137b6f646SAnirudh Venkataramanan // SPDX-License-Identifier: GPL-2.0 237b6f646SAnirudh Venkataramanan /* Copyright (c) 2019, Intel Corporation. */ 337b6f646SAnirudh Venkataramanan 437b6f646SAnirudh Venkataramanan #include "ice_dcb_lib.h" 5b94b013eSDave Ertman #include "ice_dcb_nl.h" 637b6f646SAnirudh Venkataramanan 737b6f646SAnirudh Venkataramanan /** 8462acf6aSTony Nguyen * ice_vsi_cfg_netdev_tc - Setup the netdev TC configuration 9462acf6aSTony Nguyen * @vsi: the VSI being configured 10462acf6aSTony Nguyen * @ena_tc: TC map to be enabled 11462acf6aSTony Nguyen */ 12462acf6aSTony Nguyen void ice_vsi_cfg_netdev_tc(struct ice_vsi *vsi, u8 ena_tc) 13462acf6aSTony Nguyen { 14462acf6aSTony Nguyen struct net_device *netdev = vsi->netdev; 15462acf6aSTony Nguyen struct ice_pf *pf = vsi->back; 16462acf6aSTony Nguyen struct ice_dcbx_cfg *dcbcfg; 17462acf6aSTony Nguyen u8 netdev_tc; 18462acf6aSTony Nguyen int i; 19462acf6aSTony Nguyen 20462acf6aSTony Nguyen if (!netdev) 21462acf6aSTony Nguyen return; 22462acf6aSTony Nguyen 23462acf6aSTony Nguyen if (!ena_tc) { 24462acf6aSTony Nguyen netdev_reset_tc(netdev); 25462acf6aSTony Nguyen return; 26462acf6aSTony Nguyen } 27462acf6aSTony Nguyen 28462acf6aSTony Nguyen if (netdev_set_num_tc(netdev, vsi->tc_cfg.numtc)) 29462acf6aSTony Nguyen return; 30462acf6aSTony Nguyen 31462acf6aSTony Nguyen dcbcfg = &pf->hw.port_info->local_dcbx_cfg; 32462acf6aSTony Nguyen 33462acf6aSTony Nguyen ice_for_each_traffic_class(i) 34462acf6aSTony Nguyen if (vsi->tc_cfg.ena_tc & BIT(i)) 35462acf6aSTony Nguyen netdev_set_tc_queue(netdev, 36462acf6aSTony Nguyen vsi->tc_cfg.tc_info[i].netdev_tc, 37462acf6aSTony Nguyen vsi->tc_cfg.tc_info[i].qcount_tx, 38462acf6aSTony Nguyen vsi->tc_cfg.tc_info[i].qoffset); 39462acf6aSTony Nguyen 40462acf6aSTony Nguyen for (i = 0; i < ICE_MAX_USER_PRIORITY; i++) { 41462acf6aSTony Nguyen u8 ets_tc = dcbcfg->etscfg.prio_table[i]; 42462acf6aSTony Nguyen 43462acf6aSTony Nguyen /* Get the mapped netdev TC# for the UP */ 44462acf6aSTony Nguyen netdev_tc = vsi->tc_cfg.tc_info[ets_tc].netdev_tc; 45462acf6aSTony Nguyen netdev_set_prio_tc_map(netdev, i, netdev_tc); 46462acf6aSTony Nguyen } 47462acf6aSTony Nguyen } 48462acf6aSTony Nguyen 49462acf6aSTony Nguyen /** 507b9ffc76SAnirudh Venkataramanan * ice_dcb_get_ena_tc - return bitmap of enabled TCs 517b9ffc76SAnirudh Venkataramanan * @dcbcfg: DCB config to evaluate for enabled TCs 527b9ffc76SAnirudh Venkataramanan */ 537b9ffc76SAnirudh Venkataramanan u8 ice_dcb_get_ena_tc(struct ice_dcbx_cfg *dcbcfg) 547b9ffc76SAnirudh Venkataramanan { 557b9ffc76SAnirudh Venkataramanan u8 i, num_tc, ena_tc = 1; 567b9ffc76SAnirudh Venkataramanan 577b9ffc76SAnirudh Venkataramanan num_tc = ice_dcb_get_num_tc(dcbcfg); 587b9ffc76SAnirudh Venkataramanan 597b9ffc76SAnirudh Venkataramanan for (i = 0; i < num_tc; i++) 607b9ffc76SAnirudh Venkataramanan ena_tc |= BIT(i); 617b9ffc76SAnirudh Venkataramanan 627b9ffc76SAnirudh Venkataramanan return ena_tc; 637b9ffc76SAnirudh Venkataramanan } 647b9ffc76SAnirudh Venkataramanan 657b9ffc76SAnirudh Venkataramanan /** 667b9ffc76SAnirudh Venkataramanan * ice_dcb_get_num_tc - Get the number of TCs from DCBX config 677b9ffc76SAnirudh Venkataramanan * @dcbcfg: config to retrieve number of TCs from 687b9ffc76SAnirudh Venkataramanan */ 697b9ffc76SAnirudh Venkataramanan u8 ice_dcb_get_num_tc(struct ice_dcbx_cfg *dcbcfg) 707b9ffc76SAnirudh Venkataramanan { 717b9ffc76SAnirudh Venkataramanan bool tc_unused = false; 727b9ffc76SAnirudh Venkataramanan u8 num_tc = 0; 737b9ffc76SAnirudh Venkataramanan u8 ret = 0; 747b9ffc76SAnirudh Venkataramanan int i; 757b9ffc76SAnirudh Venkataramanan 767b9ffc76SAnirudh Venkataramanan /* Scan the ETS Config Priority Table to find traffic classes 777b9ffc76SAnirudh Venkataramanan * enabled and create a bitmask of enabled TCs 787b9ffc76SAnirudh Venkataramanan */ 797b9ffc76SAnirudh Venkataramanan for (i = 0; i < CEE_DCBX_MAX_PRIO; i++) 807b9ffc76SAnirudh Venkataramanan num_tc |= BIT(dcbcfg->etscfg.prio_table[i]); 817b9ffc76SAnirudh Venkataramanan 827b9ffc76SAnirudh Venkataramanan /* Scan bitmask for contiguous TCs starting with TC0 */ 837b9ffc76SAnirudh Venkataramanan for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) { 847b9ffc76SAnirudh Venkataramanan if (num_tc & BIT(i)) { 857b9ffc76SAnirudh Venkataramanan if (!tc_unused) { 867b9ffc76SAnirudh Venkataramanan ret++; 877b9ffc76SAnirudh Venkataramanan } else { 887b9ffc76SAnirudh Venkataramanan pr_err("Non-contiguous TCs - Disabling DCB\n"); 897b9ffc76SAnirudh Venkataramanan return 1; 907b9ffc76SAnirudh Venkataramanan } 917b9ffc76SAnirudh Venkataramanan } else { 927b9ffc76SAnirudh Venkataramanan tc_unused = true; 937b9ffc76SAnirudh Venkataramanan } 947b9ffc76SAnirudh Venkataramanan } 957b9ffc76SAnirudh Venkataramanan 967b9ffc76SAnirudh Venkataramanan /* There is always at least 1 TC */ 977b9ffc76SAnirudh Venkataramanan if (!ret) 987b9ffc76SAnirudh Venkataramanan ret = 1; 997b9ffc76SAnirudh Venkataramanan 1007b9ffc76SAnirudh Venkataramanan return ret; 1017b9ffc76SAnirudh Venkataramanan } 1027b9ffc76SAnirudh Venkataramanan 1037b9ffc76SAnirudh Venkataramanan /** 1041ddef455SUsha Ketineni * ice_dcb_get_tc - Get the TC associated with the queue 1051ddef455SUsha Ketineni * @vsi: ptr to the VSI 1061ddef455SUsha Ketineni * @queue_index: queue number associated with VSI 1071ddef455SUsha Ketineni */ 1081ddef455SUsha Ketineni u8 ice_dcb_get_tc(struct ice_vsi *vsi, int queue_index) 1091ddef455SUsha Ketineni { 1101ddef455SUsha Ketineni return vsi->tx_rings[queue_index]->dcb_tc; 1111ddef455SUsha Ketineni } 1121ddef455SUsha Ketineni 1131ddef455SUsha Ketineni /** 114a629cf0aSAnirudh Venkataramanan * ice_vsi_cfg_dcb_rings - Update rings to reflect DCB TC 115a629cf0aSAnirudh Venkataramanan * @vsi: VSI owner of rings being updated 116a629cf0aSAnirudh Venkataramanan */ 117a629cf0aSAnirudh Venkataramanan void ice_vsi_cfg_dcb_rings(struct ice_vsi *vsi) 118a629cf0aSAnirudh Venkataramanan { 119a629cf0aSAnirudh Venkataramanan struct ice_ring *tx_ring, *rx_ring; 120a629cf0aSAnirudh Venkataramanan u16 qoffset, qcount; 121a629cf0aSAnirudh Venkataramanan int i, n; 122a629cf0aSAnirudh Venkataramanan 123a629cf0aSAnirudh Venkataramanan if (!test_bit(ICE_FLAG_DCB_ENA, vsi->back->flags)) { 124a629cf0aSAnirudh Venkataramanan /* Reset the TC information */ 125a629cf0aSAnirudh Venkataramanan for (i = 0; i < vsi->num_txq; i++) { 126a629cf0aSAnirudh Venkataramanan tx_ring = vsi->tx_rings[i]; 127a629cf0aSAnirudh Venkataramanan tx_ring->dcb_tc = 0; 128a629cf0aSAnirudh Venkataramanan } 129a629cf0aSAnirudh Venkataramanan for (i = 0; i < vsi->num_rxq; i++) { 130a629cf0aSAnirudh Venkataramanan rx_ring = vsi->rx_rings[i]; 131a629cf0aSAnirudh Venkataramanan rx_ring->dcb_tc = 0; 132a629cf0aSAnirudh Venkataramanan } 133a629cf0aSAnirudh Venkataramanan return; 134a629cf0aSAnirudh Venkataramanan } 135a629cf0aSAnirudh Venkataramanan 136a629cf0aSAnirudh Venkataramanan ice_for_each_traffic_class(n) { 137a629cf0aSAnirudh Venkataramanan if (!(vsi->tc_cfg.ena_tc & BIT(n))) 138a629cf0aSAnirudh Venkataramanan break; 139a629cf0aSAnirudh Venkataramanan 140a629cf0aSAnirudh Venkataramanan qoffset = vsi->tc_cfg.tc_info[n].qoffset; 141a629cf0aSAnirudh Venkataramanan qcount = vsi->tc_cfg.tc_info[n].qcount_tx; 142a629cf0aSAnirudh Venkataramanan for (i = qoffset; i < (qoffset + qcount); i++) { 143a629cf0aSAnirudh Venkataramanan tx_ring = vsi->tx_rings[i]; 144a629cf0aSAnirudh Venkataramanan rx_ring = vsi->rx_rings[i]; 145a629cf0aSAnirudh Venkataramanan tx_ring->dcb_tc = n; 146a629cf0aSAnirudh Venkataramanan rx_ring->dcb_tc = n; 147a629cf0aSAnirudh Venkataramanan } 148a629cf0aSAnirudh Venkataramanan } 149a629cf0aSAnirudh Venkataramanan } 150a629cf0aSAnirudh Venkataramanan 151a629cf0aSAnirudh Venkataramanan /** 152a29a912dSAvinash Dayanand * ice_dcb_bwchk - check if ETS bandwidth input parameters are correct 153a29a912dSAvinash Dayanand * @pf: pointer to the PF struct 154a29a912dSAvinash Dayanand * @dcbcfg: pointer to DCB config structure 155a29a912dSAvinash Dayanand */ 156a29a912dSAvinash Dayanand int ice_dcb_bwchk(struct ice_pf *pf, struct ice_dcbx_cfg *dcbcfg) 157a29a912dSAvinash Dayanand { 158a29a912dSAvinash Dayanand struct ice_dcb_ets_cfg *etscfg = &dcbcfg->etscfg; 159a29a912dSAvinash Dayanand u8 num_tc, total_bw = 0; 160a29a912dSAvinash Dayanand int i; 161a29a912dSAvinash Dayanand 162a29a912dSAvinash Dayanand /* returns number of contigous TCs and 1 TC for non-contigous TCs, 163a29a912dSAvinash Dayanand * since at least 1 TC has to be configured 164a29a912dSAvinash Dayanand */ 165a29a912dSAvinash Dayanand num_tc = ice_dcb_get_num_tc(dcbcfg); 166a29a912dSAvinash Dayanand 167a29a912dSAvinash Dayanand /* no bandwidth checks required if there's only one TC, so assign 168a29a912dSAvinash Dayanand * all bandwidth to TC0 and return 169a29a912dSAvinash Dayanand */ 170a29a912dSAvinash Dayanand if (num_tc == 1) { 171a29a912dSAvinash Dayanand etscfg->tcbwtable[0] = ICE_TC_MAX_BW; 172a29a912dSAvinash Dayanand return 0; 173a29a912dSAvinash Dayanand } 174a29a912dSAvinash Dayanand 175a29a912dSAvinash Dayanand for (i = 0; i < num_tc; i++) 176a29a912dSAvinash Dayanand total_bw += etscfg->tcbwtable[i]; 177a29a912dSAvinash Dayanand 178a29a912dSAvinash Dayanand if (!total_bw) { 179a29a912dSAvinash Dayanand etscfg->tcbwtable[0] = ICE_TC_MAX_BW; 180a29a912dSAvinash Dayanand } else if (total_bw != ICE_TC_MAX_BW) { 181a29a912dSAvinash Dayanand dev_err(ice_pf_to_dev(pf), "Invalid config, total bandwidth must equal 100\n"); 182a29a912dSAvinash Dayanand return -EINVAL; 183a29a912dSAvinash Dayanand } 184a29a912dSAvinash Dayanand 185a29a912dSAvinash Dayanand return 0; 186a29a912dSAvinash Dayanand } 187a29a912dSAvinash Dayanand 188a29a912dSAvinash Dayanand /** 1897b9ffc76SAnirudh Venkataramanan * ice_pf_dcb_cfg - Apply new DCB configuration 1907b9ffc76SAnirudh Venkataramanan * @pf: pointer to the PF struct 1917b9ffc76SAnirudh Venkataramanan * @new_cfg: DCBX config to apply 192e223eaecSDave Ertman * @locked: is the RTNL held 1937b9ffc76SAnirudh Venkataramanan */ 194e223eaecSDave Ertman int ice_pf_dcb_cfg(struct ice_pf *pf, struct ice_dcbx_cfg *new_cfg, bool locked) 1957b9ffc76SAnirudh Venkataramanan { 1967b9ffc76SAnirudh Venkataramanan struct ice_aqc_port_ets_elem buf = { 0 }; 197b94b013eSDave Ertman struct ice_dcbx_cfg *old_cfg, *curr_cfg; 1984015d11eSBrett Creeley struct device *dev = ice_pf_to_dev(pf); 199b94b013eSDave Ertman int ret = ICE_DCB_NO_HW_CHG; 2009d614b64SAnirudh Venkataramanan struct ice_vsi *pf_vsi; 2017b9ffc76SAnirudh Venkataramanan 2027b9ffc76SAnirudh Venkataramanan curr_cfg = &pf->hw.port_info->local_dcbx_cfg; 2037b9ffc76SAnirudh Venkataramanan 204b94b013eSDave Ertman /* FW does not care if change happened */ 205b94b013eSDave Ertman if (!pf->hw.port_info->is_sw_lldp) 206b94b013eSDave Ertman ret = ICE_DCB_HW_CHG_RST; 207b94b013eSDave Ertman 2087b9ffc76SAnirudh Venkataramanan /* Enable DCB tagging only when more than one TC */ 2097b9ffc76SAnirudh Venkataramanan if (ice_dcb_get_num_tc(new_cfg) > 1) { 2104015d11eSBrett Creeley dev_dbg(dev, "DCB tagging enabled (num TC > 1)\n"); 2117b9ffc76SAnirudh Venkataramanan set_bit(ICE_FLAG_DCB_ENA, pf->flags); 2127b9ffc76SAnirudh Venkataramanan } else { 2134015d11eSBrett Creeley dev_dbg(dev, "DCB tagging disabled (num TC = 1)\n"); 2147b9ffc76SAnirudh Venkataramanan clear_bit(ICE_FLAG_DCB_ENA, pf->flags); 2157b9ffc76SAnirudh Venkataramanan } 2167b9ffc76SAnirudh Venkataramanan 2177b9ffc76SAnirudh Venkataramanan if (!memcmp(new_cfg, curr_cfg, sizeof(*new_cfg))) { 2184015d11eSBrett Creeley dev_dbg(dev, "No change in DCB config required\n"); 2197b9ffc76SAnirudh Venkataramanan return ret; 2207b9ffc76SAnirudh Venkataramanan } 2217b9ffc76SAnirudh Venkataramanan 222a29a912dSAvinash Dayanand if (ice_dcb_bwchk(pf, new_cfg)) 223a29a912dSAvinash Dayanand return -EINVAL; 224a29a912dSAvinash Dayanand 2257b9ffc76SAnirudh Venkataramanan /* Store old config in case FW config fails */ 2269d614b64SAnirudh Venkataramanan old_cfg = kmemdup(curr_cfg, sizeof(*old_cfg), GFP_KERNEL); 2279d614b64SAnirudh Venkataramanan if (!old_cfg) 2289d614b64SAnirudh Venkataramanan return -ENOMEM; 2299d614b64SAnirudh Venkataramanan 2304015d11eSBrett Creeley dev_info(dev, "Commit DCB Configuration to the hardware\n"); 2319d614b64SAnirudh Venkataramanan pf_vsi = ice_get_main_vsi(pf); 2329d614b64SAnirudh Venkataramanan if (!pf_vsi) { 2334015d11eSBrett Creeley dev_dbg(dev, "PF VSI doesn't exist\n"); 2349d614b64SAnirudh Venkataramanan ret = -EINVAL; 2359d614b64SAnirudh Venkataramanan goto free_cfg; 2369d614b64SAnirudh Venkataramanan } 2377b9ffc76SAnirudh Venkataramanan 2387b9ffc76SAnirudh Venkataramanan /* avoid race conditions by holding the lock while disabling and 2397b9ffc76SAnirudh Venkataramanan * re-enabling the VSI 2407b9ffc76SAnirudh Venkataramanan */ 241e223eaecSDave Ertman if (!locked) 2427b9ffc76SAnirudh Venkataramanan rtnl_lock(); 2439d614b64SAnirudh Venkataramanan ice_dis_vsi(pf_vsi, true); 2447b9ffc76SAnirudh Venkataramanan 2457b9ffc76SAnirudh Venkataramanan memcpy(curr_cfg, new_cfg, sizeof(*curr_cfg)); 2467b9ffc76SAnirudh Venkataramanan memcpy(&curr_cfg->etsrec, &curr_cfg->etscfg, sizeof(curr_cfg->etsrec)); 247b94b013eSDave Ertman memcpy(&new_cfg->etsrec, &curr_cfg->etscfg, sizeof(curr_cfg->etsrec)); 2487b9ffc76SAnirudh Venkataramanan 2497b9ffc76SAnirudh Venkataramanan /* Only send new config to HW if we are in SW LLDP mode. Otherwise, 2507b9ffc76SAnirudh Venkataramanan * the new config came from the HW in the first place. 2517b9ffc76SAnirudh Venkataramanan */ 2527b9ffc76SAnirudh Venkataramanan if (pf->hw.port_info->is_sw_lldp) { 2537b9ffc76SAnirudh Venkataramanan ret = ice_set_dcb_cfg(pf->hw.port_info); 2547b9ffc76SAnirudh Venkataramanan if (ret) { 2554015d11eSBrett Creeley dev_err(dev, "Set DCB Config failed\n"); 2567b9ffc76SAnirudh Venkataramanan /* Restore previous settings to local config */ 2577b9ffc76SAnirudh Venkataramanan memcpy(curr_cfg, old_cfg, sizeof(*curr_cfg)); 2587b9ffc76SAnirudh Venkataramanan goto out; 2597b9ffc76SAnirudh Venkataramanan } 2607b9ffc76SAnirudh Venkataramanan } 2617b9ffc76SAnirudh Venkataramanan 2627b9ffc76SAnirudh Venkataramanan ret = ice_query_port_ets(pf->hw.port_info, &buf, sizeof(buf), NULL); 2637b9ffc76SAnirudh Venkataramanan if (ret) { 2644015d11eSBrett Creeley dev_err(dev, "Query Port ETS failed\n"); 2657b9ffc76SAnirudh Venkataramanan goto out; 2667b9ffc76SAnirudh Venkataramanan } 2677b9ffc76SAnirudh Venkataramanan 2687b9ffc76SAnirudh Venkataramanan ice_pf_dcb_recfg(pf); 2697b9ffc76SAnirudh Venkataramanan 2707b9ffc76SAnirudh Venkataramanan out: 2719d614b64SAnirudh Venkataramanan ice_ena_vsi(pf_vsi, true); 272e223eaecSDave Ertman if (!locked) 2737b9ffc76SAnirudh Venkataramanan rtnl_unlock(); 2749d614b64SAnirudh Venkataramanan free_cfg: 2759d614b64SAnirudh Venkataramanan kfree(old_cfg); 2767b9ffc76SAnirudh Venkataramanan return ret; 2777b9ffc76SAnirudh Venkataramanan } 2787b9ffc76SAnirudh Venkataramanan 2797b9ffc76SAnirudh Venkataramanan /** 2807829570eSUsha Ketineni * ice_cfg_etsrec_defaults - Set default ETS recommended DCB config 2817829570eSUsha Ketineni * @pi: port information structure 2827829570eSUsha Ketineni */ 2837829570eSUsha Ketineni static void ice_cfg_etsrec_defaults(struct ice_port_info *pi) 2847829570eSUsha Ketineni { 2857829570eSUsha Ketineni struct ice_dcbx_cfg *dcbcfg = &pi->local_dcbx_cfg; 2867829570eSUsha Ketineni u8 i; 2877829570eSUsha Ketineni 2887829570eSUsha Ketineni /* Ensure ETS recommended DCB configuration is not already set */ 2897829570eSUsha Ketineni if (dcbcfg->etsrec.maxtcs) 2907829570eSUsha Ketineni return; 2917829570eSUsha Ketineni 2927829570eSUsha Ketineni /* In CEE mode, set the default to 1 TC */ 2937829570eSUsha Ketineni dcbcfg->etsrec.maxtcs = 1; 2947829570eSUsha Ketineni for (i = 0; i < ICE_MAX_TRAFFIC_CLASS; i++) { 2957829570eSUsha Ketineni dcbcfg->etsrec.tcbwtable[i] = i ? 0 : 100; 2967829570eSUsha Ketineni dcbcfg->etsrec.tsatable[i] = i ? ICE_IEEE_TSA_STRICT : 2977829570eSUsha Ketineni ICE_IEEE_TSA_ETS; 2987829570eSUsha Ketineni } 2997829570eSUsha Ketineni } 3007829570eSUsha Ketineni 3017829570eSUsha Ketineni /** 3027829570eSUsha Ketineni * ice_dcb_need_recfg - Check if DCB needs reconfig 3037829570eSUsha Ketineni * @pf: board private structure 3047829570eSUsha Ketineni * @old_cfg: current DCB config 3057829570eSUsha Ketineni * @new_cfg: new DCB config 3067829570eSUsha Ketineni */ 3077829570eSUsha Ketineni static bool 3087829570eSUsha Ketineni ice_dcb_need_recfg(struct ice_pf *pf, struct ice_dcbx_cfg *old_cfg, 3097829570eSUsha Ketineni struct ice_dcbx_cfg *new_cfg) 3107829570eSUsha Ketineni { 3114015d11eSBrett Creeley struct device *dev = ice_pf_to_dev(pf); 3127829570eSUsha Ketineni bool need_reconfig = false; 3137829570eSUsha Ketineni 3147829570eSUsha Ketineni /* Check if ETS configuration has changed */ 3157829570eSUsha Ketineni if (memcmp(&new_cfg->etscfg, &old_cfg->etscfg, 3167829570eSUsha Ketineni sizeof(new_cfg->etscfg))) { 3177829570eSUsha Ketineni /* If Priority Table has changed reconfig is needed */ 3187829570eSUsha Ketineni if (memcmp(&new_cfg->etscfg.prio_table, 3197829570eSUsha Ketineni &old_cfg->etscfg.prio_table, 3207829570eSUsha Ketineni sizeof(new_cfg->etscfg.prio_table))) { 3217829570eSUsha Ketineni need_reconfig = true; 3224015d11eSBrett Creeley dev_dbg(dev, "ETS UP2TC changed.\n"); 3237829570eSUsha Ketineni } 3247829570eSUsha Ketineni 3257829570eSUsha Ketineni if (memcmp(&new_cfg->etscfg.tcbwtable, 3267829570eSUsha Ketineni &old_cfg->etscfg.tcbwtable, 3277829570eSUsha Ketineni sizeof(new_cfg->etscfg.tcbwtable))) 3284015d11eSBrett Creeley dev_dbg(dev, "ETS TC BW Table changed.\n"); 3297829570eSUsha Ketineni 3307829570eSUsha Ketineni if (memcmp(&new_cfg->etscfg.tsatable, 3317829570eSUsha Ketineni &old_cfg->etscfg.tsatable, 3327829570eSUsha Ketineni sizeof(new_cfg->etscfg.tsatable))) 3334015d11eSBrett Creeley dev_dbg(dev, "ETS TSA Table changed.\n"); 3347829570eSUsha Ketineni } 3357829570eSUsha Ketineni 3367829570eSUsha Ketineni /* Check if PFC configuration has changed */ 3377829570eSUsha Ketineni if (memcmp(&new_cfg->pfc, &old_cfg->pfc, sizeof(new_cfg->pfc))) { 3387829570eSUsha Ketineni need_reconfig = true; 3394015d11eSBrett Creeley dev_dbg(dev, "PFC config change detected.\n"); 3407829570eSUsha Ketineni } 3417829570eSUsha Ketineni 3427829570eSUsha Ketineni /* Check if APP Table has changed */ 3437829570eSUsha Ketineni if (memcmp(&new_cfg->app, &old_cfg->app, sizeof(new_cfg->app))) { 3447829570eSUsha Ketineni need_reconfig = true; 3454015d11eSBrett Creeley dev_dbg(dev, "APP Table change detected.\n"); 3467829570eSUsha Ketineni } 3477829570eSUsha Ketineni 3484015d11eSBrett Creeley dev_dbg(dev, "dcb need_reconfig=%d\n", need_reconfig); 3497829570eSUsha Ketineni return need_reconfig; 3507829570eSUsha Ketineni } 3517829570eSUsha Ketineni 3527829570eSUsha Ketineni /** 353b832c2f6SAnirudh Venkataramanan * ice_dcb_rebuild - rebuild DCB post reset 354b832c2f6SAnirudh Venkataramanan * @pf: physical function instance 355b832c2f6SAnirudh Venkataramanan */ 356b832c2f6SAnirudh Venkataramanan void ice_dcb_rebuild(struct ice_pf *pf) 357b832c2f6SAnirudh Venkataramanan { 358b832c2f6SAnirudh Venkataramanan struct ice_aqc_port_ets_elem buf = { 0 }; 3594015d11eSBrett Creeley struct device *dev = ice_pf_to_dev(pf); 360242b5e06SDave Ertman struct ice_dcbx_cfg *err_cfg; 361b832c2f6SAnirudh Venkataramanan enum ice_status ret; 362b832c2f6SAnirudh Venkataramanan 363b832c2f6SAnirudh Venkataramanan ret = ice_query_port_ets(pf->hw.port_info, &buf, sizeof(buf), NULL); 364b832c2f6SAnirudh Venkataramanan if (ret) { 3654015d11eSBrett Creeley dev_err(dev, "Query Port ETS failed\n"); 366b832c2f6SAnirudh Venkataramanan goto dcb_error; 367b832c2f6SAnirudh Venkataramanan } 368b832c2f6SAnirudh Venkataramanan 369b832c2f6SAnirudh Venkataramanan /* If DCB was not enabled previously, we are done */ 370b832c2f6SAnirudh Venkataramanan if (!test_bit(ICE_FLAG_DCB_ENA, pf->flags)) 371b832c2f6SAnirudh Venkataramanan return; 372b832c2f6SAnirudh Venkataramanan 373242b5e06SDave Ertman mutex_lock(&pf->tc_mutex); 3747829570eSUsha Ketineni 375242b5e06SDave Ertman if (!pf->hw.port_info->is_sw_lldp) 3767829570eSUsha Ketineni ice_cfg_etsrec_defaults(pf->hw.port_info); 377242b5e06SDave Ertman 378b832c2f6SAnirudh Venkataramanan ret = ice_set_dcb_cfg(pf->hw.port_info); 379b832c2f6SAnirudh Venkataramanan if (ret) { 380242b5e06SDave Ertman dev_err(dev, "Failed to set DCB config in rebuild\n"); 381b832c2f6SAnirudh Venkataramanan goto dcb_error; 382b832c2f6SAnirudh Venkataramanan } 383b832c2f6SAnirudh Venkataramanan 384242b5e06SDave Ertman if (!pf->hw.port_info->is_sw_lldp) { 385242b5e06SDave Ertman ret = ice_cfg_lldp_mib_change(&pf->hw, true); 386242b5e06SDave Ertman if (ret && !pf->hw.port_info->is_sw_lldp) { 387242b5e06SDave Ertman dev_err(dev, "Failed to register for MIB changes\n"); 388b832c2f6SAnirudh Venkataramanan goto dcb_error; 389b832c2f6SAnirudh Venkataramanan } 390b832c2f6SAnirudh Venkataramanan } 391242b5e06SDave Ertman 3924015d11eSBrett Creeley dev_info(dev, "DCB restored after reset\n"); 393b832c2f6SAnirudh Venkataramanan ret = ice_query_port_ets(pf->hw.port_info, &buf, sizeof(buf), NULL); 394b832c2f6SAnirudh Venkataramanan if (ret) { 3954015d11eSBrett Creeley dev_err(dev, "Query Port ETS failed\n"); 396b832c2f6SAnirudh Venkataramanan goto dcb_error; 397b832c2f6SAnirudh Venkataramanan } 398b832c2f6SAnirudh Venkataramanan 399242b5e06SDave Ertman mutex_unlock(&pf->tc_mutex); 400242b5e06SDave Ertman 401b832c2f6SAnirudh Venkataramanan return; 402b832c2f6SAnirudh Venkataramanan 403b832c2f6SAnirudh Venkataramanan dcb_error: 4044015d11eSBrett Creeley dev_err(dev, "Disabling DCB until new settings occur\n"); 405242b5e06SDave Ertman err_cfg = kzalloc(sizeof(*err_cfg), GFP_KERNEL); 406242b5e06SDave Ertman if (!err_cfg) { 407242b5e06SDave Ertman mutex_unlock(&pf->tc_mutex); 4089efe35d0STony Nguyen return; 409242b5e06SDave Ertman } 4109efe35d0STony Nguyen 411242b5e06SDave Ertman err_cfg->etscfg.willing = true; 412242b5e06SDave Ertman err_cfg->etscfg.tcbwtable[0] = ICE_TC_MAX_BW; 413242b5e06SDave Ertman err_cfg->etscfg.tsatable[0] = ICE_IEEE_TSA_ETS; 414242b5e06SDave Ertman memcpy(&err_cfg->etsrec, &err_cfg->etscfg, sizeof(err_cfg->etsrec)); 415ac614b13SBruce Allan /* Coverity warns the return code of ice_pf_dcb_cfg() is not checked 416ac614b13SBruce Allan * here as is done for other calls to that function. That check is 417ac614b13SBruce Allan * not necessary since this is in this function's error cleanup path. 418ac614b13SBruce Allan * Suppress the Coverity warning with the following comment... 419ac614b13SBruce Allan */ 420ac614b13SBruce Allan /* coverity[check_return] */ 421242b5e06SDave Ertman ice_pf_dcb_cfg(pf, err_cfg, false); 422242b5e06SDave Ertman kfree(err_cfg); 423242b5e06SDave Ertman 424242b5e06SDave Ertman mutex_unlock(&pf->tc_mutex); 425b832c2f6SAnirudh Venkataramanan } 426b832c2f6SAnirudh Venkataramanan 427b832c2f6SAnirudh Venkataramanan /** 4287b9ffc76SAnirudh Venkataramanan * ice_dcb_init_cfg - set the initial DCB config in SW 4292f2da36eSAnirudh Venkataramanan * @pf: PF to apply config to 430e223eaecSDave Ertman * @locked: Is the RTNL held 4317b9ffc76SAnirudh Venkataramanan */ 432e223eaecSDave Ertman static int ice_dcb_init_cfg(struct ice_pf *pf, bool locked) 4337b9ffc76SAnirudh Venkataramanan { 4347b9ffc76SAnirudh Venkataramanan struct ice_dcbx_cfg *newcfg; 4357b9ffc76SAnirudh Venkataramanan struct ice_port_info *pi; 4367b9ffc76SAnirudh Venkataramanan int ret = 0; 4377b9ffc76SAnirudh Venkataramanan 4387b9ffc76SAnirudh Venkataramanan pi = pf->hw.port_info; 4399efe35d0STony Nguyen newcfg = kmemdup(&pi->local_dcbx_cfg, sizeof(*newcfg), GFP_KERNEL); 4407b9ffc76SAnirudh Venkataramanan if (!newcfg) 4417b9ffc76SAnirudh Venkataramanan return -ENOMEM; 4427b9ffc76SAnirudh Venkataramanan 4437b9ffc76SAnirudh Venkataramanan memset(&pi->local_dcbx_cfg, 0, sizeof(*newcfg)); 4447b9ffc76SAnirudh Venkataramanan 4454015d11eSBrett Creeley dev_info(ice_pf_to_dev(pf), "Configuring initial DCB values\n"); 446e223eaecSDave Ertman if (ice_pf_dcb_cfg(pf, newcfg, locked)) 4477b9ffc76SAnirudh Venkataramanan ret = -EINVAL; 4487b9ffc76SAnirudh Venkataramanan 4499efe35d0STony Nguyen kfree(newcfg); 4507b9ffc76SAnirudh Venkataramanan 4517b9ffc76SAnirudh Venkataramanan return ret; 4527b9ffc76SAnirudh Venkataramanan } 4537b9ffc76SAnirudh Venkataramanan 4547b9ffc76SAnirudh Venkataramanan /** 4554ee656bbSTony Nguyen * ice_dcb_sw_dflt_cfg - Apply a default DCB config 4562f2da36eSAnirudh Venkataramanan * @pf: PF to apply config to 4574ee656bbSTony Nguyen * @ets_willing: configure ETS willing 458e223eaecSDave Ertman * @locked: was this function called with RTNL held 4590deab659SAnirudh Venkataramanan */ 460cfbf1367SPaul Greenwalt static int ice_dcb_sw_dflt_cfg(struct ice_pf *pf, bool ets_willing, bool locked) 4610deab659SAnirudh Venkataramanan { 4620deab659SAnirudh Venkataramanan struct ice_aqc_port_ets_elem buf = { 0 }; 4630deab659SAnirudh Venkataramanan struct ice_dcbx_cfg *dcbcfg; 4640deab659SAnirudh Venkataramanan struct ice_port_info *pi; 4650deab659SAnirudh Venkataramanan struct ice_hw *hw; 4660deab659SAnirudh Venkataramanan int ret; 4670deab659SAnirudh Venkataramanan 4680deab659SAnirudh Venkataramanan hw = &pf->hw; 4690deab659SAnirudh Venkataramanan pi = hw->port_info; 4709efe35d0STony Nguyen dcbcfg = kzalloc(sizeof(*dcbcfg), GFP_KERNEL); 4719efe35d0STony Nguyen if (!dcbcfg) 4729efe35d0STony Nguyen return -ENOMEM; 4730deab659SAnirudh Venkataramanan 4740deab659SAnirudh Venkataramanan memset(&pi->local_dcbx_cfg, 0, sizeof(*dcbcfg)); 4750deab659SAnirudh Venkataramanan 476cfbf1367SPaul Greenwalt dcbcfg->etscfg.willing = ets_willing ? 1 : 0; 477a257f188SUsha Ketineni dcbcfg->etscfg.maxtcs = hw->func_caps.common_cap.maxtc; 4780deab659SAnirudh Venkataramanan dcbcfg->etscfg.tcbwtable[0] = 100; 4790deab659SAnirudh Venkataramanan dcbcfg->etscfg.tsatable[0] = ICE_IEEE_TSA_ETS; 4800deab659SAnirudh Venkataramanan 4810deab659SAnirudh Venkataramanan memcpy(&dcbcfg->etsrec, &dcbcfg->etscfg, 4820deab659SAnirudh Venkataramanan sizeof(dcbcfg->etsrec)); 4830deab659SAnirudh Venkataramanan dcbcfg->etsrec.willing = 0; 4840deab659SAnirudh Venkataramanan 4850deab659SAnirudh Venkataramanan dcbcfg->pfc.willing = 1; 486a257f188SUsha Ketineni dcbcfg->pfc.pfccap = hw->func_caps.common_cap.maxtc; 4870deab659SAnirudh Venkataramanan 4880deab659SAnirudh Venkataramanan dcbcfg->numapps = 1; 4890deab659SAnirudh Venkataramanan dcbcfg->app[0].selector = ICE_APP_SEL_ETHTYPE; 4900deab659SAnirudh Venkataramanan dcbcfg->app[0].priority = 3; 4910deab659SAnirudh Venkataramanan dcbcfg->app[0].prot_id = ICE_APP_PROT_ID_FCOE; 4920deab659SAnirudh Venkataramanan 493e223eaecSDave Ertman ret = ice_pf_dcb_cfg(pf, dcbcfg, locked); 4949efe35d0STony Nguyen kfree(dcbcfg); 4950deab659SAnirudh Venkataramanan if (ret) 4960deab659SAnirudh Venkataramanan return ret; 4970deab659SAnirudh Venkataramanan 4980deab659SAnirudh Venkataramanan return ice_query_port_ets(pi, &buf, sizeof(buf), NULL); 4990deab659SAnirudh Venkataramanan } 5000deab659SAnirudh Venkataramanan 5010deab659SAnirudh Venkataramanan /** 502cfbf1367SPaul Greenwalt * ice_dcb_tc_contig - Check that TCs are contiguous 503cfbf1367SPaul Greenwalt * @prio_table: pointer to priority table 504cfbf1367SPaul Greenwalt * 505cfbf1367SPaul Greenwalt * Check if TCs begin with TC0 and are contiguous 506cfbf1367SPaul Greenwalt */ 507cfbf1367SPaul Greenwalt static bool ice_dcb_tc_contig(u8 *prio_table) 508cfbf1367SPaul Greenwalt { 509cfbf1367SPaul Greenwalt u8 max_tc = 0; 510cfbf1367SPaul Greenwalt int i; 511cfbf1367SPaul Greenwalt 512cfbf1367SPaul Greenwalt for (i = 0; i < CEE_DCBX_MAX_PRIO; i++) { 513cfbf1367SPaul Greenwalt u8 cur_tc = prio_table[i]; 514cfbf1367SPaul Greenwalt 515cfbf1367SPaul Greenwalt if (cur_tc > max_tc) 516cfbf1367SPaul Greenwalt return false; 517cfbf1367SPaul Greenwalt else if (cur_tc == max_tc) 518cfbf1367SPaul Greenwalt max_tc++; 519cfbf1367SPaul Greenwalt } 520cfbf1367SPaul Greenwalt 521cfbf1367SPaul Greenwalt return true; 522cfbf1367SPaul Greenwalt } 523cfbf1367SPaul Greenwalt 524cfbf1367SPaul Greenwalt /** 525cfbf1367SPaul Greenwalt * ice_dcb_noncontig_cfg - Configure DCB for non-contiguous TCs 526cfbf1367SPaul Greenwalt * @pf: pointer to the PF struct 527cfbf1367SPaul Greenwalt * 528cfbf1367SPaul Greenwalt * If non-contiguous TCs, then configure SW DCB with TC0 and ETS non-willing 529cfbf1367SPaul Greenwalt */ 530cfbf1367SPaul Greenwalt static int ice_dcb_noncontig_cfg(struct ice_pf *pf) 531cfbf1367SPaul Greenwalt { 532cfbf1367SPaul Greenwalt struct ice_dcbx_cfg *dcbcfg = &pf->hw.port_info->local_dcbx_cfg; 5334015d11eSBrett Creeley struct device *dev = ice_pf_to_dev(pf); 534cfbf1367SPaul Greenwalt int ret; 535cfbf1367SPaul Greenwalt 536cfbf1367SPaul Greenwalt /* Configure SW DCB default with ETS non-willing */ 537cfbf1367SPaul Greenwalt ret = ice_dcb_sw_dflt_cfg(pf, false, true); 538cfbf1367SPaul Greenwalt if (ret) { 5394015d11eSBrett Creeley dev_err(dev, "Failed to set local DCB config %d\n", ret); 540cfbf1367SPaul Greenwalt return ret; 541cfbf1367SPaul Greenwalt } 542cfbf1367SPaul Greenwalt 543cfbf1367SPaul Greenwalt /* Reconfigure with ETS willing so that FW will send LLDP MIB event */ 544cfbf1367SPaul Greenwalt dcbcfg->etscfg.willing = 1; 545cfbf1367SPaul Greenwalt ret = ice_set_dcb_cfg(pf->hw.port_info); 546cfbf1367SPaul Greenwalt if (ret) 5474015d11eSBrett Creeley dev_err(dev, "Failed to set DCB to unwilling\n"); 548cfbf1367SPaul Greenwalt 549cfbf1367SPaul Greenwalt return ret; 550cfbf1367SPaul Greenwalt } 551cfbf1367SPaul Greenwalt 552cfbf1367SPaul Greenwalt /** 553cfbf1367SPaul Greenwalt * ice_pf_dcb_recfg - Reconfigure all VEBs and VSIs 554cfbf1367SPaul Greenwalt * @pf: pointer to the PF struct 555cfbf1367SPaul Greenwalt * 556cfbf1367SPaul Greenwalt * Assumed caller has already disabled all VSIs before 557cfbf1367SPaul Greenwalt * calling this function. Reconfiguring DCB based on 558cfbf1367SPaul Greenwalt * local_dcbx_cfg. 559cfbf1367SPaul Greenwalt */ 56087324e74SHenry Tieman void ice_pf_dcb_recfg(struct ice_pf *pf) 561cfbf1367SPaul Greenwalt { 562cfbf1367SPaul Greenwalt struct ice_dcbx_cfg *dcbcfg = &pf->hw.port_info->local_dcbx_cfg; 563cfbf1367SPaul Greenwalt u8 tc_map = 0; 564cfbf1367SPaul Greenwalt int v, ret; 565cfbf1367SPaul Greenwalt 566cfbf1367SPaul Greenwalt /* Update each VSI */ 567cfbf1367SPaul Greenwalt ice_for_each_vsi(pf, v) { 5684015d11eSBrett Creeley struct ice_vsi *vsi = pf->vsi[v]; 5694015d11eSBrett Creeley 5704015d11eSBrett Creeley if (!vsi) 571cfbf1367SPaul Greenwalt continue; 572cfbf1367SPaul Greenwalt 5734015d11eSBrett Creeley if (vsi->type == ICE_VSI_PF) { 574cfbf1367SPaul Greenwalt tc_map = ice_dcb_get_ena_tc(dcbcfg); 575cfbf1367SPaul Greenwalt 576cfbf1367SPaul Greenwalt /* If DCBX request non-contiguous TC, then configure 577cfbf1367SPaul Greenwalt * default TC 578cfbf1367SPaul Greenwalt */ 579cfbf1367SPaul Greenwalt if (!ice_dcb_tc_contig(dcbcfg->etscfg.prio_table)) { 580cfbf1367SPaul Greenwalt tc_map = ICE_DFLT_TRAFFIC_CLASS; 581cfbf1367SPaul Greenwalt ice_dcb_noncontig_cfg(pf); 582cfbf1367SPaul Greenwalt } 583cfbf1367SPaul Greenwalt } else { 584cfbf1367SPaul Greenwalt tc_map = ICE_DFLT_TRAFFIC_CLASS; 585cfbf1367SPaul Greenwalt } 586cfbf1367SPaul Greenwalt 5874015d11eSBrett Creeley ret = ice_vsi_cfg_tc(vsi, tc_map); 588cfbf1367SPaul Greenwalt if (ret) { 5894015d11eSBrett Creeley dev_err(ice_pf_to_dev(pf), "Failed to config TC for VSI index: %d\n", 5904015d11eSBrett Creeley vsi->idx); 591cfbf1367SPaul Greenwalt continue; 592cfbf1367SPaul Greenwalt } 593cfbf1367SPaul Greenwalt 5944015d11eSBrett Creeley ice_vsi_map_rings_to_vectors(vsi); 5954015d11eSBrett Creeley if (vsi->type == ICE_VSI_PF) 5964015d11eSBrett Creeley ice_dcbnl_set_all(vsi); 597cfbf1367SPaul Greenwalt } 598cfbf1367SPaul Greenwalt } 599cfbf1367SPaul Greenwalt 600cfbf1367SPaul Greenwalt /** 60137b6f646SAnirudh Venkataramanan * ice_init_pf_dcb - initialize DCB for a PF 6022f2da36eSAnirudh Venkataramanan * @pf: PF to initialize DCB for 603e223eaecSDave Ertman * @locked: Was function called with RTNL held 60437b6f646SAnirudh Venkataramanan */ 605e223eaecSDave Ertman int ice_init_pf_dcb(struct ice_pf *pf, bool locked) 60637b6f646SAnirudh Venkataramanan { 6074015d11eSBrett Creeley struct device *dev = ice_pf_to_dev(pf); 60837b6f646SAnirudh Venkataramanan struct ice_port_info *port_info; 60937b6f646SAnirudh Venkataramanan struct ice_hw *hw = &pf->hw; 6107b9ffc76SAnirudh Venkataramanan int err; 61137b6f646SAnirudh Venkataramanan 61237b6f646SAnirudh Venkataramanan port_info = hw->port_info; 61337b6f646SAnirudh Venkataramanan 614ea300f41SDave Ertman err = ice_init_dcb(hw, false); 615473ca574SDave Ertman if (err && !port_info->is_sw_lldp) { 6164015d11eSBrett Creeley dev_err(dev, "Error initializing DCB %d\n", err); 617473ca574SDave Ertman goto dcb_init_err; 618473ca574SDave Ertman } 619473ca574SDave Ertman 62019cce2c6SAnirudh Venkataramanan dev_info(dev, "DCB is enabled in the hardware, max number of TCs supported on this port are %d\n", 621a257f188SUsha Ketineni pf->hw.func_caps.common_cap.maxtc); 622473ca574SDave Ertman if (err) { 623241c8cf0SPaul Greenwalt struct ice_vsi *pf_vsi; 624241c8cf0SPaul Greenwalt 625473ca574SDave Ertman /* FW LLDP is disabled, activate SW DCBX/LLDP mode */ 6264015d11eSBrett Creeley dev_info(dev, "FW LLDP is disabled, DCBx/LLDP in SW mode.\n"); 62784a118abSDave Ertman clear_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags); 628cfbf1367SPaul Greenwalt err = ice_dcb_sw_dflt_cfg(pf, true, locked); 6290deab659SAnirudh Venkataramanan if (err) { 63019cce2c6SAnirudh Venkataramanan dev_err(dev, "Failed to set local DCB config %d\n", 63119cce2c6SAnirudh Venkataramanan err); 6320deab659SAnirudh Venkataramanan err = -EIO; 6337b9ffc76SAnirudh Venkataramanan goto dcb_init_err; 6340deab659SAnirudh Venkataramanan } 6350deab659SAnirudh Venkataramanan 636241c8cf0SPaul Greenwalt /* If the FW DCBX engine is not running then Rx LLDP packets 637241c8cf0SPaul Greenwalt * need to be redirected up the stack. 638241c8cf0SPaul Greenwalt */ 639241c8cf0SPaul Greenwalt pf_vsi = ice_get_main_vsi(pf); 640241c8cf0SPaul Greenwalt if (!pf_vsi) { 6414015d11eSBrett Creeley dev_err(dev, "Failed to set local DCB config\n"); 642241c8cf0SPaul Greenwalt err = -EIO; 643241c8cf0SPaul Greenwalt goto dcb_init_err; 644241c8cf0SPaul Greenwalt } 645241c8cf0SPaul Greenwalt 646241c8cf0SPaul Greenwalt ice_cfg_sw_lldp(pf_vsi, false, true); 647241c8cf0SPaul Greenwalt 6480deab659SAnirudh Venkataramanan pf->dcbx_cap = DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE; 6490deab659SAnirudh Venkataramanan return 0; 6500deab659SAnirudh Venkataramanan } 6517b9ffc76SAnirudh Venkataramanan 65284a118abSDave Ertman set_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags); 6531b0c3247SDave Ertman 6547b9ffc76SAnirudh Venkataramanan /* DCBX in FW and LLDP enabled in FW */ 6557b9ffc76SAnirudh Venkataramanan pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED | DCB_CAP_DCBX_VER_IEEE; 6567b9ffc76SAnirudh Venkataramanan 657e223eaecSDave Ertman err = ice_dcb_init_cfg(pf, locked); 6587b9ffc76SAnirudh Venkataramanan if (err) 6597b9ffc76SAnirudh Venkataramanan goto dcb_init_err; 6607b9ffc76SAnirudh Venkataramanan 6617b9ffc76SAnirudh Venkataramanan return err; 6627b9ffc76SAnirudh Venkataramanan 6637b9ffc76SAnirudh Venkataramanan dcb_init_err: 6647b9ffc76SAnirudh Venkataramanan dev_err(dev, "DCB init failed\n"); 6657b9ffc76SAnirudh Venkataramanan return err; 66637b6f646SAnirudh Venkataramanan } 66700cc3f1bSAnirudh Venkataramanan 66800cc3f1bSAnirudh Venkataramanan /** 6694b0fdcebSAnirudh Venkataramanan * ice_update_dcb_stats - Update DCB stats counters 6704b0fdcebSAnirudh Venkataramanan * @pf: PF whose stats needs to be updated 6714b0fdcebSAnirudh Venkataramanan */ 6724b0fdcebSAnirudh Venkataramanan void ice_update_dcb_stats(struct ice_pf *pf) 6734b0fdcebSAnirudh Venkataramanan { 6744b0fdcebSAnirudh Venkataramanan struct ice_hw_port_stats *prev_ps, *cur_ps; 6754b0fdcebSAnirudh Venkataramanan struct ice_hw *hw = &pf->hw; 6769e7a5d17SUsha Ketineni u8 port; 6774b0fdcebSAnirudh Venkataramanan int i; 6784b0fdcebSAnirudh Venkataramanan 6799e7a5d17SUsha Ketineni port = hw->port_info->lport; 6804b0fdcebSAnirudh Venkataramanan prev_ps = &pf->stats_prev; 6814b0fdcebSAnirudh Venkataramanan cur_ps = &pf->stats; 6824b0fdcebSAnirudh Venkataramanan 6834b0fdcebSAnirudh Venkataramanan for (i = 0; i < 8; i++) { 6849e7a5d17SUsha Ketineni ice_stat_update32(hw, GLPRT_PXOFFRXC(port, i), 6854b0fdcebSAnirudh Venkataramanan pf->stat_prev_loaded, 6864b0fdcebSAnirudh Venkataramanan &prev_ps->priority_xoff_rx[i], 6874b0fdcebSAnirudh Venkataramanan &cur_ps->priority_xoff_rx[i]); 6889e7a5d17SUsha Ketineni ice_stat_update32(hw, GLPRT_PXONRXC(port, i), 6894b0fdcebSAnirudh Venkataramanan pf->stat_prev_loaded, 6904b0fdcebSAnirudh Venkataramanan &prev_ps->priority_xon_rx[i], 6914b0fdcebSAnirudh Venkataramanan &cur_ps->priority_xon_rx[i]); 6929e7a5d17SUsha Ketineni ice_stat_update32(hw, GLPRT_PXONTXC(port, i), 6934b0fdcebSAnirudh Venkataramanan pf->stat_prev_loaded, 6944b0fdcebSAnirudh Venkataramanan &prev_ps->priority_xon_tx[i], 6954b0fdcebSAnirudh Venkataramanan &cur_ps->priority_xon_tx[i]); 6969e7a5d17SUsha Ketineni ice_stat_update32(hw, GLPRT_PXOFFTXC(port, i), 6974b0fdcebSAnirudh Venkataramanan pf->stat_prev_loaded, 6984b0fdcebSAnirudh Venkataramanan &prev_ps->priority_xoff_tx[i], 6994b0fdcebSAnirudh Venkataramanan &cur_ps->priority_xoff_tx[i]); 7009e7a5d17SUsha Ketineni ice_stat_update32(hw, GLPRT_RXON2OFFCNT(port, i), 7014b0fdcebSAnirudh Venkataramanan pf->stat_prev_loaded, 7024b0fdcebSAnirudh Venkataramanan &prev_ps->priority_xon_2_xoff[i], 7034b0fdcebSAnirudh Venkataramanan &cur_ps->priority_xon_2_xoff[i]); 7044b0fdcebSAnirudh Venkataramanan } 7054b0fdcebSAnirudh Venkataramanan } 7064b0fdcebSAnirudh Venkataramanan 7074b0fdcebSAnirudh Venkataramanan /** 7085f6aa50eSAnirudh Venkataramanan * ice_tx_prepare_vlan_flags_dcb - prepare VLAN tagging for DCB 7095f6aa50eSAnirudh Venkataramanan * @tx_ring: ring to send buffer on 7105f6aa50eSAnirudh Venkataramanan * @first: pointer to struct ice_tx_buf 7115f6aa50eSAnirudh Venkataramanan */ 7125f6aa50eSAnirudh Venkataramanan int 7135f6aa50eSAnirudh Venkataramanan ice_tx_prepare_vlan_flags_dcb(struct ice_ring *tx_ring, 7145f6aa50eSAnirudh Venkataramanan struct ice_tx_buf *first) 7155f6aa50eSAnirudh Venkataramanan { 7165f6aa50eSAnirudh Venkataramanan struct sk_buff *skb = first->skb; 7175f6aa50eSAnirudh Venkataramanan 7185f6aa50eSAnirudh Venkataramanan if (!test_bit(ICE_FLAG_DCB_ENA, tx_ring->vsi->back->flags)) 7195f6aa50eSAnirudh Venkataramanan return 0; 7205f6aa50eSAnirudh Venkataramanan 7215f6aa50eSAnirudh Venkataramanan /* Insert 802.1p priority into VLAN header */ 7225f6aa50eSAnirudh Venkataramanan if ((first->tx_flags & (ICE_TX_FLAGS_HW_VLAN | ICE_TX_FLAGS_SW_VLAN)) || 7235f6aa50eSAnirudh Venkataramanan skb->priority != TC_PRIO_CONTROL) { 7245f6aa50eSAnirudh Venkataramanan first->tx_flags &= ~ICE_TX_FLAGS_VLAN_PR_M; 7255f6aa50eSAnirudh Venkataramanan /* Mask the lower 3 bits to set the 802.1p priority */ 7265f6aa50eSAnirudh Venkataramanan first->tx_flags |= (skb->priority & 0x7) << 7275f6aa50eSAnirudh Venkataramanan ICE_TX_FLAGS_VLAN_PR_S; 7285f6aa50eSAnirudh Venkataramanan if (first->tx_flags & ICE_TX_FLAGS_SW_VLAN) { 7295f6aa50eSAnirudh Venkataramanan struct vlan_ethhdr *vhdr; 7305f6aa50eSAnirudh Venkataramanan int rc; 7315f6aa50eSAnirudh Venkataramanan 7325f6aa50eSAnirudh Venkataramanan rc = skb_cow_head(skb, 0); 7335f6aa50eSAnirudh Venkataramanan if (rc < 0) 7345f6aa50eSAnirudh Venkataramanan return rc; 7355f6aa50eSAnirudh Venkataramanan vhdr = (struct vlan_ethhdr *)skb->data; 7365f6aa50eSAnirudh Venkataramanan vhdr->h_vlan_TCI = htons(first->tx_flags >> 7375f6aa50eSAnirudh Venkataramanan ICE_TX_FLAGS_VLAN_S); 7385f6aa50eSAnirudh Venkataramanan } else { 7395f6aa50eSAnirudh Venkataramanan first->tx_flags |= ICE_TX_FLAGS_HW_VLAN; 7405f6aa50eSAnirudh Venkataramanan } 7415f6aa50eSAnirudh Venkataramanan } 7425f6aa50eSAnirudh Venkataramanan 7435f6aa50eSAnirudh Venkataramanan return 0; 7445f6aa50eSAnirudh Venkataramanan } 7455f6aa50eSAnirudh Venkataramanan 7465f6aa50eSAnirudh Venkataramanan /** 74700cc3f1bSAnirudh Venkataramanan * ice_dcb_process_lldp_set_mib_change - Process MIB change 74800cc3f1bSAnirudh Venkataramanan * @pf: ptr to ice_pf 74900cc3f1bSAnirudh Venkataramanan * @event: pointer to the admin queue receive event 75000cc3f1bSAnirudh Venkataramanan */ 75100cc3f1bSAnirudh Venkataramanan void 75200cc3f1bSAnirudh Venkataramanan ice_dcb_process_lldp_set_mib_change(struct ice_pf *pf, 75300cc3f1bSAnirudh Venkataramanan struct ice_rq_event_info *event) 75400cc3f1bSAnirudh Venkataramanan { 755a17a5ff6SUsha Ketineni struct ice_aqc_port_ets_elem buf = { 0 }; 7564015d11eSBrett Creeley struct device *dev = ice_pf_to_dev(pf); 757a17a5ff6SUsha Ketineni struct ice_aqc_lldp_get_mib *mib; 758a17a5ff6SUsha Ketineni struct ice_dcbx_cfg tmp_dcbx_cfg; 759a17a5ff6SUsha Ketineni bool need_reconfig = false; 760a17a5ff6SUsha Ketineni struct ice_port_info *pi; 7619d614b64SAnirudh Venkataramanan struct ice_vsi *pf_vsi; 762a17a5ff6SUsha Ketineni u8 type; 763a17a5ff6SUsha Ketineni int ret; 76400cc3f1bSAnirudh Venkataramanan 765a17a5ff6SUsha Ketineni /* Not DCB capable or capability disabled */ 766a17a5ff6SUsha Ketineni if (!(test_bit(ICE_FLAG_DCB_CAPABLE, pf->flags))) 76700cc3f1bSAnirudh Venkataramanan return; 76800cc3f1bSAnirudh Venkataramanan 769a17a5ff6SUsha Ketineni if (pf->dcbx_cap & DCB_CAP_DCBX_HOST) { 7704015d11eSBrett Creeley dev_dbg(dev, "MIB Change Event in HOST mode\n"); 771a17a5ff6SUsha Ketineni return; 77200cc3f1bSAnirudh Venkataramanan } 773a17a5ff6SUsha Ketineni 774a17a5ff6SUsha Ketineni pi = pf->hw.port_info; 775a17a5ff6SUsha Ketineni mib = (struct ice_aqc_lldp_get_mib *)&event->desc.params.raw; 776a17a5ff6SUsha Ketineni /* Ignore if event is not for Nearest Bridge */ 777a17a5ff6SUsha Ketineni type = ((mib->type >> ICE_AQ_LLDP_BRID_TYPE_S) & 778a17a5ff6SUsha Ketineni ICE_AQ_LLDP_BRID_TYPE_M); 7794015d11eSBrett Creeley dev_dbg(dev, "LLDP event MIB bridge type 0x%x\n", type); 780a17a5ff6SUsha Ketineni if (type != ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID) 781a17a5ff6SUsha Ketineni return; 782a17a5ff6SUsha Ketineni 783a17a5ff6SUsha Ketineni /* Check MIB Type and return if event for Remote MIB update */ 784a17a5ff6SUsha Ketineni type = mib->type & ICE_AQ_LLDP_MIB_TYPE_M; 7854015d11eSBrett Creeley dev_dbg(dev, "LLDP event mib type %s\n", type ? "remote" : "local"); 786a17a5ff6SUsha Ketineni if (type == ICE_AQ_LLDP_MIB_REMOTE) { 787a17a5ff6SUsha Ketineni /* Update the remote cached instance and return */ 788a17a5ff6SUsha Ketineni ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_REMOTE, 789a17a5ff6SUsha Ketineni ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, 790a17a5ff6SUsha Ketineni &pi->remote_dcbx_cfg); 791a17a5ff6SUsha Ketineni if (ret) { 7924015d11eSBrett Creeley dev_err(dev, "Failed to get remote DCB config\n"); 793a17a5ff6SUsha Ketineni return; 794a17a5ff6SUsha Ketineni } 795a17a5ff6SUsha Ketineni } 796a17a5ff6SUsha Ketineni 797242b5e06SDave Ertman mutex_lock(&pf->tc_mutex); 798242b5e06SDave Ertman 799a17a5ff6SUsha Ketineni /* store the old configuration */ 800a17a5ff6SUsha Ketineni tmp_dcbx_cfg = pf->hw.port_info->local_dcbx_cfg; 801a17a5ff6SUsha Ketineni 8022f2da36eSAnirudh Venkataramanan /* Reset the old DCBX configuration data */ 803a17a5ff6SUsha Ketineni memset(&pi->local_dcbx_cfg, 0, sizeof(pi->local_dcbx_cfg)); 804a17a5ff6SUsha Ketineni 8052f2da36eSAnirudh Venkataramanan /* Get updated DCBX data from firmware */ 806a17a5ff6SUsha Ketineni ret = ice_get_dcb_cfg(pf->hw.port_info); 807a17a5ff6SUsha Ketineni if (ret) { 8084015d11eSBrett Creeley dev_err(dev, "Failed to get DCB config\n"); 809242b5e06SDave Ertman goto out; 810a17a5ff6SUsha Ketineni } 811a17a5ff6SUsha Ketineni 812a17a5ff6SUsha Ketineni /* No change detected in DCBX configs */ 813a17a5ff6SUsha Ketineni if (!memcmp(&tmp_dcbx_cfg, &pi->local_dcbx_cfg, sizeof(tmp_dcbx_cfg))) { 8144015d11eSBrett Creeley dev_dbg(dev, "No change detected in DCBX configuration.\n"); 815242b5e06SDave Ertman goto out; 816a17a5ff6SUsha Ketineni } 817a17a5ff6SUsha Ketineni 818a17a5ff6SUsha Ketineni need_reconfig = ice_dcb_need_recfg(pf, &tmp_dcbx_cfg, 819a17a5ff6SUsha Ketineni &pi->local_dcbx_cfg); 820b94b013eSDave Ertman ice_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &pi->local_dcbx_cfg); 821a17a5ff6SUsha Ketineni if (!need_reconfig) 822242b5e06SDave Ertman goto out; 823a17a5ff6SUsha Ketineni 824a17a5ff6SUsha Ketineni /* Enable DCB tagging only when more than one TC */ 825a17a5ff6SUsha Ketineni if (ice_dcb_get_num_tc(&pi->local_dcbx_cfg) > 1) { 8264015d11eSBrett Creeley dev_dbg(dev, "DCB tagging enabled (num TC > 1)\n"); 827a17a5ff6SUsha Ketineni set_bit(ICE_FLAG_DCB_ENA, pf->flags); 828a17a5ff6SUsha Ketineni } else { 8294015d11eSBrett Creeley dev_dbg(dev, "DCB tagging disabled (num TC = 1)\n"); 830a17a5ff6SUsha Ketineni clear_bit(ICE_FLAG_DCB_ENA, pf->flags); 831a17a5ff6SUsha Ketineni } 832a17a5ff6SUsha Ketineni 8339d614b64SAnirudh Venkataramanan pf_vsi = ice_get_main_vsi(pf); 8349d614b64SAnirudh Venkataramanan if (!pf_vsi) { 8354015d11eSBrett Creeley dev_dbg(dev, "PF VSI doesn't exist\n"); 836242b5e06SDave Ertman goto out; 8379d614b64SAnirudh Venkataramanan } 8389d614b64SAnirudh Venkataramanan 839a17a5ff6SUsha Ketineni rtnl_lock(); 8409d614b64SAnirudh Venkataramanan ice_dis_vsi(pf_vsi, true); 841a17a5ff6SUsha Ketineni 842a17a5ff6SUsha Ketineni ret = ice_query_port_ets(pf->hw.port_info, &buf, sizeof(buf), NULL); 843a17a5ff6SUsha Ketineni if (ret) { 8444015d11eSBrett Creeley dev_err(dev, "Query Port ETS failed\n"); 845242b5e06SDave Ertman goto unlock_rtnl; 846a17a5ff6SUsha Ketineni } 847a17a5ff6SUsha Ketineni 848a17a5ff6SUsha Ketineni /* changes in configuration update VSI */ 849a17a5ff6SUsha Ketineni ice_pf_dcb_recfg(pf); 850a17a5ff6SUsha Ketineni 8519d614b64SAnirudh Venkataramanan ice_ena_vsi(pf_vsi, true); 852242b5e06SDave Ertman unlock_rtnl: 853a17a5ff6SUsha Ketineni rtnl_unlock(); 854242b5e06SDave Ertman out: 855242b5e06SDave Ertman mutex_unlock(&pf->tc_mutex); 85600cc3f1bSAnirudh Venkataramanan } 857