[ovs-dev,ovn,2/3] northd: add the possibility to define localnet as qos capable port

Refactor allocate_chassis_queueid and free_chassis_queueid in order
to get an unused queue_id even for localnet ports and add the
the possibility to define localnet as qos capable port

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
---
 northd/ovn-northd.c | 45 ++++++++++++++++++++++++++++++---------------
 1 file changed, 30 insertions(+), 15 deletions(-)

On Mon, Sep 23, 2019 at 5:09 PM Lorenzo Bianconi
<lorenzo.bianconi@redhat.com> wrote:
>
> Refactor allocate_chassis_queueid and free_chassis_queueid in order
> to get an unused queue_id even for localnet ports and add the
> the possibility to define localnet as qos capable port
>
> Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>

Looks good to me.

Acked-by: Dumitru Ceara <dceara@redhat.com>

> ---
>  northd/ovn-northd.c | 45 ++++++++++++++++++++++++++++++---------------
>  1 file changed, 30 insertions(+), 15 deletions(-)
>
> diff --git a/northd/ovn-northd.c b/northd/ovn-northd.c
> index f393cebb8..633fb502b 100644
> --- a/northd/ovn-northd.c
> +++ b/northd/ovn-northd.c
> @@ -357,7 +357,7 @@ destroy_chassis_queues(struct hmap *set)
>  }
>
>  static void
> -add_chassis_queue(struct hmap *set, struct uuid *chassis_uuid,
> +add_chassis_queue(struct hmap *set, const struct uuid *chassis_uuid,
>                    uint32_t queue_id)
>  {
>      struct ovn_chassis_qdisc_queues *node = xmalloc(sizeof *node);
> @@ -368,7 +368,7 @@ add_chassis_queue(struct hmap *set, struct uuid *chassis_uuid,
>  }
>
>  static bool
> -chassis_queueid_in_use(const struct hmap *set, struct uuid *chassis_uuid,
> +chassis_queueid_in_use(const struct hmap *set, const struct uuid *chassis_uuid,
>                         uint32_t queue_id)
>  {
>      const struct ovn_chassis_qdisc_queues *node;
> @@ -383,31 +383,38 @@ chassis_queueid_in_use(const struct hmap *set, struct uuid *chassis_uuid,
>  }
>
>  static uint32_t
> -allocate_chassis_queueid(struct hmap *set, struct sbrec_chassis *chassis)
> +allocate_chassis_queueid(struct hmap *set, const struct uuid *uuid, char *name)
>  {
> +    if (!uuid) {
> +        return 0;
> +    }
> +
>      for (uint32_t queue_id = QDISC_MIN_QUEUE_ID + 1;
>           queue_id <= QDISC_MAX_QUEUE_ID;
>           queue_id++) {
> -        if (!chassis_queueid_in_use(set, &chassis->header_.uuid, queue_id)) {
> -            add_chassis_queue(set, &chassis->header_.uuid, queue_id);
> +        if (!chassis_queueid_in_use(set, uuid, queue_id)) {
> +            add_chassis_queue(set, uuid, queue_id);
>              return queue_id;
>          }
>      }
>
>      static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
> -    VLOG_WARN_RL(&rl, "all %s queue ids exhausted", chassis->name);
> +    VLOG_WARN_RL(&rl, "all %s queue ids exhausted", name);
>      return 0;
>  }
>
>  static void
> -free_chassis_queueid(struct hmap *set, struct sbrec_chassis *chassis,
> +free_chassis_queueid(struct hmap *set, const struct uuid *uuid,
>                       uint32_t queue_id)
>  {
> -    const struct uuid *chassis_uuid = &chassis->header_.uuid;
> +    if (!uuid) {
> +        return;
> +    }
> +
>      struct ovn_chassis_qdisc_queues *node;
>      HMAP_FOR_EACH_WITH_HASH (node, key_node,
> -                             hash_chassis_queue(chassis_uuid, queue_id), set) {
> -        if (uuid_equals(chassis_uuid, &node->chassis_uuid)
> +                             hash_chassis_queue(uuid, queue_id), set) {
> +        if (uuid_equals(uuid, &node->chassis_uuid)
>              && node->queue_id == queue_id) {
>              hmap_remove(set, &node->key_node);
>              free(node);
> @@ -2650,15 +2657,23 @@ ovn_port_update_sbrec(struct northd_context *ctx,
>              uint32_t queue_id = smap_get_int(
>                      &op->sb->options, "qdisc_queue_id", 0);
>              bool has_qos = port_has_qos_params(&op->nbsp->options);
> +            const struct uuid *uuid = NULL;
>              struct smap options;
> +            char *name = "";
> +
> +            if (!strcmp(op->nbsp->type, "localnet")) {
> +                uuid = &op->sb->header_.uuid;
> +                name = "localnet";
> +            } else if (op->sb->chassis) {
> +                uuid = &op->sb->chassis->header_.uuid;
> +                name = op->sb->chassis->name;
> +            }
>
> -            if (op->sb->chassis && has_qos && !queue_id) {
> +            if (has_qos && !queue_id) {
>                  queue_id = allocate_chassis_queueid(chassis_qdisc_queues,
> -                                                    op->sb->chassis);
> +                                                    uuid, name);
>              } else if (!has_qos && queue_id) {
> -                free_chassis_queueid(chassis_qdisc_queues,
> -                                     op->sb->chassis,
> -                                     queue_id);
> +                free_chassis_queueid(chassis_qdisc_queues, uuid, queue_id);
>                  queue_id = 0;
>              }
>
> --
> 2.21.0
>