ucs_status_t uct_ud_mlx5_iface_get_av(uct_ib_iface_t *iface,
uct_ud_mlx5_iface_common_t *ud_common_iface,
const uct_ib_address_t *ib_addr,
uint8_t path_bits,
uct_ib_mlx5_base_av_t *base_av,
struct mlx5_grh_av *grh_av,
int *is_global)
{
ucs_status_t status;
struct ibv_ah *ah;
struct mlx5_wqe_av mlx5_av;
status = uct_ib_iface_create_ah(iface, ib_addr, path_bits, &ah, is_global);
if (status != UCS_OK) {
return UCS_ERR_INVALID_ADDR;
}
uct_ib_mlx5_get_av(ah, &mlx5_av);
ibv_destroy_ah(ah);
base_av->stat_rate_sl = mlx5_av_base(&mlx5_av)->stat_rate_sl;
base_av->fl_mlid = mlx5_av_base(&mlx5_av)->fl_mlid;
base_av->rlid = mlx5_av_base(&mlx5_av)->rlid;
/* copy MLX5_EXTENDED_UD_AV from the driver, if the flag is not present then
* the device supports compact address vector.
*/
if (ud_common_iface->config.compact_av) {
base_av->dqp_dct = mlx5_av_base(&mlx5_av)->dqp_dct & UCT_IB_MLX5_EXTENDED_UD_AV;
} else {
base_av->dqp_dct = UCT_IB_MLX5_EXTENDED_UD_AV;
}
ucs_assertv_always((UCT_IB_MLX5_AV_FULL_SIZE > UCT_IB_MLX5_AV_BASE_SIZE) ||
(base_av->dqp_dct & UCT_IB_MLX5_EXTENDED_UD_AV),
"compact address vector not supported, and EXTENDED_AV flag is missing");
if (*is_global) {
ucs_assert_always(grh_av != NULL);
memcpy(grh_av, mlx5_av_grh(&mlx5_av), sizeof(*grh_av));
}
return UCS_OK;
}
static ucs_status_t
uct_ud_mlx5_ep_create_ah(uct_ud_mlx5_iface_t *iface, uct_ud_mlx5_ep_t *ep,
const uct_sockaddr_ib_t *if_addr)
{
struct ibv_ah *ah;
ah = uct_ib_create_ah(&iface->super.super, if_addr->lid);
if (ah == NULL) {
ucs_error("failed to create address handle: %m");
return UCS_ERR_INVALID_ADDR;
}
uct_ib_mlx5_get_av(ah, &ep->av);
mlx5_av_base(&ep->av)->key.qkey.qkey = htonl(UCT_IB_QKEY);
mlx5_av_base(&ep->av)->key.qkey.reserved = iface->super.qp->qp_num;
mlx5_av_base(&ep->av)->dqp_dct = htonl(if_addr->qp_num |
UCT_IB_MLX5_EXTENDED_UD_AV);
ibv_destroy_ah(ah);
return UCS_OK;
}
ucs_status_t uct_dc_mlx5_ep_fc_ctrl(uct_ep_t *tl_ep, unsigned op,
uct_rc_fc_request_t *req)
{
uct_dc_mlx5_ep_t *dc_ep = ucs_derived_of(tl_ep, uct_dc_mlx5_ep_t);
uct_dc_mlx5_iface_t *iface = ucs_derived_of(tl_ep->iface,
uct_dc_mlx5_iface_t);
uct_ib_iface_t *ib_iface = &iface->super.super.super;
struct ibv_ah_attr ah_attr = {.is_global = 0};
uct_dc_fc_sender_data_t sender;
uct_dc_fc_request_t *dc_req;
struct mlx5_wqe_av mlx5_av;
uct_ib_mlx5_base_av_t av;
ucs_status_t status;
uintptr_t sender_ep;
struct ibv_ah *ah;
UCT_DC_MLX5_TXQP_DECL(txqp, txwq);
ucs_assert((sizeof(uint8_t) + sizeof(sender_ep)) <=
UCT_IB_MLX5_AV_FULL_SIZE);
UCT_DC_MLX5_CHECK_RES(iface, dc_ep);
UCT_DC_MLX5_IFACE_TXQP_GET(iface, dc_ep, txqp, txwq);
dc_req = ucs_derived_of(req, uct_dc_fc_request_t);
if (op == UCT_RC_EP_FC_PURE_GRANT) {
ucs_assert(req != NULL);
sender_ep = (uintptr_t)dc_req->sender.ep;
/* TODO: look at common code with uct_ud_mlx5_iface_get_av */
if (dc_req->sender.global.is_global) {
uct_ib_iface_fill_ah_attr_from_gid_lid(ib_iface, dc_req->lid,
ucs_unaligned_ptr(&dc_req->sender.global.gid),
ib_iface->path_bits[0], &ah_attr);
status = uct_ib_iface_create_ah(ib_iface, &ah_attr, &ah);
if (status != UCS_OK) {
return status;
}
uct_ib_mlx5_get_av(ah, &mlx5_av);
}
/* Note av initialization is copied from exp verbs */
av.stat_rate_sl = ib_iface->config.sl; /* (attr->static_rate << 4) | attr->sl */
av.fl_mlid = ib_iface->path_bits[0] & 0x7f;
/* lid in dc_req is in BE already */
av.rlid = uct_ib_iface_is_roce(ib_iface) ? 0 :
(dc_req->lid | htons(ib_iface->path_bits[0]));
av.dqp_dct = htonl(dc_req->dct_num);
uct_dc_mlx5_iface_set_av_sport(iface, &av, dc_req->dct_num);
if (!iface->ud_common.config.compact_av || ah_attr.is_global) {
av.dqp_dct |= UCT_IB_MLX5_EXTENDED_UD_AV;
}
uct_rc_mlx5_txqp_inline_post(&iface->super, UCT_IB_QPT_DCI,
txqp, txwq, MLX5_OPCODE_SEND,
&av /*dummy*/, 0, op, sender_ep, 0,
0, 0,
&av, ah_attr.is_global ? mlx5_av_grh(&mlx5_av) : NULL,
uct_ib_mlx5_wqe_av_size(&av), 0, INT_MAX);
} else {
ucs_assert(op == UCT_RC_EP_FC_FLAG_HARD_REQ);
sender.ep = (uint64_t)dc_ep;
sender.global.gid = ib_iface->gid;
sender.global.is_global = dc_ep->flags & UCT_DC_MLX5_EP_FLAG_GRH;
UCS_STATS_UPDATE_COUNTER(dc_ep->fc.stats,
UCT_RC_FC_STAT_TX_HARD_REQ, 1);
uct_rc_mlx5_txqp_inline_post(&iface->super, UCT_IB_QPT_DCI,
txqp, txwq, MLX5_OPCODE_SEND_IMM,
&sender.global, sizeof(sender.global), op, sender.ep,
uct_dc_mlx5_get_dct_num(iface),
0, 0,
&dc_ep->av,
uct_dc_mlx5_ep_get_grh(dc_ep),
uct_ib_mlx5_wqe_av_size(&dc_ep->av),
MLX5_WQE_CTRL_SOLICITED, INT_MAX);
}
return UCS_OK;
}
UCS_CLASS_INIT_FUNC(uct_dc_mlx5_ep_t, uct_dc_mlx5_iface_t *iface, const uct_dc_mlx5_iface_addr_t *if_addr,
uct_ib_mlx5_base_av_t *av)
{
uint32_t remote_dctn;
ucs_trace_func("");
UCS_CLASS_CALL_SUPER_INIT(uct_base_ep_t, &iface->super.super.super.super);
self->atomic_mr_offset = uct_ib_md_atomic_offset(if_addr->atomic_mr_id);
remote_dctn = uct_ib_unpack_uint24(if_addr->qp_num);
memcpy(&self->av, av, sizeof(*av));
self->av.dqp_dct |= htonl(remote_dctn);
uct_dc_mlx5_iface_set_av_sport(iface, &self->av, remote_dctn);
return uct_dc_mlx5_ep_basic_init(iface, self);
}
