summaryrefslogtreecommitdiffstats
path: root/include/rdma/ib_verbs.h
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /include/rdma/ib_verbs.h
parentInitial commit. (diff)
downloadlinux-upstream.tar.xz
linux-upstream.zip
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--include/rdma/ib_verbs.h4716
1 files changed, 4716 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
new file mode 100644
index 000000000..ac6ffa561
--- /dev/null
+++ b/include/rdma/ib_verbs.h
@@ -0,0 +1,4716 @@
+/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
+/*
+ * 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.
+ */
+
+#ifndef IB_VERBS_H
+#define IB_VERBS_H
+
+#include <linux/types.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/kref.h>
+#include <linux/list.h>
+#include <linux/rwsem.h>
+#include <linux/workqueue.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/refcount.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 <linux/irqflags.h>
+#include <linux/preempt.h>
+#include <linux/dim.h>
+#include <uapi/rdma/ib_user_verbs.h>
+#include <rdma/rdma_counter.h>
+#include <rdma/restrack.h>
+#include <rdma/signature.h>
+#include <uapi/rdma/rdma_user_ioctl.h>
+#include <uapi/rdma/ib_user_ioctl_verbs.h>
+
+#define IB_FW_VERSION_NAME_MAX ETHTOOL_FWVERS_LEN
+
+struct ib_umem_odp;
+struct ib_uqp_object;
+struct ib_usrq_object;
+struct ib_uwq_object;
+struct rdma_cm_id;
+
+extern struct workqueue_struct *ib_wq;
+extern struct workqueue_struct *ib_comp_wq;
+extern struct workqueue_struct *ib_comp_unbound_wq;
+
+struct ib_ucq_object;
+
+__printf(3, 4) __cold
+void ibdev_printk(const char *level, const struct ib_device *ibdev,
+ const char *format, ...);
+__printf(2, 3) __cold
+void ibdev_emerg(const struct ib_device *ibdev, const char *format, ...);
+__printf(2, 3) __cold
+void ibdev_alert(const struct ib_device *ibdev, const char *format, ...);
+__printf(2, 3) __cold
+void ibdev_crit(const struct ib_device *ibdev, const char *format, ...);
+__printf(2, 3) __cold
+void ibdev_err(const struct ib_device *ibdev, const char *format, ...);
+__printf(2, 3) __cold
+void ibdev_warn(const struct ib_device *ibdev, const char *format, ...);
+__printf(2, 3) __cold
+void ibdev_notice(const struct ib_device *ibdev, const char *format, ...);
+__printf(2, 3) __cold
+void ibdev_info(const struct ib_device *ibdev, const char *format, ...);
+
+#if defined(CONFIG_DYNAMIC_DEBUG) || \
+ (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
+#define ibdev_dbg(__dev, format, args...) \
+ dynamic_ibdev_dbg(__dev, format, ##args)
+#else
+__printf(2, 3) __cold
+static inline
+void ibdev_dbg(const struct ib_device *ibdev, const char *format, ...) {}
+#endif
+
+#define ibdev_level_ratelimited(ibdev_level, ibdev, fmt, ...) \
+do { \
+ static DEFINE_RATELIMIT_STATE(_rs, \
+ DEFAULT_RATELIMIT_INTERVAL, \
+ DEFAULT_RATELIMIT_BURST); \
+ if (__ratelimit(&_rs)) \
+ ibdev_level(ibdev, fmt, ##__VA_ARGS__); \
+} while (0)
+
+#define ibdev_emerg_ratelimited(ibdev, fmt, ...) \
+ ibdev_level_ratelimited(ibdev_emerg, ibdev, fmt, ##__VA_ARGS__)
+#define ibdev_alert_ratelimited(ibdev, fmt, ...) \
+ ibdev_level_ratelimited(ibdev_alert, ibdev, fmt, ##__VA_ARGS__)
+#define ibdev_crit_ratelimited(ibdev, fmt, ...) \
+ ibdev_level_ratelimited(ibdev_crit, ibdev, fmt, ##__VA_ARGS__)
+#define ibdev_err_ratelimited(ibdev, fmt, ...) \
+ ibdev_level_ratelimited(ibdev_err, ibdev, fmt, ##__VA_ARGS__)
+#define ibdev_warn_ratelimited(ibdev, fmt, ...) \
+ ibdev_level_ratelimited(ibdev_warn, ibdev, fmt, ##__VA_ARGS__)
+#define ibdev_notice_ratelimited(ibdev, fmt, ...) \
+ ibdev_level_ratelimited(ibdev_notice, ibdev, fmt, ##__VA_ARGS__)
+#define ibdev_info_ratelimited(ibdev, fmt, ...) \
+ ibdev_level_ratelimited(ibdev_info, ibdev, fmt, ##__VA_ARGS__)
+
+#if defined(CONFIG_DYNAMIC_DEBUG) || \
+ (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
+/* descriptor check is first to prevent flooding with "callbacks suppressed" */
+#define ibdev_dbg_ratelimited(ibdev, fmt, ...) \
+do { \
+ static DEFINE_RATELIMIT_STATE(_rs, \
+ DEFAULT_RATELIMIT_INTERVAL, \
+ DEFAULT_RATELIMIT_BURST); \
+ DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
+ if (DYNAMIC_DEBUG_BRANCH(descriptor) && __ratelimit(&_rs)) \
+ __dynamic_ibdev_dbg(&descriptor, ibdev, fmt, \
+ ##__VA_ARGS__); \
+} while (0)
+#else
+__printf(2, 3) __cold
+static inline
+void ibdev_dbg_ratelimited(const struct ib_device *ibdev, const char *format, ...) {}
+#endif
+
+union ib_gid {
+ u8 raw[16];
+ struct {
+ __be64 subnet_prefix;
+ __be64 interface_id;
+ } global;
+};
+
+extern union ib_gid zgid;
+
+enum ib_gid_type {
+ IB_GID_TYPE_IB = IB_UVERBS_GID_TYPE_IB,
+ IB_GID_TYPE_ROCE = IB_UVERBS_GID_TYPE_ROCE_V1,
+ IB_GID_TYPE_ROCE_UDP_ENCAP = IB_UVERBS_GID_TYPE_ROCE_V2,
+ IB_GID_TYPE_SIZE
+};
+
+#define ROCE_V2_UDP_DPORT 4791
+struct ib_gid_attr {
+ struct net_device __rcu *ndev;
+ struct ib_device *device;
+ union ib_gid gid;
+ enum ib_gid_type gid_type;
+ u16 index;
+ u8 port_num;
+};
+
+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,
+ RDMA_TRANSPORT_UNSPECIFIED,
+};
+
+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(unsigned int node_type);
+
+enum rdma_network_type {
+ RDMA_NETWORK_IB,
+ RDMA_NETWORK_ROCE_V1,
+ 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;
+ else if (network_type == RDMA_NETWORK_ROCE_V1)
+ return IB_GID_TYPE_ROCE;
+ else
+ return IB_GID_TYPE_IB;
+}
+
+static inline enum rdma_network_type
+rdma_gid_attr_network_type(const struct ib_gid_attr *attr)
+{
+ if (attr->gid_type == IB_GID_TYPE_IB)
+ return RDMA_NETWORK_IB;
+
+ if (attr->gid_type == IB_GID_TYPE_ROCE)
+ return RDMA_NETWORK_ROCE_V1;
+
+ if (ipv6_addr_v4mapped((struct in6_addr *)&attr->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_INTEGRITY_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 = (1ULL << 35),
+ /* The device supports padding incoming writes to cacheline. */
+ IB_DEVICE_PCI_WRITE_END_PADDING = (1ULL << 36),
+ IB_DEVICE_ALLOW_USER_UNREG = (1ULL << 37),
+};
+
+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,
+ IB_ODP_SUPPORT_SRQ_RECV = 1 << 5,
+};
+
+struct ib_odp_caps {
+ uint64_t general_caps;
+ struct {
+ uint32_t rc_odp_caps;
+ uint32_t uc_odp_caps;
+ uint32_t ud_odp_caps;
+ uint32_t xrc_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 with rendezvous offload for RC transport */
+ IB_TM_CAP_RNDV_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;
+};
+
+struct ib_cq_init_attr {
+ unsigned int cqe;
+ u32 comp_vector;
+ u32 flags;
+};
+
+enum ib_cq_attr_mask {
+ IB_CQ_MODERATE = 1 << 0,
+};
+
+struct ib_cq_caps {
+ u16 max_cq_moderation_count;
+ u16 max_cq_moderation_period;
+};
+
+struct ib_dm_mr_attr {
+ u64 length;
+ u64 offset;
+ u32 access_flags;
+};
+
+struct ib_dm_alloc_attr {
+ u64 length;
+ u32 alignment;
+ 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_send_sge;
+ int max_recv_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_srq;
+ int max_srq_wr;
+ int max_srq_sge;
+ unsigned int max_fast_reg_page_list_len;
+ unsigned int max_pi_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;
+ struct ib_cq_caps cq_caps;
+ u64 max_dm_size;
+ /* Max entries for sgl for optimized performance per READ */
+ u32 max_sgl_rd;
+};
+
+enum ib_mtu {
+ IB_MTU_256 = 1,
+ IB_MTU_512 = 2,
+ IB_MTU_1024 = 3,
+ IB_MTU_2048 = 4,
+ IB_MTU_4096 = 5
+};
+
+enum opa_mtu {
+ OPA_MTU_8192 = 6,
+ OPA_MTU_10240 = 7
+};
+
+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;
+}
+
+static inline int opa_mtu_enum_to_int(enum opa_mtu mtu)
+{
+ switch (mtu) {
+ case OPA_MTU_8192:
+ return 8192;
+ case OPA_MTU_10240:
+ return 10240;
+ default:
+ return(ib_mtu_enum_to_int((enum ib_mtu)mtu));
+ }
+}
+
+static inline enum opa_mtu opa_mtu_int_to_enum(int mtu)
+{
+ if (mtu >= 10240)
+ return OPA_MTU_10240;
+ else if (mtu >= 8192)
+ return OPA_MTU_8192;
+ else
+ return ((enum opa_mtu)ib_mtu_int_to_enum(mtu));
+}
+
+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_phys_state {
+ IB_PORT_PHYS_STATE_SLEEP = 1,
+ IB_PORT_PHYS_STATE_POLLING = 2,
+ IB_PORT_PHYS_STATE_DISABLED = 3,
+ IB_PORT_PHYS_STATE_PORT_CONFIGURATION_TRAINING = 4,
+ IB_PORT_PHYS_STATE_LINK_UP = 5,
+ IB_PORT_PHYS_STATE_LINK_ERROR_RECOVERY = 6,
+ IB_PORT_PHYS_STATE_PHY_TEST = 7,
+};
+
+enum ib_port_width {
+ IB_WIDTH_1X = 1,
+ IB_WIDTH_2X = 16,
+ 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_2X: return 2;
+ 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,
+ IB_SPEED_NDR = 128,
+};
+
+/**
+ * struct rdma_hw_stats
+ * @lock - Mutex to protect parallel write access to lifespan and values
+ * of counters, which are 64bits and not guaranteeed to be written
+ * atomicaly on 32bits systems.
+ * @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 {
+ struct mutex lock; /* Protect lifespan and values[] */
+ 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
+#define RDMA_CORE_CAP_IB_GRH_REQUIRED 0x00008000
+
+/* 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_IB_GRH_REQUIRED (RDMA_CORE_CAP_IB_GRH_REQUIRED \
+ | RDMA_CORE_CAP_PROT_ROCE \
+ | RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP)
+
+#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;
+ u32 phys_mtu;
+ int gid_tbl_len;
+ unsigned int ip_gids:1;
+ /* This is the value from PortInfo CapabilityMask, defined by IBA */
+ 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;
+ u16 active_speed;
+ u8 phys_state;
+ u16 port_cap_flags2;
+};
+
+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 {
+ const struct ib_gid_attr *sgid_attr;
+ 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_28_GBPS = 19,
+ IB_RATE_50_GBPS = 20,
+ IB_RATE_400_GBPS = 21,
+ IB_RATE_600_GBPS = 22,
+};
+
+/**
+ * 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_SG_GAPS: memory region that is capable to
+ * register any arbitrary sg lists (without
+ * the normal mr constraints - see
+ * ib_map_mr_sg)
+ * @IB_MR_TYPE_DM: memory region that is used for device
+ * memory registration
+ * @IB_MR_TYPE_USER: memory region that is used for the user-space
+ * application
+ * @IB_MR_TYPE_DMA: memory region that is used for DMA operations
+ * without address translations (VA=PA)
+ * @IB_MR_TYPE_INTEGRITY: memory region that is used for
+ * data integrity operations
+ */
+enum ib_mr_type {
+ IB_MR_TYPE_MEM_REG,
+ IB_MR_TYPE_SG_GAPS,
+ IB_MR_TYPE_DM,
+ IB_MR_TYPE_USER,
+ IB_MR_TYPE_DMA,
+ IB_MR_TYPE_INTEGRITY,
+};
+
+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);
+
+struct rdma_ah_init_attr {
+ struct rdma_ah_attr *ah_attr;
+ u32 flags;
+ struct net_device *xmit_slave;
+};
+
+enum rdma_ah_attr_type {
+ RDMA_AH_ATTR_TYPE_UNDEFINED,
+ 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_UVERBS_WC_SEND,
+ IB_WC_RDMA_WRITE = IB_UVERBS_WC_RDMA_WRITE,
+ IB_WC_RDMA_READ = IB_UVERBS_WC_RDMA_READ,
+ IB_WC_COMP_SWAP = IB_UVERBS_WC_COMP_SWAP,
+ IB_WC_FETCH_ADD = IB_UVERBS_WC_FETCH_ADD,
+ IB_WC_BIND_MW = IB_UVERBS_WC_BIND_MW,
+ IB_WC_LOCAL_INV = IB_UVERBS_WC_LOCAL_INV,
+ IB_WC_LSO = IB_UVERBS_WC_TSO,
+ 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;
+ u32 slid;
+ int wc_flags;
+ u16 pkey_index;
+ 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_UVERBS_SRQT_BASIC,
+ IB_SRQT_XRC = IB_UVERBS_SRQT_XRC,
+ IB_SRQT_TM = IB_UVERBS_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_UVERBS_QPT_RC,
+ IB_QPT_UC = IB_UVERBS_QPT_UC,
+ IB_QPT_UD = IB_UVERBS_QPT_UD,
+ IB_QPT_RAW_IPV6,
+ IB_QPT_RAW_ETHERTYPE,
+ IB_QPT_RAW_PACKET = IB_UVERBS_QPT_RAW_PACKET,
+ IB_QPT_XRC_INI = IB_UVERBS_QPT_XRC_INI,
+ IB_QPT_XRC_TGT = IB_UVERBS_QPT_XRC_TGT,
+ IB_QPT_MAX,
+ IB_QPT_DRIVER = IB_UVERBS_QPT_DRIVER,
+ /* 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 =
+ IB_UVERBS_QP_CREATE_BLOCK_MULTICAST_LOOPBACK,
+ 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_INTEGRITY_EN = 1 << 6,
+ IB_QP_CREATE_NETDEV_USE = 1 << 7,
+ IB_QP_CREATE_SCATTER_FCS =
+ IB_UVERBS_QP_CREATE_SCATTER_FCS,
+ IB_QP_CREATE_CVLAN_STRIPPING =
+ IB_UVERBS_QP_CREATE_CVLAN_STRIPPING,
+ IB_QP_CREATE_SOURCE_QPN = 1 << 10,
+ IB_QP_CREATE_PCI_WRITE_END_PADDING =
+ IB_UVERBS_QP_CREATE_PCI_WRITE_END_PADDING,
+ /* 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 {
+ /* Consumer's event_handler callback must not block */
+ 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;
+ u32 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;
+ struct net_device *xmit_slave;
+};
+
+enum ib_wr_opcode {
+ /* These are shared with userspace */
+ IB_WR_RDMA_WRITE = IB_UVERBS_WR_RDMA_WRITE,
+ IB_WR_RDMA_WRITE_WITH_IMM = IB_UVERBS_WR_RDMA_WRITE_WITH_IMM,
+ IB_WR_SEND = IB_UVERBS_WR_SEND,
+ IB_WR_SEND_WITH_IMM = IB_UVERBS_WR_SEND_WITH_IMM,
+ IB_WR_RDMA_READ = IB_UVERBS_WR_RDMA_READ,
+ IB_WR_ATOMIC_CMP_AND_SWP = IB_UVERBS_WR_ATOMIC_CMP_AND_SWP,
+ IB_WR_ATOMIC_FETCH_AND_ADD = IB_UVERBS_WR_ATOMIC_FETCH_AND_ADD,
+ IB_WR_BIND_MW = IB_UVERBS_WR_BIND_MW,
+ IB_WR_LSO = IB_UVERBS_WR_TSO,
+ IB_WR_SEND_WITH_INV = IB_UVERBS_WR_SEND_WITH_INV,
+ IB_WR_RDMA_READ_WITH_INV = IB_UVERBS_WR_RDMA_READ_WITH_INV,
+ IB_WR_LOCAL_INV = IB_UVERBS_WR_LOCAL_INV,
+ IB_WR_MASKED_ATOMIC_CMP_AND_SWP =
+ IB_UVERBS_WR_MASKED_ATOMIC_CMP_AND_SWP,
+ IB_WR_MASKED_ATOMIC_FETCH_AND_ADD =
+ IB_UVERBS_WR_MASKED_ATOMIC_FETCH_AND_ADD,
+
+ /* These are kernel only and can not be issued by userspace */
+ IB_WR_REG_MR = 0x20,
+ IB_WR_REG_MR_INTEGRITY,
+
+ /* 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 const struct ib_rdma_wr *rdma_wr(const 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 const struct ib_atomic_wr *atomic_wr(const 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 const struct ib_ud_wr *ud_wr(const 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 const struct ib_reg_wr *reg_wr(const struct ib_send_wr *wr)
+{
+ return container_of(wr, struct ib_reg_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 = IB_UVERBS_ACCESS_LOCAL_WRITE,
+ IB_ACCESS_REMOTE_WRITE = IB_UVERBS_ACCESS_REMOTE_WRITE,
+ IB_ACCESS_REMOTE_READ = IB_UVERBS_ACCESS_REMOTE_READ,
+ IB_ACCESS_REMOTE_ATOMIC = IB_UVERBS_ACCESS_REMOTE_ATOMIC,
+ IB_ACCESS_MW_BIND = IB_UVERBS_ACCESS_MW_BIND,
+ IB_ZERO_BASED = IB_UVERBS_ACCESS_ZERO_BASED,
+ IB_ACCESS_ON_DEMAND = IB_UVERBS_ACCESS_ON_DEMAND,
+ IB_ACCESS_HUGETLB = IB_UVERBS_ACCESS_HUGETLB,
+ IB_ACCESS_RELAXED_ORDERING = IB_UVERBS_ACCESS_RELAXED_ORDERING,
+
+ IB_ACCESS_OPTIONAL = IB_UVERBS_ACCESS_OPTIONAL_RANGE,
+ IB_ACCESS_SUPPORTED =
+ ((IB_ACCESS_HUGETLB << 1) - 1) | IB_ACCESS_OPTIONAL,
+};
+
+/*
+ * 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_umem;
+
+enum rdma_remove_reason {
+ /*
+ * Userspace requested uobject deletion or initial try
+ * to remove uobject via cleanup. 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,
+ /* uobj is being cleaned-up before being committed */
+ RDMA_REMOVE_ABORT,
+};
+
+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;
+
+ bool cleanup_retryable;
+
+ struct ib_rdmacg_object cg_obj;
+ /*
+ * Implementation details of the RDMA core, don't use in drivers:
+ */
+ struct rdma_restrack_entry res;
+ struct xarray mmap_xa;
+};
+
+struct ib_uobject {
+ u64 user_handle; /* handle given to us by userspace */
+ /* ufile & ucontext owning this object */
+ struct ib_uverbs_file *ufile;
+ /* FIXME, save memory: ufile->context == context */
+ 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_api_object *uapi_object;
+};
+
+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 rdma_restrack_entry res;
+};
+
+struct ib_xrcd {
+ struct ib_device *device;
+ atomic_t usecnt; /* count all exposed resources */
+ struct inode *inode;
+ struct rw_semaphore tgt_qps_rwsem;
+ struct xarray tgt_qps;
+};
+
+struct ib_ah {
+ struct ib_device *device;
+ struct ib_pd *pd;
+ struct ib_uobject *uobject;
+ const struct ib_gid_attr *sgid_attr;
+ enum rdma_ah_attr_type type;
+};
+
+typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
+
+enum ib_poll_context {
+ IB_POLL_SOFTIRQ, /* poll from softirq context */
+ IB_POLL_WORKQUEUE, /* poll from workqueue */
+ IB_POLL_UNBOUND_WORKQUEUE, /* poll from unbound workqueue */
+ IB_POLL_LAST_POOL_TYPE = IB_POLL_UNBOUND_WORKQUEUE,
+
+ IB_POLL_DIRECT, /* caller context, no hw completions */
+};
+
+struct ib_cq {
+ struct ib_device *device;
+ struct ib_ucq_object *uobject;
+ ib_comp_handler comp_handler;
+ void (*event_handler)(struct ib_event *, void *);
+ void *cq_context;
+ int cqe;
+ unsigned int cqe_used;
+ atomic_t usecnt; /* count number of work queues */
+ enum ib_poll_context poll_ctx;
+ struct ib_wc *wc;
+ struct list_head pool_entry;
+ union {
+ struct irq_poll iop;
+ struct work_struct work;
+ };
+ struct workqueue_struct *comp_wq;
+ struct dim *dim;
+
+ /* updated only by trace points */
+ ktime_t timestamp;
+ u8 interrupt:1;
+ u8 shared:1;
+ unsigned int comp_vector;
+
+ /*
+ * Implementation details of the RDMA core, don't use in drivers:
+ */
+ struct rdma_restrack_entry res;
+};
+
+struct ib_srq {
+ struct ib_device *device;
+ struct ib_pd *pd;
+ struct ib_usrq_object *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 = IB_UVERBS_WQT_RQ,
+};
+
+enum ib_wq_state {
+ IB_WQS_RESET,
+ IB_WQS_RDY,
+ IB_WQS_ERR
+};
+
+struct ib_wq {
+ struct ib_device *device;
+ struct ib_uwq_object *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 = IB_UVERBS_WQ_FLAGS_CVLAN_STRIPPING,
+ IB_WQ_FLAGS_SCATTER_FCS = IB_UVERBS_WQ_FLAGS_SCATTER_FCS,
+ IB_WQ_FLAGS_DELAY_DROP = IB_UVERBS_WQ_FLAGS_DELAY_DROP,
+ IB_WQ_FLAGS_PCI_WRITE_END_PADDING =
+ IB_UVERBS_WQ_FLAGS_PCI_WRITE_END_PADDING,
+};
+
+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_uqp_object *uobject;
+ void (*event_handler)(struct ib_event *, void *);
+ void *qp_context;
+ /* sgid_attrs associated with the AV's */
+ const struct ib_gid_attr *av_sgid_attr;
+ const struct ib_gid_attr *alt_path_sgid_attr;
+ 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;
+
+ bool integrity_en;
+ /*
+ * Implementation details of the RDMA core, don't use in drivers:
+ */
+ struct rdma_restrack_entry res;
+
+ /* The counter the qp is bind to */
+ struct rdma_counter *counter;
+};
+
+struct ib_dm {
+ struct ib_device *device;
+ u32 length;
+ u32 flags;
+ struct ib_uobject *uobject;
+ atomic_t usecnt;
+};
+
+struct ib_mr {
+ struct ib_device *device;
+ struct ib_pd *pd;
+ u32 lkey;
+ u32 rkey;
+ u64 iova;
+ u64 length;
+ unsigned int page_size;
+ enum ib_mr_type type;
+ bool need_inval;
+ union {
+ struct ib_uobject *uobject; /* user */
+ struct list_head qp_entry; /* FR */
+ };
+
+ struct ib_dm *dm;
+ struct ib_sig_attrs *sig_attrs; /* only for IB_MR_TYPE_INTEGRITY MRs */
+ /*
+ * Implementation details of the RDMA core, don't use in drivers:
+ */
+ struct rdma_restrack_entry res;
+};
+
+struct ib_mw {
+ struct ib_device *device;
+ struct ib_pd *pd;
+ struct ib_uobject *uobject;
+ u32 rkey;
+ enum ib_mw_type type;
+};
+
+/* 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,
+ IB_FLOW_SPEC_ESP = 0x34,
+ /* L4 headers*/
+ IB_FLOW_SPEC_TCP = 0x40,
+ IB_FLOW_SPEC_UDP = 0x41,
+ IB_FLOW_SPEC_VXLAN_TUNNEL = 0x50,
+ IB_FLOW_SPEC_GRE = 0x51,
+ IB_FLOW_SPEC_MPLS = 0x60,
+ IB_FLOW_SPEC_INNER = 0x100,
+ /* Actions */
+ IB_FLOW_SPEC_ACTION_TAG = 0x1000,
+ IB_FLOW_SPEC_ACTION_DROP = 0x1001,
+ IB_FLOW_SPEC_ACTION_HANDLE = 0x1002,
+ IB_FLOW_SPEC_ACTION_COUNT = 0x1003,
+};
+#define IB_FLOW_SPEC_LAYER_MASK 0xF0
+#define IB_FLOW_SPEC_SUPPORT_LAYERS 10
+
+enum ib_flow_flags {
+ IB_FLOW_ATTR_FLAGS_DONT_TRAP = 1UL << 1, /* Continue match, no steal */
+ IB_FLOW_ATTR_FLAGS_EGRESS = 1UL << 2, /* Egress flow */
+ IB_FLOW_ATTR_FLAGS_RESERVED = 1UL << 3 /* 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[];
+};
+
+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[];
+};
+
+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[];
+};
+
+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[];
+};
+
+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[];
+};
+
+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[];
+};
+
+/* 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_esp_filter {
+ __be32 spi;
+ __be32 seq;
+ /* Must be last */
+ u8 real_sz[];
+};
+
+struct ib_flow_spec_esp {
+ u32 type;
+ u16 size;
+ struct ib_flow_esp_filter val;
+ struct ib_flow_esp_filter mask;
+};
+
+struct ib_flow_gre_filter {
+ __be16 c_ks_res0_ver;
+ __be16 protocol;
+ __be32 key;
+ /* Must be last */
+ u8 real_sz[];
+};
+
+struct ib_flow_spec_gre {
+ u32 type;
+ u16 size;
+ struct ib_flow_gre_filter val;
+ struct ib_flow_gre_filter mask;
+};
+
+struct ib_flow_mpls_filter {
+ __be32 tag;
+ /* Must be last */
+ u8 real_sz[];
+};
+
+struct ib_flow_spec_mpls {
+ u32 type;
+ u16 size;
+ struct ib_flow_mpls_filter val;
+ struct ib_flow_mpls_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;
+};
+
+struct ib_flow_spec_action_handle {
+ enum ib_flow_spec_type type;
+ u16 size;
+ struct ib_flow_action *act;
+};
+
+enum ib_counters_description {
+ IB_COUNTER_PACKETS,
+ IB_COUNTER_BYTES,
+};
+
+struct ib_flow_spec_action_count {
+ enum ib_flow_spec_type type;
+ u16 size;
+ struct ib_counters *counters;
+};
+
+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_esp esp;
+ struct ib_flow_spec_gre gre;
+ struct ib_flow_spec_mpls mpls;
+ struct ib_flow_spec_action_tag flow_tag;
+ struct ib_flow_spec_action_drop drop;
+ struct ib_flow_spec_action_handle action;
+ struct ib_flow_spec_action_count flow_count;
+};
+
+struct ib_flow_attr {
+ enum ib_flow_attr_type type;
+ u16 size;
+ u16 priority;
+ u32 flags;
+ u8 num_of_specs;
+ u8 port;
+ union ib_flow_spec flows[];
+};
+
+struct ib_flow {
+ struct ib_qp *qp;
+ struct ib_device *device;
+ struct ib_uobject *uobject;
+};
+
+enum ib_flow_action_type {
+ IB_FLOW_ACTION_UNSPECIFIED,
+ IB_FLOW_ACTION_ESP = 1,
+};
+
+struct ib_flow_action_attrs_esp_keymats {
+ enum ib_uverbs_flow_action_esp_keymat protocol;
+ union {
+ struct ib_uverbs_flow_action_esp_keymat_aes_gcm aes_gcm;
+ } keymat;
+};
+
+struct ib_flow_action_attrs_esp_replays {
+ enum ib_uverbs_flow_action_esp_replay protocol;
+ union {
+ struct ib_uverbs_flow_action_esp_replay_bmp bmp;
+ } replay;
+};
+
+enum ib_flow_action_attrs_esp_flags {
+ /* All user-space flags at the top: Use enum ib_uverbs_flow_action_esp_flags
+ * This is done in order to share the same flags between user-space and
+ * kernel and spare an unnecessary translation.
+ */
+
+ /* Kernel flags */
+ IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED = 1ULL << 32,
+ IB_FLOW_ACTION_ESP_FLAGS_MOD_ESP_ATTRS = 1ULL << 33,
+};
+
+struct ib_flow_spec_list {
+ struct ib_flow_spec_list *next;
+ union ib_flow_spec spec;
+};
+
+struct ib_flow_action_attrs_esp {
+ struct ib_flow_action_attrs_esp_keymats *keymat;
+ struct ib_flow_action_attrs_esp_replays *replay;
+ struct ib_flow_spec_list *encap;
+ /* Used only if IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED is enabled.
+ * Value of 0 is a valid value.
+ */
+ u32 esn;
+ u32 spi;
+ u32 seq;
+ u32 tfc_pad;
+ /* Use enum ib_flow_action_attrs_esp_flags */
+ u64 flags;
+ u64 hard_limit_pkts;
+};
+
+struct ib_flow_action {
+ struct ib_device *device;
+ struct ib_uobject *uobject;
+ enum ib_flow_action_type type;
+ atomic_t usecnt;
+};
+
+struct ib_mad;
+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_port_immutable {
+ int pkey_tbl_len;
+ int gid_tbl_len;
+ u32 core_cap_flags;
+ u32 max_mad_size;
+};
+
+struct ib_port_data {
+ struct ib_device *ib_dev;
+
+ struct ib_port_immutable immutable;
+
+ spinlock_t pkey_list_lock;
+ struct list_head pkey_list;
+
+ struct ib_port_cache cache;
+
+ spinlock_t netdev_lock;
+ struct net_device __rcu *netdev;
+ struct hlist_node ndev_hash_link;
+ struct rdma_port_counter port_counter;
+ struct rdma_hw_stats *hw_stats;
+};
+
+/* 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;
+ int mtu;
+
+ /*
+ * cleanup function must be specified.
+ * FIXME: This is only used for OPA_VNIC and that usage should be
+ * removed too.
+ */
+ 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 rdma_netdev_alloc_params {
+ size_t sizeof_priv;
+ unsigned int txqs;
+ unsigned int rxqs;
+ void *param;
+
+ int (*initialize_rdma_netdev)(struct ib_device *device, u8 port_num,
+ struct net_device *netdev, void *param);
+};
+
+struct ib_odp_counters {
+ atomic64_t faults;
+ atomic64_t invalidations;
+ atomic64_t prefetch;
+};
+
+struct ib_counters {
+ struct ib_device *device;
+ struct ib_uobject *uobject;
+ /* num of objects attached */
+ atomic_t usecnt;
+};
+
+struct ib_counters_read_attr {
+ u64 *counters_buff;
+ u32 ncounters;
+ u32 flags; /* use enum ib_read_counters_flags */
+};
+
+struct uverbs_attr_bundle;
+struct iw_cm_id;
+struct iw_cm_conn_param;
+
+#define INIT_RDMA_OBJ_SIZE(ib_struct, drv_struct, member) \
+ .size_##ib_struct = \
+ (sizeof(struct drv_struct) + \
+ BUILD_BUG_ON_ZERO(offsetof(struct drv_struct, member)) + \
+ BUILD_BUG_ON_ZERO( \
+ !__same_type(((struct drv_struct *)NULL)->member, \
+ struct ib_struct)))
+
+#define rdma_zalloc_drv_obj_gfp(ib_dev, ib_type, gfp) \
+ ((struct ib_type *)kzalloc(ib_dev->ops.size_##ib_type, gfp))
+
+#define rdma_zalloc_drv_obj(ib_dev, ib_type) \
+ rdma_zalloc_drv_obj_gfp(ib_dev, ib_type, GFP_KERNEL)
+
+#define DECLARE_RDMA_OBJ_SIZE(ib_struct) size_t size_##ib_struct
+
+struct rdma_user_mmap_entry {
+ struct kref ref;
+ struct ib_ucontext *ucontext;
+ unsigned long start_pgoff;
+ size_t npages;
+ bool driver_removed;
+};
+
+/* Return the offset (in bytes) the user should pass to libc's mmap() */
+static inline u64
+rdma_user_mmap_get_offset(const struct rdma_user_mmap_entry *entry)
+{
+ return (u64)entry->start_pgoff << PAGE_SHIFT;
+}
+
+/**
+ * struct ib_device_ops - InfiniBand device operations
+ * This structure defines all the InfiniBand device operations, providers will
+ * need to define the supported operations, otherwise they will be set to null.
+ */
+struct ib_device_ops {
+ struct module *owner;
+ enum rdma_driver_id driver_id;
+ u32 uverbs_abi_ver;
+ unsigned int uverbs_no_driver_id_binding:1;
+
+ int (*post_send)(struct ib_qp *qp, const struct ib_send_wr *send_wr,
+ const struct ib_send_wr **bad_send_wr);
+ int (*post_recv)(struct ib_qp *qp, const struct ib_recv_wr *recv_wr,
+ const struct ib_recv_wr **bad_recv_wr);
+ void (*drain_rq)(struct ib_qp *qp);
+ void (*drain_sq)(struct ib_qp *qp);
+ 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);
+ int (*post_srq_recv)(struct ib_srq *srq,
+ const struct ib_recv_wr *recv_wr,
+ const struct ib_recv_wr **bad_recv_wr);
+ 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 *in_mad, struct ib_mad *out_mad,
+ size_t *out_mad_size, u16 *out_mad_pkey_index);
+ int (*query_device)(struct ib_device *device,
+ struct ib_device_attr *device_attr,
+ struct ib_udata *udata);
+ int (*modify_device)(struct ib_device *device, int device_modify_mask,
+ struct ib_device_modify *device_modify);
+ void (*get_dev_fw_str)(struct ib_device *device, char *str);
+ const struct cpumask *(*get_vector_affinity)(struct ib_device *ibdev,
+ int comp_vector);
+ int (*query_port)(struct ib_device *device, u8 port_num,
+ struct ib_port_attr *port_attr);
+ int (*modify_port)(struct ib_device *device, u8 port_num,
+ int port_modify_mask,
+ struct ib_port_modify *port_modify);
+ /**
+ * 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 *device, u8 port_num,
+ struct ib_port_immutable *immutable);
+ 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 has finished
+ * NETDEV_UNREGISTER state.
+ */
+ struct net_device *(*get_netdev)(struct ib_device *device, u8 port_num);
+ /**
+ * rdma netdev operation
+ *
+ * Driver implementing alloc_rdma_netdev or rdma_netdev_get_params
+ * must return -EOPNOTSUPP if it doesn't support the specified 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 *));
+
+ int (*rdma_netdev_get_params)(struct ib_device *device, u8 port_num,
+ enum rdma_netdev_t type,
+ struct rdma_netdev_alloc_params *params);
+ /**
+ * query_gid should be return GID value for @device, when @port_num
+ * link layer is either IB or iWarp. It is no-op if @port_num port
+ * is RoCE link layer.
+ */
+ 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 of port at gid index available at @attr. 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 driver 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)(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 gid_index of port port_num
+ * available in @attr.
+ * 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)(const struct ib_gid_attr *attr, void **context);
+ int (*query_pkey)(struct ib_device *device, u8 port_num, u16 index,
+ u16 *pkey);
+ int (*alloc_ucontext)(struct ib_ucontext *context,
+ struct ib_udata *udata);
+ void (*dealloc_ucontext)(struct ib_ucontext *context);
+ int (*mmap)(struct ib_ucontext *context, struct vm_area_struct *vma);
+ /**
+ * This will be called once refcount of an entry in mmap_xa reaches
+ * zero. The type of the memory that was mapped may differ between
+ * entries and is opaque to the rdma_user_mmap interface.
+ * Therefore needs to be implemented by the driver in mmap_free.
+ */
+ void (*mmap_free)(struct rdma_user_mmap_entry *entry);
+ void (*disassociate_ucontext)(struct ib_ucontext *ibcontext);
+ int (*alloc_pd)(struct ib_pd *pd, struct ib_udata *udata);
+ int (*dealloc_pd)(struct ib_pd *pd, struct ib_udata *udata);
+ int (*create_ah)(struct ib_ah *ah, struct rdma_ah_init_attr *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, u32 flags);
+ int (*create_srq)(struct ib_srq *srq,
+ 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, struct ib_udata *udata);
+ 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, struct ib_udata *udata);
+ int (*create_cq)(struct ib_cq *cq, const struct ib_cq_init_attr *attr,
+ struct ib_udata *udata);
+ int (*modify_cq)(struct ib_cq *cq, u16 cq_count, u16 cq_period);
+ int (*destroy_cq)(struct ib_cq *cq, struct ib_udata *udata);
+ int (*resize_cq)(struct ib_cq *cq, int cqe, struct ib_udata *udata);
+ 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_udata *udata);
+ struct ib_mr *(*alloc_mr)(struct ib_pd *pd, enum ib_mr_type mr_type,
+ u32 max_num_sg);
+ struct ib_mr *(*alloc_mr_integrity)(struct ib_pd *pd,
+ u32 max_num_data_sg,
+ u32 max_num_meta_sg);
+ int (*advise_mr)(struct ib_pd *pd,
+ enum ib_uverbs_advise_mr_advice advice, u32 flags,
+ struct ib_sge *sg_list, u32 num_sge,
+ struct uverbs_attr_bundle *attrs);
+ int (*map_mr_sg)(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
+ unsigned int *sg_offset);
+ int (*check_mr_status)(struct ib_mr *mr, u32 check_mask,
+ struct ib_mr_status *mr_status);
+ int (*alloc_mw)(struct ib_mw *mw, struct ib_udata *udata);
+ int (*dealloc_mw)(struct ib_mw *mw);
+ 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 (*alloc_xrcd)(struct ib_xrcd *xrcd, struct ib_udata *udata);
+ int (*dealloc_xrcd)(struct ib_xrcd *xrcd, struct ib_udata *udata);
+ struct ib_flow *(*create_flow)(struct ib_qp *qp,
+ struct ib_flow_attr *flow_attr,
+ struct ib_udata *udata);
+ int (*destroy_flow)(struct ib_flow *flow_id);
+ struct ib_flow_action *(*create_flow_action_esp)(
+ struct ib_device *device,
+ const struct ib_flow_action_attrs_esp *attr,
+ struct uverbs_attr_bundle *attrs);
+ int (*destroy_flow_action)(struct ib_flow_action *action);
+ int (*modify_flow_action_esp)(
+ struct ib_flow_action *action,
+ const struct ib_flow_action_attrs_esp *attr,
+ struct uverbs_attr_bundle *attrs);
+ 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 (*get_vf_guid)(struct ib_device *device, int vf, u8 port,
+ struct ifla_vf_guid *node_guid,
+ struct ifla_vf_guid *port_guid);
+ 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, struct ib_udata *udata);
+ int (*modify_wq)(struct ib_wq *wq, struct ib_wq_attr *attr,
+ u32 wq_attr_mask, struct ib_udata *udata);
+ int (*create_rwq_ind_table)(struct ib_rwq_ind_table *ib_rwq_ind_table,
+ 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);
+ struct ib_dm *(*alloc_dm)(struct ib_device *device,
+ struct ib_ucontext *context,
+ struct ib_dm_alloc_attr *attr,
+ struct uverbs_attr_bundle *attrs);
+ int (*dealloc_dm)(struct ib_dm *dm, struct uverbs_attr_bundle *attrs);
+ struct ib_mr *(*reg_dm_mr)(struct ib_pd *pd, struct ib_dm *dm,
+ struct ib_dm_mr_attr *attr,
+ struct uverbs_attr_bundle *attrs);
+ int (*create_counters)(struct ib_counters *counters,
+ struct uverbs_attr_bundle *attrs);
+ int (*destroy_counters)(struct ib_counters *counters);
+ int (*read_counters)(struct ib_counters *counters,
+ struct ib_counters_read_attr *counters_read_attr,
+ struct uverbs_attr_bundle *attrs);
+ int (*map_mr_sg_pi)(struct ib_mr *mr, struct scatterlist *data_sg,
+ int data_sg_nents, unsigned int *data_sg_offset,
+ struct scatterlist *meta_sg, int meta_sg_nents,
+ unsigned int *meta_sg_offset);
+
+ /**
+ * 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);
+ /*
+ * This function is called once for each port when a ib device is
+ * registered.
+ */
+ int (*init_port)(struct ib_device *device, u8 port_num,
+ struct kobject *port_sysfs);
+ /**
+ * Allows rdma drivers to add their own restrack attributes.
+ */
+ int (*fill_res_mr_entry)(struct sk_buff *msg, struct ib_mr *ibmr);
+ int (*fill_res_mr_entry_raw)(struct sk_buff *msg, struct ib_mr *ibmr);
+ int (*fill_res_cq_entry)(struct sk_buff *msg, struct ib_cq *ibcq);
+ int (*fill_res_cq_entry_raw)(struct sk_buff *msg, struct ib_cq *ibcq);
+ int (*fill_res_qp_entry)(struct sk_buff *msg, struct ib_qp *ibqp);
+ int (*fill_res_qp_entry_raw)(struct sk_buff *msg, struct ib_qp *ibqp);
+ int (*fill_res_cm_id_entry)(struct sk_buff *msg, struct rdma_cm_id *id);
+
+ /* Device lifecycle callbacks */
+ /*
+ * Called after the device becomes registered, before clients are
+ * attached
+ */
+ int (*enable_driver)(struct ib_device *dev);
+ /*
+ * This is called as part of ib_dealloc_device().
+ */
+ void (*dealloc_driver)(struct ib_device *dev);
+
+ /* iWarp CM callbacks */
+ void (*iw_add_ref)(struct ib_qp *qp);
+ void (*iw_rem_ref)(struct ib_qp *qp);
+ struct ib_qp *(*iw_get_qp)(struct ib_device *device, int qpn);
+ int (*iw_connect)(struct iw_cm_id *cm_id,
+ struct iw_cm_conn_param *conn_param);
+ int (*iw_accept)(struct iw_cm_id *cm_id,
+ struct iw_cm_conn_param *conn_param);
+ int (*iw_reject)(struct iw_cm_id *cm_id, const void *pdata,
+ u8 pdata_len);
+ int (*iw_create_listen)(struct iw_cm_id *cm_id, int backlog);
+ int (*iw_destroy_listen)(struct iw_cm_id *cm_id);
+ /**
+ * counter_bind_qp - Bind a QP to a counter.
+ * @counter - The counter to be bound. If counter->id is zero then
+ * the driver needs to allocate a new counter and set counter->id
+ */
+ int (*counter_bind_qp)(struct rdma_counter *counter, struct ib_qp *qp);
+ /**
+ * counter_unbind_qp - Unbind the qp from the dynamically-allocated
+ * counter and bind it onto the default one
+ */
+ int (*counter_unbind_qp)(struct ib_qp *qp);
+ /**
+ * counter_dealloc -De-allocate the hw counter
+ */
+ int (*counter_dealloc)(struct rdma_counter *counter);
+ /**
+ * counter_alloc_stats - Allocate a struct rdma_hw_stats and fill in
+ * the driver initialized data.
+ */
+ struct rdma_hw_stats *(*counter_alloc_stats)(
+ struct rdma_counter *counter);
+ /**
+ * counter_update_stats - Query the stats value of this counter
+ */
+ int (*counter_update_stats)(struct rdma_counter *counter);
+
+ /**
+ * Allows rdma drivers to add their own restrack attributes
+ * dumped via 'rdma stat' iproute2 command.
+ */
+ int (*fill_stat_mr_entry)(struct sk_buff *msg, struct ib_mr *ibmr);
+
+ /* query driver for its ucontext properties */
+ int (*query_ucontext)(struct ib_ucontext *context,
+ struct uverbs_attr_bundle *attrs);
+
+ DECLARE_RDMA_OBJ_SIZE(ib_ah);
+ DECLARE_RDMA_OBJ_SIZE(ib_counters);
+ DECLARE_RDMA_OBJ_SIZE(ib_cq);
+ DECLARE_RDMA_OBJ_SIZE(ib_mw);
+ DECLARE_RDMA_OBJ_SIZE(ib_pd);
+ DECLARE_RDMA_OBJ_SIZE(ib_rwq_ind_table);
+ DECLARE_RDMA_OBJ_SIZE(ib_srq);
+ DECLARE_RDMA_OBJ_SIZE(ib_ucontext);
+ DECLARE_RDMA_OBJ_SIZE(ib_xrcd);
+};
+
+struct ib_core_device {
+ /* device must be the first element in structure until,
+ * union of ib_core_device and device exists in ib_device.
+ */
+ struct device dev;
+ possible_net_t rdma_net;
+ struct kobject *ports_kobj;
+ struct list_head port_list;
+ struct ib_device *owner; /* reach back to owner ib_device */
+};
+
+struct rdma_restrack_root;
+struct ib_device {
+ /* Do not access @dma_device directly from ULP nor from HW drivers. */
+ struct device *dma_device;
+ struct ib_device_ops ops;
+ char name[IB_DEVICE_NAME_MAX];
+ struct rcu_head rcu_head;
+
+ struct list_head event_handler_list;
+ /* Protects event_handler_list */
+ struct rw_semaphore event_handler_rwsem;
+
+ /* Protects QP's event_handler calls and open_qp list */
+ spinlock_t qp_open_list_lock;
+
+ struct rw_semaphore client_data_rwsem;
+ struct xarray client_data;
+ struct mutex unregistration_lock;
+
+ /* Synchronize GID, Pkey cache entries, subnet prefix, LMC */
+ rwlock_t cache_lock;
+ /**
+ * port_data is indexed by port number
+ */
+ struct ib_port_data *port_data;
+
+ int num_comp_vectors;
+
+ union {
+ struct device dev;
+ struct ib_core_device coredev;
+ };
+
+ /* First group for device attributes,
+ * Second group for driver provided attributes (optional).
+ * It is NULL terminated array.
+ */
+ const struct attribute_group *groups[3];
+
+ 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;
+ /* Indicates kernel verbs support, should not be used in drivers */
+ u16 kverbs_provider:1;
+ /* CQ adaptive moderation (RDMA DIM) */
+ u16 use_cq_dim: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;
+
+ spinlock_t cq_pools_lock;
+ struct list_head cq_pools[IB_POLL_LAST_POOL_TYPE + 1];
+
+ struct rdma_restrack_root *res;
+
+ const struct uapi_definition *driver_def;
+
+ /*
+ * Positive refcount indicates that the device is currently
+ * registered and cannot be unregistered.
+ */
+ refcount_t refcount;
+ struct completion unreg_completion;
+ struct work_struct unregistration_work;
+
+ const struct rdma_link_ops *link_ops;
+
+ /* Protects compat_devs xarray modifications */
+ struct mutex compat_devs_mutex;
+ /* Maintains compat devices for each net namespace */
+ struct xarray compat_devs;
+
+ /* Used by iWarp CM */
+ char iw_ifname[IFNAMSIZ];
+ u32 iw_driver_flags;
+ u32 lag_flags;
+};
+
+struct ib_client_nl_info;
+struct ib_client {
+ const char *name;
+ int (*add)(struct ib_device *ibdev);
+ void (*remove)(struct ib_device *, void *client_data);
+ void (*rename)(struct ib_device *dev, void *client_data);
+ int (*get_nl_info)(struct ib_device *ibdev, void *client_data,
+ struct ib_client_nl_info *res);
+ int (*get_global_nl_info)(struct ib_client_nl_info *res);
+
+ /* 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);
+
+ refcount_t uses;
+ struct completion uses_zero;
+ u32 client_id;
+
+ /* kverbs are not required by the client */
+ u8 no_kverbs_req:1;
+};
+
+/*
+ * IB block DMA iterator
+ *
+ * Iterates the DMA-mapped SGL in contiguous memory blocks aligned
+ * to a HW supported page size.
+ */
+struct ib_block_iter {
+ /* internal states */
+ struct scatterlist *__sg; /* sg holding the current aligned block */
+ dma_addr_t __dma_addr; /* unaligned DMA address of this block */
+ unsigned int __sg_nents; /* number of SG entries */
+ unsigned int __sg_advance; /* number of bytes to advance in sg in next step */
+ unsigned int __pg_bit; /* alignment of current block */
+};
+
+struct ib_device *_ib_alloc_device(size_t size);
+#define ib_alloc_device(drv_struct, member) \
+ container_of(_ib_alloc_device(sizeof(struct drv_struct) + \
+ BUILD_BUG_ON_ZERO(offsetof( \
+ struct drv_struct, member))), \
+ struct drv_struct, member)
+
+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, const char *name,
+ struct device *dma_device);
+void ib_unregister_device(struct ib_device *device);
+void ib_unregister_driver(enum rdma_driver_id driver_id);
+void ib_unregister_device_and_put(struct ib_device *device);
+void ib_unregister_device_queued(struct ib_device *ib_dev);
+
+int ib_register_client (struct ib_client *client);
+void ib_unregister_client(struct ib_client *client);
+
+void __rdma_block_iter_start(struct ib_block_iter *biter,
+ struct scatterlist *sglist,
+ unsigned int nents,
+ unsigned long pgsz);
+bool __rdma_block_iter_next(struct ib_block_iter *biter);
+
+/**
+ * rdma_block_iter_dma_address - get the aligned dma address of the current
+ * block held by the block iterator.
+ * @biter: block iterator holding the memory block
+ */
+static inline dma_addr_t
+rdma_block_iter_dma_address(struct ib_block_iter *biter)
+{
+ return biter->__dma_addr & ~(BIT_ULL(biter->__pg_bit) - 1);
+}
+
+/**
+ * rdma_for_each_block - iterate over contiguous memory blocks of the sg list
+ * @sglist: sglist to iterate over
+ * @biter: block iterator holding the memory block
+ * @nents: maximum number of sg entries to iterate over
+ * @pgsz: best HW supported page size to use
+ *
+ * Callers may use rdma_block_iter_dma_address() to get each
+ * blocks aligned DMA address.
+ */
+#define rdma_for_each_block(sglist, biter, nents, pgsz) \
+ for (__rdma_block_iter_start(biter, sglist, nents, \
+ pgsz); \
+ __rdma_block_iter_next(biter);)
+
+/**
+ * ib_get_client_data - Get IB client context
+ * @device:Device to get context for
+ * @client:Client to get context for
+ *
+ * ib_get_client_data() returns the client context data set with
+ * ib_set_client_data(). This can only be called while the client is
+ * registered to the device, once the ib_client remove() callback returns this
+ * cannot be called.
+ */
+static inline void *ib_get_client_data(struct ib_device *device,
+ struct ib_client *client)
+{
+ return xa_load(&device->client_data, client->client_id);
+}
+void ib_set_client_data(struct ib_device *device, struct ib_client *client,
+ void *data);
+void ib_set_device_ops(struct ib_device *device,
+ const struct ib_device_ops *ops);
+
+int rdma_user_mmap_io(struct ib_ucontext *ucontext, struct vm_area_struct *vma,
+ unsigned long pfn, unsigned long size, pgprot_t prot,
+ struct rdma_user_mmap_entry *entry);
+int rdma_user_mmap_entry_insert(struct ib_ucontext *ucontext,
+ struct rdma_user_mmap_entry *entry,
+ size_t length);
+int rdma_user_mmap_entry_insert_range(struct ib_ucontext *ucontext,
+ struct rdma_user_mmap_entry *entry,
+ size_t length, u32 min_pgoff,
+ u32 max_pgoff);
+
+struct rdma_user_mmap_entry *
+rdma_user_mmap_entry_get_pgoff(struct ib_ucontext *ucontext,
+ unsigned long pgoff);
+struct rdma_user_mmap_entry *
+rdma_user_mmap_entry_get(struct ib_ucontext *ucontext,
+ struct vm_area_struct *vma);
+void rdma_user_mmap_entry_put(struct rdma_user_mmap_entry *entry);
+
+void rdma_user_mmap_entry_remove(struct rdma_user_mmap_entry *entry);
+
+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_buffer_cleared(const void __user *p,
+ size_t len)
+{
+ 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;
+}
+
+static inline bool ib_is_udata_cleared(struct ib_udata *udata,
+ size_t offset,
+ size_t len)
+{
+ return ib_is_buffer_cleared(udata->inbuf + offset, len);
+}
+
+/**
+ * ib_is_destroy_retryable - Check whether the uobject destruction
+ * is retryable.
+ * @ret: The initial destruction return code
+ * @why: remove reason
+ * @uobj: The uobject that is destroyed
+ *
+ * This function is a helper function that IB layer and low-level drivers
+ * can use to consider whether the destruction of the given uobject is
+ * retry-able.
+ * It checks the original return code, if it wasn't success the destruction
+ * is retryable according to the ucontext state (i.e. cleanup_retryable) and
+ * the remove reason. (i.e. why).
+ * Must be called with the object locked for destroy.
+ */
+static inline bool ib_is_destroy_retryable(int ret, enum rdma_remove_reason why,
+ struct ib_uobject *uobj)
+{
+ return ret && (why == RDMA_REMOVE_DESTROY ||
+ uobj->context->cleanup_retryable);
+}
+
+/**
+ * ib_destroy_usecnt - Called during destruction to check the usecnt
+ * @usecnt: The usecnt atomic
+ * @why: remove reason
+ * @uobj: The uobject that is destroyed
+ *
+ * Non-zero usecnts will block destruction unless destruction was triggered by
+ * a ucontext cleanup.
+ */
+static inline int ib_destroy_usecnt(atomic_t *usecnt,
+ enum rdma_remove_reason why,
+ struct ib_uobject *uobj)
+{
+ if (atomic_read(usecnt) && ib_is_destroy_retryable(-EBUSY, why, uobj))
+ return -EBUSY;
+ return 0;
+}
+
+/**
+ * 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
+ *
+ * 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.
+ */
+bool 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);
+
+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(const 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_for_each_port - Iterate over all valid port numbers of the IB device
+ * @device - The struct ib_device * to iterate over
+ * @iter - The unsigned int to store the port number
+ */
+#define rdma_for_each_port(device, iter) \
+ for (iter = rdma_start_port(device + BUILD_BUG_ON_ZERO(!__same_type( \
+ unsigned int, iter))); \
+ iter <= rdma_end_port(device); (iter)++)
+
+/**
+ * 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_is_grh_required(const struct ib_device *device,
+ u8 port_num)
+{
+ return device->port_data[port_num].immutable.core_cap_flags &
+ RDMA_CORE_PORT_IB_GRH_REQUIRED;
+}
+
+static inline bool rdma_protocol_ib(const struct ib_device *device, u8 port_num)
+{
+ return device->port_data[port_num].immutable.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_data[port_num].immutable.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_data[port_num].immutable.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_data[port_num].immutable.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_data[port_num].immutable.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_data[port_num].immutable.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_data[port_num].immutable.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_data[port_num].immutable.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_data[port_num].immutable.core_cap_flags &
+ 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_data[port_num].immutable.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_data[port_num].immutable.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_data[port_num].immutable.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_data[port_num].immutable.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_data[port_num].immutable.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_data[port_num].immutable.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_data[port_num].immutable.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_data[port_num].immutable.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->ops.add_gid && device->ops.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);
+}
+
+/**
+ * rdma_core_cap_opa_port - Return whether the RDMA Port is OPA or not.
+ * @device: Device
+ * @port_num: 1 based Port number
+ *
+ * Return true if port is an Intel OPA port , false if not
+ */
+static inline bool rdma_core_cap_opa_port(struct ib_device *device,
+ u32 port_num)
+{
+ return (device->port_data[port_num].immutable.core_cap_flags &
+ RDMA_CORE_PORT_INTEL_OPA) == RDMA_CORE_PORT_INTEL_OPA;
+}
+
+/**
+ * rdma_mtu_enum_to_int - Return the mtu of the port as an integer value.
+ * @device: Device
+ * @port_num: Port number
+ * @mtu: enum value of MTU
+ *
+ * Return the MTU size supported by the port as an integer value. Will return
+ * -1 if enum value of mtu is not supported.
+ */
+static inline int rdma_mtu_enum_to_int(struct ib_device *device, u8 port,
+ int mtu)
+{
+ if (rdma_core_cap_opa_port(device, port))
+ return opa_mtu_enum_to_int((enum opa_mtu)mtu);
+ else
+ return ib_mtu_enum_to_int((enum ib_mtu)mtu);
+}
+
+/**
+ * rdma_mtu_from_attr - Return the mtu of the port from the port attribute.
+ * @device: Device
+ * @port_num: Port number
+ * @attr: port attribute
+ *
+ * Return the MTU size supported by the port as an integer value.
+ */
+static inline int rdma_mtu_from_attr(struct ib_device *device, u8 port,
+ struct ib_port_attr *attr)
+{
+ if (rdma_core_cap_opa_port(device, port))
+ return attr->phys_mtu;
+ else
+ return ib_mtu_enum_to_int(attr->max_mtu);
+}
+
+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_get_vf_guid(struct ib_device *device, int vf, u8 port,
+ struct ifla_vf_guid *node_guid,
+ struct ifla_vf_guid *port_guid);
+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,
+ 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), KBUILD_MODNAME)
+
+int ib_dealloc_pd_user(struct ib_pd *pd, struct ib_udata *udata);
+
+/**
+ * ib_dealloc_pd - Deallocate kernel PD
+ * @pd: The protection domain
+ *
+ * NOTE: for user PD use ib_dealloc_pd_user with valid udata!
+ */
+static inline void ib_dealloc_pd(struct ib_pd *pd)
+{
+ int ret = ib_dealloc_pd_user(pd, NULL);
+
+ WARN_ONCE(ret, "Destroy of kernel PD shouldn't fail");
+}
+
+enum rdma_create_ah_flags {
+ /* In a sleepable context */
+ RDMA_CREATE_AH_SLEEPABLE = BIT(0),
+};
+
+/**
+ * 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.
+ * @flags: Create address handle flags (see enum rdma_create_ah_flags).
+ *
+ * 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,
+ u32 flags);
+
+/**
+ * rdma_create_user_ah - Creates an address handle for the given address vector.
+ * It resolves destination mac address for ah attribute of RoCE type.
+ * @pd: The protection domain associated with the address handle.
+ * @ah_attr: The attributes of the address vector.
+ * @udata: pointer to user's input output buffer information need by
+ * provider driver.
+ *
+ * It returns 0 on success and returns appropriate error code on error.
+ * The address handle is used to reference a local or global destination
+ * in all UD QP post sends.
+ */
+struct ib_ah *rdma_create_user_ah(struct ib_pd *pd,
+ struct rdma_ah_attr *ah_attr,
+ struct ib_udata *udata);
+/**
+ * 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_attr_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.
+ * When ib_init_ah_attr_from_wc() returns success,
+ * (a) for IB link layer it optionally contains a reference to SGID attribute
+ * when GRH is present for IB link layer.
+ * (b) for RoCE link layer it contains a reference to SGID attribute.
+ * User must invoke rdma_cleanup_ah_attr_gid_attr() to release reference to SGID
+ * attributes which are initialized using ib_init_ah_attr_from_wc().
+ *
+ */
+int ib_init_ah_attr_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);
+
+enum rdma_destroy_ah_flags {
+ /* In a sleepable context */
+ RDMA_DESTROY_AH_SLEEPABLE = BIT(0),
+};
+
+/**
+ * rdma_destroy_ah_user - Destroys an address handle.
+ * @ah: The address handle to destroy.
+ * @flags: Destroy address handle flags (see enum rdma_destroy_ah_flags).
+ * @udata: Valid user data or NULL for kernel objects
+ */
+int rdma_destroy_ah_user(struct ib_ah *ah, u32 flags, struct ib_udata *udata);
+
+/**
+ * rdma_destroy_ah - Destroys an kernel address handle.
+ * @ah: The address handle to destroy.
+ * @flags: Destroy address handle flags (see enum rdma_destroy_ah_flags).
+ *
+ * NOTE: for user ah use rdma_destroy_ah_user with valid udata!
+ */
+static inline void rdma_destroy_ah(struct ib_ah *ah, u32 flags)
+{
+ int ret = rdma_destroy_ah_user(ah, flags, NULL);
+
+ WARN_ONCE(ret, "Destroy of kernel AH shouldn't fail");
+}
+
+struct ib_srq *ib_create_srq_user(struct ib_pd *pd,
+ struct ib_srq_init_attr *srq_init_attr,
+ struct ib_usrq_object *uobject,
+ struct ib_udata *udata);
+static inline struct ib_srq *
+ib_create_srq(struct ib_pd *pd, struct ib_srq_init_attr *srq_init_attr)
+{
+ if (!pd->device->ops.create_srq)
+ return ERR_PTR(-EOPNOTSUPP);
+
+ return ib_create_srq_user(pd, srq_init_attr, NULL, NULL);
+}
+
+/**
+ * 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_user - Destroys the specified SRQ.
+ * @srq: The SRQ to destroy.
+ * @udata: Valid user data or NULL for kernel objects
+ */
+int ib_destroy_srq_user(struct ib_srq *srq, struct ib_udata *udata);
+
+/**
+ * ib_destroy_srq - Destroys the specified kernel SRQ.
+ * @srq: The SRQ to destroy.
+ *
+ * NOTE: for user srq use ib_destroy_srq_user with valid udata!
+ */
+static inline void ib_destroy_srq(struct ib_srq *srq)
+{
+ int ret = ib_destroy_srq_user(srq, NULL);
+
+ WARN_ONCE(ret, "Destroy of kernel SRQ shouldn't fail");
+}
+
+/**
+ * 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,
+ const struct ib_recv_wr *recv_wr,
+ const struct ib_recv_wr **bad_recv_wr)
+{
+ const struct ib_recv_wr *dummy;
+
+ return srq->device->ops.post_srq_recv(srq, recv_wr,
+ bad_recv_wr ? : &dummy);
+}
+
+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.
+ * @udata: Valid udata or NULL for kernel objects
+ */
+int ib_destroy_qp_user(struct ib_qp *qp, struct ib_udata *udata);
+
+/**
+ * ib_destroy_qp - Destroys the specified kernel QP.
+ * @qp: The QP to destroy.
+ *
+ * NOTE: for user qp use ib_destroy_qp_user with valid udata!
+ */
+static inline int ib_destroy_qp(struct ib_qp *qp)
+{
+ return ib_destroy_qp_user(qp, NULL);
+}
+
+/**
+ * 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,
+ const struct ib_send_wr *send_wr,
+ const struct ib_send_wr **bad_send_wr)
+{
+ const struct ib_send_wr *dummy;
+
+ return qp->device->ops.post_send(qp, send_wr, bad_send_wr ? : &dummy);
+}
+
+/**
+ * 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,
+ const struct ib_recv_wr *recv_wr,
+ const struct ib_recv_wr **bad_recv_wr)
+{
+ const struct ib_recv_wr *dummy;
+
+ return qp->device->ops.post_recv(qp, recv_wr, bad_recv_wr ? : &dummy);
+}
+
+struct ib_cq *__ib_alloc_cq(struct ib_device *dev, void *private, int nr_cqe,
+ int comp_vector, enum ib_poll_context poll_ctx,
+ const char *caller);
+static inline struct ib_cq *ib_alloc_cq(struct ib_device *dev, void *private,
+ int nr_cqe, int comp_vector,
+ enum ib_poll_context poll_ctx)
+{
+ return __ib_alloc_cq(dev, private, nr_cqe, comp_vector, poll_ctx,
+ KBUILD_MODNAME);
+}
+
+struct ib_cq *__ib_alloc_cq_any(struct ib_device *dev, void *private,
+ int nr_cqe, enum ib_poll_context poll_ctx,
+ const char *caller);
+
+/**
+ * ib_alloc_cq_any: Allocate kernel CQ
+ * @dev: The IB device
+ * @private: Private data attached to the CQE
+ * @nr_cqe: Number of CQEs in the CQ
+ * @poll_ctx: Context used for polling the CQ
+ */
+static inline struct ib_cq *ib_alloc_cq_any(struct ib_device *dev,
+ void *private, int nr_cqe,
+ enum ib_poll_context poll_ctx)
+{
+ return __ib_alloc_cq_any(dev, private, nr_cqe, poll_ctx,
+ KBUILD_MODNAME);
+}
+
+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,
+ const char *caller);
+#define ib_create_cq(device, cmp_hndlr, evt_hndlr, cq_ctxt, cq_attr) \
+ __ib_create_cq((device), (cmp_hndlr), (evt_hndlr), (cq_ctxt), (cq_attr), KBUILD_MODNAME)
+
+/**
+ * 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);
+
+/**
+ * rdma_set_cq_moderation - 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 rdma_set_cq_moderation(struct ib_cq *cq, u16 cq_count, u16 cq_period);
+
+/**
+ * ib_destroy_cq_user - Destroys the specified CQ.
+ * @cq: The CQ to destroy.
+ * @udata: Valid user data or NULL for kernel objects
+ */
+int ib_destroy_cq_user(struct ib_cq *cq, struct ib_udata *udata);
+
+/**
+ * ib_destroy_cq - Destroys the specified kernel CQ.
+ * @cq: The CQ to destroy.
+ *
+ * NOTE: for user cq use ib_destroy_cq_user with valid udata!
+ */
+static inline void ib_destroy_cq(struct ib_cq *cq)
+{
+ int ret = ib_destroy_cq_user(cq, NULL);
+
+ WARN_ONCE(ret, "Destroy of kernel CQ shouldn't fail");
+}
+
+/**
+ * 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->ops.poll_cq(cq, num_entries, wc);
+}
+
+/**
+ * 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->ops.req_notify_cq(cq, flags);
+}
+
+struct ib_cq *ib_cq_pool_get(struct ib_device *dev, unsigned int nr_cqe,
+ int comp_vector_hint,
+ enum ib_poll_context poll_ctx);
+
+void ib_cq_pool_put(struct ib_cq *cq, unsigned int nr_cqe);
+
+/**
+ * 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->ops.req_ncomp_notif ?
+ cq->device->ops.req_ncomp_notif(cq, wc_cnt) :
+ -ENOSYS;
+}
+
+/*
+ * Drivers that don't need a DMA mapping at the RDMA layer, set dma_device to
+ * NULL. This causes the ib_dma* helpers to just stash the kernel virtual
+ * address into the dma address.
+ */
+static inline bool ib_uses_virt_dma(struct ib_device *dev)
+{
+ return IS_ENABLED(CONFIG_INFINIBAND_VIRT_DMA) && !dev->dma_device;
+}
+
+/**
+ * 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)
+{
+ if (ib_uses_virt_dma(dev))
+ return 0;
+ 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)
+{
+ if (ib_uses_virt_dma(dev))
+ return (uintptr_t)cpu_addr;
+ 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)
+{
+ if (!ib_uses_virt_dma(dev))
+ 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)
+{
+ if (ib_uses_virt_dma(dev))
+ return (uintptr_t)(page_address(page) + offset);
+ 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)
+{
+ if (!ib_uses_virt_dma(dev))
+ dma_unmap_page(dev->dma_device, addr, size, direction);
+}
+
+int ib_dma_virt_map_sg(struct ib_device *dev, struct scatterlist *sg, int nents);
+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)
+{
+ if (ib_uses_virt_dma(dev))
+ return ib_dma_virt_map_sg(dev, sg, nents);
+ 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)
+{
+ if (!ib_uses_virt_dma(dev))
+ dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction,
+ dma_attrs);
+}
+
+/**
+ * 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 ib_dma_map_sg_attrs(dev, sg, nents, direction, 0);
+}
+
+/**
+ * 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)
+{
+ ib_dma_unmap_sg_attrs(dev, sg, nents, direction, 0);
+}
+
+/**
+ * ib_dma_max_seg_size - Return the size limit of a single DMA transfer
+ * @dev: The device to query
+ *
+ * The returned value represents a size in bytes.
+ */
+static inline unsigned int ib_dma_max_seg_size(struct ib_device *dev)
+{
+ if (ib_uses_virt_dma(dev))
+ return UINT_MAX;
+ return dma_get_max_seg_size(dev->dma_device);
+}
+
+/**
+ * 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)
+{
+ if (!ib_uses_virt_dma(dev))
+ 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)
+{
+ if (!ib_uses_virt_dma(dev))
+ 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_reg_user_mr - register a memory region for virtual addresses from kernel
+ * space. This function should be called when 'current' is the owning MM.
+ */
+struct ib_mr *ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
+ u64 virt_addr, int mr_access_flags);
+
+/* ib_advise_mr - give an advice about an address range in a memory region */
+int ib_advise_mr(struct ib_pd *pd, enum ib_uverbs_advise_mr_advice advice,
+ u32 flags, struct ib_sge *sg_list, u32 num_sge);
+/**
+ * ib_dereg_mr_user - Deregisters a memory region and removes it from the
+ * HCA translation table.
+ * @mr: The memory region to deregister.
+ * @udata: Valid user data or NULL for kernel object
+ *
+ * This function can fail, if the memory region has memory windows bound to it.
+ */
+int ib_dereg_mr_user(struct ib_mr *mr, struct ib_udata *udata);
+
+/**
+ * ib_dereg_mr - Deregisters a kernel 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.
+ *
+ * NOTE: for user mr use ib_dereg_mr_user with valid udata!
+ */
+static inline int ib_dereg_mr(struct ib_mr *mr)
+{
+ return ib_dereg_mr_user(mr, NULL);
+}
+
+struct ib_mr *ib_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
+ u32 max_num_sg);
+
+struct ib_mr *ib_alloc_mr_integrity(struct ib_pd *pd,
+ u32 max_num_data_sg,
+ u32 max_num_meta_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)
+{
+ const u32 mask = 0x000000ff;
+ return ((rkey + 1) & mask) | (rkey & ~mask);
+}
+
+/**
+ * ib_attach_mcast - Attaches the specified QP to a multicast group.
+ * @qp: QP to attach to the multicast group. The QP must be type
+ * IB_QPT_UD.
+ * @gid: Multicast group GID.
+ * @lid: Multicast group LID in host byte order.
+ *
+ * In order to send and receive multicast packets, subnet
+ * administration must have created the multicast group and configured
+ * the fabric appropriately. The port associated with the specified
+ * QP must also be a member of the multicast group.
+ */
+int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
+
+/**
+ * ib_detach_mcast - Detaches the specified QP from a multicast group.
+ * @qp: QP to detach from the multicast group.
+ * @gid: Multicast group GID.
+ * @lid: Multicast group LID in host byte order.
+ */
+int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
+
+struct ib_xrcd *ib_alloc_xrcd_user(struct ib_device *device,
+ struct inode *inode, struct ib_udata *udata);
+int ib_dealloc_xrcd_user(struct ib_xrcd *xrcd, struct ib_udata *udata);
+
+static inline int ib_check_mr_access(int flags)
+{
+ /*
+ * Local write permission is required if remote write or
+ * remote atomic permission is also requested.
+ */
+ if (flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) &&
+ !(flags & IB_ACCESS_LOCAL_WRITE))
+ return -EINVAL;
+
+ if (flags & ~IB_ACCESS_SUPPORTED)
+ return -EINVAL;
+
+ return 0;
+}
+
+static inline bool ib_access_writable(int access_flags)
+{
+ /*
+ * We have writable memory backing the MR if any of the following
+ * access flags are set. "Local write" and "remote write" obviously
+ * require write access. "Remote atomic" can do things like fetch and
+ * add, which will modify memory, and "MW bind" can change permissions
+ * by binding a window.
+ */
+ return access_flags &
+ (IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_WRITE |
+ IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_MW_BIND);
+}
+
+/**
+ * ib_check_mr_status: lightweight check of MR status.
+ * This routine may provide status checks on a selected
+ * ib_mr. first use is for signature status check.
+ *
+ * @mr: A memory region.
+ * @check_mask: Bitmask of which checks to perform from
+ * ib_mr_status_check enumeration.
+ * @mr_status: The container of relevant status checks.
+ * failed checks will be indicated in the status bitmask
+ * and the relevant info shall be in the error item.
+ */
+int ib_check_mr_status(struct ib_mr *mr, u32 check_mask,
+ struct ib_mr_status *mr_status);
+
+/**
+ * ib_device_try_get: Hold a registration lock
+ * device: The device to lock
+ *
+ * A device under an active registration lock cannot become unregistered. It
+ * is only possible to obtain a registration lock on a device that is fully
+ * registered, otherwise this function returns false.
+ *
+ * The registration lock is only necessary for actions which require the
+ * device to still be registered. Uses that only require the device pointer to
+ * be valid should use get_device(&ibdev->dev) to hold the memory.
+ *
+ */
+static inline bool ib_device_try_get(struct ib_device *dev)
+{
+ return refcount_inc_not_zero(&dev->refcount);
+}
+
+void ib_device_put(struct ib_device *device);
+struct ib_device *ib_device_get_by_netdev(struct net_device *ndev,
+ enum rdma_driver_id driver_id);
+struct ib_device *ib_device_get_by_name(const char *name,
+ enum rdma_driver_id driver_id);
+struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, u8 port,
+ u16 pkey, const union ib_gid *gid,
+ const struct sockaddr *addr);
+int ib_device_set_netdev(struct ib_device *ib_dev, struct net_device *ndev,
+ unsigned int port);
+struct net_device *ib_device_netdev(struct ib_device *dev, u8 port);
+
+struct ib_wq *ib_create_wq(struct ib_pd *pd,
+ struct ib_wq_init_attr *init_attr);
+int ib_destroy_wq_user(struct ib_wq *wq, struct ib_udata *udata);
+int ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *attr,
+ u32 wq_attr_mask);
+
+int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
+ unsigned int *sg_offset, unsigned int page_size);
+int ib_map_mr_sg_pi(struct ib_mr *mr, struct scatterlist *data_sg,
+ int data_sg_nents, unsigned int *data_sg_offset,
+ struct scatterlist *meta_sg, int meta_sg_nents,
+ unsigned int *meta_sg_offset, unsigned int page_size);
+
+static inline int
+ib_map_mr_sg_zbva(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
+ unsigned int *sg_offset, unsigned int page_size)
+{
+ int n;
+
+ n = ib_map_mr_sg(mr, sg, sg_nents, sg_offset, page_size);
+ mr->iova = 0;
+
+ return n;
+}
+
+int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents,
+ unsigned int *sg_offset, int (*set_page)(struct ib_mr *, u64));
+
+void ib_drain_rq(struct ib_qp *qp);
+void ib_drain_sq(struct ib_qp *qp);
+void ib_drain_qp(struct ib_qp *qp);
+
+int ib_get_eth_speed(struct ib_device *dev, u8 port_num, u16 *speed, u8 *width);
+
+static inline u8 *rdma_ah_retrieve_dmac(struct rdma_ah_attr *attr)
+{
+ if (attr->type == RDMA_AH_ATTR_TYPE_ROCE)
+ return attr->roce.dmac;
+ return NULL;
+}
+
+static inline void rdma_ah_set_dlid(struct rdma_ah_attr *attr, u32 dlid)
+{
+ if (attr->type == RDMA_AH_ATTR_TYPE_IB)
+ attr->ib.dlid = (u16)dlid;
+ else if (attr->type == RDMA_AH_ATTR_TYPE_OPA)
+ attr->opa.dlid = dlid;
+}
+
+static inline u32 rdma_ah_get_dlid(const struct rdma_ah_attr *attr)
+{
+ if (attr->type == RDMA_AH_ATTR_TYPE_IB)
+ return attr->ib.dlid;
+ else if (attr->type == RDMA_AH_ATTR_TYPE_OPA)
+ return attr->opa.dlid;
+ return 0;
+}
+
+static inline void rdma_ah_set_sl(struct rdma_ah_attr *attr, u8 sl)
+{
+ attr->sl = sl;
+}
+
+static inline u8 rdma_ah_get_sl(const struct rdma_ah_attr *attr)
+{
+ return attr->sl;
+}
+
+static inline void rdma_ah_set_path_bits(struct rdma_ah_attr *attr,
+ u8 src_path_bits)
+{
+ if (attr->type == RDMA_AH_ATTR_TYPE_IB)
+ attr->ib.src_path_bits = src_path_bits;
+ else if (attr->type == RDMA_AH_ATTR_TYPE_OPA)
+ attr->opa.src_path_bits = src_path_bits;
+}
+
+static inline u8 rdma_ah_get_path_bits(const struct rdma_ah_attr *attr)
+{
+ if (attr->type == RDMA_AH_ATTR_TYPE_IB)
+ return attr->ib.src_path_bits;
+ else if (attr->type == RDMA_AH_ATTR_TYPE_OPA)
+ return attr->opa.src_path_bits;
+ return 0;
+}
+
+static inline void rdma_ah_set_make_grd(struct rdma_ah_attr *attr,
+ bool make_grd)
+{
+ if (attr->type == RDMA_AH_ATTR_TYPE_OPA)
+ attr->opa.make_grd = make_grd;
+}
+
+static inline bool rdma_ah_get_make_grd(const struct rdma_ah_attr *attr)
+{
+ if (attr->type == RDMA_AH_ATTR_TYPE_OPA)
+ return attr->opa.make_grd;
+ return false;
+}
+
+static inline void rdma_ah_set_port_num(struct rdma_ah_attr *attr, u8 port_num)
+{
+ attr->port_num = port_num;
+}
+
+static inline u8 rdma_ah_get_port_num(const struct rdma_ah_attr *attr)
+{
+ return attr->port_num;
+}
+
+static inline void rdma_ah_set_static_rate(struct rdma_ah_attr *attr,
+ u8 static_rate)
+{
+ attr->static_rate = static_rate;
+}
+
+static inline u8 rdma_ah_get_static_rate(const struct rdma_ah_attr *attr)
+{
+ return attr->static_rate;
+}
+
+static inline void rdma_ah_set_ah_flags(struct rdma_ah_attr *attr,
+ enum ib_ah_flags flag)
+{
+ attr->ah_flags = flag;
+}
+
+static inline enum ib_ah_flags
+ rdma_ah_get_ah_flags(const struct rdma_ah_attr *attr)
+{
+ return attr->ah_flags;
+}
+
+static inline const struct ib_global_route
+ *rdma_ah_read_grh(const struct rdma_ah_attr *attr)
+{
+ return &attr->grh;
+}
+
+/*To retrieve and modify the grh */
+static inline struct ib_global_route
+ *rdma_ah_retrieve_grh(struct rdma_ah_attr *attr)
+{
+ return &attr->grh;
+}
+
+static inline void rdma_ah_set_dgid_raw(struct rdma_ah_attr *attr, void *dgid)
+{
+ struct ib_global_route *grh = rdma_ah_retrieve_grh(attr);
+
+ memcpy(grh->dgid.raw, dgid, sizeof(grh->dgid));
+}
+
+static inline void rdma_ah_set_subnet_prefix(struct rdma_ah_attr *attr,
+ __be64 prefix)
+{
+ struct ib_global_route *grh = rdma_ah_retrieve_grh(attr);
+
+ grh->dgid.global.subnet_prefix = prefix;
+}
+
+static inline void rdma_ah_set_interface_id(struct rdma_ah_attr *attr,
+ __be64 if_id)
+{
+ struct ib_global_route *grh = rdma_ah_retrieve_grh(attr);
+
+ grh->dgid.global.interface_id = if_id;
+}
+
+static inline void rdma_ah_set_grh(struct rdma_ah_attr *attr,
+ union ib_gid *dgid, u32 flow_label,
+ u8 sgid_index, u8 hop_limit,
+ u8 traffic_class)
+{
+ struct ib_global_route *grh = rdma_ah_retrieve_grh(attr);
+
+ attr->ah_flags = IB_AH_GRH;
+ if (dgid)
+ grh->dgid = *dgid;
+ grh->flow_label = flow_label;
+ grh->sgid_index = sgid_index;
+ grh->hop_limit = hop_limit;
+ grh->traffic_class = traffic_class;
+ grh->sgid_attr = NULL;
+}
+
+void rdma_destroy_ah_attr(struct rdma_ah_attr *ah_attr);
+void rdma_move_grh_sgid_attr(struct rdma_ah_attr *attr, union ib_gid *dgid,
+ u32 flow_label, u8 hop_limit, u8 traffic_class,
+ const struct ib_gid_attr *sgid_attr);
+void rdma_copy_ah_attr(struct rdma_ah_attr *dest,
+ const struct rdma_ah_attr *src);
+void rdma_replace_ah_attr(struct rdma_ah_attr *old,
+ const struct rdma_ah_attr *new);
+void rdma_move_ah_attr(struct rdma_ah_attr *dest, struct rdma_ah_attr *src);
+
+/**
+ * rdma_ah_find_type - Return address handle type.
+ *
+ * @dev: Device to be checked
+ * @port_num: Port number
+ */
+static inline enum rdma_ah_attr_type rdma_ah_find_type(struct ib_device *dev,
+ u8 port_num)
+{
+ if (rdma_protocol_roce(dev, port_num))
+ return RDMA_AH_ATTR_TYPE_ROCE;
+ if (rdma_protocol_ib(dev, port_num)) {
+ if (rdma_cap_opa_ah(dev, port_num))
+ return RDMA_AH_ATTR_TYPE_OPA;
+ return RDMA_AH_ATTR_TYPE_IB;
+ }
+
+ return RDMA_AH_ATTR_TYPE_UNDEFINED;
+}
+
+/**
+ * ib_lid_cpu16 - Return lid in 16bit CPU encoding.
+ * In the current implementation the only way to get
+ * get the 32bit lid is from other sources for OPA.
+ * For IB, lids will always be 16bits so cast the
+ * value accordingly.
+ *
+ * @lid: A 32bit LID
+ */
+static inline u16 ib_lid_cpu16(u32 lid)
+{
+ WARN_ON_ONCE(lid & 0xFFFF0000);
+ return (u16)lid;
+}
+
+/**
+ * ib_lid_be16 - Return lid in 16bit BE encoding.
+ *
+ * @lid: A 32bit LID
+ */
+static inline __be16 ib_lid_be16(u32 lid)
+{
+ WARN_ON_ONCE(lid & 0xFFFF0000);
+ return cpu_to_be16((u16)lid);
+}
+
+/**
+ * ib_get_vector_affinity - Get the affinity mappings of a given completion
+ * vector
+ * @device: the rdma device
+ * @comp_vector: index of completion vector
+ *
+ * Returns NULL on failure, otherwise a corresponding cpu map of the
+ * completion vector (returns all-cpus map if the device driver doesn't
+ * implement get_vector_affinity).
+ */
+static inline const struct cpumask *
+ib_get_vector_affinity(struct ib_device *device, int comp_vector)
+{
+ if (comp_vector < 0 || comp_vector >= device->num_comp_vectors ||
+ !device->ops.get_vector_affinity)
+ return NULL;
+
+ return device->ops.get_vector_affinity(device, comp_vector);
+
+}
+
+/**
+ * rdma_roce_rescan_device - Rescan all of the network devices in the system
+ * and add their gids, as needed, to the relevant RoCE devices.
+ *
+ * @device: the rdma device
+ */
+void rdma_roce_rescan_device(struct ib_device *ibdev);
+
+struct ib_ucontext *ib_uverbs_get_ucontext_file(struct ib_uverbs_file *ufile);
+
+int uverbs_destroy_def_handler(struct uverbs_attr_bundle *attrs);
+
+struct net_device *rdma_alloc_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 *));
+
+int rdma_init_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 net_device *netdev);
+
+/**
+ * rdma_set_device_sysfs_group - Set device attributes group to have
+ * driver specific sysfs entries at
+ * for infiniband class.
+ *
+ * @device: device pointer for which attributes to be created
+ * @group: Pointer to group which should be added when device
+ * is registered with sysfs.
+ * rdma_set_device_sysfs_group() allows existing drivers to expose one
+ * group per device to have sysfs attributes.
+ *
+ * NOTE: New drivers should not make use of this API; instead new device
+ * parameter should be exposed via netlink command. This API and mechanism
+ * exist only for existing drivers.
+ */
+static inline void
+rdma_set_device_sysfs_group(struct ib_device *dev,
+ const struct attribute_group *group)
+{
+ dev->groups[1] = group;
+}
+
+/**
+ * rdma_device_to_ibdev - Get ib_device pointer from device pointer
+ *
+ * @device: device pointer for which ib_device pointer to retrieve
+ *
+ * rdma_device_to_ibdev() retrieves ib_device pointer from device.
+ *
+ */
+static inline struct ib_device *rdma_device_to_ibdev(struct device *device)
+{
+ struct ib_core_device *coredev =
+ container_of(device, struct ib_core_device, dev);
+
+ return coredev->owner;
+}
+
+/**
+ * ibdev_to_node - return the NUMA node for a given ib_device
+ * @dev: device to get the NUMA node for.
+ */
+static inline int ibdev_to_node(struct ib_device *ibdev)
+{
+ struct device *parent = ibdev->dev.parent;
+
+ if (!parent)
+ return NUMA_NO_NODE;
+ return dev_to_node(parent);
+}
+
+/**
+ * rdma_device_to_drv_device - Helper macro to reach back to driver's
+ * ib_device holder structure from device pointer.
+ *
+ * NOTE: New drivers should not make use of this API; This API is only for
+ * existing drivers who have exposed sysfs entries using
+ * rdma_set_device_sysfs_group().
+ */
+#define rdma_device_to_drv_device(dev, drv_dev_struct, ibdev_member) \
+ container_of(rdma_device_to_ibdev(dev), drv_dev_struct, ibdev_member)
+
+bool rdma_dev_access_netns(const struct ib_device *device,
+ const struct net *net);
+
+#define IB_ROCE_UDP_ENCAP_VALID_PORT_MIN (0xC000)
+#define IB_ROCE_UDP_ENCAP_VALID_PORT_MAX (0xFFFF)
+#define IB_GRH_FLOWLABEL_MASK (0x000FFFFF)
+
+/**
+ * rdma_flow_label_to_udp_sport - generate a RoCE v2 UDP src port value based
+ * on the flow_label
+ *
+ * This function will convert the 20 bit flow_label input to a valid RoCE v2
+ * UDP src port 14 bit value. All RoCE V2 drivers should use this same
+ * convention.
+ */
+static inline u16 rdma_flow_label_to_udp_sport(u32 fl)
+{
+ u32 fl_low = fl & 0x03fff, fl_high = fl & 0xFC000;
+
+ fl_low ^= fl_high >> 14;
+ return (u16)(fl_low | IB_ROCE_UDP_ENCAP_VALID_PORT_MIN);
+}
+
+/**
+ * rdma_calc_flow_label - generate a RDMA symmetric flow label value based on
+ * local and remote qpn values
+ *
+ * This function folded the multiplication results of two qpns, 24 bit each,
+ * fields, and converts it to a 20 bit results.
+ *
+ * This function will create symmetric flow_label value based on the local
+ * and remote qpn values. this will allow both the requester and responder
+ * to calculate the same flow_label for a given connection.
+ *
+ * This helper function should be used by driver in case the upper layer
+ * provide a zero flow_label value. This is to improve entropy of RDMA
+ * traffic in the network.
+ */
+static inline u32 rdma_calc_flow_label(u32 lqpn, u32 rqpn)
+{
+ u64 v = (u64)lqpn * rqpn;
+
+ v ^= v >> 20;
+ v ^= v >> 40;
+
+ return (u32)(v & IB_GRH_FLOWLABEL_MASK);
+}
+#endif /* IB_VERBS_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-09 05:39:14 +0000