static void
vrrp_vmac_handler(vector_t *strvec)
{
vrrp_t *vrrp = LIST_TAIL_DATA(vrrp_data->vrrp);
vrrp->vmac |= 1;
if (!vrrp->saddr)
vrrp->saddr = IF_ADDR(vrrp->ifp);
if (vector_size(strvec) == 2) {
strncpy(vrrp->vmac_ifname, vector_slot(strvec, 1),
IFNAMSIZ - 1);
} else if (vrrp->vrid) {
snprintf(vrrp->vmac_ifname, IFNAMSIZ, "vrrp.%d", vrrp->vrid);
}
if (strlen(vrrp->vmac_ifname)) {
log_message(LOG_INFO, "vmac_ifname=%s for vrrp_instace %s"
, vrrp->vmac_ifname
, vrrp->iname);
}
if (vrrp->ifp && !(vrrp->vmac & 2)) {
unsigned int base_ifindex = vrrp->ifp->base_ifindex;
netlink_link_add_vmac(vrrp);
/* restore base ifindex (deleted when adding VMAC) */
vrrp->ifp->base_ifindex = base_ifindex;
}
/* flag interface as a VMAC interface */
vrrp->ifp->vmac = 1;
}
int
if_join_vrrp_group(sa_family_t family, int *sd, interface_t *ifp, int proto)
{
struct ip_mreqn imr;
struct ipv6_mreq imr6;
int ret = 0;
if (*sd < 0)
return -1;
/* -> outbound processing option
* join the multicast group.
* binding the socket to the interface for outbound multicast
* traffic.
*/
if (family == AF_INET) {
memset(&imr, 0, sizeof(imr));
imr.imr_multiaddr.s_addr = htonl(INADDR_VRRP_GROUP);
imr.imr_address.s_addr = IF_ADDR(ifp);
imr.imr_ifindex = IF_INDEX(ifp);
/* -> Need to handle multicast convergance after takeover.
* We retry until multicast is available on the interface.
*/
ret = setsockopt(*sd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
(char *) &imr, sizeof(struct ip_mreqn));
} else {
memset(&imr6, 0, sizeof(imr6));
imr6.ipv6mr_multiaddr.s6_addr16[0] = htons(0xff02);
imr6.ipv6mr_multiaddr.s6_addr16[7] = htons(0x12);
imr6.ipv6mr_interface = IF_INDEX(ifp);
ret = setsockopt(*sd, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP,
(char *) &imr6, sizeof(struct ipv6_mreq));
}
if (ret < 0) {
log_message(LOG_INFO, "cant do IP%s_ADD_MEMBERSHIP errno=%s (%d)",
(family == AF_INET) ? "" : "V6", strerror(errno), errno);
close(*sd);
*sd = -1;
}
return *sd;
}
static void
vrrp_vmac_handler(vector_t *strvec)
{
vrrp_t *vrrp = LIST_TAIL_DATA(vrrp_data->vrrp);
vrrp->vmac_flags |= VRRP_VMAC_FL_SET;
if (!vrrp->saddr.ss_family && vrrp->family == AF_INET)
inet_ip4tosockaddr(IF_ADDR(vrrp->ifp), &vrrp->saddr);
if (vector_size(strvec) == 2) {
strncpy(vrrp->vmac_ifname, vector_slot(strvec, 1),
IFNAMSIZ - 1);
} else if (vrrp->vrid) {
snprintf(vrrp->vmac_ifname, IFNAMSIZ, "vrrp.%d", vrrp->vrid);
} else {
return;
}
netlink_link_add_vmac(vrrp);
}
static void
vrrp_vmac_handler(vector strvec)
{
vrrp_rt *vrrp = LIST_TAIL_DATA(vrrp_data->vrrp);
vrrp->vmac = 1;
if (!(vrrp->mcast_saddr))
vrrp->mcast_saddr = IF_ADDR(vrrp->ifp);
if (strvec && (strvec->allocated == 2))
strncpy(vrrp->vmac_ifname, VECTOR_SLOT(strvec, 1),
IFNAMSIZ - 1);
else
snprintf(vrrp->vmac_ifname, IFNAMSIZ, "vrrp.%d", vrrp->vrid);
log_message(LOG_INFO, "vrrp_vmac_handler: vmac ifname is %s",
vrrp->vmac_ifname);
if (vrrp->ifp && !(vrrp->vmac & 2))
netlink_link_add_vmac(vrrp);
}
int
if_leave_vrrp_group(sa_family_t family, int sd, interface_t *ifp)
{
struct ip_mreqn imr;
struct ipv6_mreq imr6;
int ret = 0;
/* If fd is -1 then we add a membership trouble */
if (sd < 0 || !ifp)
return -1;
/* Leaving the VRRP multicast group */
if (family == AF_INET) {
memset(&imr, 0, sizeof(imr));
/* FIXME: change this to use struct ip_mreq */
imr.imr_multiaddr.s_addr = htonl(INADDR_VRRP_GROUP);
imr.imr_address.s_addr = IF_ADDR(ifp);
imr.imr_ifindex = IF_INDEX(ifp);
ret = setsockopt(sd, IPPROTO_IP, IP_DROP_MEMBERSHIP,
(char *) &imr, sizeof (struct ip_mreqn));
} else {
memset(&imr6, 0, sizeof(imr6));
/* rfc5798.5.1.2.2 : destination IPv6 mcast group is
* ff02:0:0:0:0:0:0:12.
*/
imr6.ipv6mr_multiaddr.s6_addr16[0] = htons(0xff02);
imr6.ipv6mr_multiaddr.s6_addr16[7] = htons(0x12);
imr6.ipv6mr_interface = IF_INDEX(ifp);
ret = setsockopt(sd, IPPROTO_IPV6, IPV6_DROP_MEMBERSHIP,
(char *) &imr6, sizeof(struct ipv6_mreq));
}
if (ret < 0) {
log_message(LOG_INFO, "cant do IP%s_DROP_MEMBERSHIP errno=%s (%d)",
(family == AF_INET) ? "" : "V6", strerror(errno), errno);
close(sd);
return -1;
}
/* Finally close the desc */
close(sd);
return 0;
}