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From: "Eric W. Biederman" <ebiederm@xmission.com>
To: David Miller <davem@davemloft.net>
Cc: <netdev@vger.kernel.org>,
	netfilter-devel@vger.kernel.org,
	Stephen Hemminger <stephen@networkplumber.org>,
	Juanjo Ciarlante <jjciarla@raiz.uncu.edu.ar>,
	Wensong Zhang <wensong@linux-vs.org>,
	Simon Horman <horms@verge.net.au>, Julian Anastasov <ja@ssi.bg>,
	Pablo Neira Ayuso <pablo@netfilter.org>,
	Patrick McHardy <kaber@trash.net>,
	Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>,
	Jamal Hadi Salim <jhs@mojatatu.com>,
	Steffen Klassert <steffen.klassert@secunet.com>,
	Herbert Xu <herbert@gondor.apana.org.au>
Subject: [PATCH net-next 06/15] inet netfilter: Prefer state->hook to ops->hooknum
Date: Sun, 14 Jun 2015 22:13:04 -0500	[thread overview]
Message-ID: <1434337993-6248-6-git-send-email-ebiederm@xmission.com> (raw)
In-Reply-To: <87616ppt3h.fsf@x220.int.ebiederm.org>

The values of nf_hook_state.hook and nf_hook_ops.hooknum must be the
same by definition.

We are more likely to access the fields in nf_hook_state over the
fields in nf_hook_ops so with a little luck this results in
fewer cache line misses, and slightly more consistent code.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
---
 net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c |  4 ++--
 net/ipv4/netfilter/nf_defrag_ipv4.c            |  2 +-
 net/ipv4/netfilter/nf_nat_l3proto_ipv4.c       | 14 +++++++-------
 net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c |  4 ++--
 net/ipv6/netfilter/nf_defrag_ipv6_hooks.c      |  4 ++--
 net/ipv6/netfilter/nf_nat_l3proto_ipv6.c       | 14 +++++++-------
 6 files changed, 21 insertions(+), 21 deletions(-)

diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
index c8b7d520af3b..5be04dd8a797 100644
--- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
+++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
@@ -147,7 +147,7 @@ static unsigned int ipv4_conntrack_in(const struct nf_hook_ops *ops,
 				      struct sk_buff *skb,
 				      const struct nf_hook_state *state)
 {
-	return nf_conntrack_in(state->net, PF_INET, ops->hooknum, skb);
+	return nf_conntrack_in(state->net, PF_INET, state->hook, skb);
 }
 
 static unsigned int ipv4_conntrack_local(const struct nf_hook_ops *ops,
@@ -158,7 +158,7 @@ static unsigned int ipv4_conntrack_local(const struct nf_hook_ops *ops,
 	if (skb->len < sizeof(struct iphdr) ||
 	    ip_hdrlen(skb) < sizeof(struct iphdr))
 		return NF_ACCEPT;
-	return nf_conntrack_in(state->net, PF_INET, ops->hooknum, skb);
+	return nf_conntrack_in(state->net, PF_INET, state->hook, skb);
 }
 
 /* Connection tracking may drop packets, but never alters them, so
diff --git a/net/ipv4/netfilter/nf_defrag_ipv4.c b/net/ipv4/netfilter/nf_defrag_ipv4.c
index c88b7d434718..dad108c913eb 100644
--- a/net/ipv4/netfilter/nf_defrag_ipv4.c
+++ b/net/ipv4/netfilter/nf_defrag_ipv4.c
@@ -83,7 +83,7 @@ static unsigned int ipv4_conntrack_defrag(const struct nf_hook_ops *ops,
 	/* Gather fragments. */
 	if (ip_is_fragment(ip_hdr(skb))) {
 		enum ip_defrag_users user =
-			nf_ct_defrag_user(ops->hooknum, skb);
+			nf_ct_defrag_user(state->hook, skb);
 
 		if (nf_ct_ipv4_gather_frags(skb, user))
 			return NF_STOLEN;
diff --git a/net/ipv4/netfilter/nf_nat_l3proto_ipv4.c b/net/ipv4/netfilter/nf_nat_l3proto_ipv4.c
index e59cc05c09e9..82fd5501bce1 100644
--- a/net/ipv4/netfilter/nf_nat_l3proto_ipv4.c
+++ b/net/ipv4/netfilter/nf_nat_l3proto_ipv4.c
@@ -266,7 +266,7 @@ nf_nat_ipv4_fn(const struct nf_hook_ops *ops, struct sk_buff *skb,
 	enum ip_conntrack_info ctinfo;
 	struct nf_conn_nat *nat;
 	/* maniptype == SRC for postrouting. */
-	enum nf_nat_manip_type maniptype = HOOK2MANIP(ops->hooknum);
+	enum nf_nat_manip_type maniptype = HOOK2MANIP(state->hook);
 
 	/* We never see fragments: conntrack defrags on pre-routing
 	 * and local-out, and nf_nat_out protects post-routing.
@@ -295,7 +295,7 @@ nf_nat_ipv4_fn(const struct nf_hook_ops *ops, struct sk_buff *skb,
 	case IP_CT_RELATED_REPLY:
 		if (ip_hdr(skb)->protocol == IPPROTO_ICMP) {
 			if (!nf_nat_icmp_reply_translation(skb, ct, ctinfo,
-							   ops->hooknum))
+							   state->hook))
 				return NF_DROP;
 			else
 				return NF_ACCEPT;
@@ -312,17 +312,17 @@ nf_nat_ipv4_fn(const struct nf_hook_ops *ops, struct sk_buff *skb,
 			if (ret != NF_ACCEPT)
 				return ret;
 
-			if (nf_nat_initialized(ct, HOOK2MANIP(ops->hooknum)))
+			if (nf_nat_initialized(ct, HOOK2MANIP(state->hook)))
 				break;
 
-			ret = nf_nat_alloc_null_binding(ct, ops->hooknum);
+			ret = nf_nat_alloc_null_binding(ct, state->hook);
 			if (ret != NF_ACCEPT)
 				return ret;
 		} else {
 			pr_debug("Already setup manip %s for ct %p\n",
 				 maniptype == NF_NAT_MANIP_SRC ? "SRC" : "DST",
 				 ct);
-			if (nf_nat_oif_changed(ops->hooknum, ctinfo, nat,
+			if (nf_nat_oif_changed(state->hook, ctinfo, nat,
 					       state->out))
 				goto oif_changed;
 		}
@@ -332,11 +332,11 @@ nf_nat_ipv4_fn(const struct nf_hook_ops *ops, struct sk_buff *skb,
 		/* ESTABLISHED */
 		NF_CT_ASSERT(ctinfo == IP_CT_ESTABLISHED ||
 			     ctinfo == IP_CT_ESTABLISHED_REPLY);
-		if (nf_nat_oif_changed(ops->hooknum, ctinfo, nat, state->out))
+		if (nf_nat_oif_changed(state->hook, ctinfo, nat, state->out))
 			goto oif_changed;
 	}
 
-	return nf_nat_packet(ct, ctinfo, ops->hooknum, skb);
+	return nf_nat_packet(ct, ctinfo, state->hook, skb);
 
 oif_changed:
 	nf_ct_kill_acct(ct, ctinfo, skb);
diff --git a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
index 311ade2825db..256a025ceb02 100644
--- a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
@@ -169,7 +169,7 @@ static unsigned int ipv6_conntrack_in(const struct nf_hook_ops *ops,
 				      struct sk_buff *skb,
 				      const struct nf_hook_state *state)
 {
-	return nf_conntrack_in(state->net, PF_INET6, ops->hooknum, skb);
+	return nf_conntrack_in(state->net, PF_INET6, state->hook, skb);
 }
 
 static unsigned int ipv6_conntrack_local(const struct nf_hook_ops *ops,
@@ -181,7 +181,7 @@ static unsigned int ipv6_conntrack_local(const struct nf_hook_ops *ops,
 		net_notice_ratelimited("ipv6_conntrack_local: packet too short\n");
 		return NF_ACCEPT;
 	}
-	return nf_conntrack_in(state->net, PF_INET6, ops->hooknum, skb);
+	return nf_conntrack_in(state->net, PF_INET6, state->hook, skb);
 }
 
 static struct nf_hook_ops ipv6_conntrack_ops[] __read_mostly = {
diff --git a/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c b/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c
index 2346b369248a..8f656cc141f5 100644
--- a/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c
+++ b/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c
@@ -64,7 +64,7 @@ static unsigned int ipv6_defrag(const struct nf_hook_ops *ops,
 		return NF_ACCEPT;
 #endif
 
-	reasm = nf_ct_frag6_gather(skb, nf_ct6_defrag_user(ops->hooknum, skb));
+	reasm = nf_ct_frag6_gather(skb, nf_ct6_defrag_user(state->hook, skb));
 	/* queued */
 	if (reasm == NULL)
 		return NF_STOLEN;
@@ -75,7 +75,7 @@ static unsigned int ipv6_defrag(const struct nf_hook_ops *ops,
 
 	nf_ct_frag6_consume_orig(reasm);
 
-	NF_HOOK_THRESH(NFPROTO_IPV6, ops->hooknum, state->net, state->sk, reasm,
+	NF_HOOK_THRESH(NFPROTO_IPV6, state->hook, state->net, state->sk, reasm,
 		       state->in, state->out,
 		       state->okfn, NF_IP6_PRI_CONNTRACK_DEFRAG + 1);
 
diff --git a/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c b/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c
index e76900e0aa92..2cce12897c50 100644
--- a/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c
+++ b/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c
@@ -272,7 +272,7 @@ nf_nat_ipv6_fn(const struct nf_hook_ops *ops, struct sk_buff *skb,
 	struct nf_conn *ct;
 	enum ip_conntrack_info ctinfo;
 	struct nf_conn_nat *nat;
-	enum nf_nat_manip_type maniptype = HOOK2MANIP(ops->hooknum);
+	enum nf_nat_manip_type maniptype = HOOK2MANIP(state->hook);
 	__be16 frag_off;
 	int hdrlen;
 	u8 nexthdr;
@@ -303,7 +303,7 @@ nf_nat_ipv6_fn(const struct nf_hook_ops *ops, struct sk_buff *skb,
 
 		if (hdrlen >= 0 && nexthdr == IPPROTO_ICMPV6) {
 			if (!nf_nat_icmpv6_reply_translation(skb, ct, ctinfo,
-							     ops->hooknum,
+							     state->hook,
 							     hdrlen))
 				return NF_DROP;
 			else
@@ -321,17 +321,17 @@ nf_nat_ipv6_fn(const struct nf_hook_ops *ops, struct sk_buff *skb,
 			if (ret != NF_ACCEPT)
 				return ret;
 
-			if (nf_nat_initialized(ct, HOOK2MANIP(ops->hooknum)))
+			if (nf_nat_initialized(ct, HOOK2MANIP(state->hook)))
 				break;
 
-			ret = nf_nat_alloc_null_binding(ct, ops->hooknum);
+			ret = nf_nat_alloc_null_binding(ct, state->hook);
 			if (ret != NF_ACCEPT)
 				return ret;
 		} else {
 			pr_debug("Already setup manip %s for ct %p\n",
 				 maniptype == NF_NAT_MANIP_SRC ? "SRC" : "DST",
 				 ct);
-			if (nf_nat_oif_changed(ops->hooknum, ctinfo, nat, state->out))
+			if (nf_nat_oif_changed(state->hook, ctinfo, nat, state->out))
 				goto oif_changed;
 		}
 		break;
@@ -340,11 +340,11 @@ nf_nat_ipv6_fn(const struct nf_hook_ops *ops, struct sk_buff *skb,
 		/* ESTABLISHED */
 		NF_CT_ASSERT(ctinfo == IP_CT_ESTABLISHED ||
 			     ctinfo == IP_CT_ESTABLISHED_REPLY);
-		if (nf_nat_oif_changed(ops->hooknum, ctinfo, nat, state->out))
+		if (nf_nat_oif_changed(state->hook, ctinfo, nat, state->out))
 			goto oif_changed;
 	}
 
-	return nf_nat_packet(ct, ctinfo, ops->hooknum, skb);
+	return nf_nat_packet(ct, ctinfo, state->hook, skb);
 
 oif_changed:
 	nf_ct_kill_acct(ct, ctinfo, skb);
-- 
2.2.1


  parent reply	other threads:[~2015-06-15  3:18 UTC|newest]

Thread overview: 90+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-15  3:07 [PATCH net-next 00/15] Simplify netfilter and network namespaces Eric W. Biederman
2015-06-15  3:12 ` [PATCH net-next 01/15] netfilter: Kill unused copies of RCV_SKB_FAIL Eric W. Biederman
2015-06-15  3:13 ` [PATCH net-next 02/15] netfilter: Pass struct net into the netfilter hooks Eric W. Biederman
2015-06-15  3:13 ` [PATCH net-next 03/15] netfilter: Use nf_hook_state.net Eric W. Biederman
2015-06-15  3:13 ` [PATCH net-next 04/15] ebtables: Simplify the arguments to ebt_do_table Eric W. Biederman
2015-06-15  3:13 ` [PATCH net-next 05/15] inet netfilter: Remove hook from ip6t_do_table, arp_do_table, ipt_do_table Eric W. Biederman
2015-06-15  3:13 ` Eric W. Biederman [this message]
2015-06-15  3:13 ` [PATCH net-next 07/15] nftables: kill nft_pktinfo.ops Eric W. Biederman
2015-06-15  3:13 ` [PATCH net-next 08/15] tc: Simplify em_ipset_match Eric W. Biederman
2015-06-15  3:13 ` [PATCH net-next 09/15] x_tables: Pass struct net in xt_action_param Eric W. Biederman
2015-06-15  3:13 ` [PATCH net-next 10/15] x_tables: Use par->net instead of computing from the passed net devices Eric W. Biederman
2015-06-15  3:13 ` [PATCH net-next 11/15] nftables: Pass struct net in nft_pktinfo Eric W. Biederman
2015-06-15  3:13 ` [PATCH net-next 12/15] nf_tables: Use pkt->net instead of computing net from the passed net_devices Eric W. Biederman
2015-06-15  3:13 ` [PATCH net-next 13/15] nf_conntrack: Add a struct net parameter to l4_pkt_to_tuple Eric W. Biederman
2015-06-15  3:13 ` [PATCH net-next 14/15] ipv4: Pass struct net into ip_defrag and ip_check_defrag Eric W. Biederman
2015-06-15  3:13 ` [PATCH net-next 15/15] ipv6: Pass struct net into nf_ct_frag6_gather Eric W. Biederman
2015-06-15  7:06 ` [PATCH net-next 00/15] Simplify netfilter and network namespaces Pablo Neira Ayuso
2015-06-15 15:06   ` Eric W. Biederman
2015-06-15 15:20     ` Pablo Neira Ayuso
2015-06-16  0:10 ` David Miller
2015-06-16  0:26   ` Eric W. Biederman
2015-06-16  2:14     ` David Miller
2015-06-16 10:32     ` Pablo Neira Ayuso
2015-06-16 21:00       ` Eric W. Biederman
2015-06-17 15:09 ` [PATCH net-next 00/43] Simplify netfilter and network namespaces (take 2) Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 01/43] netfilter: Kill unused copies of RCV_SKB_FAIL Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 02/43] netfilter: Pass struct net into the netfilter hooks Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 03/43] netfilter: Use nf_hook_state.net Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 04/43] ebtables: Simplify the arguments to ebt_do_table Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 05/43] inet netfilter: Remove hook from ip6t_do_table, arp_do_table, ipt_do_table Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 06/43] inet netfilter: Prefer state->hook to ops->hooknum Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 07/43] nftables: kill nft_pktinfo.ops Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 08/43] tc: Simplify em_ipset_match Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 09/43] x_tables: Pass struct net in xt_action_param Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 10/43] x_tables: Use par->net instead of computing from the passed net devices Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 11/43] nftables: Pass struct net in nft_pktinfo Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 12/43] nf_tables: Use pkt->net instead of computing net from the passed net_devices Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 13/43] nf_conntrack: Add a struct net parameter to l4_pkt_to_tuple Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 14/43] ipv4: Pass struct net into ip_defrag and ip_check_defrag Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 15/43] ipv6: Pass struct net into nf_ct_frag6_gather Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 16/43] net: include missing headers in net/net_namespace.h Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 17/43] netfilter: use forward declaration instead of including linux/proc_fs.h Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 18/43] netfilter: don't pull include/linux/netfilter.h from netns headers Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 19/43] ipvs: Read hooknum from state rather than ops->hooknum Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 20/43] netfilter: Pass priv instead of nf_hook_ops to netfilter hooks Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 21/43] netfilter: Add a network namespace Kconfig conflict Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 22/43] netfilter: Add a struct net parameter to nf_register_hook[s] Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 23/43] netfilter: Add a struct net parameter to nf_unregister_hook[s] Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 24/43] netfilter: Make the netfilter hooks per network namespace Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 25/43] netfilter: Make nf_hook_ops just a parameter structure Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 26/43] netfitler: Remove spurios included of netfilter.h Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 27/43] x_tables: Add magical hook registration in the common case Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 28/43] x_tables: Where possible convert to the new hook registration method Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 29/43] x_tables: Kill xt_[un]hook_link Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 30/43] x_tables: Update ip?table_nat to register their hooks in all network namespaces Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 31/43] netfilter: nf_tables: adapt it to pernet hooks Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 32/43] netfilter: ipt_CLUSTERIP: adapt it to support " Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 33/43] netfilter: ebtables: adapt the filter and nat table to " Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 34/43] netfilter: bridge: adapt it " Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 35/43] ipvs: Register netfilter hooks in all network namespaces Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 36/43] netfilter: nf_conntract: " Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 37/43] netfilter: nf_defrag: " Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 38/43] netfilter: synproxy: " Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 39/43] selinux: adapt it to pernet hooks Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 40/43] smack: " Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 41/43] netfilter: Remove the network namespace Kconfig conflict Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 42/43] netfilter bridge: Make the sysctl knobs per network namespace Eric W. Biederman
2015-06-17 15:28   ` [PATCH net-next 43/43] netfilter: Skip unnecessary calls to synchronize_net Eric W. Biederman
2015-06-17 17:20     ` Patrick McHardy
2015-06-17 20:32       ` Eric W. Biederman
2015-06-18 15:49   ` [PATCH net-next 00/43] Simplify netfilter and network namespaces (take 2) Andreas Schultz
2015-06-18 19:40   ` Pablo Neira Ayuso
2015-07-10 23:11   ` [PATCH -next 0/6] Per network namespace netfilter chains Eric W. Biederman
2015-07-10 23:12     ` [PATCH -next 1/6] netfilter: nf_queue: Don't recompute the hook_list head Eric W. Biederman
2015-07-10 23:13     ` [PATCH -next 2/6] netfilter: kill nf_hooks_active Eric W. Biederman
2015-07-10 23:13     ` [PATCH -next 3/6] netfilter: Simply the tests for enabling and disabling the ingress queue hook Eric W. Biederman
2015-07-10 23:14     ` [PATCH -next 4/6] netfilter: Factor out the hook list selection from nf_register_hook Eric W. Biederman
2015-07-10 23:15     ` [PATCH -next 5/6] netfilter: Per network namespace netfilter hooks Eric W. Biederman
2015-07-15 19:00       ` Pablo Neira Ayuso
2015-07-15 20:22         ` Eric W. Biederman
2015-07-10 23:15     ` [PATCH -next 6/6] netfilter: nftables: Only run the nftables chains in the proper netns Eric W. Biederman
2015-07-15 17:20     ` [PATCH -next 0/6] Per network namespace netfilter chains Pablo Neira Ayuso
2015-07-15 20:05       ` Eric W. Biederman
2015-07-16 11:01         ` Pablo Neira Ayuso
2015-06-17 19:38 ` [PATCH net-next 00/15] Simplify netfilter and network namespaces Julian Anastasov
2015-06-17 20:55   ` Eric W. Biederman
2015-06-17 22:01     ` Julian Anastasov
2015-06-18 14:45       ` Eric W. Biederman
2015-06-18 19:21         ` Julian Anastasov
2015-06-19 14:24           ` Eric W. Biederman

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