6ce84bd889
ConnectX-5 supports enhanced version of multi-packet send (MPS). An MPS Tx descriptor can carry multiple packets either by including pointers of packets or by inlining packets. Inlining packet data can be helpful to better utilize PCIe bandwidth. In addition, Enhanced MPS supports hybrid mode - mixing inlined packets and pointers in a descriptor. This feature is enabled by default if supported by HW. Signed-off-by: Yongseok Koh <yskoh@mellanox.com>
93 lines
3.2 KiB
C
93 lines
3.2 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright 2015 6WIND S.A.
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* Copyright 2015 Mellanox.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of 6WIND S.A. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef RTE_PMD_MLX5_DEFS_H_
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#define RTE_PMD_MLX5_DEFS_H_
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#include "mlx5_autoconf.h"
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/* Reported driver name. */
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#define MLX5_DRIVER_NAME "net_mlx5"
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/* Maximum number of simultaneous MAC addresses. */
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#define MLX5_MAX_MAC_ADDRESSES 128
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/* Maximum number of simultaneous VLAN filters. */
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#define MLX5_MAX_VLAN_IDS 128
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/* Maximum number of special flows. */
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#define MLX5_MAX_SPECIAL_FLOWS 4
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/*
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* Request TX completion every time descriptors reach this threshold since
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* the previous request. Must be a power of two for performance reasons.
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*/
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#define MLX5_TX_COMP_THRESH 32
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/*
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* Request TX completion every time the total number of WQEBBs used for inlining
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* packets exceeds the size of WQ divided by this divisor. Better to be power of
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* two for performance.
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*/
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#define MLX5_TX_COMP_THRESH_INLINE_DIV (1 << 3)
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/*
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* Maximum number of cached Memory Pools (MPs) per TX queue. Each RTE MP
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* from which buffers are to be transmitted will have to be mapped by this
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* driver to their own Memory Region (MR). This is a slow operation.
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*
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* This value is always 1 for RX queues.
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*/
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#ifndef MLX5_PMD_TX_MP_CACHE
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#define MLX5_PMD_TX_MP_CACHE 8
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#endif
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/*
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* If defined, only use software counters. The PMD will never ask the hardware
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* for these, and many of them won't be available.
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*/
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#ifndef MLX5_PMD_SOFT_COUNTERS
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#define MLX5_PMD_SOFT_COUNTERS 1
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#endif
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/* Alarm timeout. */
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#define MLX5_ALARM_TIMEOUT_US 100000
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/* Maximum number of extended statistics counters. */
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#define MLX5_MAX_XSTATS 32
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/* Maximum Packet headers size (L2+L3+L4) for TSO. */
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#define MLX5_MAX_TSO_HEADER 128
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#endif /* RTE_PMD_MLX5_DEFS_H_ */
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