add ax88772_rst

hc

2024-05-10 9999e48639b3cecb08ffb37358bcba3b48161b29

 kernel/include/net/request_sock.h
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@@ -1,3 +1,4 @@
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
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 /*
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  * NET		Generic infrastructure for Network protocols.
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  *
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@@ -6,11 +7,6 @@
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  * Authors:	Arnaldo Carvalho de Melo <acme@conectiva.com.br>
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  *
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  * 		From code originally in include/net/tcp.h
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- *
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- *		This program is free software; you can redistribute it and/or
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- *		modify it under the terms of the GNU General Public License
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- *		as published by the Free Software Foundation; either version
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- *		2 of the License, or (at your option) any later version.
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  */
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 #ifndef _REQUEST_SOCK_H
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 #define _REQUEST_SOCK_H
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@@ -45,6 +41,13 @@
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41
 
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 int inet_rtx_syn_ack(const struct sock *parent, struct request_sock *req);
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43
 
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+struct saved_syn {
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+	u32 mac_hdrlen;
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+	u32 network_hdrlen;
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+	u32 tcp_hdrlen;
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+	u8 data[];
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+};
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+
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 /* struct request_sock - mini sock to represent a connection request
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  */
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 struct request_sock {
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@@ -58,13 +61,13 @@
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 	struct request_sock		*dl_next;
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 	u16				mss;
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 	u8				num_retrans; /* number of retransmits */
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-	u8				cookie_ts:1; /* syncookie: encode tcpopts in timestamp */
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+	u8				syncookie:1; /* syncookie: encode tcpopts in timestamp */
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 	u8				num_timeout:7; /* number of timeouts */
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 	u32				ts_recent;
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 	struct timer_list		rsk_timer;
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 	const struct request_sock_ops	*rsk_ops;
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 	struct sock			*sk;
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-	u32				*saved_syn;
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+	struct saved_syn		*saved_syn;
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 	u32				secid;
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 	u32				peer_secid;
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 };
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@@ -101,16 +104,16 @@
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 	sk_node_init(&req_to_sk(req)->sk_node);
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 	sk_tx_queue_clear(req_to_sk(req));
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 	req->saved_syn = NULL;
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+	req->num_timeout = 0;
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+	req->num_retrans = 0;
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+	req->sk = NULL;
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 	refcount_set(&req->rsk_refcnt, 0);
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 	return req;
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 }
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-static inline void reqsk_free(struct request_sock *req)
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+static inline void __reqsk_free(struct request_sock *req)
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 {
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-	/* temporary debugging */
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-	WARN_ON_ONCE(refcount_read(&req->rsk_refcnt) != 0);
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-
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 	req->rsk_ops->destructor(req);
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 	if (req->rsk_listener)
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 		sock_put(req->rsk_listener);
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@@ -118,6 +121,12 @@
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 	kmem_cache_free(req->rsk_ops->slab, req);
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 }
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+static inline void reqsk_free(struct request_sock *req)
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+{
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+	WARN_ON_ONCE(refcount_read(&req->rsk_refcnt) != 0);
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+	__reqsk_free(req);
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+}
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+
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 static inline void reqsk_put(struct request_sock *req)
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 {
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 	if (refcount_dec_and_test(&req->rsk_refcnt))