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Differential D20080 Diff 58990 head/sys/netinet/in_var.h

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head/sys/netinet/in_var.h

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/* /*
* IPv4 multicast PCB-layer group filter descriptor. * IPv4 multicast PCB-layer group filter descriptor.
*/ */
struct in_mfilter { struct in_mfilter {
struct ip_msource_tree imf_sources; /* source list for (S,G) */ struct ip_msource_tree imf_sources; /* source list for (S,G) */
u_long imf_nsrc; /* # of source entries */ u_long imf_nsrc; /* # of source entries */
uint8_t imf_st[2]; /* state before/at commit */ uint8_t imf_st[2]; /* state before/at commit */
struct in_multi *imf_inm; /* associated multicast address */
STAILQ_ENTRY(in_mfilter) imf_entry; /* list entry */
}; };
/*
* Helper types and functions for IPv4 multicast filters.
*/
STAILQ_HEAD(ip_mfilter_head, in_mfilter);
struct in_mfilter *ip_mfilter_alloc(int mflags, int st0, int st1);
void ip_mfilter_free(struct in_mfilter *);
static inline void
ip_mfilter_init(struct ip_mfilter_head *head)
{
STAILQ_INIT(head);
}
static inline struct in_mfilter *
ip_mfilter_first(const struct ip_mfilter_head *head)
{
return (STAILQ_FIRST(head));
}
static inline void
ip_mfilter_insert(struct ip_mfilter_head *head, struct in_mfilter *imf)
{
STAILQ_INSERT_TAIL(head, imf, imf_entry);
}
static inline void
ip_mfilter_remove(struct ip_mfilter_head *head, struct in_mfilter *imf)
{
STAILQ_REMOVE(head, imf, in_mfilter, imf_entry);
}
#define IP_MFILTER_FOREACH(imf, head) \
STAILQ_FOREACH(imf, head, imf_entry)
static inline size_t
ip_mfilter_count(struct ip_mfilter_head *head)
{
struct in_mfilter *imf;
size_t num = 0;
STAILQ_FOREACH(imf, head, imf_entry)
num++;
return (num);
}
/* /*
* IPv4 group descriptor. * IPv4 group descriptor.
* *
* For every entry on an ifnet's if_multiaddrs list which represents * For every entry on an ifnet's if_multiaddrs list which represents
* an IP multicast group, there is one of these structures. * an IP multicast group, there is one of these structures.
* *
* If any source filters are present, then a node will exist in the RB-tree * If any source filters are present, then a node will exist in the RB-tree
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