Add support of setting hash lookup table size according
to the hardawre capability.
Signed-off-by: Helin Zhang <helin.zhang at intel.com>
---
lib/librte_ether/rte_ethdev.h | 9 ++++++++-
lib/librte_pmd_i40e/i40e_ethdev.c | 14 +++++++++++++-
lib/librte_pmd_i40e/i40e_ethdev.h | 1 +
3 files changed, 22 insertions(+), 2 deletions(-)
v5 changes:
* Reworked the annotations of macros of RETA sizes.
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index c29525b..2c8f129 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -443,9 +443,16 @@ struct rte_eth_rss_conf {
ETH_RSS_FRAG_IPV6 | \
ETH_RSS_L2_PAYLOAD)
-/* Definitions used for redirection table entry size */
+/*
+ * Definitions used for redirection table entry size.
+ * Some RSS RETA sizes may not be supported by some drivers, check the
+ * documentation or the description of relevant functions for more details.
+ */
#define ETH_RSS_RETA_NUM_ENTRIES 128
#define ETH_RSS_RETA_MAX_QUEUE 16
+#define ETH_RSS_RETA_SIZE_64 64
+#define ETH_RSS_RETA_SIZE_128 128
+#define ETH_RSS_RETA_SIZE_512 512
/* Definitions used for VMDQ and DCB functionality */
#define ETH_VMDQ_MAX_VLAN_FILTERS 64 /**< Maximum nb. of VMDQ vlan filters.
*/
diff --git a/lib/librte_pmd_i40e/i40e_ethdev.c
b/lib/librte_pmd_i40e/i40e_ethdev.c
index 5074262..d90718e 100644
--- a/lib/librte_pmd_i40e/i40e_ethdev.c
+++ b/lib/librte_pmd_i40e/i40e_ethdev.c
@@ -3195,7 +3195,19 @@ i40e_pf_setup(struct i40e_pf *pf)
/* Configure filter control */
memset(&settings, 0, sizeof(settings));
- settings.hash_lut_size = I40E_HASH_LUT_SIZE_128;
+ if (hw->func_caps.rss_table_size == ETH_RSS_RETA_SIZE_128)
+ settings.hash_lut_size = I40E_HASH_LUT_SIZE_128;
+ else if (hw->func_caps.rss_table_size == ETH_RSS_RETA_SIZE_512)
+ settings.hash_lut_size = I40E_HASH_LUT_SIZE_512;
+ else {
+ PMD_DRV_LOG(ERR, "Hash lookup table size (%u) not supported\n",
+ hw->func_caps.rss_table_size);
+ return I40E_ERR_PARAM;
+ }
+ PMD_DRV_LOG(INFO, "Hardware capability of hash lookup table "
+ "size: %u\n", hw->func_caps.rss_table_size);
+ pf->hash_lut_size = hw->func_caps.rss_table_size;
+
/* Enable ethtype and macvlan filters */
settings.enable_ethtype = TRUE;
settings.enable_macvlan = TRUE;
diff --git a/lib/librte_pmd_i40e/i40e_ethdev.h
b/lib/librte_pmd_i40e/i40e_ethdev.h
index 96361c2..c7ad384 100644
--- a/lib/librte_pmd_i40e/i40e_ethdev.h
+++ b/lib/librte_pmd_i40e/i40e_ethdev.h
@@ -270,6 +270,7 @@ struct i40e_pf {
uint16_t vmdq_nb_qps; /* The number of queue pairs of VMDq */
uint16_t vf_nb_qps; /* The number of queue pairs of VF */
uint16_t fdir_nb_qps; /* The number of queue pairs of Flow Director */
+ uint16_t hash_lut_size; /* The size of hash lookup table */
/* store VXLAN UDP ports */
uint16_t vxlan_ports[I40E_MAX_PF_UDP_OFFLOAD_PORTS];
--
1.8.1.4
