void delete_single_kernel_cache(mrtentry_t *mrt, kernel_cache_t *node)
{
if (!mrt || !node)
return;
if (!node->prev) {
mrt->kernel_cache = node->next;
if (!mrt->kernel_cache)
mrt->flags &= ~(MRTF_KERNEL_CACHE | MRTF_MFC_CLONE_SG);
} else {
node->prev->next = node->next;
}
if (node->next)
node->next->prev = node->prev;
IF_DEBUG(DEBUG_MFC) {
logit(LOG_DEBUG, 0, "Deleting MFC entry for source %s and group %s",
inet_fmt(node->source, s1, sizeof(s1)),
inet_fmt(node->group, s2, sizeof(s2)));
}
k_del_mfc(igmp_socket, node->source, node->group);
free(node);
}
void delete_single_kernel_cache_addr(mrtentry_t *mrt, uint32_t source, uint32_t group)
{
uint32_t source_h;
uint32_t group_h;
kernel_cache_t *node;
if (!mrt)
return;
source_h = ntohl(source);
group_h = ntohl(group);
/* Find the exact (S,G) kernel_cache entry */
for (node = mrt->kernel_cache; node; node = node->next) {
if (ntohl(node->group) < group_h)
continue;
if (ntohl(node->group) > group_h)
return; /* Not found */
if (ntohl(node->source) < source_h)
continue;
if (ntohl(node->source) > source_h)
return; /* Not found */
/* Found exact match */
break;
}
if (!node)
return;
/* Found. Delete it */
if (!node->prev) {
mrt->kernel_cache = node->next;
if (!mrt->kernel_cache)
mrt->flags &= ~(MRTF_KERNEL_CACHE | MRTF_MFC_CLONE_SG);
} else{
node->prev->next = node->next;
}
if (node->next)
node->next->prev = node->prev;
IF_DEBUG(DEBUG_MFC) {
logit(LOG_DEBUG, 0, "Deleting MFC entry for source %s and group %s",
inet_fmt(node->source, s1, sizeof(s1)),
inet_fmt(node->group, s2, sizeof(s2)));
}
logit(LOG_DEBUG, 0, "delete_single_kernel_cache_addr: SG");
k_del_mfc(igmp_socket, node->source, node->group);
free(node);
}
/*
* Delete all kernel cache for this mrtentry
*/
void delete_mrtentry_all_kernel_cache(mrtentry_t *mrt)
{
kernel_cache_t *prev;
kernel_cache_t *node;
if (!(mrt->flags & MRTF_KERNEL_CACHE))
return;
/* Free all kernel_cache entries */
for (node = mrt->kernel_cache; node; ) {
prev = node;
node = node->next;
k_del_mfc(igmp_socket, prev->source, prev->group);
free(prev);
}
mrt->kernel_cache = NULL;
/* turn off the cache flag(s) */
mrt->flags &= ~(MRTF_KERNEL_CACHE | MRTF_MFC_CLONE_SG);
}
