From 8f2d27fad53653546a97da1f691575ed153bd12f Mon Sep 17 00:00:00 2001 From: Jie Hai Date: Fri, 1 Dec 2023 16:52:53 +0800 Subject: [PATCH 409/410] ethdev: add new API to get RSS hash algorithm by name [ upstream commit c4b01b7cc50e1eb991310549455cc53bac6d47ad ] This patch supports conversion from names to hash algorithm (see RTE_ETH_HASH_FUNCTION_XXX). Signed-off-by: Jie Hai Reviewed-by: Huisong Li Reviewed-by: Ferruh Yigit --- lib/ethdev/rte_ethdev.c | 15 +++++++++++++++ lib/ethdev/rte_ethdev.h | 20 ++++++++++++++++++++ lib/ethdev/version.map | 3 +++ 3 files changed, 38 insertions(+) diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c index 310b39775d..10312b3e13 100644 --- a/lib/ethdev/rte_ethdev.c +++ b/lib/ethdev/rte_ethdev.c @@ -4321,6 +4321,21 @@ 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) diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h index 2880a55890..e0c132cebc 100644 --- a/lib/ethdev/rte_ethdev.h +++ b/lib/ethdev/rte_ethdev.h @@ -4420,6 +4420,26 @@ __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. * diff --git a/lib/ethdev/version.map b/lib/ethdev/version.map index 1867016054..44cbe04e9b 100644 --- a/lib/ethdev/version.map +++ b/lib/ethdev/version.map @@ -268,6 +268,9 @@ EXPERIMENTAL { # added in 23.11 rte_eth_dev_rss_algo_name; + + # added in 24.03 + rte_eth_find_rss_algo; }; INTERNAL { -- 2.33.0