1 // SPDX-License-Identifier: GPL-2.0 2 /* Marvell RVU PF/VF Netdev Devlink 3 * 4 * Copyright (C) 2021 Marvell. 5 */ 6 7 #include "otx2_common.h" 8 9 /* Devlink Params APIs */ 10 static int otx2_dl_mcam_count_validate(struct devlink *devlink, u32 id, 11 union devlink_param_value val, 12 struct netlink_ext_ack *extack) 13 { 14 struct otx2_devlink *otx2_dl = devlink_priv(devlink); 15 struct otx2_nic *pfvf = otx2_dl->pfvf; 16 struct otx2_flow_config *flow_cfg; 17 18 if (!pfvf->flow_cfg) { 19 NL_SET_ERR_MSG_MOD(extack, 20 "pfvf->flow_cfg not initialized"); 21 return -EINVAL; 22 } 23 24 flow_cfg = pfvf->flow_cfg; 25 if (flow_cfg && flow_cfg->nr_flows) { 26 NL_SET_ERR_MSG_MOD(extack, 27 "Cannot modify count when there are active rules"); 28 return -EINVAL; 29 } 30 31 return 0; 32 } 33 34 static int otx2_dl_mcam_count_set(struct devlink *devlink, u32 id, 35 struct devlink_param_gset_ctx *ctx, 36 struct netlink_ext_ack *extack) 37 { 38 struct otx2_devlink *otx2_dl = devlink_priv(devlink); 39 struct otx2_nic *pfvf = otx2_dl->pfvf; 40 41 if (!pfvf->flow_cfg) 42 return 0; 43 44 otx2_alloc_mcam_entries(pfvf, ctx->val.vu16); 45 46 return 0; 47 } 48 49 static int otx2_dl_mcam_count_get(struct devlink *devlink, u32 id, 50 struct devlink_param_gset_ctx *ctx) 51 { 52 struct otx2_devlink *otx2_dl = devlink_priv(devlink); 53 struct otx2_nic *pfvf = otx2_dl->pfvf; 54 struct otx2_flow_config *flow_cfg; 55 56 if (!pfvf->flow_cfg) { 57 ctx->val.vu16 = 0; 58 return 0; 59 } 60 61 flow_cfg = pfvf->flow_cfg; 62 ctx->val.vu16 = flow_cfg->max_flows; 63 64 return 0; 65 } 66 67 static int otx2_dl_ucast_flt_cnt_set(struct devlink *devlink, u32 id, 68 struct devlink_param_gset_ctx *ctx, 69 struct netlink_ext_ack *extack) 70 { 71 struct otx2_devlink *otx2_dl = devlink_priv(devlink); 72 struct otx2_nic *pfvf = otx2_dl->pfvf; 73 int err; 74 75 pfvf->flow_cfg->ucast_flt_cnt = ctx->val.vu8; 76 77 otx2_mcam_flow_del(pfvf); 78 err = otx2_mcam_entry_init(pfvf); 79 if (err) 80 return err; 81 82 return 0; 83 } 84 85 static int otx2_dl_ucast_flt_cnt_get(struct devlink *devlink, u32 id, 86 struct devlink_param_gset_ctx *ctx) 87 { 88 struct otx2_devlink *otx2_dl = devlink_priv(devlink); 89 struct otx2_nic *pfvf = otx2_dl->pfvf; 90 91 ctx->val.vu8 = pfvf->flow_cfg ? pfvf->flow_cfg->ucast_flt_cnt : 0; 92 93 return 0; 94 } 95 96 static int otx2_dl_ucast_flt_cnt_validate(struct devlink *devlink, u32 id, 97 union devlink_param_value val, 98 struct netlink_ext_ack *extack) 99 { 100 struct otx2_devlink *otx2_dl = devlink_priv(devlink); 101 struct otx2_nic *pfvf = otx2_dl->pfvf; 102 103 /* Check for UNICAST filter support*/ 104 if (!(pfvf->flags & OTX2_FLAG_UCAST_FLTR_SUPPORT)) { 105 NL_SET_ERR_MSG_MOD(extack, 106 "Unicast filter not enabled"); 107 return -EINVAL; 108 } 109 110 if (!pfvf->flow_cfg) { 111 NL_SET_ERR_MSG_MOD(extack, 112 "pfvf->flow_cfg not initialized"); 113 return -EINVAL; 114 } 115 116 if (pfvf->flow_cfg->nr_flows) { 117 NL_SET_ERR_MSG_MOD(extack, 118 "Cannot modify count when there are active rules"); 119 return -EINVAL; 120 } 121 122 return 0; 123 } 124 125 enum otx2_dl_param_id { 126 OTX2_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX, 127 OTX2_DEVLINK_PARAM_ID_MCAM_COUNT, 128 OTX2_DEVLINK_PARAM_ID_UCAST_FLT_CNT, 129 }; 130 131 static const struct devlink_param otx2_dl_params[] = { 132 DEVLINK_PARAM_DRIVER(OTX2_DEVLINK_PARAM_ID_MCAM_COUNT, 133 "mcam_count", DEVLINK_PARAM_TYPE_U16, 134 BIT(DEVLINK_PARAM_CMODE_RUNTIME), 135 otx2_dl_mcam_count_get, otx2_dl_mcam_count_set, 136 otx2_dl_mcam_count_validate), 137 DEVLINK_PARAM_DRIVER(OTX2_DEVLINK_PARAM_ID_UCAST_FLT_CNT, 138 "unicast_filter_count", DEVLINK_PARAM_TYPE_U8, 139 BIT(DEVLINK_PARAM_CMODE_RUNTIME), 140 otx2_dl_ucast_flt_cnt_get, otx2_dl_ucast_flt_cnt_set, 141 otx2_dl_ucast_flt_cnt_validate), 142 }; 143 144 static const struct devlink_ops otx2_devlink_ops = { 145 }; 146 147 int otx2_register_dl(struct otx2_nic *pfvf) 148 { 149 struct otx2_devlink *otx2_dl; 150 struct devlink *dl; 151 int err; 152 153 dl = devlink_alloc(&otx2_devlink_ops, 154 sizeof(struct otx2_devlink), pfvf->dev); 155 if (!dl) { 156 dev_warn(pfvf->dev, "devlink_alloc failed\n"); 157 return -ENOMEM; 158 } 159 160 otx2_dl = devlink_priv(dl); 161 otx2_dl->dl = dl; 162 otx2_dl->pfvf = pfvf; 163 pfvf->dl = otx2_dl; 164 165 err = devlink_params_register(dl, otx2_dl_params, 166 ARRAY_SIZE(otx2_dl_params)); 167 if (err) { 168 dev_err(pfvf->dev, 169 "devlink params register failed with error %d", err); 170 goto err_dl; 171 } 172 173 devlink_register(dl); 174 return 0; 175 176 err_dl: 177 devlink_free(dl); 178 return err; 179 } 180 EXPORT_SYMBOL(otx2_register_dl); 181 182 void otx2_unregister_dl(struct otx2_nic *pfvf) 183 { 184 struct otx2_devlink *otx2_dl = pfvf->dl; 185 struct devlink *dl = otx2_dl->dl; 186 187 devlink_unregister(dl); 188 devlink_params_unregister(dl, otx2_dl_params, 189 ARRAY_SIZE(otx2_dl_params)); 190 devlink_free(dl); 191 } 192 EXPORT_SYMBOL(otx2_unregister_dl); 193