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zebra: Properly note add/update for rib_add_multipath_nhe

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When calling rib_add_multipath_nhe ensure that we have
well aligned return codes that mean something so that
interersted parties can properly handle the situation.

Signed-off-by: Donald Sharp <sharpd@nvidia.com>
This commit is contained in:
Donald Sharp 2021-08-09 08:01:06 -04:00
parent f94a7703c0
commit 38c764dde4
3 changed files with 19 additions and 7 deletions
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5
zebra/rib.h
View File

@ -403,6 +403,11 @@ extern int rib_add(afi_t afi, safi_t safi, vrf_id_t vrf_id, int type,
extern int rib_add_multipath(afi_t afi, safi_t safi, struct prefix *p,
struct prefix_ipv6 *src_p, struct route_entry *re,
struct nexthop_group *ng);
/*
* -1 -> some sort of error
* 0 -> an add
* 1 -> an update
*/
extern int rib_add_multipath_nhe(afi_t afi, safi_t safi, struct prefix *p,
struct prefix_ipv6 *src_p,
struct route_entry *re,

12
zebra/zapi_msg.c
View File

@ -2114,8 +2114,10 @@ static void zread_route_add(ZAPI_HANDLER_ARGS)
* rib_add_multipath_nhe only fails in a couple spots
* and in those spots we have not freed memory
*/
if (ret == -1)
if (ret == -1) {
client->error_cnt++;
XFREE(MTYPE_RE, re);
}
/* At this point, these allocations are not needed: 're' has been
* retained or freed, and if 're' still exists, it is using
@ -2128,15 +2130,15 @@ static void zread_route_add(ZAPI_HANDLER_ARGS)
/* Stats */
switch (api.prefix.family) {
case AF_INET:
if (ret > 0)
if (ret == 0)
client->v4_route_add_cnt++;
else if (ret < 0)
else if (ret == 1)
client->v4_route_upd8_cnt++;
break;
case AF_INET6:
if (ret > 0)
if (ret == 0)
client->v6_route_add_cnt++;
else if (ret < 0)
else if (ret == 1)
client->v6_route_upd8_cnt++;
break;
}

9
zebra/zebra_rib.c
View File

@ -3453,6 +3453,10 @@ void rib_lookup_and_pushup(struct prefix_ipv4 *p, vrf_id_t vrf_id)
* allocate: if they allocate a nexthop_group or backup nexthop info, they
* must free those objects. If this returns < 0, an error has occurred and the
* route_entry 're' has not been captured; the caller should free that also.
*
* -1 -> error
* 0 -> Add
* 1 -> update
*/
int rib_add_multipath_nhe(afi_t afi, safi_t safi, struct prefix *p,
struct prefix_ipv6 *src_p, struct route_entry *re,
@ -3567,11 +3571,12 @@ int rib_add_multipath_nhe(afi_t afi, safi_t safi, struct prefix *p,
SET_FLAG(re->status, ROUTE_ENTRY_CHANGED);
rib_addnode(rn, re, 1);
ret = 1;
/* Free implicit route.*/
if (same)
if (same) {
ret = 1;
rib_delnode(rn, same);
}
/* See if we can remove some RE entries that are queued for
* removal, but won't be considered in rib processing.