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igmp: Optimize code by always skipping the first entry in the linked groups list - it is always the "allsystems" entry

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This commit is contained in:
Dirk Ziegelmeier 2016-10-01 17:28:36 +02:00
parent df5a79966d
commit 8c52afb6ca
1 changed files with 14 additions and 7 deletions
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21
src/core/ipv4/igmp.c
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@ -195,10 +195,13 @@ igmp_report_groups(struct netif *netif)
LWIP_DEBUGF(IGMP_DEBUG, ("igmp_report_groups: sending IGMP reports on if %p\n", (void*)netif));
/* Skip the first group in the list, it is always the allsystems group added in igmp_start() */
if(group != NULL) {
group = group->next;
}
while (group != NULL) {
if (!(ip4_addr_cmp(&(group->group_address), &allsystems))) {
igmp_delaying_member(group, IGMP_JOIN_DELAYING_MEMBER_TMR);
}
igmp_delaying_member(group, IGMP_JOIN_DELAYING_MEMBER_TMR);
group = group->next;
}
}
@ -368,11 +371,15 @@ igmp_input(struct pbuf *p, struct netif *inp, const ip4_addr_t *dest)
}
groupref = netif_igmp_data(inp);
/* Do not send messages on the all systems group address! */
/* Skip the first group in the list, it is always the allsystems group added in igmp_start() */
if(group != NULL) {
group = group->next;
}
while (groupref) {
/* Do not send messages on the all systems group address! */
if (!(ip4_addr_cmp(&(groupref->group_address), &allsystems))) {
igmp_delaying_member(groupref, igmp->igmp_maxresp);
}
igmp_delaying_member(groupref, igmp->igmp_maxresp);
groupref = groupref->next;
}
} else {