IPVS: netns, prepare protocol

Add support for protocol data per name-space.
in struct ip_vs_protocol, appcnt will be removed when all protos
are modified for network name-space.

This patch causes warnings of unused functions, they will be used
when next patch will be applied.

Signed-off-by: Hans Schillstrom <hans.schillstrom@ericsson.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>

2 files changed, 22 insertions, 1 deletions

diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index d551e0d8fd9a..88d4e40b538a 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -352,6 +352,7 @@ struct iphdr;
 struct ip_vs_conn;
 struct ip_vs_app;
 struct sk_buff;
+struct ip_vs_proto_data;
 
 struct ip_vs_protocol {
         struct ip_vs_protocol   *next;
@@ -366,6 +367,10 @@ struct ip_vs_protocol {
 
         void (*exit)(struct ip_vs_protocol *pp);
 
+        void (*init_netns)(struct net *net, struct ip_vs_proto_data *pd);
+
+        void (*exit_netns)(struct net *net, struct ip_vs_proto_data *pd);
+
         int (*conn_schedule)(int af, struct sk_buff *skb,
                              struct ip_vs_protocol *pp,
                              int *verdict, struct ip_vs_conn **cpp);
@@ -417,7 +422,20 @@ struct ip_vs_protocol {
         int (*set_state_timeout)(struct ip_vs_protocol *pp, char *sname, int to);
 };
 
-extern struct ip_vs_protocol * ip_vs_proto_get(unsigned short proto);
+/*
+ * protocol data per netns
+ */
+struct ip_vs_proto_data {
+        struct ip_vs_proto_data *next;
+        struct ip_vs_protocol   *pp;
+        int                     *timeout_table; /* protocol timeout table */
+        atomic_t                appcnt;         /* counter of proto app incs. */
+        struct tcp_states_t     *tcp_state_table;
+};
+
+extern struct ip_vs_protocol   *ip_vs_proto_get(unsigned short proto);
+extern struct ip_vs_proto_data *ip_vs_proto_data_get(struct net *net,
+                                                     unsigned short proto);
 
 struct ip_vs_conn_param {
         const union nf_inet_addr        *caddr;
diff --git a/include/net/netns/ip_vs.h b/include/net/netns/ip_vs.h
index d14581cc4fe0..6f4e089b8db2 100644
--- a/include/net/netns/ip_vs.h
+++ b/include/net/netns/ip_vs.h
@@ -28,6 +28,9 @@ struct netns_ipvs {
         #define IP_VS_RTAB_MASK (IP_VS_RTAB_SIZE - 1)
 
         struct list_head        rs_table[IP_VS_RTAB_SIZE];
+        /* ip_vs_proto */
+        #define IP_VS_PROTO_TAB_SIZE    32      /* must be power of 2 */
+        struct ip_vs_proto_data *proto_data_table[IP_VS_PROTO_TAB_SIZE];
 
         /* ip_vs_lblc */
         int                     sysctl_lblc_expiration;