mlx5/mlx5en: Add SQ remap support
Add support to map an SQ to a specific schedule queue using a special WQE as performance enhancement. SQ remap operation is handled by a privileged internal queue, IQ, and the mapping is enabled from one rate to another. The transition from paced to non-paced should however always go through FW. MFC after: 1 week Sponsored by: NVIDIA Networking
This commit is contained in:
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1c407d0494
commit
266c81aae3
@ -391,6 +391,7 @@ enum {
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MLX5_OPCODE_RCHECK_PSV = 0x27,
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MLX5_OPCODE_RCHECK_PSV = 0x27,
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MLX5_OPCODE_UMR = 0x25,
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MLX5_OPCODE_UMR = 0x25,
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MLX5_OPCODE_QOS_REMAP = 0x2a,
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MLX5_OPCODE_SIGNATURE_CANCELED = (1 << 15),
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MLX5_OPCODE_SIGNATURE_CANCELED = (1 << 15),
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};
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};
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@ -50,6 +50,8 @@
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#define MLX5_QCOUNTER_SETS_NETDEV 64
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#define MLX5_QCOUNTER_SETS_NETDEV 64
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#define MLX5_MAX_NUMBER_OF_VFS 128
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#define MLX5_MAX_NUMBER_OF_VFS 128
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#define MLX5_INVALID_QUEUE_HANDLE 0xffffffff
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enum {
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enum {
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MLX5_BOARD_ID_LEN = 64,
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MLX5_BOARD_ID_LEN = 64,
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MLX5_MAX_NAME_LEN = 16,
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MLX5_MAX_NAME_LEN = 16,
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@ -545,6 +547,7 @@ struct mlx5_rl_entry {
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u32 rate;
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u32 rate;
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u16 burst;
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u16 burst;
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u16 index;
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u16 index;
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u32 qos_handle; /* schedule queue handle */
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u32 refcount;
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u32 refcount;
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};
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};
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@ -1189,6 +1192,15 @@ void mlx5_cleanup_rl_table(struct mlx5_core_dev *dev);
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int mlx5_rl_add_rate(struct mlx5_core_dev *dev, u32 rate, u32 burst, u16 *index);
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int mlx5_rl_add_rate(struct mlx5_core_dev *dev, u32 rate, u32 burst, u16 *index);
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void mlx5_rl_remove_rate(struct mlx5_core_dev *dev, u32 rate, u32 burst);
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void mlx5_rl_remove_rate(struct mlx5_core_dev *dev, u32 rate, u32 burst);
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bool mlx5_rl_is_in_range(const struct mlx5_core_dev *dev, u32 rate, u32 burst);
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bool mlx5_rl_is_in_range(const struct mlx5_core_dev *dev, u32 rate, u32 burst);
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int mlx5e_query_rate_limit_cmd(struct mlx5_core_dev *dev, u16 index, u32 *scq_handle);
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static inline u32 mlx5_rl_get_scq_handle(struct mlx5_core_dev *dev, uint16_t index)
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{
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KASSERT(index > 0,
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("invalid rate index for sq remap, failed retrieving SCQ handle"));
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return (dev->priv.rl_table.rl_entry[index - 1].qos_handle);
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}
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static inline bool mlx5_rl_is_supported(struct mlx5_core_dev *dev)
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static inline bool mlx5_rl_is_supported(struct mlx5_core_dev *dev)
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{
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{
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@ -73,6 +73,25 @@ static int mlx5_set_rate_limit_cmd(struct mlx5_core_dev *dev,
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return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
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return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
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}
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}
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int mlx5e_query_rate_limit_cmd(struct mlx5_core_dev *dev,
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u16 index, u32 *scq_handle)
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{
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int err;
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u32 in[MLX5_ST_SZ_DW(query_pp_rate_limit_in)] = {};
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u32 out[MLX5_ST_SZ_DW(query_pp_rate_limit_out)] = {};
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MLX5_SET(query_pp_rate_limit_in, in, opcode, MLX5_CMD_OP_QUERY_RATE_LIMIT);
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MLX5_SET(query_pp_rate_limit_in, in, rate_limit_index, index);
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err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
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if (err)
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return err;
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*scq_handle = MLX5_GET(query_pp_rate_limit_out, out, pp_context.qos_handle);
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return 0;
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}
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bool mlx5_rl_is_in_range(const struct mlx5_core_dev *dev, u32 rate, u32 burst)
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bool mlx5_rl_is_in_range(const struct mlx5_core_dev *dev, u32 rate, u32 burst)
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{
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{
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const struct mlx5_rl_table *table = &dev->priv.rl_table;
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const struct mlx5_rl_table *table = &dev->priv.rl_table;
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@ -122,6 +141,16 @@ int mlx5_rl_add_rate(struct mlx5_core_dev *dev, u32 rate, u32 burst, u16 *index)
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entry->rate = rate;
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entry->rate = rate;
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entry->burst = burst;
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entry->burst = burst;
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entry->refcount = 1;
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entry->refcount = 1;
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if (MLX5_CAP_QOS(dev, qos_remap_pp)) {
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err = mlx5e_query_rate_limit_cmd(dev, entry->index, &entry->qos_handle);
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if (err) {
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mlx5_core_err(dev, "Failed retrieving schedule queue handle for"
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"SQ remap: rate: %u error:(%d)\n", rate, err);
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entry->qos_handle = MLX5_INVALID_QUEUE_HANDLE;
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}
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} else
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entry->qos_handle = MLX5_INVALID_QUEUE_HANDLE;
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}
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}
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*index = entry->index;
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*index = entry->index;
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@ -880,6 +880,7 @@ struct mlx5e_sq {
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u16 max_inline;
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u16 max_inline;
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u8 min_inline_mode;
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u8 min_inline_mode;
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u8 min_insert_caps;
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u8 min_insert_caps;
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u32 queue_handle; /* SQ remap support */
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#define MLX5E_INSERT_VLAN 1
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#define MLX5E_INSERT_VLAN 1
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#define MLX5E_INSERT_NON_VLAN 2
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#define MLX5E_INSERT_NON_VLAN 2
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@ -1145,6 +1146,11 @@ struct mlx5e_tx_psv_wqe {
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struct mlx5_seg_set_psv psv;
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struct mlx5_seg_set_psv psv;
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};
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};
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struct mlx5e_tx_qos_remap_wqe {
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struct mlx5_wqe_ctrl_seg ctrl;
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struct mlx5_wqe_qos_remap_seg qos_remap;
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};
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struct mlx5e_rx_wqe {
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struct mlx5e_rx_wqe {
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struct mlx5_wqe_srq_next_seg next;
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struct mlx5_wqe_srq_next_seg next;
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struct mlx5_wqe_data_seg data[];
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struct mlx5_wqe_data_seg data[];
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@ -262,6 +262,16 @@ mlx5e_iq_enable(struct mlx5e_iq *iq, struct mlx5e_sq_param *param,
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MLX5_SET(sqc, sqc, flush_in_error_en, 1);
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MLX5_SET(sqc, sqc, flush_in_error_en, 1);
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MLX5_SET(sqc, sqc, allow_swp, 1);
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MLX5_SET(sqc, sqc, allow_swp, 1);
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/* SQ remap support requires reg_umr privileges level */
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if (MLX5_CAP_QOS(iq->priv->mdev, qos_remap_pp)) {
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MLX5_SET(sqc, sqc, qos_remap_en, 1);
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if (MLX5_CAP_ETH(iq->priv->mdev, reg_umr_sq))
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MLX5_SET(sqc, sqc, reg_umr, 1);
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else
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mlx5_en_err(iq->priv->ifp,
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"No reg umr SQ capability, SQ remap disabled\n");
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}
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MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
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MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
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MLX5_SET(wq, wq, uar_page, bfreg->index);
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MLX5_SET(wq, wq, uar_page, bfreg->index);
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MLX5_SET(wq, wq, log_wq_pg_sz, iq->wq_ctrl.buf.page_shift -
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MLX5_SET(wq, wq, log_wq_pg_sz, iq->wq_ctrl.buf.page_shift -
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@ -163,6 +163,29 @@ mlx5e_rl_destroy_sq(struct mlx5e_sq *sq)
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bus_dma_tag_destroy(sq->dma_tag);
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bus_dma_tag_destroy(sq->dma_tag);
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}
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}
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static int
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mlx5e_rl_query_sq(struct mlx5e_sq *sq)
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{
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void *out;
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int inlen;
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int err;
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inlen = MLX5_ST_SZ_BYTES(query_sq_out);
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out = mlx5_vzalloc(inlen);
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if (!out)
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return -ENOMEM;
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err = mlx5_core_query_sq(sq->priv->mdev, sq->sqn, out);
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if (err)
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goto out;
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sq->queue_handle = MLX5_GET(query_sq_out, out, sq_context.queue_handle);
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out:
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kvfree(out);
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return err;
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}
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static int
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static int
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mlx5e_rl_open_sq(struct mlx5e_priv *priv, struct mlx5e_sq *sq,
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mlx5e_rl_open_sq(struct mlx5e_priv *priv, struct mlx5e_sq *sq,
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struct mlx5e_sq_param *param, int ix)
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struct mlx5e_sq_param *param, int ix)
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@ -181,6 +204,16 @@ mlx5e_rl_open_sq(struct mlx5e_priv *priv, struct mlx5e_sq *sq,
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if (err)
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if (err)
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goto err_disable_sq;
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goto err_disable_sq;
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if (MLX5_CAP_QOS(priv->mdev, qos_remap_pp)) {
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err = mlx5e_rl_query_sq(sq);
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if (err) {
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mlx5_en_err(priv->ifp, "Failed retrieving send queue handle for"
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"SQ remap - sqn=%u, err=(%d)\n", sq->sqn, err);
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sq->queue_handle = MLX5_INVALID_QUEUE_HANDLE;
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}
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} else
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sq->queue_handle = MLX5_INVALID_QUEUE_HANDLE;
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WRITE_ONCE(sq->running, 1);
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WRITE_ONCE(sq->running, 1);
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return (0);
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return (0);
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@ -390,6 +423,68 @@ mlx5e_rl_find_best_rate_locked(struct mlx5e_rl_priv_data *rl, uint64_t user_rate
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return (retval);
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return (retval);
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}
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}
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static int
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mlx5e_rl_post_sq_remap_wqe(struct mlx5e_iq *iq, u32 scq_handle, u32 sq_handle)
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{
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const u32 ds_cnt = DIV_ROUND_UP(sizeof(struct mlx5e_tx_qos_remap_wqe),
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MLX5_SEND_WQE_DS);
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struct mlx5e_tx_qos_remap_wqe *wqe;
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int pi;
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mtx_lock(&iq->lock);
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pi = mlx5e_iq_get_producer_index(iq);
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if (pi < 0) {
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mtx_unlock(&iq->lock);
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return (-ENOMEM);
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}
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wqe = mlx5_wq_cyc_get_wqe(&iq->wq, pi);
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memset(wqe, 0, sizeof(*wqe));
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wqe->qos_remap.qos_handle = cpu_to_be32(scq_handle);
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wqe->qos_remap.queue_handle = cpu_to_be32(sq_handle);
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wqe->ctrl.opmod_idx_opcode = cpu_to_be32((iq->pc << 8) |
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MLX5_OPCODE_QOS_REMAP);
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wqe->ctrl.qpn_ds = cpu_to_be32((iq->sqn << 8) | ds_cnt);
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wqe->ctrl.imm = cpu_to_be32(iq->priv->tisn[0] << 8);
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wqe->ctrl.fm_ce_se = MLX5_WQE_CTRL_CQ_UPDATE | MLX5_FENCE_MODE_INITIATOR_SMALL;
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/* copy data for doorbell */
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memcpy(iq->doorbell.d32, &wqe->ctrl, sizeof(iq->doorbell.d32));
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iq->data[pi].num_wqebbs = DIV_ROUND_UP(ds_cnt, MLX5_SEND_WQEBB_NUM_DS);
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iq->pc += iq->data[pi].num_wqebbs;
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mlx5e_iq_notify_hw(iq);
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mtx_unlock(&iq->lock);
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return (0); /* success */
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}
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static int
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mlx5e_rl_remap_sq(struct mlx5e_sq *sq, uint16_t index)
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{
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struct mlx5e_channel *iq_channel;
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u32 scq_handle;
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u32 sq_handle;
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int error;
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/* Specific SQ remap operations should be handled by same IQ */
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iq_channel = &sq->priv->channel[sq->sqn % sq->priv->params.num_channels];
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sq_handle = sq->queue_handle;
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scq_handle = mlx5_rl_get_scq_handle(sq->priv->mdev, index);
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if (sq_handle == -1U || scq_handle == -1U)
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error = -1;
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else
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error = mlx5e_rl_post_sq_remap_wqe(&iq_channel->iq, scq_handle, sq_handle);
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return (error);
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}
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/*
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/*
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* This function sets the requested rate for a rate limit channel, in
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* This function sets the requested rate for a rate limit channel, in
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* bits per second. The requested rate will be filtered through the
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* bits per second. The requested rate will be filtered through the
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@ -405,6 +500,7 @@ mlx5e_rlw_channel_set_rate_locked(struct mlx5e_rl_worker *rlw,
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uint16_t index;
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uint16_t index;
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uint16_t burst;
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uint16_t burst;
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int error;
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int error;
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bool use_sq_remap;
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if (rate != 0) {
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if (rate != 0) {
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MLX5E_RL_WORKER_UNLOCK(rlw);
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MLX5E_RL_WORKER_UNLOCK(rlw);
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@ -448,6 +544,10 @@ mlx5e_rlw_channel_set_rate_locked(struct mlx5e_rl_worker *rlw,
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burst = 0; /* default */
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burst = 0; /* default */
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}
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}
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/* paced <--> non-paced transitions must go via FW */
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use_sq_remap = MLX5_CAP_QOS(rlw->priv->mdev, qos_remap_pp) &&
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channel->last_rate != 0 && rate != 0;
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/* atomically swap rates */
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/* atomically swap rates */
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temp = channel->last_rate;
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temp = channel->last_rate;
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channel->last_rate = rate;
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channel->last_rate = rate;
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@ -468,11 +568,14 @@ mlx5e_rlw_channel_set_rate_locked(struct mlx5e_rl_worker *rlw,
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/* set new rate, if SQ is running */
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/* set new rate, if SQ is running */
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sq = channel->sq;
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sq = channel->sq;
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if (sq != NULL && READ_ONCE(sq->running) != 0) {
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if (sq != NULL && READ_ONCE(sq->running) != 0) {
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error = mlx5e_rl_modify_sq(sq, index);
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if (!use_sq_remap || mlx5e_rl_remap_sq(sq, index)) {
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if (error != 0)
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error = mlx5e_rl_modify_sq(sq, index);
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atomic_add_64(&rlw->priv->rl.stats.tx_modify_rate_failure, 1ULL);
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if (error != 0)
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atomic_add_64(&rlw->priv->rl.stats.tx_modify_rate_failure, 1ULL);
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}
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} else
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} else
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error = 0;
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error = 0;
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MLX5E_RL_WORKER_LOCK(rlw);
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MLX5E_RL_WORKER_LOCK(rlw);
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return (-error);
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return (-error);
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@ -736,7 +736,9 @@ struct mlx5_ifc_qos_cap_bits {
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u8 packet_pacing_typical_size[0x1];
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u8 packet_pacing_typical_size[0x1];
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u8 reserved_at_7[0x19];
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u8 reserved_at_7[0x19];
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u8 reserved_at_20[0x20];
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u8 reserved_at_20[0xA];
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u8 qos_remap_pp[0x1];
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u8 reserved_at_2b[0x15];
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u8 packet_pacing_max_rate[0x20];
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u8 packet_pacing_max_rate[0x20];
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@ -926,9 +928,9 @@ struct mlx5_ifc_per_protocol_networking_offload_caps_bits {
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u8 multi_pkt_send_wqe[0x2];
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u8 multi_pkt_send_wqe[0x2];
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u8 wqe_inline_mode[0x2];
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u8 wqe_inline_mode[0x2];
|
||||||
u8 rss_ind_tbl_cap[0x4];
|
u8 rss_ind_tbl_cap[0x4];
|
||||||
u8 reg_umr_sq[0x1];
|
u8 reg_umr_sq[0x1];
|
||||||
u8 scatter_fcs[0x1];
|
u8 scatter_fcs[0x1];
|
||||||
u8 enhanced_multi_pkt_send_wqe[0x1];
|
u8 enhanced_multi_pkt_send_wqe[0x1];
|
||||||
u8 tunnel_lso_const_out_ip_id[0x1];
|
u8 tunnel_lso_const_out_ip_id[0x1];
|
||||||
u8 tunnel_lro_gre[0x1];
|
u8 tunnel_lro_gre[0x1];
|
||||||
u8 tunnel_lro_vxlan[0x1];
|
u8 tunnel_lro_vxlan[0x1];
|
||||||
@ -2478,7 +2480,9 @@ struct mlx5_ifc_sqc_bits {
|
|||||||
u8 state[0x4];
|
u8 state[0x4];
|
||||||
u8 reg_umr[0x1];
|
u8 reg_umr[0x1];
|
||||||
u8 allow_swp[0x1];
|
u8 allow_swp[0x1];
|
||||||
u8 reserved_at_e[0xc];
|
u8 reserved_at_e[0x4];
|
||||||
|
u8 qos_remap_en[0x1];
|
||||||
|
u8 reserved_at_d[0x7];
|
||||||
u8 ts_format[0x2];
|
u8 ts_format[0x2];
|
||||||
u8 reserved_at_1c[0x4];
|
u8 reserved_at_1c[0x4];
|
||||||
|
|
||||||
@ -2494,9 +2498,12 @@ struct mlx5_ifc_sqc_bits {
|
|||||||
u8 packet_pacing_rate_limit_index[0x10];
|
u8 packet_pacing_rate_limit_index[0x10];
|
||||||
|
|
||||||
u8 tis_lst_sz[0x10];
|
u8 tis_lst_sz[0x10];
|
||||||
u8 reserved_4[0x10];
|
u8 qos_queue_group_id[0x10];
|
||||||
|
|
||||||
u8 reserved_5[0x40];
|
u8 reserved_4[0x8];
|
||||||
|
u8 queue_handle[0x18];
|
||||||
|
|
||||||
|
u8 reserved_5[0x20];
|
||||||
|
|
||||||
u8 reserved_6[0x8];
|
u8 reserved_6[0x8];
|
||||||
u8 tis_num_0[0x18];
|
u8 tis_num_0[0x18];
|
||||||
@ -2504,6 +2511,45 @@ struct mlx5_ifc_sqc_bits {
|
|||||||
struct mlx5_ifc_wq_bits wq;
|
struct mlx5_ifc_wq_bits wq;
|
||||||
};
|
};
|
||||||
|
|
||||||
|
struct mlx5_ifc_query_pp_rate_limit_in_bits {
|
||||||
|
u8 opcode[0x10];
|
||||||
|
u8 uid[0x10];
|
||||||
|
|
||||||
|
u8 reserved1[0x10];
|
||||||
|
u8 op_mod[0x10];
|
||||||
|
|
||||||
|
u8 reserved2[0x10];
|
||||||
|
u8 rate_limit_index[0x10];
|
||||||
|
|
||||||
|
u8 reserved_3[0x20];
|
||||||
|
};
|
||||||
|
|
||||||
|
struct mlx5_ifc_pp_context_bits {
|
||||||
|
u8 rate_limit[0x20];
|
||||||
|
|
||||||
|
u8 burst_upper_bound[0x20];
|
||||||
|
|
||||||
|
u8 reserved_1[0xc];
|
||||||
|
u8 rate_mode[0x4];
|
||||||
|
u8 typical_packet_size[0x10];
|
||||||
|
|
||||||
|
u8 reserved_2[0x8];
|
||||||
|
u8 qos_handle[0x18];
|
||||||
|
|
||||||
|
u8 reserved_3[0x40];
|
||||||
|
};
|
||||||
|
|
||||||
|
struct mlx5_ifc_query_pp_rate_limit_out_bits {
|
||||||
|
u8 status[0x8];
|
||||||
|
u8 reserved_1[0x18];
|
||||||
|
|
||||||
|
u8 syndrome[0x20];
|
||||||
|
|
||||||
|
u8 reserved_2[0x40];
|
||||||
|
|
||||||
|
struct mlx5_ifc_pp_context_bits pp_context;
|
||||||
|
};
|
||||||
|
|
||||||
enum {
|
enum {
|
||||||
MLX5_TSAR_TYPE_DWRR = 0,
|
MLX5_TSAR_TYPE_DWRR = 0,
|
||||||
MLX5_TSAR_TYPE_ROUND_ROUBIN = 1,
|
MLX5_TSAR_TYPE_ROUND_ROUBIN = 1,
|
||||||
@ -5747,12 +5793,13 @@ struct mlx5_ifc_modify_rqt_out_bits {
|
|||||||
};
|
};
|
||||||
|
|
||||||
struct mlx5_ifc_rqt_bitmask_bits {
|
struct mlx5_ifc_rqt_bitmask_bits {
|
||||||
u8 reserved_at_0[0x20];
|
u8 reserved_at_0[0x20];
|
||||||
|
|
||||||
u8 reserved_at_20[0x1f];
|
u8 reserved_at_20[0x1f];
|
||||||
u8 rqn_list[0x1];
|
u8 rqn_list[0x1];
|
||||||
};
|
};
|
||||||
|
|
||||||
|
|
||||||
struct mlx5_ifc_modify_rqt_in_bits {
|
struct mlx5_ifc_modify_rqt_in_bits {
|
||||||
u8 opcode[0x10];
|
u8 opcode[0x10];
|
||||||
u8 uid[0x10];
|
u8 uid[0x10];
|
||||||
|
@ -322,6 +322,13 @@ struct mlx5_seg_set_psv {
|
|||||||
__be32 ref_tag;
|
__be32 ref_tag;
|
||||||
};
|
};
|
||||||
|
|
||||||
|
struct mlx5_wqe_qos_remap_seg {
|
||||||
|
u8 rsvd0[4];
|
||||||
|
u8 rsvd1[4];
|
||||||
|
__be32 qos_handle;
|
||||||
|
__be32 queue_handle;
|
||||||
|
};
|
||||||
|
|
||||||
struct mlx5_seg_get_psv {
|
struct mlx5_seg_get_psv {
|
||||||
u8 rsvd[19];
|
u8 rsvd[19];
|
||||||
u8 num_psv;
|
u8 num_psv;
|
||||||
|
Loading…
Reference in New Issue
Block a user