change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/include/net/inet_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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  * INET		An implementation of the TCP/IP protocol suite for the LINUX
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  *		operating system.  INET is implemented using the  BSD Socket
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@@ -7,11 +8,6 @@
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  *
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  * Authors:	Many, reorganised here by
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  * 		Arnaldo Carvalho de Melo <acme@mandriva.com>
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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 _INET_SOCK_H
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 #define _INET_SOCK_H
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@@ -56,7 +52,7 @@
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 	unsigned char	router_alert;
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 	unsigned char	cipso;
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 	unsigned char	__pad2;
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-	unsigned char	__data[0];
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+	unsigned char	__data[];
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 };
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 struct ip_options_rcu {
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@@ -111,7 +107,8 @@
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 static inline u32 inet_request_mark(const struct sock *sk, struct sk_buff *skb)
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 {
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-	if (!sk->sk_mark && sock_net(sk)->ipv4.sysctl_tcp_fwmark_accept)
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+	if (!sk->sk_mark &&
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+	    READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_fwmark_accept))
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 		return skb->mark;
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 	return sk->sk_mark;
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@@ -120,14 +117,47 @@
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 static inline int inet_request_bound_dev_if(const struct sock *sk,
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 					    struct sk_buff *skb)
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 {
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+	int bound_dev_if = READ_ONCE(sk->sk_bound_dev_if);
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 #ifdef CONFIG_NET_L3_MASTER_DEV
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 	struct net *net = sock_net(sk);
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-	if (!sk->sk_bound_dev_if && net->ipv4.sysctl_tcp_l3mdev_accept)
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+	if (!bound_dev_if && READ_ONCE(net->ipv4.sysctl_tcp_l3mdev_accept))
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 		return l3mdev_master_ifindex_by_index(net, skb->skb_iif);
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 #endif
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-	return sk->sk_bound_dev_if;
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+	return bound_dev_if;
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+}
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+
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+static inline int inet_sk_bound_l3mdev(const struct sock *sk)
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+{
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+#ifdef CONFIG_NET_L3_MASTER_DEV
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+	struct net *net = sock_net(sk);
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+
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+	if (!READ_ONCE(net->ipv4.sysctl_tcp_l3mdev_accept))
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+		return l3mdev_master_ifindex_by_index(net,
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+						      sk->sk_bound_dev_if);
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+#endif
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+
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+	return 0;
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+}
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+
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+static inline bool inet_bound_dev_eq(bool l3mdev_accept, int bound_dev_if,
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+				     int dif, int sdif)
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+{
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+	if (!bound_dev_if)
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+		return !sdif || l3mdev_accept;
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+	return bound_dev_if == dif || bound_dev_if == sdif;
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+}
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+
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+static inline bool inet_sk_bound_dev_eq(struct net *net, int bound_dev_if,
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+					int dif, int sdif)
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+{
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+#if IS_ENABLED(CONFIG_NET_L3_MASTER_DEV)
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+	return inet_bound_dev_eq(!!READ_ONCE(net->ipv4.sysctl_tcp_l3mdev_accept),
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+				 bound_dev_if, dif, sdif);
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+#else
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+	return inet_bound_dev_eq(true, bound_dev_if, dif, sdif);
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+#endif
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 }
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 struct inet_cork {
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@@ -143,6 +173,7 @@
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 	char			priority;
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 	__u16			gso_size;
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 	u64			transmit_time;
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+	u32			mark;
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 };
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 struct inet_cork_full {
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@@ -207,6 +238,7 @@
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 				mc_all:1,
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 				nodefrag:1;
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 	__u8			bind_address_no_port:1,
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+				recverr_rfc4884:1,
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 				defer_connect:1; /* Indicates that fastopen_connect is set
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 						  * and cookie exists so we defer connect
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 						  * until first data frame is written
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@@ -277,13 +309,6 @@
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 	memcpy(inet_sk(sk_to) + 1, inet_sk(sk_from) + 1,
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 	       sk_from->sk_prot->obj_size - ancestor_size);
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 }
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-#if !(IS_ENABLED(CONFIG_IPV6))
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-static inline void inet_sk_copy_descendant(struct sock *sk_to,
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-					   const struct sock *sk_from)
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-{
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-	__inet_sk_copy_descendant(sk_to, sk_from, sizeof(struct inet_sock));
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-}
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-#endif
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 int inet_sk_rebuild_header(struct sock *sk);
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@@ -357,7 +382,7 @@
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 static inline bool inet_can_nonlocal_bind(struct net *net,
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 					  struct inet_sock *inet)
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 {
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-	return net->ipv4.sysctl_ip_nonlocal_bind ||
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+	return READ_ONCE(net->ipv4.sysctl_ip_nonlocal_bind) ||
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 		inet->freebind || inet->transparent;
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 }
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