/* Get the data pointer of the specified VRF. If not found, create one. */
void *
vrf_info_get (vrf_id_t vrf_id)
{
struct vrf *vrf = vrf_get (vrf_id);
return vrf->info;
}
/* Get the interface list of the specified VRF. Create one if not find. */
struct list *
vrf_iflist_get (vrf_id_t vrf_id)
{
struct vrf * vrf = vrf_get (vrf_id);
return vrf->iflist;
}
static void netlink_vrf_change(struct nlmsghdr *h, struct rtattr *tb,
const char *name)
{
struct ifinfomsg *ifi;
struct rtattr *linkinfo[IFLA_INFO_MAX + 1];
struct rtattr *attr[IFLA_VRF_MAX + 1];
struct vrf *vrf;
struct zebra_vrf *zvrf;
uint32_t nl_table_id;
ifi = NLMSG_DATA(h);
memset(linkinfo, 0, sizeof linkinfo);
parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb);
if (!linkinfo[IFLA_INFO_DATA]) {
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug(
"%s: IFLA_INFO_DATA missing from VRF message: %s",
__func__, name);
return;
}
memset(attr, 0, sizeof attr);
parse_rtattr_nested(attr, IFLA_VRF_MAX, linkinfo[IFLA_INFO_DATA]);
if (!attr[IFLA_VRF_TABLE]) {
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug(
"%s: IFLA_VRF_TABLE missing from VRF message: %s",
__func__, name);
return;
}
nl_table_id = *(uint32_t *)RTA_DATA(attr[IFLA_VRF_TABLE]);
if (h->nlmsg_type == RTM_NEWLINK) {
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug("RTM_NEWLINK for VRF %s(%u) table %u", name,
ifi->ifi_index, nl_table_id);
/*
* vrf_get is implied creation if it does not exist
*/
vrf = vrf_get((vrf_id_t)ifi->ifi_index,
name); // It would create vrf
if (!vrf) {
flog_err(LIB_ERR_INTERFACE, "VRF %s id %u not created",
name, ifi->ifi_index);
return;
}
/*
* This is the only place that we get the actual kernel table_id
* being used. We need it to set the table_id of the routes
* we are passing to the kernel.... And to throw some totally
* awesome parties. that too.
*
* At this point we *must* have a zvrf because the vrf_create
* callback creates one. We *must* set the table id
* before the vrf_enable because of( at the very least )
* static routes being delayed for installation until
* during the vrf_enable callbacks.
*/
zvrf = (struct zebra_vrf *)vrf->info;
zvrf->table_id = nl_table_id;
/* Enable the created VRF. */
if (!vrf_enable(vrf)) {
flog_err(LIB_ERR_INTERFACE,
"Failed to enable VRF %s id %u", name,
ifi->ifi_index);
return;
}
} else // h->nlmsg_type == RTM_DELLINK
{
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug("RTM_DELLINK for VRF %s(%u)", name,
ifi->ifi_index);
vrf = vrf_lookup_by_id((vrf_id_t)ifi->ifi_index);
if (!vrf) {
zlog_warn("%s: vrf not found", __func__);
return;
}
vrf_delete(vrf);
}
}
