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 /** 1527b9ffc76SAnirudh Venkataramanan * ice_pf_dcb_cfg - Apply new DCB configuration 1537b9ffc76SAnirudh Venkataramanan * @pf: pointer to the PF struct 1547b9ffc76SAnirudh Venkataramanan * @new_cfg: DCBX config to apply 155e223eaecSDave Ertman * @locked: is the RTNL held 1567b9ffc76SAnirudh Venkataramanan */ 157e223eaecSDave Ertman int ice_pf_dcb_cfg(struct ice_pf *pf, struct ice_dcbx_cfg *new_cfg, bool locked) 1587b9ffc76SAnirudh Venkataramanan { 1597b9ffc76SAnirudh Venkataramanan struct ice_aqc_port_ets_elem buf = { 0 }; 160b94b013eSDave Ertman struct ice_dcbx_cfg *old_cfg, *curr_cfg; 1614015d11eSBrett Creeley struct device *dev = ice_pf_to_dev(pf); 162b94b013eSDave Ertman int ret = ICE_DCB_NO_HW_CHG; 1639d614b64SAnirudh Venkataramanan struct ice_vsi *pf_vsi; 1647b9ffc76SAnirudh Venkataramanan 1657b9ffc76SAnirudh Venkataramanan curr_cfg = &pf->hw.port_info->local_dcbx_cfg; 1667b9ffc76SAnirudh Venkataramanan 167b94b013eSDave Ertman /* FW does not care if change happened */ 168b94b013eSDave Ertman if (!pf->hw.port_info->is_sw_lldp) 169b94b013eSDave Ertman ret = ICE_DCB_HW_CHG_RST; 170b94b013eSDave Ertman 1717b9ffc76SAnirudh Venkataramanan /* Enable DCB tagging only when more than one TC */ 1727b9ffc76SAnirudh Venkataramanan if (ice_dcb_get_num_tc(new_cfg) > 1) { 1734015d11eSBrett Creeley dev_dbg(dev, "DCB tagging enabled (num TC > 1)\n"); 1747b9ffc76SAnirudh Venkataramanan set_bit(ICE_FLAG_DCB_ENA, pf->flags); 1757b9ffc76SAnirudh Venkataramanan } else { 1764015d11eSBrett Creeley dev_dbg(dev, "DCB tagging disabled (num TC = 1)\n"); 1777b9ffc76SAnirudh Venkataramanan clear_bit(ICE_FLAG_DCB_ENA, pf->flags); 1787b9ffc76SAnirudh Venkataramanan } 1797b9ffc76SAnirudh Venkataramanan 1807b9ffc76SAnirudh Venkataramanan if (!memcmp(new_cfg, curr_cfg, sizeof(*new_cfg))) { 1814015d11eSBrett Creeley dev_dbg(dev, "No change in DCB config required\n"); 1827b9ffc76SAnirudh Venkataramanan return ret; 1837b9ffc76SAnirudh Venkataramanan } 1847b9ffc76SAnirudh Venkataramanan 1857b9ffc76SAnirudh Venkataramanan /* Store old config in case FW config fails */ 1869d614b64SAnirudh Venkataramanan old_cfg = kmemdup(curr_cfg, sizeof(*old_cfg), GFP_KERNEL); 1879d614b64SAnirudh Venkataramanan if (!old_cfg) 1889d614b64SAnirudh Venkataramanan return -ENOMEM; 1899d614b64SAnirudh Venkataramanan 1904015d11eSBrett Creeley dev_info(dev, "Commit DCB Configuration to the hardware\n"); 1919d614b64SAnirudh Venkataramanan pf_vsi = ice_get_main_vsi(pf); 1929d614b64SAnirudh Venkataramanan if (!pf_vsi) { 1934015d11eSBrett Creeley dev_dbg(dev, "PF VSI doesn't exist\n"); 1949d614b64SAnirudh Venkataramanan ret = -EINVAL; 1959d614b64SAnirudh Venkataramanan goto free_cfg; 1969d614b64SAnirudh Venkataramanan } 1977b9ffc76SAnirudh Venkataramanan 1987b9ffc76SAnirudh Venkataramanan /* avoid race conditions by holding the lock while disabling and 1997b9ffc76SAnirudh Venkataramanan * re-enabling the VSI 2007b9ffc76SAnirudh Venkataramanan */ 201e223eaecSDave Ertman if (!locked) 2027b9ffc76SAnirudh Venkataramanan rtnl_lock(); 2039d614b64SAnirudh Venkataramanan ice_dis_vsi(pf_vsi, true); 2047b9ffc76SAnirudh Venkataramanan 2057b9ffc76SAnirudh Venkataramanan memcpy(curr_cfg, new_cfg, sizeof(*curr_cfg)); 2067b9ffc76SAnirudh Venkataramanan memcpy(&curr_cfg->etsrec, &curr_cfg->etscfg, sizeof(curr_cfg->etsrec)); 207b94b013eSDave Ertman memcpy(&new_cfg->etsrec, &curr_cfg->etscfg, sizeof(curr_cfg->etsrec)); 2087b9ffc76SAnirudh Venkataramanan 2097b9ffc76SAnirudh Venkataramanan /* Only send new config to HW if we are in SW LLDP mode. Otherwise, 2107b9ffc76SAnirudh Venkataramanan * the new config came from the HW in the first place. 2117b9ffc76SAnirudh Venkataramanan */ 2127b9ffc76SAnirudh Venkataramanan if (pf->hw.port_info->is_sw_lldp) { 2137b9ffc76SAnirudh Venkataramanan ret = ice_set_dcb_cfg(pf->hw.port_info); 2147b9ffc76SAnirudh Venkataramanan if (ret) { 2154015d11eSBrett Creeley dev_err(dev, "Set DCB Config failed\n"); 2167b9ffc76SAnirudh Venkataramanan /* Restore previous settings to local config */ 2177b9ffc76SAnirudh Venkataramanan memcpy(curr_cfg, old_cfg, sizeof(*curr_cfg)); 2187b9ffc76SAnirudh Venkataramanan goto out; 2197b9ffc76SAnirudh Venkataramanan } 2207b9ffc76SAnirudh Venkataramanan } 2217b9ffc76SAnirudh Venkataramanan 2227b9ffc76SAnirudh Venkataramanan ret = ice_query_port_ets(pf->hw.port_info, &buf, sizeof(buf), NULL); 2237b9ffc76SAnirudh Venkataramanan if (ret) { 2244015d11eSBrett Creeley dev_err(dev, "Query Port ETS failed\n"); 2257b9ffc76SAnirudh Venkataramanan goto out; 2267b9ffc76SAnirudh Venkataramanan } 2277b9ffc76SAnirudh Venkataramanan 2287b9ffc76SAnirudh Venkataramanan ice_pf_dcb_recfg(pf); 2297b9ffc76SAnirudh Venkataramanan 2307b9ffc76SAnirudh Venkataramanan out: 2319d614b64SAnirudh Venkataramanan ice_ena_vsi(pf_vsi, true); 232e223eaecSDave Ertman if (!locked) 2337b9ffc76SAnirudh Venkataramanan rtnl_unlock(); 2349d614b64SAnirudh Venkataramanan free_cfg: 2359d614b64SAnirudh Venkataramanan kfree(old_cfg); 2367b9ffc76SAnirudh Venkataramanan return ret; 2377b9ffc76SAnirudh Venkataramanan } 2387b9ffc76SAnirudh Venkataramanan 2397b9ffc76SAnirudh Venkataramanan /** 2407829570eSUsha Ketineni * ice_cfg_etsrec_defaults - Set default ETS recommended DCB config 2417829570eSUsha Ketineni * @pi: port information structure 2427829570eSUsha Ketineni */ 2437829570eSUsha Ketineni static void ice_cfg_etsrec_defaults(struct ice_port_info *pi) 2447829570eSUsha Ketineni { 2457829570eSUsha Ketineni struct ice_dcbx_cfg *dcbcfg = &pi->local_dcbx_cfg; 2467829570eSUsha Ketineni u8 i; 2477829570eSUsha Ketineni 2487829570eSUsha Ketineni /* Ensure ETS recommended DCB configuration is not already set */ 2497829570eSUsha Ketineni if (dcbcfg->etsrec.maxtcs) 2507829570eSUsha Ketineni return; 2517829570eSUsha Ketineni 2527829570eSUsha Ketineni /* In CEE mode, set the default to 1 TC */ 2537829570eSUsha Ketineni dcbcfg->etsrec.maxtcs = 1; 2547829570eSUsha Ketineni for (i = 0; i < ICE_MAX_TRAFFIC_CLASS; i++) { 2557829570eSUsha Ketineni dcbcfg->etsrec.tcbwtable[i] = i ? 0 : 100; 2567829570eSUsha Ketineni dcbcfg->etsrec.tsatable[i] = i ? ICE_IEEE_TSA_STRICT : 2577829570eSUsha Ketineni ICE_IEEE_TSA_ETS; 2587829570eSUsha Ketineni } 2597829570eSUsha Ketineni } 2607829570eSUsha Ketineni 2617829570eSUsha Ketineni /** 2627829570eSUsha Ketineni * ice_dcb_need_recfg - Check if DCB needs reconfig 2637829570eSUsha Ketineni * @pf: board private structure 2647829570eSUsha Ketineni * @old_cfg: current DCB config 2657829570eSUsha Ketineni * @new_cfg: new DCB config 2667829570eSUsha Ketineni */ 2677829570eSUsha Ketineni static bool 2687829570eSUsha Ketineni ice_dcb_need_recfg(struct ice_pf *pf, struct ice_dcbx_cfg *old_cfg, 2697829570eSUsha Ketineni struct ice_dcbx_cfg *new_cfg) 2707829570eSUsha Ketineni { 2714015d11eSBrett Creeley struct device *dev = ice_pf_to_dev(pf); 2727829570eSUsha Ketineni bool need_reconfig = false; 2737829570eSUsha Ketineni 2747829570eSUsha Ketineni /* Check if ETS configuration has changed */ 2757829570eSUsha Ketineni if (memcmp(&new_cfg->etscfg, &old_cfg->etscfg, 2767829570eSUsha Ketineni sizeof(new_cfg->etscfg))) { 2777829570eSUsha Ketineni /* If Priority Table has changed reconfig is needed */ 2787829570eSUsha Ketineni if (memcmp(&new_cfg->etscfg.prio_table, 2797829570eSUsha Ketineni &old_cfg->etscfg.prio_table, 2807829570eSUsha Ketineni sizeof(new_cfg->etscfg.prio_table))) { 2817829570eSUsha Ketineni need_reconfig = true; 2824015d11eSBrett Creeley dev_dbg(dev, "ETS UP2TC changed.\n"); 2837829570eSUsha Ketineni } 2847829570eSUsha Ketineni 2857829570eSUsha Ketineni if (memcmp(&new_cfg->etscfg.tcbwtable, 2867829570eSUsha Ketineni &old_cfg->etscfg.tcbwtable, 2877829570eSUsha Ketineni sizeof(new_cfg->etscfg.tcbwtable))) 2884015d11eSBrett Creeley dev_dbg(dev, "ETS TC BW Table changed.\n"); 2897829570eSUsha Ketineni 2907829570eSUsha Ketineni if (memcmp(&new_cfg->etscfg.tsatable, 2917829570eSUsha Ketineni &old_cfg->etscfg.tsatable, 2927829570eSUsha Ketineni sizeof(new_cfg->etscfg.tsatable))) 2934015d11eSBrett Creeley dev_dbg(dev, "ETS TSA Table changed.\n"); 2947829570eSUsha Ketineni } 2957829570eSUsha Ketineni 2967829570eSUsha Ketineni /* Check if PFC configuration has changed */ 2977829570eSUsha Ketineni if (memcmp(&new_cfg->pfc, &old_cfg->pfc, sizeof(new_cfg->pfc))) { 2987829570eSUsha Ketineni need_reconfig = true; 2994015d11eSBrett Creeley dev_dbg(dev, "PFC config change detected.\n"); 3007829570eSUsha Ketineni } 3017829570eSUsha Ketineni 3027829570eSUsha Ketineni /* Check if APP Table has changed */ 3037829570eSUsha Ketineni if (memcmp(&new_cfg->app, &old_cfg->app, sizeof(new_cfg->app))) { 3047829570eSUsha Ketineni need_reconfig = true; 3054015d11eSBrett Creeley dev_dbg(dev, "APP Table change detected.\n"); 3067829570eSUsha Ketineni } 3077829570eSUsha Ketineni 3084015d11eSBrett Creeley dev_dbg(dev, "dcb need_reconfig=%d\n", need_reconfig); 3097829570eSUsha Ketineni return need_reconfig; 3107829570eSUsha Ketineni } 3117829570eSUsha Ketineni 3127829570eSUsha Ketineni /** 313b832c2f6SAnirudh Venkataramanan * ice_dcb_rebuild - rebuild DCB post reset 314b832c2f6SAnirudh Venkataramanan * @pf: physical function instance 315b832c2f6SAnirudh Venkataramanan */ 316b832c2f6SAnirudh Venkataramanan void ice_dcb_rebuild(struct ice_pf *pf) 317b832c2f6SAnirudh Venkataramanan { 318b832c2f6SAnirudh Venkataramanan struct ice_aqc_port_ets_elem buf = { 0 }; 3194015d11eSBrett Creeley struct device *dev = ice_pf_to_dev(pf); 320242b5e06SDave Ertman struct ice_dcbx_cfg *err_cfg; 321b832c2f6SAnirudh Venkataramanan enum ice_status ret; 322b832c2f6SAnirudh Venkataramanan 323b832c2f6SAnirudh Venkataramanan ret = ice_query_port_ets(pf->hw.port_info, &buf, sizeof(buf), NULL); 324b832c2f6SAnirudh Venkataramanan if (ret) { 3254015d11eSBrett Creeley dev_err(dev, "Query Port ETS failed\n"); 326b832c2f6SAnirudh Venkataramanan goto dcb_error; 327b832c2f6SAnirudh Venkataramanan } 328b832c2f6SAnirudh Venkataramanan 329b832c2f6SAnirudh Venkataramanan /* If DCB was not enabled previously, we are done */ 330b832c2f6SAnirudh Venkataramanan if (!test_bit(ICE_FLAG_DCB_ENA, pf->flags)) 331b832c2f6SAnirudh Venkataramanan return; 332b832c2f6SAnirudh Venkataramanan 333242b5e06SDave Ertman mutex_lock(&pf->tc_mutex); 3347829570eSUsha Ketineni 335242b5e06SDave Ertman if (!pf->hw.port_info->is_sw_lldp) 3367829570eSUsha Ketineni ice_cfg_etsrec_defaults(pf->hw.port_info); 337242b5e06SDave Ertman 338b832c2f6SAnirudh Venkataramanan ret = ice_set_dcb_cfg(pf->hw.port_info); 339b832c2f6SAnirudh Venkataramanan if (ret) { 340242b5e06SDave Ertman dev_err(dev, "Failed to set DCB config in rebuild\n"); 341b832c2f6SAnirudh Venkataramanan goto dcb_error; 342b832c2f6SAnirudh Venkataramanan } 343b832c2f6SAnirudh Venkataramanan 344242b5e06SDave Ertman if (!pf->hw.port_info->is_sw_lldp) { 345242b5e06SDave Ertman ret = ice_cfg_lldp_mib_change(&pf->hw, true); 346242b5e06SDave Ertman if (ret && !pf->hw.port_info->is_sw_lldp) { 347242b5e06SDave Ertman dev_err(dev, "Failed to register for MIB changes\n"); 348b832c2f6SAnirudh Venkataramanan goto dcb_error; 349b832c2f6SAnirudh Venkataramanan } 350b832c2f6SAnirudh Venkataramanan } 351242b5e06SDave Ertman 3524015d11eSBrett Creeley dev_info(dev, "DCB restored after reset\n"); 353b832c2f6SAnirudh Venkataramanan ret = ice_query_port_ets(pf->hw.port_info, &buf, sizeof(buf), NULL); 354b832c2f6SAnirudh Venkataramanan if (ret) { 3554015d11eSBrett Creeley dev_err(dev, "Query Port ETS failed\n"); 356b832c2f6SAnirudh Venkataramanan goto dcb_error; 357b832c2f6SAnirudh Venkataramanan } 358b832c2f6SAnirudh Venkataramanan 359242b5e06SDave Ertman mutex_unlock(&pf->tc_mutex); 360242b5e06SDave Ertman 361b832c2f6SAnirudh Venkataramanan return; 362b832c2f6SAnirudh Venkataramanan 363b832c2f6SAnirudh Venkataramanan dcb_error: 3644015d11eSBrett Creeley dev_err(dev, "Disabling DCB until new settings occur\n"); 365242b5e06SDave Ertman err_cfg = kzalloc(sizeof(*err_cfg), GFP_KERNEL); 366242b5e06SDave Ertman if (!err_cfg) { 367242b5e06SDave Ertman mutex_unlock(&pf->tc_mutex); 3689efe35d0STony Nguyen return; 369242b5e06SDave Ertman } 3709efe35d0STony Nguyen 371242b5e06SDave Ertman err_cfg->etscfg.willing = true; 372242b5e06SDave Ertman err_cfg->etscfg.tcbwtable[0] = ICE_TC_MAX_BW; 373242b5e06SDave Ertman err_cfg->etscfg.tsatable[0] = ICE_IEEE_TSA_ETS; 374242b5e06SDave Ertman memcpy(&err_cfg->etsrec, &err_cfg->etscfg, sizeof(err_cfg->etsrec)); 375ac614b13SBruce Allan /* Coverity warns the return code of ice_pf_dcb_cfg() is not checked 376ac614b13SBruce Allan * here as is done for other calls to that function. That check is 377ac614b13SBruce Allan * not necessary since this is in this function's error cleanup path. 378ac614b13SBruce Allan * Suppress the Coverity warning with the following comment... 379ac614b13SBruce Allan */ 380ac614b13SBruce Allan /* coverity[check_return] */ 381242b5e06SDave Ertman ice_pf_dcb_cfg(pf, err_cfg, false); 382242b5e06SDave Ertman kfree(err_cfg); 383242b5e06SDave Ertman 384242b5e06SDave Ertman mutex_unlock(&pf->tc_mutex); 385b832c2f6SAnirudh Venkataramanan } 386b832c2f6SAnirudh Venkataramanan 387b832c2f6SAnirudh Venkataramanan /** 3887b9ffc76SAnirudh Venkataramanan * ice_dcb_init_cfg - set the initial DCB config in SW 3892f2da36eSAnirudh Venkataramanan * @pf: PF to apply config to 390e223eaecSDave Ertman * @locked: Is the RTNL held 3917b9ffc76SAnirudh Venkataramanan */ 392e223eaecSDave Ertman static int ice_dcb_init_cfg(struct ice_pf *pf, bool locked) 3937b9ffc76SAnirudh Venkataramanan { 3947b9ffc76SAnirudh Venkataramanan struct ice_dcbx_cfg *newcfg; 3957b9ffc76SAnirudh Venkataramanan struct ice_port_info *pi; 3967b9ffc76SAnirudh Venkataramanan int ret = 0; 3977b9ffc76SAnirudh Venkataramanan 3987b9ffc76SAnirudh Venkataramanan pi = pf->hw.port_info; 3999efe35d0STony Nguyen newcfg = kmemdup(&pi->local_dcbx_cfg, sizeof(*newcfg), GFP_KERNEL); 4007b9ffc76SAnirudh Venkataramanan if (!newcfg) 4017b9ffc76SAnirudh Venkataramanan return -ENOMEM; 4027b9ffc76SAnirudh Venkataramanan 4037b9ffc76SAnirudh Venkataramanan memset(&pi->local_dcbx_cfg, 0, sizeof(*newcfg)); 4047b9ffc76SAnirudh Venkataramanan 4054015d11eSBrett Creeley dev_info(ice_pf_to_dev(pf), "Configuring initial DCB values\n"); 406e223eaecSDave Ertman if (ice_pf_dcb_cfg(pf, newcfg, locked)) 4077b9ffc76SAnirudh Venkataramanan ret = -EINVAL; 4087b9ffc76SAnirudh Venkataramanan 4099efe35d0STony Nguyen kfree(newcfg); 4107b9ffc76SAnirudh Venkataramanan 4117b9ffc76SAnirudh Venkataramanan return ret; 4127b9ffc76SAnirudh Venkataramanan } 4137b9ffc76SAnirudh Venkataramanan 4147b9ffc76SAnirudh Venkataramanan /** 4150deab659SAnirudh Venkataramanan * ice_dcb_sw_default_config - Apply a default DCB config 4162f2da36eSAnirudh Venkataramanan * @pf: PF to apply config to 417cfbf1367SPaul Greenwalt * @ets_willing: configure ets willing 418e223eaecSDave Ertman * @locked: was this function called with RTNL held 4190deab659SAnirudh Venkataramanan */ 420cfbf1367SPaul Greenwalt static int ice_dcb_sw_dflt_cfg(struct ice_pf *pf, bool ets_willing, bool locked) 4210deab659SAnirudh Venkataramanan { 4220deab659SAnirudh Venkataramanan struct ice_aqc_port_ets_elem buf = { 0 }; 4230deab659SAnirudh Venkataramanan struct ice_dcbx_cfg *dcbcfg; 4240deab659SAnirudh Venkataramanan struct ice_port_info *pi; 4250deab659SAnirudh Venkataramanan struct ice_hw *hw; 4260deab659SAnirudh Venkataramanan int ret; 4270deab659SAnirudh Venkataramanan 4280deab659SAnirudh Venkataramanan hw = &pf->hw; 4290deab659SAnirudh Venkataramanan pi = hw->port_info; 4309efe35d0STony Nguyen dcbcfg = kzalloc(sizeof(*dcbcfg), GFP_KERNEL); 4319efe35d0STony Nguyen if (!dcbcfg) 4329efe35d0STony Nguyen return -ENOMEM; 4330deab659SAnirudh Venkataramanan 4340deab659SAnirudh Venkataramanan memset(&pi->local_dcbx_cfg, 0, sizeof(*dcbcfg)); 4350deab659SAnirudh Venkataramanan 436cfbf1367SPaul Greenwalt dcbcfg->etscfg.willing = ets_willing ? 1 : 0; 437a257f188SUsha Ketineni dcbcfg->etscfg.maxtcs = hw->func_caps.common_cap.maxtc; 4380deab659SAnirudh Venkataramanan dcbcfg->etscfg.tcbwtable[0] = 100; 4390deab659SAnirudh Venkataramanan dcbcfg->etscfg.tsatable[0] = ICE_IEEE_TSA_ETS; 4400deab659SAnirudh Venkataramanan 4410deab659SAnirudh Venkataramanan memcpy(&dcbcfg->etsrec, &dcbcfg->etscfg, 4420deab659SAnirudh Venkataramanan sizeof(dcbcfg->etsrec)); 4430deab659SAnirudh Venkataramanan dcbcfg->etsrec.willing = 0; 4440deab659SAnirudh Venkataramanan 4450deab659SAnirudh Venkataramanan dcbcfg->pfc.willing = 1; 446a257f188SUsha Ketineni dcbcfg->pfc.pfccap = hw->func_caps.common_cap.maxtc; 4470deab659SAnirudh Venkataramanan 4480deab659SAnirudh Venkataramanan dcbcfg->numapps = 1; 4490deab659SAnirudh Venkataramanan dcbcfg->app[0].selector = ICE_APP_SEL_ETHTYPE; 4500deab659SAnirudh Venkataramanan dcbcfg->app[0].priority = 3; 4510deab659SAnirudh Venkataramanan dcbcfg->app[0].prot_id = ICE_APP_PROT_ID_FCOE; 4520deab659SAnirudh Venkataramanan 453e223eaecSDave Ertman ret = ice_pf_dcb_cfg(pf, dcbcfg, locked); 4549efe35d0STony Nguyen kfree(dcbcfg); 4550deab659SAnirudh Venkataramanan if (ret) 4560deab659SAnirudh Venkataramanan return ret; 4570deab659SAnirudh Venkataramanan 4580deab659SAnirudh Venkataramanan return ice_query_port_ets(pi, &buf, sizeof(buf), NULL); 4590deab659SAnirudh Venkataramanan } 4600deab659SAnirudh Venkataramanan 4610deab659SAnirudh Venkataramanan /** 462cfbf1367SPaul Greenwalt * ice_dcb_tc_contig - Check that TCs are contiguous 463cfbf1367SPaul Greenwalt * @prio_table: pointer to priority table 464cfbf1367SPaul Greenwalt * 465cfbf1367SPaul Greenwalt * Check if TCs begin with TC0 and are contiguous 466cfbf1367SPaul Greenwalt */ 467cfbf1367SPaul Greenwalt static bool ice_dcb_tc_contig(u8 *prio_table) 468cfbf1367SPaul Greenwalt { 469cfbf1367SPaul Greenwalt u8 max_tc = 0; 470cfbf1367SPaul Greenwalt int i; 471cfbf1367SPaul Greenwalt 472cfbf1367SPaul Greenwalt for (i = 0; i < CEE_DCBX_MAX_PRIO; i++) { 473cfbf1367SPaul Greenwalt u8 cur_tc = prio_table[i]; 474cfbf1367SPaul Greenwalt 475cfbf1367SPaul Greenwalt if (cur_tc > max_tc) 476cfbf1367SPaul Greenwalt return false; 477cfbf1367SPaul Greenwalt else if (cur_tc == max_tc) 478cfbf1367SPaul Greenwalt max_tc++; 479cfbf1367SPaul Greenwalt } 480cfbf1367SPaul Greenwalt 481cfbf1367SPaul Greenwalt return true; 482cfbf1367SPaul Greenwalt } 483cfbf1367SPaul Greenwalt 484cfbf1367SPaul Greenwalt /** 485cfbf1367SPaul Greenwalt * ice_dcb_noncontig_cfg - Configure DCB for non-contiguous TCs 486cfbf1367SPaul Greenwalt * @pf: pointer to the PF struct 487cfbf1367SPaul Greenwalt * 488cfbf1367SPaul Greenwalt * If non-contiguous TCs, then configure SW DCB with TC0 and ETS non-willing 489cfbf1367SPaul Greenwalt */ 490cfbf1367SPaul Greenwalt static int ice_dcb_noncontig_cfg(struct ice_pf *pf) 491cfbf1367SPaul Greenwalt { 492cfbf1367SPaul Greenwalt struct ice_dcbx_cfg *dcbcfg = &pf->hw.port_info->local_dcbx_cfg; 4934015d11eSBrett Creeley struct device *dev = ice_pf_to_dev(pf); 494cfbf1367SPaul Greenwalt int ret; 495cfbf1367SPaul Greenwalt 496cfbf1367SPaul Greenwalt /* Configure SW DCB default with ETS non-willing */ 497cfbf1367SPaul Greenwalt ret = ice_dcb_sw_dflt_cfg(pf, false, true); 498cfbf1367SPaul Greenwalt if (ret) { 4994015d11eSBrett Creeley dev_err(dev, "Failed to set local DCB config %d\n", ret); 500cfbf1367SPaul Greenwalt return ret; 501cfbf1367SPaul Greenwalt } 502cfbf1367SPaul Greenwalt 503cfbf1367SPaul Greenwalt /* Reconfigure with ETS willing so that FW will send LLDP MIB event */ 504cfbf1367SPaul Greenwalt dcbcfg->etscfg.willing = 1; 505cfbf1367SPaul Greenwalt ret = ice_set_dcb_cfg(pf->hw.port_info); 506cfbf1367SPaul Greenwalt if (ret) 5074015d11eSBrett Creeley dev_err(dev, "Failed to set DCB to unwilling\n"); 508cfbf1367SPaul Greenwalt 509cfbf1367SPaul Greenwalt return ret; 510cfbf1367SPaul Greenwalt } 511cfbf1367SPaul Greenwalt 512cfbf1367SPaul Greenwalt /** 513cfbf1367SPaul Greenwalt * ice_pf_dcb_recfg - Reconfigure all VEBs and VSIs 514cfbf1367SPaul Greenwalt * @pf: pointer to the PF struct 515cfbf1367SPaul Greenwalt * 516cfbf1367SPaul Greenwalt * Assumed caller has already disabled all VSIs before 517cfbf1367SPaul Greenwalt * calling this function. Reconfiguring DCB based on 518cfbf1367SPaul Greenwalt * local_dcbx_cfg. 519cfbf1367SPaul Greenwalt */ 52087324e74SHenry Tieman void ice_pf_dcb_recfg(struct ice_pf *pf) 521cfbf1367SPaul Greenwalt { 522cfbf1367SPaul Greenwalt struct ice_dcbx_cfg *dcbcfg = &pf->hw.port_info->local_dcbx_cfg; 523cfbf1367SPaul Greenwalt u8 tc_map = 0; 524cfbf1367SPaul Greenwalt int v, ret; 525cfbf1367SPaul Greenwalt 526cfbf1367SPaul Greenwalt /* Update each VSI */ 527cfbf1367SPaul Greenwalt ice_for_each_vsi(pf, v) { 5284015d11eSBrett Creeley struct ice_vsi *vsi = pf->vsi[v]; 5294015d11eSBrett Creeley 5304015d11eSBrett Creeley if (!vsi) 531cfbf1367SPaul Greenwalt continue; 532cfbf1367SPaul Greenwalt 5334015d11eSBrett Creeley if (vsi->type == ICE_VSI_PF) { 534cfbf1367SPaul Greenwalt tc_map = ice_dcb_get_ena_tc(dcbcfg); 535cfbf1367SPaul Greenwalt 536cfbf1367SPaul Greenwalt /* If DCBX request non-contiguous TC, then configure 537cfbf1367SPaul Greenwalt * default TC 538cfbf1367SPaul Greenwalt */ 539cfbf1367SPaul Greenwalt if (!ice_dcb_tc_contig(dcbcfg->etscfg.prio_table)) { 540cfbf1367SPaul Greenwalt tc_map = ICE_DFLT_TRAFFIC_CLASS; 541cfbf1367SPaul Greenwalt ice_dcb_noncontig_cfg(pf); 542cfbf1367SPaul Greenwalt } 543cfbf1367SPaul Greenwalt } else { 544cfbf1367SPaul Greenwalt tc_map = ICE_DFLT_TRAFFIC_CLASS; 545cfbf1367SPaul Greenwalt } 546cfbf1367SPaul Greenwalt 5474015d11eSBrett Creeley ret = ice_vsi_cfg_tc(vsi, tc_map); 548cfbf1367SPaul Greenwalt if (ret) { 5494015d11eSBrett Creeley dev_err(ice_pf_to_dev(pf), "Failed to config TC for VSI index: %d\n", 5504015d11eSBrett Creeley vsi->idx); 551cfbf1367SPaul Greenwalt continue; 552cfbf1367SPaul Greenwalt } 553cfbf1367SPaul Greenwalt 5544015d11eSBrett Creeley ice_vsi_map_rings_to_vectors(vsi); 5554015d11eSBrett Creeley if (vsi->type == ICE_VSI_PF) 5564015d11eSBrett Creeley ice_dcbnl_set_all(vsi); 557cfbf1367SPaul Greenwalt } 558cfbf1367SPaul Greenwalt } 559cfbf1367SPaul Greenwalt 560cfbf1367SPaul Greenwalt /** 56137b6f646SAnirudh Venkataramanan * ice_init_pf_dcb - initialize DCB for a PF 5622f2da36eSAnirudh Venkataramanan * @pf: PF to initialize DCB for 563e223eaecSDave Ertman * @locked: Was function called with RTNL held 56437b6f646SAnirudh Venkataramanan */ 565e223eaecSDave Ertman int ice_init_pf_dcb(struct ice_pf *pf, bool locked) 56637b6f646SAnirudh Venkataramanan { 5674015d11eSBrett Creeley struct device *dev = ice_pf_to_dev(pf); 56837b6f646SAnirudh Venkataramanan struct ice_port_info *port_info; 56937b6f646SAnirudh Venkataramanan struct ice_hw *hw = &pf->hw; 5707b9ffc76SAnirudh Venkataramanan int err; 57137b6f646SAnirudh Venkataramanan 57237b6f646SAnirudh Venkataramanan port_info = hw->port_info; 57337b6f646SAnirudh Venkataramanan 574ea300f41SDave Ertman err = ice_init_dcb(hw, false); 575473ca574SDave Ertman if (err && !port_info->is_sw_lldp) { 5764015d11eSBrett Creeley dev_err(dev, "Error initializing DCB %d\n", err); 577473ca574SDave Ertman goto dcb_init_err; 578473ca574SDave Ertman } 579473ca574SDave Ertman 5804015d11eSBrett Creeley dev_info(dev, 581a257f188SUsha Ketineni "DCB is enabled in the hardware, max number of TCs supported on this port are %d\n", 582a257f188SUsha Ketineni pf->hw.func_caps.common_cap.maxtc); 583473ca574SDave Ertman if (err) { 584241c8cf0SPaul Greenwalt struct ice_vsi *pf_vsi; 585241c8cf0SPaul Greenwalt 586473ca574SDave Ertman /* FW LLDP is disabled, activate SW DCBX/LLDP mode */ 5874015d11eSBrett Creeley dev_info(dev, "FW LLDP is disabled, DCBx/LLDP in SW mode.\n"); 58884a118abSDave Ertman clear_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags); 589cfbf1367SPaul Greenwalt err = ice_dcb_sw_dflt_cfg(pf, true, locked); 5900deab659SAnirudh Venkataramanan if (err) { 5914015d11eSBrett Creeley dev_err(dev, 5920deab659SAnirudh Venkataramanan "Failed to set local DCB config %d\n", err); 5930deab659SAnirudh Venkataramanan err = -EIO; 5947b9ffc76SAnirudh Venkataramanan goto dcb_init_err; 5950deab659SAnirudh Venkataramanan } 5960deab659SAnirudh Venkataramanan 597241c8cf0SPaul Greenwalt /* If the FW DCBX engine is not running then Rx LLDP packets 598241c8cf0SPaul Greenwalt * need to be redirected up the stack. 599241c8cf0SPaul Greenwalt */ 600241c8cf0SPaul Greenwalt pf_vsi = ice_get_main_vsi(pf); 601241c8cf0SPaul Greenwalt if (!pf_vsi) { 6024015d11eSBrett Creeley dev_err(dev, "Failed to set local DCB config\n"); 603241c8cf0SPaul Greenwalt err = -EIO; 604241c8cf0SPaul Greenwalt goto dcb_init_err; 605241c8cf0SPaul Greenwalt } 606241c8cf0SPaul Greenwalt 607241c8cf0SPaul Greenwalt ice_cfg_sw_lldp(pf_vsi, false, true); 608241c8cf0SPaul Greenwalt 6090deab659SAnirudh Venkataramanan pf->dcbx_cap = DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE; 6100deab659SAnirudh Venkataramanan return 0; 6110deab659SAnirudh Venkataramanan } 6127b9ffc76SAnirudh Venkataramanan 61384a118abSDave Ertman set_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags); 6141b0c3247SDave Ertman 6157b9ffc76SAnirudh Venkataramanan /* DCBX in FW and LLDP enabled in FW */ 6167b9ffc76SAnirudh Venkataramanan pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED | DCB_CAP_DCBX_VER_IEEE; 6177b9ffc76SAnirudh Venkataramanan 618e223eaecSDave Ertman err = ice_dcb_init_cfg(pf, locked); 6197b9ffc76SAnirudh Venkataramanan if (err) 6207b9ffc76SAnirudh Venkataramanan goto dcb_init_err; 6217b9ffc76SAnirudh Venkataramanan 6227b9ffc76SAnirudh Venkataramanan return err; 6237b9ffc76SAnirudh Venkataramanan 6247b9ffc76SAnirudh Venkataramanan dcb_init_err: 6257b9ffc76SAnirudh Venkataramanan dev_err(dev, "DCB init failed\n"); 6267b9ffc76SAnirudh Venkataramanan return err; 62737b6f646SAnirudh Venkataramanan } 62800cc3f1bSAnirudh Venkataramanan 62900cc3f1bSAnirudh Venkataramanan /** 6304b0fdcebSAnirudh Venkataramanan * ice_update_dcb_stats - Update DCB stats counters 6314b0fdcebSAnirudh Venkataramanan * @pf: PF whose stats needs to be updated 6324b0fdcebSAnirudh Venkataramanan */ 6334b0fdcebSAnirudh Venkataramanan void ice_update_dcb_stats(struct ice_pf *pf) 6344b0fdcebSAnirudh Venkataramanan { 6354b0fdcebSAnirudh Venkataramanan struct ice_hw_port_stats *prev_ps, *cur_ps; 6364b0fdcebSAnirudh Venkataramanan struct ice_hw *hw = &pf->hw; 6379e7a5d17SUsha Ketineni u8 port; 6384b0fdcebSAnirudh Venkataramanan int i; 6394b0fdcebSAnirudh Venkataramanan 6409e7a5d17SUsha Ketineni port = hw->port_info->lport; 6414b0fdcebSAnirudh Venkataramanan prev_ps = &pf->stats_prev; 6424b0fdcebSAnirudh Venkataramanan cur_ps = &pf->stats; 6434b0fdcebSAnirudh Venkataramanan 6444b0fdcebSAnirudh Venkataramanan for (i = 0; i < 8; i++) { 6459e7a5d17SUsha Ketineni ice_stat_update32(hw, GLPRT_PXOFFRXC(port, i), 6464b0fdcebSAnirudh Venkataramanan pf->stat_prev_loaded, 6474b0fdcebSAnirudh Venkataramanan &prev_ps->priority_xoff_rx[i], 6484b0fdcebSAnirudh Venkataramanan &cur_ps->priority_xoff_rx[i]); 6499e7a5d17SUsha Ketineni ice_stat_update32(hw, GLPRT_PXONRXC(port, i), 6504b0fdcebSAnirudh Venkataramanan pf->stat_prev_loaded, 6514b0fdcebSAnirudh Venkataramanan &prev_ps->priority_xon_rx[i], 6524b0fdcebSAnirudh Venkataramanan &cur_ps->priority_xon_rx[i]); 6539e7a5d17SUsha Ketineni ice_stat_update32(hw, GLPRT_PXONTXC(port, i), 6544b0fdcebSAnirudh Venkataramanan pf->stat_prev_loaded, 6554b0fdcebSAnirudh Venkataramanan &prev_ps->priority_xon_tx[i], 6564b0fdcebSAnirudh Venkataramanan &cur_ps->priority_xon_tx[i]); 6579e7a5d17SUsha Ketineni ice_stat_update32(hw, GLPRT_PXOFFTXC(port, i), 6584b0fdcebSAnirudh Venkataramanan pf->stat_prev_loaded, 6594b0fdcebSAnirudh Venkataramanan &prev_ps->priority_xoff_tx[i], 6604b0fdcebSAnirudh Venkataramanan &cur_ps->priority_xoff_tx[i]); 6619e7a5d17SUsha Ketineni ice_stat_update32(hw, GLPRT_RXON2OFFCNT(port, i), 6624b0fdcebSAnirudh Venkataramanan pf->stat_prev_loaded, 6634b0fdcebSAnirudh Venkataramanan &prev_ps->priority_xon_2_xoff[i], 6644b0fdcebSAnirudh Venkataramanan &cur_ps->priority_xon_2_xoff[i]); 6654b0fdcebSAnirudh Venkataramanan } 6664b0fdcebSAnirudh Venkataramanan } 6674b0fdcebSAnirudh Venkataramanan 6684b0fdcebSAnirudh Venkataramanan /** 6695f6aa50eSAnirudh Venkataramanan * ice_tx_prepare_vlan_flags_dcb - prepare VLAN tagging for DCB 6705f6aa50eSAnirudh Venkataramanan * @tx_ring: ring to send buffer on 6715f6aa50eSAnirudh Venkataramanan * @first: pointer to struct ice_tx_buf 6725f6aa50eSAnirudh Venkataramanan */ 6735f6aa50eSAnirudh Venkataramanan int 6745f6aa50eSAnirudh Venkataramanan ice_tx_prepare_vlan_flags_dcb(struct ice_ring *tx_ring, 6755f6aa50eSAnirudh Venkataramanan struct ice_tx_buf *first) 6765f6aa50eSAnirudh Venkataramanan { 6775f6aa50eSAnirudh Venkataramanan struct sk_buff *skb = first->skb; 6785f6aa50eSAnirudh Venkataramanan 6795f6aa50eSAnirudh Venkataramanan if (!test_bit(ICE_FLAG_DCB_ENA, tx_ring->vsi->back->flags)) 6805f6aa50eSAnirudh Venkataramanan return 0; 6815f6aa50eSAnirudh Venkataramanan 6825f6aa50eSAnirudh Venkataramanan /* Insert 802.1p priority into VLAN header */ 6835f6aa50eSAnirudh Venkataramanan if ((first->tx_flags & (ICE_TX_FLAGS_HW_VLAN | ICE_TX_FLAGS_SW_VLAN)) || 6845f6aa50eSAnirudh Venkataramanan skb->priority != TC_PRIO_CONTROL) { 6855f6aa50eSAnirudh Venkataramanan first->tx_flags &= ~ICE_TX_FLAGS_VLAN_PR_M; 6865f6aa50eSAnirudh Venkataramanan /* Mask the lower 3 bits to set the 802.1p priority */ 6875f6aa50eSAnirudh Venkataramanan first->tx_flags |= (skb->priority & 0x7) << 6885f6aa50eSAnirudh Venkataramanan ICE_TX_FLAGS_VLAN_PR_S; 6895f6aa50eSAnirudh Venkataramanan if (first->tx_flags & ICE_TX_FLAGS_SW_VLAN) { 6905f6aa50eSAnirudh Venkataramanan struct vlan_ethhdr *vhdr; 6915f6aa50eSAnirudh Venkataramanan int rc; 6925f6aa50eSAnirudh Venkataramanan 6935f6aa50eSAnirudh Venkataramanan rc = skb_cow_head(skb, 0); 6945f6aa50eSAnirudh Venkataramanan if (rc < 0) 6955f6aa50eSAnirudh Venkataramanan return rc; 6965f6aa50eSAnirudh Venkataramanan vhdr = (struct vlan_ethhdr *)skb->data; 6975f6aa50eSAnirudh Venkataramanan vhdr->h_vlan_TCI = htons(first->tx_flags >> 6985f6aa50eSAnirudh Venkataramanan ICE_TX_FLAGS_VLAN_S); 6995f6aa50eSAnirudh Venkataramanan } else { 7005f6aa50eSAnirudh Venkataramanan first->tx_flags |= ICE_TX_FLAGS_HW_VLAN; 7015f6aa50eSAnirudh Venkataramanan } 7025f6aa50eSAnirudh Venkataramanan } 7035f6aa50eSAnirudh Venkataramanan 7045f6aa50eSAnirudh Venkataramanan return 0; 7055f6aa50eSAnirudh Venkataramanan } 7065f6aa50eSAnirudh Venkataramanan 7075f6aa50eSAnirudh Venkataramanan /** 70800cc3f1bSAnirudh Venkataramanan * ice_dcb_process_lldp_set_mib_change - Process MIB change 70900cc3f1bSAnirudh Venkataramanan * @pf: ptr to ice_pf 71000cc3f1bSAnirudh Venkataramanan * @event: pointer to the admin queue receive event 71100cc3f1bSAnirudh Venkataramanan */ 71200cc3f1bSAnirudh Venkataramanan void 71300cc3f1bSAnirudh Venkataramanan ice_dcb_process_lldp_set_mib_change(struct ice_pf *pf, 71400cc3f1bSAnirudh Venkataramanan struct ice_rq_event_info *event) 71500cc3f1bSAnirudh Venkataramanan { 716a17a5ff6SUsha Ketineni struct ice_aqc_port_ets_elem buf = { 0 }; 7174015d11eSBrett Creeley struct device *dev = ice_pf_to_dev(pf); 718a17a5ff6SUsha Ketineni struct ice_aqc_lldp_get_mib *mib; 719a17a5ff6SUsha Ketineni struct ice_dcbx_cfg tmp_dcbx_cfg; 720a17a5ff6SUsha Ketineni bool need_reconfig = false; 721a17a5ff6SUsha Ketineni struct ice_port_info *pi; 7229d614b64SAnirudh Venkataramanan struct ice_vsi *pf_vsi; 723a17a5ff6SUsha Ketineni u8 type; 724a17a5ff6SUsha Ketineni int ret; 72500cc3f1bSAnirudh Venkataramanan 726a17a5ff6SUsha Ketineni /* Not DCB capable or capability disabled */ 727a17a5ff6SUsha Ketineni if (!(test_bit(ICE_FLAG_DCB_CAPABLE, pf->flags))) 72800cc3f1bSAnirudh Venkataramanan return; 72900cc3f1bSAnirudh Venkataramanan 730a17a5ff6SUsha Ketineni if (pf->dcbx_cap & DCB_CAP_DCBX_HOST) { 7314015d11eSBrett Creeley dev_dbg(dev, "MIB Change Event in HOST mode\n"); 732a17a5ff6SUsha Ketineni return; 73300cc3f1bSAnirudh Venkataramanan } 734a17a5ff6SUsha Ketineni 735a17a5ff6SUsha Ketineni pi = pf->hw.port_info; 736a17a5ff6SUsha Ketineni mib = (struct ice_aqc_lldp_get_mib *)&event->desc.params.raw; 737a17a5ff6SUsha Ketineni /* Ignore if event is not for Nearest Bridge */ 738a17a5ff6SUsha Ketineni type = ((mib->type >> ICE_AQ_LLDP_BRID_TYPE_S) & 739a17a5ff6SUsha Ketineni ICE_AQ_LLDP_BRID_TYPE_M); 7404015d11eSBrett Creeley dev_dbg(dev, "LLDP event MIB bridge type 0x%x\n", type); 741a17a5ff6SUsha Ketineni if (type != ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID) 742a17a5ff6SUsha Ketineni return; 743a17a5ff6SUsha Ketineni 744a17a5ff6SUsha Ketineni /* Check MIB Type and return if event for Remote MIB update */ 745a17a5ff6SUsha Ketineni type = mib->type & ICE_AQ_LLDP_MIB_TYPE_M; 7464015d11eSBrett Creeley dev_dbg(dev, "LLDP event mib type %s\n", type ? "remote" : "local"); 747a17a5ff6SUsha Ketineni if (type == ICE_AQ_LLDP_MIB_REMOTE) { 748a17a5ff6SUsha Ketineni /* Update the remote cached instance and return */ 749a17a5ff6SUsha Ketineni ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_REMOTE, 750a17a5ff6SUsha Ketineni ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, 751a17a5ff6SUsha Ketineni &pi->remote_dcbx_cfg); 752a17a5ff6SUsha Ketineni if (ret) { 7534015d11eSBrett Creeley dev_err(dev, "Failed to get remote DCB config\n"); 754a17a5ff6SUsha Ketineni return; 755a17a5ff6SUsha Ketineni } 756a17a5ff6SUsha Ketineni } 757a17a5ff6SUsha Ketineni 758242b5e06SDave Ertman mutex_lock(&pf->tc_mutex); 759242b5e06SDave Ertman 760a17a5ff6SUsha Ketineni /* store the old configuration */ 761a17a5ff6SUsha Ketineni tmp_dcbx_cfg = pf->hw.port_info->local_dcbx_cfg; 762a17a5ff6SUsha Ketineni 7632f2da36eSAnirudh Venkataramanan /* Reset the old DCBX configuration data */ 764a17a5ff6SUsha Ketineni memset(&pi->local_dcbx_cfg, 0, sizeof(pi->local_dcbx_cfg)); 765a17a5ff6SUsha Ketineni 7662f2da36eSAnirudh Venkataramanan /* Get updated DCBX data from firmware */ 767a17a5ff6SUsha Ketineni ret = ice_get_dcb_cfg(pf->hw.port_info); 768a17a5ff6SUsha Ketineni if (ret) { 7694015d11eSBrett Creeley dev_err(dev, "Failed to get DCB config\n"); 770242b5e06SDave Ertman goto out; 771a17a5ff6SUsha Ketineni } 772a17a5ff6SUsha Ketineni 773a17a5ff6SUsha Ketineni /* No change detected in DCBX configs */ 774a17a5ff6SUsha Ketineni if (!memcmp(&tmp_dcbx_cfg, &pi->local_dcbx_cfg, sizeof(tmp_dcbx_cfg))) { 7754015d11eSBrett Creeley dev_dbg(dev, "No change detected in DCBX configuration.\n"); 776242b5e06SDave Ertman goto out; 777a17a5ff6SUsha Ketineni } 778a17a5ff6SUsha Ketineni 779a17a5ff6SUsha Ketineni need_reconfig = ice_dcb_need_recfg(pf, &tmp_dcbx_cfg, 780a17a5ff6SUsha Ketineni &pi->local_dcbx_cfg); 781b94b013eSDave Ertman ice_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &pi->local_dcbx_cfg); 782a17a5ff6SUsha Ketineni if (!need_reconfig) 783242b5e06SDave Ertman goto out; 784a17a5ff6SUsha Ketineni 785a17a5ff6SUsha Ketineni /* Enable DCB tagging only when more than one TC */ 786a17a5ff6SUsha Ketineni if (ice_dcb_get_num_tc(&pi->local_dcbx_cfg) > 1) { 7874015d11eSBrett Creeley dev_dbg(dev, "DCB tagging enabled (num TC > 1)\n"); 788a17a5ff6SUsha Ketineni set_bit(ICE_FLAG_DCB_ENA, pf->flags); 789a17a5ff6SUsha Ketineni } else { 7904015d11eSBrett Creeley dev_dbg(dev, "DCB tagging disabled (num TC = 1)\n"); 791a17a5ff6SUsha Ketineni clear_bit(ICE_FLAG_DCB_ENA, pf->flags); 792a17a5ff6SUsha Ketineni } 793a17a5ff6SUsha Ketineni 7949d614b64SAnirudh Venkataramanan pf_vsi = ice_get_main_vsi(pf); 7959d614b64SAnirudh Venkataramanan if (!pf_vsi) { 7964015d11eSBrett Creeley dev_dbg(dev, "PF VSI doesn't exist\n"); 797242b5e06SDave Ertman goto out; 7989d614b64SAnirudh Venkataramanan } 7999d614b64SAnirudh Venkataramanan 800a17a5ff6SUsha Ketineni rtnl_lock(); 8019d614b64SAnirudh Venkataramanan ice_dis_vsi(pf_vsi, true); 802a17a5ff6SUsha Ketineni 803a17a5ff6SUsha Ketineni ret = ice_query_port_ets(pf->hw.port_info, &buf, sizeof(buf), NULL); 804a17a5ff6SUsha Ketineni if (ret) { 8054015d11eSBrett Creeley dev_err(dev, "Query Port ETS failed\n"); 806242b5e06SDave Ertman goto unlock_rtnl; 807a17a5ff6SUsha Ketineni } 808a17a5ff6SUsha Ketineni 809a17a5ff6SUsha Ketineni /* changes in configuration update VSI */ 810a17a5ff6SUsha Ketineni ice_pf_dcb_recfg(pf); 811a17a5ff6SUsha Ketineni 8129d614b64SAnirudh Venkataramanan ice_ena_vsi(pf_vsi, true); 813242b5e06SDave Ertman unlock_rtnl: 814a17a5ff6SUsha Ketineni rtnl_unlock(); 815242b5e06SDave Ertman out: 816242b5e06SDave Ertman mutex_unlock(&pf->tc_mutex); 81700cc3f1bSAnirudh Venkataramanan } 818