[PATCH next 07/84] ipvs: Store ipvs not net in struct ip_vs_service

["Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>]

In practice struct netns_ipvs is as meaningful as struct net and more
useful as it holds the ipvs specific data.  So store a pointer to
struct netns_ipvs.

Update the accesses of param->net to access param->ipvs->net instead.

In functions where we are searching for an svc and filtering by net
filter by ipvs instead.

Signed-off-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
---
 include/net/ip_vs.h              |  2 +-
 net/netfilter/ipvs/ip_vs_core.c  | 10 +++----
 net/netfilter/ipvs/ip_vs_ctl.c   | 64 ++++++++++++++++++++++------------------
 net/netfilter/ipvs/ip_vs_lblc.c  |  3 +-
 net/netfilter/ipvs/ip_vs_lblcr.c |  3 +-
 5 files changed, 43 insertions(+), 39 deletions(-)

diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index 83e2aea63db2..2c22380b9ad7 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -678,7 +678,7 @@ struct ip_vs_service {
        unsigned int            flags;    /* service status flags */
        unsigned int            timeout;  /* persistent timeout in ticks */
        __be32                  netmask;  /* grouping granularity, mask/plen */
-       struct net              *net;
+       struct netns_ipvs       *ipvs;
 
        struct list_head        destinations;  /* real server d-linked list */
        __u32                   num_dests;     /* number of servers */
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index fd02aec0a11a..583199c2bcdc 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -179,7 +179,7 @@ ip_vs_out_stats(struct ip_vs_conn *cp, struct sk_buff *skb)
 static inline void
 ip_vs_conn_stats(struct ip_vs_conn *cp, struct ip_vs_service *svc)
 {
-       struct netns_ipvs *ipvs = net_ipvs(svc->net);
+       struct netns_ipvs *ipvs = svc->ipvs;
        struct ip_vs_cpu_stats *s;
 
        s = this_cpu_ptr(cp->dest->stats.cpustats);
@@ -215,7 +215,7 @@ ip_vs_conn_fill_param_persist(const struct ip_vs_service 
*svc,
                              const union nf_inet_addr *vaddr, __be16 vport,
                              struct ip_vs_conn_param *p)
 {
-       ip_vs_conn_fill_param(net_ipvs(svc->net), svc->af, protocol, caddr, 
cport, vaddr,
+       ip_vs_conn_fill_param(svc->ipvs, svc->af, protocol, caddr, cport, vaddr,
                              vport, p);
        p->pe = rcu_dereference(svc->pe);
        if (p->pe && p->pe->fill_param)
@@ -376,7 +376,7 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
        /*
         *    Create a new connection according to the template
         */
-       ip_vs_conn_fill_param(net_ipvs(svc->net), svc->af, iph->protocol, 
src_addr,
+       ip_vs_conn_fill_param(svc->ipvs, svc->af, iph->protocol, src_addr,
                              src_port, dst_addr, dst_port, &param);
 
        cp = ip_vs_conn_new(&param, dest->af, &dest->addr, dport, flags, dest,
@@ -524,7 +524,7 @@ ip_vs_schedule(struct ip_vs_service *svc, struct sk_buff 
*skb,
        {
                struct ip_vs_conn_param p;
 
-               ip_vs_conn_fill_param(net_ipvs(svc->net), svc->af, 
iph->protocol,
+               ip_vs_conn_fill_param(svc->ipvs, svc->af, iph->protocol,
                                      caddr, cport, vaddr, vport, &p);
                cp = ip_vs_conn_new(&p, dest->af, &dest->addr,
                                    dest->port ? dest->port : vport,
@@ -600,7 +600,7 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff 
*skb,
                IP_VS_DBG(6, "%s(): create a cache_bypass entry\n", __func__);
                {
                        struct ip_vs_conn_param p;
-                       ip_vs_conn_fill_param(net_ipvs(svc->net), svc->af, 
iph->protocol,
+                       ip_vs_conn_fill_param(svc->ipvs, svc->af, iph->protocol,
                                              &iph->saddr, pptr[0],
                                              &iph->daddr, pptr[1], &p);
                        cp = ip_vs_conn_new(&p, svc->af, &daddr, 0,
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index 6162ae56e47a..7132e83617b6 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -309,14 +309,14 @@ static int ip_vs_svc_hash(struct ip_vs_service *svc)
                /*
                 *  Hash it by <netns,protocol,addr,port> in ip_vs_svc_table
                 */
-               hash = ip_vs_svc_hashkey(svc->net, svc->af, svc->protocol,
+               hash = ip_vs_svc_hashkey(svc->ipvs->net, svc->af, svc->protocol,
                                         &svc->addr, svc->port);
                hlist_add_head_rcu(&svc->s_list, &ip_vs_svc_table[hash]);
        } else {
                /*
                 *  Hash it by fwmark in svc_fwm_table
                 */
-               hash = ip_vs_svc_fwm_hashkey(svc->net, svc->fwmark);
+               hash = ip_vs_svc_fwm_hashkey(svc->ipvs->net, svc->fwmark);
                hlist_add_head_rcu(&svc->f_list, &ip_vs_svc_fwm_table[hash]);
        }
 
@@ -360,6 +360,7 @@ static inline struct ip_vs_service *
 __ip_vs_service_find(struct net *net, int af, __u16 protocol,
                     const union nf_inet_addr *vaddr, __be16 vport)
 {
+       struct netns_ipvs *ipvs = net_ipvs(net);
        unsigned int hash;
        struct ip_vs_service *svc;
 
@@ -371,7 +372,7 @@ __ip_vs_service_find(struct net *net, int af, __u16 
protocol,
                    && ip_vs_addr_equal(af, &svc->addr, vaddr)
                    && (svc->port == vport)
                    && (svc->protocol == protocol)
-                   && net_eq(svc->net, net)) {
+                   && (svc->ipvs == ipvs)) {
                        /* HIT */
                        return svc;
                }
@@ -387,6 +388,7 @@ __ip_vs_service_find(struct net *net, int af, __u16 
protocol,
 static inline struct ip_vs_service *
 __ip_vs_svc_fwm_find(struct net *net, int af, __u32 fwmark)
 {
+       struct netns_ipvs *ipvs = net_ipvs(net);
        unsigned int hash;
        struct ip_vs_service *svc;
 
@@ -395,7 +397,7 @@ __ip_vs_svc_fwm_find(struct net *net, int af, __u32 fwmark)
 
        hlist_for_each_entry_rcu(svc, &ip_vs_svc_fwm_table[hash], f_list) {
                if (svc->fwmark == fwmark && svc->af == af
-                   && net_eq(svc->net, net)) {
+                   && (svc->ipvs == ipvs)) {
                        /* HIT */
                        return svc;
                }
@@ -660,7 +662,7 @@ ip_vs_trash_get_dest(struct ip_vs_service *svc, int dest_af,
                     const union nf_inet_addr *daddr, __be16 dport)
 {
        struct ip_vs_dest *dest;
-       struct netns_ipvs *ipvs = net_ipvs(svc->net);
+       struct netns_ipvs *ipvs = svc->ipvs;
 
        /*
         * Find the destination in trash
@@ -788,7 +790,7 @@ static void
 __ip_vs_update_dest(struct ip_vs_service *svc, struct ip_vs_dest *dest,
                    struct ip_vs_dest_user_kern *udest, int add)
 {
-       struct netns_ipvs *ipvs = net_ipvs(svc->net);
+       struct netns_ipvs *ipvs = svc->ipvs;
        struct ip_vs_service *old_svc;
        struct ip_vs_scheduler *sched;
        int conn_flags;
@@ -843,7 +845,7 @@ __ip_vs_update_dest(struct ip_vs_service *svc, struct 
ip_vs_dest *dest,
        spin_unlock_bh(&dest->dst_lock);
 
        if (add) {
-               ip_vs_start_estimator(svc->net, &dest->stats);
+               ip_vs_start_estimator(svc->ipvs->net, &dest->stats);
                list_add_rcu(&dest->n_list, &svc->destinations);
                svc->num_dests++;
                sched = rcu_dereference_protected(svc->scheduler, 1);
@@ -874,12 +876,12 @@ ip_vs_new_dest(struct ip_vs_service *svc, struct 
ip_vs_dest_user_kern *udest,
                atype = ipv6_addr_type(&udest->addr.in6);
                if ((!(atype & IPV6_ADDR_UNICAST) ||
                        atype & IPV6_ADDR_LINKLOCAL) &&
-                       !__ip_vs_addr_is_local_v6(svc->net, &udest->addr.in6))
+                       !__ip_vs_addr_is_local_v6(svc->ipvs->net, 
&udest->addr.in6))
                        return -EINVAL;
        } else
 #endif
        {
-               atype = inet_addr_type(svc->net, udest->addr.ip);
+               atype = inet_addr_type(svc->ipvs->net, udest->addr.ip);
                if (atype != RTN_LOCAL && atype != RTN_UNICAST)
                        return -EINVAL;
        }
@@ -1079,7 +1081,7 @@ static void __ip_vs_unlink_dest(struct ip_vs_service *svc,
        svc->num_dests--;
 
        if (dest->af != svc->af)
-               net_ipvs(svc->net)->mixed_address_family_dests--;
+               svc->ipvs->mixed_address_family_dests--;
 
        if (svcupd) {
                struct ip_vs_scheduler *sched;
@@ -1120,7 +1122,7 @@ ip_vs_del_dest(struct ip_vs_service *svc, struct 
ip_vs_dest_user_kern *udest)
        /*
         *      Delete the destination
         */
-       __ip_vs_del_dest(svc->net, dest, false);
+       __ip_vs_del_dest(svc->ipvs->net, dest, false);
 
        LeaveFunction(2);
 
@@ -1237,7 +1239,7 @@ ip_vs_add_service(struct net *net, struct 
ip_vs_service_user_kern *u,
        svc->flags = u->flags;
        svc->timeout = u->timeout * HZ;
        svc->netmask = u->netmask;
-       svc->net = net;
+       svc->ipvs = ipvs;
 
        INIT_LIST_HEAD(&svc->destinations);
        spin_lock_init(&svc->sched_lock);
@@ -1381,7 +1383,7 @@ static void __ip_vs_del_service(struct ip_vs_service 
*svc, bool cleanup)
        struct ip_vs_dest *dest, *nxt;
        struct ip_vs_scheduler *old_sched;
        struct ip_vs_pe *old_pe;
-       struct netns_ipvs *ipvs = net_ipvs(svc->net);
+       struct netns_ipvs *ipvs = svc->ipvs;
 
        pr_info("%s: enter\n", __func__);
 
@@ -1389,7 +1391,7 @@ static void __ip_vs_del_service(struct ip_vs_service 
*svc, bool cleanup)
        if (svc->af == AF_INET)
                ipvs->num_services--;
 
-       ip_vs_stop_estimator(svc->net, &svc->stats);
+       ip_vs_stop_estimator(svc->ipvs->net, &svc->stats);
 
        /* Unbind scheduler */
        old_sched = rcu_dereference_protected(svc->scheduler, 1);
@@ -1405,7 +1407,7 @@ static void __ip_vs_del_service(struct ip_vs_service 
*svc, bool cleanup)
         */
        list_for_each_entry_safe(dest, nxt, &svc->destinations, n_list) {
                __ip_vs_unlink_dest(svc, dest, 0);
-               __ip_vs_del_dest(svc->net, dest, cleanup);
+               __ip_vs_del_dest(svc->ipvs->net, dest, cleanup);
        }
 
        /*
@@ -1458,6 +1460,7 @@ static int ip_vs_del_service(struct ip_vs_service *svc)
  */
 static int ip_vs_flush(struct net *net, bool cleanup)
 {
+       struct netns_ipvs *ipvs = net_ipvs(net);
        int idx;
        struct ip_vs_service *svc;
        struct hlist_node *n;
@@ -1468,7 +1471,7 @@ static int ip_vs_flush(struct net *net, bool cleanup)
        for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) {
                hlist_for_each_entry_safe(svc, n, &ip_vs_svc_table[idx],
                                          s_list) {
-                       if (net_eq(svc->net, net))
+                       if (svc->ipvs == ipvs)
                                ip_vs_unlink_service(svc, cleanup);
                }
        }
@@ -1479,7 +1482,7 @@ static int ip_vs_flush(struct net *net, bool cleanup)
        for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) {
                hlist_for_each_entry_safe(svc, n, &ip_vs_svc_fwm_table[idx],
                                          f_list) {
-                       if (net_eq(svc->net, net))
+                       if (svc->ipvs == ipvs)
                                ip_vs_unlink_service(svc, cleanup);
                }
        }
@@ -1540,7 +1543,7 @@ static int ip_vs_dst_event(struct notifier_block *this, 
unsigned long event,
        mutex_lock(&__ip_vs_mutex);
        for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) {
                hlist_for_each_entry(svc, &ip_vs_svc_table[idx], s_list) {
-                       if (net_eq(svc->net, net)) {
+                       if (svc->ipvs == ipvs) {
                                list_for_each_entry(dest, &svc->destinations,
                                                    n_list) {
                                        ip_vs_forget_dev(dest, dev);
@@ -1549,7 +1552,7 @@ static int ip_vs_dst_event(struct notifier_block *this, 
unsigned long event,
                }
 
                hlist_for_each_entry(svc, &ip_vs_svc_fwm_table[idx], f_list) {
-                       if (net_eq(svc->net, net)) {
+                       if (svc->ipvs == ipvs) {
                                list_for_each_entry(dest, &svc->destinations,
                                                    n_list) {
                                        ip_vs_forget_dev(dest, dev);
@@ -1585,24 +1588,25 @@ static int ip_vs_zero_service(struct ip_vs_service *svc)
 
 static int ip_vs_zero_all(struct net *net)
 {
+       struct netns_ipvs *ipvs = net_ipvs(net);
        int idx;
        struct ip_vs_service *svc;
 
        for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) {
                hlist_for_each_entry(svc, &ip_vs_svc_table[idx], s_list) {
-                       if (net_eq(svc->net, net))
+                       if (svc->ipvs == ipvs)
                                ip_vs_zero_service(svc);
                }
        }
 
        for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) {
                hlist_for_each_entry(svc, &ip_vs_svc_fwm_table[idx], f_list) {
-                       if (net_eq(svc->net, net))
+                       if (svc->ipvs == ipvs)
                                ip_vs_zero_service(svc);
                }
        }
 
-       ip_vs_zero_stats(&net_ipvs(net)->tot_stats);
+       ip_vs_zero_stats(&ipvs->tot_stats);
        return 0;
 }
 
@@ -1901,6 +1905,7 @@ static inline const char *ip_vs_fwd_name(unsigned int 
flags)
 static struct ip_vs_service *ip_vs_info_array(struct seq_file *seq, loff_t pos)
 {
        struct net *net = seq_file_net(seq);
+       struct netns_ipvs *ipvs = net_ipvs(net);
        struct ip_vs_iter *iter = seq->private;
        int idx;
        struct ip_vs_service *svc;
@@ -1908,7 +1913,7 @@ static struct ip_vs_service *ip_vs_info_array(struct 
seq_file *seq, loff_t pos)
        /* look in hash by protocol */
        for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) {
                hlist_for_each_entry_rcu(svc, &ip_vs_svc_table[idx], s_list) {
-                       if (net_eq(svc->net, net) && pos-- == 0) {
+                       if ((svc->ipvs == ipvs) && pos-- == 0) {
                                iter->table = ip_vs_svc_table;
                                iter->bucket = idx;
                                return svc;
@@ -1920,7 +1925,7 @@ static struct ip_vs_service *ip_vs_info_array(struct 
seq_file *seq, loff_t pos)
        for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) {
                hlist_for_each_entry_rcu(svc, &ip_vs_svc_fwm_table[idx],
                                         f_list) {
-                       if (net_eq(svc->net, net) && pos-- == 0) {
+                       if ((svc->ipvs == ipvs) && pos-- == 0) {
                                iter->table = ip_vs_svc_fwm_table;
                                iter->bucket = idx;
                                return svc;
@@ -2487,6 +2492,7 @@ __ip_vs_get_service_entries(struct net *net,
                            const struct ip_vs_get_services *get,
                            struct ip_vs_get_services __user *uptr)
 {
+       struct netns_ipvs *ipvs = net_ipvs(net);
        int idx, count=0;
        struct ip_vs_service *svc;
        struct ip_vs_service_entry entry;
@@ -2495,7 +2501,7 @@ __ip_vs_get_service_entries(struct net *net,
        for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) {
                hlist_for_each_entry(svc, &ip_vs_svc_table[idx], s_list) {
                        /* Only expose IPv4 entries to old interface */
-                       if (svc->af != AF_INET || !net_eq(svc->net, net))
+                       if (svc->af != AF_INET || (svc->ipvs != ipvs))
                                continue;
 
                        if (count >= get->num_services)
@@ -2514,7 +2520,7 @@ __ip_vs_get_service_entries(struct net *net,
        for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) {
                hlist_for_each_entry(svc, &ip_vs_svc_fwm_table[idx], f_list) {
                        /* Only expose IPv4 entries to old interface */
-                       if (svc->af != AF_INET || !net_eq(svc->net, net))
+                       if (svc->af != AF_INET || (svc->ipvs != ipvs))
                                continue;
 
                        if (count >= get->num_services)
@@ -3008,12 +3014,12 @@ static int ip_vs_genl_dump_services(struct sk_buff *skb,
        int idx = 0, i;
        int start = cb->args[0];
        struct ip_vs_service *svc;
-       struct net *net = skb_sknet(skb);
+       struct netns_ipvs *ipvs = net_ipvs(skb_sknet(skb));
 
        mutex_lock(&__ip_vs_mutex);
        for (i = 0; i < IP_VS_SVC_TAB_SIZE; i++) {
                hlist_for_each_entry(svc, &ip_vs_svc_table[i], s_list) {
-                       if (++idx <= start || !net_eq(svc->net, net))
+                       if (++idx <= start || (svc->ipvs != ipvs))
                                continue;
                        if (ip_vs_genl_dump_service(skb, svc, cb) < 0) {
                                idx--;
@@ -3024,7 +3030,7 @@ static int ip_vs_genl_dump_services(struct sk_buff *skb,
 
        for (i = 0; i < IP_VS_SVC_TAB_SIZE; i++) {
                hlist_for_each_entry(svc, &ip_vs_svc_fwm_table[i], f_list) {
-                       if (++idx <= start || !net_eq(svc->net, net))
+                       if (++idx <= start || (svc->ipvs != ipvs))
                                continue;
                        if (ip_vs_genl_dump_service(skb, svc, cb) < 0) {
                                idx--;
diff --git a/net/netfilter/ipvs/ip_vs_lblc.c b/net/netfilter/ipvs/ip_vs_lblc.c
index 127f14046c51..cccf4d637412 100644
--- a/net/netfilter/ipvs/ip_vs_lblc.c
+++ b/net/netfilter/ipvs/ip_vs_lblc.c
@@ -250,8 +250,7 @@ static void ip_vs_lblc_flush(struct ip_vs_service *svc)
 static int sysctl_lblc_expiration(struct ip_vs_service *svc)
 {
 #ifdef CONFIG_SYSCTL
-       struct netns_ipvs *ipvs = net_ipvs(svc->net);
-       return ipvs->sysctl_lblc_expiration;
+       return svc->ipvs->sysctl_lblc_expiration;
 #else
        return DEFAULT_EXPIRATION;
 #endif
diff --git a/net/netfilter/ipvs/ip_vs_lblcr.c b/net/netfilter/ipvs/ip_vs_lblcr.c
index 2229d2d8bbe0..796d70e47ddd 100644
--- a/net/netfilter/ipvs/ip_vs_lblcr.c
+++ b/net/netfilter/ipvs/ip_vs_lblcr.c
@@ -415,8 +415,7 @@ static void ip_vs_lblcr_flush(struct ip_vs_service *svc)
 static int sysctl_lblcr_expiration(struct ip_vs_service *svc)
 {
 #ifdef CONFIG_SYSCTL
-       struct netns_ipvs *ipvs = net_ipvs(svc->net);
-       return ipvs->sysctl_lblcr_expiration;
+       return svc->ipvs->sysctl_lblcr_expiration;
 #else
        return DEFAULT_EXPIRATION;
 #endif
-- 
2.2.1

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