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staticd: Allow daemon to have backup static routes

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Modify staticd to allow it to have backup static routes
with higher admin distance.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2018-06-21 21:55:38 -04:00
parent 40ecd8e46d
commit 8bc8de2c15
4 changed files with 40 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
staticd/static_nht.c
View File

@ -70,8 +70,12 @@ void static_nht_update(struct prefix *p, uint32_t nh_num,
if (orig != si->nh_valid)
reinstall = true;
if (reinstall) {
static_zebra_route_add(rn, si, vrf_id,
SAFI_UNICAST, true);
reinstall = false;
}
}
if (reinstall)
static_zebra_route_add(rn, vrf_id, SAFI_UNICAST, true);
}
}

28
staticd/static_routes.c
View File

@ -33,7 +33,8 @@
#include "static_zebra.h"
/* Install static route into rib. */
static void static_install_route(struct route_node *rn, safi_t safi)
static void static_install_route(struct route_node *rn,
struct static_route *si_changed, safi_t safi)
{
struct static_route *si;
@ -42,19 +43,20 @@ static void static_install_route(struct route_node *rn, safi_t safi)
si = rn->info;
if (si)
static_zebra_route_add(rn, si->vrf_id, safi, true);
static_zebra_route_add(rn, si_changed, si->vrf_id, safi, true);
}
/* Uninstall static route from RIB. */
static void static_uninstall_route(vrf_id_t vrf_id, safi_t safi,
struct route_node *rn)
struct route_node *rn,
struct static_route *si_changed)
{
if (rn->info)
static_zebra_route_add(rn, vrf_id, safi, true);
static_zebra_route_add(rn, si_changed, vrf_id, safi, true);
else
static_zebra_route_add(rn, vrf_id, safi, false);
static_zebra_route_add(rn, si_changed, vrf_id, safi, false);
}
int static_add_route(afi_t afi, safi_t safi, uint8_t type, struct prefix *p,
@ -180,14 +182,14 @@ int static_add_route(afi_t afi, safi_t safi, uint8_t type, struct prefix *p,
/* check whether interface exists in system & install if it does */
if (!ifname)
static_install_route(rn, safi);
static_install_route(rn, si, safi);
else {
struct interface *ifp;
ifp = if_lookup_by_name(ifname, nh_svrf->vrf->vrf_id);
if (ifp && ifp->ifindex != IFINDEX_INTERNAL) {
si->ifindex = ifp->ifindex;
static_install_route(rn, safi);
static_install_route(rn, si, safi);
} else
zlog_warn("Static Route using %s interface not installed because the interface does not exist in specified vrf",
ifname);
@ -253,7 +255,7 @@ int static_delete_route(afi_t afi, safi_t safi, uint8_t type, struct prefix *p,
* If we have other si nodes then route replace
* else delete the route
*/
static_uninstall_route(si->vrf_id, safi, rn);
static_uninstall_route(si->vrf_id, safi, rn, si);
route_unlock_node(rn);
/* Free static route configuration. */
@ -296,7 +298,7 @@ static void static_ifindex_update_af(struct interface *ifp, bool up, afi_t afi,
}
}
static_install_route(rn, safi);
static_install_route(rn, si, safi);
}
}
}
@ -340,7 +342,7 @@ static void static_fixup_vrf(struct static_vrf *svrf,
}
if (install)
static_install_route(rn, safi);
static_install_route(rn, si, safi);
}
}
@ -379,7 +381,7 @@ static void static_enable_vrf(struct static_vrf *svrf,
}
if (install)
static_install_route(rn, safi);
static_install_route(rn, si, safi);
}
}
@ -441,7 +443,7 @@ static void static_cleanup_vrf(struct static_vrf *svrf,
if (strcmp(svrf->vrf->name, si->nh_vrfname) != 0)
continue;
static_uninstall_route(si->vrf_id, safi, rn);
static_uninstall_route(si->vrf_id, safi, rn, si);
}
}
}
@ -462,7 +464,7 @@ static void static_disable_vrf(struct route_table *stable,
for (rn = route_top(stable); rn; rn = route_next(rn))
for (si = rn->info; si; si = si->next)
static_uninstall_route(si->vrf_id, safi, rn);
static_uninstall_route(si->vrf_id, safi, rn, si);
}
/*

34
staticd/static_zebra.c
View File

@ -240,8 +240,9 @@ void static_zebra_nht_register(struct static_route *si, bool reg)
si->nh_registered = reg;
}
extern void static_zebra_route_add(struct route_node *rn, vrf_id_t vrf_id,
safi_t safi, bool install)
extern void static_zebra_route_add(struct route_node *rn,
struct static_route *si_changed,
vrf_id_t vrf_id, safi_t safi, bool install)
{
struct static_route *si = rn->info;
const struct prefix *p, *src_pp;
@ -262,29 +263,26 @@ extern void static_zebra_route_add(struct route_node *rn, vrf_id_t vrf_id,
SET_FLAG(api.message, ZAPI_MESSAGE_SRCPFX);
memcpy(&api.src_prefix, src_pp, sizeof(api.src_prefix));
}
SET_FLAG(api.flags, ZEBRA_FLAG_RR_USE_DISTANCE);
SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
if (si_changed->distance) {
SET_FLAG(api.message, ZAPI_MESSAGE_DISTANCE);
api.distance = si_changed->distance;
}
if (si_changed->tag) {
SET_FLAG(api.message, ZAPI_MESSAGE_TAG);
api.tag = si_changed->tag;
}
api.tableid = si_changed->table_id;
zlog_debug("Distance sent down: %d %d", si_changed->distance, install);
for (/*loaded above*/; si; si = si->next) {
api_nh = &api.nexthops[nh_num];
if (si->nh_vrf_id == VRF_UNKNOWN)
continue;
/*
* If we create a ecmp static route the
* last distance and tag entered wins. Why because
* this cli choosen sucks
*/
if (si->distance) {
SET_FLAG(api.message, ZAPI_MESSAGE_DISTANCE);
api.distance = si->distance;
}
if (si->tag) {
SET_FLAG(api.message, ZAPI_MESSAGE_TAG);
api.tag = si->tag;
}
api.tableid = si->table_id;
if (si->distance != si_changed->distance)
continue;
api_nh->vrf_id = si->nh_vrf_id;
switch (si->type) {

5
staticd/static_zebra.h
View File

@ -23,7 +23,8 @@ extern struct thread_master *master;
extern void static_zebra_nht_register(struct static_route *si, bool reg);
extern void static_zebra_route_add(struct route_node *rn, vrf_id_t vrf_id,
safi_t safi, bool install);
extern void static_zebra_route_add(struct route_node *rn,
struct static_route *si_changed,
vrf_id_t vrf_id, safi_t safi, bool install);
extern void static_zebra_init(void);
#endif