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