1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright (C) 2018-2021, Intel Corporation. */ 3 4 #ifndef _ICE_VF_LIB_H_ 5 #define _ICE_VF_LIB_H_ 6 7 #include <linux/types.h> 8 #include <linux/hashtable.h> 9 #include <linux/bitmap.h> 10 #include <linux/mutex.h> 11 #include <linux/pci.h> 12 #include <net/devlink.h> 13 #include <linux/avf/virtchnl.h> 14 #include "ice_type.h" 15 #include "ice_flow.h" 16 #include "ice_virtchnl_fdir.h" 17 #include "ice_vsi_vlan_ops.h" 18 19 #define ICE_MAX_SRIOV_VFS 256 20 21 /* VF resource constraints */ 22 #define ICE_MAX_RSS_QS_PER_VF 16 23 24 struct ice_pf; 25 struct ice_vf; 26 struct ice_virtchnl_ops; 27 28 /* VF capabilities */ 29 enum ice_virtchnl_cap { 30 ICE_VIRTCHNL_VF_CAP_PRIVILEGE = 0, 31 }; 32 33 /* Specific VF states */ 34 enum ice_vf_states { 35 ICE_VF_STATE_INIT = 0, /* PF is initializing VF */ 36 ICE_VF_STATE_ACTIVE, /* VF resources are allocated for use */ 37 ICE_VF_STATE_QS_ENA, /* VF queue(s) enabled */ 38 ICE_VF_STATE_DIS, 39 ICE_VF_STATE_MC_PROMISC, 40 ICE_VF_STATE_UC_PROMISC, 41 ICE_VF_STATES_NBITS 42 }; 43 44 struct ice_time_mac { 45 unsigned long time_modified; 46 u8 addr[ETH_ALEN]; 47 }; 48 49 /* VF MDD events print structure */ 50 struct ice_mdd_vf_events { 51 u16 count; /* total count of Rx|Tx events */ 52 /* count number of the last printed event */ 53 u16 last_printed; 54 }; 55 56 /* Structure to store fdir fv entry */ 57 struct ice_fdir_prof_info { 58 struct ice_parser_profile prof; 59 u64 fdir_active_cnt; 60 }; 61 62 /* VF operations */ 63 struct ice_vf_ops { 64 enum ice_disq_rst_src reset_type; 65 void (*free)(struct ice_vf *vf); 66 void (*clear_reset_state)(struct ice_vf *vf); 67 void (*clear_mbx_register)(struct ice_vf *vf); 68 void (*trigger_reset_register)(struct ice_vf *vf, bool is_vflr); 69 bool (*poll_reset_status)(struct ice_vf *vf); 70 void (*clear_reset_trigger)(struct ice_vf *vf); 71 void (*irq_close)(struct ice_vf *vf); 72 void (*post_vsi_rebuild)(struct ice_vf *vf); 73 }; 74 75 /* Virtchnl/SR-IOV config info */ 76 struct ice_vfs { 77 DECLARE_HASHTABLE(table, 8); /* table of VF entries */ 78 struct mutex table_lock; /* Lock for protecting the hash table */ 79 u16 num_supported; /* max supported VFs on this PF */ 80 u16 num_qps_per; /* number of queue pairs per VF */ 81 u16 num_msix_per; /* default MSI-X vectors per VF */ 82 unsigned long last_printed_mdd_jiffies; /* MDD message rate limit */ 83 }; 84 85 /* VF information structure */ 86 struct ice_vf { 87 struct hlist_node entry; 88 struct rcu_head rcu; 89 struct kref refcnt; 90 struct ice_pf *pf; 91 struct pci_dev *vfdev; 92 /* Used during virtchnl message handling and NDO ops against the VF 93 * that will trigger a VFR 94 */ 95 struct mutex cfg_lock; 96 97 u16 vf_id; /* VF ID in the PF space */ 98 u16 lan_vsi_idx; /* index into PF struct */ 99 u16 ctrl_vsi_idx; 100 struct ice_vf_fdir fdir; 101 struct ice_fdir_prof_info fdir_prof_info[ICE_MAX_PTGS]; 102 /* first vector index of this VF in the PF space */ 103 int first_vector_idx; 104 struct ice_sw *vf_sw_id; /* switch ID the VF VSIs connect to */ 105 struct virtchnl_version_info vf_ver; 106 u32 driver_caps; /* reported by VF driver */ 107 u8 dev_lan_addr[ETH_ALEN]; 108 u8 hw_lan_addr[ETH_ALEN]; 109 struct ice_time_mac legacy_last_added_umac; 110 DECLARE_BITMAP(txq_ena, ICE_MAX_RSS_QS_PER_VF); 111 DECLARE_BITMAP(rxq_ena, ICE_MAX_RSS_QS_PER_VF); 112 struct ice_vlan port_vlan_info; /* Port VLAN ID, QoS, and TPID */ 113 struct virtchnl_vlan_caps vlan_v2_caps; 114 struct ice_mbx_vf_info mbx_info; 115 u8 pf_set_mac:1; /* VF MAC address set by VMM admin */ 116 u8 trusted:1; 117 u8 spoofchk:1; 118 u8 link_forced:1; 119 u8 link_up:1; /* only valid if VF link is forced */ 120 unsigned int min_tx_rate; /* Minimum Tx bandwidth limit in Mbps */ 121 unsigned int max_tx_rate; /* Maximum Tx bandwidth limit in Mbps */ 122 DECLARE_BITMAP(vf_states, ICE_VF_STATES_NBITS); /* VF runtime states */ 123 124 unsigned long vf_caps; /* VF's adv. capabilities */ 125 u8 num_req_qs; /* num of queue pairs requested by VF */ 126 u16 num_mac; 127 u16 num_vf_qs; /* num of queue configured per VF */ 128 u8 vlan_strip_ena; /* Outer and Inner VLAN strip enable */ 129 #define ICE_INNER_VLAN_STRIP_ENA BIT(0) 130 #define ICE_OUTER_VLAN_STRIP_ENA BIT(1) 131 struct ice_mdd_vf_events mdd_rx_events; 132 struct ice_mdd_vf_events mdd_tx_events; 133 DECLARE_BITMAP(opcodes_allowlist, VIRTCHNL_OP_MAX); 134 135 unsigned long repr_id; 136 const struct ice_virtchnl_ops *virtchnl_ops; 137 const struct ice_vf_ops *vf_ops; 138 139 /* devlink port data */ 140 struct devlink_port devlink_port; 141 142 u16 num_msix; /* num of MSI-X configured on this VF */ 143 }; 144 145 /* Flags for controlling behavior of ice_reset_vf */ 146 enum ice_vf_reset_flags { 147 ICE_VF_RESET_VFLR = BIT(0), /* Indicate a VFLR reset */ 148 ICE_VF_RESET_NOTIFY = BIT(1), /* Notify VF prior to reset */ 149 ICE_VF_RESET_LOCK = BIT(2), /* Acquire the VF cfg_lock */ 150 }; 151 152 static inline u16 ice_vf_get_port_vlan_id(struct ice_vf *vf) 153 { 154 return vf->port_vlan_info.vid; 155 } 156 157 static inline u8 ice_vf_get_port_vlan_prio(struct ice_vf *vf) 158 { 159 return vf->port_vlan_info.prio; 160 } 161 162 static inline bool ice_vf_is_port_vlan_ena(struct ice_vf *vf) 163 { 164 return (ice_vf_get_port_vlan_id(vf) || ice_vf_get_port_vlan_prio(vf)); 165 } 166 167 static inline u16 ice_vf_get_port_vlan_tpid(struct ice_vf *vf) 168 { 169 return vf->port_vlan_info.tpid; 170 } 171 172 /* VF Hash Table access functions 173 * 174 * These functions provide abstraction for interacting with the VF hash table. 175 * In general, direct access to the hash table should be avoided outside of 176 * these functions where possible. 177 * 178 * The VF entries in the hash table are protected by reference counting to 179 * track lifetime of accesses from the table. The ice_get_vf_by_id() function 180 * obtains a reference to the VF structure which must be dropped by using 181 * ice_put_vf(). 182 */ 183 184 /** 185 * ice_for_each_vf - Iterate over each VF entry 186 * @pf: pointer to the PF private structure 187 * @bkt: bucket index used for iteration 188 * @vf: pointer to the VF entry currently being processed in the loop 189 * 190 * The bkt variable is an unsigned integer iterator used to traverse the VF 191 * entries. It is *not* guaranteed to be the VF's vf_id. Do not assume it is. 192 * Use vf->vf_id to get the id number if needed. 193 * 194 * The caller is expected to be under the table_lock mutex for the entire 195 * loop. Use this iterator if your loop is long or if it might sleep. 196 */ 197 #define ice_for_each_vf(pf, bkt, vf) \ 198 hash_for_each((pf)->vfs.table, (bkt), (vf), entry) 199 200 /** 201 * ice_for_each_vf_rcu - Iterate over each VF entry protected by RCU 202 * @pf: pointer to the PF private structure 203 * @bkt: bucket index used for iteration 204 * @vf: pointer to the VF entry currently being processed in the loop 205 * 206 * The bkt variable is an unsigned integer iterator used to traverse the VF 207 * entries. It is *not* guaranteed to be the VF's vf_id. Do not assume it is. 208 * Use vf->vf_id to get the id number if needed. 209 * 210 * The caller is expected to be under rcu_read_lock() for the entire loop. 211 * Only use this iterator if your loop is short and you can guarantee it does 212 * not sleep. 213 */ 214 #define ice_for_each_vf_rcu(pf, bkt, vf) \ 215 hash_for_each_rcu((pf)->vfs.table, (bkt), (vf), entry) 216 217 #ifdef CONFIG_PCI_IOV 218 struct ice_vf *ice_get_vf_by_id(struct ice_pf *pf, u16 vf_id); 219 void ice_put_vf(struct ice_vf *vf); 220 bool ice_has_vfs(struct ice_pf *pf); 221 u16 ice_get_num_vfs(struct ice_pf *pf); 222 struct ice_vsi *ice_get_vf_vsi(struct ice_vf *vf); 223 bool ice_is_vf_disabled(struct ice_vf *vf); 224 int ice_check_vf_ready_for_cfg(struct ice_vf *vf); 225 void ice_set_vf_state_dis(struct ice_vf *vf); 226 bool ice_is_any_vf_in_unicast_promisc(struct ice_pf *pf); 227 void 228 ice_vf_get_promisc_masks(struct ice_vf *vf, struct ice_vsi *vsi, 229 u8 *ucast_m, u8 *mcast_m); 230 int 231 ice_vf_set_vsi_promisc(struct ice_vf *vf, struct ice_vsi *vsi, u8 promisc_m); 232 int 233 ice_vf_clear_vsi_promisc(struct ice_vf *vf, struct ice_vsi *vsi, u8 promisc_m); 234 int ice_reset_vf(struct ice_vf *vf, u32 flags); 235 void ice_reset_all_vfs(struct ice_pf *pf); 236 struct ice_vsi *ice_get_vf_ctrl_vsi(struct ice_pf *pf, struct ice_vsi *vsi); 237 #else /* CONFIG_PCI_IOV */ 238 static inline struct ice_vf *ice_get_vf_by_id(struct ice_pf *pf, u16 vf_id) 239 { 240 return NULL; 241 } 242 243 static inline void ice_put_vf(struct ice_vf *vf) 244 { 245 } 246 247 static inline bool ice_has_vfs(struct ice_pf *pf) 248 { 249 return false; 250 } 251 252 static inline u16 ice_get_num_vfs(struct ice_pf *pf) 253 { 254 return 0; 255 } 256 257 static inline struct ice_vsi *ice_get_vf_vsi(struct ice_vf *vf) 258 { 259 return NULL; 260 } 261 262 static inline bool ice_is_vf_disabled(struct ice_vf *vf) 263 { 264 return true; 265 } 266 267 static inline int ice_check_vf_ready_for_cfg(struct ice_vf *vf) 268 { 269 return -EOPNOTSUPP; 270 } 271 272 static inline void ice_set_vf_state_dis(struct ice_vf *vf) 273 { 274 } 275 276 static inline bool ice_is_any_vf_in_unicast_promisc(struct ice_pf *pf) 277 { 278 return false; 279 } 280 281 static inline int 282 ice_vf_set_vsi_promisc(struct ice_vf *vf, struct ice_vsi *vsi, u8 promisc_m) 283 { 284 return -EOPNOTSUPP; 285 } 286 287 static inline int 288 ice_vf_clear_vsi_promisc(struct ice_vf *vf, struct ice_vsi *vsi, u8 promisc_m) 289 { 290 return -EOPNOTSUPP; 291 } 292 293 static inline int ice_reset_vf(struct ice_vf *vf, u32 flags) 294 { 295 return 0; 296 } 297 298 static inline void ice_reset_all_vfs(struct ice_pf *pf) 299 { 300 } 301 302 static inline struct ice_vsi * 303 ice_get_vf_ctrl_vsi(struct ice_pf *pf, struct ice_vsi *vsi) 304 { 305 return NULL; 306 } 307 #endif /* !CONFIG_PCI_IOV */ 308 309 #endif /* _ICE_VF_LIB_H_ */ 310