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Message-Id: <1442730220-32458-77-git-send-email-ebiederm@xmission.com>
Date: Sun, 20 Sep 2015 01:23:33 -0500
From: "Eric W. Biederman" <ebiederm@...ssion.com>
To: Pablo Neira Ayuso <pablo@...filter.org>,
David Miller <davem@...emloft.net>,
Simon Horman <horms@...ge.net.au>
Cc: netfilter-devel@...r.kernel.org, <netdev@...r.kernel.org>,
Nicolas Dichtel <nicolas.dichtel@...nd.com>,
lvs-devel@...r.kernel.org
Subject: [PATCH next 77/84] ipvs: Pass ipvs into ip_vs_in_icmp and ip_vs_in_icmp_v6
With ipvs passed into ip_vs_in_icmp and ip_vs_in_icmp_v6
they no longer need to call the hack that is skb_net.
Additionally ipvs_in_icmp no longer needs to call dev_net(skb->dev)
and can use the ipvs->net instead.
Signed-off-by: "Eric W. Biederman" <ebiederm@...ssion.com>
---
net/netfilter/ipvs/ip_vs_core.c | 36 ++++++++++++++----------------------
1 file changed, 14 insertions(+), 22 deletions(-)
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index 3ab96bdc66fd..0304c7cbb786 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -1388,10 +1388,9 @@ ip_vs_try_to_schedule(struct netns_ipvs *ipvs, int af, struct sk_buff *skb,
* Currently handles error types - unreachable, quench, ttl exceeded.
*/
static int
-ip_vs_in_icmp(struct sk_buff *skb, int *related, unsigned int hooknum)
+ip_vs_in_icmp(struct netns_ipvs *ipvs, struct sk_buff *skb, int *related,
+ unsigned int hooknum)
{
- struct net *net = NULL;
- struct netns_ipvs *ipvs;
struct iphdr *iph;
struct icmphdr _icmph, *ic;
struct iphdr _ciph, *cih; /* The ip header contained within the ICMP */
@@ -1440,9 +1439,6 @@ ip_vs_in_icmp(struct sk_buff *skb, int *related, unsigned int hooknum)
if (cih == NULL)
return NF_ACCEPT; /* The packet looks wrong, ignore */
- net = skb_net(skb);
- ipvs = net_ipvs(net);
-
/* Special case for errors for IPIP packets */
ipip = false;
if (cih->protocol == IPPROTO_IPIP) {
@@ -1520,7 +1516,7 @@ ip_vs_in_icmp(struct sk_buff *skb, int *related, unsigned int hooknum)
skb_reset_network_header(skb);
IP_VS_DBG(12, "ICMP for IPIP %pI4->%pI4: mtu=%u\n",
&ip_hdr(skb)->saddr, &ip_hdr(skb)->daddr, mtu);
- ipv4_update_pmtu(skb, dev_net(skb->dev),
+ ipv4_update_pmtu(skb, ipvs->net,
mtu, 0, 0, 0, 0);
/* Client uses PMTUD? */
if (!(frag_off & htons(IP_DF)))
@@ -1575,11 +1571,10 @@ out:
}
#ifdef CONFIG_IP_VS_IPV6
-static int ip_vs_in_icmp_v6(struct sk_buff *skb, int *related,
- unsigned int hooknum, struct ip_vs_iphdr *iph)
+static int ip_vs_in_icmp_v6(struct netns_ipvs *ipvs, struct sk_buff *skb,
+ int *related, unsigned int hooknum,
+ struct ip_vs_iphdr *iph)
{
- struct net *net = NULL;
- struct netns_ipvs *ipvs;
struct icmp6hdr _icmph, *ic;
struct ip_vs_iphdr ciph = {.flags = 0, .fragoffs = 0};/*Contained IP */
struct ip_vs_conn *cp;
@@ -1619,8 +1614,6 @@ static int ip_vs_in_icmp_v6(struct sk_buff *skb, int *related,
if (!ip_vs_fill_iph_skb_icmp(AF_INET6, skb, offset, true, &ciph))
return NF_ACCEPT;
- net = skb_net(skb);
- ipvs = net_ipvs(net);
pd = ip_vs_proto_data_get(ipvs, ciph.protocol);
if (!pd)
return NF_ACCEPT;
@@ -1732,8 +1725,8 @@ ip_vs_in(struct netns_ipvs *ipvs, unsigned int hooknum, struct sk_buff *skb, int
if (af == AF_INET6) {
if (unlikely(iph.protocol == IPPROTO_ICMPV6)) {
int related;
- int verdict = ip_vs_in_icmp_v6(skb, &related, hooknum,
- &iph);
+ int verdict = ip_vs_in_icmp_v6(ipvs, skb, &related,
+ hooknum, &iph);
if (related)
return verdict;
@@ -1742,7 +1735,8 @@ ip_vs_in(struct netns_ipvs *ipvs, unsigned int hooknum, struct sk_buff *skb, int
#endif
if (unlikely(iph.protocol == IPPROTO_ICMP)) {
int related;
- int verdict = ip_vs_in_icmp(skb, &related, hooknum);
+ int verdict = ip_vs_in_icmp(ipvs, skb, &related,
+ hooknum);
if (related)
return verdict;
@@ -1895,17 +1889,16 @@ ip_vs_forward_icmp(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
int r;
- struct netns_ipvs *ipvs;
+ struct netns_ipvs *ipvs = net_ipvs(state->net);
if (ip_hdr(skb)->protocol != IPPROTO_ICMP)
return NF_ACCEPT;
/* ipvs enabled in this netns ? */
- ipvs = net_ipvs(state->net);
if (unlikely(sysctl_backup_only(ipvs) || !ipvs->enable))
return NF_ACCEPT;
- return ip_vs_in_icmp(skb, &r, state->hook);
+ return ip_vs_in_icmp(ipvs, skb, &r, state->hook);
}
#ifdef CONFIG_IP_VS_IPV6
@@ -1914,7 +1907,7 @@ ip_vs_forward_icmp_v6(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
int r;
- struct netns_ipvs *ipvs;
+ struct netns_ipvs *ipvs = net_ipvs(state->net);
struct ip_vs_iphdr iphdr;
ip_vs_fill_iph_skb(AF_INET6, skb, false, &iphdr);
@@ -1922,11 +1915,10 @@ ip_vs_forward_icmp_v6(void *priv, struct sk_buff *skb,
return NF_ACCEPT;
/* ipvs enabled in this netns ? */
- ipvs = net_ipvs(state->net);
if (unlikely(sysctl_backup_only(ipvs) || !ipvs->enable))
return NF_ACCEPT;
- return ip_vs_in_icmp_v6(skb, &r, state->hook, &iphdr);
+ return ip_vs_in_icmp_v6(ipvs, skb, &r, state->hook, &iphdr);
}
#endif
--
2.2.1
--
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