[PATCH 11/22] IPVS: netns, common protocol changes and use of appcnt.

[Simon Horman <horms@xxxxxxxxxxxx>]

From: Hans Schillstrom <hans.schillstrom@xxxxxxxxxxxx>

appcnt and timeout_table moved from struct ip_vs_protocol to
ip_vs proto_data.

struct net *net added as first param to
 - register_app()
 - unregister_app()
 - app_conn_bind()
 - ip_vs_conn_new()

Signed-off-by: Hans Schillstrom <hans.schillstrom@xxxxxxxxxxxx>
Signed-off-by: Simon Horman <horms@xxxxxxxxxxxx>
---
 include/net/ip_vs.h                   |    2 -
 net/netfilter/ipvs/ip_vs_conn.c       |    6 ++--
 net/netfilter/ipvs/ip_vs_proto_sctp.c |    4 +-
 net/netfilter/ipvs/ip_vs_proto_tcp.c  |    5 +--
 net/netfilter/ipvs/ip_vs_proto_udp.c  |    4 +-
 net/netfilter/ipvs/ip_vs_sync.c       |   57 ++++++++++++++++++---------------
 6 files changed, 40 insertions(+), 38 deletions(-)

diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index 464ea36..cc6ae62 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -360,8 +360,6 @@ struct ip_vs_protocol {
        u16                     protocol;
        u16                     num_states;
        int                     dont_defrag;
-       atomic_t                appcnt;         /* counter of proto app incs */
-       int                     *timeout_table; /* protocol timeout table */
 
        void (*init)(struct ip_vs_protocol *pp);
 
diff --git a/net/netfilter/ipvs/ip_vs_conn.c b/net/netfilter/ipvs/ip_vs_conn.c
index a7aba6a..b2024c9 100644
--- a/net/netfilter/ipvs/ip_vs_conn.c
+++ b/net/netfilter/ipvs/ip_vs_conn.c
@@ -804,7 +804,7 @@ ip_vs_conn_new(const struct ip_vs_conn_param *p,
               struct ip_vs_dest *dest, __u32 fwmark)
 {
        struct ip_vs_conn *cp;
-       struct ip_vs_protocol *pp = ip_vs_proto_get(p->protocol);
+       struct ip_vs_proto_data *pd = ip_vs_proto_data_get(&init_net, 
p->protocol);
 
        cp = kmem_cache_zalloc(ip_vs_conn_cachep, GFP_ATOMIC);
        if (cp == NULL) {
@@ -863,8 +863,8 @@ ip_vs_conn_new(const struct ip_vs_conn_param *p,
 #endif
                ip_vs_bind_xmit(cp);
 
-       if (unlikely(pp && atomic_read(&pp->appcnt)))
-               ip_vs_bind_app(cp, pp);
+       if (unlikely(pd && atomic_read(&pd->appcnt)))
+               ip_vs_bind_app(cp, pd->pp);
 
        /*
         * Allow conntrack to be preserved. By default, conntrack
diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c 
b/net/netfilter/ipvs/ip_vs_proto_sctp.c
index 19bc379..0f14f79 100644
--- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
@@ -1035,7 +1035,7 @@ static int sctp_register_app(struct ip_vs_app *inc)
                }
        }
        list_add(&inc->p_list, &ipvs->sctp_apps[hash]);
-       atomic_inc(&pd->pp->appcnt);
+       atomic_inc(&pd->appcnt);
 out:
        spin_unlock_bh(&ipvs->sctp_app_lock);
 
@@ -1048,7 +1048,7 @@ static void sctp_unregister_app(struct ip_vs_app *inc)
        struct ip_vs_proto_data *pd = ip_vs_proto_data_get(&init_net, 
IPPROTO_SCTP);
 
        spin_lock_bh(&ipvs->sctp_app_lock);
-       atomic_dec(&pd->pp->appcnt);
+       atomic_dec(&pd->appcnt);
        list_del(&inc->p_list);
        spin_unlock_bh(&ipvs->sctp_app_lock);
 }
diff --git a/net/netfilter/ipvs/ip_vs_proto_tcp.c 
b/net/netfilter/ipvs/ip_vs_proto_tcp.c
index d7c2455..290b380 100644
--- a/net/netfilter/ipvs/ip_vs_proto_tcp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_tcp.c
@@ -596,7 +596,7 @@ static int tcp_register_app(struct ip_vs_app *inc)
                }
        }
        list_add(&inc->p_list, &ipvs->tcp_apps[hash]);
-       atomic_inc(&pd->pp->appcnt);
+       atomic_inc(&pd->appcnt);
 
   out:
        spin_unlock_bh(&ipvs->tcp_app_lock);
@@ -611,7 +611,7 @@ tcp_unregister_app(struct ip_vs_app *inc)
        struct ip_vs_proto_data *pd = ip_vs_proto_data_get(&init_net, 
IPPROTO_TCP);
 
        spin_lock_bh(&ipvs->tcp_app_lock);
-       atomic_dec(&pd->pp->appcnt);
+       atomic_dec(&pd->appcnt);
        list_del(&inc->p_list);
        spin_unlock_bh(&ipvs->tcp_app_lock);
 }
@@ -701,7 +701,6 @@ struct ip_vs_protocol ip_vs_protocol_tcp = {
        .protocol =             IPPROTO_TCP,
        .num_states =           IP_VS_TCP_S_LAST,
        .dont_defrag =          0,
-       .appcnt =               ATOMIC_INIT(0),
        .init =                 NULL,
        .exit =                 NULL,
        .init_netns =           __ip_vs_tcp_init,
diff --git a/net/netfilter/ipvs/ip_vs_proto_udp.c 
b/net/netfilter/ipvs/ip_vs_proto_udp.c
index aa85df2..3719837 100644
--- a/net/netfilter/ipvs/ip_vs_proto_udp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_udp.c
@@ -373,7 +373,7 @@ static int udp_register_app(struct ip_vs_app *inc)
                }
        }
        list_add(&inc->p_list, &ipvs->udp_apps[hash]);
-       atomic_inc(&pd->pp->appcnt);
+       atomic_inc(&pd->appcnt);
 
   out:
        spin_unlock_bh(&ipvs->udp_app_lock);
@@ -388,7 +388,7 @@ udp_unregister_app(struct ip_vs_app *inc)
        struct netns_ipvs *ipvs = net_ipvs(&init_net);
 
        spin_lock_bh(&ipvs->udp_app_lock);
-       atomic_dec(&pd->pp->appcnt);
+       atomic_dec(&pd->appcnt);
        list_del(&inc->p_list);
        spin_unlock_bh(&ipvs->udp_app_lock);
 }
diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c
index 662aa2c..67b2b09 100644
--- a/net/netfilter/ipvs/ip_vs_sync.c
+++ b/net/netfilter/ipvs/ip_vs_sync.c
@@ -725,17 +725,16 @@ ip_vs_conn_fill_param_sync(int af, union ip_vs_sync_conn 
*sc,
  *  Param: ...
  *         timeout is in sec.
  */
-static void ip_vs_proc_conn(struct ip_vs_conn_param *param,  unsigned flags,
-                           unsigned state, unsigned protocol, unsigned type,
+static void ip_vs_proc_conn(struct net *net, struct ip_vs_conn_param *param,
+                           unsigned int flags, unsigned int state,
+                           unsigned int protocol, unsigned int type,
                            const union nf_inet_addr *daddr, __be16 dport,
                            unsigned long timeout, __u32 fwmark,
-                           struct ip_vs_sync_conn_options *opt,
-                           struct ip_vs_protocol *pp)
+                           struct ip_vs_sync_conn_options *opt)
 {
        struct ip_vs_dest *dest;
        struct ip_vs_conn *cp;
 
-
        if (!(flags & IP_VS_CONN_F_TEMPLATE))
                cp = ip_vs_conn_in_get(param);
        else
@@ -821,17 +820,23 @@ static void ip_vs_proc_conn(struct ip_vs_conn_param 
*param,  unsigned flags,
                if (timeout > MAX_SCHEDULE_TIMEOUT / HZ)
                        timeout = MAX_SCHEDULE_TIMEOUT / HZ;
                cp->timeout = timeout*HZ;
-       } else if (!(flags & IP_VS_CONN_F_TEMPLATE) && pp->timeout_table)
-               cp->timeout = pp->timeout_table[state];
-       else
-               cp->timeout = (3*60*HZ);
+       } else {
+               struct ip_vs_proto_data *pd;
+
+               pd = ip_vs_proto_data_get(net, protocol);
+               if (!(flags & IP_VS_CONN_F_TEMPLATE) && pd && pd->timeout_table)
+                       cp->timeout = pd->timeout_table[state];
+               else
+                       cp->timeout = (3*60*HZ);
+       }
        ip_vs_conn_put(cp);
 }
 
 /*
  *  Process received multicast message for Version 0
  */
-static void ip_vs_process_message_v0(const char *buffer, const size_t buflen)
+static void ip_vs_process_message_v0(struct net *net, const char *buffer,
+                                    const size_t buflen)
 {
        struct ip_vs_sync_mesg_v0 *m = (struct ip_vs_sync_mesg_v0 *)buffer;
        struct ip_vs_sync_conn_v0 *s;
@@ -843,7 +848,7 @@ static void ip_vs_process_message_v0(const char *buffer, 
const size_t buflen)
 
        p = (char *)buffer + sizeof(struct ip_vs_sync_mesg_v0);
        for (i=0; i<m->nr_conns; i++) {
-               unsigned flags, state;
+               unsigned int flags, state;
 
                if (p + SIMPLE_CONN_SIZE > buffer+buflen) {
                        IP_VS_ERR_RL("BACKUP v0, bogus conn\n");
@@ -879,7 +884,6 @@ static void ip_vs_process_message_v0(const char *buffer, 
const size_t buflen)
                        }
                } else {
                        /* protocol in templates is not used for state/timeout 
*/
-                       pp = NULL;
                        if (state > 0) {
                                IP_VS_DBG(2, "BACKUP v0, Invalid template state 
%u\n",
                                        state);
@@ -894,9 +898,9 @@ static void ip_vs_process_message_v0(const char *buffer, 
const size_t buflen)
                                      s->vport, &param);
 
                /* Send timeout as Zero */
-               ip_vs_proc_conn(&param, flags, state, s->protocol, AF_INET,
+               ip_vs_proc_conn(net, &param, flags, state, s->protocol, AF_INET,
                                (union nf_inet_addr *)&s->daddr, s->dport,
-                               0, 0, opt, pp);
+                               0, 0, opt);
        }
 }
 
@@ -945,7 +949,7 @@ static int ip_vs_proc_str(__u8 *p, unsigned int plen, 
unsigned int *data_len,
 /*
  *   Process a Version 1 sync. connection
  */
-static inline int ip_vs_proc_sync_conn(__u8 *p, __u8 *msg_end)
+static inline int ip_vs_proc_sync_conn(struct net *net, __u8 *p, __u8 *msg_end)
 {
        struct ip_vs_sync_conn_options opt;
        union  ip_vs_sync_conn *s;
@@ -1043,7 +1047,6 @@ static inline int ip_vs_proc_sync_conn(__u8 *p, __u8 
*msg_end)
                }
        } else {
                /* protocol in templates is not used for state/timeout */
-               pp = NULL;
                if (state > 0) {
                        IP_VS_DBG(3, "BACKUP, Invalid template state %u\n",
                                state);
@@ -1058,18 +1061,18 @@ static inline int ip_vs_proc_sync_conn(__u8 *p, __u8 
*msg_end)
        }
        /* If only IPv4, just silent skip IPv6 */
        if (af == AF_INET)
-               ip_vs_proc_conn(&param, flags, state, s->v4.protocol, af,
+               ip_vs_proc_conn(net, &param, flags, state, s->v4.protocol, af,
                                (union nf_inet_addr *)&s->v4.daddr, s->v4.dport,
                                ntohl(s->v4.timeout), ntohl(s->v4.fwmark),
-                               (opt_flags & IPVS_OPT_F_SEQ_DATA ? &opt : NULL),
-                               pp);
+                               (opt_flags & IPVS_OPT_F_SEQ_DATA ? &opt : NULL)
+                               );
 #ifdef CONFIG_IP_VS_IPV6
        else
-               ip_vs_proc_conn(&param, flags, state, s->v6.protocol, af,
+               ip_vs_proc_conn(net, &param, flags, state, s->v6.protocol, af,
                                (union nf_inet_addr *)&s->v6.daddr, s->v6.dport,
                                ntohl(s->v6.timeout), ntohl(s->v6.fwmark),
-                               (opt_flags & IPVS_OPT_F_SEQ_DATA ? &opt : NULL),
-                               pp);
+                               (opt_flags & IPVS_OPT_F_SEQ_DATA ? &opt : NULL)
+                               );
 #endif
        return 0;
        /* Error exit */
@@ -1083,7 +1086,8 @@ out:
  *      ip_vs_conn entries.
  *      Handles Version 0 & 1
  */
-static void ip_vs_process_message(__u8 *buffer, const size_t buflen)
+static void ip_vs_process_message(struct net *net, __u8 *buffer,
+                                 const size_t buflen)
 {
        struct ip_vs_sync_mesg *m2 = (struct ip_vs_sync_mesg *)buffer;
        __u8 *p, *msg_end;
@@ -1136,7 +1140,8 @@ static void ip_vs_process_message(__u8 *buffer, const 
size_t buflen)
                                return;
                        }
                        /* Process a single sync_conn */
-                       if ((retc=ip_vs_proc_sync_conn(p, msg_end)) < 0) {
+                       retc = ip_vs_proc_sync_conn(net, p, msg_end);
+                       if (retc < 0) {
                                IP_VS_ERR_RL("BACKUP, Dropping buffer, Err: %d 
in decoding\n",
                                             retc);
                                return;
@@ -1146,7 +1151,7 @@ static void ip_vs_process_message(__u8 *buffer, const 
size_t buflen)
                }
        } else {
                /* Old type of message */
-               ip_vs_process_message_v0(buffer, buflen);
+               ip_vs_process_message_v0(net, buffer, buflen);
                return;
        }
 }
@@ -1500,7 +1505,7 @@ static int sync_thread_backup(void *data)
                        /* disable bottom half, because it accesses the data
                           shared by softirq while getting/creating conns */
                        local_bh_disable();
-                       ip_vs_process_message(tinfo->buf, len);
+                       ip_vs_process_message(&init_net, tinfo->buf, len);
                        local_bh_enable();
                }
        }
-- 
1.7.2.3

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