From: Paul Blakey <pa...@mellanox.com>
Flower classifer requires a different priority per mask,
so we hash the mask and generate a new priority for
each new mask used.
Signed-off-by: Paul Blakey <pa...@mellanox.com>
Reviewed-by: Roi Dayan <r...@mellanox.com>
---
lib/netdev-tc-offloads.c | 38 ++++++++++++++++++++++++++++++++++++++
1 file changed, 38 insertions(+)
diff --git a/lib/netdev-tc-offloads.c b/lib/netdev-tc-offloads.c
index 1091b4e..4d1bea6 100644
--- a/lib/netdev-tc-offloads.c
+++ b/lib/netdev-tc-offloads.c
@@ -221,6 +221,44 @@ find_ufid(int prio, int handle, struct netdev *netdev,
ovs_u128 *ufid)
return (data != NULL);
}
+struct prio_map_data {
+ struct hmap_node node;
+ struct tc_flower_key mask;
+ ovs_be16 protocol;
+ uint16_t prio;
+};
+
+static uint16_t
+get_prio_for_tc_flower(struct tc_flower *flower)
+{
+ static struct hmap prios = HMAP_INITIALIZER(&prios);
+ static struct ovs_mutex prios_lock = OVS_MUTEX_INITIALIZER;
+ static int last_prio = 0;
+ size_t key_len = sizeof(struct tc_flower_key);
+ size_t hash = hash_bytes(&flower->mask, key_len,
+ (OVS_FORCE uint32_t) flower->key.eth_type);
+ struct prio_map_data *data;
+ struct prio_map_data *new_data;
+
+ ovs_mutex_lock(&prios_lock);
+ HMAP_FOR_EACH_WITH_HASH(data, node, hash, &prios) {
+ if (!memcmp(&flower->mask, &data->mask, key_len)
+ && data->protocol == flower->key.eth_type) {
+ ovs_mutex_unlock(&prios_lock);
+ return data->prio;
+ }
+ }
+
+ new_data = xzalloc(sizeof *new_data);
+ memcpy(&new_data->mask, &flower->mask, key_len);
+ new_data->prio = ++last_prio;
+ new_data->protocol = flower->key.eth_type;
+ hmap_insert(&prios, &new_data->node, hash);
+ ovs_mutex_unlock(&prios_lock);
+
+ return new_data->prio;
+}
+
int
netdev_tc_flow_flush(struct netdev *netdev)
{
--
2.7.4
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