| /* |
| * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved. |
| * Copyright (c) 2004 Infinicon Corporation. All rights reserved. |
| * Copyright (c) 2004 Intel Corporation. All rights reserved. |
| * Copyright (c) 2004 Topspin Corporation. All rights reserved. |
| * Copyright (c) 2004 Voltaire Corporation. All rights reserved. |
| * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. |
| * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved. |
| * |
| * This software is available to you under a choice of one of two |
| * licenses. You may choose to be licensed under the terms of the GNU |
| * General Public License (GPL) Version 2, available from the file |
| * COPYING in the main directory of this source tree, or the |
| * OpenIB.org BSD license below: |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials |
| * provided with the distribution. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| #if !defined(IB_VERBS_H) |
| #define IB_VERBS_H |
| |
| #include <linux/types.h> |
| #include <linux/device.h> |
| #include <linux/mm.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/kref.h> |
| #include <linux/list.h> |
| #include <linux/rwsem.h> |
| #include <linux/scatterlist.h> |
| #include <linux/workqueue.h> |
| #include <linux/socket.h> |
| #include <linux/irq_poll.h> |
| #include <uapi/linux/if_ether.h> |
| #include <net/ipv6.h> |
| #include <net/ip.h> |
| #include <linux/string.h> |
| #include <linux/slab.h> |
| #include <linux/netdevice.h> |
| |
| #include <linux/if_link.h> |
| #include <linux/atomic.h> |
| #include <linux/mmu_notifier.h> |
| #include <linux/uaccess.h> |
| #include <linux/cgroup_rdma.h> |
| #include <uapi/rdma/ib_user_verbs.h> |
| |
| #define IB_FW_VERSION_NAME_MAX ETHTOOL_FWVERS_LEN |
| |
| extern struct workqueue_struct *ib_wq; |
| extern struct workqueue_struct *ib_comp_wq; |
| |
| union ib_gid { |
| u8 raw[16]; |
| struct { |
| __be64 subnet_prefix; |
| __be64 interface_id; |
| } global; |
| }; |
| |
| extern union ib_gid zgid; |
| |
| enum ib_gid_type { |
| /* If link layer is Ethernet, this is RoCE V1 */ |
| IB_GID_TYPE_IB = 0, |
| IB_GID_TYPE_ROCE = 0, |
| IB_GID_TYPE_ROCE_UDP_ENCAP = 1, |
| IB_GID_TYPE_SIZE |
| }; |
| |
| #define ROCE_V2_UDP_DPORT 4791 |
| struct ib_gid_attr { |
| enum ib_gid_type gid_type; |
| struct net_device *ndev; |
| }; |
| |
| enum rdma_node_type { |
| /* IB values map to NodeInfo:NodeType. */ |
| RDMA_NODE_IB_CA = 1, |
| RDMA_NODE_IB_SWITCH, |
| RDMA_NODE_IB_ROUTER, |
| RDMA_NODE_RNIC, |
| RDMA_NODE_USNIC, |
| RDMA_NODE_USNIC_UDP, |
| }; |
| |
| enum { |
| /* set the local administered indication */ |
| IB_SA_WELL_KNOWN_GUID = BIT_ULL(57) | 2, |
| }; |
| |
| enum rdma_transport_type { |
| RDMA_TRANSPORT_IB, |
| RDMA_TRANSPORT_IWARP, |
| RDMA_TRANSPORT_USNIC, |
| RDMA_TRANSPORT_USNIC_UDP |
| }; |
| |
| enum rdma_protocol_type { |
| RDMA_PROTOCOL_IB, |
| RDMA_PROTOCOL_IBOE, |
| RDMA_PROTOCOL_IWARP, |
| RDMA_PROTOCOL_USNIC_UDP |
| }; |
| |
| __attribute_const__ enum rdma_transport_type |
| rdma_node_get_transport(enum rdma_node_type node_type); |
| |
| enum rdma_network_type { |
| RDMA_NETWORK_IB, |
| RDMA_NETWORK_ROCE_V1 = RDMA_NETWORK_IB, |
| RDMA_NETWORK_IPV4, |
| RDMA_NETWORK_IPV6 |
| }; |
| |
| static inline enum ib_gid_type ib_network_to_gid_type(enum rdma_network_type network_type) |
| { |
| if (network_type == RDMA_NETWORK_IPV4 || |
| network_type == RDMA_NETWORK_IPV6) |
| return IB_GID_TYPE_ROCE_UDP_ENCAP; |
| |
| /* IB_GID_TYPE_IB same as RDMA_NETWORK_ROCE_V1 */ |
| return IB_GID_TYPE_IB; |
| } |
| |
| static inline enum rdma_network_type ib_gid_to_network_type(enum ib_gid_type gid_type, |
| union ib_gid *gid) |
| { |
| if (gid_type == IB_GID_TYPE_IB) |
| return RDMA_NETWORK_IB; |
| |
| if (ipv6_addr_v4mapped((struct in6_addr *)gid)) |
| return RDMA_NETWORK_IPV4; |
| else |
| return RDMA_NETWORK_IPV6; |
| } |
| |
| enum rdma_link_layer { |
| IB_LINK_LAYER_UNSPECIFIED, |
| IB_LINK_LAYER_INFINIBAND, |
| IB_LINK_LAYER_ETHERNET, |
| }; |
| |
| enum ib_device_cap_flags { |
| IB_DEVICE_RESIZE_MAX_WR = (1 << 0), |
| IB_DEVICE_BAD_PKEY_CNTR = (1 << 1), |
| IB_DEVICE_BAD_QKEY_CNTR = (1 << 2), |
| IB_DEVICE_RAW_MULTI = (1 << 3), |
| IB_DEVICE_AUTO_PATH_MIG = (1 << 4), |
| IB_DEVICE_CHANGE_PHY_PORT = (1 << 5), |
| IB_DEVICE_UD_AV_PORT_ENFORCE = (1 << 6), |
| IB_DEVICE_CURR_QP_STATE_MOD = (1 << 7), |
| IB_DEVICE_SHUTDOWN_PORT = (1 << 8), |
| /* Not in use, former INIT_TYPE = (1 << 9),*/ |
| IB_DEVICE_PORT_ACTIVE_EVENT = (1 << 10), |
| IB_DEVICE_SYS_IMAGE_GUID = (1 << 11), |
| IB_DEVICE_RC_RNR_NAK_GEN = (1 << 12), |
| IB_DEVICE_SRQ_RESIZE = (1 << 13), |
| IB_DEVICE_N_NOTIFY_CQ = (1 << 14), |
| |
| /* |
| * This device supports a per-device lkey or stag that can be |
| * used without performing a memory registration for the local |
| * memory. Note that ULPs should never check this flag, but |
| * instead of use the local_dma_lkey flag in the ib_pd structure, |
| * which will always contain a usable lkey. |
| */ |
| IB_DEVICE_LOCAL_DMA_LKEY = (1 << 15), |
| /* Reserved, old SEND_W_INV = (1 << 16),*/ |
| IB_DEVICE_MEM_WINDOW = (1 << 17), |
| /* |
| * Devices should set IB_DEVICE_UD_IP_SUM if they support |
| * insertion of UDP and TCP checksum on outgoing UD IPoIB |
| * messages and can verify the validity of checksum for |
| * incoming messages. Setting this flag implies that the |
| * IPoIB driver may set NETIF_F_IP_CSUM for datagram mode. |
| */ |
| IB_DEVICE_UD_IP_CSUM = (1 << 18), |
| IB_DEVICE_UD_TSO = (1 << 19), |
| IB_DEVICE_XRC = (1 << 20), |
| |
| /* |
| * This device supports the IB "base memory management extension", |
| * which includes support for fast registrations (IB_WR_REG_MR, |
| * IB_WR_LOCAL_INV and IB_WR_SEND_WITH_INV verbs). This flag should |
| * also be set by any iWarp device which must support FRs to comply |
| * to the iWarp verbs spec. iWarp devices also support the |
| * IB_WR_RDMA_READ_WITH_INV verb for RDMA READs that invalidate the |
| * stag. |
| */ |
| IB_DEVICE_MEM_MGT_EXTENSIONS = (1 << 21), |
| IB_DEVICE_BLOCK_MULTICAST_LOOPBACK = (1 << 22), |
| IB_DEVICE_MEM_WINDOW_TYPE_2A = (1 << 23), |
| IB_DEVICE_MEM_WINDOW_TYPE_2B = (1 << 24), |
| IB_DEVICE_RC_IP_CSUM = (1 << 25), |
| /* Deprecated. Please use IB_RAW_PACKET_CAP_IP_CSUM. */ |
| IB_DEVICE_RAW_IP_CSUM = (1 << 26), |
| /* |
| * Devices should set IB_DEVICE_CROSS_CHANNEL if they |
| * support execution of WQEs that involve synchronization |
| * of I/O operations with single completion queue managed |
| * by hardware. |
| */ |
| IB_DEVICE_CROSS_CHANNEL = (1 << 27), |
| IB_DEVICE_MANAGED_FLOW_STEERING = (1 << 29), |
| IB_DEVICE_SIGNATURE_HANDOVER = (1 << 30), |
| IB_DEVICE_ON_DEMAND_PAGING = (1ULL << 31), |
| IB_DEVICE_SG_GAPS_REG = (1ULL << 32), |
| IB_DEVICE_VIRTUAL_FUNCTION = (1ULL << 33), |
| /* Deprecated. Please use IB_RAW_PACKET_CAP_SCATTER_FCS. */ |
| IB_DEVICE_RAW_SCATTER_FCS = (1ULL << 34), |
| IB_DEVICE_RDMA_NETDEV_OPA_VNIC = (1ULL << 35), |
| }; |
| |
| enum ib_signature_prot_cap { |
| IB_PROT_T10DIF_TYPE_1 = 1, |
| IB_PROT_T10DIF_TYPE_2 = 1 << 1, |
| IB_PROT_T10DIF_TYPE_3 = 1 << 2, |
| }; |
| |
| enum ib_signature_guard_cap { |
| IB_GUARD_T10DIF_CRC = 1, |
| IB_GUARD_T10DIF_CSUM = 1 << 1, |
| }; |
| |
| enum ib_atomic_cap { |
| IB_ATOMIC_NONE, |
| IB_ATOMIC_HCA, |
| IB_ATOMIC_GLOB |
| }; |
| |
| enum ib_odp_general_cap_bits { |
| IB_ODP_SUPPORT = 1 << 0, |
| IB_ODP_SUPPORT_IMPLICIT = 1 << 1, |
| }; |
| |
| enum ib_odp_transport_cap_bits { |
| IB_ODP_SUPPORT_SEND = 1 << 0, |
| IB_ODP_SUPPORT_RECV = 1 << 1, |
| IB_ODP_SUPPORT_WRITE = 1 << 2, |
| IB_ODP_SUPPORT_READ = 1 << 3, |
| IB_ODP_SUPPORT_ATOMIC = 1 << 4, |
| }; |
| |
| struct ib_odp_caps { |
| uint64_t general_caps; |
| struct { |
| uint32_t rc_odp_caps; |
| uint32_t uc_odp_caps; |
| uint32_t ud_odp_caps; |
| } per_transport_caps; |
| }; |
| |
| struct ib_rss_caps { |
| /* Corresponding bit will be set if qp type from |
| * 'enum ib_qp_type' is supported, e.g. |
| * supported_qpts |= 1 << IB_QPT_UD |
| */ |
| u32 supported_qpts; |
| u32 max_rwq_indirection_tables; |
| u32 max_rwq_indirection_table_size; |
| }; |
| |
| enum ib_tm_cap_flags { |
| /* Support tag matching on RC transport */ |
| IB_TM_CAP_RC = 1 << 0, |
| }; |
| |
| struct ib_tm_caps { |
| /* Max size of RNDV header */ |
| u32 max_rndv_hdr_size; |
| /* Max number of entries in tag matching list */ |
| u32 max_num_tags; |
| /* From enum ib_tm_cap_flags */ |
| u32 flags; |
| /* Max number of outstanding list operations */ |
| u32 max_ops; |
| /* Max number of SGE in tag matching entry */ |
| u32 max_sge; |
| }; |
| |
| enum ib_cq_creation_flags { |
| IB_CQ_FLAGS_TIMESTAMP_COMPLETION = 1 << 0, |
| IB_CQ_FLAGS_IGNORE_OVERRUN = 1 << 1, |
| }; |
| |
| struct ib_cq_init_attr { |
| unsigned int cqe; |
| int comp_vector; |
| u32 flags; |
| }; |
| |
| struct ib_device_attr { |
| u64 fw_ver; |
| __be64 sys_image_guid; |
| u64 max_mr_size; |
| u64 page_size_cap; |
| u32 vendor_id; |
| u32 vendor_part_id; |
| u32 hw_ver; |
| int max_qp; |
| int max_qp_wr; |
| u64 device_cap_flags; |
| int max_sge; |
| int max_sge_rd; |
| int max_cq; |
| int max_cqe; |
| int max_mr; |
| int max_pd; |
| int max_qp_rd_atom; |
| int max_ee_rd_atom; |
| int max_res_rd_atom; |
| int max_qp_init_rd_atom; |
| int max_ee_init_rd_atom; |
| enum ib_atomic_cap atomic_cap; |
| enum ib_atomic_cap masked_atomic_cap; |
| int max_ee; |
| int max_rdd; |
| int max_mw; |
| int max_raw_ipv6_qp; |
| int max_raw_ethy_qp; |
| int max_mcast_grp; |
| int max_mcast_qp_attach; |
| int max_total_mcast_qp_attach; |
| int max_ah; |
| int max_fmr; |
| int max_map_per_fmr; |
| int max_srq; |
| int max_srq_wr; |
| int max_srq_sge; |
| unsigned int max_fast_reg_page_list_len; |
| u16 max_pkeys; |
| u8 local_ca_ack_delay; |
| int sig_prot_cap; |
| int sig_guard_cap; |
| struct ib_odp_caps odp_caps; |
| uint64_t timestamp_mask; |
| uint64_t hca_core_clock; /* in KHZ */ |
| struct ib_rss_caps rss_caps; |
| u32 max_wq_type_rq; |
| u32 raw_packet_caps; /* Use ib_raw_packet_caps enum */ |
| struct ib_tm_caps tm_caps; |
| }; |
| |
| enum ib_mtu { |
| IB_MTU_256 = 1, |
| IB_MTU_512 = 2, |
| IB_MTU_1024 = 3, |
| IB_MTU_2048 = 4, |
| IB_MTU_4096 = 5 |
| }; |
| |
| static inline int ib_mtu_enum_to_int(enum ib_mtu mtu) |
| { |
| switch (mtu) { |
| case IB_MTU_256: return 256; |
| case IB_MTU_512: return 512; |
| case IB_MTU_1024: return 1024; |
| case IB_MTU_2048: return 2048; |
| case IB_MTU_4096: return 4096; |
| default: return -1; |
| } |
| } |
| |
| static inline enum ib_mtu ib_mtu_int_to_enum(int mtu) |
| { |
| if (mtu >= 4096) |
| return IB_MTU_4096; |
| else if (mtu >= 2048) |
| return IB_MTU_2048; |
| else if (mtu >= 1024) |
| return IB_MTU_1024; |
| else if (mtu >= 512) |
| return IB_MTU_512; |
| else |
| return IB_MTU_256; |
| } |
| |
| enum ib_port_state { |
| IB_PORT_NOP = 0, |
| IB_PORT_DOWN = 1, |
| IB_PORT_INIT = 2, |
| IB_PORT_ARMED = 3, |
| IB_PORT_ACTIVE = 4, |
| IB_PORT_ACTIVE_DEFER = 5 |
| }; |
| |
| enum ib_port_cap_flags { |
| IB_PORT_SM = 1 << 1, |
| IB_PORT_NOTICE_SUP = 1 << 2, |
| IB_PORT_TRAP_SUP = 1 << 3, |
| IB_PORT_OPT_IPD_SUP = 1 << 4, |
| IB_PORT_AUTO_MIGR_SUP = 1 << 5, |
| IB_PORT_SL_MAP_SUP = 1 << 6, |
| IB_PORT_MKEY_NVRAM = 1 << 7, |
| IB_PORT_PKEY_NVRAM = 1 << 8, |
| IB_PORT_LED_INFO_SUP = 1 << 9, |
| IB_PORT_SM_DISABLED = 1 << 10, |
| IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11, |
| IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12, |
| IB_PORT_EXTENDED_SPEEDS_SUP = 1 << 14, |
| IB_PORT_CM_SUP = 1 << 16, |
| IB_PORT_SNMP_TUNNEL_SUP = 1 << 17, |
| IB_PORT_REINIT_SUP = 1 << 18, |
| IB_PORT_DEVICE_MGMT_SUP = 1 << 19, |
| IB_PORT_VENDOR_CLASS_SUP = 1 << 20, |
| IB_PORT_DR_NOTICE_SUP = 1 << 21, |
| IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22, |
| IB_PORT_BOOT_MGMT_SUP = 1 << 23, |
| IB_PORT_LINK_LATENCY_SUP = 1 << 24, |
| IB_PORT_CLIENT_REG_SUP = 1 << 25, |
| IB_PORT_IP_BASED_GIDS = 1 << 26, |
| }; |
| |
| enum ib_port_width { |
| IB_WIDTH_1X = 1, |
| IB_WIDTH_4X = 2, |
| IB_WIDTH_8X = 4, |
| IB_WIDTH_12X = 8 |
| }; |
| |
| static inline int ib_width_enum_to_int(enum ib_port_width width) |
| { |
| switch (width) { |
| case IB_WIDTH_1X: return 1; |
| case IB_WIDTH_4X: return 4; |
| case IB_WIDTH_8X: return 8; |
| case IB_WIDTH_12X: return 12; |
| default: return -1; |
| } |
| } |
| |
| enum ib_port_speed { |
| IB_SPEED_SDR = 1, |
| IB_SPEED_DDR = 2, |
| IB_SPEED_QDR = 4, |
| IB_SPEED_FDR10 = 8, |
| IB_SPEED_FDR = 16, |
| IB_SPEED_EDR = 32, |
| IB_SPEED_HDR = 64 |
| }; |
| |
| /** |
| * struct rdma_hw_stats |
| * @timestamp - Used by the core code to track when the last update was |
| * @lifespan - Used by the core code to determine how old the counters |
| * should be before being updated again. Stored in jiffies, defaults |
| * to 10 milliseconds, drivers can override the default be specifying |
| * their own value during their allocation routine. |
| * @name - Array of pointers to static names used for the counters in |
| * directory. |
| * @num_counters - How many hardware counters there are. If name is |
| * shorter than this number, a kernel oops will result. Driver authors |
| * are encouraged to leave BUILD_BUG_ON(ARRAY_SIZE(@name) < num_counters) |
| * in their code to prevent this. |
| * @value - Array of u64 counters that are accessed by the sysfs code and |
| * filled in by the drivers get_stats routine |
| */ |
| struct rdma_hw_stats { |
| unsigned long timestamp; |
| unsigned long lifespan; |
| const char * const *names; |
| int num_counters; |
| u64 value[]; |
| }; |
| |
| #define RDMA_HW_STATS_DEFAULT_LIFESPAN 10 |
| /** |
| * rdma_alloc_hw_stats_struct - Helper function to allocate dynamic struct |
| * for drivers. |
| * @names - Array of static const char * |
| * @num_counters - How many elements in array |
| * @lifespan - How many milliseconds between updates |
| */ |
| static inline struct rdma_hw_stats *rdma_alloc_hw_stats_struct( |
| const char * const *names, int num_counters, |
| unsigned long lifespan) |
| { |
| struct rdma_hw_stats *stats; |
| |
| stats = kzalloc(sizeof(*stats) + num_counters * sizeof(u64), |
| GFP_KERNEL); |
| if (!stats) |
| return NULL; |
| stats->names = names; |
| stats->num_counters = num_counters; |
| stats->lifespan = msecs_to_jiffies(lifespan); |
| |
| return stats; |
| } |
| |
| |
| /* Define bits for the various functionality this port needs to be supported by |
| * the core. |
| */ |
| /* Management 0x00000FFF */ |
| #define RDMA_CORE_CAP_IB_MAD 0x00000001 |
| #define RDMA_CORE_CAP_IB_SMI 0x00000002 |
| #define RDMA_CORE_CAP_IB_CM 0x00000004 |
| #define RDMA_CORE_CAP_IW_CM 0x00000008 |
| #define RDMA_CORE_CAP_IB_SA 0x00000010 |
| #define RDMA_CORE_CAP_OPA_MAD 0x00000020 |
| |
| /* Address format 0x000FF000 */ |
| #define RDMA_CORE_CAP_AF_IB 0x00001000 |
| #define RDMA_CORE_CAP_ETH_AH 0x00002000 |
| #define RDMA_CORE_CAP_OPA_AH 0x00004000 |
| |
| /* Protocol 0xFFF00000 */ |
| #define RDMA_CORE_CAP_PROT_IB 0x00100000 |
| #define RDMA_CORE_CAP_PROT_ROCE 0x00200000 |
| #define RDMA_CORE_CAP_PROT_IWARP 0x00400000 |
| #define RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP 0x00800000 |
| #define RDMA_CORE_CAP_PROT_RAW_PACKET 0x01000000 |
| #define RDMA_CORE_CAP_PROT_USNIC 0x02000000 |
| |
| #define RDMA_CORE_PORT_IBA_IB (RDMA_CORE_CAP_PROT_IB \ |
| | RDMA_CORE_CAP_IB_MAD \ |
| | RDMA_CORE_CAP_IB_SMI \ |
| | RDMA_CORE_CAP_IB_CM \ |
| | RDMA_CORE_CAP_IB_SA \ |
| | RDMA_CORE_CAP_AF_IB) |
| #define RDMA_CORE_PORT_IBA_ROCE (RDMA_CORE_CAP_PROT_ROCE \ |
| | RDMA_CORE_CAP_IB_MAD \ |
| | RDMA_CORE_CAP_IB_CM \ |
| | RDMA_CORE_CAP_AF_IB \ |
| | RDMA_CORE_CAP_ETH_AH) |
| #define RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP \ |
| (RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP \ |
| | RDMA_CORE_CAP_IB_MAD \ |
| | RDMA_CORE_CAP_IB_CM \ |
| | RDMA_CORE_CAP_AF_IB \ |
| | RDMA_CORE_CAP_ETH_AH) |
| #define RDMA_CORE_PORT_IWARP (RDMA_CORE_CAP_PROT_IWARP \ |
| | RDMA_CORE_CAP_IW_CM) |
| #define RDMA_CORE_PORT_INTEL_OPA (RDMA_CORE_PORT_IBA_IB \ |
| | RDMA_CORE_CAP_OPA_MAD) |
| |
| #define RDMA_CORE_PORT_RAW_PACKET (RDMA_CORE_CAP_PROT_RAW_PACKET) |
| |
| #define RDMA_CORE_PORT_USNIC (RDMA_CORE_CAP_PROT_USNIC) |
| |
| struct ib_port_attr { |
| u64 subnet_prefix; |
| enum ib_port_state state; |
| enum ib_mtu max_mtu; |
| enum ib_mtu active_mtu; |
| int gid_tbl_len; |
| u32 port_cap_flags; |
| u32 max_msg_sz; |
| u32 bad_pkey_cntr; |
| u32 qkey_viol_cntr; |
| u16 pkey_tbl_len; |
| u32 sm_lid; |
| u32 lid; |
| u8 lmc; |
| u8 max_vl_num; |
| u8 sm_sl; |
| u8 subnet_timeout; |
| u8 init_type_reply; |
| u8 active_width; |
| u8 active_speed; |
| u8 phys_state; |
| bool grh_required; |
| }; |
| |
| enum ib_device_modify_flags { |
| IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0, |
| IB_DEVICE_MODIFY_NODE_DESC = 1 << 1 |
| }; |
| |
| #define IB_DEVICE_NODE_DESC_MAX 64 |
| |
| struct ib_device_modify { |
| u64 sys_image_guid; |
| char node_desc[IB_DEVICE_NODE_DESC_MAX]; |
| }; |
| |
| enum ib_port_modify_flags { |
| IB_PORT_SHUTDOWN = 1, |
| IB_PORT_INIT_TYPE = (1<<2), |
| IB_PORT_RESET_QKEY_CNTR = (1<<3), |
| IB_PORT_OPA_MASK_CHG = (1<<4) |
| }; |
| |
| struct ib_port_modify { |
| u32 set_port_cap_mask; |
| u32 clr_port_cap_mask; |
| u8 init_type; |
| }; |
| |
| enum ib_event_type { |
| IB_EVENT_CQ_ERR, |
| IB_EVENT_QP_FATAL, |
| IB_EVENT_QP_REQ_ERR, |
| IB_EVENT_QP_ACCESS_ERR, |
| IB_EVENT_COMM_EST, |
| IB_EVENT_SQ_DRAINED, |
| IB_EVENT_PATH_MIG, |
| IB_EVENT_PATH_MIG_ERR, |
| IB_EVENT_DEVICE_FATAL, |
| IB_EVENT_PORT_ACTIVE, |
| IB_EVENT_PORT_ERR, |
| IB_EVENT_LID_CHANGE, |
| IB_EVENT_PKEY_CHANGE, |
| IB_EVENT_SM_CHANGE, |
| IB_EVENT_SRQ_ERR, |
| IB_EVENT_SRQ_LIMIT_REACHED, |
| IB_EVENT_QP_LAST_WQE_REACHED, |
| IB_EVENT_CLIENT_REREGISTER, |
| IB_EVENT_GID_CHANGE, |
| IB_EVENT_WQ_FATAL, |
| }; |
| |
| const char *__attribute_const__ ib_event_msg(enum ib_event_type event); |
| |
| struct ib_event { |
| struct ib_device *device; |
| union { |
| struct ib_cq *cq; |
| struct ib_qp *qp; |
| struct ib_srq *srq; |
| struct ib_wq *wq; |
| u8 port_num; |
| } element; |
| enum ib_event_type event; |
| }; |
| |
| struct ib_event_handler { |
| struct ib_device *device; |
| void (*handler)(struct ib_event_handler *, struct ib_event *); |
| struct list_head list; |
| }; |
| |
| #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \ |
| do { \ |
| (_ptr)->device = _device; \ |
| (_ptr)->handler = _handler; \ |
| INIT_LIST_HEAD(&(_ptr)->list); \ |
| } while (0) |
| |
| struct ib_global_route { |
| union ib_gid dgid; |
| u32 flow_label; |
| u8 sgid_index; |
| u8 hop_limit; |
| u8 traffic_class; |
| }; |
| |
| struct ib_grh { |
| __be32 version_tclass_flow; |
| __be16 paylen; |
| u8 next_hdr; |
| u8 hop_limit; |
| union ib_gid sgid; |
| union ib_gid dgid; |
| }; |
| |
| union rdma_network_hdr { |
| struct ib_grh ibgrh; |
| struct { |
| /* The IB spec states that if it's IPv4, the header |
| * is located in the last 20 bytes of the header. |
| */ |
| u8 reserved[20]; |
| struct iphdr roce4grh; |
| }; |
| }; |
| |
| #define IB_QPN_MASK 0xFFFFFF |
| |
| enum { |
| IB_MULTICAST_QPN = 0xffffff |
| }; |
| |
| #define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF) |
| #define IB_MULTICAST_LID_BASE cpu_to_be16(0xC000) |
| |
| enum ib_ah_flags { |
| IB_AH_GRH = 1 |
| }; |
| |
| enum ib_rate { |
| IB_RATE_PORT_CURRENT = 0, |
| IB_RATE_2_5_GBPS = 2, |
| IB_RATE_5_GBPS = 5, |
| IB_RATE_10_GBPS = 3, |
| IB_RATE_20_GBPS = 6, |
| IB_RATE_30_GBPS = 4, |
| IB_RATE_40_GBPS = 7, |
| IB_RATE_60_GBPS = 8, |
| IB_RATE_80_GBPS = 9, |
| IB_RATE_120_GBPS = 10, |
| IB_RATE_14_GBPS = 11, |
| IB_RATE_56_GBPS = 12, |
| IB_RATE_112_GBPS = 13, |
| IB_RATE_168_GBPS = 14, |
| IB_RATE_25_GBPS = 15, |
| IB_RATE_100_GBPS = 16, |
| IB_RATE_200_GBPS = 17, |
| IB_RATE_300_GBPS = 18 |
| }; |
| |
| /** |
| * ib_rate_to_mult - Convert the IB rate enum to a multiple of the |
| * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be |
| * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec. |
| * @rate: rate to convert. |
| */ |
| __attribute_const__ int ib_rate_to_mult(enum ib_rate rate); |
| |
| /** |
| * ib_rate_to_mbps - Convert the IB rate enum to Mbps. |
| * For example, IB_RATE_2_5_GBPS will be converted to 2500. |
| * @rate: rate to convert. |
| */ |
| __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate); |
| |
| |
| /** |
| * enum ib_mr_type - memory region type |
| * @IB_MR_TYPE_MEM_REG: memory region that is used for |
| * normal registration |
| * @IB_MR_TYPE_SIGNATURE: memory region that is used for |
| * signature operations (data-integrity |
| * capable regions) |
| * @IB_MR_TYPE_SG_GAPS: memory region that is capable to |
| * register any arbitrary sg lists (without |
| * the normal mr constraints - see |
| * ib_map_mr_sg) |
| */ |
| enum ib_mr_type { |
| IB_MR_TYPE_MEM_REG, |
| IB_MR_TYPE_SIGNATURE, |
| IB_MR_TYPE_SG_GAPS, |
| }; |
| |
| /** |
| * Signature types |
| * IB_SIG_TYPE_NONE: Unprotected. |
| * IB_SIG_TYPE_T10_DIF: Type T10-DIF |
| */ |
| enum ib_signature_type { |
| IB_SIG_TYPE_NONE, |
| IB_SIG_TYPE_T10_DIF, |
| }; |
| |
| /** |
| * Signature T10-DIF block-guard types |
| * IB_T10DIF_CRC: Corresponds to T10-PI mandated CRC checksum rules. |
| * IB_T10DIF_CSUM: Corresponds to IP checksum rules. |
| */ |
| enum ib_t10_dif_bg_type { |
| IB_T10DIF_CRC, |
| IB_T10DIF_CSUM |
| }; |
| |
| /** |
| * struct ib_t10_dif_domain - Parameters specific for T10-DIF |
| * domain. |
| * @bg_type: T10-DIF block guard type (CRC|CSUM) |
| * @pi_interval: protection information interval. |
| * @bg: seed of guard computation. |
| * @app_tag: application tag of guard block |
| * @ref_tag: initial guard block reference tag. |
| * @ref_remap: Indicate wethear the reftag increments each block |
| * @app_escape: Indicate to skip block check if apptag=0xffff |
| * @ref_escape: Indicate to skip block check if reftag=0xffffffff |
| * @apptag_check_mask: check bitmask of application tag. |
| */ |
| struct ib_t10_dif_domain { |
| enum ib_t10_dif_bg_type bg_type; |
| u16 pi_interval; |
| u16 bg; |
| u16 app_tag; |
| u32 ref_tag; |
| bool ref_remap; |
| bool app_escape; |
| bool ref_escape; |
| u16 apptag_check_mask; |
| }; |
| |
| /** |
| * struct ib_sig_domain - Parameters for signature domain |
| * @sig_type: specific signauture type |
| * @sig: union of all signature domain attributes that may |
| * be used to set domain layout. |
| */ |
| struct ib_sig_domain { |
| enum ib_signature_type sig_type; |
| union { |
| struct ib_t10_dif_domain dif; |
| } sig; |
| }; |
| |
| /** |
| * struct ib_sig_attrs - Parameters for signature handover operation |
| * @check_mask: bitmask for signature byte check (8 bytes) |
| * @mem: memory domain layout desciptor. |
| * @wire: wire domain layout desciptor. |
| */ |
| struct ib_sig_attrs { |
| u8 check_mask; |
| struct ib_sig_domain mem; |
| struct ib_sig_domain wire; |
| }; |
| |
| enum ib_sig_err_type { |
| IB_SIG_BAD_GUARD, |
| IB_SIG_BAD_REFTAG, |
| IB_SIG_BAD_APPTAG, |
| }; |
| |
| /** |
| * struct ib_sig_err - signature error descriptor |
| */ |
| struct ib_sig_err { |
| enum ib_sig_err_type err_type; |
| u32 expected; |
| u32 actual; |
| u64 sig_err_offset; |
| u32 key; |
| }; |
| |
| enum ib_mr_status_check { |
| IB_MR_CHECK_SIG_STATUS = 1, |
| }; |
| |
| /** |
| * struct ib_mr_status - Memory region status container |
| * |
| * @fail_status: Bitmask of MR checks status. For each |
| * failed check a corresponding status bit is set. |
| * @sig_err: Additional info for IB_MR_CEHCK_SIG_STATUS |
| * failure. |
| */ |
| struct ib_mr_status { |
| u32 fail_status; |
| struct ib_sig_err sig_err; |
| }; |
| |
| /** |
| * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate |
| * enum. |
| * @mult: multiple to convert. |
| */ |
| __attribute_const__ enum ib_rate mult_to_ib_rate(int mult); |
| |
| enum rdma_ah_attr_type { |
| RDMA_AH_ATTR_TYPE_IB, |
| RDMA_AH_ATTR_TYPE_ROCE, |
| RDMA_AH_ATTR_TYPE_OPA, |
| }; |
| |
| struct ib_ah_attr { |
| u16 dlid; |
| u8 src_path_bits; |
| }; |
| |
| struct roce_ah_attr { |
| u8 dmac[ETH_ALEN]; |
| }; |
| |
| struct opa_ah_attr { |
| u32 dlid; |
| u8 src_path_bits; |
| bool make_grd; |
| }; |
| |
| struct rdma_ah_attr { |
| struct ib_global_route grh; |
| u8 sl; |
| u8 static_rate; |
| u8 port_num; |
| u8 ah_flags; |
| enum rdma_ah_attr_type type; |
| union { |
| struct ib_ah_attr ib; |
| struct roce_ah_attr roce; |
| struct opa_ah_attr opa; |
| }; |
| }; |
| |
| enum ib_wc_status { |
| IB_WC_SUCCESS, |
| IB_WC_LOC_LEN_ERR, |
| IB_WC_LOC_QP_OP_ERR, |
| IB_WC_LOC_EEC_OP_ERR, |
| IB_WC_LOC_PROT_ERR, |
| IB_WC_WR_FLUSH_ERR, |
| IB_WC_MW_BIND_ERR, |
| IB_WC_BAD_RESP_ERR, |
| IB_WC_LOC_ACCESS_ERR, |
| IB_WC_REM_INV_REQ_ERR, |
| IB_WC_REM_ACCESS_ERR, |
| IB_WC_REM_OP_ERR, |
| IB_WC_RETRY_EXC_ERR, |
| IB_WC_RNR_RETRY_EXC_ERR, |
| IB_WC_LOC_RDD_VIOL_ERR, |
| IB_WC_REM_INV_RD_REQ_ERR, |
| IB_WC_REM_ABORT_ERR, |
| IB_WC_INV_EECN_ERR, |
| IB_WC_INV_EEC_STATE_ERR, |
| IB_WC_FATAL_ERR, |
| IB_WC_RESP_TIMEOUT_ERR, |
| IB_WC_GENERAL_ERR |
| }; |
| |
| const char *__attribute_const__ ib_wc_status_msg(enum ib_wc_status status); |
| |
| enum ib_wc_opcode { |
| IB_WC_SEND, |
| IB_WC_RDMA_WRITE, |
| IB_WC_RDMA_READ, |
| IB_WC_COMP_SWAP, |
| IB_WC_FETCH_ADD, |
| IB_WC_LSO, |
| IB_WC_LOCAL_INV, |
| IB_WC_REG_MR, |
| IB_WC_MASKED_COMP_SWAP, |
| IB_WC_MASKED_FETCH_ADD, |
| /* |
| * Set value of IB_WC_RECV so consumers can test if a completion is a |
| * receive by testing (opcode & IB_WC_RECV). |
| */ |
| IB_WC_RECV = 1 << 7, |
| IB_WC_RECV_RDMA_WITH_IMM |
| }; |
| |
| enum ib_wc_flags { |
| IB_WC_GRH = 1, |
| IB_WC_WITH_IMM = (1<<1), |
| IB_WC_WITH_INVALIDATE = (1<<2), |
| IB_WC_IP_CSUM_OK = (1<<3), |
| IB_WC_WITH_SMAC = (1<<4), |
| IB_WC_WITH_VLAN = (1<<5), |
| IB_WC_WITH_NETWORK_HDR_TYPE = (1<<6), |
| }; |
| |
| struct ib_wc { |
| union { |
| u64 wr_id; |
| struct ib_cqe *wr_cqe; |
| }; |
| enum ib_wc_status status; |
| enum ib_wc_opcode opcode; |
| u32 vendor_err; |
| u32 byte_len; |
| struct ib_qp *qp; |
| union { |
| __be32 imm_data; |
| u32 invalidate_rkey; |
| } ex; |
| u32 src_qp; |
| int wc_flags; |
| u16 pkey_index; |
| u32 slid; |
| u8 sl; |
| u8 dlid_path_bits; |
| u8 port_num; /* valid only for DR SMPs on switches */ |
| u8 smac[ETH_ALEN]; |
| u16 vlan_id; |
| u8 network_hdr_type; |
| }; |
| |
| enum ib_cq_notify_flags { |
| IB_CQ_SOLICITED = 1 << 0, |
| IB_CQ_NEXT_COMP = 1 << 1, |
| IB_CQ_SOLICITED_MASK = IB_CQ_SOLICITED | IB_CQ_NEXT_COMP, |
| IB_CQ_REPORT_MISSED_EVENTS = 1 << 2, |
| }; |
| |
| enum ib_srq_type { |
| IB_SRQT_BASIC, |
| IB_SRQT_XRC, |
| IB_SRQT_TM, |
| }; |
| |
| static inline bool ib_srq_has_cq(enum ib_srq_type srq_type) |
| { |
| return srq_type == IB_SRQT_XRC || |
| srq_type == IB_SRQT_TM; |
| } |
| |
| enum ib_srq_attr_mask { |
| IB_SRQ_MAX_WR = 1 << 0, |
| IB_SRQ_LIMIT = 1 << 1, |
| }; |
| |
| struct ib_srq_attr { |
| u32 max_wr; |
| u32 max_sge; |
| u32 srq_limit; |
| }; |
| |
| struct ib_srq_init_attr { |
| void (*event_handler)(struct ib_event *, void *); |
| void *srq_context; |
| struct ib_srq_attr attr; |
| enum ib_srq_type srq_type; |
| |
| struct { |
| struct ib_cq *cq; |
| union { |
| struct { |
| struct ib_xrcd *xrcd; |
| } xrc; |
| |
| struct { |
| u32 max_num_tags; |
| } tag_matching; |
| }; |
| } ext; |
| }; |
| |
| struct ib_qp_cap { |
| u32 max_send_wr; |
| u32 max_recv_wr; |
| u32 max_send_sge; |
| u32 max_recv_sge; |
| u32 max_inline_data; |
| |
| /* |
| * Maximum number of rdma_rw_ctx structures in flight at a time. |
| * ib_create_qp() will calculate the right amount of neededed WRs |
| * and MRs based on this. |
| */ |
| u32 max_rdma_ctxs; |
| }; |
| |
| enum ib_sig_type { |
| IB_SIGNAL_ALL_WR, |
| IB_SIGNAL_REQ_WR |
| }; |
| |
| enum ib_qp_type { |
| /* |
| * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries |
| * here (and in that order) since the MAD layer uses them as |
| * indices into a 2-entry table. |
| */ |
| IB_QPT_SMI, |
| IB_QPT_GSI, |
| |
| IB_QPT_RC, |
| IB_QPT_UC, |
| IB_QPT_UD, |
| IB_QPT_RAW_IPV6, |
| IB_QPT_RAW_ETHERTYPE, |
| IB_QPT_RAW_PACKET = 8, |
| IB_QPT_XRC_INI = 9, |
| IB_QPT_XRC_TGT, |
| IB_QPT_MAX, |
| /* Reserve a range for qp types internal to the low level driver. |
| * These qp types will not be visible at the IB core layer, so the |
| * IB_QPT_MAX usages should not be affected in the core layer |
| */ |
| IB_QPT_RESERVED1 = 0x1000, |
| IB_QPT_RESERVED2, |
| IB_QPT_RESERVED3, |
| IB_QPT_RESERVED4, |
| IB_QPT_RESERVED5, |
| IB_QPT_RESERVED6, |
| IB_QPT_RESERVED7, |
| IB_QPT_RESERVED8, |
| IB_QPT_RESERVED9, |
| IB_QPT_RESERVED10, |
| }; |
| |
| enum ib_qp_create_flags { |
| IB_QP_CREATE_IPOIB_UD_LSO = 1 << 0, |
| IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK = 1 << 1, |
| IB_QP_CREATE_CROSS_CHANNEL = 1 << 2, |
| IB_QP_CREATE_MANAGED_SEND = 1 << 3, |
| IB_QP_CREATE_MANAGED_RECV = 1 << 4, |
| IB_QP_CREATE_NETIF_QP = 1 << 5, |
| IB_QP_CREATE_SIGNATURE_EN = 1 << 6, |
| /* FREE = 1 << 7, */ |
| IB_QP_CREATE_SCATTER_FCS = 1 << 8, |
| IB_QP_CREATE_CVLAN_STRIPPING = 1 << 9, |
| IB_QP_CREATE_SOURCE_QPN = 1 << 10, |
| /* reserve bits 26-31 for low level drivers' internal use */ |
| IB_QP_CREATE_RESERVED_START = 1 << 26, |
| IB_QP_CREATE_RESERVED_END = 1 << 31, |
| }; |
| |
| /* |
| * Note: users may not call ib_close_qp or ib_destroy_qp from the event_handler |
| * callback to destroy the passed in QP. |
| */ |
| |
| struct ib_qp_init_attr { |
| void (*event_handler)(struct ib_event *, void *); |
| void *qp_context; |
| struct ib_cq *send_cq; |
| struct ib_cq *recv_cq; |
| struct ib_srq *srq; |
| struct ib_xrcd *xrcd; /* XRC TGT QPs only */ |
| struct ib_qp_cap cap; |
| enum ib_sig_type sq_sig_type; |
| enum ib_qp_type qp_type; |
| enum ib_qp_create_flags create_flags; |
| |
| /* |
| * Only needed for special QP types, or when using the RW API. |
| */ |
| u8 port_num; |
| struct ib_rwq_ind_table *rwq_ind_tbl; |
| u32 source_qpn; |
| }; |
| |
| struct ib_qp_open_attr { |
| void (*event_handler)(struct ib_event *, void *); |
| void *qp_context; |
| u32 qp_num; |
| enum ib_qp_type qp_type; |
| }; |
| |
| enum ib_rnr_timeout { |
| IB_RNR_TIMER_655_36 = 0, |
| IB_RNR_TIMER_000_01 = 1, |
| IB_RNR_TIMER_000_02 = 2, |
| IB_RNR_TIMER_000_03 = 3, |
| IB_RNR_TIMER_000_04 = 4, |
| IB_RNR_TIMER_000_06 = 5, |
| IB_RNR_TIMER_000_08 = 6, |
| IB_RNR_TIMER_000_12 = 7, |
| IB_RNR_TIMER_000_16 = 8, |
| IB_RNR_TIMER_000_24 = 9, |
| IB_RNR_TIMER_000_32 = 10, |
| IB_RNR_TIMER_000_48 = 11, |
| IB_RNR_TIMER_000_64 = 12, |
| IB_RNR_TIMER_000_96 = 13, |
| IB_RNR_TIMER_001_28 = 14, |
| IB_RNR_TIMER_001_92 = 15, |
| IB_RNR_TIMER_002_56 = 16, |
| IB_RNR_TIMER_003_84 = 17, |
| IB_RNR_TIMER_005_12 = 18, |
| IB_RNR_TIMER_007_68 = 19, |
| IB_RNR_TIMER_010_24 = 20, |
| IB_RNR_TIMER_015_36 = 21, |
| IB_RNR_TIMER_020_48 = 22, |
| IB_RNR_TIMER_030_72 = 23, |
| IB_RNR_TIMER_040_96 = 24, |
| IB_RNR_TIMER_061_44 = 25, |
| IB_RNR_TIMER_081_92 = 26, |
| IB_RNR_TIMER_122_88 = 27, |
| IB_RNR_TIMER_163_84 = 28, |
| IB_RNR_TIMER_245_76 = 29, |
| IB_RNR_TIMER_327_68 = 30, |
| IB_RNR_TIMER_491_52 = 31 |
| }; |
| |
| enum ib_qp_attr_mask { |
| IB_QP_STATE = 1, |
| IB_QP_CUR_STATE = (1<<1), |
| IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2), |
| IB_QP_ACCESS_FLAGS = (1<<3), |
| IB_QP_PKEY_INDEX = (1<<4), |
| IB_QP_PORT = (1<<5), |
| IB_QP_QKEY = (1<<6), |
| IB_QP_AV = (1<<7), |
| IB_QP_PATH_MTU = (1<<8), |
| IB_QP_TIMEOUT = (1<<9), |
| IB_QP_RETRY_CNT = (1<<10), |
| IB_QP_RNR_RETRY = (1<<11), |
| IB_QP_RQ_PSN = (1<<12), |
| IB_QP_MAX_QP_RD_ATOMIC = (1<<13), |
| IB_QP_ALT_PATH = (1<<14), |
| IB_QP_MIN_RNR_TIMER = (1<<15), |
| IB_QP_SQ_PSN = (1<<16), |
| IB_QP_MAX_DEST_RD_ATOMIC = (1<<17), |
| IB_QP_PATH_MIG_STATE = (1<<18), |
| IB_QP_CAP = (1<<19), |
| IB_QP_DEST_QPN = (1<<20), |
| IB_QP_RESERVED1 = (1<<21), |
| IB_QP_RESERVED2 = (1<<22), |
| IB_QP_RESERVED3 = (1<<23), |
| IB_QP_RESERVED4 = (1<<24), |
| IB_QP_RATE_LIMIT = (1<<25), |
| }; |
| |
| enum ib_qp_state { |
| IB_QPS_RESET, |
| IB_QPS_INIT, |
| IB_QPS_RTR, |
| IB_QPS_RTS, |
| IB_QPS_SQD, |
| IB_QPS_SQE, |
| IB_QPS_ERR |
| }; |
| |
| enum ib_mig_state { |
| IB_MIG_MIGRATED, |
| IB_MIG_REARM, |
| IB_MIG_ARMED |
| }; |
| |
| enum ib_mw_type { |
| IB_MW_TYPE_1 = 1, |
| IB_MW_TYPE_2 = 2 |
| }; |
| |
| struct ib_qp_attr { |
| enum ib_qp_state qp_state; |
| enum ib_qp_state cur_qp_state; |
| enum ib_mtu path_mtu; |
| enum ib_mig_state path_mig_state; |
| u32 qkey; |
| u32 rq_psn; |
| u32 sq_psn; |
| u32 dest_qp_num; |
| int qp_access_flags; |
| struct ib_qp_cap cap; |
| struct rdma_ah_attr ah_attr; |
| struct rdma_ah_attr alt_ah_attr; |
| u16 pkey_index; |
| u16 alt_pkey_index; |
| u8 en_sqd_async_notify; |
| u8 sq_draining; |
| u8 max_rd_atomic; |
| u8 max_dest_rd_atomic; |
| u8 min_rnr_timer; |
| u8 port_num; |
| u8 timeout; |
| u8 retry_cnt; |
| u8 rnr_retry; |
| u8 alt_port_num; |
| u8 alt_timeout; |
| u32 rate_limit; |
| }; |
| |
| enum ib_wr_opcode { |
| IB_WR_RDMA_WRITE, |
| IB_WR_RDMA_WRITE_WITH_IMM, |
| IB_WR_SEND, |
| IB_WR_SEND_WITH_IMM, |
| IB_WR_RDMA_READ, |
| IB_WR_ATOMIC_CMP_AND_SWP, |
| IB_WR_ATOMIC_FETCH_AND_ADD, |
| IB_WR_LSO, |
| IB_WR_SEND_WITH_INV, |
| IB_WR_RDMA_READ_WITH_INV, |
| IB_WR_LOCAL_INV, |
| IB_WR_REG_MR, |
| IB_WR_MASKED_ATOMIC_CMP_AND_SWP, |
| IB_WR_MASKED_ATOMIC_FETCH_AND_ADD, |
| IB_WR_REG_SIG_MR, |
| /* reserve values for low level drivers' internal use. |
| * These values will not be used at all in the ib core layer. |
| */ |
| IB_WR_RESERVED1 = 0xf0, |
| IB_WR_RESERVED2, |
| IB_WR_RESERVED3, |
| IB_WR_RESERVED4, |
| IB_WR_RESERVED5, |
| IB_WR_RESERVED6, |
| IB_WR_RESERVED7, |
| IB_WR_RESERVED8, |
| IB_WR_RESERVED9, |
| IB_WR_RESERVED10, |
| }; |
| |
| enum ib_send_flags { |
| IB_SEND_FENCE = 1, |
| IB_SEND_SIGNALED = (1<<1), |
| IB_SEND_SOLICITED = (1<<2), |
| IB_SEND_INLINE = (1<<3), |
| IB_SEND_IP_CSUM = (1<<4), |
| |
| /* reserve bits 26-31 for low level drivers' internal use */ |
| IB_SEND_RESERVED_START = (1 << 26), |
| IB_SEND_RESERVED_END = (1 << 31), |
| }; |
| |
| struct ib_sge { |
| u64 addr; |
| u32 length; |
| u32 lkey; |
| }; |
| |
| struct ib_cqe { |
| void (*done)(struct ib_cq *cq, struct ib_wc *wc); |
| }; |
| |
| struct ib_send_wr { |
| struct ib_send_wr *next; |
| union { |
| u64 wr_id; |
| struct ib_cqe *wr_cqe; |
| }; |
| struct ib_sge *sg_list; |
| int num_sge; |
| enum ib_wr_opcode opcode; |
| int send_flags; |
| union { |
| __be32 imm_data; |
| u32 invalidate_rkey; |
| } ex; |
| }; |
| |
| struct ib_rdma_wr { |
| struct ib_send_wr wr; |
| u64 remote_addr; |
| u32 rkey; |
| }; |
| |
| static inline struct ib_rdma_wr *rdma_wr(struct ib_send_wr *wr) |
| { |
| return container_of(wr, struct ib_rdma_wr, wr); |
| } |
| |
| struct ib_atomic_wr { |
| struct ib_send_wr wr; |
| u64 remote_addr; |
| u64 compare_add; |
| u64 swap; |
| u64 compare_add_mask; |
| u64 swap_mask; |
| u32 rkey; |
| }; |
| |
| static inline struct ib_atomic_wr *atomic_wr(struct ib_send_wr *wr) |
| { |
| return container_of(wr, struct ib_atomic_wr, wr); |
| } |
| |
| struct ib_ud_wr { |
| struct ib_send_wr wr; |
| struct ib_ah *ah; |
| void *header; |
| int hlen; |
| int mss; |
| u32 remote_qpn; |
| u32 remote_qkey; |
| u16 pkey_index; /* valid for GSI only */ |
| u8 port_num; /* valid for DR SMPs on switch only */ |
| }; |
| |
| static inline struct ib_ud_wr *ud_wr(struct ib_send_wr *wr) |
| { |
| return container_of(wr, struct ib_ud_wr, wr); |
| } |
| |
| struct ib_reg_wr { |
| struct ib_send_wr wr; |
| struct ib_mr *mr; |
| u32 key; |
| int access; |
| }; |
| |
| static inline struct ib_reg_wr *reg_wr(struct ib_send_wr *wr) |
| { |
| return container_of(wr, struct ib_reg_wr, wr); |
| } |
| |
| struct ib_sig_handover_wr { |
| struct ib_send_wr wr; |
| struct ib_sig_attrs *sig_attrs; |
| struct ib_mr *sig_mr; |
| int access_flags; |
| struct ib_sge *prot; |
| }; |
| |
| static inline struct ib_sig_handover_wr *sig_handover_wr(struct ib_send_wr *wr) |
| { |
| return container_of(wr, struct ib_sig_handover_wr, wr); |
| } |
| |
| struct ib_recv_wr { |
| struct ib_recv_wr *next; |
| union { |
| u64 wr_id; |
| struct ib_cqe *wr_cqe; |
| }; |
| struct ib_sge *sg_list; |
| int num_sge; |
| }; |
| |
| enum ib_access_flags { |
| IB_ACCESS_LOCAL_WRITE = 1, |
| IB_ACCESS_REMOTE_WRITE = (1<<1), |
| IB_ACCESS_REMOTE_READ = (1<<2), |
| IB_ACCESS_REMOTE_ATOMIC = (1<<3), |
| IB_ACCESS_MW_BIND = (1<<4), |
| IB_ZERO_BASED = (1<<5), |
| IB_ACCESS_ON_DEMAND = (1<<6), |
| IB_ACCESS_HUGETLB = (1<<7), |
| }; |
| |
| /* |
| * XXX: these are apparently used for ->rereg_user_mr, no idea why they |
| * are hidden here instead of a uapi header! |
| */ |
| enum ib_mr_rereg_flags { |
| IB_MR_REREG_TRANS = 1, |
| IB_MR_REREG_PD = (1<<1), |
| IB_MR_REREG_ACCESS = (1<<2), |
| IB_MR_REREG_SUPPORTED = ((IB_MR_REREG_ACCESS << 1) - 1) |
| }; |
| |
| struct ib_fmr_attr { |
| int max_pages; |
| int max_maps; |
| u8 page_shift; |
| }; |
| |
| struct ib_umem; |
| |
| enum rdma_remove_reason { |
| /* Userspace requested uobject deletion. Call could fail */ |
| RDMA_REMOVE_DESTROY, |
| /* Context deletion. This call should delete the actual object itself */ |
| RDMA_REMOVE_CLOSE, |
| /* Driver is being hot-unplugged. This call should delete the actual object itself */ |
| RDMA_REMOVE_DRIVER_REMOVE, |
| /* Context is being cleaned-up, but commit was just completed */ |
| RDMA_REMOVE_DURING_CLEANUP, |
| }; |
| |
| struct ib_rdmacg_object { |
| #ifdef CONFIG_CGROUP_RDMA |
| struct rdma_cgroup *cg; /* owner rdma cgroup */ |
| #endif |
| }; |
| |
| struct ib_ucontext { |
| struct ib_device *device; |
| struct ib_uverbs_file *ufile; |
| int closing; |
| |
| /* locking the uobjects_list */ |
| struct mutex uobjects_lock; |
| struct list_head uobjects; |
| /* protects cleanup process from other actions */ |
| struct rw_semaphore cleanup_rwsem; |
| enum rdma_remove_reason cleanup_reason; |
| |
| struct pid *tgid; |
| #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING |
| struct rb_root_cached umem_tree; |
| /* |
| * Protects .umem_rbroot and tree, as well as odp_mrs_count and |
| * mmu notifiers registration. |
| */ |
| struct rw_semaphore umem_rwsem; |
| void (*invalidate_range)(struct ib_umem *umem, |
| unsigned long start, unsigned long end); |
| |
| struct mmu_notifier mn; |
| atomic_t notifier_count; |
| /* A list of umems that don't have private mmu notifier counters yet. */ |
| struct list_head no_private_counters; |
| int odp_mrs_count; |
| #endif |
| |
| struct ib_rdmacg_object cg_obj; |
| }; |
| |
| struct ib_uobject { |
| u64 user_handle; /* handle given to us by userspace */ |
| struct ib_ucontext *context; /* associated user context */ |
| void *object; /* containing object */ |
| struct list_head list; /* link to context's list */ |
| struct ib_rdmacg_object cg_obj; /* rdmacg object */ |
| int id; /* index into kernel idr */ |
| struct kref ref; |
| atomic_t usecnt; /* protects exclusive access */ |
| struct rcu_head rcu; /* kfree_rcu() overhead */ |
| |
| const struct uverbs_obj_type *type; |
| }; |
| |
| struct ib_uobject_file { |
| struct ib_uobject uobj; |
| /* ufile contains the lock between context release and file close */ |
| struct ib_uverbs_file *ufile; |
| }; |
| |
| struct ib_udata { |
| const void __user *inbuf; |
| void __user *outbuf; |
| size_t inlen; |
| size_t outlen; |
| }; |
| |
| struct ib_pd { |
| u32 local_dma_lkey; |
| u32 flags; |
| struct ib_device *device; |
| struct ib_uobject *uobject; |
| atomic_t usecnt; /* count all resources */ |
| |
| u32 unsafe_global_rkey; |
| |
| /* |
| * Implementation details of the RDMA core, don't use in drivers: |
| */ |
| struct ib_mr *__internal_mr; |
| }; |
| |
| struct ib_xrcd { |
| struct ib_device *device; |
| atomic_t usecnt; /* count all exposed resources */ |
| struct inode *inode; |
| |
| struct mutex tgt_qp_mutex; |
| struct list_head tgt_qp_list; |
| }; |
| |
| struct ib_ah { |
| struct ib_device *device; |
| struct ib_pd *pd; |
| struct ib_uobject *uobject; |
| enum rdma_ah_attr_type type; |
| }; |
| |
| typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context); |
| |
| enum ib_poll_context { |
| IB_POLL_DIRECT, /* caller context, no hw completions */ |
| IB_POLL_SOFTIRQ, /* poll from softirq context */ |
| IB_POLL_WORKQUEUE, /* poll from workqueue */ |
| }; |
| |
| struct ib_cq { |
| struct ib_device *device; |
| struct ib_uobject *uobject; |
| ib_comp_handler comp_handler; |
| void (*event_handler)(struct ib_event *, void *); |
| void *cq_context; |
| int cqe; |
| atomic_t usecnt; /* count number of work queues */ |
| enum ib_poll_context poll_ctx; |
| struct ib_wc *wc; |
| union { |
| struct irq_poll iop; |
| struct work_struct work; |
| }; |
| }; |
| |
| struct ib_srq { |
| struct ib_device *device; |
| struct ib_pd *pd; |
| struct ib_uobject *uobject; |
| void (*event_handler)(struct ib_event *, void *); |
| void *srq_context; |
| enum ib_srq_type srq_type; |
| atomic_t usecnt; |
| |
| struct { |
| struct ib_cq *cq; |
| union { |
| struct { |
| struct ib_xrcd *xrcd; |
| u32 srq_num; |
| } xrc; |
| }; |
| } ext; |
| }; |
| |
| enum ib_raw_packet_caps { |
| /* Strip cvlan from incoming packet and report it in the matching work |
| * completion is supported. |
| */ |
| IB_RAW_PACKET_CAP_CVLAN_STRIPPING = (1 << 0), |
| /* Scatter FCS field of an incoming packet to host memory is supported. |
| */ |
| IB_RAW_PACKET_CAP_SCATTER_FCS = (1 << 1), |
| /* Checksum offloads are supported (for both send and receive). */ |
| IB_RAW_PACKET_CAP_IP_CSUM = (1 << 2), |
| /* When a packet is received for an RQ with no receive WQEs, the |
| * packet processing is delayed. |
| */ |
| IB_RAW_PACKET_CAP_DELAY_DROP = (1 << 3), |
| }; |
| |
| enum ib_wq_type { |
| IB_WQT_RQ |
| }; |
| |
| enum ib_wq_state { |
| IB_WQS_RESET, |
| IB_WQS_RDY, |
| IB_WQS_ERR |
| }; |
| |
| struct ib_wq { |
| struct ib_device *device; |
| struct ib_uobject *uobject; |
| void *wq_context; |
| void (*event_handler)(struct ib_event *, void *); |
| struct ib_pd *pd; |
| struct ib_cq *cq; |
| u32 wq_num; |
| enum ib_wq_state state; |
| enum ib_wq_type wq_type; |
| atomic_t usecnt; |
| }; |
| |
| enum ib_wq_flags { |
| IB_WQ_FLAGS_CVLAN_STRIPPING = 1 << 0, |
| IB_WQ_FLAGS_SCATTER_FCS = 1 << 1, |
| IB_WQ_FLAGS_DELAY_DROP = 1 << 2, |
| }; |
| |
| struct ib_wq_init_attr { |
| void *wq_context; |
| enum ib_wq_type wq_type; |
| u32 max_wr; |
| u32 max_sge; |
| struct ib_cq *cq; |
| void (*event_handler)(struct ib_event *, void *); |
| u32 create_flags; /* Use enum ib_wq_flags */ |
| }; |
| |
| enum ib_wq_attr_mask { |
| IB_WQ_STATE = 1 << 0, |
| IB_WQ_CUR_STATE = 1 << 1, |
| IB_WQ_FLAGS = 1 << 2, |
| }; |
| |
| struct ib_wq_attr { |
| enum ib_wq_state wq_state; |
| enum ib_wq_state curr_wq_state; |
| u32 flags; /* Use enum ib_wq_flags */ |
| u32 flags_mask; /* Use enum ib_wq_flags */ |
| }; |
| |
| struct ib_rwq_ind_table { |
| struct ib_device *device; |
| struct ib_uobject *uobject; |
| atomic_t usecnt; |
| u32 ind_tbl_num; |
| u32 log_ind_tbl_size; |
| struct ib_wq **ind_tbl; |
| }; |
| |
| struct ib_rwq_ind_table_init_attr { |
| u32 log_ind_tbl_size; |
| /* Each entry is a pointer to Receive Work Queue */ |
| struct ib_wq **ind_tbl; |
| }; |
| |
| enum port_pkey_state { |
| IB_PORT_PKEY_NOT_VALID = 0, |
| IB_PORT_PKEY_VALID = 1, |
| IB_PORT_PKEY_LISTED = 2, |
| }; |
| |
| struct ib_qp_security; |
| |
| struct ib_port_pkey { |
| enum port_pkey_state state; |
| u16 pkey_index; |
| u8 port_num; |
| struct list_head qp_list; |
| struct list_head to_error_list; |
| struct ib_qp_security *sec; |
| }; |
| |
| struct ib_ports_pkeys { |
| struct ib_port_pkey main; |
| struct ib_port_pkey alt; |
| }; |
| |
| struct ib_qp_security { |
| struct ib_qp *qp; |
| struct ib_device *dev; |
| /* Hold this mutex when changing port and pkey settings. */ |
| struct mutex mutex; |
| struct ib_ports_pkeys *ports_pkeys; |
| /* A list of all open shared QP handles. Required to enforce security |
| * properly for all users of a shared QP. |
| */ |
| struct list_head shared_qp_list; |
| void *security; |
| bool destroying; |
| atomic_t error_list_count; |
| struct completion error_complete; |
| int error_comps_pending; |
| }; |
| |
| /* |
| * @max_write_sge: Maximum SGE elements per RDMA WRITE request. |
| * @max_read_sge: Maximum SGE elements per RDMA READ request. |
| */ |
| struct ib_qp { |
| struct ib_device *device; |
| struct ib_pd *pd; |
| struct ib_cq *send_cq; |
| struct ib_cq *recv_cq; |
| spinlock_t mr_lock; |
| int mrs_used; |
| struct list_head rdma_mrs; |
| struct list_head sig_mrs; |
| struct ib_srq *srq; |
| struct ib_xrcd *xrcd; /* XRC TGT QPs only */ |
| struct list_head xrcd_list; |
| |
| /* count times opened, mcast attaches, flow attaches */ |
| atomic_t usecnt; |
| struct list_head open_list; |
| struct ib_qp *real_qp; |
| struct ib_uobject *uobject; |
| void (*event_handler)(struct ib_event *, void *); |
| void *qp_context; |
| u32 qp_num; |
| u32 max_write_sge; |
| u32 max_read_sge; |
| enum ib_qp_type qp_type; |
| struct ib_rwq_ind_table *rwq_ind_tbl; |
| struct ib_qp_security *qp_sec; |
| u8 port; |
| }; |
| |
| struct ib_mr { |
| struct ib_device *device; |
| struct ib_pd *pd; |
| u32 lkey; |
| u32 rkey; |
| u64 iova; |
| u64 length; |
| unsigned int page_size; |
| bool need_inval; |
| union { |
| struct ib_uobject *uobject; /* user */ |
| struct list_head qp_entry; /* FR */ |
| }; |
| }; |
| |
| struct ib_mw { |
| struct ib_device *device; |
| struct ib_pd *pd; |
| struct ib_uobject *uobject; |
| u32 rkey; |
| enum ib_mw_type type; |
| }; |
| |
| struct ib_fmr { |
| struct ib_device *device; |
| struct ib_pd *pd; |
| struct list_head list; |
| u32 lkey; |
| u32 rkey; |
| }; |
| |
| /* Supported steering options */ |
| enum ib_flow_attr_type { |
| /* steering according to rule specifications */ |
| IB_FLOW_ATTR_NORMAL = 0x0, |
| /* default unicast and multicast rule - |
| * receive all Eth traffic which isn't steered to any QP |
| */ |
| IB_FLOW_ATTR_ALL_DEFAULT = 0x1, |
| /* default multicast rule - |
| * receive all Eth multicast traffic which isn't steered to any QP |
| */ |
| IB_FLOW_ATTR_MC_DEFAULT = 0x2, |
| /* sniffer rule - receive all port traffic */ |
| IB_FLOW_ATTR_SNIFFER = 0x3 |
| }; |
| |
| /* Supported steering header types */ |
| enum ib_flow_spec_type { |
| /* L2 headers*/ |
| IB_FLOW_SPEC_ETH = 0x20, |
| IB_FLOW_SPEC_IB = 0x22, |
| /* L3 header*/ |
| IB_FLOW_SPEC_IPV4 = 0x30, |
| IB_FLOW_SPEC_IPV6 = 0x31, |
| /* L4 headers*/ |
| IB_FLOW_SPEC_TCP = 0x40, |
| IB_FLOW_SPEC_UDP = 0x41, |
| IB_FLOW_SPEC_VXLAN_TUNNEL = 0x50, |
| IB_FLOW_SPEC_INNER = 0x100, |
| /* Actions */ |
| IB_FLOW_SPEC_ACTION_TAG = 0x1000, |
| IB_FLOW_SPEC_ACTION_DROP = 0x1001, |
| }; |
| #define IB_FLOW_SPEC_LAYER_MASK 0xF0 |
| #define IB_FLOW_SPEC_SUPPORT_LAYERS 8 |
| |
| /* Flow steering rule priority is set according to it's domain. |
| * Lower domain value means higher priority. |
| */ |
| enum ib_flow_domain { |
| IB_FLOW_DOMAIN_USER, |
| IB_FLOW_DOMAIN_ETHTOOL, |
| IB_FLOW_DOMAIN_RFS, |
| IB_FLOW_DOMAIN_NIC, |
| IB_FLOW_DOMAIN_NUM /* Must be last */ |
| }; |
| |
| enum ib_flow_flags { |
| IB_FLOW_ATTR_FLAGS_DONT_TRAP = 1UL << 1, /* Continue match, no steal */ |
| IB_FLOW_ATTR_FLAGS_RESERVED = 1UL << 2 /* Must be last */ |
| }; |
| |
| struct ib_flow_eth_filter { |
| u8 dst_mac[6]; |
| u8 src_mac[6]; |
| __be16 ether_type; |
| __be16 vlan_tag; |
| /* Must be last */ |
| u8 real_sz[0]; |
| }; |
| |
| struct ib_flow_spec_eth { |
| u32 type; |
| u16 size; |
| struct ib_flow_eth_filter val; |
| struct ib_flow_eth_filter mask; |
| }; |
| |
| struct ib_flow_ib_filter { |
| __be16 dlid; |
| __u8 sl; |
| /* Must be last */ |
| u8 real_sz[0]; |
| }; |
| |
| struct ib_flow_spec_ib { |
| u32 type; |
| u16 size; |
| struct ib_flow_ib_filter val; |
| struct ib_flow_ib_filter mask; |
| }; |
| |
| /* IPv4 header flags */ |
| enum ib_ipv4_flags { |
| IB_IPV4_DONT_FRAG = 0x2, /* Don't enable packet fragmentation */ |
| IB_IPV4_MORE_FRAG = 0X4 /* For All fragmented packets except the |
| last have this flag set */ |
| }; |
| |
| struct ib_flow_ipv4_filter { |
| __be32 src_ip; |
| __be32 dst_ip; |
| u8 proto; |
| u8 tos; |
| u8 ttl; |
| u8 flags; |
| /* Must be last */ |
| u8 real_sz[0]; |
| }; |
| |
| struct ib_flow_spec_ipv4 { |
| u32 type; |
| u16 size; |
| struct ib_flow_ipv4_filter val; |
| struct ib_flow_ipv4_filter mask; |
| }; |
| |
| struct ib_flow_ipv6_filter { |
| u8 src_ip[16]; |
| u8 dst_ip[16]; |
| __be32 flow_label; |
| u8 next_hdr; |
| u8 traffic_class; |
| u8 hop_limit; |
| /* Must be last */ |
| u8 real_sz[0]; |
| }; |
| |
| struct ib_flow_spec_ipv6 { |
| u32 type; |
| u16 size; |
| struct ib_flow_ipv6_filter val; |
| struct ib_flow_ipv6_filter mask; |
| }; |
| |
| struct ib_flow_tcp_udp_filter { |
| __be16 dst_port; |
| __be16 src_port; |
| /* Must be last */ |
| u8 real_sz[0]; |
| }; |
| |
| struct ib_flow_spec_tcp_udp { |
| u32 type; |
| u16 size; |
| struct ib_flow_tcp_udp_filter val; |
| struct ib_flow_tcp_udp_filter mask; |
| }; |
| |
| struct ib_flow_tunnel_filter { |
| __be32 tunnel_id; |
| u8 real_sz[0]; |
| }; |
| |
| /* ib_flow_spec_tunnel describes the Vxlan tunnel |
| * the tunnel_id from val has the vni value |
| */ |
| struct ib_flow_spec_tunnel { |
| u32 type; |
| u16 size; |
| struct ib_flow_tunnel_filter val; |
| struct ib_flow_tunnel_filter mask; |
| }; |
| |
| struct ib_flow_spec_action_tag { |
| enum ib_flow_spec_type type; |
| u16 size; |
| u32 tag_id; |
| }; |
| |
| struct ib_flow_spec_action_drop { |
| enum ib_flow_spec_type type; |
| u16 size; |
| }; |
| |
| union ib_flow_spec { |
| struct { |
| u32 type; |
| u16 size; |
| }; |
| struct ib_flow_spec_eth eth; |
| struct ib_flow_spec_ib ib; |
| struct ib_flow_spec_ipv4 ipv4; |
| struct ib_flow_spec_tcp_udp tcp_udp; |
| struct ib_flow_spec_ipv6 ipv6; |
| struct ib_flow_spec_tunnel tunnel; |
| struct ib_flow_spec_action_tag flow_tag; |
| struct ib_flow_spec_action_drop drop; |
| }; |
| |
| struct ib_flow_attr { |
| enum ib_flow_attr_type type; |
| u16 size; |
| u16 priority; |
| u32 flags; |
| u8 num_of_specs; |
| u8 port; |
| /* Following are the optional layers according to user request |
| * struct ib_flow_spec_xxx |
| * struct ib_flow_spec_yyy |
| */ |
| }; |
| |
| struct ib_flow { |
| struct ib_qp *qp; |
| struct ib_uobject *uobject; |
| }; |
| |
| struct ib_mad_hdr; |
| struct ib_grh; |
| |
| enum ib_process_mad_flags { |
| IB_MAD_IGNORE_MKEY = 1, |
| IB_MAD_IGNORE_BKEY = 2, |
| IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY |
| }; |
| |
| enum ib_mad_result { |
| IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */ |
| IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */ |
| IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */ |
| IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */ |
| }; |
| |
| struct ib_port_cache { |
| u64 subnet_prefix; |
| struct ib_pkey_cache *pkey; |
| struct ib_gid_table *gid; |
| u8 lmc; |
| enum ib_port_state port_state; |
| }; |
| |
| struct ib_cache { |
| rwlock_t lock; |
| struct ib_event_handler event_handler; |
| struct ib_port_cache *ports; |
| }; |
| |
| struct iw_cm_verbs; |
| |
| struct ib_port_immutable { |
| int pkey_tbl_len; |
| int gid_tbl_len; |
| u32 core_cap_flags; |
| u32 max_mad_size; |
| }; |
| |
| /* rdma netdev type - specifies protocol type */ |
| enum rdma_netdev_t { |
| RDMA_NETDEV_OPA_VNIC, |
| RDMA_NETDEV_IPOIB, |
| }; |
| |
| /** |
| * struct rdma_netdev - rdma netdev |
| * For cases where netstack interfacing is required. |
| */ |
| struct rdma_netdev { |
| void *clnt_priv; |
| struct ib_device *hca; |
| u8 port_num; |
| |
| /* cleanup function must be specified */ |
| void (*free_rdma_netdev)(struct net_device *netdev); |
| |
| /* control functions */ |
| void (*set_id)(struct net_device *netdev, int id); |
| /* send packet */ |
| int (*send)(struct net_device *dev, struct sk_buff *skb, |
| struct ib_ah *address, u32 dqpn); |
| /* multicast */ |
| int (*attach_mcast)(struct net_device *dev, struct ib_device *hca, |
| union ib_gid *gid, u16 mlid, |
| int set_qkey, u32 qkey); |
| int (*detach_mcast)(struct net_device *dev, struct ib_device *hca, |
| union ib_gid *gid, u16 mlid); |
| }; |
| |
| struct ib_port_pkey_list { |
| /* Lock to hold while modifying the list. */ |
| spinlock_t list_lock; |
| struct list_head pkey_list; |
| }; |
| |
| struct ib_device { |
| /* Do not access @dma_device directly from ULP nor from HW drivers. */ |
| struct device *dma_device; |
| |
| char name[IB_DEVICE_NAME_MAX]; |
| |
| struct list_head event_handler_list; |
| spinlock_t event_handler_lock; |
| |
| spinlock_t client_data_lock; |
| struct list_head core_list; |
| /* Access to the client_data_list is protected by the client_data_lock |
| * spinlock and the lists_rwsem read-write semaphore */ |
| struct list_head client_data_list; |
| |
| struct ib_cache cache; |
| /** |
| * port_immutable is indexed by port number |
| */ |
| struct ib_port_immutable *port_immutable; |
| |
| int num_comp_vectors; |
| |
| struct ib_port_pkey_list *port_pkey_list; |
| |
| struct iw_cm_verbs *iwcm; |
| |
| /** |
| * alloc_hw_stats - Allocate a struct rdma_hw_stats and fill in the |
| * driver initialized data. The struct is kfree()'ed by the sysfs |
| * core when the device is removed. A lifespan of -1 in the return |
| * struct tells the core to set a default lifespan. |
| */ |
| struct rdma_hw_stats *(*alloc_hw_stats)(struct ib_device *device, |
| u8 port_num); |
| /** |
| * get_hw_stats - Fill in the counter value(s) in the stats struct. |
| * @index - The index in the value array we wish to have updated, or |
| * num_counters if we want all stats updated |
| * Return codes - |
| * < 0 - Error, no counters updated |
| * index - Updated the single counter pointed to by index |
| * num_counters - Updated all counters (will reset the timestamp |
| * and prevent further calls for lifespan milliseconds) |
| * Drivers are allowed to update all counters in leiu of just the |
| * one given in index at their option |
| */ |
| int (*get_hw_stats)(struct ib_device *device, |
| struct rdma_hw_stats *stats, |
| u8 port, int index); |
| int (*query_device)(struct ib_device *device, |
| struct ib_device_attr *device_attr, |
| struct ib_udata *udata); |
| int (*query_port)(struct ib_device *device, |
| u8 port_num, |
| struct ib_port_attr *port_attr); |
| enum rdma_link_layer (*get_link_layer)(struct ib_device *device, |
| u8 port_num); |
| /* When calling get_netdev, the HW vendor's driver should return the |
| * net device of device @device at port @port_num or NULL if such |
| * a net device doesn't exist. The vendor driver should call dev_hold |
| * on this net device. The HW vendor's device driver must guarantee |
| * that this function returns NULL before the net device reaches |
| * NETDEV_UNREGISTER_FINAL state. |
| */ |
| struct net_device *(*get_netdev)(struct ib_device *device, |
| u8 port_num); |
| int (*query_gid)(struct ib_device *device, |
| u8 port_num, int index, |
| union ib_gid *gid); |
| /* When calling add_gid, the HW vendor's driver should |
| * add the gid of device @device at gid index @index of |
| * port @port_num to be @gid. Meta-info of that gid (for example, |
| * the network device related to this gid is available |
| * at @attr. @context allows the HW vendor driver to store extra |
| * information together with a GID entry. The HW vendor may allocate |
| * memory to contain this information and store it in @context when a |
| * new GID entry is written to. Params are consistent until the next |
| * call of add_gid or delete_gid. The function should return 0 on |
| * success or error otherwise. The function could be called |
| * concurrently for different ports. This function is only called |
| * when roce_gid_table is used. |
| */ |
| int (*add_gid)(struct ib_device *device, |
| u8 port_num, |
| unsigned int index, |
| const union ib_gid *gid, |
| const struct ib_gid_attr *attr, |
| void **context); |
| /* When calling del_gid, the HW vendor's driver should delete the |
| * gid of device @device at gid index @index of port @port_num. |
| * Upon the deletion of a GID entry, the HW vendor must free any |
| * allocated memory. The caller will clear @context afterwards. |
| * This function is only called when roce_gid_table is used. |
| */ |
| int (*del_gid)(struct ib_device *device, |
| u8 port_num, |
| unsigned int index, |
| void **context); |
| int (*query_pkey)(struct ib_device *device, |
| u8 port_num, u16 index, u16 *pkey); |
| int (*modify_device)(struct ib_device *device, |
| int device_modify_mask, |
| struct ib_device_modify *device_modify); |
| int (*modify_port)(struct ib_device *device, |
| u8 port_num, int port_modify_mask, |
| struct ib_port_modify *port_modify); |
| struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device, |
| struct ib_udata *udata); |
| int (*dealloc_ucontext)(struct ib_ucontext *context); |
| int (*mmap)(struct ib_ucontext *context, |
| struct vm_area_struct *vma); |
| struct ib_pd * (*alloc_pd)(struct ib_device *device, |
| struct ib_ucontext *context, |
| struct ib_udata *udata); |
| int (*dealloc_pd)(struct ib_pd *pd); |
| struct ib_ah * (*create_ah)(struct ib_pd *pd, |
| struct rdma_ah_attr *ah_attr, |
| struct ib_udata *udata); |
| int (*modify_ah)(struct ib_ah *ah, |
| struct rdma_ah_attr *ah_attr); |
| int (*query_ah)(struct ib_ah *ah, |
| struct rdma_ah_attr *ah_attr); |
| int (*destroy_ah)(struct ib_ah *ah); |
| struct ib_srq * (*create_srq)(struct ib_pd *pd, |
| struct ib_srq_init_attr *srq_init_attr, |
| struct ib_udata *udata); |
| int (*modify_srq)(struct ib_srq *srq, |
| struct ib_srq_attr *srq_attr, |
| enum ib_srq_attr_mask srq_attr_mask, |
| struct ib_udata *udata); |
| int (*query_srq)(struct ib_srq *srq, |
| struct ib_srq_attr *srq_attr); |
| int (*destroy_srq)(struct ib_srq *srq); |
| int (*post_srq_recv)(struct ib_srq *srq, |
| struct ib_recv_wr *recv_wr, |
| struct ib_recv_wr **bad_recv_wr); |
| struct ib_qp * (*create_qp)(struct ib_pd *pd, |
| struct ib_qp_init_attr *qp_init_attr, |
| struct ib_udata *udata); |
| int (*modify_qp)(struct ib_qp *qp, |
| struct ib_qp_attr *qp_attr, |
| int qp_attr_mask, |
| struct ib_udata *udata); |
| int (*query_qp)(struct ib_qp *qp, |
| struct ib_qp_attr *qp_attr, |
| int qp_attr_mask, |
| struct ib_qp_init_attr *qp_init_attr); |
| int (*destroy_qp)(struct ib_qp *qp); |
| int (*post_send)(struct ib_qp *qp, |
| struct ib_send_wr *send_wr, |
| struct ib_send_wr **bad_send_wr); |
| int (*post_recv)(struct ib_qp *qp, |
| struct ib_recv_wr *recv_wr, |
| struct ib_recv_wr **bad_recv_wr); |
| struct ib_cq * (*create_cq)(struct ib_device *device, |
| const struct ib_cq_init_attr *attr, |
| struct ib_ucontext *context, |
| struct ib_udata *udata); |
| int (*modify_cq)(struct ib_cq *cq, u16 cq_count, |
| u16 cq_period); |
| int (*destroy_cq)(struct ib_cq *cq); |
| int (*resize_cq)(struct ib_cq *cq, int cqe, |
| struct ib_udata *udata); |
| int (*poll_cq)(struct ib_cq *cq, int num_entries, |
| struct ib_wc *wc); |
| int (*peek_cq)(struct ib_cq *cq, int wc_cnt); |
| int (*req_notify_cq)(struct ib_cq *cq, |
| enum ib_cq_notify_flags flags); |
| int (*req_ncomp_notif)(struct ib_cq *cq, |
| int wc_cnt); |
| struct ib_mr * (*get_dma_mr)(struct ib_pd *pd, |
| int mr_access_flags); |
| struct ib_mr * (*reg_user_mr)(struct ib_pd *pd, |
| u64 start, u64 length, |
| u64 virt_addr, |
| int mr_access_flags, |
| struct ib_udata *udata); |
| int (*rereg_user_mr)(struct ib_mr *mr, |
| int flags, |
| u64 start, u64 length, |
| u64 virt_addr, |
| int mr_access_flags, |
| struct ib_pd *pd, |
| struct ib_udata *udata); |
| int (*dereg_mr)(struct ib_mr *mr); |
| struct ib_mr * (*alloc_mr)(struct ib_pd *pd, |
| enum ib_mr_type mr_type, |
| u32 max_num_sg); |
| int (*map_mr_sg)(struct ib_mr *mr, |
| struct scatterlist *sg, |
| int sg_nents, |
| unsigned int *sg_offset); |
| struct ib_mw * (*alloc_mw)(struct ib_pd *pd, |
| enum ib_mw_type type, |
| struct ib_udata *udata); |
| int (*dealloc_mw)(struct ib_mw *mw); |
| struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd, |
| int mr_access_flags, |
| struct ib_fmr_attr *fmr_attr); |
| int (*map_phys_fmr)(struct ib_fmr *fmr, |
| u64 *page_list, int list_len, |
| u64 iova); |
| int (*unmap_fmr)(struct list_head *fmr_list); |
| int (*dealloc_fmr)(struct ib_fmr *fmr); |
| int (*attach_mcast)(struct ib_qp *qp, |
| union ib_gid *gid, |
| u16 lid); |
| int (*detach_mcast)(struct ib_qp *qp, |
| union ib_gid *gid, |
| u16 lid); |
| int (*process_mad)(struct ib_device *device, |
| int process_mad_flags, |
| u8 port_num, |
| const struct ib_wc *in_wc, |
| const struct ib_grh *in_grh, |
| const struct ib_mad_hdr *in_mad, |
| size_t in_mad_size, |
| struct ib_mad_hdr *out_mad, |
| size_t *out_mad_size, |
| u16 *out_mad_pkey_index); |
| struct ib_xrcd * (*alloc_xrcd)(struct ib_device *device, |
| struct ib_ucontext *ucontext, |
| struct ib_udata *udata); |
| int (*dealloc_xrcd)(struct ib_xrcd *xrcd); |
| struct ib_flow * (*create_flow)(struct ib_qp *qp, |
| struct ib_flow_attr |
| *flow_attr, |
| int domain); |
| int (*destroy_flow)(struct ib_flow *flow_id); |
| int (*check_mr_status)(struct ib_mr *mr, u32 check_mask, |
| struct ib_mr_status *mr_status); |
| void (*disassociate_ucontext)(struct ib_ucontext *ibcontext); |
| void (*drain_rq)(struct ib_qp *qp); |
| void (*drain_sq)(struct ib_qp *qp); |
| int (*set_vf_link_state)(struct ib_device *device, int vf, u8 port, |
| int state); |
| int (*get_vf_config)(struct ib_device *device, int vf, u8 port, |
| struct ifla_vf_info *ivf); |
| int (*get_vf_stats)(struct ib_device *device, int vf, u8 port, |
| struct ifla_vf_stats *stats); |
| int (*set_vf_guid)(struct ib_device *device, int vf, u8 port, u64 guid, |
| int type); |
| struct ib_wq * (*create_wq)(struct ib_pd *pd, |
| struct ib_wq_init_attr *init_attr, |
| struct ib_udata *udata); |
| int (*destroy_wq)(struct ib_wq *wq); |
| int (*modify_wq)(struct ib_wq *wq, |
| struct ib_wq_attr *attr, |
| u32 wq_attr_mask, |
| struct ib_udata *udata); |
| struct ib_rwq_ind_table * (*create_rwq_ind_table)(struct ib_device *device, |
| struct ib_rwq_ind_table_init_attr *init_attr, |
| struct ib_udata *udata); |
| int (*destroy_rwq_ind_table)(struct ib_rwq_ind_table *wq_ind_table); |
| /** |
| * rdma netdev operation |
| * |
| * Driver implementing alloc_rdma_netdev must return -EOPNOTSUPP if it |
| * doesn't support the specified rdma netdev type. |
| */ |
| struct net_device *(*alloc_rdma_netdev)( |
| struct ib_device *device, |
| u8 port_num, |
| enum rdma_netdev_t type, |
| const char *name, |
| unsigned char name_assign_type, |
| void (*setup)(struct net_device *)); |
| |
| struct module *owner; |
| struct device dev; |
| struct kobject *ports_parent; |
| struct list_head port_list; |
| |
| enum { |
| IB_DEV_UNINITIALIZED, |
| IB_DEV_REGISTERED, |
| IB_DEV_UNREGISTERED |
| } reg_state; |
| |
| int uverbs_abi_ver; |
| u64 uverbs_cmd_mask; |
| u64 uverbs_ex_cmd_mask; |
| |
| char node_desc[IB_DEVICE_NODE_DESC_MAX]; |
| __be64 node_guid; |
| u32 local_dma_lkey; |
| u16 is_switch:1; |
| u8 node_type; |
| u8 phys_port_cnt; |
| struct ib_device_attr attrs; |
| struct attribute_group *hw_stats_ag; |
| struct rdma_hw_stats *hw_stats; |
| |
| #ifdef CONFIG_CGROUP_RDMA |
| struct rdmacg_device cg_device; |
| #endif |
| |
| u32 index; |
| |
| /** |
| * The following mandatory functions are used only at device |
| * registration. Keep functions such as these at the end of this |
| * structure to avoid cache line misses when accessing struct ib_device |
| * in fast paths. |
| */ |
| int (*get_port_immutable)(struct ib_device *, u8, struct ib_port_immutable *); |
| void (*get_dev_fw_str)(struct ib_device *, char *str); |
| const struct cpumask *(*get_vector_affinity)(struct ib_device *ibdev, |
| int comp_vector); |
| |
| struct uverbs_root_spec *specs_root; |
| }; |
| |
| struct ib_client { |
| char *name; |
| void (*add) (struct ib_device *); |
| void (*remove)(struct ib_device *, void *client_data); |
| |
| /* Returns the net_dev belonging to this ib_client and matching the |
| * given parameters. |
| * @dev: An RDMA device that the net_dev use for communication. |
| * @port: A physical port number on the RDMA device. |
| * @pkey: P_Key that the net_dev uses if applicable. |
| * @gid: A GID that the net_dev uses to communicate. |
| * @addr: An IP address the net_dev is configured with. |
| * @client_data: The device's client data set by ib_set_client_data(). |
| * |
| * An ib_client that implements a net_dev on top of RDMA devices |
| * (such as IP over IB) should implement this callback, allowing the |
| * rdma_cm module to find the right net_dev for a given request. |
| * |
| * The caller is responsible for calling dev_put on the returned |
| * netdev. */ |
| struct net_device *(*get_net_dev_by_params)( |
| struct ib_device *dev, |
| u8 port, |
| u16 pkey, |
| const union ib_gid *gid, |
| const struct sockaddr *addr, |
| void *client_data); |
| struct list_head list; |
| }; |
| |
| struct ib_device *ib_alloc_device(size_t size); |
| void ib_dealloc_device(struct ib_device *device); |
| |
| void ib_get_device_fw_str(struct ib_device *device, char *str); |
| |
| int ib_register_device(struct ib_device *device, |
| int (*port_callback)(struct ib_device *, |
| u8, struct kobject *)); |
| void ib_unregister_device(struct ib_device *device); |
| |
| int ib_register_client (struct ib_client *client); |
| void ib_unregister_client(struct ib_client *client); |
| |
| void *ib_get_client_data(struct ib_device *device, struct ib_client *client); |
| void ib_set_client_data(struct ib_device *device, struct ib_client *client, |
| void *data); |
| |
| static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len) |
| { |
| return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0; |
| } |
| |
| static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len) |
| { |
| return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0; |
| } |
| |
| static inline bool ib_is_udata_cleared(struct ib_udata *udata, |
| size_t offset, |
| size_t len) |
| { |
| const void __user *p = udata->inbuf + offset; |
| bool ret; |
| u8 *buf; |
| |
| if (len > USHRT_MAX) |
| return false; |
| |
| buf = memdup_user(p, len); |
| if (IS_ERR(buf)) |
| return false; |
| |
| ret = !memchr_inv(buf, 0, len); |
| kfree(buf); |
| return ret; |
| } |
| |
| /** |
| * ib_modify_qp_is_ok - Check that the supplied attribute mask |
| * contains all required attributes and no attributes not allowed for |
| * the given QP state transition. |
| * @cur_state: Current QP state |
| * @next_state: Next QP state |
| * @type: QP type |
| * @mask: Mask of supplied QP attributes |
| * @ll : link layer of port |
| * |
| * This function is a helper function that a low-level driver's |
| * modify_qp method can use to validate the consumer's input. It |
| * checks that cur_state and next_state are valid QP states, that a |
| * transition from cur_state to next_state is allowed by the IB spec, |
| * and that the attribute mask supplied is allowed for the transition. |
| */ |
| int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, |
| enum ib_qp_type type, enum ib_qp_attr_mask mask, |
| enum rdma_link_layer ll); |
| |
| void ib_register_event_handler(struct ib_event_handler *event_handler); |
| void ib_unregister_event_handler(struct ib_event_handler *event_handler); |
| void ib_dispatch_event(struct ib_event *event); |
| |
| int ib_query_port(struct ib_device *device, |
| u8 port_num, struct ib_port_attr *port_attr); |
| |
| enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, |
| u8 port_num); |
| |
| /** |
| * rdma_cap_ib_switch - Check if the device is IB switch |
| * @device: Device to check |
| * |
| * Device driver is responsible for setting is_switch bit on |
| * in ib_device structure at init time. |
| * |
| * Return: true if the device is IB switch. |
| */ |
| static inline bool rdma_cap_ib_switch(const struct ib_device *device) |
| { |
| return device->is_switch; |
| } |
| |
| /** |
| * rdma_start_port - Return the first valid port number for the device |
| * specified |
| * |
| * @device: Device to be checked |
| * |
| * Return start port number |
| */ |
| static inline u8 rdma_start_port(const struct ib_device *device) |
| { |
| return rdma_cap_ib_switch(device) ? 0 : 1; |
| } |
| |
| /** |
| * rdma_end_port - Return the last valid port number for the device |
| * specified |
| * |
| * @device: Device to be checked |
| * |
| * Return last port number |
| */ |
| static inline u8 rdma_end_port(const struct ib_device *device) |
| { |
| return rdma_cap_ib_switch(device) ? 0 : device->phys_port_cnt; |
| } |
| |
| static inline int rdma_is_port_valid(const struct ib_device *device, |
| unsigned int port) |
| { |
| return (port >= rdma_start_port(device) && |
| port <= rdma_end_port(device)); |
| } |
| |
| static inline bool rdma_protocol_ib(const struct ib_device *device, u8 port_num) |
| { |
| return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IB; |
| } |
| |
| static inline bool rdma_protocol_roce(const struct ib_device *device, u8 port_num) |
| { |
| return device->port_immutable[port_num].core_cap_flags & |
| (RDMA_CORE_CAP_PROT_ROCE | RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP); |
| } |
| |
| static inline bool rdma_protocol_roce_udp_encap(const struct ib_device *device, u8 port_num) |
| { |
| return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP; |
| } |
| |
| static inline bool rdma_protocol_roce_eth_encap(const struct ib_device *device, u8 port_num) |
| { |
| return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE; |
| } |
| |
| static inline bool rdma_protocol_iwarp(const struct ib_device *device, u8 port_num) |
| { |
| return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IWARP; |
| } |
| |
| static inline bool rdma_ib_or_roce(const struct ib_device *device, u8 port_num) |
| { |
| return rdma_protocol_ib(device, port_num) || |
| rdma_protocol_roce(device, port_num); |
| } |
| |
| static inline bool rdma_protocol_raw_packet(const struct ib_device *device, u8 port_num) |
| { |
| return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_RAW_PACKET; |
| } |
| |
| static inline bool rdma_protocol_usnic(const struct ib_device *device, u8 port_num) |
| { |
| return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_USNIC; |
| } |
| |
| /** |
| * rdma_cap_ib_mad - Check if the port of a device supports Infiniband |
| * Management Datagrams. |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * Management Datagrams (MAD) are a required part of the InfiniBand |
| * specification and are supported on all InfiniBand devices. A slightly |
| * extended version are also supported on OPA interfaces. |
| * |
| * Return: true if the port supports sending/receiving of MAD packets. |
| */ |
| static inline bool rdma_cap_ib_mad(const struct ib_device *device, u8 port_num) |
| { |
| return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_MAD; |
| } |
| |
| /** |
| * rdma_cap_opa_mad - Check if the port of device provides support for OPA |
| * Management Datagrams. |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * Intel OmniPath devices extend and/or replace the InfiniBand Management |
| * datagrams with their own versions. These OPA MADs share many but not all of |
| * the characteristics of InfiniBand MADs. |
| * |
| * OPA MADs differ in the following ways: |
| * |
| * 1) MADs are variable size up to 2K |
| * IBTA defined MADs remain fixed at 256 bytes |
| * 2) OPA SMPs must carry valid PKeys |
| * 3) OPA SMP packets are a different format |
| * |
| * Return: true if the port supports OPA MAD packet formats. |
| */ |
| static inline bool rdma_cap_opa_mad(struct ib_device *device, u8 port_num) |
| { |
| return (device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_OPA_MAD) |
| == RDMA_CORE_CAP_OPA_MAD; |
| } |
| |
| /** |
| * rdma_cap_ib_smi - Check if the port of a device provides an Infiniband |
| * Subnet Management Agent (SMA) on the Subnet Management Interface (SMI). |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * Each InfiniBand node is required to provide a Subnet Management Agent |
| * that the subnet manager can access. Prior to the fabric being fully |
| * configured by the subnet manager, the SMA is accessed via a well known |
| * interface called the Subnet Management Interface (SMI). This interface |
| * uses directed route packets to communicate with the SM to get around the |
| * chicken and egg problem of the SM needing to know what's on the fabric |
| * in order to configure the fabric, and needing to configure the fabric in |
| * order to send packets to the devices on the fabric. These directed |
| * route packets do not need the fabric fully configured in order to reach |
| * their destination. The SMI is the only method allowed to send |
| * directed route packets on an InfiniBand fabric. |
| * |
| * Return: true if the port provides an SMI. |
| */ |
| static inline bool rdma_cap_ib_smi(const struct ib_device *device, u8 port_num) |
| { |
| return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SMI; |
| } |
| |
| /** |
| * rdma_cap_ib_cm - Check if the port of device has the capability Infiniband |
| * Communication Manager. |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * The InfiniBand Communication Manager is one of many pre-defined General |
| * Service Agents (GSA) that are accessed via the General Service |
| * Interface (GSI). It's role is to facilitate establishment of connections |
| * between nodes as well as other management related tasks for established |
| * connections. |
| * |
| * Return: true if the port supports an IB CM (this does not guarantee that |
| * a CM is actually running however). |
| */ |
| static inline bool rdma_cap_ib_cm(const struct ib_device *device, u8 port_num) |
| { |
| return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_CM; |
| } |
| |
| /** |
| * rdma_cap_iw_cm - Check if the port of device has the capability IWARP |
| * Communication Manager. |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * Similar to above, but specific to iWARP connections which have a different |
| * managment protocol than InfiniBand. |
| * |
| * Return: true if the port supports an iWARP CM (this does not guarantee that |
| * a CM is actually running however). |
| */ |
| static inline bool rdma_cap_iw_cm(const struct ib_device *device, u8 port_num) |
| { |
| return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IW_CM; |
| } |
| |
| /** |
| * rdma_cap_ib_sa - Check if the port of device has the capability Infiniband |
| * Subnet Administration. |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * An InfiniBand Subnet Administration (SA) service is a pre-defined General |
| * Service Agent (GSA) provided by the Subnet Manager (SM). On InfiniBand |
| * fabrics, devices should resolve routes to other hosts by contacting the |
| * SA to query the proper route. |
| * |
| * Return: true if the port should act as a client to the fabric Subnet |
| * Administration interface. This does not imply that the SA service is |
| * running locally. |
| */ |
| static inline bool rdma_cap_ib_sa(const struct ib_device *device, u8 port_num) |
| { |
| return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SA; |
| } |
| |
| /** |
| * rdma_cap_ib_mcast - Check if the port of device has the capability Infiniband |
| * Multicast. |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * InfiniBand multicast registration is more complex than normal IPv4 or |
| * IPv6 multicast registration. Each Host Channel Adapter must register |
| * with the Subnet Manager when it wishes to join a multicast group. It |
| * should do so only once regardless of how many queue pairs it subscribes |
| * to this group. And it should leave the group only after all queue pairs |
| * attached to the group have been detached. |
| * |
| * Return: true if the port must undertake the additional adminstrative |
| * overhead of registering/unregistering with the SM and tracking of the |
| * total number of queue pairs attached to the multicast group. |
| */ |
| static inline bool rdma_cap_ib_mcast(const struct ib_device *device, u8 port_num) |
| { |
| return rdma_cap_ib_sa(device, port_num); |
| } |
| |
| /** |
| * rdma_cap_af_ib - Check if the port of device has the capability |
| * Native Infiniband Address. |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * InfiniBand addressing uses a port's GUID + Subnet Prefix to make a default |
| * GID. RoCE uses a different mechanism, but still generates a GID via |
| * a prescribed mechanism and port specific data. |
| * |
| * Return: true if the port uses a GID address to identify devices on the |
| * network. |
| */ |
| static inline bool rdma_cap_af_ib(const struct ib_device *device, u8 port_num) |
| { |
| return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_AF_IB; |
| } |
| |
| /** |
| * rdma_cap_eth_ah - Check if the port of device has the capability |
| * Ethernet Address Handle. |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * RoCE is InfiniBand over Ethernet, and it uses a well defined technique |
| * to fabricate GIDs over Ethernet/IP specific addresses native to the |
| * port. Normally, packet headers are generated by the sending host |
| * adapter, but when sending connectionless datagrams, we must manually |
| * inject the proper headers for the fabric we are communicating over. |
| * |
| * Return: true if we are running as a RoCE port and must force the |
| * addition of a Global Route Header built from our Ethernet Address |
| * Handle into our header list for connectionless packets. |
| */ |
| static inline bool rdma_cap_eth_ah(const struct ib_device *device, u8 port_num) |
| { |
| return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_ETH_AH; |
| } |
| |
| /** |
| * rdma_cap_opa_ah - Check if the port of device supports |
| * OPA Address handles |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * Return: true if we are running on an OPA device which supports |
| * the extended OPA addressing. |
| */ |
| static inline bool rdma_cap_opa_ah(struct ib_device *device, u8 port_num) |
| { |
| return (device->port_immutable[port_num].core_cap_flags & |
| RDMA_CORE_CAP_OPA_AH) == RDMA_CORE_CAP_OPA_AH; |
| } |
| |
| /** |
| * rdma_max_mad_size - Return the max MAD size required by this RDMA Port. |
| * |
| * @device: Device |
| * @port_num: Port number |
| * |
| * This MAD size includes the MAD headers and MAD payload. No other headers |
| * are included. |
| * |
| * Return the max MAD size required by the Port. Will return 0 if the port |
| * does not support MADs |
| */ |
| static inline size_t rdma_max_mad_size(const struct ib_device *device, u8 port_num) |
| { |
| return device->port_immutable[port_num].max_mad_size; |
| } |
| |
| /** |
| * rdma_cap_roce_gid_table - Check if the port of device uses roce_gid_table |
| * @device: Device to check |
| * @port_num: Port number to check |
| * |
| * RoCE GID table mechanism manages the various GIDs for a device. |
| * |
| * NOTE: if allocating the port's GID table has failed, this call will still |
| * return true, but any RoCE GID table API will fail. |
| * |
| * Return: true if the port uses RoCE GID table mechanism in order to manage |
| * its GIDs. |
| */ |
| static inline bool rdma_cap_roce_gid_table(const struct ib_device *device, |
| u8 port_num) |
| { |
| return rdma_protocol_roce(device, port_num) && |
| device->add_gid && device->del_gid; |
| } |
| |
| /* |
| * Check if the device supports READ W/ INVALIDATE. |
| */ |
| static inline bool rdma_cap_read_inv(struct ib_device *dev, u32 port_num) |
| { |
| /* |
| * iWarp drivers must support READ W/ INVALIDATE. No other protocol |
| * has support for it yet. |
| */ |
| return rdma_protocol_iwarp(dev, port_num); |
| } |
| |
| int ib_query_gid(struct ib_device *device, |
| u8 port_num, int index, union ib_gid *gid, |
| struct ib_gid_attr *attr); |
| |
| int ib_set_vf_link_state(struct ib_device *device, int vf, u8 port, |
| int state); |
| int ib_get_vf_config(struct ib_device *device, int vf, u8 port, |
| struct ifla_vf_info *info); |
| int ib_get_vf_stats(struct ib_device *device, int vf, u8 port, |
| struct ifla_vf_stats *stats); |
| int ib_set_vf_guid(struct ib_device *device, int vf, u8 port, u64 guid, |
| int type); |
| |
| int ib_query_pkey(struct ib_device *device, |
| u8 port_num, u16 index, u16 *pkey); |
| |
| int ib_modify_device(struct ib_device *device, |
| int device_modify_mask, |
| struct ib_device_modify *device_modify); |
| |
| int ib_modify_port(struct ib_device *device, |
| u8 port_num, int port_modify_mask, |
| struct ib_port_modify *port_modify); |
| |
| int ib_find_gid(struct ib_device *device, union ib_gid *gid, |
| enum ib_gid_type gid_type, struct net_device *ndev, |
| u8 *port_num, u16 *index); |
| |
| int ib_find_pkey(struct ib_device *device, |
| u8 port_num, u16 pkey, u16 *index); |
| |
| enum ib_pd_flags { |
| /* |
| * Create a memory registration for all memory in the system and place |
| * the rkey for it into pd->unsafe_global_rkey. This can be used by |
| * ULPs to avoid the overhead of dynamic MRs. |
| * |
| * This flag is generally considered unsafe and must only be used in |
| * extremly trusted environments. Every use of it will log a warning |
| * in the kernel log. |
| */ |
| IB_PD_UNSAFE_GLOBAL_RKEY = 0x01, |
| }; |
| |
| struct ib_pd *__ib_alloc_pd(struct ib_device *device, unsigned int flags, |
| const char *caller); |
| #define ib_alloc_pd(device, flags) \ |
| __ib_alloc_pd((device), (flags), __func__) |
| void ib_dealloc_pd(struct ib_pd *pd); |
| |
| /** |
| * rdma_create_ah - Creates an address handle for the given address vector. |
| * @pd: The protection domain associated with the address handle. |
| * @ah_attr: The attributes of the address vector. |
| * |
| * The address handle is used to reference a local or global destination |
| * in all UD QP post sends. |
| */ |
| struct ib_ah *rdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr); |
| |
| /** |
| * ib_get_gids_from_rdma_hdr - Get sgid and dgid from GRH or IPv4 header |
| * work completion. |
| * @hdr: the L3 header to parse |
| * @net_type: type of header to parse |
| * @sgid: place to store source gid |
| * @dgid: place to store destination gid |
| */ |
| int ib_get_gids_from_rdma_hdr(const union rdma_network_hdr *hdr, |
| enum rdma_network_type net_type, |
| union ib_gid *sgid, union ib_gid *dgid); |
| |
| /** |
| * ib_get_rdma_header_version - Get the header version |
| * @hdr: the L3 header to parse |
| */ |
| int ib_get_rdma_header_version(const union rdma_network_hdr *hdr); |
| |
| /** |
| * ib_init_ah_from_wc - Initializes address handle attributes from a |
| * work completion. |
| * @device: Device on which the received message arrived. |
| * @port_num: Port on which the received message arrived. |
| * @wc: Work completion associated with the received message. |
| * @grh: References the received global route header. This parameter is |
| * ignored unless the work completion indicates that the GRH is valid. |
| * @ah_attr: Returned attributes that can be used when creating an address |
| * handle for replying to the message. |
| */ |
| int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, |
| const struct ib_wc *wc, const struct ib_grh *grh, |
| struct rdma_ah_attr *ah_attr); |
| |
| /** |
| * ib_create_ah_from_wc - Creates an address handle associated with the |
| * sender of the specified work completion. |
| * @pd: The protection domain associated with the address handle. |
| * @wc: Work completion information associated with a received message. |
| * @grh: References the received global route header. This parameter is |
| * ignored unless the work completion indicates that the GRH is valid. |
| * @port_num: The outbound port number to associate with the address. |
| * |
| * The address handle is used to reference a local or global destination |
| * in all UD QP post sends. |
| */ |
| struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc, |
| const struct ib_grh *grh, u8 port_num); |
| |
| /** |
| * rdma_modify_ah - Modifies the address vector associated with an address |
| * handle. |
| * @ah: The address handle to modify. |
| * @ah_attr: The new address vector attributes to associate with the |
| * address handle. |
| */ |
| int rdma_modify_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr); |
| |
| /** |
| * rdma_query_ah - Queries the address vector associated with an address |
| * handle. |
| * @ah: The address handle to query. |
| * @ah_attr: The address vector attributes associated with the address |
| * handle. |
| */ |
| int rdma_query_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr); |
| |
| /** |
| * rdma_destroy_ah - Destroys an address handle. |
| * @ah: The address handle to destroy. |
| */ |
| int rdma_destroy_ah(struct ib_ah *ah); |
| |
| /** |
| * ib_create_srq - Creates a SRQ associated with the specified protection |
| * domain. |
| * @pd: The protection domain associated with the SRQ. |
| * @srq_init_attr: A list of initial attributes required to create the |
| * SRQ. If SRQ creation succeeds, then the attributes are updated to |
| * the actual capabilities of the created SRQ. |
| * |
| * srq_attr->max_wr and srq_attr->max_sge are read the determine the |
| * requested size of the SRQ, and set to the actual values allocated |
| * on return. If ib_create_srq() succeeds, then max_wr and max_sge |
| * will always be at least as large as the requested values. |
| */ |
| struct ib_srq *ib_create_srq(struct ib_pd *pd, |
| struct ib_srq_init_attr *srq_init_attr); |
| |
| /** |
| * ib_modify_srq - Modifies the attributes for the specified SRQ. |
| * @srq: The SRQ to modify. |
| * @srq_attr: On input, specifies the SRQ attributes to modify. On output, |
| * the current values of selected SRQ attributes are returned. |
| * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ |
| * are being modified. |
| * |
| * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or |
| * IB_SRQ_LIMIT to set the SRQ's limit and request notification when |
| * the number of receives queued drops below the limit. |
| */ |
| int ib_modify_srq(struct ib_srq *srq, |
| struct ib_srq_attr *srq_attr, |
| enum ib_srq_attr_mask srq_attr_mask); |
| |
| /** |
| * ib_query_srq - Returns the attribute list and current values for the |
| * specified SRQ. |
| * @srq: The SRQ to query. |
| * @srq_attr: The attributes of the specified SRQ. |
| */ |
| int ib_query_srq(struct ib_srq *srq, |
| struct ib_srq_attr *srq_attr); |
| |
| /** |
| * ib_destroy_srq - Destroys the specified SRQ. |
| * @srq: The SRQ to destroy. |
| */ |
| int ib_destroy_srq(struct ib_srq *srq); |
| |
| /** |
| * ib_post_srq_recv - Posts a list of work requests to the specified SRQ. |
| * @srq: The SRQ to post the work request on. |
| * @recv_wr: A list of work requests to post on the receive queue. |
| * @bad_recv_wr: On an immediate failure, this parameter will reference |
| * the work request that failed to be posted on the QP. |
| */ |
| static inline int ib_post_srq_recv(struct ib_srq *srq, |
| struct ib_recv_wr *recv_wr, |
| struct ib_recv_wr **bad_recv_wr) |
| { |
| return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr); |
| } |
| |
| /** |
| * ib_create_qp - Creates a QP associated with the specified protection |
| * domain. |
| * @pd: The protection domain associated with the QP. |
| * @qp_init_attr: A list of initial attributes required to create the |
| * QP. If QP creation succeeds, then the attributes are updated to |
| * the actual capabilities of the created QP. |
| */ |
| struct ib_qp *ib_create_qp(struct ib_pd *pd, |
| struct ib_qp_init_attr *qp_init_attr); |
| |
| /** |
| * ib_modify_qp_with_udata - Modifies the attributes for the specified QP. |
| * @qp: The QP to modify. |
| * @attr: On input, specifies the QP attributes to modify. On output, |
| * the current values of selected QP attributes are returned. |
| * @attr_mask: A bit-mask used to specify which attributes of the QP |
| * are being modified. |
| * @udata: pointer to user's input output buffer information |
| * are being modified. |
| * It returns 0 on success and returns appropriate error code on error. |
| */ |
| int ib_modify_qp_with_udata(struct ib_qp *qp, |
| struct ib_qp_attr *attr, |
| int attr_mask, |
| struct ib_udata *udata); |
| |
| /** |
| * ib_modify_qp - Modifies the attributes for the specified QP and then |
| * transitions the QP to the given state. |
| * @qp: The QP to modify. |
| * @qp_attr: On input, specifies the QP attributes to modify. On output, |
| * the current values of selected QP attributes are returned. |
| * @qp_attr_mask: A bit-mask used to specify which attributes of the QP |
| * are being modified. |
| */ |
| int ib_modify_qp(struct ib_qp *qp, |
| struct ib_qp_attr *qp_attr, |
| int qp_attr_mask); |
| |
| /** |
| * ib_query_qp - Returns the attribute list and current values for the |
| * specified QP. |
| * @qp: The QP to query. |
| * @qp_attr: The attributes of the specified QP. |
| * @qp_attr_mask: A bit-mask used to select specific attributes to query. |
| * @qp_init_attr: Additional attributes of the selected QP. |
| * |
| * The qp_attr_mask may be used to limit the query to gathering only the |
| * selected attributes. |
| */ |
| int ib_query_qp(struct ib_qp *qp, |
| struct ib_qp_attr *qp_attr, |
| int qp_attr_mask, |
| struct ib_qp_init_attr *qp_init_attr); |
| |
| /** |
| * ib_destroy_qp - Destroys the specified QP. |
| * @qp: The QP to destroy. |
| */ |
| int ib_destroy_qp(struct ib_qp *qp); |
| |
| /** |
| * ib_open_qp - Obtain a reference to an existing sharable QP. |
| * @xrcd - XRC domain |
| * @qp_open_attr: Attributes identifying the QP to open. |
| * |
| * Returns a reference to a sharable QP. |
| */ |
| struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, |
| struct ib_qp_open_attr *qp_open_attr); |
| |
| /** |
| * ib_close_qp - Release an external reference to a QP. |
| * @qp: The QP handle to release |
| * |
| * The opened QP handle is released by the caller. The underlying |
| * shared QP is not destroyed until all internal references are released. |
| */ |
| int ib_close_qp(struct ib_qp *qp); |
| |
| /** |
| * ib_post_send - Posts a list of work requests to the send queue of |
| * the specified QP. |
| * @qp: The QP to post the work request on. |
| * @send_wr: A list of work requests to post on the send queue. |
| * @bad_send_wr: On an immediate failure, this parameter will reference |
| * the work request that failed to be posted on the QP. |
| * |
| * While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate |
| * error is returned, the QP state shall not be affected, |
| * ib_post_send() will return an immediate error after queueing any |
| * earlier work requests in the list. |
| */ |
| static inline int ib_post_send(struct ib_qp *qp, |
| struct ib_send_wr *send_wr, |
| struct ib_send_wr **bad_send_wr) |
| { |
| return qp->device->post_send(qp, send_wr, bad_send_wr); |
| } |
| |
| /** |
| * ib_post_recv - Posts a list of work requests to the receive queue of |
| * the specified QP. |
| * @qp: The QP to post the work request on. |
| * @recv_wr: A list of work requests to post on the receive queue. |
| * @bad_recv_wr: On an immediate failure, this parameter will reference |
| * the work request that failed to be posted on the QP. |
| */ |
| static inline int ib_post_recv(struct ib_qp *qp, |
| struct ib_recv_wr *recv_wr, |
| struct ib_recv_wr **bad_recv_wr) |
| { |
| return qp->device->post_recv(qp, recv_wr, bad_recv_wr); |
| } |
| |
| struct ib_cq *ib_alloc_cq(struct ib_device *dev, void *private, |
| int nr_cqe, int comp_vector, enum ib_poll_context poll_ctx); |
| void ib_free_cq(struct ib_cq *cq); |
| int ib_process_cq_direct(struct ib_cq *cq, int budget); |
| |
| /** |
| * ib_create_cq - Creates a CQ on the specified device. |
| * @device: The device on which to create the CQ. |
| * @comp_handler: A user-specified callback that is invoked when a |
| * completion event occurs on the CQ. |
| * @event_handler: A user-specified callback that is invoked when an |
| * asynchronous event not associated with a completion occurs on the CQ. |
| * @cq_context: Context associated with the CQ returned to the user via |
| * the associated completion and event handlers. |
| * @cq_attr: The attributes the CQ should be created upon. |
| * |
| * Users can examine the cq structure to determine the actual CQ size. |
| */ |
| struct ib_cq *ib_create_cq(struct ib_device *device, |
| ib_comp_handler comp_handler, |
| void (*event_handler)(struct ib_event *, void *), |
| void *cq_context, |
| const struct ib_cq_init_attr *cq_attr); |
| |
| /** |
| * ib_resize_cq - Modifies the capacity of the CQ. |
| * @cq: The CQ to resize. |
| * @cqe: The minimum size of the CQ. |
| * |
| * Users can examine the cq structure to determine the actual CQ size. |
| */ |
| int ib_resize_cq(struct ib_cq *cq, int cqe); |
| |
| /** |
| * ib_modify_cq - Modifies moderation params of the CQ |
| * @cq: The CQ to modify. |
| * @cq_count: number of CQEs that will trigger an event |
| * @cq_period: max period of time in usec before triggering an event |
| * |
| */ |
| int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period); |
| |
| /** |
| * ib_destroy_cq - Destroys the specified CQ. |
| * @cq: The CQ to destroy. |
| */ |
| int ib_destroy_cq(struct ib_cq *cq); |
| |
| /** |
| * ib_poll_cq - poll a CQ for completion(s) |
| * @cq:the CQ being polled |
| * @num_entries:maximum number of completions to return |
| * @wc:array of at least @num_entries &struct ib_wc where completions |
| * will be returned |
| * |
| * Poll a CQ for (possibly multiple) completions. If the return value |
| * is < 0, an error occurred. If the return value is >= 0, it is the |
| * number of completions returned. If the return value is |
| * non-negative and < num_entries, then the CQ was emptied. |
| */ |
| static inline int ib_poll_cq(struct ib_cq *cq, int num_entries, |
| struct ib_wc *wc) |
| { |
| return cq->device->poll_cq(cq, num_entries, wc); |
| } |
| |
| /** |
| * ib_peek_cq - Returns the number of unreaped completions currently |
| * on the specified CQ. |
| * @cq: The CQ to peek. |
| * @wc_cnt: A minimum number of unreaped completions to check for. |
| * |
| * If the number of unreaped completions is greater than or equal to wc_cnt, |
| * this function returns wc_cnt, otherwise, it returns the actual number of |
| * unreaped completions. |
| */ |
| int ib_peek_cq(struct ib_cq *cq, int wc_cnt); |
| |
| /** |
| * ib_req_notify_cq - Request completion notification on a CQ. |
| * @cq: The CQ to generate an event for. |
| * @flags: |
| * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP |
| * to request an event on the next solicited event or next work |
| * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS |
| * may also be |ed in to request a hint about missed events, as |
| * described below. |
| * |
| * Return Value: |
| * < 0 means an error occurred while requesting notification |
| * == 0 means notification was requested successfully, and if |
| * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events |
| * were missed and it is safe to wait for another event. In |
| * this case is it guaranteed that any work completions added |
| * to the CQ since the last CQ poll will trigger a completion |
| * notification event. |
| * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed |
| * in. It means that the consumer must poll the CQ again to |
| * make sure it is empty to avoid missing an event because of a |
| * race between requesting notification and an entry being |
| * added to the CQ. This return value means it is possible |
| * (but not guaranteed) that a work completion has been added |
| * to the CQ since the last poll without triggering a |
| * completion notification event. |
| */ |
| static inline int ib_req_notify_cq(struct ib_cq *cq, |
| enum ib_cq_notify_flags flags) |
| { |
| return cq->device->req_notify_cq(cq, flags); |
| } |
| |
| /** |
| * ib_req_ncomp_notif - Request completion notification when there are |
| * at least the specified number of unreaped completions on the CQ. |
| * @cq: The CQ to generate an event for. |
| * @wc_cnt: The number of unreaped completions that should be on the |
| * CQ before an event is generated. |
| */ |
| static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt) |
| { |
| return cq->device->req_ncomp_notif ? |
| cq->device->req_ncomp_notif(cq, wc_cnt) : |
| -ENOSYS; |
| } |
| |
| /** |
| * ib_dma_mapping_error - check a DMA addr for error |
| * @dev: The device for which the dma_addr was created |
| * @dma_addr: The DMA address to check |
| */ |
| static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr) |
| { |
| return dma_mapping_error(dev->dma_device, dma_addr); |
| } |
| |
| /** |
| * ib_dma_map_single - Map a kernel virtual address to DMA address |
| * @dev: The device for which the dma_addr is to be created |
| * @cpu_addr: The kernel virtual address |
| * @size: The size of the region in bytes |
| * @direction: The direction of the DMA |
| */ |
| static inline u64 ib_dma_map_single(struct ib_device *dev, |
| void *cpu_addr, size_t size, |
| enum dma_data_direction direction) |
| { |
| return dma_map_single(dev->dma_device, cpu_addr, size, direction); |
| } |
| |
| /** |
| * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single() |
| * @dev: The device for which the DMA address was created |
| * @addr: The DMA address |
| * @size: The size of the region in bytes |
| * @direction: The direction of the DMA |
| */ |
| static inline void ib_dma_unmap_single(struct ib_device *dev, |
| u64 addr, size_t size, |
| enum dma_data_direction direction) |
| { |
| dma_unmap_single(dev->dma_device, addr, size, direction); |
| } |
| |
| /** |
| * ib_dma_map_page - Map a physical page to DMA address |
| * @dev: The device for which the dma_addr is to be created |
| * @page: The page to be mapped |
| * @offset: The offset within the page |
| * @size: The size of the region in bytes |
| * @direction: The direction of the DMA |
| */ |
| static inline u64 ib_dma_map_page(struct ib_device *dev, |
| struct page *page, |
| unsigned long offset, |
| size_t size, |
| enum dma_data_direction direction) |
| { |
| return dma_map_page(dev->dma_device, page, offset, size, direction); |
| } |
| |
| /** |
| * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page() |
| * @dev: The device for which the DMA address was created |
| * @addr: The DMA address |
| * @size: The size of the region in bytes |
| * @direction: The direction of the DMA |
| */ |
| static inline void ib_dma_unmap_page(struct ib_device *dev, |
| u64 addr, size_t size, |
| enum dma_data_direction direction) |
| { |
| dma_unmap_page(dev->dma_device, addr, size, direction); |
| } |
| |
| /** |
| * ib_dma_map_sg - Map a scatter/gather list to DMA addresses |
| * @dev: The device for which the DMA addresses are to be created |
| * @sg: The array of scatter/gather entries |
| * @nents: The number of scatter/gather entries |
| * @direction: The direction of the DMA |
| */ |
| static inline int ib_dma_map_sg(struct ib_device *dev, |
| struct scatterlist *sg, int nents, |
| enum dma_data_direction direction) |
| { |
| return dma_map_sg(dev->dma_device, sg, nents, direction); |
| } |
| |
| /** |
| * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses |
| * @dev: The device for which the DMA addresses were created |
| * @sg: The array of scatter/gather entries |
| * @nents: The number of scatter/gather entries |
| * @direction: The direction of the DMA |
| */ |
| static inline void ib_dma_unmap_sg(struct ib_device *dev, |
| struct scatterlist *sg, int nents, |
| enum dma_data_direction direction) |
| { |
| dma_unmap_sg(dev->dma_device, sg, nents, direction); |
| } |
| |
| static inline int ib_dma_map_sg_attrs(struct ib_device *dev, |
| struct scatterlist *sg, int nents, |
| enum dma_data_direction direction, |
| unsigned long dma_attrs) |
| { |
| return dma_map_sg_attrs(dev->dma_device, sg, nents, direction, |
| dma_attrs); |
| } |
| |
| static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev, |
| struct scatterlist *sg, int nents, |
| enum dma_data_direction direction, |
| unsigned long dma_attrs) |
| { |
| dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction, dma_attrs); |
| } |
| /** |
| * ib_sg_dma_address - Return the DMA address from a scatter/gather entry |
| * @dev: The device for which the DMA addresses were created |
| * @sg: The scatter/gather entry |
| * |
| * Note: this function is obsolete. To do: change all occurrences of |
| * ib_sg_dma_address() into sg_dma_address(). |
| */ |
| static inline u64 ib_sg_dma_address(struct ib_device *dev, |
| struct scatterlist *sg) |
| { |
| return sg_dma_address(sg); |
| } |
| |
| /** |
| * ib_sg_dma_len - Return the DMA length from a scatter/gather entry |
| * @dev: The device for which the DMA addresses were created |
| * @sg: The scatter/gather entry |
| * |
| * Note: this function is obsolete. To do: change all occurrences of |
| * ib_sg_dma_len() into sg_dma_len(). |
| */ |
| static inline unsigned int ib_sg_dma_len(struct ib_device *dev, |
| struct scatterlist *sg) |
| { |
| return sg_dma_len(sg); |
| } |
| |
| /** |
| * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU |
| * @dev: The device for which the DMA address was created |
| * @addr: The DMA address |
| * @size: The size of the region in bytes |
| * @dir: The direction of the DMA |
| */ |
| static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev, |
| u64 addr, |
| size_t size, |
| enum dma_data_direction dir) |
| { |
| dma_sync_single_for_cpu(dev->dma_device, addr, size, dir); |
| } |
| |
| /** |
| * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device |
| * @dev: The device for which the DMA address was created |
| * @addr: The DMA address |
| * @size: The size of the region in bytes |
| * @dir: The direction of the DMA |
| */ |
| static inline void ib_dma_sync_single_for_device(struct ib_device *dev, |
| u64 addr, |
| size_t size, |
| enum dma_data_direction dir) |
| { |
| dma_sync_single_for_device(dev->dma_device, addr, size, dir); |
| } |
| |
| /** |
| * ib_dma_alloc_coherent - Allocate memory and map it for DMA |
| * @dev: The device for which the DMA address is requested |
| * @size: The size of the region to allocate in bytes |
| * @dma_handle: A pointer for returning the DMA address of the region |
| * @flag: memory allocator flags |
| */ |
| static inline void *ib_dma_alloc_coherent(struct ib_device *dev, |
| size_t size, |
| dma_addr_t *dma_handle, |
| gfp_t flag) |
| { |
| return dma_alloc_coherent(dev->dma_device, size, dma_handle, flag); |
| } |
| |
| /** |
| * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent() |
| * @dev: The device for which the DMA addresses were allocated |
| * @size: The size of the region |
| * @cpu_addr: the address returned by ib_dma_alloc_coherent() |
| * @dma_handle: the DMA address returned by ib_dma_alloc_coherent() |
| */ |
| static inline void ib_dma_free_coherent(struct ib_device *dev, |
| size_t size, void *cpu_addr, |
| dma_addr_t dma_handle) |
| { |
| dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle); |
| } |
| |
| /** |
| * ib_dereg_mr - Deregisters a memory region and removes it from the |
| * HCA translation table. |
| * @mr: The memory region to deregister. |
| * |
| * This function can fail, if the memory region has memory windows bound to it. |
| */ |
| int ib_dereg_mr(struct ib_mr *mr); |
| |
| struct ib_mr *ib_alloc_mr(struct ib_pd *pd, |
| enum ib_mr_type mr_type, |
| u32 max_num_sg); |
| |
| /** |
| * ib_update_fast_reg_key - updates the key portion of the fast_reg MR |
| * R_Key and L_Key. |
| * @mr - struct ib_mr pointer to be updated. |
| * @newkey - new key to be used. |
| */ |
| static inline void ib_update_fast_reg_key(struct ib_mr *mr, u8 newkey) |
| { |
| mr->lkey = (mr->lkey & 0xffffff00) | newkey; |
| mr->rkey = (mr->rkey & 0xffffff00) | newkey; |
| } |
| |
| /** |
| * ib_inc_rkey - increments the key portion of the given rkey. Can be used |
| * for calculating a new rkey for type 2 memory windows. |
| * @rkey - the rkey to increment. |
| */ |
| static inline u32 ib_inc_rkey(u32 rkey) |
| { |
|