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Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_dcb.c')
-rw-r--r--drivers/net/ethernet/intel/i40e/i40e_dcb.c469
1 files changed, 469 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_dcb.c b/drivers/net/ethernet/intel/i40e/i40e_dcb.c
new file mode 100644
index 000000000000..50730141bb7b
--- /dev/null
+++ b/drivers/net/ethernet/intel/i40e/i40e_dcb.c
@@ -0,0 +1,469 @@
+/*******************************************************************************
+ *
+ * Intel Ethernet Controller XL710 Family Linux Driver
+ * Copyright(c) 2013 - 2014 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ *
+ * Contact Information:
+ * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ ******************************************************************************/
+
+#include "i40e_adminq.h"
+#include "i40e_prototype.h"
+#include "i40e_dcb.h"
+
+/**
+ * i40e_get_dcbx_status
+ * @hw: pointer to the hw struct
+ * @status: Embedded DCBX Engine Status
+ *
+ * Get the DCBX status from the Firmware
+ **/
+i40e_status i40e_get_dcbx_status(struct i40e_hw *hw, u16 *status)
+{
+ u32 reg;
+
+ if (!status)
+ return I40E_ERR_PARAM;
+
+ reg = rd32(hw, I40E_PRTDCB_GENS);
+ *status = (u16)((reg & I40E_PRTDCB_GENS_DCBX_STATUS_MASK) >>
+ I40E_PRTDCB_GENS_DCBX_STATUS_SHIFT);
+
+ return 0;
+}
+
+/**
+ * i40e_parse_ieee_etscfg_tlv
+ * @tlv: IEEE 802.1Qaz ETS CFG TLV
+ * @dcbcfg: Local store to update ETS CFG data
+ *
+ * Parses IEEE 802.1Qaz ETS CFG TLV
+ **/
+static void i40e_parse_ieee_etscfg_tlv(struct i40e_lldp_org_tlv *tlv,
+ struct i40e_dcbx_config *dcbcfg)
+{
+ struct i40e_ieee_ets_config *etscfg;
+ u8 *buf = tlv->tlvinfo;
+ u16 offset = 0;
+ u8 priority;
+ int i;
+
+ /* First Octet post subtype
+ * --------------------------
+ * |will-|CBS | Re- | Max |
+ * |ing | |served| TCs |
+ * --------------------------
+ * |1bit | 1bit|3 bits|3bits|
+ */
+ etscfg = &dcbcfg->etscfg;
+ etscfg->willing = (u8)((buf[offset] & I40E_IEEE_ETS_WILLING_MASK) >>
+ I40E_IEEE_ETS_WILLING_SHIFT);
+ etscfg->cbs = (u8)((buf[offset] & I40E_IEEE_ETS_CBS_MASK) >>
+ I40E_IEEE_ETS_CBS_SHIFT);
+ etscfg->maxtcs = (u8)((buf[offset] & I40E_IEEE_ETS_MAXTC_MASK) >>
+ I40E_IEEE_ETS_MAXTC_SHIFT);
+
+ /* Move offset to Priority Assignment Table */
+ offset++;
+
+ /* Priority Assignment Table (4 octets)
+ * Octets:| 1 | 2 | 3 | 4 |
+ * -----------------------------------------
+ * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
+ * -----------------------------------------
+ * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
+ * -----------------------------------------
+ */
+ for (i = 0; i < 4; i++) {
+ priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_1_MASK) >>
+ I40E_IEEE_ETS_PRIO_1_SHIFT);
+ etscfg->prioritytable[i * 2] = priority;
+ priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_0_MASK) >>
+ I40E_IEEE_ETS_PRIO_0_SHIFT);
+ etscfg->prioritytable[i * 2 + 1] = priority;
+ offset++;
+ }
+
+ /* TC Bandwidth Table (8 octets)
+ * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
+ * ---------------------------------
+ * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
+ * ---------------------------------
+ */
+ for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
+ etscfg->tcbwtable[i] = buf[offset++];
+
+ /* TSA Assignment Table (8 octets)
+ * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
+ * ---------------------------------
+ * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
+ * ---------------------------------
+ */
+ for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
+ etscfg->tsatable[i] = buf[offset++];
+}
+
+/**
+ * i40e_parse_ieee_etsrec_tlv
+ * @tlv: IEEE 802.1Qaz ETS REC TLV
+ * @dcbcfg: Local store to update ETS REC data
+ *
+ * Parses IEEE 802.1Qaz ETS REC TLV
+ **/
+static void i40e_parse_ieee_etsrec_tlv(struct i40e_lldp_org_tlv *tlv,
+ struct i40e_dcbx_config *dcbcfg)
+{
+ u8 *buf = tlv->tlvinfo;
+ u16 offset = 0;
+ u8 priority;
+ int i;
+
+ /* Move offset to priority table */
+ offset++;
+
+ /* Priority Assignment Table (4 octets)
+ * Octets:| 1 | 2 | 3 | 4 |
+ * -----------------------------------------
+ * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
+ * -----------------------------------------
+ * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
+ * -----------------------------------------
+ */
+ for (i = 0; i < 4; i++) {
+ priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_1_MASK) >>
+ I40E_IEEE_ETS_PRIO_1_SHIFT);
+ dcbcfg->etsrec.prioritytable[i*2] = priority;
+ priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_0_MASK) >>
+ I40E_IEEE_ETS_PRIO_0_SHIFT);
+ dcbcfg->etsrec.prioritytable[i*2 + 1] = priority;
+ offset++;
+ }
+
+ /* TC Bandwidth Table (8 octets)
+ * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
+ * ---------------------------------
+ * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
+ * ---------------------------------
+ */
+ for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
+ dcbcfg->etsrec.tcbwtable[i] = buf[offset++];
+
+ /* TSA Assignment Table (8 octets)
+ * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
+ * ---------------------------------
+ * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
+ * ---------------------------------
+ */
+ for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
+ dcbcfg->etsrec.tsatable[i] = buf[offset++];
+}
+
+/**
+ * i40e_parse_ieee_pfccfg_tlv
+ * @tlv: IEEE 802.1Qaz PFC CFG TLV
+ * @dcbcfg: Local store to update PFC CFG data
+ *
+ * Parses IEEE 802.1Qaz PFC CFG TLV
+ **/
+static void i40e_parse_ieee_pfccfg_tlv(struct i40e_lldp_org_tlv *tlv,
+ struct i40e_dcbx_config *dcbcfg)
+{
+ u8 *buf = tlv->tlvinfo;
+
+ /* ----------------------------------------
+ * |will-|MBC | Re- | PFC | PFC Enable |
+ * |ing | |served| cap | |
+ * -----------------------------------------
+ * |1bit | 1bit|2 bits|4bits| 1 octet |
+ */
+ dcbcfg->pfc.willing = (u8)((buf[0] & I40E_IEEE_PFC_WILLING_MASK) >>
+ I40E_IEEE_PFC_WILLING_SHIFT);
+ dcbcfg->pfc.mbc = (u8)((buf[0] & I40E_IEEE_PFC_MBC_MASK) >>
+ I40E_IEEE_PFC_MBC_SHIFT);
+ dcbcfg->pfc.pfccap = (u8)((buf[0] & I40E_IEEE_PFC_CAP_MASK) >>
+ I40E_IEEE_PFC_CAP_SHIFT);
+ dcbcfg->pfc.pfcenable = buf[1];
+}
+
+/**
+ * i40e_parse_ieee_app_tlv
+ * @tlv: IEEE 802.1Qaz APP TLV
+ * @dcbcfg: Local store to update APP PRIO data
+ *
+ * Parses IEEE 802.1Qaz APP PRIO TLV
+ **/
+static void i40e_parse_ieee_app_tlv(struct i40e_lldp_org_tlv *tlv,
+ struct i40e_dcbx_config *dcbcfg)
+{
+ u16 typelength;
+ u16 offset = 0;
+ u16 length;
+ int i = 0;
+ u8 *buf;
+
+ typelength = ntohs(tlv->typelength);
+ length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
+ I40E_LLDP_TLV_LEN_SHIFT);
+ buf = tlv->tlvinfo;
+
+ /* The App priority table starts 5 octets after TLV header */
+ length -= (sizeof(tlv->ouisubtype) + 1);
+
+ /* Move offset to App Priority Table */
+ offset++;
+
+ /* Application Priority Table (3 octets)
+ * Octets:| 1 | 2 | 3 |
+ * -----------------------------------------
+ * |Priority|Rsrvd| Sel | Protocol ID |
+ * -----------------------------------------
+ * Bits:|23 21|20 19|18 16|15 0|
+ * -----------------------------------------
+ */
+ while (offset < length) {
+ dcbcfg->app[i].priority = (u8)((buf[offset] &
+ I40E_IEEE_APP_PRIO_MASK) >>
+ I40E_IEEE_APP_PRIO_SHIFT);
+ dcbcfg->app[i].selector = (u8)((buf[offset] &
+ I40E_IEEE_APP_SEL_MASK) >>
+ I40E_IEEE_APP_SEL_SHIFT);
+ dcbcfg->app[i].protocolid = (buf[offset + 1] << 0x8) |
+ buf[offset + 2];
+ /* Move to next app */
+ offset += 3;
+ i++;
+ if (i >= I40E_DCBX_MAX_APPS)
+ break;
+ }
+
+ dcbcfg->numapps = i;
+}
+
+/**
+ * i40e_parse_ieee_etsrec_tlv
+ * @tlv: IEEE 802.1Qaz TLV
+ * @dcbcfg: Local store to update ETS REC data
+ *
+ * Get the TLV subtype and send it to parsing function
+ * based on the subtype value
+ **/
+static void i40e_parse_ieee_tlv(struct i40e_lldp_org_tlv *tlv,
+ struct i40e_dcbx_config *dcbcfg)
+{
+ u32 ouisubtype;
+ u8 subtype;
+
+ ouisubtype = ntohl(tlv->ouisubtype);
+ subtype = (u8)((ouisubtype & I40E_LLDP_TLV_SUBTYPE_MASK) >>
+ I40E_LLDP_TLV_SUBTYPE_SHIFT);
+ switch (subtype) {
+ case I40E_IEEE_SUBTYPE_ETS_CFG:
+ i40e_parse_ieee_etscfg_tlv(tlv, dcbcfg);
+ break;
+ case I40E_IEEE_SUBTYPE_ETS_REC:
+ i40e_parse_ieee_etsrec_tlv(tlv, dcbcfg);
+ break;
+ case I40E_IEEE_SUBTYPE_PFC_CFG:
+ i40e_parse_ieee_pfccfg_tlv(tlv, dcbcfg);
+ break;
+ case I40E_IEEE_SUBTYPE_APP_PRI:
+ i40e_parse_ieee_app_tlv(tlv, dcbcfg);
+ break;
+ default:
+ break;
+ }
+}
+
+/**
+ * i40e_parse_org_tlv
+ * @tlv: Organization specific TLV
+ * @dcbcfg: Local store to update ETS REC data
+ *
+ * Currently only IEEE 802.1Qaz TLV is supported, all others
+ * will be returned
+ **/
+static void i40e_parse_org_tlv(struct i40e_lldp_org_tlv *tlv,
+ struct i40e_dcbx_config *dcbcfg)
+{
+ u32 ouisubtype;
+ u32 oui;
+
+ ouisubtype = ntohl(tlv->ouisubtype);
+ oui = (u32)((ouisubtype & I40E_LLDP_TLV_OUI_MASK) >>
+ I40E_LLDP_TLV_OUI_SHIFT);
+ switch (oui) {
+ case I40E_IEEE_8021QAZ_OUI:
+ i40e_parse_ieee_tlv(tlv, dcbcfg);
+ break;
+ default:
+ break;
+ }
+}
+
+/**
+ * i40e_lldp_to_dcb_config
+ * @lldpmib: LLDPDU to be parsed
+ * @dcbcfg: store for LLDPDU data
+ *
+ * Parse DCB configuration from the LLDPDU
+ **/
+i40e_status i40e_lldp_to_dcb_config(u8 *lldpmib,
+ struct i40e_dcbx_config *dcbcfg)
+{
+ i40e_status ret = 0;
+ struct i40e_lldp_org_tlv *tlv;
+ u16 type;
+ u16 length;
+ u16 typelength;
+
+ if (!lldpmib || !dcbcfg)
+ return I40E_ERR_PARAM;
+
+ /* set to the start of LLDPDU */
+ lldpmib += ETH_HLEN;
+ tlv = (struct i40e_lldp_org_tlv *)lldpmib;
+ while (tlv) {
+ typelength = ntohs(tlv->typelength);
+ type = (u16)((typelength & I40E_LLDP_TLV_TYPE_MASK) >>
+ I40E_LLDP_TLV_TYPE_SHIFT);
+ length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
+ I40E_LLDP_TLV_LEN_SHIFT);
+
+ if (type == I40E_TLV_TYPE_END)
+ break;/* END TLV break out */
+
+ switch (type) {
+ case I40E_TLV_TYPE_ORG:
+ i40e_parse_org_tlv(tlv, dcbcfg);
+ break;
+ default:
+ break;
+ }
+
+ /* Move to next TLV */
+ tlv = (struct i40e_lldp_org_tlv *)((char *)tlv +
+ sizeof(tlv->typelength) +
+ length);
+ }
+
+ return ret;
+}
+
+/**
+ * i40e_aq_get_dcb_config
+ * @hw: pointer to the hw struct
+ * @mib_type: mib type for the query
+ * @bridgetype: bridge type for the query (remote)
+ * @dcbcfg: store for LLDPDU data
+ *
+ * Query DCB configuration from the Firmware
+ **/
+i40e_status i40e_aq_get_dcb_config(struct i40e_hw *hw, u8 mib_type,
+ u8 bridgetype,
+ struct i40e_dcbx_config *dcbcfg)
+{
+ i40e_status ret = 0;
+ struct i40e_virt_mem mem;
+ u8 *lldpmib;
+
+ /* Allocate the LLDPDU */
+ ret = i40e_allocate_virt_mem(hw, &mem, I40E_LLDPDU_SIZE);
+ if (ret)
+ return ret;
+
+ lldpmib = (u8 *)mem.va;
+ ret = i40e_aq_get_lldp_mib(hw, bridgetype, mib_type,
+ (void *)lldpmib, I40E_LLDPDU_SIZE,
+ NULL, NULL, NULL);
+ if (ret)
+ goto free_mem;
+
+ /* Parse LLDP MIB to get dcb configuration */
+ ret = i40e_lldp_to_dcb_config(lldpmib, dcbcfg);
+
+free_mem:
+ i40e_free_virt_mem(hw, &mem);
+ return ret;
+}
+
+/**
+ * i40e_get_dcb_config
+ * @hw: pointer to the hw struct
+ *
+ * Get DCB configuration from the Firmware
+ **/
+i40e_status i40e_get_dcb_config(struct i40e_hw *hw)
+{
+ i40e_status ret = 0;
+
+ /* Get Local DCB Config */
+ ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_LOCAL, 0,
+ &hw->local_dcbx_config);
+ if (ret)
+ goto out;
+
+ /* Get Remote DCB Config */
+ ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
+ I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
+ &hw->remote_dcbx_config);
+out:
+ return ret;
+}
+
+/**
+ * i40e_init_dcb
+ * @hw: pointer to the hw struct
+ *
+ * Update DCB configuration from the Firmware
+ **/
+i40e_status i40e_init_dcb(struct i40e_hw *hw)
+{
+ i40e_status ret = 0;
+
+ if (!hw->func_caps.dcb)
+ return ret;
+
+ /* Get DCBX status */
+ ret = i40e_get_dcbx_status(hw, &hw->dcbx_status);
+ if (ret)
+ return ret;
+
+ /* Check the DCBX Status */
+ switch (hw->dcbx_status) {
+ case I40E_DCBX_STATUS_DONE:
+ case I40E_DCBX_STATUS_IN_PROGRESS:
+ /* Get current DCBX configuration */
+ ret = i40e_get_dcb_config(hw);
+ break;
+ case I40E_DCBX_STATUS_DISABLED:
+ return ret;
+ case I40E_DCBX_STATUS_NOT_STARTED:
+ case I40E_DCBX_STATUS_MULTIPLE_PEERS:
+ default:
+ break;
+ }
+
+ /* Configure the LLDP MIB change event */
+ ret = i40e_aq_cfg_lldp_mib_change_event(hw, true, NULL);
+ if (ret)
+ return ret;
+
+ return ret;
+}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.