debug lk

hc

2024-02-20 e636c8d336489bf3eed5878299e6cc045bbad077

 kernel/net/ipv4/udplite.c
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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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  *  UDPLITE     An implementation of the UDP-Lite protocol (RFC 3828).
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  *
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@@ -5,10 +6,6 @@
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  *
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  *  Changes:
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  *  Fixes:
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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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 #define pr_fmt(fmt) "UDPLite: " fmt
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@@ -20,14 +17,22 @@
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 struct udp_table 	udplite_table __read_mostly;
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 EXPORT_SYMBOL(udplite_table);
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+/* Designate sk as UDP-Lite socket */
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+static int udplite_sk_init(struct sock *sk)
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+{
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+	udp_init_sock(sk);
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+	udp_sk(sk)->pcflag = UDPLITE_BIT;
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+	return 0;
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+}
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+
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 static int udplite_rcv(struct sk_buff *skb)
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 {
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 	return __udp4_lib_rcv(skb, &udplite_table, IPPROTO_UDPLITE);
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 }
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-static void udplite_err(struct sk_buff *skb, u32 info)
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+static int udplite_err(struct sk_buff *skb, u32 info)
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 {
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-	__udp4_lib_err(skb, info, &udplite_table);
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+	return __udp4_lib_err(skb, info, &udplite_table);
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 }
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 static const struct net_protocol udplite_protocol = {
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@@ -53,15 +58,14 @@
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 	.sendpage	   = udp_sendpage,
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 	.hash		   = udp_lib_hash,
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 	.unhash		   = udp_lib_unhash,
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+	.rehash		   = udp_v4_rehash,
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 	.get_port	   = udp_v4_get_port,
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 	.memory_allocated  = &udp_memory_allocated,
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 	.sysctl_mem	   = sysctl_udp_mem,
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+	.sysctl_wmem_offset = offsetof(struct net, ipv4.sysctl_udp_wmem_min),
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+	.sysctl_rmem_offset = offsetof(struct net, ipv4.sysctl_udp_rmem_min),
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 	.obj_size	   = sizeof(struct udp_sock),
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 	.h.udp_table	   = &udplite_table,
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-#ifdef CONFIG_COMPAT
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-	.compat_setsockopt = compat_udp_setsockopt,
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-	.compat_getsockopt = compat_udp_getsockopt,
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-#endif
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 };
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 EXPORT_SYMBOL(udplite_prot);
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