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-rw-r--r--include/net/request_sock.h77
1 files changed, 77 insertions, 0 deletions
diff --git a/include/net/request_sock.h b/include/net/request_sock.h
new file mode 100644
index 000000000000..9502f5587931
--- /dev/null
+++ b/include/net/request_sock.h
@@ -0,0 +1,77 @@
+/*
+ * NET Generic infrastructure for Network protocols.
+ *
+ * Definitions for request_sock
+ *
+ * Authors: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
+ *
+ * From code originally in include/net/tcp.h
+ *
+ * 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 _REQUEST_SOCK_H
+#define _REQUEST_SOCK_H
+
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <net/sock.h>
+
+struct open_request;
+struct sk_buff;
+struct dst_entry;
+struct proto;
+
+struct or_calltable {
+ int family;
+ kmem_cache_t *slab;
+ int obj_size;
+ int (*rtx_syn_ack)(struct sock *sk,
+ struct open_request *req,
+ struct dst_entry *dst);
+ void (*send_ack)(struct sk_buff *skb,
+ struct open_request *req);
+ void (*send_reset)(struct sk_buff *skb);
+ void (*destructor)(struct open_request *req);
+};
+
+/* struct open_request - mini sock to represent a connection request
+ */
+struct open_request {
+ struct open_request *dl_next; /* Must be first member! */
+ u16 mss;
+ u8 retrans;
+ u8 __pad;
+ /* The following two fields can be easily recomputed I think -AK */
+ u32 window_clamp; /* window clamp at creation time */
+ u32 rcv_wnd; /* rcv_wnd offered first time */
+ u32 ts_recent;
+ unsigned long expires;
+ struct or_calltable *class;
+ struct sock *sk;
+};
+
+static inline struct open_request *tcp_openreq_alloc(struct or_calltable *class)
+{
+ struct open_request *req = kmem_cache_alloc(class->slab, SLAB_ATOMIC);
+
+ if (req != NULL)
+ req->class = class;
+
+ return req;
+}
+
+static inline void tcp_openreq_fastfree(struct open_request *req)
+{
+ kmem_cache_free(req->class->slab, req);
+}
+
+static inline void tcp_openreq_free(struct open_request *req)
+{
+ req->class->destructor(req);
+ tcp_openreq_fastfree(req);
+}
+
+#endif /* _REQUEST_SOCK_H */