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5 * Copyright 2015 Mellanox.
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34 #ifndef RTE_PMD_MLX5_DEFS_H_
35 #define RTE_PMD_MLX5_DEFS_H_
37 #include "mlx5_autoconf.h"
39 /* Reported driver name. */
40 #define MLX5_DRIVER_NAME "net_mlx5"
42 /* Maximum number of simultaneous MAC addresses. */
43 #define MLX5_MAX_MAC_ADDRESSES 128
45 /* Maximum number of simultaneous VLAN filters. */
46 #define MLX5_MAX_VLAN_IDS 128
48 /* Maximum number of special flows. */
49 #define MLX5_MAX_SPECIAL_FLOWS 4
52 * Request TX completion every time descriptors reach this threshold since
53 * the previous request. Must be a power of two for performance reasons.
55 #define MLX5_TX_COMP_THRESH 32
58 * Request TX completion every time the total number of WQEBBs used for inlining
59 * packets exceeds the size of WQ divided by this divisor. Better to be power of
60 * two for performance.
62 #define MLX5_TX_COMP_THRESH_INLINE_DIV (1 << 3)
65 * Maximum number of cached Memory Pools (MPs) per TX queue. Each RTE MP
66 * from which buffers are to be transmitted will have to be mapped by this
67 * driver to their own Memory Region (MR). This is a slow operation.
69 * This value is always 1 for RX queues.
71 #ifndef MLX5_PMD_TX_MP_CACHE
72 #define MLX5_PMD_TX_MP_CACHE 8
76 * If defined, only use software counters. The PMD will never ask the hardware
77 * for these, and many of them won't be available.
79 #ifndef MLX5_PMD_SOFT_COUNTERS
80 #define MLX5_PMD_SOFT_COUNTERS 1
84 #define MLX5_ALARM_TIMEOUT_US 100000
86 /* Maximum number of extended statistics counters. */
87 #define MLX5_MAX_XSTATS 32
89 /* Maximum Packet headers size (L2+L3+L4) for TSO. */
90 #define MLX5_MAX_TSO_HEADER 128
92 /* Default minimum number of Tx queues for vectorized Tx. */
93 #define MLX5_VPMD_MIN_TXQS 4
95 /* Threshold of buffer replenishment for vectorized Rx. */
96 #define MLX5_VPMD_RXQ_RPLNSH_THRESH 64U
98 /* Maximum size of burst for vectorized Rx. */
99 #define MLX5_VPMD_RX_MAX_BURST MLX5_VPMD_RXQ_RPLNSH_THRESH
102 * Maximum size of burst for vectorized Tx. This is related to the maximum size
103 * of Enhanced MPW (eMPW) WQE as vectorized Tx is supported with eMPW.
104 * Careful when changing, large value can cause WQE DS to overlap.
106 #define MLX5_VPMD_TX_MAX_BURST 32U
108 /* Number of packets vectorized Rx can simultaneously process in a loop. */
109 #define MLX5_VPMD_DESCS_PER_LOOP 4
111 #endif /* RTE_PMD_MLX5_DEFS_H_ */