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ice: Implement ethtool get/set rx-flow-hash
Provide support to change or retrieve RSS hash options for a flow type. The supported flow-types are: tcp4, tcp6, udp4, udp6, sctp4, sctp6. Signed-off-by: Md Fahad Iqbal Polash <md.fahad.iqbal.polash@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Md Fahad Iqbal Polash
Jeff Kirsher
parent
1c01c8c6c9
commit
6876fb6404
@ -4,6 +4,7 @@
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/* ethtool support for ice */
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#include "ice.h"
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#include "ice_flow.h"
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#include "ice_lib.h"
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#include "ice_dcb_lib.h"
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@ -2533,6 +2534,243 @@ done:
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return err;
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}
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/**
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* ice_parse_hdrs - parses headers from RSS hash input
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* @nfc: ethtool rxnfc command
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*
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* This function parses the rxnfc command and returns intended
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* header types for RSS configuration
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*/
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static u32 ice_parse_hdrs(struct ethtool_rxnfc *nfc)
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{
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u32 hdrs = ICE_FLOW_SEG_HDR_NONE;
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switch (nfc->flow_type) {
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case TCP_V4_FLOW:
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hdrs |= ICE_FLOW_SEG_HDR_TCP | ICE_FLOW_SEG_HDR_IPV4;
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break;
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case UDP_V4_FLOW:
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hdrs |= ICE_FLOW_SEG_HDR_UDP | ICE_FLOW_SEG_HDR_IPV4;
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break;
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case SCTP_V4_FLOW:
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hdrs |= ICE_FLOW_SEG_HDR_SCTP | ICE_FLOW_SEG_HDR_IPV4;
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break;
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case TCP_V6_FLOW:
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hdrs |= ICE_FLOW_SEG_HDR_TCP | ICE_FLOW_SEG_HDR_IPV6;
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break;
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case UDP_V6_FLOW:
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hdrs |= ICE_FLOW_SEG_HDR_UDP | ICE_FLOW_SEG_HDR_IPV6;
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break;
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case SCTP_V6_FLOW:
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hdrs |= ICE_FLOW_SEG_HDR_SCTP | ICE_FLOW_SEG_HDR_IPV6;
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break;
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default:
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break;
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}
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return hdrs;
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}
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#define ICE_FLOW_HASH_FLD_IPV4_SA BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_SA)
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#define ICE_FLOW_HASH_FLD_IPV6_SA BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_SA)
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#define ICE_FLOW_HASH_FLD_IPV4_DA BIT_ULL(ICE_FLOW_FIELD_IDX_IPV4_DA)
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#define ICE_FLOW_HASH_FLD_IPV6_DA BIT_ULL(ICE_FLOW_FIELD_IDX_IPV6_DA)
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#define ICE_FLOW_HASH_FLD_TCP_SRC_PORT BIT_ULL(ICE_FLOW_FIELD_IDX_TCP_SRC_PORT)
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#define ICE_FLOW_HASH_FLD_TCP_DST_PORT BIT_ULL(ICE_FLOW_FIELD_IDX_TCP_DST_PORT)
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#define ICE_FLOW_HASH_FLD_UDP_SRC_PORT BIT_ULL(ICE_FLOW_FIELD_IDX_UDP_SRC_PORT)
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#define ICE_FLOW_HASH_FLD_UDP_DST_PORT BIT_ULL(ICE_FLOW_FIELD_IDX_UDP_DST_PORT)
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#define ICE_FLOW_HASH_FLD_SCTP_SRC_PORT \
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BIT_ULL(ICE_FLOW_FIELD_IDX_SCTP_SRC_PORT)
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#define ICE_FLOW_HASH_FLD_SCTP_DST_PORT \
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BIT_ULL(ICE_FLOW_FIELD_IDX_SCTP_DST_PORT)
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/**
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* ice_parse_hash_flds - parses hash fields from RSS hash input
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* @nfc: ethtool rxnfc command
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*
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* This function parses the rxnfc command and returns intended
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* hash fields for RSS configuration
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*/
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static u64 ice_parse_hash_flds(struct ethtool_rxnfc *nfc)
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{
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u64 hfld = ICE_HASH_INVALID;
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if (nfc->data & RXH_IP_SRC || nfc->data & RXH_IP_DST) {
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switch (nfc->flow_type) {
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case TCP_V4_FLOW:
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case UDP_V4_FLOW:
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case SCTP_V4_FLOW:
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if (nfc->data & RXH_IP_SRC)
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hfld |= ICE_FLOW_HASH_FLD_IPV4_SA;
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if (nfc->data & RXH_IP_DST)
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hfld |= ICE_FLOW_HASH_FLD_IPV4_DA;
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break;
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case TCP_V6_FLOW:
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case UDP_V6_FLOW:
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case SCTP_V6_FLOW:
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if (nfc->data & RXH_IP_SRC)
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hfld |= ICE_FLOW_HASH_FLD_IPV6_SA;
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if (nfc->data & RXH_IP_DST)
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hfld |= ICE_FLOW_HASH_FLD_IPV6_DA;
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break;
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default:
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break;
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}
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}
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if (nfc->data & RXH_L4_B_0_1 || nfc->data & RXH_L4_B_2_3) {
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switch (nfc->flow_type) {
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case TCP_V4_FLOW:
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case TCP_V6_FLOW:
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if (nfc->data & RXH_L4_B_0_1)
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hfld |= ICE_FLOW_HASH_FLD_TCP_SRC_PORT;
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if (nfc->data & RXH_L4_B_2_3)
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hfld |= ICE_FLOW_HASH_FLD_TCP_DST_PORT;
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break;
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case UDP_V4_FLOW:
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case UDP_V6_FLOW:
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if (nfc->data & RXH_L4_B_0_1)
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hfld |= ICE_FLOW_HASH_FLD_UDP_SRC_PORT;
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if (nfc->data & RXH_L4_B_2_3)
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hfld |= ICE_FLOW_HASH_FLD_UDP_DST_PORT;
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break;
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case SCTP_V4_FLOW:
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case SCTP_V6_FLOW:
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if (nfc->data & RXH_L4_B_0_1)
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hfld |= ICE_FLOW_HASH_FLD_SCTP_SRC_PORT;
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if (nfc->data & RXH_L4_B_2_3)
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hfld |= ICE_FLOW_HASH_FLD_SCTP_DST_PORT;
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break;
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default:
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break;
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}
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}
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return hfld;
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}
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/**
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* ice_set_rss_hash_opt - Enable/Disable flow types for RSS hash
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* @vsi: the VSI being configured
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* @nfc: ethtool rxnfc command
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*
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* Returns Success if the flow input set is supported.
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*/
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static int
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ice_set_rss_hash_opt(struct ice_vsi *vsi, struct ethtool_rxnfc *nfc)
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{
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struct ice_pf *pf = vsi->back;
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enum ice_status status;
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struct device *dev;
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u64 hashed_flds;
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u32 hdrs;
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dev = ice_pf_to_dev(pf);
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if (ice_is_safe_mode(pf)) {
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dev_dbg(dev, "Advanced RSS disabled. Package download failed, vsi num = %d\n",
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vsi->vsi_num);
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return -EINVAL;
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}
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hashed_flds = ice_parse_hash_flds(nfc);
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if (hashed_flds == ICE_HASH_INVALID) {
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dev_dbg(dev, "Invalid hash fields, vsi num = %d\n",
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vsi->vsi_num);
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return -EINVAL;
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}
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hdrs = ice_parse_hdrs(nfc);
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if (hdrs == ICE_FLOW_SEG_HDR_NONE) {
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dev_dbg(dev, "Header type is not valid, vsi num = %d\n",
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vsi->vsi_num);
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return -EINVAL;
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}
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status = ice_add_rss_cfg(&pf->hw, vsi->idx, hashed_flds, hdrs);
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if (status) {
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dev_dbg(dev, "ice_add_rss_cfg failed, vsi num = %d, error = %d\n",
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vsi->vsi_num, status);
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return -EINVAL;
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}
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return 0;
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}
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/**
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* ice_get_rss_hash_opt - Retrieve hash fields for a given flow-type
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* @vsi: the VSI being configured
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* @nfc: ethtool rxnfc command
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*/
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static void
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ice_get_rss_hash_opt(struct ice_vsi *vsi, struct ethtool_rxnfc *nfc)
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{
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struct ice_pf *pf = vsi->back;
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struct device *dev;
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u64 hash_flds;
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u32 hdrs;
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dev = ice_pf_to_dev(pf);
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nfc->data = 0;
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if (ice_is_safe_mode(pf)) {
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dev_dbg(dev, "Advanced RSS disabled. Package download failed, vsi num = %d\n",
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vsi->vsi_num);
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return;
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}
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hdrs = ice_parse_hdrs(nfc);
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if (hdrs == ICE_FLOW_SEG_HDR_NONE) {
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dev_dbg(dev, "Header type is not valid, vsi num = %d\n",
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vsi->vsi_num);
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return;
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}
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hash_flds = ice_get_rss_cfg(&pf->hw, vsi->idx, hdrs);
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if (hash_flds == ICE_HASH_INVALID) {
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dev_dbg(dev, "No hash fields found for the given header type, vsi num = %d\n",
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vsi->vsi_num);
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return;
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}
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if (hash_flds & ICE_FLOW_HASH_FLD_IPV4_SA ||
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hash_flds & ICE_FLOW_HASH_FLD_IPV6_SA)
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nfc->data |= (u64)RXH_IP_SRC;
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if (hash_flds & ICE_FLOW_HASH_FLD_IPV4_DA ||
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hash_flds & ICE_FLOW_HASH_FLD_IPV6_DA)
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nfc->data |= (u64)RXH_IP_DST;
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if (hash_flds & ICE_FLOW_HASH_FLD_TCP_SRC_PORT ||
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hash_flds & ICE_FLOW_HASH_FLD_UDP_SRC_PORT ||
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hash_flds & ICE_FLOW_HASH_FLD_SCTP_SRC_PORT)
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nfc->data |= (u64)RXH_L4_B_0_1;
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if (hash_flds & ICE_FLOW_HASH_FLD_TCP_DST_PORT ||
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hash_flds & ICE_FLOW_HASH_FLD_UDP_DST_PORT ||
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hash_flds & ICE_FLOW_HASH_FLD_SCTP_DST_PORT)
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nfc->data |= (u64)RXH_L4_B_2_3;
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}
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/**
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* ice_set_rxnfc - command to set Rx flow rules.
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* @netdev: network interface device structure
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* @cmd: ethtool rxnfc command
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*
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* Returns 0 for success and negative values for errors
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*/
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static int ice_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
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{
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struct ice_netdev_priv *np = netdev_priv(netdev);
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struct ice_vsi *vsi = np->vsi;
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switch (cmd->cmd) {
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case ETHTOOL_SRXFH:
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return ice_set_rss_hash_opt(vsi, cmd);
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default:
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break;
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}
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return -EOPNOTSUPP;
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}
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/**
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* ice_get_rxnfc - command to get Rx flow classification rules
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* @netdev: network interface device structure
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@ -2554,6 +2792,10 @@ ice_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
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cmd->data = vsi->rss_size;
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ret = 0;
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break;
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case ETHTOOL_GRXFH:
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ice_get_rss_hash_opt(vsi, cmd);
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ret = 0;
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break;
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default:
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break;
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}
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@ -3857,6 +4099,7 @@ static const struct ethtool_ops ice_ethtool_ops = {
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.set_priv_flags = ice_set_priv_flags,
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.get_sset_count = ice_get_sset_count,
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.get_rxnfc = ice_get_rxnfc,
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.set_rxnfc = ice_set_rxnfc,
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.get_ringparam = ice_get_ringparam,
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.set_ringparam = ice_set_ringparam,
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.nway_reset = ice_nway_reset,
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@ -1244,3 +1244,32 @@ enum ice_status ice_replay_rss_cfg(struct ice_hw *hw, u16 vsi_handle)
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return status;
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}
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/**
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* ice_get_rss_cfg - returns hashed fields for the given header types
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* @hw: pointer to the hardware structure
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* @vsi_handle: software VSI handle
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* @hdrs: protocol header type
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*
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* This function will return the match fields of the first instance of flow
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* profile having the given header types and containing input VSI
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*/
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u64 ice_get_rss_cfg(struct ice_hw *hw, u16 vsi_handle, u32 hdrs)
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{
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struct ice_rss_cfg *r, *rss_cfg = NULL;
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/* verify if the protocol header is non zero and VSI is valid */
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if (hdrs == ICE_FLOW_SEG_HDR_NONE || !ice_is_vsi_valid(hw, vsi_handle))
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return ICE_HASH_INVALID;
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mutex_lock(&hw->rss_locks);
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list_for_each_entry(r, &hw->rss_list_head, l_entry)
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if (test_bit(vsi_handle, r->vsis) &&
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r->packet_hdr == hdrs) {
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rss_cfg = r;
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break;
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}
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mutex_unlock(&hw->rss_locks);
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return rss_cfg ? rss_cfg->hashed_flds : ICE_HASH_INVALID;
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}
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@ -203,4 +203,5 @@ enum ice_status ice_rem_vsi_rss_cfg(struct ice_hw *hw, u16 vsi_handle);
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enum ice_status
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ice_add_rss_cfg(struct ice_hw *hw, u16 vsi_handle, u64 hashed_flds,
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u32 addl_hdrs);
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u64 ice_get_rss_cfg(struct ice_hw *hw, u16 vsi_handle, u32 hdrs);
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#endif /* _ICE_FLOW_H_ */
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