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path: root/drivers/infiniband/hw/mlx5/qp.c
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Diffstat (limited to 'drivers/infiniband/hw/mlx5/qp.c')
-rw-r--r--drivers/infiniband/hw/mlx5/qp.c172
1 files changed, 137 insertions, 35 deletions
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index 0889ff367c86..acb79d3a4f1d 100644
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -34,6 +34,7 @@
#include <rdma/ib_umem.h>
#include <rdma/ib_cache.h>
#include <rdma/ib_user_verbs.h>
+#include <linux/mlx5/fs.h>
#include "mlx5_ib.h"
/* not supported currently */
@@ -453,7 +454,8 @@ static int set_user_buf_size(struct mlx5_ib_dev *dev,
return -EINVAL;
}
- if (attr->qp_type == IB_QPT_RAW_PACKET) {
+ if (attr->qp_type == IB_QPT_RAW_PACKET ||
+ qp->flags & MLX5_IB_QP_UNDERLAY) {
base->ubuffer.buf_size = qp->rq.wqe_cnt << qp->rq.wqe_shift;
qp->raw_packet_qp.sq.ubuffer.buf_size = qp->sq.wqe_cnt << 6;
} else {
@@ -675,10 +677,14 @@ err_umem:
return err;
}
-static void destroy_user_rq(struct ib_pd *pd, struct mlx5_ib_rwq *rwq)
+static void destroy_user_rq(struct mlx5_ib_dev *dev, struct ib_pd *pd,
+ struct mlx5_ib_rwq *rwq)
{
struct mlx5_ib_ucontext *context;
+ if (rwq->create_flags & MLX5_IB_WQ_FLAGS_DELAY_DROP)
+ atomic_dec(&dev->delay_drop.rqs_cnt);
+
context = to_mucontext(pd->uobject->context);
mlx5_ib_db_unmap_user(context, &rwq->db);
if (rwq->umem)
@@ -959,11 +965,16 @@ static int create_kernel_qp(struct mlx5_ib_dev *dev,
goto err_free;
}
- qp->sq.wrid = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wrid), GFP_KERNEL);
- qp->sq.wr_data = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wr_data), GFP_KERNEL);
- qp->rq.wrid = kmalloc(qp->rq.wqe_cnt * sizeof(*qp->rq.wrid), GFP_KERNEL);
- qp->sq.w_list = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.w_list), GFP_KERNEL);
- qp->sq.wqe_head = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wqe_head), GFP_KERNEL);
+ qp->sq.wrid = kvmalloc_array(qp->sq.wqe_cnt,
+ sizeof(*qp->sq.wrid), GFP_KERNEL);
+ qp->sq.wr_data = kvmalloc_array(qp->sq.wqe_cnt,
+ sizeof(*qp->sq.wr_data), GFP_KERNEL);
+ qp->rq.wrid = kvmalloc_array(qp->rq.wqe_cnt,
+ sizeof(*qp->rq.wrid), GFP_KERNEL);
+ qp->sq.w_list = kvmalloc_array(qp->sq.wqe_cnt,
+ sizeof(*qp->sq.w_list), GFP_KERNEL);
+ qp->sq.wqe_head = kvmalloc_array(qp->sq.wqe_cnt,
+ sizeof(*qp->sq.wqe_head), GFP_KERNEL);
if (!qp->sq.wrid || !qp->sq.wr_data || !qp->rq.wrid ||
!qp->sq.w_list || !qp->sq.wqe_head) {
@@ -975,11 +986,11 @@ static int create_kernel_qp(struct mlx5_ib_dev *dev,
return 0;
err_wrid:
- kfree(qp->sq.wqe_head);
- kfree(qp->sq.w_list);
- kfree(qp->sq.wrid);
- kfree(qp->sq.wr_data);
- kfree(qp->rq.wrid);
+ kvfree(qp->sq.wqe_head);
+ kvfree(qp->sq.w_list);
+ kvfree(qp->sq.wrid);
+ kvfree(qp->sq.wr_data);
+ kvfree(qp->rq.wrid);
mlx5_db_free(dev->mdev, &qp->db);
err_free:
@@ -992,11 +1003,11 @@ err_buf:
static void destroy_qp_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
{
- kfree(qp->sq.wqe_head);
- kfree(qp->sq.w_list);
- kfree(qp->sq.wrid);
- kfree(qp->sq.wr_data);
- kfree(qp->rq.wrid);
+ kvfree(qp->sq.wqe_head);
+ kvfree(qp->sq.w_list);
+ kvfree(qp->sq.wrid);
+ kvfree(qp->sq.wr_data);
+ kvfree(qp->rq.wrid);
mlx5_db_free(dev->mdev, &qp->db);
mlx5_buf_free(dev->mdev, &qp->buf);
}
@@ -1021,12 +1032,16 @@ static int is_connected(enum ib_qp_type qp_type)
}
static int create_raw_packet_qp_tis(struct mlx5_ib_dev *dev,
+ struct mlx5_ib_qp *qp,
struct mlx5_ib_sq *sq, u32 tdn)
{
u32 in[MLX5_ST_SZ_DW(create_tis_in)] = {0};
void *tisc = MLX5_ADDR_OF(create_tis_in, in, ctx);
MLX5_SET(tisc, tisc, transport_domain, tdn);
+ if (qp->flags & MLX5_IB_QP_UNDERLAY)
+ MLX5_SET(tisc, tisc, underlay_qpn, qp->underlay_qpn);
+
return mlx5_core_create_tis(dev->mdev, in, sizeof(in), &sq->tisn);
}
@@ -1068,11 +1083,16 @@ static int create_raw_packet_qp_sq(struct mlx5_ib_dev *dev,
sqc = MLX5_ADDR_OF(create_sq_in, in, ctx);
MLX5_SET(sqc, sqc, flush_in_error_en, 1);
+ if (MLX5_CAP_ETH(dev->mdev, multi_pkt_send_wqe))
+ MLX5_SET(sqc, sqc, allow_multi_pkt_send_wqe, 1);
MLX5_SET(sqc, sqc, state, MLX5_SQC_STATE_RST);
MLX5_SET(sqc, sqc, user_index, MLX5_GET(qpc, qpc, user_index));
MLX5_SET(sqc, sqc, cqn, MLX5_GET(qpc, qpc, cqn_snd));
MLX5_SET(sqc, sqc, tis_lst_sz, 1);
MLX5_SET(sqc, sqc, tis_num_0, sq->tisn);
+ if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
+ MLX5_CAP_ETH(dev->mdev, swp))
+ MLX5_SET(sqc, sqc, allow_swp, 1);
wq = MLX5_ADDR_OF(sqc, sqc, wq);
MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
@@ -1229,7 +1249,7 @@ static int create_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
u32 tdn = mucontext->tdn;
if (qp->sq.wqe_cnt) {
- err = create_raw_packet_qp_tis(dev, sq, tdn);
+ err = create_raw_packet_qp_tis(dev, qp, sq, tdn);
if (err)
return err;
@@ -1238,6 +1258,7 @@ static int create_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
goto err_destroy_tis;
sq->base.container_mibqp = qp;
+ sq->base.mqp.event = mlx5_ib_qp_event;
}
if (qp->rq.wqe_cnt) {
@@ -1502,10 +1523,6 @@ static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
u32 *in;
int err;
- base = init_attr->qp_type == IB_QPT_RAW_PACKET ?
- &qp->raw_packet_qp.rq.base :
- &qp->trans_qp.base;
-
mutex_init(&qp->mutex);
spin_lock_init(&qp->sq.lock);
spin_lock_init(&qp->rq.lock);
@@ -1587,10 +1604,28 @@ static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
qp->wq_sig = !!(ucmd.flags & MLX5_QP_FLAG_SIGNATURE);
qp->scat_cqe = !!(ucmd.flags & MLX5_QP_FLAG_SCATTER_CQE);
+
+ if (init_attr->create_flags & IB_QP_CREATE_SOURCE_QPN) {
+ if (init_attr->qp_type != IB_QPT_UD ||
+ (MLX5_CAP_GEN(dev->mdev, port_type) !=
+ MLX5_CAP_PORT_TYPE_IB) ||
+ !mlx5_get_flow_namespace(dev->mdev, MLX5_FLOW_NAMESPACE_BYPASS)) {
+ mlx5_ib_dbg(dev, "Source QP option isn't supported\n");
+ return -EOPNOTSUPP;
+ }
+
+ qp->flags |= MLX5_IB_QP_UNDERLAY;
+ qp->underlay_qpn = init_attr->source_qpn;
+ }
} else {
qp->wq_sig = !!wq_signature;
}
+ base = (init_attr->qp_type == IB_QPT_RAW_PACKET ||
+ qp->flags & MLX5_IB_QP_UNDERLAY) ?
+ &qp->raw_packet_qp.rq.base :
+ &qp->trans_qp.base;
+
qp->has_rq = qp_has_rq(init_attr);
err = set_rq_size(dev, &init_attr->cap, qp->has_rq,
qp, (pd && pd->uobject) ? &ucmd : NULL);
@@ -1694,10 +1729,15 @@ static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
MLX5_SET(qpc, qpc, rq_type, get_rx_type(qp, init_attr));
- if (qp->sq.wqe_cnt)
+ if (qp->sq.wqe_cnt) {
MLX5_SET(qpc, qpc, log_sq_size, ilog2(qp->sq.wqe_cnt));
- else
+ } else {
MLX5_SET(qpc, qpc, no_sq, 1);
+ if (init_attr->srq &&
+ init_attr->srq->srq_type == IB_SRQT_TM)
+ MLX5_SET(qpc, qpc, offload_type,
+ MLX5_QPC_OFFLOAD_TYPE_RNDV);
+ }
/* Set default resources */
switch (init_attr->qp_type) {
@@ -1741,7 +1781,8 @@ static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
qp->flags |= MLX5_IB_QP_LSO;
}
- if (init_attr->qp_type == IB_QPT_RAW_PACKET) {
+ if (init_attr->qp_type == IB_QPT_RAW_PACKET ||
+ qp->flags & MLX5_IB_QP_UNDERLAY) {
qp->raw_packet_qp.sq.ubuffer.buf_addr = ucmd.sq_buf_addr;
raw_packet_qp_copy_info(qp, &qp->raw_packet_qp);
err = create_raw_packet_qp(dev, qp, in, pd);
@@ -1893,7 +1934,7 @@ static int modify_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
static void destroy_qp_common(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
{
struct mlx5_ib_cq *send_cq, *recv_cq;
- struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
+ struct mlx5_ib_qp_base *base;
unsigned long flags;
int err;
@@ -1902,12 +1943,14 @@ static void destroy_qp_common(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
return;
}
- base = qp->ibqp.qp_type == IB_QPT_RAW_PACKET ?
+ base = (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
+ qp->flags & MLX5_IB_QP_UNDERLAY) ?
&qp->raw_packet_qp.rq.base :
&qp->trans_qp.base;
if (qp->state != IB_QPS_RESET) {
- if (qp->ibqp.qp_type != IB_QPT_RAW_PACKET) {
+ if (qp->ibqp.qp_type != IB_QPT_RAW_PACKET &&
+ !(qp->flags & MLX5_IB_QP_UNDERLAY)) {
err = mlx5_core_qp_modify(dev->mdev,
MLX5_CMD_OP_2RST_QP, 0,
NULL, &base->mqp);
@@ -1946,7 +1989,8 @@ static void destroy_qp_common(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
mlx5_ib_unlock_cqs(send_cq, recv_cq);
spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
- if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET) {
+ if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
+ qp->flags & MLX5_IB_QP_UNDERLAY) {
destroy_raw_packet_qp(dev, qp);
} else {
err = mlx5_core_destroy_qp(dev->mdev, &base->mqp);
@@ -2702,7 +2746,8 @@ static int __mlx5_ib_modify_qp(struct ib_qp *ibqp,
if (is_sqp(ibqp->qp_type)) {
context->mtu_msgmax = (IB_MTU_256 << 5) | 8;
- } else if (ibqp->qp_type == IB_QPT_UD ||
+ } else if ((ibqp->qp_type == IB_QPT_UD &&
+ !(qp->flags & MLX5_IB_QP_UNDERLAY)) ||
ibqp->qp_type == MLX5_IB_QPT_REG_UMR) {
context->mtu_msgmax = (IB_MTU_4096 << 5) | 12;
} else if (attr_mask & IB_QP_PATH_MTU) {
@@ -2799,6 +2844,11 @@ static int __mlx5_ib_modify_qp(struct ib_qp *ibqp,
if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
u8 port_num = (attr_mask & IB_QP_PORT ? attr->port_num :
qp->port) - 1;
+
+ /* Underlay port should be used - index 0 function per port */
+ if (qp->flags & MLX5_IB_QP_UNDERLAY)
+ port_num = 0;
+
mibport = &dev->port[port_num];
context->qp_counter_set_usr_page |=
cpu_to_be32((u32)(mibport->cnts.set_id) << 24);
@@ -2824,7 +2874,8 @@ static int __mlx5_ib_modify_qp(struct ib_qp *ibqp,
optpar = ib_mask_to_mlx5_opt(attr_mask);
optpar &= opt_mask[mlx5_cur][mlx5_new][mlx5_st];
- if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET) {
+ if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
+ qp->flags & MLX5_IB_QP_UNDERLAY) {
struct mlx5_modify_raw_qp_param raw_qp_param = {};
raw_qp_param.operation = op;
@@ -2913,7 +2964,13 @@ int mlx5_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
ll = dev->ib_dev.get_link_layer(&dev->ib_dev, port);
}
- if (qp_type != MLX5_IB_QPT_REG_UMR &&
+ if (qp->flags & MLX5_IB_QP_UNDERLAY) {
+ if (attr_mask & ~(IB_QP_STATE | IB_QP_CUR_STATE)) {
+ mlx5_ib_dbg(dev, "invalid attr_mask 0x%x when underlay QP is used\n",
+ attr_mask);
+ goto out;
+ }
+ } else if (qp_type != MLX5_IB_QPT_REG_UMR &&
!ib_modify_qp_is_ok(cur_state, new_state, qp_type, attr_mask, ll)) {
mlx5_ib_dbg(dev, "invalid QP state transition from %d to %d, qp_type %d, attr_mask 0x%x\n",
cur_state, new_state, ibqp->qp_type, attr_mask);
@@ -4477,9 +4534,14 @@ int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
return mlx5_ib_gsi_query_qp(ibqp, qp_attr, qp_attr_mask,
qp_init_attr);
+ /* Not all of output fields are applicable, make sure to zero them */
+ memset(qp_init_attr, 0, sizeof(*qp_init_attr));
+ memset(qp_attr, 0, sizeof(*qp_attr));
+
mutex_lock(&qp->mutex);
- if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET) {
+ if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
+ qp->flags & MLX5_IB_QP_UNDERLAY) {
err = query_raw_packet_qp_state(dev, qp, &raw_packet_qp_state);
if (err)
goto out;
@@ -4597,6 +4659,27 @@ static void mlx5_ib_wq_event(struct mlx5_core_qp *core_qp, int type)
}
}
+static int set_delay_drop(struct mlx5_ib_dev *dev)
+{
+ int err = 0;
+
+ mutex_lock(&dev->delay_drop.lock);
+ if (dev->delay_drop.activate)
+ goto out;
+
+ err = mlx5_core_set_delay_drop(dev->mdev, dev->delay_drop.timeout);
+ if (err)
+ goto out;
+
+ dev->delay_drop.activate = true;
+out:
+ mutex_unlock(&dev->delay_drop.lock);
+
+ if (!err)
+ atomic_inc(&dev->delay_drop.rqs_cnt);
+ return err;
+}
+
static int create_rq(struct mlx5_ib_rwq *rwq, struct ib_pd *pd,
struct ib_wq_init_attr *init_attr)
{
@@ -4651,9 +4734,28 @@ static int create_rq(struct mlx5_ib_rwq *rwq, struct ib_pd *pd,
}
MLX5_SET(rqc, rqc, scatter_fcs, 1);
}
+ if (init_attr->create_flags & IB_WQ_FLAGS_DELAY_DROP) {
+ if (!(dev->ib_dev.attrs.raw_packet_caps &
+ IB_RAW_PACKET_CAP_DELAY_DROP)) {
+ mlx5_ib_dbg(dev, "Delay drop is not supported\n");
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+ MLX5_SET(rqc, rqc, delay_drop_en, 1);
+ }
rq_pas0 = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
mlx5_ib_populate_pas(dev, rwq->umem, rwq->page_shift, rq_pas0, 0);
err = mlx5_core_create_rq_tracked(dev->mdev, in, inlen, &rwq->core_qp);
+ if (!err && init_attr->create_flags & IB_WQ_FLAGS_DELAY_DROP) {
+ err = set_delay_drop(dev);
+ if (err) {
+ mlx5_ib_warn(dev, "Failed to enable delay drop err=%d\n",
+ err);
+ mlx5_core_destroy_rq_tracked(dev->mdev, &rwq->core_qp);
+ } else {
+ rwq->create_flags |= MLX5_IB_WQ_FLAGS_DELAY_DROP;
+ }
+ }
out:
kvfree(in);
return err;
@@ -4787,7 +4889,7 @@ struct ib_wq *mlx5_ib_create_wq(struct ib_pd *pd,
err_copy:
mlx5_core_destroy_rq_tracked(dev->mdev, &rwq->core_qp);
err_user_rq:
- destroy_user_rq(pd, rwq);
+ destroy_user_rq(dev, pd, rwq);
err:
kfree(rwq);
return ERR_PTR(err);
@@ -4799,7 +4901,7 @@ int mlx5_ib_destroy_wq(struct ib_wq *wq)
struct mlx5_ib_rwq *rwq = to_mrwq(wq);
mlx5_core_destroy_rq_tracked(dev->mdev, &rwq->core_qp);
- destroy_user_rq(wq->pd, rwq);
+ destroy_user_rq(dev, wq->pd, rwq);
kfree(rwq);
return 0;