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From: Jie Hai <haijie1@huawei.com>
To: <dev@dpdk.org>, Thomas Monjalon <thomas@monjalon.net>, Ferruh Yigit
<ferruh.yigit@amd.com>, Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
CC: <lihuisong@huawei.com>, <fengchengwen@huawei.com>,
<liudongdong3@huawei.com>, <haijie1@huawei.com>
Subject: [PATCH v7 7/9] lib/ethdev: add API to get RSS algorithm names
Date: Sat, 28 Oct 2023 09:46:09 +0800
Message-ID: <20231028014611.4086500-8-haijie1@huawei.com>
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This patch adds new API rte_eth_dev_rss_algo_name() to get
name of a RSS algorithm and document it.
Signed-off-by: Jie Hai <haijie1@huawei.com>
---
doc/guides/rel_notes/release_23_11.rst | 3 +++
lib/ethdev/rte_ethdev.c | 25 +++++++++++++++++++++++++
lib/ethdev/rte_ethdev.h | 4 ++++
3 files changed, 32 insertions(+)
diff --git a/doc/guides/rel_notes/release_23_11.rst b/doc/guides/rel_notes/release_23_11.rst
index a35d729d2cc7..fe561a6c59b9 100644
--- a/doc/guides/rel_notes/release_23_11.rst
+++ b/doc/guides/rel_notes/release_23_11.rst
@@ -243,6 +243,9 @@ New Features
Added dispatcher library which purpose is to help decouple different
parts (modules) of an eventdev-based application.
+* **Added new API for RSS hash algorithm**
+ Added new function ``rte_eth_dev_rss_algo_name`` to get name of RSS hash
+ algorithm.
Removed Items
-------------
diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
index 90bfbf14d1f7..301531ba9628 100644
--- a/lib/ethdev/rte_ethdev.c
+++ b/lib/ethdev/rte_ethdev.c
@@ -160,6 +160,17 @@ enum {
STAT_QMAP_RX
};
+static const struct {
+ enum rte_eth_hash_function algo;
+ const char *name;
+} rte_eth_dev_rss_algo_names[] = {
+ {RTE_ETH_HASH_FUNCTION_DEFAULT, "default"},
+ {RTE_ETH_HASH_FUNCTION_SIMPLE_XOR, "simple_xor"},
+ {RTE_ETH_HASH_FUNCTION_TOEPLITZ, "toeplitz"},
+ {RTE_ETH_HASH_FUNCTION_SYMMETRIC_TOEPLITZ, "symmetric_toeplitz"},
+ {RTE_ETH_HASH_FUNCTION_SYMMETRIC_TOEPLITZ_SORT, "symmetric_toeplitz_sort"},
+};
+
int
rte_eth_iterator_init(struct rte_dev_iterator *iter, const char *devargs_str)
{
@@ -4761,6 +4772,20 @@ rte_eth_dev_rss_hash_conf_get(uint16_t port_id,
return ret;
}
+const char *
+rte_eth_dev_rss_algo_name(enum rte_eth_hash_function rss_algo)
+{
+ const char *name = "Unknown function";
+ unsigned int i;
+
+ for (i = 0; i < RTE_DIM(rte_eth_dev_rss_algo_names); i++) {
+ if (rss_algo == rte_eth_dev_rss_algo_names[i].algo)
+ return rte_eth_dev_rss_algo_names[i].name;
+ }
+
+ return name;
+}
+
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 2f639edd8218..b9d4bfa851b4 100644
--- a/lib/ethdev/rte_ethdev.h
+++ b/lib/ethdev/rte_ethdev.h
@@ -4645,6 +4645,10 @@ int
rte_eth_dev_rss_hash_conf_get(uint16_t port_id,
struct rte_eth_rss_conf *rss_conf);
+
+const char *
+rte_eth_dev_rss_algo_name(enum rte_eth_hash_function rss_algo);
+
/**
* Add UDP tunneling port for a type of tunnel.
*
--
2.30.0