device unregisters Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 10/27] netfilter: fix include guards Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 11/27] netfilter: fix coding-style errors Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 12/27] netfilter: ip_tables: remove unused function declarations Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 13/27] netfilter: inline xt_hashlimit, ebt_802_3 and xt_physdev headers Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 14/27] netfilter: update include directives Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 15/27] netfilter: remove nf_conntrack_icmpv6.h header Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 16/27] netfilter: move inline nf_ip6_ext_hdr() function to a more appropriate header Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 17/27] netfilter: synproxy: move code between headers Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 18/27] netfilter: move nf_bridge_frag_data struct definition to a more appropriate header Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 19/27] netfilter: conntrack: use consistent style when defining inline functions Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 20/27] netfilter: replace defined(CONFIG...) || defined(CONFIG...MODULE) with IS_ENABLED(CONFIG...) Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 21/27] netfilter: conntrack: wrap two inline functions in config checks Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 22/27] netfilter: br_netfilter: update stub br_nf_pre_routing_ipv6 parameter to `void *priv` Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 23/27] netfilter: conntrack: move code to linux/nf_conntrack_common.h Pablo Neira Ayuso
2019-09-13 11:30 ` [PATCH 24/27] netfilter: conntrack: remove CONFIG_NF_CONNTRACK check from nf_conntrack_acct.h Pablo Neira Ayuso
2019-09-13 11:31 ` [PATCH 25/27] netfilter: remove CONFIG_NETFILTER checks from headers Pablo Neira Ayuso
2019-09-13 11:31 ` [PATCH 26/27] netfilter: conntrack: remove CONFIG_NF_CONNTRACK checks from nf_conntrack_zones.h Pablo Neira Ayuso
2019-09-13 11:31 ` [PATCH 27/27] netfilter: conntrack: remove two unused functions from nf_conntrack_timestamp.h Pablo Neira Ayuso
2019-09-13 13:40 ` [PATCH 00/27] Netfilter updates for net-next David Miller
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=20190913113102.15776-7-pablo@netfilter.org \
--to=pablo@netfilter.org \
--cc=davem@davemloft.net \
--cc=netdev@vger.kernel.org \
--cc=netfilter-devel@vger.kernel.org \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
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).