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-rw-r--r--include/linux/ipv6.h3
-rw-r--r--include/net/inet_timewait_sock.h3
-rw-r--r--include/net/sock.h4
-rw-r--r--include/net/tcp.h3
-rw-r--r--include/net/timewait_sock.h31
5 files changed, 40 insertions, 4 deletions
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index 7d3908594fa..a0d04891fe1 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -360,7 +360,8 @@ struct tcp6_timewait_sock {
static inline u16 inet6_tw_offset(const struct proto *prot)
{
- return prot->twsk_obj_size - sizeof(struct inet6_timewait_sock);
+ return prot->twsk_prot->twsk_obj_size -
+ sizeof(struct inet6_timewait_sock);
}
static inline struct inet6_timewait_sock *inet6_twsk(const struct sock *sk)
diff --git a/include/net/inet_timewait_sock.h b/include/net/inet_timewait_sock.h
index ca240f856c4..e396a65473d 100644
--- a/include/net/inet_timewait_sock.h
+++ b/include/net/inet_timewait_sock.h
@@ -26,6 +26,7 @@
#include <net/sock.h>
#include <net/tcp_states.h>
+#include <net/timewait_sock.h>
#include <asm/atomic.h>
@@ -200,7 +201,7 @@ static inline void inet_twsk_put(struct inet_timewait_sock *tw)
printk(KERN_DEBUG "%s timewait_sock %p released\n",
tw->tw_prot->name, tw);
#endif
- kmem_cache_free(tw->tw_prot->twsk_slab, tw);
+ kmem_cache_free(tw->tw_prot->twsk_prot->twsk_slab, tw);
module_put(owner);
}
}
diff --git a/include/net/sock.h b/include/net/sock.h
index 0fbae85c6d5..91d28957dc1 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -493,6 +493,7 @@ extern void sk_stream_kill_queues(struct sock *sk);
extern int sk_wait_data(struct sock *sk, long *timeo);
struct request_sock_ops;
+struct timewait_sock_ops;
/* Networking protocol blocks we attach to sockets.
* socket layer -> transport layer interface
@@ -557,11 +558,10 @@ struct proto {
kmem_cache_t *slab;
unsigned int obj_size;
- kmem_cache_t *twsk_slab;
- unsigned int twsk_obj_size;
atomic_t *orphan_count;
struct request_sock_ops *rsk_prot;
+ struct timewait_sock_ops *twsk_prot;
struct module *owner;
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 83b117a25c2..176221cd0cc 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -287,6 +287,9 @@ extern int tcp_rcv_established(struct sock *sk,
extern void tcp_rcv_space_adjust(struct sock *sk);
+extern int tcp_twsk_unique(struct sock *sk,
+ struct sock *sktw, void *twp);
+
static inline void tcp_dec_quickack_mode(struct sock *sk,
const unsigned int pkts)
{
diff --git a/include/net/timewait_sock.h b/include/net/timewait_sock.h
new file mode 100644
index 00000000000..2544281e1d5
--- /dev/null
+++ b/include/net/timewait_sock.h
@@ -0,0 +1,31 @@
+/*
+ * NET Generic infrastructure for Network protocols.
+ *
+ * Authors: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#ifndef _TIMEWAIT_SOCK_H
+#define _TIMEWAIT_SOCK_H
+
+#include <linux/slab.h>
+#include <net/sock.h>
+
+struct timewait_sock_ops {
+ kmem_cache_t *twsk_slab;
+ unsigned int twsk_obj_size;
+ int (*twsk_unique)(struct sock *sk,
+ struct sock *sktw, void *twp);
+};
+
+static inline int twsk_unique(struct sock *sk, struct sock *sktw, void *twp)
+{
+ if (sk->sk_prot->twsk_prot->twsk_unique != NULL)
+ return sk->sk_prot->twsk_prot->twsk_unique(sk, sktw, twp);
+ return 0;
+}
+
+#endif /* _TIMEWAIT_SOCK_H */