disable kernel build waring

hc

2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b

 kernel/include/linux/igmp.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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  *	Linux NET3:	Internet Group Management Protocol  [IGMP]
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  *
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@@ -5,12 +6,6 @@
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  *		Alan Cox <alan@lxorguk.ukuu.org.uk>
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  *
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  *	Extended to talk the BSD extended IGMP protocol of mrouted 3.6
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- *
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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 _LINUX_IGMP_H
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 #define _LINUX_IGMP_H
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@@ -18,6 +13,7 @@
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 #include <linux/skbuff.h>
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 #include <linux/timer.h>
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 #include <linux/in.h>
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+#include <linux/ip.h>
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 #include <linux/refcount.h>
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 #include <uapi/linux/igmp.h>
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@@ -42,7 +38,7 @@
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 	unsigned int		sl_max;
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 	unsigned int		sl_count;
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 	struct rcu_head		rcu;
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-	__be32			sl_addr[0];
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+	__be32			sl_addr[];
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 };
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 #define IP_SFLSIZE(count)	(sizeof(struct ip_sf_socklist) + \
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@@ -64,8 +60,8 @@
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 struct ip_sf_list {
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 	struct ip_sf_list	*sf_next;
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-	__be32			sf_inaddr;
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 	unsigned long		sf_count[2];	/* include/exclude counts */
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+	__be32			sf_inaddr;
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 	unsigned char		sf_gsresp;	/* include in g & s response? */
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 	unsigned char		sf_oldin;	/* change state */
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 	unsigned char		sf_crcount;	/* retrans. left to send */
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@@ -106,6 +102,14 @@
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 #define IGMPV3_QQIC(value) IGMPV3_EXP(0x80, 4, 3, value)
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 #define IGMPV3_MRC(value) IGMPV3_EXP(0x80, 4, 3, value)
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+static inline int ip_mc_may_pull(struct sk_buff *skb, unsigned int len)
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+{
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+	if (skb_transport_offset(skb) + ip_transport_len(skb) < len)
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+		return 0;
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+
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+	return pskb_may_pull(skb, len);
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+}
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+
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 extern int ip_check_mc_rcu(struct in_device *dev, __be32 mc_addr, __be32 src_addr, u8 proto);
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 extern int igmp_rcv(struct sk_buff *);
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 extern int ip_mc_join_group(struct sock *sk, struct ip_mreqn *imr);
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@@ -119,7 +123,7 @@
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 extern int ip_mc_msfget(struct sock *sk, struct ip_msfilter *msf,
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 		struct ip_msfilter __user *optval, int __user *optlen);
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 extern int ip_mc_gsfget(struct sock *sk, struct group_filter *gsf,
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-		struct group_filter __user *optval, int __user *optlen);
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+			struct sockaddr_storage __user *p);
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 extern int ip_mc_sf_allow(struct sock *sk, __be32 local, __be32 rmt,
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 			  int dif, int sdif);
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 extern void ip_mc_init_dev(struct in_device *);
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@@ -128,8 +132,14 @@
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 extern void ip_mc_down(struct in_device *);
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 extern void ip_mc_unmap(struct in_device *);
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 extern void ip_mc_remap(struct in_device *);
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-extern void ip_mc_dec_group(struct in_device *in_dev, __be32 addr);
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+extern void __ip_mc_dec_group(struct in_device *in_dev, __be32 addr, gfp_t gfp);
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+static inline void ip_mc_dec_group(struct in_device *in_dev, __be32 addr)
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+{
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+	return __ip_mc_dec_group(in_dev, addr, GFP_KERNEL);
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+}
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+extern void __ip_mc_inc_group(struct in_device *in_dev, __be32 addr,
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+			      gfp_t gfp);
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 extern void ip_mc_inc_group(struct in_device *in_dev, __be32 addr);
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-int ip_mc_check_igmp(struct sk_buff *skb, struct sk_buff **skb_trimmed);
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+int ip_mc_check_igmp(struct sk_buff *skb);
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 #endif