@@ -165,6 +165,7 @@
goto error;
}
priv->regexdev->dev_ops = &mlx5_regexdev_ops;
+ priv->regexdev->enqueue = mlx5_regexdev_enqueue;
priv->regexdev->device = (struct rte_device *)pci_dev;
priv->regexdev->data->dev_private = priv;
priv->regexdev->state = RTE_REGEXDEV_READY;
@@ -21,6 +21,9 @@ struct mlx5_regex_sq {
uint32_t dbr_umem; /* Door bell record umem id. */
uint8_t *wqe; /* The SQ ring buffer. */
struct mlx5dv_devx_umem *wqe_umem; /* SQ buffer umem. */
+ size_t pi, db_pi;
+ size_t ci;
+ uint32_t sqn;
uint32_t *dbr;
};
@@ -45,6 +48,7 @@ struct mlx5_regex_qp {
struct ibv_mr *metadata;
struct ibv_mr *inputs;
struct ibv_mr *outputs;
+ size_t ci, pi;
};
struct mlx5_regex_db {
@@ -99,4 +103,6 @@ int mlx5_regex_qp_setup(struct rte_regexdev *dev, uint16_t qp_ind,
/* mlx5_regex_fastpath.c */
int mlx5_regexdev_setup_fastpath(struct mlx5_regex_priv *priv, uint32_t qp_id);
+uint16_t mlx5_regexdev_enqueue(struct rte_regexdev *dev, uint16_t qp_id,
+ struct rte_regex_ops **ops, uint16_t nb_ops);
#endif /* MLX5_REGEX_H */
@@ -216,6 +216,8 @@
sq->wqe = buf;
sq->wqe_umem = mlx5_glue->devx_umem_reg(priv->ctx, buf, 64 * sq_size,
7);
+ sq->ci = 0;
+ sq->pi = 0;
if (!sq->wqe_umem) {
DRV_LOG(ERR, "Can't register wqe mem.");
rte_errno = ENOMEM;
@@ -33,10 +33,14 @@
#pragma GCC diagnostic error "-Wpedantic"
#endif
-#define MAX_WQE_INDEX 0xffff
+#define MLX5_REGEX_MAX_WQE_INDEX 0xffff
#define MLX5_REGEX_METADATA_SIZE 64
-#define MLX5_REGEX_MAX_INPUT (1<<14)
-#define MLX5_REGEX_MAX_OUTPUT (1<<11)
+#define MLX5_REGEX_MAX_INPUT (1 << 14)
+#define MLX5_REGEX_MAX_OUTPUT (1 << 11)
+#define MLX5_REGEX_WQE_CTRL_OFFSET 12
+#define MLX5_REGEX_WQE_METADATA_OFFSET 16
+#define MLX5_REGEX_WQE_GATHER_OFFSET 32
+#define MLX5_REGEX_WQE_SCATTER_OFFSET 48
#define MLX5_REGEX_WQE_METADATA_OFFSET 16
#define MLX5_REGEX_WQE_GATHER_OFFSET 32
@@ -80,6 +84,120 @@ struct mlx5_regex_job {
seg->addr = rte_cpu_to_be_64(address);
}
+static inline void
+set_regex_ctrl_seg(void *seg, uint8_t le, uint16_t subset_id0,
+ uint16_t subset_id1, uint16_t subset_id2,
+ uint16_t subset_id3, uint8_t ctrl)
+{
+ MLX5_SET(regexp_mmo_control, seg, le, le);
+ MLX5_SET(regexp_mmo_control, seg, ctrl, ctrl);
+ MLX5_SET(regexp_mmo_control, seg, subset_id_0, subset_id0);
+ MLX5_SET(regexp_mmo_control, seg, subset_id_1, subset_id1);
+ MLX5_SET(regexp_mmo_control, seg, subset_id_2, subset_id2);
+ MLX5_SET(regexp_mmo_control, seg, subset_id_3, subset_id3);
+}
+
+static inline void
+set_wqe_ctrl_seg(struct mlx5_wqe_ctrl_seg *seg, uint16_t pi, uint8_t opcode,
+ uint8_t opmod, uint32_t qp_num, uint8_t fm_ce_se, uint8_t ds,
+ uint8_t signature, uint32_t imm)
+{
+ seg->opmod_idx_opcode = rte_cpu_to_be_32(((uint32_t)opmod << 24) |
+ ((uint32_t)pi << 8) |
+ opcode);
+ seg->qpn_ds = rte_cpu_to_be_32((qp_num << 8) | ds);
+ seg->fm_ce_se = fm_ce_se;
+ seg->signature = signature;
+ seg->imm = imm;
+}
+
+static inline void
+prep_one(struct mlx5_regex_sq *sq, struct rte_regex_ops *op,
+ struct mlx5_regex_job *job)
+{
+ size_t wqe_offset = (sq->pi & (sq_size_get(sq) - 1)) * MLX5_SEND_WQE_BB;
+ uint8_t *wqe = (uint8_t *)sq->wqe + wqe_offset;
+ int ds = 4; /* ctrl + meta + input + output */
+
+ memcpy(job->input,
+ rte_pktmbuf_mtod(op->mbuf, void *),
+ rte_pktmbuf_data_len(op->mbuf));
+ set_wqe_ctrl_seg((struct mlx5_wqe_ctrl_seg *)wqe, sq->pi,
+ MLX5_OPCODE_MMO, MLX5_OPC_MOD_MMO_REGEX, sq->obj->id,
+ 0, ds, 0, 0);
+ set_regex_ctrl_seg(wqe + 12, 0, op->group_id0, op->group_id1,
+ op->group_id2,
+ op->group_id3, 0);
+ struct mlx5_wqe_data_seg *input_seg =
+ (struct mlx5_wqe_data_seg *)(wqe +
+ MLX5_REGEX_WQE_GATHER_OFFSET);
+ input_seg->byte_count =
+ rte_cpu_to_be_32(rte_pktmbuf_data_len(op->mbuf));
+ job->user_id = op->user_id;
+ sq->db_pi = sq->pi;
+ sq->pi = (sq->pi + 1) & MLX5_REGEX_MAX_WQE_INDEX;
+}
+
+static inline void
+send_doorbell(struct mlx5dv_devx_uar *uar, struct mlx5_regex_sq *sq)
+{
+ size_t wqe_offset = (sq->db_pi & (sq_size_get(sq) - 1)) *
+ MLX5_SEND_WQE_BB;
+ uint8_t *wqe = (uint8_t *)sq->wqe + wqe_offset;
+ ((struct mlx5_wqe_ctrl_seg *)wqe)->fm_ce_se = MLX5_WQE_CTRL_CQ_UPDATE;
+ uint64_t *doorbell_addr =
+ (uint64_t *)((uint8_t *)uar->base_addr + 0x800);
+ rte_cio_wmb();
+ sq->dbr[MLX5_SND_DBR] = rte_cpu_to_be_32((sq->db_pi + 1) &
+ MLX5_REGEX_MAX_WQE_INDEX);
+ rte_wmb();
+ *doorbell_addr = *(volatile uint64_t *)wqe;
+ rte_wmb();
+}
+
+static inline int
+can_send(struct mlx5_regex_sq *sq) {
+ return unlikely(sq->ci > sq->pi) ?
+ MLX5_REGEX_MAX_WQE_INDEX + sq->pi - sq->ci <
+ sq_size_get(sq) :
+ sq->pi - sq->ci < sq_size_get(sq);
+}
+
+static inline uint32_t
+job_id_get(uint32_t qid, size_t sq_size, size_t index) {
+ return qid*sq_size + index % sq_size;
+}
+
+uint16_t
+mlx5_regexdev_enqueue(struct rte_regexdev *dev, uint16_t qp_id,
+ struct rte_regex_ops **ops, uint16_t nb_ops)
+{
+ struct mlx5_regex_priv *priv = dev->data->dev_private;
+ struct mlx5_regex_qp *queue = &priv->qps[qp_id];
+ struct mlx5_regex_sq *sq;
+ size_t sqid, job_id, i = 0;
+
+ while ((sqid = ffs(queue->free_sqs))) {
+ sqid--; /* ffs returns 1 for bit 0 */
+ sq = &queue->sqs[sqid];
+ while (can_send(sq)) {
+ job_id = job_id_get(sqid, sq_size_get(sq), sq->pi);
+ prep_one(sq, ops[i], &queue->jobs[job_id]);
+ i++;
+ if (unlikely(i == nb_ops)) {
+ send_doorbell(priv->uar, sq);
+ goto out;
+ }
+ }
+ queue->free_sqs &= ~(1 << sqid);
+ send_doorbell(priv->uar, sq);
+ }
+
+out:
+ queue->pi += i;
+ return i;
+}
+
static void
setup_sqs(struct mlx5_regex_qp *queue)
{
@@ -155,7 +273,7 @@ struct mlx5_regex_job {
goto err_output;
}
qp->outputs = mlx5_glue->reg_mr(pd, ptr,
- MLX5_REGEX_MAX_OUTPUT*qp->nb_desc,
+ MLX5_REGEX_MAX_OUTPUT * qp->nb_desc,
IBV_ACCESS_LOCAL_WRITE);
if (!qp->outputs) {
rte_free(ptr);