Initial import

1 files changed, 134 insertions, 0 deletions

diff --git a/include/linux/igmp.h b/include/linux/igmp.h
new file mode 100644
index 000000000..2c677afee
--- /dev/null
+++ b/include/linux/igmp.h
@@ -0,0 +1,134 @@
+/*
+ *	Linux NET3:	Internet Group Management Protocol  [IGMP]
+ *
+ *	Authors:
+ *		Alan Cox <alan@lxorguk.ukuu.org.uk>
+ *
+ *	Extended to talk the BSD extended IGMP protocol of mrouted 3.6
+ *
+ *
+ *	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 _LINUX_IGMP_H
+#define _LINUX_IGMP_H
+
+#include <linux/skbuff.h>
+#include <linux/timer.h>
+#include <linux/in.h>
+#include <uapi/linux/igmp.h>
+
+static inline struct igmphdr *igmp_hdr(const struct sk_buff *skb)
+{
+	return (struct igmphdr *)skb_transport_header(skb);
+}
+
+static inline struct igmpv3_report *
+			igmpv3_report_hdr(const struct sk_buff *skb)
+{
+	return (struct igmpv3_report *)skb_transport_header(skb);
+}
+
+static inline struct igmpv3_query *
+			igmpv3_query_hdr(const struct sk_buff *skb)
+{
+	return (struct igmpv3_query *)skb_transport_header(skb);
+}
+
+extern int sysctl_igmp_max_memberships;
+extern int sysctl_igmp_max_msf;
+extern int sysctl_igmp_qrv;
+
+struct ip_sf_socklist {
+	unsigned int		sl_max;
+	unsigned int		sl_count;
+	struct rcu_head		rcu;
+	__be32			sl_addr[0];
+};
+
+#define IP_SFLSIZE(count)	(sizeof(struct ip_sf_socklist) + \
+	(count) * sizeof(__be32))
+
+#define IP_SFBLOCK	10	/* allocate this many at once */
+
+/* ip_mc_socklist is real list now. Speed is not argument;
+   this list never used in fast path code
+ */
+
+struct ip_mc_socklist {
+	struct ip_mc_socklist __rcu *next_rcu;
+	struct ip_mreqn		multi;
+	unsigned int		sfmode;		/* MCAST_{INCLUDE,EXCLUDE} */
+	struct ip_sf_socklist __rcu	*sflist;
+	struct rcu_head		rcu;
+};
+
+struct ip_sf_list {
+	struct ip_sf_list	*sf_next;
+	__be32			sf_inaddr;
+	unsigned long		sf_count[2];	/* include/exclude counts */
+	unsigned char		sf_gsresp;	/* include in g & s response? */
+	unsigned char		sf_oldin;	/* change state */
+	unsigned char		sf_crcount;	/* retrans. left to send */
+};
+
+struct ip_mc_list {
+	struct in_device	*interface;
+	__be32			multiaddr;
+	unsigned int		sfmode;
+	struct ip_sf_list	*sources;
+	struct ip_sf_list	*tomb;
+	unsigned long		sfcount[2];
+	union {
+		struct ip_mc_list *next;
+		struct ip_mc_list __rcu *next_rcu;
+	};
+	struct ip_mc_list __rcu *next_hash;
+	struct timer_list	timer;
+	int			users;
+	atomic_t		refcnt;
+	spinlock_t		lock;
+	char			tm_running;
+	char			reporter;
+	char			unsolicit_count;
+	char			loaded;
+	unsigned char		gsquery;	/* check source marks? */
+	unsigned char		crcount;
+	struct rcu_head		rcu;
+};
+
+/* V3 exponential field decoding */
+#define IGMPV3_MASK(value, nb) ((nb)>=32 ? (value) : ((1<<(nb))-1) & (value))
+#define IGMPV3_EXP(thresh, nbmant, nbexp, value) \
+	((value) < (thresh) ? (value) : \
+        ((IGMPV3_MASK(value, nbmant) | (1<<(nbmant))) << \
+         (IGMPV3_MASK((value) >> (nbmant), nbexp) + (nbexp))))
+
+#define IGMPV3_QQIC(value) IGMPV3_EXP(0x80, 4, 3, value)
+#define IGMPV3_MRC(value) IGMPV3_EXP(0x80, 4, 3, value)
+
+extern int ip_check_mc_rcu(struct in_device *dev, __be32 mc_addr, __be32 src_addr, u16 proto);
+extern int igmp_rcv(struct sk_buff *);
+extern int ip_mc_join_group(struct sock *sk, struct ip_mreqn *imr);
+extern int ip_mc_leave_group(struct sock *sk, struct ip_mreqn *imr);
+extern void ip_mc_drop_socket(struct sock *sk);
+extern int ip_mc_source(int add, int omode, struct sock *sk,
+		struct ip_mreq_source *mreqs, int ifindex);
+extern int ip_mc_msfilter(struct sock *sk, struct ip_msfilter *msf,int ifindex);
+extern int ip_mc_msfget(struct sock *sk, struct ip_msfilter *msf,
+		struct ip_msfilter __user *optval, int __user *optlen);
+extern int ip_mc_gsfget(struct sock *sk, struct group_filter *gsf,
+		struct group_filter __user *optval, int __user *optlen);
+extern int ip_mc_sf_allow(struct sock *sk, __be32 local, __be32 rmt, int dif);
+extern void ip_mc_init_dev(struct in_device *);
+extern void ip_mc_destroy_dev(struct in_device *);
+extern void ip_mc_up(struct in_device *);
+extern void ip_mc_down(struct in_device *);
+extern void ip_mc_unmap(struct in_device *);
+extern void ip_mc_remap(struct in_device *);
+extern void ip_mc_dec_group(struct in_device *in_dev, __be32 addr);
+extern void ip_mc_inc_group(struct in_device *in_dev, __be32 addr);
+
+#endif