diff options
| author | Francois Dumontet <francois.dumontet@6wind.com> | 2025-01-07 16:54:48 +0100 |
|---|---|---|
| committer | Francois Dumontet <francois.dumontet@6wind.com> | 2025-02-27 16:51:05 +0100 |
| commit | 8c9b007a0c7efb2e9afc2eac936ba9dd971c6707 (patch) | |
| tree | 11d5048ac0976ece719f0df1a7e0c2a995f6e26c /lib | |
| parent | 77b52da131293041c5074a3f9944a1709872e2f4 (diff) | |
zebra: reduce memory usage by streams when redistributing routes
required stream size is evaluated as a fix part and variable one.
the variable one depend on the number of nexthops.
Signed-off-by: Francois Dumontet <francois.dumontet@6wind.com>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/zclient.c | 18 | ||||
| -rw-r--r-- | lib/zclient.h | 1 |
2 files changed, 19 insertions, 0 deletions
diff --git a/lib/zclient.c b/lib/zclient.c index 5deea8f0cf..86bef38877 100644 --- a/lib/zclient.c +++ b/lib/zclient.c @@ -1326,6 +1326,24 @@ enum zclient_send_status zclient_nhg_send(struct zclient *zclient, int cmd, return zclient_send_message(zclient); } +/* size needed by a stream for redistributing a route */ +int zapi_redistribute_stream_size(struct zapi_route *api) +{ + size_t msg_size = 0; + size_t nh_size = sizeof(struct zapi_nexthop); + + msg_size = sizeof(struct zapi_route); + /* remove unused nexthop structures */ + msg_size -= (MULTIPATH_NUM - api->nexthop_num) * nh_size; + /* remove unused backup nexthop structures */ + msg_size -= (MULTIPATH_NUM - api->backup_nexthop_num) * nh_size; + /* remove unused opaque values */ + msg_size -= ZAPI_MESSAGE_OPAQUE_LENGTH - api->opaque.length; + + return msg_size; +} + + int zapi_route_encode(uint8_t cmd, struct stream *s, struct zapi_route *api) { struct zapi_nexthop *api_nh; diff --git a/lib/zclient.h b/lib/zclient.h index afd84acce2..43521d6e2e 100644 --- a/lib/zclient.h +++ b/lib/zclient.h @@ -1158,6 +1158,7 @@ zclient_send_rnh(struct zclient *zclient, int command, const struct prefix *p, vrf_id_t vrf_id); int zapi_nexthop_encode(struct stream *s, const struct zapi_nexthop *api_nh, uint32_t api_flags, uint32_t api_message); +extern int zapi_redistribute_stream_size(struct zapi_route *api); extern int zapi_route_encode(uint8_t, struct stream *, struct zapi_route *); extern int zapi_route_decode(struct stream *s, struct zapi_route *api); extern int zapi_nexthop_decode(struct stream *s, struct zapi_nexthop *api_nh, |