#include "opt_rss.h"
#include "opt_ratelimit.h"
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>
#if defined(CONFIG_X86)
#include <asm/pat.h>
#endif
#include <linux/sched.h>
#include <linux/delay.h>
#include <linux/fs.h>
#undef inode
#include <rdma/ib_user_verbs.h>
#include <rdma/ib_addr.h>
#include <rdma/ib_cache.h>
#include <dev/mlx5/port.h>
#include <dev/mlx5/vport.h>
#include <linux/list.h>
#include <rdma/ib_smi.h>
#include <rdma/ib_umem.h>
#include <rdma/uverbs_ioctl.h>
#include <linux/in.h>
#include <linux/etherdevice.h>
#include <dev/mlx5/fs.h>
#include <dev/mlx5/mlx5_ib/mlx5_ib.h>
MODULE_DESCRIPTION("Mellanox Connect-IB HCA IB driver");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DEPEND(mlx5ib, linuxkpi, 1, 1, 1);
MODULE_DEPEND(mlx5ib, mlx5, 1, 1, 1);
MODULE_DEPEND(mlx5ib, ibcore, 1, 1, 1);
MODULE_VERSION(mlx5ib, 1);
enum {
MLX5_ATOMIC_SIZE_QP_8BYTES = 1 << 3,
};
static enum rdma_link_layer
mlx5_port_type_cap_to_rdma_ll(int port_type_cap)
{
switch (port_type_cap) {
case MLX5_CAP_PORT_TYPE_IB:
return IB_LINK_LAYER_INFINIBAND;
case MLX5_CAP_PORT_TYPE_ETH:
return IB_LINK_LAYER_ETHERNET;
default:
return IB_LINK_LAYER_UNSPECIFIED;
}
}
static enum rdma_link_layer
mlx5_ib_port_link_layer(struct ib_device *device, u8 port_num)
{
struct mlx5_ib_dev *dev = to_mdev(device);
int port_type_cap = MLX5_CAP_GEN(dev->mdev, port_type);
return mlx5_port_type_cap_to_rdma_ll(port_type_cap);
}
static bool mlx5_netdev_match(if_t ndev,
struct mlx5_core_dev *mdev,
const char *dname)
{
return if_gettype(ndev) == IFT_ETHER &&
if_getdname(ndev) != NULL &&
strcmp(if_getdname(ndev), dname) == 0 &&
if_getsoftc(ndev) != NULL &&
*(struct mlx5_core_dev **)if_getsoftc(ndev) == mdev;
}
static int mlx5_netdev_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
if_t ndev = netdev_notifier_info_to_ifp(ptr);
struct mlx5_ib_dev *ibdev = container_of(this, struct mlx5_ib_dev,
roce.nb);
switch (event) {
case NETDEV_REGISTER:
case NETDEV_UNREGISTER:
write_lock(&ibdev->roce.netdev_lock);
if (mlx5_netdev_match(ndev, ibdev->mdev, "mce"))
ibdev->roce.netdev = (event == NETDEV_UNREGISTER) ?
NULL : ndev;
write_unlock(&ibdev->roce.netdev_lock);
break;
case NETDEV_UP:
case NETDEV_DOWN: {
if_t upper = NULL;
if ((upper == ndev || (!upper && ndev == ibdev->roce.netdev))
&& ibdev->ib_active) {
struct ib_event ibev = {0};
ibev.device = &ibdev->ib_dev;
ibev.event = (event == NETDEV_UP) ?
IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
ibev.element.port_num = 1;
ib_dispatch_event(&ibev);
}
break;
}
default:
break;
}
return NOTIFY_DONE;
}
static if_t mlx5_ib_get_netdev(struct ib_device *device,
u8 port_num)
{
struct mlx5_ib_dev *ibdev = to_mdev(device);
if_t ndev;
read_lock(&ibdev->roce.netdev_lock);
ndev = ibdev->roce.netdev;
if (ndev)
if_ref(ndev);
read_unlock(&ibdev->roce.netdev_lock);
return ndev;
}
static int translate_eth_proto_oper(u32 eth_proto_oper, u8 *active_speed,
u8 *active_width)
{
switch (eth_proto_oper) {
case MLX5E_PROT_MASK(MLX5E_1000BASE_CX_SGMII):
case MLX5E_PROT_MASK(MLX5E_1000BASE_KX):
case MLX5E_PROT_MASK(MLX5E_100BASE_TX):
case MLX5E_PROT_MASK(MLX5E_1000BASE_T):
*active_width = IB_WIDTH_1X;
*active_speed = IB_SPEED_SDR;
break;
case MLX5E_PROT_MASK(MLX5E_10GBASE_T):
case MLX5E_PROT_MASK(MLX5E_10GBASE_CX4):
case MLX5E_PROT_MASK(MLX5E_10GBASE_KX4):
case MLX5E_PROT_MASK(MLX5E_10GBASE_KR):
case MLX5E_PROT_MASK(MLX5E_10GBASE_CR):
case MLX5E_PROT_MASK(MLX5E_10GBASE_SR):
case MLX5E_PROT_MASK(MLX5E_10GBASE_ER_LR):
*active_width = IB_WIDTH_1X;
*active_speed = IB_SPEED_QDR;
break;
case MLX5E_PROT_MASK(MLX5E_25GBASE_CR):
case MLX5E_PROT_MASK(MLX5E_25GBASE_KR):
case MLX5E_PROT_MASK(MLX5E_25GBASE_SR):
*active_width = IB_WIDTH_1X;
*active_speed = IB_SPEED_EDR;
break;
case MLX5E_PROT_MASK(MLX5E_40GBASE_CR4):
case MLX5E_PROT_MASK(MLX5E_40GBASE_KR4):
case MLX5E_PROT_MASK(MLX5E_40GBASE_SR4):
case MLX5E_PROT_MASK(MLX5E_40GBASE_LR4_ER4):
*active_width = IB_WIDTH_4X;
*active_speed = IB_SPEED_QDR;
break;
case MLX5E_PROT_MASK(MLX5E_50GBASE_CR2):
case MLX5E_PROT_MASK(MLX5E_50GBASE_KR2):
case MLX5E_PROT_MASK(MLX5E_50GBASE_KR4):
case MLX5E_PROT_MASK(MLX5E_50GBASE_SR2):
*active_width = IB_WIDTH_1X;
*active_speed = IB_SPEED_HDR;
break;
case MLX5E_PROT_MASK(MLX5E_56GBASE_R4):
*active_width = IB_WIDTH_4X;
*active_speed = IB_SPEED_FDR;
break;
case MLX5E_PROT_MASK(MLX5E_100GBASE_CR4):
case MLX5E_PROT_MASK(MLX5E_100GBASE_SR4):
case MLX5E_PROT_MASK(MLX5E_100GBASE_KR4):
case MLX5E_PROT_MASK(MLX5E_100GBASE_LR4):
*active_width = IB_WIDTH_4X;
*active_speed = IB_SPEED_EDR;
break;
default:
*active_width = IB_WIDTH_4X;
*active_speed = IB_SPEED_QDR;
return -EINVAL;
}
return 0;
}
static int translate_eth_ext_proto_oper(u32 eth_proto_oper, u8 *active_speed,
u8 *active_width)
{
switch (eth_proto_oper) {
case MLX5E_PROT_MASK(MLX5E_SGMII_100M):
case MLX5E_PROT_MASK(MLX5E_1000BASE_X_SGMII):
*active_width = IB_WIDTH_1X;
*active_speed = IB_SPEED_SDR;
break;
case MLX5E_PROT_MASK(MLX5E_5GBASE_R):
*active_width = IB_WIDTH_1X;
*active_speed = IB_SPEED_DDR;
break;
case MLX5E_PROT_MASK(MLX5E_10GBASE_XFI_XAUI_1):
*active_width = IB_WIDTH_1X;
*active_speed = IB_SPEED_QDR;
break;
case MLX5E_PROT_MASK(MLX5E_40GBASE_XLAUI_4_XLPPI_4):
*active_width = IB_WIDTH_4X;
*active_speed = IB_SPEED_QDR;
break;
case MLX5E_PROT_MASK(MLX5E_25GAUI_1_25GBASE_CR_KR):
*active_width = IB_WIDTH_1X;
*active_speed = IB_SPEED_EDR;
break;
case MLX5E_PROT_MASK(MLX5E_50GAUI_2_LAUI_2_50GBASE_CR2_KR2):
*active_width = IB_WIDTH_2X;
*active_speed = IB_SPEED_EDR;
break;
case MLX5E_PROT_MASK(MLX5E_50GAUI_1_LAUI_1_50GBASE_CR_KR):
*active_width = IB_WIDTH_1X;
*active_speed = IB_SPEED_HDR;
break;
case MLX5E_PROT_MASK(MLX5E_CAUI_4_100GBASE_CR4_KR4):
*active_width = IB_WIDTH_4X;
*active_speed = IB_SPEED_EDR;
break;
case MLX5E_PROT_MASK(MLX5E_100GAUI_2_100GBASE_CR2_KR2):
*active_width = IB_WIDTH_2X;
*active_speed = IB_SPEED_HDR;
break;
case MLX5E_PROT_MASK(MLX5E_100GAUI_1_100GBASE_CR_KR):
*active_width = IB_WIDTH_1X;
*active_speed = IB_SPEED_NDR;
break;
case MLX5E_PROT_MASK(MLX5E_200GAUI_4_200GBASE_CR4_KR4):
*active_width = IB_WIDTH_4X;
*active_speed = IB_SPEED_HDR;
break;
case MLX5E_PROT_MASK(MLX5E_200GAUI_2_200GBASE_CR2_KR2):
*active_width = IB_WIDTH_2X;
*active_speed = IB_SPEED_NDR;
break;
case MLX5E_PROT_MASK(MLX5E_400GAUI_4_400GBASE_CR4_KR4):
*active_width = IB_WIDTH_4X;
*active_speed = IB_SPEED_NDR;
break;
default:
*active_width = IB_WIDTH_4X;
*active_speed = IB_SPEED_QDR;
return -EINVAL;
}
return 0;
}
static int mlx5_query_port_roce(struct ib_device *device, u8 port_num,
struct ib_port_attr *props)
{
struct mlx5_ib_dev *dev = to_mdev(device);
u32 out[MLX5_ST_SZ_DW(ptys_reg)] = {};
if_t ndev;
enum ib_mtu ndev_ib_mtu;
u16 qkey_viol_cntr;
u32 eth_prot_oper;
bool ext;
int err;
memset(props, 0, sizeof(*props));
err = mlx5_query_port_ptys(dev->mdev, out, sizeof(out), MLX5_PTYS_EN,
port_num);
if (err)
return err;
ext = MLX5_CAP_PCAM_FEATURE(dev->mdev, ptys_extended_ethernet);
eth_prot_oper = MLX5_GET_ETH_PROTO(ptys_reg, out, ext, eth_proto_oper);
if (ext)
translate_eth_ext_proto_oper(eth_prot_oper, &props->active_speed,
&props->active_width);
else
translate_eth_proto_oper(eth_prot_oper, &props->active_speed,
&props->active_width);
props->port_cap_flags |= IB_PORT_CM_SUP;
props->port_cap_flags |= IB_PORT_IP_BASED_GIDS;
props->gid_tbl_len = MLX5_CAP_ROCE(dev->mdev,
roce_address_table_size);
props->max_mtu = IB_MTU_4096;
props->max_msg_sz = 1 << MLX5_CAP_GEN(dev->mdev, log_max_msg);
props->pkey_tbl_len = 1;
props->state = IB_PORT_DOWN;
props->phys_state = IB_PORT_PHYS_STATE_DISABLED;
mlx5_query_nic_vport_qkey_viol_cntr(dev->mdev, &qkey_viol_cntr);
props->qkey_viol_cntr = qkey_viol_cntr;
ndev = mlx5_ib_get_netdev(device, port_num);
if (!ndev)
return 0;
if (if_getdrvflags(ndev) & IFF_DRV_RUNNING &&
if_getlinkstate(ndev) == LINK_STATE_UP) {
props->state = IB_PORT_ACTIVE;
props->phys_state = IB_PORT_PHYS_STATE_LINK_UP;
}
ndev_ib_mtu = iboe_get_mtu(if_getmtu(ndev));
if_rele(ndev);
props->active_mtu = min(props->max_mtu, ndev_ib_mtu);
return 0;
}
static void ib_gid_to_mlx5_roce_addr(const union ib_gid *gid,
const struct ib_gid_attr *attr,
void *mlx5_addr)
{
#define MLX5_SET_RA(p, f, v) MLX5_SET(roce_addr_layout, p, f, v)
char *mlx5_addr_l3_addr = MLX5_ADDR_OF(roce_addr_layout, mlx5_addr,
source_l3_address);
void *mlx5_addr_mac = MLX5_ADDR_OF(roce_addr_layout, mlx5_addr,
source_mac_47_32);
u16 vlan_id;
if (!gid)
return;
ether_addr_copy(mlx5_addr_mac, if_getlladdr(attr->ndev));
vlan_id = rdma_vlan_dev_vlan_id(attr->ndev);
if (vlan_id != 0xffff) {
MLX5_SET_RA(mlx5_addr, vlan_valid, 1);
MLX5_SET_RA(mlx5_addr, vlan_id, vlan_id);
}
switch (attr->gid_type) {
case IB_GID_TYPE_IB:
MLX5_SET_RA(mlx5_addr, roce_version, MLX5_ROCE_VERSION_1);
break;
case IB_GID_TYPE_ROCE_UDP_ENCAP:
MLX5_SET_RA(mlx5_addr, roce_version, MLX5_ROCE_VERSION_2);
break;
default:
WARN_ON(true);
}
if (attr->gid_type != IB_GID_TYPE_IB) {
if (ipv6_addr_v4mapped((void *)gid))
MLX5_SET_RA(mlx5_addr, roce_l3_type,
MLX5_ROCE_L3_TYPE_IPV4);
else
MLX5_SET_RA(mlx5_addr, roce_l3_type,
MLX5_ROCE_L3_TYPE_IPV6);
}
if ((attr->gid_type == IB_GID_TYPE_IB) ||
!ipv6_addr_v4mapped((void *)gid))
memcpy(mlx5_addr_l3_addr, gid, sizeof(*gid));
else
memcpy(&mlx5_addr_l3_addr[12], &gid->raw[12], 4);
}
static int set_roce_addr(struct ib_device *device, u8 port_num,
unsigned int index,
const union ib_gid *gid,
const struct ib_gid_attr *attr)
{
struct mlx5_ib_dev *dev = to_mdev(device);
u32 in[MLX5_ST_SZ_DW(set_roce_address_in)] = {0};
u32 out[MLX5_ST_SZ_DW(set_roce_address_out)] = {0};
void *in_addr = MLX5_ADDR_OF(set_roce_address_in, in, roce_address);
enum rdma_link_layer ll = mlx5_ib_port_link_layer(device, port_num);
if (ll != IB_LINK_LAYER_ETHERNET)
return -EINVAL;
ib_gid_to_mlx5_roce_addr(gid, attr, in_addr);
MLX5_SET(set_roce_address_in, in, roce_address_index, index);
MLX5_SET(set_roce_address_in, in, opcode, MLX5_CMD_OP_SET_ROCE_ADDRESS);
return mlx5_cmd_exec(dev->mdev, in, sizeof(in), out, sizeof(out));
}
static int mlx5_ib_add_gid(struct ib_device *device, u8 port_num,
unsigned int index, const union ib_gid *gid,
const struct ib_gid_attr *attr,
__always_unused void **context)
{
return set_roce_addr(device, port_num, index, gid, attr);
}
static int mlx5_ib_del_gid(struct ib_device *device, u8 port_num,
unsigned int index, __always_unused void **context)
{
return set_roce_addr(device, port_num, index, NULL, NULL);
}
__be16 mlx5_get_roce_udp_sport(struct mlx5_ib_dev *dev, u8 port_num,
int index)
{
struct ib_gid_attr attr;
union ib_gid gid;
if (ib_get_cached_gid(&dev->ib_dev, port_num, index, &gid, &attr))
return 0;
if (!attr.ndev)
return 0;
if_rele(attr.ndev);
if (attr.gid_type != IB_GID_TYPE_ROCE_UDP_ENCAP)
return 0;
return cpu_to_be16(MLX5_CAP_ROCE(dev->mdev, r_roce_min_src_udp_port));
}
int mlx5_get_roce_gid_type(struct mlx5_ib_dev *dev, u8 port_num,
int index, enum ib_gid_type *gid_type)
{
struct ib_gid_attr attr;
union ib_gid gid;
int ret;
ret = ib_get_cached_gid(&dev->ib_dev, port_num, index, &gid, &attr);
if (ret)
return ret;
if (!attr.ndev)
return -ENODEV;
if_rele(attr.ndev);
*gid_type = attr.gid_type;
return 0;
}
static int mlx5_use_mad_ifc(struct mlx5_ib_dev *dev)
{
if (MLX5_CAP_GEN(dev->mdev, port_type) == MLX5_CAP_PORT_TYPE_IB)
return !MLX5_CAP_GEN(dev->mdev, ib_virt);
return 0;
}
enum {
MLX5_VPORT_ACCESS_METHOD_MAD,
MLX5_VPORT_ACCESS_METHOD_HCA,
MLX5_VPORT_ACCESS_METHOD_NIC,
};
static int mlx5_get_vport_access_method(struct ib_device *ibdev)
{
if (mlx5_use_mad_ifc(to_mdev(ibdev)))
return MLX5_VPORT_ACCESS_METHOD_MAD;
if (mlx5_ib_port_link_layer(ibdev, 1) ==
IB_LINK_LAYER_ETHERNET)
return MLX5_VPORT_ACCESS_METHOD_NIC;
return MLX5_VPORT_ACCESS_METHOD_HCA;
}
static void get_atomic_caps(struct mlx5_ib_dev *dev,
struct ib_device_attr *props)
{
u8 tmp;
u8 atomic_operations = MLX5_CAP_ATOMIC(dev->mdev, atomic_operations);
u8 atomic_size_qp = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_qp);
u8 atomic_req_8B_endianness_mode =
MLX5_CAP_ATOMIC(dev->mdev, atomic_req_8B_endianess_mode);
tmp = MLX5_ATOMIC_OPS_CMP_SWAP | MLX5_ATOMIC_OPS_FETCH_ADD;
if (((atomic_operations & tmp) == tmp) &&
(atomic_size_qp & MLX5_ATOMIC_SIZE_QP_8BYTES) &&
(atomic_req_8B_endianness_mode)) {
props->atomic_cap = IB_ATOMIC_HCA;
} else {
props->atomic_cap = IB_ATOMIC_NONE;
}
}
static int mlx5_query_system_image_guid(struct ib_device *ibdev,
__be64 *sys_image_guid)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct mlx5_core_dev *mdev = dev->mdev;
u64 tmp;
int err;
switch (mlx5_get_vport_access_method(ibdev)) {
case MLX5_VPORT_ACCESS_METHOD_MAD:
return mlx5_query_mad_ifc_system_image_guid(ibdev,
sys_image_guid);
case MLX5_VPORT_ACCESS_METHOD_HCA:
err = mlx5_query_hca_vport_system_image_guid(mdev, &tmp);
break;
case MLX5_VPORT_ACCESS_METHOD_NIC:
err = mlx5_query_nic_vport_system_image_guid(mdev, &tmp);
break;
default:
return -EINVAL;
}
if (!err)
*sys_image_guid = cpu_to_be64(tmp);
return err;
}
static int mlx5_query_max_pkeys(struct ib_device *ibdev,
u16 *max_pkeys)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct mlx5_core_dev *mdev = dev->mdev;
switch (mlx5_get_vport_access_method(ibdev)) {
case MLX5_VPORT_ACCESS_METHOD_MAD:
return mlx5_query_mad_ifc_max_pkeys(ibdev, max_pkeys);
case MLX5_VPORT_ACCESS_METHOD_HCA:
case MLX5_VPORT_ACCESS_METHOD_NIC:
*max_pkeys = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev,
pkey_table_size));
return 0;
default:
return -EINVAL;
}
}
static int mlx5_query_vendor_id(struct ib_device *ibdev,
u32 *vendor_id)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
switch (mlx5_get_vport_access_method(ibdev)) {
case MLX5_VPORT_ACCESS_METHOD_MAD:
return mlx5_query_mad_ifc_vendor_id(ibdev, vendor_id);
case MLX5_VPORT_ACCESS_METHOD_HCA:
case MLX5_VPORT_ACCESS_METHOD_NIC:
return mlx5_core_query_vendor_id(dev->mdev, vendor_id);
default:
return -EINVAL;
}
}
static int mlx5_query_node_guid(struct mlx5_ib_dev *dev,
__be64 *node_guid)
{
u64 tmp;
int err;
switch (mlx5_get_vport_access_method(&dev->ib_dev)) {
case MLX5_VPORT_ACCESS_METHOD_MAD:
return mlx5_query_mad_ifc_node_guid(dev, node_guid);
case MLX5_VPORT_ACCESS_METHOD_HCA:
err = mlx5_query_hca_vport_node_guid(dev->mdev, &tmp);
break;
case MLX5_VPORT_ACCESS_METHOD_NIC:
err = mlx5_query_nic_vport_node_guid(dev->mdev, &tmp);
break;
default:
return -EINVAL;
}
if (!err)
*node_guid = cpu_to_be64(tmp);
return err;
}
struct mlx5_reg_node_desc {
u8 desc[IB_DEVICE_NODE_DESC_MAX];
};
static int mlx5_query_node_desc(struct mlx5_ib_dev *dev, char *node_desc)
{
struct mlx5_reg_node_desc in;
if (mlx5_use_mad_ifc(dev))
return mlx5_query_mad_ifc_node_desc(dev, node_desc);
memset(&in, 0, sizeof(in));
return mlx5_core_access_reg(dev->mdev, &in, sizeof(in), node_desc,
sizeof(struct mlx5_reg_node_desc),
MLX5_REG_NODE_DESC, 0, 0);
}
static int mlx5_ib_query_device(struct ib_device *ibdev,
struct ib_device_attr *props,
struct ib_udata *uhw)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct mlx5_core_dev *mdev = dev->mdev;
int err = -ENOMEM;
int max_sq_desc;
int max_rq_sg;
int max_sq_sg;
u64 min_page_size = 1ull << MLX5_CAP_GEN(mdev, log_pg_sz);
struct mlx5_ib_query_device_resp resp = {};
size_t resp_len;
u64 max_tso;
resp_len = sizeof(resp.comp_mask) + sizeof(resp.response_length);
if (uhw->outlen && uhw->outlen < resp_len)
return -EINVAL;
else
resp.response_length = resp_len;
if (uhw->inlen && !ib_is_udata_cleared(uhw, 0, uhw->inlen))
return -EINVAL;
memset(props, 0, sizeof(*props));
err = mlx5_query_system_image_guid(ibdev,
&props->sys_image_guid);
if (err)
return err;
err = mlx5_query_max_pkeys(ibdev, &props->max_pkeys);
if (err)
return err;
err = mlx5_query_vendor_id(ibdev, &props->vendor_id);
if (err)
return err;
props->fw_ver = ((u64)fw_rev_maj(dev->mdev) << 32) |
((u32)fw_rev_min(dev->mdev) << 16) |
fw_rev_sub(dev->mdev);
props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
IB_DEVICE_PORT_ACTIVE_EVENT |
IB_DEVICE_SYS_IMAGE_GUID |
IB_DEVICE_RC_RNR_NAK_GEN |
IB_DEVICE_KNOWSEPOCH;
if (MLX5_CAP_GEN(mdev, pkv))
props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
if (MLX5_CAP_GEN(mdev, qkv))
props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
if (MLX5_CAP_GEN(mdev, apm))
props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
if (MLX5_CAP_GEN(mdev, xrc))
props->device_cap_flags |= IB_DEVICE_XRC;
if (MLX5_CAP_GEN(mdev, imaicl)) {
props->device_cap_flags |= IB_DEVICE_MEM_WINDOW |
IB_DEVICE_MEM_WINDOW_TYPE_2B;
props->max_mw = 1 << MLX5_CAP_GEN(mdev, log_max_mkey);
props->device_cap_flags |= IB_DEVICE_SG_GAPS_REG;
}
props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
if (MLX5_CAP_GEN(mdev, sho)) {
props->device_cap_flags |= IB_DEVICE_SIGNATURE_HANDOVER;
props->sig_prot_cap = IB_PROT_T10DIF_TYPE_1 |
IB_PROT_T10DIF_TYPE_2 |
IB_PROT_T10DIF_TYPE_3;
props->sig_guard_cap = IB_GUARD_T10DIF_CRC |
IB_GUARD_T10DIF_CSUM;
}
if (MLX5_CAP_GEN(mdev, block_lb_mc))
props->device_cap_flags |= IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads)) {
if (MLX5_CAP_ETH(mdev, csum_cap))
props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
if (field_avail(typeof(resp), tso_caps, uhw->outlen)) {
max_tso = MLX5_CAP_ETH(mdev, max_lso_cap);
if (max_tso) {
resp.tso_caps.max_tso = 1 << max_tso;
resp.tso_caps.supported_qpts |=
1 << IB_QPT_RAW_PACKET;
resp.response_length += sizeof(resp.tso_caps);
}
}
if (field_avail(typeof(resp), rss_caps, uhw->outlen)) {
resp.rss_caps.rx_hash_function =
MLX5_RX_HASH_FUNC_TOEPLITZ;
resp.rss_caps.rx_hash_fields_mask =
MLX5_RX_HASH_SRC_IPV4 |
MLX5_RX_HASH_DST_IPV4 |
MLX5_RX_HASH_SRC_IPV6 |
MLX5_RX_HASH_DST_IPV6 |
MLX5_RX_HASH_SRC_PORT_TCP |
MLX5_RX_HASH_DST_PORT_TCP |
MLX5_RX_HASH_SRC_PORT_UDP |
MLX5_RX_HASH_DST_PORT_UDP;
resp.response_length += sizeof(resp.rss_caps);
}
} else {
if (field_avail(typeof(resp), tso_caps, uhw->outlen))
resp.response_length += sizeof(resp.tso_caps);
if (field_avail(typeof(resp), rss_caps, uhw->outlen))
resp.response_length += sizeof(resp.rss_caps);
}
if (MLX5_CAP_GEN(mdev, ipoib_ipoib_offloads)) {
props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
props->device_cap_flags |= IB_DEVICE_UD_TSO;
}
if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
MLX5_CAP_ETH(dev->mdev, scatter_fcs))
props->device_cap_flags |= IB_DEVICE_RAW_SCATTER_FCS;
if (mlx5_get_flow_namespace(dev->mdev, MLX5_FLOW_NAMESPACE_BYPASS))
props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
props->vendor_part_id = mdev->pdev->device;
props->hw_ver = mdev->pdev->revision;
props->max_mr_size = ~0ull;
props->page_size_cap = ~(min_page_size - 1);
props->max_qp = 1 << MLX5_CAP_GEN(mdev, log_max_qp);
props->max_qp_wr = 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz);
max_rq_sg = MLX5_CAP_GEN(mdev, max_wqe_sz_rq) /
sizeof(struct mlx5_wqe_data_seg);
max_sq_desc = min_t(int, MLX5_CAP_GEN(mdev, max_wqe_sz_sq), 512);
max_sq_sg = (max_sq_desc - sizeof(struct mlx5_wqe_ctrl_seg) -
sizeof(struct mlx5_wqe_raddr_seg)) /
sizeof(struct mlx5_wqe_data_seg);
props->max_sge = min(max_rq_sg, max_sq_sg);
props->max_sge_rd = MLX5_MAX_SGE_RD;
props->max_cq = 1 << MLX5_CAP_GEN(mdev, log_max_cq);
props->max_cqe = (1 << MLX5_CAP_GEN(mdev, log_max_cq_sz)) - 1;
props->max_mr = 1 << MLX5_CAP_GEN(mdev, log_max_mkey);
props->max_pd = 1 << MLX5_CAP_GEN(mdev, log_max_pd);
props->max_qp_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_req_qp);
props->max_qp_init_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_res_qp);
props->max_srq = 1 << MLX5_CAP_GEN(mdev, log_max_srq);
props->max_srq_wr = (1 << MLX5_CAP_GEN(mdev, log_max_srq_sz)) - 1;
props->local_ca_ack_delay = MLX5_CAP_GEN(mdev, local_ca_ack_delay);
props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
props->max_srq_sge = max_rq_sg - 1;
props->max_fast_reg_page_list_len =
1 << MLX5_CAP_GEN(mdev, log_max_klm_list_size);
get_atomic_caps(dev, props);
props->masked_atomic_cap = IB_ATOMIC_NONE;
props->max_mcast_grp = 1 << MLX5_CAP_GEN(mdev, log_max_mcg);
props->max_mcast_qp_attach = MLX5_CAP_GEN(mdev, max_qp_mcg);
props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
props->max_mcast_grp;
props->max_map_per_fmr = INT_MAX;
props->hca_core_clock = MLX5_CAP_GEN(mdev, device_frequency_khz);
props->timestamp_mask = 0x7FFFFFFFFFFFFFFFULL;
#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
if (MLX5_CAP_GEN(mdev, pg))
props->device_cap_flags |= IB_DEVICE_ON_DEMAND_PAGING;
props->odp_caps = dev->odp_caps;
#endif
if (MLX5_CAP_GEN(mdev, cd))
props->device_cap_flags |= IB_DEVICE_CROSS_CHANNEL;
if (!mlx5_core_is_pf(mdev))
props->device_cap_flags |= IB_DEVICE_VIRTUAL_FUNCTION;
if (mlx5_ib_port_link_layer(ibdev, 1) ==
IB_LINK_LAYER_ETHERNET) {
props->rss_caps.max_rwq_indirection_tables =
1 << MLX5_CAP_GEN(dev->mdev, log_max_rqt);
props->rss_caps.max_rwq_indirection_table_size =
1 << MLX5_CAP_GEN(dev->mdev, log_max_rqt_size);
props->rss_caps.supported_qpts = 1 << IB_QPT_RAW_PACKET;
props->max_wq_type_rq =
1 << MLX5_CAP_GEN(dev->mdev, log_max_rq);
}
if (uhw->outlen) {
err = ib_copy_to_udata(uhw, &resp, resp.response_length);
if (err)
return err;
}
return 0;
}
enum mlx5_ib_width {
MLX5_IB_WIDTH_1X = 1 << 0,
MLX5_IB_WIDTH_2X = 1 << 1,
MLX5_IB_WIDTH_4X = 1 << 2,
MLX5_IB_WIDTH_8X = 1 << 3,
MLX5_IB_WIDTH_12X = 1 << 4
};
static int translate_active_width(struct ib_device *ibdev, u8 active_width,
u8 *ib_width)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
int err = 0;
if (active_width & MLX5_IB_WIDTH_1X) {
*ib_width = IB_WIDTH_1X;
} else if (active_width & MLX5_IB_WIDTH_2X) {
*ib_width = IB_WIDTH_2X;
} else if (active_width & MLX5_IB_WIDTH_4X) {
*ib_width = IB_WIDTH_4X;
} else if (active_width & MLX5_IB_WIDTH_8X) {
*ib_width = IB_WIDTH_8X;
} else if (active_width & MLX5_IB_WIDTH_12X) {
*ib_width = IB_WIDTH_12X;
} else {
mlx5_ib_dbg(dev, "Invalid active_width %d\n",
(int)active_width);
err = -EINVAL;
}
return err;
}
enum ib_max_vl_num {
__IB_MAX_VL_0 = 1,
__IB_MAX_VL_0_1 = 2,
__IB_MAX_VL_0_3 = 3,
__IB_MAX_VL_0_7 = 4,
__IB_MAX_VL_0_14 = 5,
};
enum mlx5_vl_hw_cap {
MLX5_VL_HW_0 = 1,
MLX5_VL_HW_0_1 = 2,
MLX5_VL_HW_0_2 = 3,
MLX5_VL_HW_0_3 = 4,
MLX5_VL_HW_0_4 = 5,
MLX5_VL_HW_0_5 = 6,
MLX5_VL_HW_0_6 = 7,
MLX5_VL_HW_0_7 = 8,
MLX5_VL_HW_0_14 = 15
};
static int translate_max_vl_num(struct ib_device *ibdev, u8 vl_hw_cap,
u8 *max_vl_num)
{
switch (vl_hw_cap) {
case MLX5_VL_HW_0:
*max_vl_num = __IB_MAX_VL_0;
break;
case MLX5_VL_HW_0_1:
*max_vl_num = __IB_MAX_VL_0_1;
break;
case MLX5_VL_HW_0_3:
*max_vl_num = __IB_MAX_VL_0_3;
break;
case MLX5_VL_HW_0_7:
*max_vl_num = __IB_MAX_VL_0_7;
break;
case MLX5_VL_HW_0_14:
*max_vl_num = __IB_MAX_VL_0_14;
break;
default:
return -EINVAL;
}
return 0;
}
static int mlx5_query_hca_port(struct ib_device *ibdev, u8 port,
struct ib_port_attr *props)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct mlx5_core_dev *mdev = dev->mdev;
u32 *rep;
int replen = MLX5_ST_SZ_BYTES(query_hca_vport_context_out);
struct mlx5_ptys_reg *ptys;
struct mlx5_pmtu_reg *pmtu;
struct mlx5_pvlc_reg pvlc;
void *ctx;
int err;
rep = mlx5_vzalloc(replen);
ptys = kzalloc(sizeof(*ptys), GFP_KERNEL);
pmtu = kzalloc(sizeof(*pmtu), GFP_KERNEL);
if (!rep || !ptys || !pmtu) {
err = -ENOMEM;
goto out;
}
memset(props, 0, sizeof(*props));
err = mlx5_query_hca_vport_context(mdev, port, 0, rep, replen);
if (err)
goto out;
ctx = MLX5_ADDR_OF(query_hca_vport_context_out, rep, hca_vport_context);
props->lid = MLX5_GET(hca_vport_context, ctx, lid);
props->lmc = MLX5_GET(hca_vport_context, ctx, lmc);
props->sm_lid = MLX5_GET(hca_vport_context, ctx, sm_lid);
props->sm_sl = MLX5_GET(hca_vport_context, ctx, sm_sl);
props->state = MLX5_GET(hca_vport_context, ctx, vport_state);
props->phys_state = MLX5_GET(hca_vport_context, ctx,
port_physical_state);
props->port_cap_flags = MLX5_GET(hca_vport_context, ctx, cap_mask1);
props->gid_tbl_len = mlx5_get_gid_table_len(MLX5_CAP_GEN(mdev, gid_table_size));
props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg);
props->pkey_tbl_len = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev, pkey_table_size));
props->bad_pkey_cntr = MLX5_GET(hca_vport_context, ctx,
pkey_violation_counter);
props->qkey_viol_cntr = MLX5_GET(hca_vport_context, ctx,
qkey_violation_counter);
props->subnet_timeout = MLX5_GET(hca_vport_context, ctx,
subnet_timeout);
props->init_type_reply = MLX5_GET(hca_vport_context, ctx,
init_type_reply);
props->grh_required = MLX5_GET(hca_vport_context, ctx, grh_required);
ptys->proto_mask |= MLX5_PTYS_IB;
ptys->local_port = port;
err = mlx5_core_access_ptys(mdev, ptys, 0);
if (err)
goto out;
err = translate_active_width(ibdev, ptys->ib_link_width_oper,
&props->active_width);
if (err)
goto out;
props->active_speed = (u8)ptys->ib_proto_oper;
pmtu->local_port = port;
err = mlx5_core_access_pmtu(mdev, pmtu, 0);
if (err)
goto out;
props->max_mtu = pmtu->max_mtu;
props->active_mtu = pmtu->oper_mtu;
memset(&pvlc, 0, sizeof(pvlc));
pvlc.local_port = port;
err = mlx5_core_access_pvlc(mdev, &pvlc, 0);
if (err)
goto out;
err = translate_max_vl_num(ibdev, pvlc.vl_hw_cap,
&props->max_vl_num);
out:
kvfree(rep);
kfree(ptys);
kfree(pmtu);
return err;
}
int mlx5_ib_query_port(struct ib_device *ibdev, u8 port,
struct ib_port_attr *props)
{
switch (mlx5_get_vport_access_method(ibdev)) {
case MLX5_VPORT_ACCESS_METHOD_MAD:
return mlx5_query_mad_ifc_port(ibdev, port, props);
case MLX5_VPORT_ACCESS_METHOD_HCA:
return mlx5_query_hca_port(ibdev, port, props);
case MLX5_VPORT_ACCESS_METHOD_NIC:
return mlx5_query_port_roce(ibdev, port, props);
default:
return -EINVAL;
}
}
static int mlx5_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
union ib_gid *gid)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct mlx5_core_dev *mdev = dev->mdev;
switch (mlx5_get_vport_access_method(ibdev)) {
case MLX5_VPORT_ACCESS_METHOD_MAD:
return mlx5_query_mad_ifc_gids(ibdev, port, index, gid);
case MLX5_VPORT_ACCESS_METHOD_HCA:
return mlx5_query_hca_vport_gid(mdev, port, 0, index, gid);
default:
return -EINVAL;
}
}
static int mlx5_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
u16 *pkey)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct mlx5_core_dev *mdev = dev->mdev;
switch (mlx5_get_vport_access_method(ibdev)) {
case MLX5_VPORT_ACCESS_METHOD_MAD:
return mlx5_query_mad_ifc_pkey(ibdev, port, index, pkey);
case MLX5_VPORT_ACCESS_METHOD_HCA:
case MLX5_VPORT_ACCESS_METHOD_NIC:
return mlx5_query_hca_vport_pkey(mdev, 0, port, 0, index,
pkey);
default:
return -EINVAL;
}
}
static int mlx5_ib_modify_device(struct ib_device *ibdev, int mask,
struct ib_device_modify *props)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct mlx5_reg_node_desc in;
struct mlx5_reg_node_desc out;
int err;
if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
return -EOPNOTSUPP;
if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
return 0;
memcpy(&in, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
err = mlx5_core_access_reg(dev->mdev, &in, sizeof(in), &out,
sizeof(out), MLX5_REG_NODE_DESC, 0, 1);
if (err)
return err;
memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX);
return err;
}
static int mlx5_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
struct ib_port_modify *props)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct ib_port_attr attr;
u32 tmp;
int err;
if (mlx5_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_ETHERNET)
return 0;
mutex_lock(&dev->cap_mask_mutex);
err = mlx5_ib_query_port(ibdev, port, &attr);
if (err)
goto out;
tmp = (attr.port_cap_flags | props->set_port_cap_mask) &
~props->clr_port_cap_mask;
err = mlx5_set_port_caps(dev->mdev, port, tmp);
out:
mutex_unlock(&dev->cap_mask_mutex);
return err;
}
static void print_lib_caps(struct mlx5_ib_dev *dev, u64 caps)
{
mlx5_ib_dbg(dev, "MLX5_LIB_CAP_4K_UAR = %s\n",
caps & MLX5_LIB_CAP_4K_UAR ? "y" : "n");
}
static u16 calc_dynamic_bfregs(int uars_per_sys_page)
{
if (uars_per_sys_page == 1 && PAGE_SIZE > 4096)
return MLX5_MIN_DYN_BFREGS;
return MLX5_MAX_DYN_BFREGS;
}
static int calc_total_bfregs(struct mlx5_ib_dev *dev, bool lib_uar_4k,
struct mlx5_ib_alloc_ucontext_req_v2 *req,
struct mlx5_bfreg_info *bfregi)
{
int uars_per_sys_page;
int bfregs_per_sys_page;
int ref_bfregs = req->total_num_bfregs;
if (req->total_num_bfregs == 0)
return -EINVAL;
BUILD_BUG_ON(MLX5_MAX_BFREGS % MLX5_NON_FP_BFREGS_IN_PAGE);
BUILD_BUG_ON(MLX5_MAX_BFREGS < MLX5_NON_FP_BFREGS_IN_PAGE);
if (req->total_num_bfregs > MLX5_MAX_BFREGS)
return -ENOMEM;
uars_per_sys_page = get_uars_per_sys_page(dev, lib_uar_4k);
bfregs_per_sys_page = uars_per_sys_page * MLX5_NON_FP_BFREGS_PER_UAR;
req->total_num_bfregs = ALIGN(req->total_num_bfregs, bfregs_per_sys_page);
if (req->num_low_latency_bfregs > req->total_num_bfregs - 1)
return -EINVAL;
bfregi->num_static_sys_pages = req->total_num_bfregs / bfregs_per_sys_page;
bfregi->num_dyn_bfregs = ALIGN(calc_dynamic_bfregs(uars_per_sys_page), bfregs_per_sys_page);
bfregi->total_num_bfregs = req->total_num_bfregs + bfregi->num_dyn_bfregs;
bfregi->num_sys_pages = bfregi->total_num_bfregs / bfregs_per_sys_page;
mlx5_ib_dbg(dev, "uar_4k: fw support %s, lib support %s, user requested %d bfregs, allocated %d, total bfregs %d, using %d sys pages\n",
MLX5_CAP_GEN(dev->mdev, uar_4k) ? "yes" : "no",
lib_uar_4k ? "yes" : "no", ref_bfregs,
req->total_num_bfregs, bfregi->total_num_bfregs,
bfregi->num_sys_pages);
return 0;
}
static int allocate_uars(struct mlx5_ib_dev *dev, struct mlx5_ib_ucontext *context)
{
struct mlx5_bfreg_info *bfregi;
int err;
int i;
bfregi = &context->bfregi;
for (i = 0; i < bfregi->num_static_sys_pages; i++) {
err = mlx5_cmd_alloc_uar(dev->mdev, &bfregi->sys_pages[i]);
if (err)
goto error;
mlx5_ib_dbg(dev, "allocated uar %d\n", bfregi->sys_pages[i]);
}
for (i = bfregi->num_static_sys_pages; i < bfregi->num_sys_pages; i++)
bfregi->sys_pages[i] = MLX5_IB_INVALID_UAR_INDEX;
return 0;
error:
for (--i; i >= 0; i--)
if (mlx5_cmd_free_uar(dev->mdev, bfregi->sys_pages[i]))
mlx5_ib_warn(dev, "failed to free uar %d\n", i);
return err;
}
static void deallocate_uars(struct mlx5_ib_dev *dev,
struct mlx5_ib_ucontext *context)
{
struct mlx5_bfreg_info *bfregi;
int i;
bfregi = &context->bfregi;
for (i = 0; i < bfregi->num_sys_pages; i++)
if (i < bfregi->num_static_sys_pages ||
bfregi->sys_pages[i] != MLX5_IB_INVALID_UAR_INDEX)
mlx5_cmd_free_uar(dev->mdev, bfregi->sys_pages[i]);
}
static int mlx5_ib_alloc_transport_domain(struct mlx5_ib_dev *dev, u32 *tdn,
u16 uid)
{
int err;
if (!MLX5_CAP_GEN(dev->mdev, log_max_transport_domain))
return 0;
err = mlx5_alloc_transport_domain(dev->mdev, tdn, uid);
if (err)
return err;
if ((MLX5_CAP_GEN(dev->mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH) ||
(!MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) &&
!MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc)))
return 0;
mutex_lock(&dev->lb_mutex);
dev->user_td++;
if (dev->user_td == 2)
err = mlx5_nic_vport_update_local_lb(dev->mdev, true);
mutex_unlock(&dev->lb_mutex);
if (err != 0)
mlx5_dealloc_transport_domain(dev->mdev, *tdn, uid);
return err;
}
static void mlx5_ib_dealloc_transport_domain(struct mlx5_ib_dev *dev, u32 tdn,
u16 uid)
{
if (!MLX5_CAP_GEN(dev->mdev, log_max_transport_domain))
return;
mlx5_dealloc_transport_domain(dev->mdev, tdn, uid);
if ((MLX5_CAP_GEN(dev->mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH) ||
(!MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) &&
!MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc)))
return;
mutex_lock(&dev->lb_mutex);
dev->user_td--;
if (dev->user_td < 2)
mlx5_nic_vport_update_local_lb(dev->mdev, false);
mutex_unlock(&dev->lb_mutex);
}
static int mlx5_ib_alloc_ucontext(struct ib_ucontext *uctx,
struct ib_udata *udata)
{
struct ib_device *ibdev = uctx->device;
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct mlx5_ib_alloc_ucontext_req_v2 req = {};
struct mlx5_ib_alloc_ucontext_resp resp = {};
struct mlx5_ib_ucontext *context = to_mucontext(uctx);
struct mlx5_bfreg_info *bfregi;
int ver;
int err;
size_t min_req_v2 = offsetof(struct mlx5_ib_alloc_ucontext_req_v2,
max_cqe_version);
bool lib_uar_4k;
bool lib_uar_dyn;
if (!dev->ib_active)
return -EAGAIN;
if (udata->inlen == sizeof(struct mlx5_ib_alloc_ucontext_req))
ver = 0;
else if (udata->inlen >= min_req_v2)
ver = 2;
else
return -EINVAL;
err = ib_copy_from_udata(&req, udata, min(udata->inlen, sizeof(req)));
if (err)
return err;
if (req.flags & ~MLX5_IB_ALLOC_UCTX_DEVX)
return -EOPNOTSUPP;
if (req.comp_mask || req.reserved0 || req.reserved1 || req.reserved2)
return -EOPNOTSUPP;
req.total_num_bfregs = ALIGN(req.total_num_bfregs,
MLX5_NON_FP_BFREGS_PER_UAR);
if (req.num_low_latency_bfregs > req.total_num_bfregs - 1)
return -EINVAL;
resp.qp_tab_size = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp);
if (mlx5_core_is_pf(dev->mdev) && MLX5_CAP_GEN(dev->mdev, bf))
resp.bf_reg_size = 1 << MLX5_CAP_GEN(dev->mdev, log_bf_reg_size);
resp.cache_line_size = cache_line_size();
resp.max_sq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq);
resp.max_rq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq);
resp.max_send_wqebb = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz);
resp.max_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz);
resp.max_srq_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_srq_sz);
resp.cqe_version = min_t(__u8,
(__u8)MLX5_CAP_GEN(dev->mdev, cqe_version),
req.max_cqe_version);
resp.log_uar_size = MLX5_CAP_GEN(dev->mdev, uar_4k) ?
MLX5_ADAPTER_PAGE_SHIFT : PAGE_SHIFT;
resp.num_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ?
MLX5_CAP_GEN(dev->mdev, num_of_uars_per_page) : 1;
resp.response_length = min(offsetof(typeof(resp), response_length) +
sizeof(resp.response_length), udata->outlen);
lib_uar_4k = req.lib_caps & MLX5_LIB_CAP_4K_UAR;
lib_uar_dyn = req.lib_caps & MLX5_LIB_CAP_DYN_UAR;
bfregi = &context->bfregi;
if (lib_uar_dyn) {
bfregi->lib_uar_dyn = lib_uar_dyn;
goto uar_done;
}
err = calc_total_bfregs(dev, lib_uar_4k, &req, bfregi);
if (err)
goto out_ctx;
mutex_init(&bfregi->lock);
bfregi->lib_uar_4k = lib_uar_4k;
bfregi->count = kcalloc(bfregi->total_num_bfregs, sizeof(*bfregi->count),
GFP_KERNEL);
if (!bfregi->count) {
err = -ENOMEM;
goto out_ctx;
}
bfregi->sys_pages = kcalloc(bfregi->num_sys_pages,
sizeof(*bfregi->sys_pages),
GFP_KERNEL);
if (!bfregi->sys_pages) {
err = -ENOMEM;
goto out_count;
}
err = allocate_uars(dev, context);
if (err)
goto out_sys_pages;
uar_done:
if (req.flags & MLX5_IB_ALLOC_UCTX_DEVX) {
err = mlx5_ib_devx_create(dev, true);
if (err < 0)
goto out_uars;
context->devx_uid = err;
}
err = mlx5_ib_alloc_transport_domain(dev, &context->tdn,
context->devx_uid);
if (err)
goto out_devx;
INIT_LIST_HEAD(&context->db_page_list);
mutex_init(&context->db_page_mutex);
resp.tot_bfregs = lib_uar_dyn ? 0 : req.total_num_bfregs;
resp.num_ports = MLX5_CAP_GEN(dev->mdev, num_ports);
if (field_avail(typeof(resp), cqe_version, udata->outlen))
resp.response_length += sizeof(resp.cqe_version);
if (field_avail(typeof(resp), cmds_supp_uhw, udata->outlen)) {
resp.cmds_supp_uhw |= MLX5_USER_CMDS_SUPP_UHW_QUERY_DEVICE |
MLX5_USER_CMDS_SUPP_UHW_CREATE_AH;
resp.response_length += sizeof(resp.cmds_supp_uhw);
}
if (offsetofend(typeof(resp), hca_core_clock_offset) <= udata->outlen) {
if (PAGE_SIZE <= 4096) {
resp.comp_mask |=
MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_CORE_CLOCK_OFFSET;
resp.hca_core_clock_offset =
offsetof(struct mlx5_init_seg, internal_timer_h) % PAGE_SIZE;
}
resp.response_length += sizeof(resp.hca_core_clock_offset);
}
if (offsetofend(typeof(resp), log_uar_size) <= udata->outlen)
resp.response_length += sizeof(resp.log_uar_size);
if (offsetofend(typeof(resp), num_uars_per_page) <= udata->outlen)
resp.response_length += sizeof(resp.num_uars_per_page);
if (offsetofend(typeof(resp), num_dyn_bfregs) <= udata->outlen) {
resp.num_dyn_bfregs = bfregi->num_dyn_bfregs;
resp.response_length += sizeof(resp.num_dyn_bfregs);
}
err = ib_copy_to_udata(udata, &resp, resp.response_length);
if (err)
goto out_mdev;
bfregi->ver = ver;
bfregi->num_low_latency_bfregs = req.num_low_latency_bfregs;
context->cqe_version = resp.cqe_version;
context->lib_caps = req.lib_caps;
print_lib_caps(dev, context->lib_caps);
return 0;
out_mdev:
mlx5_ib_dealloc_transport_domain(dev, context->tdn, context->devx_uid);
out_devx:
if (req.flags & MLX5_IB_ALLOC_UCTX_DEVX)
mlx5_ib_devx_destroy(dev, context->devx_uid);
out_uars:
deallocate_uars(dev, context);
out_sys_pages:
kfree(bfregi->sys_pages);
out_count:
kfree(bfregi->count);
out_ctx:
return err;
}
static void mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
{
struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
struct mlx5_bfreg_info *bfregi;
bfregi = &context->bfregi;
mlx5_ib_dealloc_transport_domain(dev, context->tdn, context->devx_uid);
if (context->devx_uid)
mlx5_ib_devx_destroy(dev, context->devx_uid);
deallocate_uars(dev, context);
kfree(bfregi->sys_pages);
kfree(bfregi->count);
}
static phys_addr_t uar_index2pfn(struct mlx5_ib_dev *dev,
int uar_idx)
{
int fw_uars_per_page;
fw_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ? MLX5_UARS_IN_PAGE : 1;
return (pci_resource_start(dev->mdev->pdev, 0) >> PAGE_SHIFT) + uar_idx / fw_uars_per_page;
}
static int get_command(unsigned long offset)
{
return (offset >> MLX5_IB_MMAP_CMD_SHIFT) & MLX5_IB_MMAP_CMD_MASK;
}
static int get_arg(unsigned long offset)
{
return offset & ((1 << MLX5_IB_MMAP_CMD_SHIFT) - 1);
}
static int get_index(unsigned long offset)
{
return get_arg(offset);
}
static int get_extended_index(unsigned long offset)
{
return get_arg(offset) | ((offset >> 16) & 0xff) << 8;
}
static void mlx5_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
{
}
static inline char *mmap_cmd2str(enum mlx5_ib_mmap_cmd cmd)
{
switch (cmd) {
case MLX5_IB_MMAP_WC_PAGE:
return "WC";
case MLX5_IB_MMAP_REGULAR_PAGE:
return "best effort WC";
case MLX5_IB_MMAP_NC_PAGE:
return "NC";
default:
return NULL;
}
}
static int mlx5_ib_mmap_clock_info_page(struct mlx5_ib_dev *dev,
struct vm_area_struct *vma,
struct mlx5_ib_ucontext *context)
{
if ((vma->vm_end - vma->vm_start != PAGE_SIZE) ||
!(vma->vm_flags & VM_SHARED))
return -EINVAL;
if (get_index(vma->vm_pgoff) != MLX5_IB_CLOCK_INFO_V1)
return -EOPNOTSUPP;
if (vma->vm_flags & (VM_WRITE | VM_EXEC))
return -EPERM;
return -EOPNOTSUPP;
}
static void mlx5_ib_mmap_free(struct rdma_user_mmap_entry *entry)
{
struct mlx5_user_mmap_entry *mentry = to_mmmap(entry);
struct mlx5_ib_dev *dev = to_mdev(entry->ucontext->device);
switch (mentry->mmap_flag) {
case MLX5_IB_MMAP_TYPE_UAR_WC:
case MLX5_IB_MMAP_TYPE_UAR_NC:
mlx5_cmd_free_uar(dev->mdev, mentry->page_idx);
kfree(mentry);
break;
default:
WARN_ON(true);
}
}
static int uar_mmap(struct mlx5_ib_dev *dev, enum mlx5_ib_mmap_cmd cmd,
struct vm_area_struct *vma,
struct mlx5_ib_ucontext *context)
{
struct mlx5_bfreg_info *bfregi = &context->bfregi;
int err;
unsigned long idx;
phys_addr_t pfn;
pgprot_t prot;
u32 bfreg_dyn_idx = 0;
u32 uar_index;
int dyn_uar = (cmd == MLX5_IB_MMAP_ALLOC_WC);
int max_valid_idx = dyn_uar ? bfregi->num_sys_pages :
bfregi->num_static_sys_pages;
if (bfregi->lib_uar_dyn)
return -EINVAL;
if (vma->vm_end - vma->vm_start != PAGE_SIZE)
return -EINVAL;
if (dyn_uar)
idx = get_extended_index(vma->vm_pgoff) + bfregi->num_static_sys_pages;
else
idx = get_index(vma->vm_pgoff);
if (idx >= max_valid_idx) {
mlx5_ib_warn(dev, "invalid uar index %lu, max=%d\n",
idx, max_valid_idx);
return -EINVAL;
}
switch (cmd) {
case MLX5_IB_MMAP_WC_PAGE:
case MLX5_IB_MMAP_ALLOC_WC:
case MLX5_IB_MMAP_REGULAR_PAGE:
prot = pgprot_writecombine(vma->vm_page_prot);
break;
case MLX5_IB_MMAP_NC_PAGE:
prot = pgprot_noncached(vma->vm_page_prot);
break;
default:
return -EINVAL;
}
if (dyn_uar) {
int uars_per_page;
uars_per_page = get_uars_per_sys_page(dev, bfregi->lib_uar_4k);
bfreg_dyn_idx = idx * (uars_per_page * MLX5_NON_FP_BFREGS_PER_UAR);
if (bfreg_dyn_idx >= bfregi->total_num_bfregs) {
mlx5_ib_warn(dev, "invalid bfreg_dyn_idx %u, max=%u\n",
bfreg_dyn_idx, bfregi->total_num_bfregs);
return -EINVAL;
}
mutex_lock(&bfregi->lock);
if (bfregi->count[bfreg_dyn_idx]) {
mlx5_ib_warn(dev, "wrong offset, idx %lu is busy, bfregn=%u\n", idx, bfreg_dyn_idx);
mutex_unlock(&bfregi->lock);
return -EINVAL;
}
bfregi->count[bfreg_dyn_idx]++;
mutex_unlock(&bfregi->lock);
err = mlx5_cmd_alloc_uar(dev->mdev, &uar_index);
if (err) {
mlx5_ib_warn(dev, "UAR alloc failed\n");
goto free_bfreg;
}
} else {
uar_index = bfregi->sys_pages[idx];
}
pfn = uar_index2pfn(dev, uar_index);
mlx5_ib_dbg(dev, "uar idx 0x%lx, pfn %pa\n", idx, &pfn);
err = rdma_user_mmap_io(&context->ibucontext, vma, pfn, PAGE_SIZE,
prot, NULL);
if (err) {
mlx5_ib_err(dev,
"rdma_user_mmap_io failed with error=%d, mmap_cmd=%s\n",
err, mmap_cmd2str(cmd));
goto err;
}
if (dyn_uar)
bfregi->sys_pages[idx] = uar_index;
return 0;
err:
if (!dyn_uar)
return err;
mlx5_cmd_free_uar(dev->mdev, idx);
free_bfreg:
mlx5_ib_free_bfreg(dev, bfregi, bfreg_dyn_idx);
return err;
}
static unsigned long mlx5_vma_to_pgoff(struct vm_area_struct *vma)
{
unsigned long idx;
u8 command;
command = get_command(vma->vm_pgoff);
idx = get_extended_index(vma->vm_pgoff);
return (command << 16 | idx);
}
static int mlx5_ib_mmap_offset(struct mlx5_ib_dev *dev,
struct vm_area_struct *vma,
struct ib_ucontext *ucontext)
{
struct mlx5_user_mmap_entry *mentry;
struct rdma_user_mmap_entry *entry;
unsigned long pgoff;
pgprot_t prot;
phys_addr_t pfn;
int ret;
pgoff = mlx5_vma_to_pgoff(vma);
entry = rdma_user_mmap_entry_get_pgoff(ucontext, pgoff);
if (!entry)
return -EINVAL;
mentry = to_mmmap(entry);
pfn = (mentry->address >> PAGE_SHIFT);
if (mentry->mmap_flag == MLX5_IB_MMAP_TYPE_VAR ||
mentry->mmap_flag == MLX5_IB_MMAP_TYPE_UAR_NC)
prot = pgprot_noncached(vma->vm_page_prot);
else
prot = pgprot_writecombine(vma->vm_page_prot);
ret = rdma_user_mmap_io(ucontext, vma, pfn,
entry->npages * PAGE_SIZE,
prot,
entry);
rdma_user_mmap_entry_put(&mentry->rdma_entry);
return ret;
}
static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma)
{
struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
unsigned long command;
phys_addr_t pfn;
command = get_command(vma->vm_pgoff);
switch (command) {
case MLX5_IB_MMAP_WC_PAGE:
case MLX5_IB_MMAP_ALLOC_WC:
if (!dev->wc_support)
return -EPERM;
case MLX5_IB_MMAP_NC_PAGE:
case MLX5_IB_MMAP_REGULAR_PAGE:
return uar_mmap(dev, command, vma, context);
case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES:
return -ENOSYS;
case MLX5_IB_MMAP_CORE_CLOCK:
if (vma->vm_end - vma->vm_start != PAGE_SIZE)
return -EINVAL;
if (vma->vm_flags & VM_WRITE)
return -EPERM;
if (PAGE_SIZE > 4096)
return -EOPNOTSUPP;
pfn = (dev->mdev->iseg_base +
offsetof(struct mlx5_init_seg, internal_timer_h)) >>
PAGE_SHIFT;
return rdma_user_mmap_io(&context->ibucontext, vma, pfn,
PAGE_SIZE,
pgprot_noncached(vma->vm_page_prot),
NULL);
case MLX5_IB_MMAP_CLOCK_INFO:
return mlx5_ib_mmap_clock_info_page(dev, vma, context);
default:
return mlx5_ib_mmap_offset(dev, vma, ibcontext);
}
return 0;
}
static int mlx5_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
{
struct mlx5_ib_pd *pd = to_mpd(ibpd);
struct ib_device *ibdev = ibpd->device;
struct mlx5_ib_alloc_pd_resp resp;
int err;
struct mlx5_ib_ucontext *context = rdma_udata_to_drv_context(
udata, struct mlx5_ib_ucontext, ibucontext);
u16 uid = context ? context->devx_uid : 0;
err = mlx5_core_alloc_pd(to_mdev(ibdev)->mdev, &pd->pdn, uid);
if (err)
return (err);
pd->uid = uid;
if (udata) {
resp.pdn = pd->pdn;
if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
mlx5_core_dealloc_pd(to_mdev(ibdev)->mdev, pd->pdn, uid);
return -EFAULT;
}
}
return 0;
}
static void mlx5_ib_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata)
{
struct mlx5_ib_dev *mdev = to_mdev(pd->device);
struct mlx5_ib_pd *mpd = to_mpd(pd);
mlx5_core_dealloc_pd(mdev->mdev, mpd->pdn, mpd->uid);
}
enum {
MATCH_CRITERIA_ENABLE_OUTER_BIT,
MATCH_CRITERIA_ENABLE_MISC_BIT,
MATCH_CRITERIA_ENABLE_INNER_BIT
};
#define HEADER_IS_ZERO(match_criteria, headers) \
!(memchr_inv(MLX5_ADDR_OF(fte_match_param, match_criteria, headers), \
0, MLX5_FLD_SZ_BYTES(fte_match_param, headers))) \
static u8 get_match_criteria_enable(u32 *match_criteria)
{
u8 match_criteria_enable;
match_criteria_enable =
(!HEADER_IS_ZERO(match_criteria, outer_headers)) <<
MATCH_CRITERIA_ENABLE_OUTER_BIT;
match_criteria_enable |=
(!HEADER_IS_ZERO(match_criteria, misc_parameters)) <<
MATCH_CRITERIA_ENABLE_MISC_BIT;
match_criteria_enable |=
(!HEADER_IS_ZERO(match_criteria, inner_headers)) <<
MATCH_CRITERIA_ENABLE_INNER_BIT;
return match_criteria_enable;
}
static void set_proto(void *outer_c, void *outer_v, u8 mask, u8 val)
{
MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_protocol, mask);
MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_protocol, val);
}
static void set_tos(void *outer_c, void *outer_v, u8 mask, u8 val)
{
MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_ecn, mask);
MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_ecn, val);
MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_dscp, mask >> 2);
MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_dscp, val >> 2);
}
#define LAST_ETH_FIELD vlan_tag
#define LAST_IB_FIELD sl
#define LAST_IPV4_FIELD tos
#define LAST_IPV6_FIELD traffic_class
#define LAST_TCP_UDP_FIELD src_port
#define FIELDS_NOT_SUPPORTED(filter, field)\
memchr_inv((void *)&filter.field +\
sizeof(filter.field), 0,\
sizeof(filter) -\
offsetof(typeof(filter), field) -\
sizeof(filter.field))
static int parse_flow_attr(u32 *match_c, u32 *match_v,
const union ib_flow_spec *ib_spec)
{
void *outer_headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
outer_headers);
void *outer_headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
outer_headers);
void *misc_params_c = MLX5_ADDR_OF(fte_match_param, match_c,
misc_parameters);
void *misc_params_v = MLX5_ADDR_OF(fte_match_param, match_v,
misc_parameters);
switch (ib_spec->type) {
case IB_FLOW_SPEC_ETH:
if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD))
return -ENOTSUPP;
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
dmac_47_16),
ib_spec->eth.mask.dst_mac);
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v,
dmac_47_16),
ib_spec->eth.val.dst_mac);
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
smac_47_16),
ib_spec->eth.mask.src_mac);
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v,
smac_47_16),
ib_spec->eth.val.src_mac);
if (ib_spec->eth.mask.vlan_tag) {
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
cvlan_tag, 1);
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
cvlan_tag, 1);
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
first_vid, ntohs(ib_spec->eth.mask.vlan_tag));
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
first_vid, ntohs(ib_spec->eth.val.vlan_tag));
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
first_cfi,
ntohs(ib_spec->eth.mask.vlan_tag) >> 12);
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
first_cfi,
ntohs(ib_spec->eth.val.vlan_tag) >> 12);
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
first_prio,
ntohs(ib_spec->eth.mask.vlan_tag) >> 13);
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
first_prio,
ntohs(ib_spec->eth.val.vlan_tag) >> 13);
}
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
ethertype, ntohs(ib_spec->eth.mask.ether_type));
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
ethertype, ntohs(ib_spec->eth.val.ether_type));
break;
case IB_FLOW_SPEC_IPV4:
if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD))
return -ENOTSUPP;
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
ethertype, 0xffff);
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
ethertype, ETH_P_IP);
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
src_ipv4_src_ipv6.ipv4_layout.ipv4),
&ib_spec->ipv4.mask.src_ip,
sizeof(ib_spec->ipv4.mask.src_ip));
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v,
src_ipv4_src_ipv6.ipv4_layout.ipv4),
&ib_spec->ipv4.val.src_ip,
sizeof(ib_spec->ipv4.val.src_ip));
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
&ib_spec->ipv4.mask.dst_ip,
sizeof(ib_spec->ipv4.mask.dst_ip));
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v,
dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
&ib_spec->ipv4.val.dst_ip,
sizeof(ib_spec->ipv4.val.dst_ip));
set_tos(outer_headers_c, outer_headers_v,
ib_spec->ipv4.mask.tos, ib_spec->ipv4.val.tos);
set_proto(outer_headers_c, outer_headers_v,
ib_spec->ipv4.mask.proto, ib_spec->ipv4.val.proto);
break;
case IB_FLOW_SPEC_IPV6:
if (FIELDS_NOT_SUPPORTED(ib_spec->ipv6.mask, LAST_IPV6_FIELD))
return -ENOTSUPP;
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
ethertype, 0xffff);
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
ethertype, ETH_P_IPV6);
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
src_ipv4_src_ipv6.ipv6_layout.ipv6),
&ib_spec->ipv6.mask.src_ip,
sizeof(ib_spec->ipv6.mask.src_ip));
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v,
src_ipv4_src_ipv6.ipv6_layout.ipv6),
&ib_spec->ipv6.val.src_ip,
sizeof(ib_spec->ipv6.val.src_ip));
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
&ib_spec->ipv6.mask.dst_ip,
sizeof(ib_spec->ipv6.mask.dst_ip));
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v,
dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
&ib_spec->ipv6.val.dst_ip,
sizeof(ib_spec->ipv6.val.dst_ip));
set_tos(outer_headers_c, outer_headers_v,
ib_spec->ipv6.mask.traffic_class,
ib_spec->ipv6.val.traffic_class);
set_proto(outer_headers_c, outer_headers_v,
ib_spec->ipv6.mask.next_hdr,
ib_spec->ipv6.val.next_hdr);
MLX5_SET(fte_match_set_misc, misc_params_c,
outer_ipv6_flow_label,
ntohl(ib_spec->ipv6.mask.flow_label));
MLX5_SET(fte_match_set_misc, misc_params_v,
outer_ipv6_flow_label,
ntohl(ib_spec->ipv6.val.flow_label));
break;
case IB_FLOW_SPEC_TCP:
if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask,
LAST_TCP_UDP_FIELD))
return -ENOTSUPP;
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, ip_protocol,
0xff);
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, ip_protocol,
IPPROTO_TCP);
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, tcp_sport,
ntohs(ib_spec->tcp_udp.mask.src_port));
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, tcp_sport,
ntohs(ib_spec->tcp_udp.val.src_port));
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, tcp_dport,
ntohs(ib_spec->tcp_udp.mask.dst_port));
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, tcp_dport,
ntohs(ib_spec->tcp_udp.val.dst_port));
break;
case IB_FLOW_SPEC_UDP:
if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask,
LAST_TCP_UDP_FIELD))
return -ENOTSUPP;
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, ip_protocol,
0xff);
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, ip_protocol,
IPPROTO_UDP);
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, udp_sport,
ntohs(ib_spec->tcp_udp.mask.src_port));
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, udp_sport,
ntohs(ib_spec->tcp_udp.val.src_port));
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, udp_dport,
ntohs(ib_spec->tcp_udp.mask.dst_port));
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, udp_dport,
ntohs(ib_spec->tcp_udp.val.dst_port));
break;
default:
return -EINVAL;
}
return 0;
}
static bool flow_is_multicast_only(struct ib_flow_attr *ib_attr)
{
struct ib_flow_spec_eth *eth_spec;
if (ib_attr->type != IB_FLOW_ATTR_NORMAL ||
ib_attr->size < sizeof(struct ib_flow_attr) +
sizeof(struct ib_flow_spec_eth) ||
ib_attr->num_of_specs < 1)
return false;
eth_spec = (struct ib_flow_spec_eth *)(ib_attr + 1);
if (eth_spec->type != IB_FLOW_SPEC_ETH ||
eth_spec->size != sizeof(*eth_spec))
return false;
return is_multicast_ether_addr(eth_spec->mask.dst_mac) &&
is_multicast_ether_addr(eth_spec->val.dst_mac);
}
static bool is_valid_attr(const struct ib_flow_attr *flow_attr)
{
union ib_flow_spec *ib_spec = (union ib_flow_spec *)(flow_attr + 1);
bool has_ipv4_spec = false;
bool eth_type_ipv4 = true;
unsigned int spec_index;
for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
if (ib_spec->type == IB_FLOW_SPEC_ETH &&
ib_spec->eth.mask.ether_type) {
if (!((ib_spec->eth.mask.ether_type == htons(0xffff)) &&
ib_spec->eth.val.ether_type == htons(ETH_P_IP)))
eth_type_ipv4 = false;
} else if (ib_spec->type == IB_FLOW_SPEC_IPV4) {
has_ipv4_spec = true;
}
ib_spec = (void *)ib_spec + ib_spec->size;
}
return !has_ipv4_spec || eth_type_ipv4;
}
static void put_flow_table(struct mlx5_ib_dev *dev,
struct mlx5_ib_flow_prio *prio, bool ft_added)
{
prio->refcount -= !!ft_added;
if (!prio->refcount) {
mlx5_destroy_flow_table(prio->flow_table);
prio->flow_table = NULL;
}
}
static int mlx5_ib_destroy_flow(struct ib_flow *flow_id)
{
struct mlx5_ib_dev *dev = to_mdev(flow_id->qp->device);
struct mlx5_ib_flow_handler *handler = container_of(flow_id,
struct mlx5_ib_flow_handler,
ibflow);
struct mlx5_ib_flow_handler *iter, *tmp;
mutex_lock(&dev->flow_db.lock);
list_for_each_entry_safe(iter, tmp, &handler->list, list) {
mlx5_del_flow_rules(&iter->rule);
put_flow_table(dev, iter->prio, true);
list_del(&iter->list);
kfree(iter);
}
mlx5_del_flow_rules(&handler->rule);
put_flow_table(dev, handler->prio, true);
mutex_unlock(&dev->flow_db.lock);
kfree(handler);
return 0;
}
static int ib_prio_to_core_prio(unsigned int priority, bool dont_trap)
{
priority *= 2;
if (!dont_trap)
priority++;
return priority;
}
enum flow_table_type {
MLX5_IB_FT_RX,
MLX5_IB_FT_TX
};
#define MLX5_FS_MAX_TYPES 10
#define MLX5_FS_MAX_ENTRIES 32000UL
static struct mlx5_ib_flow_prio *get_flow_table(struct mlx5_ib_dev *dev,
struct ib_flow_attr *flow_attr,
enum flow_table_type ft_type)
{
bool dont_trap = flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP;
struct mlx5_flow_table_attr ft_attr = {};
struct mlx5_flow_namespace *ns = NULL;
struct mlx5_ib_flow_prio *prio;
struct mlx5_flow_table *ft;
int num_entries;
int num_groups;
int priority;
int err = 0;
if (flow_attr->type == IB_FLOW_ATTR_NORMAL) {
if (flow_is_multicast_only(flow_attr) &&
!dont_trap)
priority = MLX5_IB_FLOW_MCAST_PRIO;
else
priority = ib_prio_to_core_prio(flow_attr->priority,
dont_trap);
ns = mlx5_get_flow_namespace(dev->mdev,
MLX5_FLOW_NAMESPACE_BYPASS);
num_entries = MLX5_FS_MAX_ENTRIES;
num_groups = MLX5_FS_MAX_TYPES;
prio = &dev->flow_db.prios[priority];
} else if (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT) {
ns = mlx5_get_flow_namespace(dev->mdev,
MLX5_FLOW_NAMESPACE_LEFTOVERS);
build_leftovers_ft_param("bypass", &priority,
&num_entries,
&num_groups);
prio = &dev->flow_db.prios[MLX5_IB_FLOW_LEFTOVERS_PRIO];
} else if (flow_attr->type == IB_FLOW_ATTR_SNIFFER) {
if (!MLX5_CAP_FLOWTABLE(dev->mdev,
allow_sniffer_and_nic_rx_shared_tir))
return ERR_PTR(-ENOTSUPP);
ns = mlx5_get_flow_namespace(dev->mdev, ft_type == MLX5_IB_FT_RX ?
MLX5_FLOW_NAMESPACE_SNIFFER_RX :
MLX5_FLOW_NAMESPACE_SNIFFER_TX);
prio = &dev->flow_db.sniffer[ft_type];
priority = 0;
num_entries = 1;
num_groups = 1;
}
if (!ns)
return ERR_PTR(-ENOTSUPP);
ft = prio->flow_table;
if (!ft) {
ft_attr.prio = priority;
ft_attr.max_fte = num_entries;
ft_attr.autogroup.max_num_groups = num_groups;
ft = mlx5_create_auto_grouped_flow_table(ns, &ft_attr);
if (!IS_ERR(ft)) {
prio->refcount = 0;
prio->flow_table = ft;
} else {
err = PTR_ERR(ft);
}
}
return err ? ERR_PTR(err) : prio;
}
static struct mlx5_ib_flow_handler *create_flow_rule(struct mlx5_ib_dev *dev,
struct mlx5_ib_flow_prio *ft_prio,
const struct ib_flow_attr *flow_attr,
struct mlx5_flow_destination *dst)
{
struct mlx5_flow_table *ft = ft_prio->flow_table;
struct mlx5_ib_flow_handler *handler;
struct mlx5_flow_spec *spec;
const void *ib_flow = (const void *)flow_attr + sizeof(*flow_attr);
unsigned int spec_index;
struct mlx5_flow_act flow_act = {};
u32 action;
int err = 0;
if (!is_valid_attr(flow_attr))
return ERR_PTR(-EINVAL);
spec = mlx5_vzalloc(sizeof(*spec));
handler = kzalloc(sizeof(*handler), GFP_KERNEL);
if (!handler || !spec) {
err = -ENOMEM;
goto free;
}
spec->flow_context.flags = FLOW_CONTEXT_HAS_TAG;
spec->flow_context.flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
INIT_LIST_HEAD(&handler->list);
for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
err = parse_flow_attr(spec->match_criteria,
spec->match_value, ib_flow);
if (err < 0)
goto free;
ib_flow += ((union ib_flow_spec *)ib_flow)->size;
}
spec->match_criteria_enable = get_match_criteria_enable(spec->match_criteria);
action = dst ? MLX5_FLOW_CONTEXT_ACTION_FWD_DEST : 0;
flow_act.action = action;
handler->rule = mlx5_add_flow_rules(ft, spec, &flow_act, dst, 1);
if (IS_ERR(handler->rule)) {
err = PTR_ERR(handler->rule);
goto free;
}
ft_prio->refcount++;
handler->prio = ft_prio;
ft_prio->flow_table = ft;
free:
if (err)
kfree(handler);
kvfree(spec);
return err ? ERR_PTR(err) : handler;
}
static struct mlx5_ib_flow_handler *create_dont_trap_rule(struct mlx5_ib_dev *dev,
struct mlx5_ib_flow_prio *ft_prio,
struct ib_flow_attr *flow_attr,
struct mlx5_flow_destination *dst)
{
struct mlx5_ib_flow_handler *handler_dst = NULL;
struct mlx5_ib_flow_handler *handler = NULL;
handler = create_flow_rule(dev, ft_prio, flow_attr, NULL);
if (!IS_ERR(handler)) {
handler_dst = create_flow_rule(dev, ft_prio,
flow_attr, dst);
if (IS_ERR(handler_dst)) {
mlx5_del_flow_rules(&handler->rule);
ft_prio->refcount--;
kfree(handler);
handler = handler_dst;
} else {
list_add(&handler_dst->list, &handler->list);
}
}
return handler;
}
enum {
LEFTOVERS_MC,
LEFTOVERS_UC,
};
static struct mlx5_ib_flow_handler *create_leftovers_rule(struct mlx5_ib_dev *dev,
struct mlx5_ib_flow_prio *ft_prio,
struct ib_flow_attr *flow_attr,
struct mlx5_flow_destination *dst)
{
struct mlx5_ib_flow_handler *handler_ucast = NULL;
struct mlx5_ib_flow_handler *handler = NULL;
static struct {
struct ib_flow_attr flow_attr;
struct ib_flow_spec_eth eth_flow;
} leftovers_specs[] = {
[LEFTOVERS_MC] = {
.flow_attr = {
.num_of_specs = 1,
.size = sizeof(leftovers_specs[0])
},
.eth_flow = {
.type = IB_FLOW_SPEC_ETH,
.size = sizeof(struct ib_flow_spec_eth),
.mask = {.dst_mac = {0x1} },
.val = {.dst_mac = {0x1} }
}
},
[LEFTOVERS_UC] = {
.flow_attr = {
.num_of_specs = 1,
.size = sizeof(leftovers_specs[0])
},
.eth_flow = {
.type = IB_FLOW_SPEC_ETH,
.size = sizeof(struct ib_flow_spec_eth),
.mask = {.dst_mac = {0x1} },
.val = {.dst_mac = {} }
}
}
};
handler = create_flow_rule(dev, ft_prio,
&leftovers_specs[LEFTOVERS_MC].flow_attr,
dst);
if (!IS_ERR(handler) &&
flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT) {
handler_ucast = create_flow_rule(dev, ft_prio,
&leftovers_specs[LEFTOVERS_UC].flow_attr,
dst);
if (IS_ERR(handler_ucast)) {
mlx5_del_flow_rules(&handler->rule);
ft_prio->refcount--;
kfree(handler);
handler = handler_ucast;
} else {
list_add(&handler_ucast->list, &handler->list);
}
}
return handler;
}
static struct mlx5_ib_flow_handler *create_sniffer_rule(struct mlx5_ib_dev *dev,
struct mlx5_ib_flow_prio *ft_rx,
struct mlx5_ib_flow_prio *ft_tx,
struct mlx5_flow_destination *dst)
{
struct mlx5_ib_flow_handler *handler_rx;
struct mlx5_ib_flow_handler *handler_tx;
int err;
static const struct ib_flow_attr flow_attr = {
.num_of_specs = 0,
.type = IB_FLOW_ATTR_SNIFFER,
.size = sizeof(flow_attr)
};
handler_rx = create_flow_rule(dev, ft_rx, &flow_attr, dst);
if (IS_ERR(handler_rx)) {
err = PTR_ERR(handler_rx);
goto err;
}
handler_tx = create_flow_rule(dev, ft_tx, &flow_attr, dst);
if (IS_ERR(handler_tx)) {
err = PTR_ERR(handler_tx);
goto err_tx;
}
list_add(&handler_tx->list, &handler_rx->list);
return handler_rx;
err_tx:
mlx5_del_flow_rules(&handler_rx->rule);
ft_rx->refcount--;
kfree(handler_rx);
err:
return ERR_PTR(err);
}
static struct ib_flow *mlx5_ib_create_flow(struct ib_qp *qp,
struct ib_flow_attr *flow_attr,
int domain,
struct ib_udata *udata)
{
struct mlx5_ib_dev *dev = to_mdev(qp->device);
struct mlx5_ib_qp *mqp = to_mqp(qp);
struct mlx5_ib_flow_handler *handler = NULL;
struct mlx5_flow_destination *dst = NULL;
struct mlx5_ib_flow_prio *ft_prio_tx = NULL;
struct mlx5_ib_flow_prio *ft_prio;
struct mlx5_ib_create_flow *ucmd = NULL, ucmd_hdr;
size_t min_ucmd_sz, required_ucmd_sz;
int err;
if (udata && udata->inlen) {
min_ucmd_sz = offsetofend(struct mlx5_ib_create_flow, reserved);
if (udata->inlen < min_ucmd_sz)
return ERR_PTR(-EOPNOTSUPP);
err = ib_copy_from_udata(&ucmd_hdr, udata, min_ucmd_sz);
if (err)
return ERR_PTR(err);
if (ucmd_hdr.ncounters_data > 1)
return ERR_PTR(-EINVAL);
required_ucmd_sz = min_ucmd_sz +
sizeof(struct mlx5_ib_flow_counters_data) *
ucmd_hdr.ncounters_data;
if (udata->inlen > required_ucmd_sz &&
!ib_is_udata_cleared(udata, required_ucmd_sz,
udata->inlen - required_ucmd_sz))
return ERR_PTR(-EOPNOTSUPP);
ucmd = kzalloc(required_ucmd_sz, GFP_KERNEL);
if (!ucmd)
return ERR_PTR(-ENOMEM);
err = ib_copy_from_udata(ucmd, udata, required_ucmd_sz);
if (err)
goto free_ucmd;
}
if (flow_attr->priority > MLX5_IB_FLOW_LAST_PRIO) {
err = -ENOMEM;
goto free_ucmd;
}
if (flow_attr->flags & ~IB_FLOW_ATTR_FLAGS_DONT_TRAP) {
err = -EINVAL;
goto free_ucmd;
}
dst = kzalloc(sizeof(*dst), GFP_KERNEL);
if (!dst) {
err = -ENOMEM;
goto free_ucmd;
}
mutex_lock(&dev->flow_db.lock);
ft_prio = get_flow_table(dev, flow_attr, MLX5_IB_FT_RX);
if (IS_ERR(ft_prio)) {
err = PTR_ERR(ft_prio);
goto unlock;
}
if (flow_attr->type == IB_FLOW_ATTR_SNIFFER) {
ft_prio_tx = get_flow_table(dev, flow_attr, MLX5_IB_FT_TX);
if (IS_ERR(ft_prio_tx)) {
err = PTR_ERR(ft_prio_tx);
ft_prio_tx = NULL;
goto destroy_ft;
}
}
dst->type = MLX5_FLOW_DESTINATION_TYPE_TIR;
if (mqp->flags & MLX5_IB_QP_RSS)
dst->tir_num = mqp->rss_qp.tirn;
else
dst->tir_num = mqp->raw_packet_qp.rq.tirn;
switch (flow_attr->type) {
case IB_FLOW_ATTR_NORMAL:
if (mqp->flags & IB_QP_CREATE_SOURCE_QPN) {
err = -EOPNOTSUPP;
goto destroy_ft;
}
if (flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) {
handler = create_dont_trap_rule(dev, ft_prio, flow_attr, dst);
} else {
handler = create_flow_rule(dev, ft_prio, flow_attr, dst);
}
break;
case IB_FLOW_ATTR_ALL_DEFAULT:
case IB_FLOW_ATTR_MC_DEFAULT:
handler = create_leftovers_rule(dev, ft_prio, flow_attr, dst);
break;
case IB_FLOW_ATTR_SNIFFER:
handler = create_sniffer_rule(dev, ft_prio, ft_prio_tx, dst);
break;
default:
err = -EINVAL;
goto destroy_ft;
}
if (IS_ERR(handler)) {
err = PTR_ERR(handler);
handler = NULL;
goto destroy_ft;
}
mutex_unlock(&dev->flow_db.lock);
kfree(dst);
kfree(ucmd);
return &handler->ibflow;
destroy_ft:
put_flow_table(dev, ft_prio, false);
if (ft_prio_tx)
put_flow_table(dev, ft_prio_tx, false);
unlock:
mutex_unlock(&dev->flow_db.lock);
kfree(dst);
free_ucmd:
kfree(ucmd);
return ERR_PTR(err);
}
static int mlx5_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
{
struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
int err;
err = mlx5_core_attach_mcg(dev->mdev, gid, ibqp->qp_num);
if (err)
mlx5_ib_warn(dev, "failed attaching QPN 0x%x, MGID %pI6\n",
ibqp->qp_num, gid->raw);
return err;
}
static int mlx5_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
{
struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
int err;
err = mlx5_core_detach_mcg(dev->mdev, gid, ibqp->qp_num);
if (err)
mlx5_ib_warn(dev, "failed detaching QPN 0x%x, MGID %pI6\n",
ibqp->qp_num, gid->raw);
return err;
}
static int init_node_data(struct mlx5_ib_dev *dev)
{
int err;
err = mlx5_query_node_desc(dev, dev->ib_dev.node_desc);
if (err)
return err;
return mlx5_query_node_guid(dev, &dev->ib_dev.node_guid);
}
static ssize_t show_fw_pages(struct device *device, struct device_attribute *attr,
char *buf)
{
struct mlx5_ib_dev *dev =
container_of(device, struct mlx5_ib_dev, ib_dev.dev);
return sprintf(buf, "%lld\n", (long long)dev->mdev->priv.fw_pages);
}
static ssize_t show_reg_pages(struct device *device,
struct device_attribute *attr, char *buf)
{
struct mlx5_ib_dev *dev =
container_of(device, struct mlx5_ib_dev, ib_dev.dev);
return sprintf(buf, "%d\n", atomic_read(&dev->mdev->priv.reg_pages));
}
static ssize_t show_hca(struct device *device, struct device_attribute *attr,
char *buf)
{
struct mlx5_ib_dev *dev =
container_of(device, struct mlx5_ib_dev, ib_dev.dev);
return sprintf(buf, "MT%d\n", dev->mdev->pdev->device);
}
static ssize_t show_rev(struct device *device, struct device_attribute *attr,
char *buf)
{
struct mlx5_ib_dev *dev =
container_of(device, struct mlx5_ib_dev, ib_dev.dev);
return sprintf(buf, "%x\n", dev->mdev->pdev->revision);
}
static ssize_t show_board(struct device *device, struct device_attribute *attr,
char *buf)
{
struct mlx5_ib_dev *dev =
container_of(device, struct mlx5_ib_dev, ib_dev.dev);
return sprintf(buf, "%.*s\n", MLX5_BOARD_ID_LEN,
dev->mdev->board_id);
}
static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
static DEVICE_ATTR(fw_pages, S_IRUGO, show_fw_pages, NULL);
static DEVICE_ATTR(reg_pages, S_IRUGO, show_reg_pages, NULL);
static struct device_attribute *mlx5_class_attributes[] = {
&dev_attr_hw_rev,
&dev_attr_hca_type,
&dev_attr_board_id,
&dev_attr_fw_pages,
&dev_attr_reg_pages,
};
static void pkey_change_handler(struct work_struct *work)
{
struct mlx5_ib_port_resources *ports =
container_of(work, struct mlx5_ib_port_resources,
pkey_change_work);
mutex_lock(&ports->devr->mutex);
mlx5_ib_gsi_pkey_change(ports->gsi);
mutex_unlock(&ports->devr->mutex);
}
static void mlx5_ib_handle_internal_error(struct mlx5_ib_dev *ibdev)
{
struct mlx5_ib_qp *mqp;
struct mlx5_ib_cq *send_mcq, *recv_mcq;
struct mlx5_core_cq *mcq;
struct list_head cq_armed_list;
unsigned long flags_qp;
unsigned long flags_cq;
unsigned long flags;
INIT_LIST_HEAD(&cq_armed_list);
spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags);
list_for_each_entry(mqp, &ibdev->qp_list, qps_list) {
spin_lock_irqsave(&mqp->sq.lock, flags_qp);
if (mqp->sq.tail != mqp->sq.head) {
send_mcq = to_mcq(mqp->ibqp.send_cq);
spin_lock_irqsave(&send_mcq->lock, flags_cq);
if (send_mcq->mcq.comp &&
mqp->ibqp.send_cq->comp_handler) {
if (!send_mcq->mcq.reset_notify_added) {
send_mcq->mcq.reset_notify_added = 1;
list_add_tail(&send_mcq->mcq.reset_notify,
&cq_armed_list);
}
}
spin_unlock_irqrestore(&send_mcq->lock, flags_cq);
}
spin_unlock_irqrestore(&mqp->sq.lock, flags_qp);
spin_lock_irqsave(&mqp->rq.lock, flags_qp);
if (!mqp->ibqp.srq) {
if (mqp->rq.tail != mqp->rq.head) {
recv_mcq = to_mcq(mqp->ibqp.recv_cq);
spin_lock_irqsave(&recv_mcq->lock, flags_cq);
if (recv_mcq->mcq.comp &&
mqp->ibqp.recv_cq->comp_handler) {
if (!recv_mcq->mcq.reset_notify_added) {
recv_mcq->mcq.reset_notify_added = 1;
list_add_tail(&recv_mcq->mcq.reset_notify,
&cq_armed_list);
}
}
spin_unlock_irqrestore(&recv_mcq->lock,
flags_cq);
}
}
spin_unlock_irqrestore(&mqp->rq.lock, flags_qp);
}
list_for_each_entry(mcq, &cq_armed_list, reset_notify) {
mcq->comp(mcq, NULL);
}
spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags);
}
static void mlx5_ib_event(struct mlx5_core_dev *dev, void *context,
enum mlx5_dev_event event, unsigned long param)
{
struct mlx5_ib_dev *ibdev = (struct mlx5_ib_dev *)context;
struct ib_event ibev;
bool fatal = false;
u8 port = (u8)param;
switch (event) {
case MLX5_DEV_EVENT_SYS_ERROR:
ibev.event = IB_EVENT_DEVICE_FATAL;
mlx5_ib_handle_internal_error(ibdev);
fatal = true;
break;
case MLX5_DEV_EVENT_PORT_UP:
case MLX5_DEV_EVENT_PORT_DOWN:
case MLX5_DEV_EVENT_PORT_INITIALIZED:
if (mlx5_ib_port_link_layer(&ibdev->ib_dev, port) ==
IB_LINK_LAYER_ETHERNET)
return;
ibev.event = (event == MLX5_DEV_EVENT_PORT_UP) ?
IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
break;
case MLX5_DEV_EVENT_LID_CHANGE:
ibev.event = IB_EVENT_LID_CHANGE;
break;
case MLX5_DEV_EVENT_PKEY_CHANGE:
ibev.event = IB_EVENT_PKEY_CHANGE;
schedule_work(&ibdev->devr.ports[port - 1].pkey_change_work);
break;
case MLX5_DEV_EVENT_GUID_CHANGE:
ibev.event = IB_EVENT_GID_CHANGE;
break;
case MLX5_DEV_EVENT_CLIENT_REREG:
ibev.event = IB_EVENT_CLIENT_REREGISTER;
break;
default:
return;
}
ibev.device = &ibdev->ib_dev;
ibev.element.port_num = port;
if (!rdma_is_port_valid(&ibdev->ib_dev, port)) {
mlx5_ib_warn(ibdev, "warning: event(%d) on port %d\n", event, port);
return;
}
if (ibdev->ib_active)
ib_dispatch_event(&ibev);
if (fatal)
ibdev->ib_active = false;
}
static void get_ext_port_caps(struct mlx5_ib_dev *dev)
{
int port;
for (port = 1; port <= MLX5_CAP_GEN(dev->mdev, num_ports); port++)
mlx5_query_ext_port_caps(dev, port);
}
static int get_port_caps(struct mlx5_ib_dev *dev)
{
struct ib_device_attr *dprops = NULL;
struct ib_port_attr *pprops = NULL;
int err = -ENOMEM;
int port;
struct ib_udata uhw = {.inlen = 0, .outlen = 0};
pprops = kmalloc(sizeof(*pprops), GFP_KERNEL);
if (!pprops)
goto out;
dprops = kmalloc(sizeof(*dprops), GFP_KERNEL);
if (!dprops)
goto out;
err = mlx5_ib_query_device(&dev->ib_dev, dprops, &uhw);
if (err) {
mlx5_ib_warn(dev, "query_device failed %d\n", err);
goto out;
}
for (port = 1; port <= MLX5_CAP_GEN(dev->mdev, num_ports); port++) {
err = mlx5_ib_query_port(&dev->ib_dev, port, pprops);
if (err) {
mlx5_ib_warn(dev, "query_port %d failed %d\n",
port, err);
break;
}
dev->mdev->port_caps[port - 1].pkey_table_len =
dprops->max_pkeys;
dev->mdev->port_caps[port - 1].gid_table_len =
pprops->gid_tbl_len;
mlx5_ib_dbg(dev, "pkey_table_len %d, gid_table_len %d\n",
dprops->max_pkeys, pprops->gid_tbl_len);
}
out:
kfree(pprops);
kfree(dprops);
return err;
}
static void destroy_umrc_res(struct mlx5_ib_dev *dev)
{
int err;
err = mlx5_mr_cache_cleanup(dev);
if (err)
mlx5_ib_warn(dev, "mr cache cleanup failed\n");
if (dev->umrc.qp)
mlx5_ib_destroy_qp(dev->umrc.qp, NULL);
if (dev->umrc.cq)
ib_free_cq(dev->umrc.cq);
if (dev->umrc.pd)
ib_dealloc_pd(dev->umrc.pd);
}
enum {
MAX_UMR_WR = 128,
};
static int create_umr_res(struct mlx5_ib_dev *dev)
{
struct ib_qp_init_attr *init_attr = NULL;
struct ib_qp_attr *attr = NULL;
struct ib_pd *pd;
struct ib_cq *cq;
struct ib_qp *qp;
int ret;
attr = kzalloc(sizeof(*attr), GFP_KERNEL);
init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
if (!attr || !init_attr) {
ret = -ENOMEM;
goto error_0;
}
pd = ib_alloc_pd(&dev->ib_dev, 0);
if (IS_ERR(pd)) {
mlx5_ib_dbg(dev, "Couldn't create PD for sync UMR QP\n");
ret = PTR_ERR(pd);
goto error_0;
}
cq = ib_alloc_cq(&dev->ib_dev, NULL, 128, 0, IB_POLL_SOFTIRQ);
if (IS_ERR(cq)) {
mlx5_ib_dbg(dev, "Couldn't create CQ for sync UMR QP\n");
ret = PTR_ERR(cq);
goto error_2;
}
init_attr->send_cq = cq;
init_attr->recv_cq = cq;
init_attr->sq_sig_type = IB_SIGNAL_ALL_WR;
init_attr->cap.max_send_wr = MAX_UMR_WR;
init_attr->cap.max_send_sge = 1;
init_attr->qp_type = MLX5_IB_QPT_REG_UMR;
init_attr->port_num = 1;
qp = mlx5_ib_create_qp(pd, init_attr, NULL);
if (IS_ERR(qp)) {
mlx5_ib_dbg(dev, "Couldn't create sync UMR QP\n");
ret = PTR_ERR(qp);
goto error_3;
}
qp->device = &dev->ib_dev;
qp->real_qp = qp;
qp->uobject = NULL;
qp->qp_type = MLX5_IB_QPT_REG_UMR;
attr->qp_state = IB_QPS_INIT;
attr->port_num = 1;
ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE | IB_QP_PKEY_INDEX |
IB_QP_PORT, NULL);
if (ret) {
mlx5_ib_dbg(dev, "Couldn't modify UMR QP\n");
goto error_4;
}
memset(attr, 0, sizeof(*attr));
attr->qp_state = IB_QPS_RTR;
attr->path_mtu = IB_MTU_256;
ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
if (ret) {
mlx5_ib_dbg(dev, "Couldn't modify umr QP to rtr\n");
goto error_4;
}
memset(attr, 0, sizeof(*attr));
attr->qp_state = IB_QPS_RTS;
ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
if (ret) {
mlx5_ib_dbg(dev, "Couldn't modify umr QP to rts\n");
goto error_4;
}
dev->umrc.qp = qp;
dev->umrc.cq = cq;
dev->umrc.pd = pd;
sema_init(&dev->umrc.sem, MAX_UMR_WR);
ret = mlx5_mr_cache_init(dev);
if (ret) {
mlx5_ib_warn(dev, "mr cache init failed %d\n", ret);
goto error_4;
}
kfree(attr);
kfree(init_attr);
return 0;
error_4:
mlx5_ib_destroy_qp(qp, NULL);
dev->umrc.qp = NULL;
error_3:
ib_free_cq(cq);
dev->umrc.cq = NULL;
error_2:
ib_dealloc_pd(pd);
dev->umrc.pd = NULL;
error_0:
kfree(attr);
kfree(init_attr);
return ret;
}
static int create_dev_resources(struct mlx5_ib_resources *devr)
{
struct ib_srq_init_attr attr;
struct mlx5_ib_dev *dev;
struct ib_device *ibdev;
struct ib_cq_init_attr cq_attr = {.cqe = 1};
int port;
int ret = 0;
dev = container_of(devr, struct mlx5_ib_dev, devr);
ibdev = &dev->ib_dev;
mutex_init(&devr->mutex);
devr->p0 = rdma_zalloc_drv_obj(ibdev, ib_pd);
if (!devr->p0)
return -ENOMEM;
devr->p0->device = ibdev;
devr->p0->uobject = NULL;
atomic_set(&devr->p0->usecnt, 0);
ret = mlx5_ib_alloc_pd(devr->p0, NULL);
if (ret)
goto error0;
devr->c0 = rdma_zalloc_drv_obj(ibdev, ib_cq);
if (!devr->c0) {
ret = -ENOMEM;
goto error1;
}
devr->c0->device = &dev->ib_dev;
atomic_set(&devr->c0->usecnt, 0);
ret = mlx5_ib_create_cq(devr->c0, &cq_attr, NULL);
if (ret)
goto err_create_cq;
devr->x0 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL);
if (IS_ERR(devr->x0)) {
ret = PTR_ERR(devr->x0);
goto error2;
}
devr->x0->device = &dev->ib_dev;
devr->x0->inode = NULL;
atomic_set(&devr->x0->usecnt, 0);
mutex_init(&devr->x0->tgt_qp_mutex);
INIT_LIST_HEAD(&devr->x0->tgt_qp_list);
devr->x1 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL);
if (IS_ERR(devr->x1)) {
ret = PTR_ERR(devr->x1);
goto error3;
}
devr->x1->device = &dev->ib_dev;
devr->x1->inode = NULL;
atomic_set(&devr->x1->usecnt, 0);
mutex_init(&devr->x1->tgt_qp_mutex);
INIT_LIST_HEAD(&devr->x1->tgt_qp_list);
memset(&attr, 0, sizeof(attr));
attr.attr.max_sge = 1;
attr.attr.max_wr = 1;
attr.srq_type = IB_SRQT_XRC;
attr.ext.cq = devr->c0;
attr.ext.xrc.xrcd = devr->x0;
devr->s0 = rdma_zalloc_drv_obj(ibdev, ib_srq);
if (!devr->s0) {
ret = -ENOMEM;
goto error4;
}
devr->s0->device = &dev->ib_dev;
devr->s0->pd = devr->p0;
devr->s0->srq_type = IB_SRQT_XRC;
devr->s0->ext.xrc.xrcd = devr->x0;
devr->s0->ext.cq = devr->c0;
ret = mlx5_ib_create_srq(devr->s0, &attr, NULL);
if (ret)
goto err_create;
atomic_inc(&devr->s0->ext.xrc.xrcd->usecnt);
atomic_inc(&devr->s0->ext.cq->usecnt);
atomic_inc(&devr->p0->usecnt);
atomic_set(&devr->s0->usecnt, 0);
memset(&attr, 0, sizeof(attr));
attr.attr.max_sge = 1;
attr.attr.max_wr = 1;
attr.srq_type = IB_SRQT_BASIC;
devr->s1 = rdma_zalloc_drv_obj(ibdev, ib_srq);
if (!devr->s1) {
ret = -ENOMEM;
goto error5;
}
devr->s1->device = &dev->ib_dev;
devr->s1->pd = devr->p0;
devr->s1->srq_type = IB_SRQT_BASIC;
devr->s1->ext.cq = devr->c0;
ret = mlx5_ib_create_srq(devr->s1, &attr, NULL);
if (ret)
goto error6;
atomic_inc(&devr->p0->usecnt);
atomic_set(&devr->s1->usecnt, 0);
for (port = 0; port < ARRAY_SIZE(devr->ports); ++port) {
INIT_WORK(&devr->ports[port].pkey_change_work,
pkey_change_handler);
devr->ports[port].devr = devr;
}
return 0;
error6:
kfree(devr->s1);
error5:
mlx5_ib_destroy_srq(devr->s0, NULL);
err_create:
kfree(devr->s0);
error4:
mlx5_ib_dealloc_xrcd(devr->x1, NULL);
error3:
mlx5_ib_dealloc_xrcd(devr->x0, NULL);
error2:
mlx5_ib_destroy_cq(devr->c0, NULL);
err_create_cq:
kfree(devr->c0);
error1:
mlx5_ib_dealloc_pd(devr->p0, NULL);
error0:
kfree(devr->p0);
return ret;
}
static void destroy_dev_resources(struct mlx5_ib_resources *devr)
{
int port;
mlx5_ib_destroy_srq(devr->s1, NULL);
kfree(devr->s1);
mlx5_ib_destroy_srq(devr->s0, NULL);
kfree(devr->s0);
mlx5_ib_dealloc_xrcd(devr->x0, NULL);
mlx5_ib_dealloc_xrcd(devr->x1, NULL);
mlx5_ib_destroy_cq(devr->c0, NULL);
kfree(devr->c0);
mlx5_ib_dealloc_pd(devr->p0, NULL);
kfree(devr->p0);
for (port = 0; port < ARRAY_SIZE(devr->ports); ++port)
cancel_work_sync(&devr->ports[port].pkey_change_work);
}
static u32 get_core_cap_flags(struct ib_device *ibdev)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
enum rdma_link_layer ll = mlx5_ib_port_link_layer(ibdev, 1);
u8 l3_type_cap = MLX5_CAP_ROCE(dev->mdev, l3_type);
u8 roce_version_cap = MLX5_CAP_ROCE(dev->mdev, roce_version);
u32 ret = 0;
if (ll == IB_LINK_LAYER_INFINIBAND)
return RDMA_CORE_PORT_IBA_IB;
if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV4_CAP))
return 0;
if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV6_CAP))
return 0;
if (roce_version_cap & MLX5_ROCE_VERSION_1_CAP)
ret |= RDMA_CORE_PORT_IBA_ROCE;
if (roce_version_cap & MLX5_ROCE_VERSION_2_CAP)
ret |= RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
return ret;
}
static int mlx5_port_immutable(struct ib_device *ibdev, u8 port_num,
struct ib_port_immutable *immutable)
{
struct ib_port_attr attr;
struct mlx5_ib_dev *dev = to_mdev(ibdev);
enum rdma_link_layer ll = mlx5_ib_port_link_layer(ibdev, port_num);
int err;
err = mlx5_ib_query_port(ibdev, port_num, &attr);
if (err)
return err;
immutable->pkey_tbl_len = attr.pkey_tbl_len;
immutable->gid_tbl_len = attr.gid_tbl_len;
immutable->core_cap_flags = get_core_cap_flags(ibdev);
if ((ll == IB_LINK_LAYER_INFINIBAND) || MLX5_CAP_GEN(dev->mdev, roce))
immutable->max_mad_size = IB_MGMT_MAD_SIZE;
return 0;
}
static void get_dev_fw_str(struct ib_device *ibdev, char *str,
size_t str_len)
{
struct mlx5_ib_dev *dev =
container_of(ibdev, struct mlx5_ib_dev, ib_dev);
snprintf(str, str_len, "%d.%d.%04d", fw_rev_maj(dev->mdev),
fw_rev_min(dev->mdev), fw_rev_sub(dev->mdev));
}
static int mlx5_roce_lag_init(struct mlx5_ib_dev *dev)
{
return 0;
}
static void mlx5_roce_lag_cleanup(struct mlx5_ib_dev *dev)
{
}
static void mlx5_remove_roce_notifier(struct mlx5_ib_dev *dev)
{
if (dev->roce.nb.notifier_call) {
unregister_netdevice_notifier(&dev->roce.nb);
dev->roce.nb.notifier_call = NULL;
}
}
static int
mlx5_enable_roce_if_cb(if_t ifp, void *arg)
{
struct mlx5_ib_dev *dev = arg;
if (!mlx5_netdev_match(ifp, dev->mdev, "mce"))
return (0);
write_lock(&dev->roce.netdev_lock);
dev->roce.netdev = ifp;
write_unlock(&dev->roce.netdev_lock);
return (0);
}
static int mlx5_enable_roce(struct mlx5_ib_dev *dev)
{
struct epoch_tracker et;
VNET_ITERATOR_DECL(vnet_iter);
int err;
VNET_LIST_RLOCK();
NET_EPOCH_ENTER(et);
VNET_FOREACH(vnet_iter) {
CURVNET_SET_QUIET(vnet_iter);
if_foreach(mlx5_enable_roce_if_cb, dev);
CURVNET_RESTORE();
}
NET_EPOCH_EXIT(et);
VNET_LIST_RUNLOCK();
dev->roce.nb.notifier_call = mlx5_netdev_event;
err = register_netdevice_notifier(&dev->roce.nb);
if (err) {
dev->roce.nb.notifier_call = NULL;
return err;
}
if (MLX5_CAP_GEN(dev->mdev, roce)) {
err = mlx5_nic_vport_enable_roce(dev->mdev);
if (err)
goto err_unregister_netdevice_notifier;
}
err = mlx5_roce_lag_init(dev);
if (err)
goto err_disable_roce;
return 0;
err_disable_roce:
if (MLX5_CAP_GEN(dev->mdev, roce))
mlx5_nic_vport_disable_roce(dev->mdev);
err_unregister_netdevice_notifier:
mlx5_remove_roce_notifier(dev);
return err;
}
static void mlx5_disable_roce(struct mlx5_ib_dev *dev)
{
mlx5_roce_lag_cleanup(dev);
if (MLX5_CAP_GEN(dev->mdev, roce))
mlx5_nic_vport_disable_roce(dev->mdev);
}
static void mlx5_ib_dealloc_q_port_counter(struct mlx5_ib_dev *dev, u8 port_num)
{
mlx5_vport_dealloc_q_counter(dev->mdev,
MLX5_INTERFACE_PROTOCOL_IB,
dev->port[port_num].q_cnt_id);
dev->port[port_num].q_cnt_id = 0;
}
static void mlx5_ib_dealloc_q_counters(struct mlx5_ib_dev *dev)
{
unsigned int i;
for (i = 0; i < dev->num_ports; i++)
mlx5_ib_dealloc_q_port_counter(dev, i);
}
static int mlx5_ib_alloc_q_counters(struct mlx5_ib_dev *dev)
{
int i;
int ret;
for (i = 0; i < dev->num_ports; i++) {
ret = mlx5_vport_alloc_q_counter(dev->mdev,
MLX5_INTERFACE_PROTOCOL_IB,
&dev->port[i].q_cnt_id);
if (ret) {
mlx5_ib_warn(dev,
"couldn't allocate queue counter for port %d, err %d\n",
i + 1, ret);
goto dealloc_counters;
}
}
return 0;
dealloc_counters:
while (--i >= 0)
mlx5_ib_dealloc_q_port_counter(dev, i);
return ret;
}
static const char * const names[] = {
"rx_write_requests",
"rx_read_requests",
"rx_atomic_requests",
"out_of_buffer",
"out_of_sequence",
"duplicate_request",
"rnr_nak_retry_err",
"packet_seq_err",
"implied_nak_seq_err",
"local_ack_timeout_err",
};
static const size_t stats_offsets[] = {
MLX5_BYTE_OFF(query_q_counter_out, rx_write_requests),
MLX5_BYTE_OFF(query_q_counter_out, rx_read_requests),
MLX5_BYTE_OFF(query_q_counter_out, rx_atomic_requests),
MLX5_BYTE_OFF(query_q_counter_out, out_of_buffer),
MLX5_BYTE_OFF(query_q_counter_out, out_of_sequence),
MLX5_BYTE_OFF(query_q_counter_out, duplicate_request),
MLX5_BYTE_OFF(query_q_counter_out, rnr_nak_retry_err),
MLX5_BYTE_OFF(query_q_counter_out, packet_seq_err),
MLX5_BYTE_OFF(query_q_counter_out, implied_nak_seq_err),
MLX5_BYTE_OFF(query_q_counter_out, local_ack_timeout_err),
};
static struct rdma_hw_stats *mlx5_ib_alloc_hw_stats(struct ib_device *ibdev,
u8 port_num)
{
BUILD_BUG_ON(ARRAY_SIZE(names) != ARRAY_SIZE(stats_offsets));
if (port_num == 0)
return NULL;
return rdma_alloc_hw_stats_struct(names, ARRAY_SIZE(names),
RDMA_HW_STATS_DEFAULT_LIFESPAN);
}
static int mlx5_ib_get_hw_stats(struct ib_device *ibdev,
struct rdma_hw_stats *stats,
u8 port, int index)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
int outlen = MLX5_ST_SZ_BYTES(query_q_counter_out);
void *out;
__be32 val;
int ret;
int i;
if (!port || !stats)
return -ENOSYS;
out = mlx5_vzalloc(outlen);
if (!out)
return -ENOMEM;
ret = mlx5_vport_query_q_counter(dev->mdev,
dev->port[port - 1].q_cnt_id, 0,
out, outlen);
if (ret)
goto free;
for (i = 0; i < ARRAY_SIZE(names); i++) {
val = *(__be32 *)(out + stats_offsets[i]);
stats->value[i] = (u64)be32_to_cpu(val);
}
free:
kvfree(out);
return ARRAY_SIZE(names);
}
static int mlx5_ib_stage_bfreg_init(struct mlx5_ib_dev *dev)
{
int err;
err = mlx5_alloc_bfreg(dev->mdev, &dev->bfreg, false, false);
if (err)
return err;
err = mlx5_alloc_bfreg(dev->mdev, &dev->fp_bfreg, false, true);
if (err) {
mlx5_free_bfreg(dev->mdev, &dev->bfreg);
return err;
}
err = mlx5_alloc_bfreg(dev->mdev, &dev->wc_bfreg, true, false);
if (err) {
mlx5_free_bfreg(dev->mdev, &dev->fp_bfreg);
mlx5_free_bfreg(dev->mdev, &dev->bfreg);
}
return err;
}
static void mlx5_ib_stage_bfreg_cleanup(struct mlx5_ib_dev *dev)
{
mlx5_free_bfreg(dev->mdev, &dev->wc_bfreg);
mlx5_free_bfreg(dev->mdev, &dev->fp_bfreg);
mlx5_free_bfreg(dev->mdev, &dev->bfreg);
}
static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
{
struct mlx5_ib_dev *dev;
enum rdma_link_layer ll;
int port_type_cap;
int err;
int i;
port_type_cap = MLX5_CAP_GEN(mdev, port_type);
ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap);
dev = (struct mlx5_ib_dev *)ib_alloc_device(sizeof(*dev));
if (!dev)
return NULL;
dev->mdev = mdev;
dev->port = kcalloc(MLX5_CAP_GEN(mdev, num_ports), sizeof(*dev->port),
GFP_KERNEL);
if (!dev->port)
goto err_dealloc;
rwlock_init(&dev->roce.netdev_lock);
err = get_port_caps(dev);
if (err)
goto err_free_port;
if (mlx5_use_mad_ifc(dev))
get_ext_port_caps(dev);
MLX5_INIT_DOORBELL_LOCK(&dev->uar_lock);
mutex_init(&dev->lb_mutex);
INIT_IB_DEVICE_OPS(&dev->ib_dev.ops, mlx5, MLX5);
snprintf(dev->ib_dev.name, IB_DEVICE_NAME_MAX, "mlx5_%d", device_get_unit(mdev->pdev->dev.bsddev));
dev->ib_dev.owner = THIS_MODULE;
dev->ib_dev.node_type = RDMA_NODE_IB_CA;
dev->ib_dev.local_dma_lkey = 0 ;
dev->num_ports = MLX5_CAP_GEN(mdev, num_ports);
dev->ib_dev.phys_port_cnt = dev->num_ports;
dev->ib_dev.num_comp_vectors =
dev->mdev->priv.eq_table.num_comp_vectors;
dev->ib_dev.dma_device = &mdev->pdev->dev;
dev->ib_dev.uverbs_abi_ver = MLX5_IB_UVERBS_ABI_VERSION;
dev->ib_dev.uverbs_cmd_mask =
(1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
(1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
(1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
(1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
(1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
(1ull << IB_USER_VERBS_CMD_CREATE_AH) |
(1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
(1ull << IB_USER_VERBS_CMD_REG_MR) |
(1ull << IB_USER_VERBS_CMD_REREG_MR) |
(1ull << IB_USER_VERBS_CMD_DEREG_MR) |
(1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
(1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
(1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
(1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
(1ull << IB_USER_VERBS_CMD_CREATE_QP) |
(1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
(1ull << IB_USER_VERBS_CMD_QUERY_QP) |
(1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
(1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
(1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
(1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
(1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
(1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
(1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
(1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) |
(1ull << IB_USER_VERBS_CMD_OPEN_QP);
dev->ib_dev.uverbs_ex_cmd_mask =
(1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) |
(1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) |
(1ull << IB_USER_VERBS_EX_CMD_CREATE_QP);
dev->ib_dev.query_device = mlx5_ib_query_device;
dev->ib_dev.query_port = mlx5_ib_query_port;
dev->ib_dev.get_link_layer = mlx5_ib_port_link_layer;
if (ll == IB_LINK_LAYER_ETHERNET)
dev->ib_dev.get_netdev = mlx5_ib_get_netdev;
dev->ib_dev.query_gid = mlx5_ib_query_gid;
dev->ib_dev.add_gid = mlx5_ib_add_gid;
dev->ib_dev.del_gid = mlx5_ib_del_gid;
dev->ib_dev.query_pkey = mlx5_ib_query_pkey;
dev->ib_dev.modify_device = mlx5_ib_modify_device;
dev->ib_dev.modify_port = mlx5_ib_modify_port;
dev->ib_dev.alloc_ucontext = mlx5_ib_alloc_ucontext;
dev->ib_dev.dealloc_ucontext = mlx5_ib_dealloc_ucontext;
dev->ib_dev.mmap = mlx5_ib_mmap;
dev->ib_dev.mmap_free = mlx5_ib_mmap_free;
dev->ib_dev.alloc_pd = mlx5_ib_alloc_pd;
dev->ib_dev.dealloc_pd = mlx5_ib_dealloc_pd;
dev->ib_dev.create_ah = mlx5_ib_create_ah;
dev->ib_dev.query_ah = mlx5_ib_query_ah;
dev->ib_dev.destroy_ah = mlx5_ib_destroy_ah;
dev->ib_dev.create_srq = mlx5_ib_create_srq;
dev->ib_dev.modify_srq = mlx5_ib_modify_srq;
dev->ib_dev.query_srq = mlx5_ib_query_srq;
dev->ib_dev.destroy_srq = mlx5_ib_destroy_srq;
dev->ib_dev.post_srq_recv = mlx5_ib_post_srq_recv;
dev->ib_dev.create_qp = mlx5_ib_create_qp;
dev->ib_dev.modify_qp = mlx5_ib_modify_qp;
dev->ib_dev.query_qp = mlx5_ib_query_qp;
dev->ib_dev.destroy_qp = mlx5_ib_destroy_qp;
dev->ib_dev.post_send = mlx5_ib_post_send;
dev->ib_dev.post_recv = mlx5_ib_post_recv;
dev->ib_dev.create_cq = mlx5_ib_create_cq;
dev->ib_dev.modify_cq = mlx5_ib_modify_cq;
dev->ib_dev.resize_cq = mlx5_ib_resize_cq;
dev->ib_dev.destroy_cq = mlx5_ib_destroy_cq;
dev->ib_dev.poll_cq = mlx5_ib_poll_cq;
dev->ib_dev.req_notify_cq = mlx5_ib_arm_cq;
dev->ib_dev.get_dma_mr = mlx5_ib_get_dma_mr;
dev->ib_dev.reg_user_mr = mlx5_ib_reg_user_mr;
dev->ib_dev.rereg_user_mr = mlx5_ib_rereg_user_mr;
dev->ib_dev.dereg_mr = mlx5_ib_dereg_mr;
dev->ib_dev.attach_mcast = mlx5_ib_mcg_attach;
dev->ib_dev.detach_mcast = mlx5_ib_mcg_detach;
dev->ib_dev.process_mad = mlx5_ib_process_mad;
dev->ib_dev.alloc_mr = mlx5_ib_alloc_mr;
dev->ib_dev.map_mr_sg = mlx5_ib_map_mr_sg;
dev->ib_dev.check_mr_status = mlx5_ib_check_mr_status;
dev->ib_dev.get_port_immutable = mlx5_port_immutable;
dev->ib_dev.get_dev_fw_str = get_dev_fw_str;
if (mlx5_core_is_pf(mdev)) {
dev->ib_dev.get_vf_config = mlx5_ib_get_vf_config;
dev->ib_dev.set_vf_link_state = mlx5_ib_set_vf_link_state;
dev->ib_dev.get_vf_stats = mlx5_ib_get_vf_stats;
dev->ib_dev.set_vf_guid = mlx5_ib_set_vf_guid;
}
dev->ib_dev.disassociate_ucontext = mlx5_ib_disassociate_ucontext;
mlx5_ib_internal_fill_odp_caps(dev);
if (MLX5_CAP_GEN(mdev, imaicl)) {
dev->ib_dev.alloc_mw = mlx5_ib_alloc_mw;
dev->ib_dev.dealloc_mw = mlx5_ib_dealloc_mw;
dev->ib_dev.uverbs_cmd_mask |=
(1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
(1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
}
if (MLX5_CAP_GEN(dev->mdev, out_of_seq_cnt) &&
MLX5_CAP_GEN(dev->mdev, retransmission_q_counters)) {
dev->ib_dev.get_hw_stats = mlx5_ib_get_hw_stats;
dev->ib_dev.alloc_hw_stats = mlx5_ib_alloc_hw_stats;
}
if (MLX5_CAP_GEN(mdev, xrc)) {
dev->ib_dev.alloc_xrcd = mlx5_ib_alloc_xrcd;
dev->ib_dev.dealloc_xrcd = mlx5_ib_dealloc_xrcd;
dev->ib_dev.uverbs_cmd_mask |=
(1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
(1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
}
if (mlx5_ib_port_link_layer(&dev->ib_dev, 1) ==
IB_LINK_LAYER_ETHERNET) {
dev->ib_dev.create_flow = mlx5_ib_create_flow;
dev->ib_dev.destroy_flow = mlx5_ib_destroy_flow;
dev->ib_dev.create_wq = mlx5_ib_create_wq;
dev->ib_dev.modify_wq = mlx5_ib_modify_wq;
dev->ib_dev.destroy_wq = mlx5_ib_destroy_wq;
dev->ib_dev.create_rwq_ind_table = mlx5_ib_create_rwq_ind_table;
dev->ib_dev.destroy_rwq_ind_table = mlx5_ib_destroy_rwq_ind_table;
dev->ib_dev.uverbs_ex_cmd_mask |=
(1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
(1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW) |
(1ull << IB_USER_VERBS_EX_CMD_CREATE_WQ) |
(1ull << IB_USER_VERBS_EX_CMD_MODIFY_WQ) |
(1ull << IB_USER_VERBS_EX_CMD_DESTROY_WQ) |
(1ull << IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL) |
(1ull << IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL);
}
err = init_node_data(dev);
if (err)
goto err_free_port;
mutex_init(&dev->flow_db.lock);
mutex_init(&dev->cap_mask_mutex);
INIT_LIST_HEAD(&dev->qp_list);
spin_lock_init(&dev->reset_flow_resource_lock);
if (ll == IB_LINK_LAYER_ETHERNET) {
err = mlx5_enable_roce(dev);
if (err)
goto err_free_port;
}
err = create_dev_resources(&dev->devr);
if (err)
goto err_disable_roce;
err = mlx5_ib_odp_init_one(dev);
if (err)
goto err_rsrc;
err = mlx5_ib_alloc_q_counters(dev);
if (err)
goto err_odp;
err = mlx5_ib_stage_bfreg_init(dev);
if (err)
goto err_q_cnt;
err = ib_register_device(&dev->ib_dev, NULL);
if (err)
goto err_bfreg;
err = create_umr_res(dev);
if (err)
goto err_dev;
for (i = 0; i < ARRAY_SIZE(mlx5_class_attributes); i++) {
err = device_create_file(&dev->ib_dev.dev,
mlx5_class_attributes[i]);
if (err)
goto err_umrc;
}
err = mlx5_ib_init_congestion(dev);
if (err)
goto err_umrc;
dev->ib_active = true;
return dev;
err_umrc:
destroy_umrc_res(dev);
err_dev:
ib_unregister_device(&dev->ib_dev);
err_bfreg:
mlx5_ib_stage_bfreg_cleanup(dev);
err_q_cnt:
mlx5_ib_dealloc_q_counters(dev);
err_odp:
mlx5_ib_odp_remove_one(dev);
err_rsrc:
destroy_dev_resources(&dev->devr);
err_disable_roce:
if (ll == IB_LINK_LAYER_ETHERNET) {
mlx5_disable_roce(dev);
mlx5_remove_roce_notifier(dev);
}
err_free_port:
kfree(dev->port);
err_dealloc:
ib_dealloc_device((struct ib_device *)dev);
return NULL;
}
static void mlx5_ib_remove(struct mlx5_core_dev *mdev, void *context)
{
struct mlx5_ib_dev *dev = context;
enum rdma_link_layer ll = mlx5_ib_port_link_layer(&dev->ib_dev, 1);
mlx5_ib_cleanup_congestion(dev);
mlx5_remove_roce_notifier(dev);
ib_unregister_device(&dev->ib_dev);
mlx5_ib_stage_bfreg_cleanup(dev);
mlx5_ib_dealloc_q_counters(dev);
destroy_umrc_res(dev);
mlx5_ib_odp_remove_one(dev);
destroy_dev_resources(&dev->devr);
if (ll == IB_LINK_LAYER_ETHERNET)
mlx5_disable_roce(dev);
kfree(dev->port);
ib_dealloc_device(&dev->ib_dev);
}
static struct mlx5_interface mlx5_ib_interface = {
.add = mlx5_ib_add,
.remove = mlx5_ib_remove,
.event = mlx5_ib_event,
.protocol = MLX5_INTERFACE_PROTOCOL_IB,
};
static int __init mlx5_ib_init(void)
{
int err;
err = mlx5_ib_odp_init();
if (err)
return err;
err = mlx5_register_interface(&mlx5_ib_interface);
if (err)
goto clean_odp;
return err;
clean_odp:
mlx5_ib_odp_cleanup();
return err;
}
static void __exit mlx5_ib_cleanup(void)
{
mlx5_unregister_interface(&mlx5_ib_interface);
mlx5_ib_odp_cleanup();
}
module_init_order(mlx5_ib_init, SI_ORDER_SEVENTH);
module_exit_order(mlx5_ib_cleanup, SI_ORDER_SEVENTH);
