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| author | Ahmed Zaki <ahmed.zaki@intel.com> | 2023-12-12 17:33:21 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-12-13 22:07:17 -0800 |
| commit | 4a3de3fb0eb6897488dd510006abd9673f1fb34c (patch) | |
| tree | 251e28d838a8e2f53931ecfa3a3384b50c53e308 /drivers/net/ethernet/intel/iavf/iavf_adv_rss.c | |
| parent | 352e9bf238133882dfaebc0dc59a590732a92006 (diff) | |
| download | linux-4a3de3fb0eb6897488dd510006abd9673f1fb34c.tar.gz linux-4a3de3fb0eb6897488dd510006abd9673f1fb34c.tar.bz2 linux-4a3de3fb0eb6897488dd510006abd9673f1fb34c.zip | |
iavf: enable symmetric-xor RSS for Toeplitz hash function
Allow the user to set the symmetric Toeplitz hash function via:
# ethtool -X eth0 hfunc toeplitz symmetric-xor
The driver will reject any new RSS configuration if a field other than
(IP src/dst and L4 src/dst ports) is requested for hashing.
The symmetric RSS will not be supported on PFs not advertising the ADV RSS
Offload flag (ADV_RSS_SUPPORT()), for example the E700 series (i40e).
Reviewed-by: Madhu Chittim <madhu.chittim@intel.com>
Signed-off-by: Ahmed Zaki <ahmed.zaki@intel.com>
Link: https://lore.kernel.org/r/20231213003321.605376-9-ahmed.zaki@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/intel/iavf/iavf_adv_rss.c')
| -rw-r--r-- | drivers/net/ethernet/intel/iavf/iavf_adv_rss.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/net/ethernet/intel/iavf/iavf_adv_rss.c b/drivers/net/ethernet/intel/iavf/iavf_adv_rss.c index 6edbf134b73f..a9e1da35e248 100644 --- a/drivers/net/ethernet/intel/iavf/iavf_adv_rss.c +++ b/drivers/net/ethernet/intel/iavf/iavf_adv_rss.c @@ -95,17 +95,21 @@ iavf_fill_adv_rss_sctp_hdr(struct virtchnl_proto_hdr *hdr, u64 hash_flds) * @rss_cfg: the virtchnl message to be filled with RSS configuration setting * @packet_hdrs: the RSS configuration protocol header types * @hash_flds: the RSS configuration protocol hash fields + * @symm: if true, symmetric hash is required * * Returns 0 if the RSS configuration virtchnl message is filled successfully */ int iavf_fill_adv_rss_cfg_msg(struct virtchnl_rss_cfg *rss_cfg, - u32 packet_hdrs, u64 hash_flds) + u32 packet_hdrs, u64 hash_flds, bool symm) { struct virtchnl_proto_hdrs *proto_hdrs = &rss_cfg->proto_hdrs; struct virtchnl_proto_hdr *hdr; - rss_cfg->rss_algorithm = VIRTCHNL_RSS_ALG_TOEPLITZ_ASYMMETRIC; + if (symm) + rss_cfg->rss_algorithm = VIRTCHNL_RSS_ALG_TOEPLITZ_SYMMETRIC; + else + rss_cfg->rss_algorithm = VIRTCHNL_RSS_ALG_TOEPLITZ_ASYMMETRIC; proto_hdrs->tunnel_level = 0; /* always outer layer */ |