[RESEND,1/2] ethdev: add new API to get RSS hash algorithm by name
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Commit Message
This patch supports conversion from names to hash algorithm
(see RTE_ETH_HASH_FUNCTION_XXX).
Signed-off-by: Jie Hai <haijie1@huawei.com>
Reviewed-by: Huisong Li <lihuisong@huawei.com>
---
doc/guides/rel_notes/release_24_03.rst | 5 +++++
lib/ethdev/rte_ethdev.c | 15 +++++++++++++++
lib/ethdev/rte_ethdev.h | 20 ++++++++++++++++++++
lib/ethdev/version.map | 3 +++
4 files changed, 43 insertions(+)
Comments
On 11/30/2023 10:44 AM, Jie Hai wrote:
> This patch supports conversion from names to hash algorithm
> (see RTE_ETH_HASH_FUNCTION_XXX).
>
> Signed-off-by: Jie Hai <haijie1@huawei.com>
> Reviewed-by: Huisong Li <lihuisong@huawei.com>
>
Reviewed-by: Ferruh Yigit <ferruh.yigit@amd.com>
@@ -55,6 +55,11 @@ New Features
Also, make sure to start the actual text at the margin.
=======================================================
+* **Improved support of RSS hash algorithm.**
+
+ * Added new function ``rte_eth_find_rss_algo`` to get RSS hash
+ algorithm by its name.
+
Removed Items
-------------
@@ -4826,6 +4826,21 @@ rte_eth_dev_rss_algo_name(enum rte_eth_hash_function rss_algo)
return name;
}
+int
+rte_eth_find_rss_algo(const char *name, uint32_t *algo)
+{
+ unsigned int i;
+
+ for (i = 0; i < RTE_DIM(rte_eth_dev_rss_algo_names); i++) {
+ if (strcmp(name, rte_eth_dev_rss_algo_names[i].name) == 0) {
+ *algo = rte_eth_dev_rss_algo_names[i].algo;
+ return 0;
+ }
+ }
+
+ return -EINVAL;
+}
+
int
rte_eth_dev_udp_tunnel_port_add(uint16_t port_id,
struct rte_eth_udp_tunnel *udp_tunnel)
@@ -4667,6 +4667,26 @@ __rte_experimental
const char *
rte_eth_dev_rss_algo_name(enum rte_eth_hash_function rss_algo);
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change, or be removed, without prior notice.
+ *
+ * Get RSS hash algorithm by its name.
+ *
+ * @param name
+ * RSS hash algorithm.
+ *
+ * @param algo
+ * return the RSS hash algorithm found, @see rte_eth_hash_function.
+ *
+ * @return
+ * - (0) if successful.
+ * - (-EINVAL) if not found.
+ */
+__rte_experimental
+int
+rte_eth_find_rss_algo(const char *name, uint32_t *algo);
+
/**
* Add UDP tunneling port for a type of tunnel.
*
@@ -316,6 +316,9 @@ EXPERIMENTAL {
rte_eth_recycle_rx_queue_info_get;
rte_flow_group_set_miss_actions;
rte_flow_calc_table_hash;
+
+ # added in 24.03
+ rte_eth_find_rss_algo;
};
INTERNAL {