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authorArnaldo Carvalho de Melo <acme@mandriva.com>2005-12-13 23:25:19 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-01-03 13:10:54 -0800
commit6d6ee43e0b8b8d4847627fd43739b98ec2b9404f (patch)
treea2a66381d2351610c81362bf218e743f6ccf56ef /include
parentfc44b9805324c0ad2733ea2feea9935cc056709d (diff)
[TWSK]: Introduce struct timewait_sock_ops
So that we can share several timewait sockets related functions and make the timewait mini sockets infrastructure closer to the request mini sockets one. Next changesets will take advantage of this, moving more code out of TCP and DCCP v4 and v6 to common infrastructure. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-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 */