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Date: Thu, 18 Jun 2015 09:45:07 -0500
From: ebiederm@...ssion.com (Eric W. Biederman)
To: Julian Anastasov <ja@....bg>
Cc: netdev@...r.kernel.org, netfilter-devel@...r.kernel.org
Subject: Re: [PATCH net-next 00/15] Simplify netfilter and network namespaces
Cc' list trimmed as this is not longer about the original patch
submission.
Julian Anastasov <ja@....bg> writes:
> Hello,
>
> On Wed, 17 Jun 2015, Eric W. Biederman wrote:
>
>> p.s. I do have my patch that I can toss in your direction if you are
>> interested.
>
> Of course... I'll be able to check it after 8 hours...
My incremental patch for ipvs on top of everything else I have pushed
out looks like this:
From: "Eric W. Biederman" <ebiederm@...ssion.com>
Date: Fri, 12 Jun 2015 18:34:12 -0500
Subject: [PATCH] ipvs: Pass struct net down to where it is needed and used
Pass struct net down to where it is used and stop guessing
which network namespace should be used.
Signed-off-by: "Eric W. Biederman" <ebiederm@...ssion.com>
---
include/net/ip_vs.h | 45 +++---------
net/netfilter/ipvs/ip_vs_conn.c | 11 ++-
net/netfilter/ipvs/ip_vs_core.c | 118 ++++++++++++++------------------
net/netfilter/ipvs/ip_vs_ftp.c | 8 +--
net/netfilter/ipvs/ip_vs_proto_ah_esp.c | 9 ++-
net/netfilter/ipvs/ip_vs_proto_sctp.c | 5 +-
net/netfilter/ipvs/ip_vs_proto_tcp.c | 8 +--
net/netfilter/ipvs/ip_vs_proto_udp.c | 5 +-
net/netfilter/ipvs/ip_vs_xmit.c | 51 ++++++++------
net/netfilter/xt_ipvs.c | 2 +-
10 files changed, 108 insertions(+), 154 deletions(-)
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index 4e3731ee4eac..a556d14cff70 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -35,37 +35,6 @@ static inline struct netns_ipvs *net_ipvs(struct net* net)
return net->ipvs;
}
-/* Get net ptr from skb in traffic cases
- * use skb_sknet when call is from userland (ioctl or netlink)
- */
-static inline struct net *skb_net(const struct sk_buff *skb)
-{
-#ifdef CONFIG_NET_NS
-#ifdef CONFIG_IP_VS_DEBUG
- /*
- * This is used for debug only.
- * Start with the most likely hit
- * End with BUG
- */
- if (likely(skb->dev && dev_net(skb->dev)))
- return dev_net(skb->dev);
- if (skb_dst(skb) && skb_dst(skb)->dev)
- return dev_net(skb_dst(skb)->dev);
- WARN(skb->sk, "Maybe skb_sknet should be used in %s() at line:%d\n",
- __func__, __LINE__);
- if (likely(skb->sk && sock_net(skb->sk)))
- return sock_net(skb->sk);
- pr_err("There is no net ptr to find in the skb in %s() line:%d\n",
- __func__, __LINE__);
- BUG();
-#else
- return dev_net(skb->dev ? : skb_dst(skb)->dev);
-#endif
-#else
- return &init_net;
-#endif
-}
-
static inline struct net *skb_sknet(const struct sk_buff *skb)
{
#ifdef CONFIG_NET_NS
@@ -441,19 +410,19 @@ struct ip_vs_protocol {
void (*exit_netns)(struct net *net, struct ip_vs_proto_data *pd);
- int (*conn_schedule)(int af, struct sk_buff *skb,
+ int (*conn_schedule)(struct net *net, int af, struct sk_buff *skb,
struct ip_vs_proto_data *pd,
int *verdict, struct ip_vs_conn **cpp,
struct ip_vs_iphdr *iph);
struct ip_vs_conn *
- (*conn_in_get)(int af,
+ (*conn_in_get)(struct net *net, int af,
const struct sk_buff *skb,
const struct ip_vs_iphdr *iph,
int inverse);
struct ip_vs_conn *
- (*conn_out_get)(int af,
+ (*conn_out_get)(struct net *net, int af,
const struct sk_buff *skb,
const struct ip_vs_iphdr *iph,
int inverse);
@@ -1179,13 +1148,15 @@ static inline void ip_vs_conn_fill_param(struct net *net, int af, int protocol,
struct ip_vs_conn *ip_vs_conn_in_get(const struct ip_vs_conn_param *p);
struct ip_vs_conn *ip_vs_ct_in_get(const struct ip_vs_conn_param *p);
-struct ip_vs_conn * ip_vs_conn_in_get_proto(int af, const struct sk_buff *skb,
+struct ip_vs_conn * ip_vs_conn_in_get_proto(struct net *net, int af,
+ const struct sk_buff *skb,
const struct ip_vs_iphdr *iph,
int inverse);
struct ip_vs_conn *ip_vs_conn_out_get(const struct ip_vs_conn_param *p);
-struct ip_vs_conn * ip_vs_conn_out_get_proto(int af, const struct sk_buff *skb,
+struct ip_vs_conn * ip_vs_conn_out_get_proto(struct net *net, int af,
+ const struct sk_buff *skb,
const struct ip_vs_iphdr *iph,
int inverse);
@@ -1215,7 +1186,7 @@ void ip_vs_conn_expire_now(struct ip_vs_conn *cp);
const char *ip_vs_state_name(__u16 proto, int state);
-void ip_vs_tcp_conn_listen(struct net *net, struct ip_vs_conn *cp);
+void ip_vs_tcp_conn_listen(struct ip_vs_conn *cp);
int ip_vs_check_template(struct ip_vs_conn *ct);
void ip_vs_random_dropentry(struct net *net);
int ip_vs_conn_init(void);
diff --git a/net/netfilter/ipvs/ip_vs_conn.c b/net/netfilter/ipvs/ip_vs_conn.c
index b0f7b626b56d..4deb4a0d2247 100644
--- a/net/netfilter/ipvs/ip_vs_conn.c
+++ b/net/netfilter/ipvs/ip_vs_conn.c
@@ -314,12 +314,11 @@ struct ip_vs_conn *ip_vs_conn_in_get(const struct ip_vs_conn_param *p)
}
static int
-ip_vs_conn_fill_param_proto(int af, const struct sk_buff *skb,
+ip_vs_conn_fill_param_proto(struct net *net, int af, const struct sk_buff *skb,
const struct ip_vs_iphdr *iph,
int inverse, struct ip_vs_conn_param *p)
{
__be16 _ports[2], *pptr;
- struct net *net = skb_net(skb);
pptr = frag_safe_skb_hp(skb, iph->len, sizeof(_ports), _ports, iph);
if (pptr == NULL)
@@ -335,12 +334,12 @@ ip_vs_conn_fill_param_proto(int af, const struct sk_buff *skb,
}
struct ip_vs_conn *
-ip_vs_conn_in_get_proto(int af, const struct sk_buff *skb,
+ip_vs_conn_in_get_proto(struct net *net, int af, const struct sk_buff *skb,
const struct ip_vs_iphdr *iph, int inverse)
{
struct ip_vs_conn_param p;
- if (ip_vs_conn_fill_param_proto(af, skb, iph, inverse, &p))
+ if (ip_vs_conn_fill_param_proto(net, af, skb, iph, inverse, &p))
return NULL;
return ip_vs_conn_in_get(&p);
@@ -439,12 +438,12 @@ struct ip_vs_conn *ip_vs_conn_out_get(const struct ip_vs_conn_param *p)
}
struct ip_vs_conn *
-ip_vs_conn_out_get_proto(int af, const struct sk_buff *skb,
+ip_vs_conn_out_get_proto(struct net *net, int af, const struct sk_buff *skb,
const struct ip_vs_iphdr *iph, int inverse)
{
struct ip_vs_conn_param p;
- if (ip_vs_conn_fill_param_proto(af, skb, iph, inverse, &p))
+ if (ip_vs_conn_fill_param_proto(net, af, skb, iph, inverse, &p))
return NULL;
return ip_vs_conn_out_get(&p);
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index 2ea140c9a81c..4dec27e135cc 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -112,7 +112,7 @@ static inline void
ip_vs_in_stats(struct ip_vs_conn *cp, struct sk_buff *skb)
{
struct ip_vs_dest *dest = cp->dest;
- struct netns_ipvs *ipvs = net_ipvs(skb_net(skb));
+ struct netns_ipvs *ipvs = net_ipvs(ip_vs_conn_net(cp));
if (dest && (dest->flags & IP_VS_DEST_F_AVAILABLE)) {
struct ip_vs_cpu_stats *s;
@@ -146,7 +146,7 @@ static inline void
ip_vs_out_stats(struct ip_vs_conn *cp, struct sk_buff *skb)
{
struct ip_vs_dest *dest = cp->dest;
- struct netns_ipvs *ipvs = net_ipvs(skb_net(skb));
+ struct netns_ipvs *ipvs = net_ipvs(ip_vs_conn_net(cp));
if (dest && (dest->flags & IP_VS_DEST_F_AVAILABLE)) {
struct ip_vs_cpu_stats *s;
@@ -439,7 +439,7 @@ ip_vs_schedule(struct ip_vs_service *svc, struct sk_buff *skb,
* Do not schedule replies from local real server.
*/
if ((!skb->dev || skb->dev->flags & IFF_LOOPBACK) &&
- (cp = pp->conn_in_get(svc->af, skb, iph, 1))) {
+ (cp = pp->conn_in_get(svc->net, svc->af, skb, iph, 1))) {
IP_VS_DBG_PKT(12, svc->af, pp, skb, 0,
"Not scheduling reply for existing connection");
__ip_vs_conn_put(cp);
@@ -518,7 +518,6 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
{
__be16 _ports[2], *pptr;
#ifdef CONFIG_SYSCTL
- struct net *net;
struct netns_ipvs *ipvs;
int unicast;
#endif
@@ -529,19 +528,17 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
}
#ifdef CONFIG_SYSCTL
- net = skb_net(skb);
-
#ifdef CONFIG_IP_VS_IPV6
if (svc->af == AF_INET6)
unicast = ipv6_addr_type(&iph->daddr.in6) & IPV6_ADDR_UNICAST;
else
#endif
- unicast = (inet_addr_type(net, iph->daddr.ip) == RTN_UNICAST);
+ unicast = (inet_addr_type(svc->net, iph->daddr.ip) == RTN_UNICAST);
/* if it is fwmark-based service, the cache_bypass sysctl is up
and the destination is a non-local unicast, then create
a cache_bypass connection entry */
- ipvs = net_ipvs(net);
+ ipvs = net_ipvs(svc->net);
if (ipvs->sysctl_cache_bypass && svc->fwmark && unicast) {
int ret;
struct ip_vs_conn *cp;
@@ -598,11 +595,8 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
*/
#ifdef CONFIG_IP_VS_IPV6
if (svc->af == AF_INET6) {
- if (!skb->dev) {
- struct net *net_ = dev_net(skb_dst(skb)->dev);
-
- skb->dev = net_->loopback_dev;
- }
+ if (!skb->dev)
+ skb->dev = svc->net->loopback_dev;
icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_PORT_UNREACH, 0);
} else
#endif
@@ -613,9 +607,9 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
#ifdef CONFIG_SYSCTL
-static int sysctl_snat_reroute(struct sk_buff *skb)
+static int sysctl_snat_reroute(struct net *net)
{
- struct netns_ipvs *ipvs = net_ipvs(skb_net(skb));
+ struct netns_ipvs *ipvs = net_ipvs(net);
return ipvs->sysctl_snat_reroute;
}
@@ -632,7 +626,7 @@ static int sysctl_expire_nodest_conn(struct netns_ipvs *ipvs)
#else
-static int sysctl_snat_reroute(struct sk_buff *skb) { return 0; }
+static int sysctl_snat_reroute(struct net *net) { return 0; }
static int sysctl_nat_icmp_send(struct net *net) { return 0; }
static int sysctl_expire_nodest_conn(struct netns_ipvs *ipvs) { return 0; }
@@ -652,12 +646,13 @@ static inline enum ip_defrag_users ip_vs_defrag_user(unsigned int hooknum)
return IP_DEFRAG_VS_OUT;
}
-static inline int ip_vs_gather_frags(struct sk_buff *skb, u_int32_t user)
+static inline int ip_vs_gather_frags(struct net *net, struct sk_buff *skb,
+ u_int32_t user)
{
int err;
local_bh_disable();
- err = ip_defrag(skb_net(skb), skb, user);
+ err = ip_defrag(net, skb, user);
local_bh_enable();
if (!err)
ip_send_check(ip_hdr(skb));
@@ -665,10 +660,10 @@ static inline int ip_vs_gather_frags(struct sk_buff *skb, u_int32_t user)
return err;
}
-static int ip_vs_route_me_harder(int af, struct sk_buff *skb,
+static int ip_vs_route_me_harder(struct net *net, int af, struct sk_buff *skb,
unsigned int hooknum)
{
- if (!sysctl_snat_reroute(skb))
+ if (!sysctl_snat_reroute(net))
return 0;
/* Reroute replies only to remote clients (FORWARD and LOCAL_OUT) */
if (NF_INET_LOCAL_IN == hooknum)
@@ -836,7 +831,7 @@ static int handle_response_icmp(int af, struct sk_buff *skb,
#endif
ip_vs_nat_icmp(skb, pp, cp, 1);
- if (ip_vs_route_me_harder(af, skb, hooknum))
+ if (ip_vs_route_me_harder(ip_vs_conn_net(cp), af, skb, hooknum))
goto out;
/* do the statistics and put it back */
@@ -860,7 +855,7 @@ out:
* Find any that might be relevant, check against existing connections.
* Currently handles error types - unreachable, quench, ttl exceeded.
*/
-static int ip_vs_out_icmp(struct sk_buff *skb, int *related,
+static int ip_vs_out_icmp(struct net *net, struct sk_buff *skb, int *related,
unsigned int hooknum)
{
struct iphdr *iph;
@@ -876,7 +871,7 @@ static int ip_vs_out_icmp(struct sk_buff *skb, int *related,
/* reassemble IP fragments */
if (ip_is_fragment(ip_hdr(skb))) {
- if (ip_vs_gather_frags(skb, ip_vs_defrag_user(hooknum)))
+ if (ip_vs_gather_frags(net, skb, ip_vs_defrag_user(hooknum)))
return NF_STOLEN;
}
@@ -925,7 +920,7 @@ static int ip_vs_out_icmp(struct sk_buff *skb, int *related,
ip_vs_fill_ip4hdr(cih, &ciph);
ciph.len += offset;
/* The embedded headers contain source and dest in reverse order */
- cp = pp->conn_out_get(AF_INET, skb, &ciph, 1);
+ cp = pp->conn_out_get(net, AF_INET, skb, &ciph, 1);
if (!cp)
return NF_ACCEPT;
@@ -935,7 +930,7 @@ static int ip_vs_out_icmp(struct sk_buff *skb, int *related,
}
#ifdef CONFIG_IP_VS_IPV6
-static int ip_vs_out_icmp_v6(struct sk_buff *skb, int *related,
+static int ip_vs_out_icmp_v6(struct net *net, struct sk_buff *skb, int *related,
unsigned int hooknum, struct ip_vs_iphdr *ipvsh)
{
struct icmp6hdr _icmph, *ic;
@@ -989,7 +984,7 @@ static int ip_vs_out_icmp_v6(struct sk_buff *skb, int *related,
return NF_ACCEPT;
/* The embedded headers contain source and dest in reverse order */
- cp = pp->conn_out_get(AF_INET6, skb, &ciph, 1);
+ cp = pp->conn_out_get(net, AF_INET6, skb, &ciph, 1);
if (!cp)
return NF_ACCEPT;
@@ -1115,7 +1110,7 @@ handle_response(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
* if it came from this machine itself. So re-compute
* the routing information.
*/
- if (ip_vs_route_me_harder(af, skb, hooknum))
+ if (ip_vs_route_me_harder(ip_vs_conn_net(cp), af, skb, hooknum))
goto drop;
IP_VS_DBG_PKT(10, af, pp, skb, 0, "After SNAT");
@@ -1143,9 +1138,8 @@ drop:
* Check if outgoing packet belongs to the established ip_vs_conn.
*/
static unsigned int
-ip_vs_out(unsigned int hooknum, struct sk_buff *skb, int af)
+ip_vs_out(struct net *net, unsigned int hooknum, struct sk_buff *skb, int af)
{
- struct net *net = NULL;
struct ip_vs_iphdr iph;
struct ip_vs_protocol *pp;
struct ip_vs_proto_data *pd;
@@ -1170,7 +1164,6 @@ ip_vs_out(unsigned int hooknum, struct sk_buff *skb, int af)
if (unlikely(!skb_dst(skb)))
return NF_ACCEPT;
- net = skb_net(skb);
if (!net_ipvs(net)->enable)
return NF_ACCEPT;
@@ -1179,7 +1172,7 @@ ip_vs_out(unsigned int hooknum, struct sk_buff *skb, int af)
if (af == AF_INET6) {
if (unlikely(iph.protocol == IPPROTO_ICMPV6)) {
int related;
- int verdict = ip_vs_out_icmp_v6(skb, &related,
+ int verdict = ip_vs_out_icmp_v6(net, skb, &related,
hooknum, &iph);
if (related)
@@ -1189,7 +1182,7 @@ ip_vs_out(unsigned int hooknum, struct sk_buff *skb, int af)
#endif
if (unlikely(iph.protocol == IPPROTO_ICMP)) {
int related;
- int verdict = ip_vs_out_icmp(skb, &related, hooknum);
+ int verdict = ip_vs_out_icmp(net, skb, &related, hooknum);
if (related)
return verdict;
@@ -1205,7 +1198,7 @@ ip_vs_out(unsigned int hooknum, struct sk_buff *skb, int af)
if (af == AF_INET)
#endif
if (unlikely(ip_is_fragment(ip_hdr(skb)) && !pp->dont_defrag)) {
- if (ip_vs_gather_frags(skb,
+ if (ip_vs_gather_frags(net, skb,
ip_vs_defrag_user(hooknum)))
return NF_STOLEN;
@@ -1215,7 +1208,7 @@ ip_vs_out(unsigned int hooknum, struct sk_buff *skb, int af)
/*
* Check if the packet belongs to an existing entry
*/
- cp = pp->conn_out_get(af, skb, &iph, 0);
+ cp = pp->conn_out_get(net, af, skb, &iph, 0);
if (likely(cp))
return handle_response(af, skb, pd, cp, &iph, hooknum);
@@ -1274,7 +1267,7 @@ static unsigned int
ip_vs_reply4(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
- return ip_vs_out(state->hook, skb, AF_INET);
+ return ip_vs_out(state->net, state->hook, skb, AF_INET);
}
/*
@@ -1285,7 +1278,7 @@ static unsigned int
ip_vs_local_reply4(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
- return ip_vs_out(state->hook, skb, AF_INET);
+ return ip_vs_out(state->net, state->hook, skb, AF_INET);
}
#ifdef CONFIG_IP_VS_IPV6
@@ -1299,7 +1292,7 @@ static unsigned int
ip_vs_reply6(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
- return ip_vs_out(state->hook, skb, AF_INET6);
+ return ip_vs_out(state->net, state->hook, skb, AF_INET6);
}
/*
@@ -1310,7 +1303,7 @@ static unsigned int
ip_vs_local_reply6(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
- return ip_vs_out(state->hook, skb, AF_INET6);
+ return ip_vs_out(state->net, state->hook, skb, AF_INET6);
}
#endif
@@ -1322,9 +1315,8 @@ ip_vs_local_reply6(void *priv, 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 net *net, struct sk_buff *skb, int *related, unsigned int hooknum)
{
- struct net *net = NULL;
struct iphdr *iph;
struct icmphdr _icmph, *ic;
struct iphdr _ciph, *cih; /* The ip header contained within the ICMP */
@@ -1339,7 +1331,7 @@ ip_vs_in_icmp(struct sk_buff *skb, int *related, unsigned int hooknum)
/* reassemble IP fragments */
if (ip_is_fragment(ip_hdr(skb))) {
- if (ip_vs_gather_frags(skb, ip_vs_defrag_user(hooknum)))
+ if (ip_vs_gather_frags(net, skb, ip_vs_defrag_user(hooknum)))
return NF_STOLEN;
}
@@ -1373,8 +1365,6 @@ 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);
-
/* Special case for errors for IPIP packets */
ipip = false;
if (cih->protocol == IPPROTO_IPIP) {
@@ -1410,7 +1400,7 @@ ip_vs_in_icmp(struct sk_buff *skb, int *related, unsigned int hooknum)
/* The embedded headers contain source and dest in reverse order.
* For IPIP this is error for request, not for reply.
*/
- cp = pp->conn_in_get(AF_INET, skb, &ciph, ipip ? 0 : 1);
+ cp = pp->conn_in_get(net, AF_INET, skb, &ciph, ipip ? 0 : 1);
if (!cp)
return NF_ACCEPT;
@@ -1443,7 +1433,7 @@ 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, net,
mtu, 0, 0, 0, 0);
/* Client uses PMTUD? */
if (!(frag_off & htons(IP_DF)))
@@ -1495,10 +1485,9 @@ out:
}
#ifdef CONFIG_IP_VS_IPV6
-static int ip_vs_in_icmp_v6(struct sk_buff *skb, int *related,
+static int ip_vs_in_icmp_v6(struct net *net, struct sk_buff *skb, int *related,
unsigned int hooknum, struct ip_vs_iphdr *iph)
{
- struct net *net = NULL;
struct ipv6hdr _ip6h, *ip6h;
struct icmp6hdr _icmph, *ic;
struct ip_vs_iphdr ciph = {.flags = 0, .fragoffs = 0};/*Contained IP */
@@ -1547,7 +1536,6 @@ static int ip_vs_in_icmp_v6(struct sk_buff *skb, int *related,
if (ciph.protocol < 0)
return NF_ACCEPT; /* Contained IPv6 hdr looks wrong, ignore */
- net = skb_net(skb);
pd = ip_vs_proto_data_get(net, ciph.protocol);
if (!pd)
return NF_ACCEPT;
@@ -1563,7 +1551,7 @@ static int ip_vs_in_icmp_v6(struct sk_buff *skb, int *related,
/* The embedded headers contain source and dest in reverse order
* if not from localhost
*/
- cp = pp->conn_in_get(AF_INET6, skb, &ciph,
+ cp = pp->conn_in_get(net, AF_INET6, skb, &ciph,
(hooknum == NF_INET_LOCAL_OUT) ? 0 : 1);
if (!cp)
@@ -1598,9 +1586,8 @@ static int ip_vs_in_icmp_v6(struct sk_buff *skb, int *related,
* and send it on its way...
*/
static unsigned int
-ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af)
+ip_vs_in(struct net *net, unsigned int hooknum, struct sk_buff *skb, int af)
{
- struct net *net;
struct ip_vs_iphdr iph;
struct ip_vs_protocol *pp;
struct ip_vs_proto_data *pd;
@@ -1629,7 +1616,6 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af)
return NF_ACCEPT;
}
/* ipvs enabled in this netns ? */
- net = skb_net(skb);
ipvs = net_ipvs(net);
if (unlikely(sysctl_backup_only(ipvs) || !ipvs->enable))
return NF_ACCEPT;
@@ -1650,7 +1636,7 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af)
if (af == AF_INET6) {
if (unlikely(iph.protocol == IPPROTO_ICMPV6)) {
int related;
- int verdict = ip_vs_in_icmp_v6(skb, &related, hooknum,
+ int verdict = ip_vs_in_icmp_v6(net, skb, &related, hooknum,
&iph);
if (related)
@@ -1660,7 +1646,7 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af)
#endif
if (unlikely(iph.protocol == IPPROTO_ICMP)) {
int related;
- int verdict = ip_vs_in_icmp(skb, &related, hooknum);
+ int verdict = ip_vs_in_icmp(net, skb, &related, hooknum);
if (related)
return verdict;
@@ -1674,7 +1660,7 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af)
/*
* Check if the packet belongs to an existing connection entry
*/
- cp = pp->conn_in_get(af, skb, &iph, 0);
+ cp = pp->conn_in_get(net, af, skb, &iph, 0);
conn_reuse_mode = sysctl_conn_reuse_mode(ipvs);
if (conn_reuse_mode && !iph.fragoffs &&
@@ -1695,7 +1681,7 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af)
int v;
/* Schedule and create new connection entry into &cp */
- if (!pp->conn_schedule(af, skb, pd, &v, &cp, &iph))
+ if (!pp->conn_schedule(net, af, skb, pd, &v, &cp, &iph))
return v;
}
@@ -1767,7 +1753,7 @@ static unsigned int
ip_vs_remote_request4(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
- return ip_vs_in(state->hook, skb, AF_INET);
+ return ip_vs_in(state->net, state->hook, skb, AF_INET);
}
/*
@@ -1778,7 +1764,7 @@ static unsigned int
ip_vs_local_request4(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
- return ip_vs_in(state->hook, skb, AF_INET);
+ return ip_vs_in(state->net, state->hook, skb, AF_INET);
}
#ifdef CONFIG_IP_VS_IPV6
@@ -1791,7 +1777,7 @@ static unsigned int
ip_vs_remote_request6(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
- return ip_vs_in(state->hook, skb, AF_INET6);
+ return ip_vs_in(state->net, state->hook, skb, AF_INET6);
}
/*
@@ -1802,7 +1788,7 @@ static unsigned int
ip_vs_local_request6(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
- return ip_vs_in(state->hook, skb, AF_INET6);
+ return ip_vs_in(state->net, state->hook, skb, AF_INET6);
}
#endif
@@ -1822,19 +1808,17 @@ ip_vs_forward_icmp(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
int r;
- struct net *net;
struct netns_ipvs *ipvs;
if (ip_hdr(skb)->protocol != IPPROTO_ICMP)
return NF_ACCEPT;
/* ipvs enabled in this netns ? */
- net = skb_net(skb);
- ipvs = net_ipvs(net);
+ 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(state->net, skb, &r, state->hook);
}
#ifdef CONFIG_IP_VS_IPV6
@@ -1843,7 +1827,6 @@ ip_vs_forward_icmp_v6(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
int r;
- struct net *net;
struct netns_ipvs *ipvs;
struct ip_vs_iphdr iphdr;
@@ -1852,12 +1835,11 @@ ip_vs_forward_icmp_v6(void *priv, struct sk_buff *skb,
return NF_ACCEPT;
/* ipvs enabled in this netns ? */
- net = skb_net(skb);
- ipvs = net_ipvs(net);
+ 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(state->net, skb, &r, state->hook, &iphdr);
}
#endif
diff --git a/net/netfilter/ipvs/ip_vs_ftp.c b/net/netfilter/ipvs/ip_vs_ftp.c
index 5d3daae98bf0..eed97263e733 100644
--- a/net/netfilter/ipvs/ip_vs_ftp.c
+++ b/net/netfilter/ipvs/ip_vs_ftp.c
@@ -181,7 +181,6 @@ static int ip_vs_ftp_out(struct ip_vs_app *app, struct ip_vs_conn *cp,
int ret = 0;
enum ip_conntrack_info ctinfo;
struct nf_conn *ct;
- struct net *net;
*diff = 0;
@@ -289,9 +288,8 @@ static int ip_vs_ftp_out(struct ip_vs_app *app, struct ip_vs_conn *cp,
* would be adjusted twice.
*/
- net = skb_net(skb);
cp->app_data = NULL;
- ip_vs_tcp_conn_listen(net, n_cp);
+ ip_vs_tcp_conn_listen(n_cp);
ip_vs_conn_put(n_cp);
return ret;
}
@@ -320,7 +318,6 @@ static int ip_vs_ftp_in(struct ip_vs_app *app, struct ip_vs_conn *cp,
union nf_inet_addr to;
__be16 port;
struct ip_vs_conn *n_cp;
- struct net *net;
/* no diff required for incoming packets */
*diff = 0;
@@ -413,8 +410,7 @@ static int ip_vs_ftp_in(struct ip_vs_app *app, struct ip_vs_conn *cp,
/*
* Move tunnel to listen state
*/
- net = skb_net(skb);
- ip_vs_tcp_conn_listen(net, n_cp);
+ ip_vs_tcp_conn_listen(n_cp);
ip_vs_conn_put(n_cp);
return 1;
diff --git a/net/netfilter/ipvs/ip_vs_proto_ah_esp.c b/net/netfilter/ipvs/ip_vs_proto_ah_esp.c
index 5de3dd312c0f..437d96d43597 100644
--- a/net/netfilter/ipvs/ip_vs_proto_ah_esp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_ah_esp.c
@@ -56,13 +56,12 @@ ah_esp_conn_fill_param_proto(struct net *net, int af,
}
static struct ip_vs_conn *
-ah_esp_conn_in_get(int af, const struct sk_buff *skb,
+ah_esp_conn_in_get(struct net *net, int af, const struct sk_buff *skb,
const struct ip_vs_iphdr *iph,
int inverse)
{
struct ip_vs_conn *cp;
struct ip_vs_conn_param p;
- struct net *net = skb_net(skb);
ah_esp_conn_fill_param_proto(net, af, iph, inverse, &p);
cp = ip_vs_conn_in_get(&p);
@@ -84,12 +83,11 @@ ah_esp_conn_in_get(int af, const struct sk_buff *skb,
static struct ip_vs_conn *
-ah_esp_conn_out_get(int af, const struct sk_buff *skb,
+ah_esp_conn_out_get(struct net *net, int af, const struct sk_buff *skb,
const struct ip_vs_iphdr *iph, int inverse)
{
struct ip_vs_conn *cp;
struct ip_vs_conn_param p;
- struct net *net = skb_net(skb);
ah_esp_conn_fill_param_proto(net, af, iph, inverse, &p);
cp = ip_vs_conn_out_get(&p);
@@ -107,7 +105,8 @@ ah_esp_conn_out_get(int af, const struct sk_buff *skb,
static int
-ah_esp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
+ah_esp_conn_schedule(struct net *net, int af, struct sk_buff *skb,
+ struct ip_vs_proto_data *pd,
int *verdict, struct ip_vs_conn **cpp,
struct ip_vs_iphdr *iph)
{
diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c
index 5b84c0b56642..8baf1eddeed8 100644
--- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
@@ -9,11 +9,11 @@
#include <net/ip_vs.h>
static int
-sctp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
+sctp_conn_schedule(struct net *net, int af, struct sk_buff *skb,
+ struct ip_vs_proto_data *pd,
int *verdict, struct ip_vs_conn **cpp,
struct ip_vs_iphdr *iph)
{
- struct net *net;
struct ip_vs_service *svc;
struct netns_ipvs *ipvs;
sctp_chunkhdr_t _schunkh, *sch;
@@ -32,7 +32,6 @@ sctp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
return 0;
}
- net = skb_net(skb);
ipvs = net_ipvs(net);
rcu_read_lock();
if ((sch->type == SCTP_CID_INIT || sysctl_sloppy_sctp(ipvs)) &&
diff --git a/net/netfilter/ipvs/ip_vs_proto_tcp.c b/net/netfilter/ipvs/ip_vs_proto_tcp.c
index 8e92beb0cca9..7651ef2c9a87 100644
--- a/net/netfilter/ipvs/ip_vs_proto_tcp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_tcp.c
@@ -32,11 +32,11 @@
#include <net/ip_vs.h>
static int
-tcp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
+tcp_conn_schedule(struct net *net, int af, struct sk_buff *skb,
+ struct ip_vs_proto_data *pd,
int *verdict, struct ip_vs_conn **cpp,
struct ip_vs_iphdr *iph)
{
- struct net *net;
struct ip_vs_service *svc;
struct tcphdr _tcph, *th;
struct netns_ipvs *ipvs;
@@ -46,7 +46,6 @@ tcp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
*verdict = NF_DROP;
return 0;
}
- net = skb_net(skb);
ipvs = net_ipvs(net);
/* No !th->ack check to allow scheduling on SYN+ACK for Active FTP */
rcu_read_lock();
@@ -653,8 +652,9 @@ tcp_app_conn_bind(struct ip_vs_conn *cp)
/*
* Set LISTEN timeout. (ip_vs_conn_put will setup timer)
*/
-void ip_vs_tcp_conn_listen(struct net *net, struct ip_vs_conn *cp)
+void ip_vs_tcp_conn_listen(struct ip_vs_conn *cp)
{
+ struct net *net = ip_vs_conn_net(cp);
struct ip_vs_proto_data *pd = ip_vs_proto_data_get(net, IPPROTO_TCP);
spin_lock_bh(&cp->lock);
diff --git a/net/netfilter/ipvs/ip_vs_proto_udp.c b/net/netfilter/ipvs/ip_vs_proto_udp.c
index b62a3c0ff9bf..6eb0c3be3859 100644
--- a/net/netfilter/ipvs/ip_vs_proto_udp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_udp.c
@@ -29,11 +29,11 @@
#include <net/ip6_checksum.h>
static int
-udp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
+udp_conn_schedule(struct net *net, int af, struct sk_buff *skb,
+ struct ip_vs_proto_data *pd,
int *verdict, struct ip_vs_conn **cpp,
struct ip_vs_iphdr *iph)
{
- struct net *net;
struct ip_vs_service *svc;
struct udphdr _udph, *uh;
@@ -43,7 +43,6 @@ udp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
*verdict = NF_DROP;
return 0;
}
- net = skb_net(skb);
rcu_read_lock();
svc = ip_vs_service_find(net, af, skb->mark, iph->protocol,
&iph->daddr, uh->dest);
diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
index 9f8130b33c32..6146f5461431 100644
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -213,14 +213,13 @@ static inline void maybe_update_pmtu(int skb_af, struct sk_buff *skb, int mtu)
ort->dst.ops->update_pmtu(&ort->dst, sk, NULL, mtu);
}
-static inline bool ensure_mtu_is_adequate(int skb_af, int rt_mode,
+static inline bool ensure_mtu_is_adequate(struct net *net, int skb_af,
+ int rt_mode,
struct ip_vs_iphdr *ipvsh,
struct sk_buff *skb, int mtu)
{
#ifdef CONFIG_IP_VS_IPV6
if (skb_af == AF_INET6) {
- struct net *net = dev_net(skb_dst(skb)->dev);
-
if (unlikely(__mtu_check_toobig_v6(skb, mtu))) {
if (!skb->dev)
skb->dev = net->loopback_dev;
@@ -234,7 +233,7 @@ static inline bool ensure_mtu_is_adequate(int skb_af, int rt_mode,
} else
#endif
{
- struct netns_ipvs *ipvs = net_ipvs(skb_net(skb));
+ struct netns_ipvs *ipvs = net_ipvs(net);
/* If we're going to tunnel the packet and pmtu discovery
* is disabled, we'll just fragment it anyway
@@ -257,11 +256,11 @@ static inline bool ensure_mtu_is_adequate(int skb_af, int rt_mode,
/* Get route to destination or remote server */
static int
-__ip_vs_get_out_rt(int skb_af, struct sk_buff *skb, struct ip_vs_dest *dest,
+__ip_vs_get_out_rt(struct net *net, int skb_af, struct sk_buff *skb,
+ struct ip_vs_dest *dest,
__be32 daddr, int rt_mode, __be32 *ret_saddr,
struct ip_vs_iphdr *ipvsh)
{
- struct net *net = dev_net(skb_dst(skb)->dev);
struct ip_vs_dest_dst *dest_dst;
struct rtable *rt; /* Route to the other host */
int mtu;
@@ -337,7 +336,7 @@ __ip_vs_get_out_rt(int skb_af, struct sk_buff *skb, struct ip_vs_dest *dest,
maybe_update_pmtu(skb_af, skb, mtu);
}
- if (!ensure_mtu_is_adequate(skb_af, rt_mode, ipvsh, skb, mtu))
+ if (!ensure_mtu_is_adequate(net, skb_af, rt_mode, ipvsh, skb, mtu))
goto err_put;
skb_dst_drop(skb);
@@ -403,11 +402,11 @@ out_err:
* Get route to destination or remote server
*/
static int
-__ip_vs_get_out_rt_v6(int skb_af, struct sk_buff *skb, struct ip_vs_dest *dest,
+__ip_vs_get_out_rt_v6(struct net *net, int skb_af, struct sk_buff *skb,
+ struct ip_vs_dest *dest,
struct in6_addr *daddr, struct in6_addr *ret_saddr,
struct ip_vs_iphdr *ipvsh, int do_xfrm, int rt_mode)
{
- struct net *net = dev_net(skb_dst(skb)->dev);
struct ip_vs_dest_dst *dest_dst;
struct rt6_info *rt; /* Route to the other host */
struct dst_entry *dst;
@@ -485,7 +484,7 @@ __ip_vs_get_out_rt_v6(int skb_af, struct sk_buff *skb, struct ip_vs_dest *dest,
maybe_update_pmtu(skb_af, skb, mtu);
}
- if (!ensure_mtu_is_adequate(skb_af, rt_mode, ipvsh, skb, mtu))
+ if (!ensure_mtu_is_adequate(net, skb_af, rt_mode, ipvsh, skb, mtu))
goto err_put;
skb_dst_drop(skb);
@@ -592,7 +591,8 @@ ip_vs_bypass_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
EnterFunction(10);
rcu_read_lock();
- if (__ip_vs_get_out_rt(cp->af, skb, NULL, iph->daddr,
+ if (__ip_vs_get_out_rt(ip_vs_conn_net(cp), cp->af, skb, NULL,
+ iph->daddr,
IP_VS_RT_MODE_NON_LOCAL, NULL, ipvsh) < 0)
goto tx_error;
@@ -622,7 +622,8 @@ ip_vs_bypass_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
EnterFunction(10);
rcu_read_lock();
- if (__ip_vs_get_out_rt_v6(cp->af, skb, NULL, &ipvsh->daddr.in6, NULL,
+ if (__ip_vs_get_out_rt_v6(ip_vs_conn_net(cp), cp->af, skb, NULL,
+ &ipvsh->daddr.in6, NULL,
ipvsh, 0, IP_VS_RT_MODE_NON_LOCAL) < 0)
goto tx_error;
@@ -669,7 +670,8 @@ ip_vs_nat_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
}
was_input = rt_is_input_route(skb_rtable(skb));
- local = __ip_vs_get_out_rt(cp->af, skb, cp->dest, cp->daddr.ip,
+ local = __ip_vs_get_out_rt(ip_vs_conn_net(cp), cp->af, skb, cp->dest,
+ cp->daddr.ip,
IP_VS_RT_MODE_LOCAL |
IP_VS_RT_MODE_NON_LOCAL |
IP_VS_RT_MODE_RDR, NULL, ipvsh);
@@ -757,7 +759,8 @@ ip_vs_nat_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
IP_VS_DBG(10, "filled cport=%d\n", ntohs(*p));
}
- local = __ip_vs_get_out_rt_v6(cp->af, skb, cp->dest, &cp->daddr.in6,
+ local = __ip_vs_get_out_rt_v6(ip_vs_conn_net(cp), cp->af, skb, cp->dest,
+ &cp->daddr.in6,
NULL, ipvsh, 0,
IP_VS_RT_MODE_LOCAL |
IP_VS_RT_MODE_NON_LOCAL |
@@ -928,7 +931,7 @@ int
ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
struct ip_vs_protocol *pp, struct ip_vs_iphdr *ipvsh)
{
- struct net *net = skb_net(skb);
+ struct net *net = ip_vs_conn_net(cp);
struct netns_ipvs *ipvs = net_ipvs(net);
struct rtable *rt; /* Route to the other host */
__be32 saddr; /* Source for tunnel */
@@ -945,7 +948,8 @@ ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
EnterFunction(10);
rcu_read_lock();
- local = __ip_vs_get_out_rt(cp->af, skb, cp->dest, cp->daddr.ip,
+ local = __ip_vs_get_out_rt(ip_vs_conn_net(cp), cp->af, skb, cp->dest,
+ cp->daddr.ip,
IP_VS_RT_MODE_LOCAL |
IP_VS_RT_MODE_NON_LOCAL |
IP_VS_RT_MODE_CONNECT |
@@ -1039,7 +1043,8 @@ ip_vs_tunnel_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
EnterFunction(10);
rcu_read_lock();
- local = __ip_vs_get_out_rt_v6(cp->af, skb, cp->dest, &cp->daddr.in6,
+ local = __ip_vs_get_out_rt_v6(ip_vs_conn_net(cp), cp->af, skb, cp->dest,
+ &cp->daddr.in6,
&saddr, ipvsh, 1,
IP_VS_RT_MODE_LOCAL |
IP_VS_RT_MODE_NON_LOCAL |
@@ -1126,7 +1131,8 @@ ip_vs_dr_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
EnterFunction(10);
rcu_read_lock();
- local = __ip_vs_get_out_rt(cp->af, skb, cp->dest, cp->daddr.ip,
+ local = __ip_vs_get_out_rt(ip_vs_conn_net(cp), cp->af, skb, cp->dest,
+ cp->daddr.ip,
IP_VS_RT_MODE_LOCAL |
IP_VS_RT_MODE_NON_LOCAL |
IP_VS_RT_MODE_KNOWN_NH, NULL, ipvsh);
@@ -1165,7 +1171,8 @@ ip_vs_dr_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
EnterFunction(10);
rcu_read_lock();
- local = __ip_vs_get_out_rt_v6(cp->af, skb, cp->dest, &cp->daddr.in6,
+ local = __ip_vs_get_out_rt_v6(ip_vs_conn_net(cp), cp->af, skb, cp->dest,
+ &cp->daddr.in6,
NULL, ipvsh, 0,
IP_VS_RT_MODE_LOCAL |
IP_VS_RT_MODE_NON_LOCAL |
@@ -1234,7 +1241,8 @@ ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
IP_VS_RT_MODE_LOCAL | IP_VS_RT_MODE_NON_LOCAL |
IP_VS_RT_MODE_RDR : IP_VS_RT_MODE_NON_LOCAL;
rcu_read_lock();
- local = __ip_vs_get_out_rt(cp->af, skb, cp->dest, cp->daddr.ip, rt_mode,
+ local = __ip_vs_get_out_rt(ip_vs_conn_net(cp), cp->af, skb, cp->dest,
+ cp->daddr.ip, rt_mode,
NULL, iph);
if (local < 0)
goto tx_error;
@@ -1326,7 +1334,8 @@ ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
IP_VS_RT_MODE_LOCAL | IP_VS_RT_MODE_NON_LOCAL |
IP_VS_RT_MODE_RDR : IP_VS_RT_MODE_NON_LOCAL;
rcu_read_lock();
- local = __ip_vs_get_out_rt_v6(cp->af, skb, cp->dest, &cp->daddr.in6,
+ local = __ip_vs_get_out_rt_v6(ip_vs_conn_net(cp), cp->af, skb, cp->dest,
+ &cp->daddr.in6,
NULL, ipvsh, 0, rt_mode);
if (local < 0)
goto tx_error;
diff --git a/net/netfilter/xt_ipvs.c b/net/netfilter/xt_ipvs.c
index 8d47c3780fda..16884904b70b 100644
--- a/net/netfilter/xt_ipvs.c
+++ b/net/netfilter/xt_ipvs.c
@@ -85,7 +85,7 @@ ipvs_mt(const struct sk_buff *skb, struct xt_action_param *par)
/*
* Check if the packet belongs to an existing entry
*/
- cp = pp->conn_out_get(family, skb, &iph, 1 /* inverse */);
+ cp = pp->conn_out_get(par->net, family, skb, &iph, 1 /* inverse */);
if (unlikely(cp == NULL)) {
match = false;
goto out;
--
2.2.1
--
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