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zebra: Add nh_vrf_id to rib_add

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Add to the rib_add function the ability to pass in the nexthops
vrf.

Additionally when we decode the netlink message from the linux
kernel, properly figure out the nexthops vrf_id.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2018-01-08 10:21:09 -05:00
parent 99b9d9609f
commit 8795f90448
6 changed files with 39 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
zebra/connected.c
View File

@ -238,10 +238,12 @@ void connected_up(struct interface *ifp, struct connected *ifc)
break;
}
rib_add(afi, SAFI_UNICAST, ifp->vrf_id, ZEBRA_ROUTE_CONNECT, 0, 0,
rib_add(afi, SAFI_UNICAST, ifp->vrf_id, ifp->vrf_id,
ZEBRA_ROUTE_CONNECT, 0, 0,
&p, NULL, &nh, RT_TABLE_MAIN, ifp->metric, 0, 0, 0);
rib_add(afi, SAFI_MULTICAST, ifp->vrf_id, ZEBRA_ROUTE_CONNECT, 0, 0,
rib_add(afi, SAFI_MULTICAST, ifp->vrf_id, ifp->vrf_id,
ZEBRA_ROUTE_CONNECT, 0, 0,
&p, NULL, &nh, RT_TABLE_MAIN, ifp->metric, 0, 0, 0);
if (IS_ZEBRA_DEBUG_RIB_DETAILED) {

4
zebra/kernel_socket.c
View File

@ -1048,7 +1048,7 @@ void rtm_read(struct rt_msghdr *rtm)
if (rtm->rtm_type == RTM_GET || rtm->rtm_type == RTM_ADD
|| rtm->rtm_type == RTM_CHANGE)
rib_add(AFI_IP, SAFI_UNICAST, VRF_DEFAULT,
rib_add(AFI_IP, SAFI_UNICAST, VRF_DEFAULT, VRF_DEFAULT,
ZEBRA_ROUTE_KERNEL, 0, zebra_flags, &p, NULL,
&nh, 0, 0, 0, 0, 0);
else
@ -1096,7 +1096,7 @@ void rtm_read(struct rt_msghdr *rtm)
if (rtm->rtm_type == RTM_GET || rtm->rtm_type == RTM_ADD
|| rtm->rtm_type == RTM_CHANGE)
rib_add(AFI_IP6, SAFI_UNICAST, VRF_DEFAULT,
rib_add(AFI_IP6, SAFI_UNICAST, VRF_DEFAULT, VRF_DEFAULT,
ZEBRA_ROUTE_KERNEL, 0, zebra_flags, &p, NULL,
&nh, 0, 0, 0, 0, 0);
else

4
zebra/rib.h
View File

@ -294,8 +294,8 @@ extern void rib_uninstall_kernel(struct route_node *rn, struct route_entry *re);
/* NOTE:
* All rib_add function will not just add prefix into RIB, but
* also implicitly withdraw equal prefix of same type. */
extern int rib_add(afi_t afi, safi_t safi, vrf_id_t vrf_id, int type,
u_short instance, int flags, struct prefix *p,
extern int rib_add(afi_t afi, safi_t safi, vrf_id_t vrf_id, vrf_id_t nh_vrf_id,
int type, u_short instance, int flags, struct prefix *p,
struct prefix_ipv6 *src_p, const struct nexthop *nh,
u_int32_t table_id, u_int32_t metric, u_int32_t mtu,
uint8_t distance, route_tag_t tag);

24
zebra/rt_netlink.c
View File

@ -403,6 +403,9 @@ static int netlink_route_change_read_unicast(struct sockaddr_nl *snl,
afi = AFI_IP6;
if (h->nlmsg_type == RTM_NEWROUTE) {
struct interface *ifp;
vrf_id_t nh_vrf_id = vrf_id;
if (!tb[RTA_MULTIPATH]) {
struct nexthop nh;
size_t sz = (afi == AFI_IP) ? 4 : 16;
@ -434,7 +437,14 @@ static int netlink_route_change_read_unicast(struct sockaddr_nl *snl,
if (gate)
memcpy(&nh.gate, gate, sz);
rib_add(afi, SAFI_UNICAST, vrf_id, proto,
if (index) {
ifp = if_lookup_by_index(index,
VRF_UNKNOWN);
if (ifp)
nh_vrf_id = ifp->vrf_id;
}
rib_add(afi, SAFI_UNICAST, vrf_id, nh_vrf_id, proto,
0, flags, &p, NULL, &nh, table, metric,
mtu, distance, tag);
} else {
@ -465,6 +475,18 @@ static int netlink_route_change_read_unicast(struct sockaddr_nl *snl,
break;
index = rtnh->rtnh_ifindex;
if (index) {
/*
* Yes we are looking this up
* for every nexthop and just
* using the last one looked
* up right now
*/
ifp = if_lookup_by_index(index,
VRF_UNKNOWN);
if (ifp)
re->nh_vrf_id = ifp->vrf_id;
}
gate = 0;
if (rtnh->rtnh_len > sizeof(*rtnh)) {
memset(tb, 0, sizeof(tb));

5
zebra/rtread_getmsg.c
View File

@ -97,8 +97,9 @@ static void handle_route_entry(mib2_ipRouteEntry_t *routeEntry)
nh.type = NEXTHOP_TYPE_IPV4;
nh.gate.ipv4.s_addr = routeEntry->ipRouteNextHop;
rib_add(AFI_IP, SAFI_UNICAST, VRF_DEFAULT, ZEBRA_ROUTE_KERNEL, 0,
zebra_flags, &prefix, NULL, &nh, 0, 0, 0, 0, 0);
rib_add(AFI_IP, SAFI_UNICAST, VRF_DEFAULT, VRF_DEFAULT,
ZEBRA_ROUTE_KERNEL, 0, zebra_flags, &prefix, NULL,
&nh, 0, 0, 0, 0, 0);
}
void route_read(struct zebra_ns *zns)

9
zebra/zebra_rib.c
View File

@ -2497,9 +2497,10 @@ void rib_delete(afi_t afi, safi_t safi, vrf_id_t vrf_id, int type,
}
int rib_add(afi_t afi, safi_t safi, vrf_id_t vrf_id, int type, u_short instance,
int flags, struct prefix *p, struct prefix_ipv6 *src_p,
const struct nexthop *nh, u_int32_t table_id, u_int32_t metric,
int rib_add(afi_t afi, safi_t safi, vrf_id_t vrf_id, vrf_id_t nh_vrf_id,
int type, u_short instance, int flags, struct prefix *p,
struct prefix_ipv6 *src_p, const struct nexthop *nh,
u_int32_t table_id, u_int32_t metric,
u_int32_t mtu, uint8_t distance, route_tag_t tag)
{
struct route_entry *re;
@ -2515,7 +2516,7 @@ int rib_add(afi_t afi, safi_t safi, vrf_id_t vrf_id, int type, u_short instance,
re->mtu = mtu;
re->table = table_id;
re->vrf_id = vrf_id;
re->nh_vrf_id = vrf_id;
re->nh_vrf_id = nh_vrf_id;
re->nexthop_num = 0;
re->uptime = time(NULL);
re->tag = tag;