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Diffstat (limited to 'doc/guides/nics/mlx4.rst')
| -rw-r--r-- | doc/guides/nics/mlx4.rst | 37 |
1 files changed, 1 insertions, 36 deletions
diff --git a/doc/guides/nics/mlx4.rst b/doc/guides/nics/mlx4.rst index f8885b23..5c3fb764 100644 --- a/doc/guides/nics/mlx4.rst +++ b/doc/guides/nics/mlx4.rst @@ -1,5 +1,5 @@ .. BSD LICENSE - Copyright 2012-2015 6WIND S.A. + Copyright 2012 6WIND S.A. Copyright 2015 Mellanox Redistribution and use in source and binary forms, with or without @@ -78,29 +78,9 @@ Features -------- - Multi arch support: x86_64 and POWER8. -- RSS, also known as RCA, is supported. In this mode the number of - configured RX queues must be a power of two. -- VLAN filtering is supported. - Link state information is provided. -- Promiscuous mode is supported. -- All multicast mode is supported. -- Multiple MAC addresses (unicast, multicast) can be configured. -- Scattered packets are supported for TX and RX. -- Inner L3/L4 (IP, TCP and UDP) TX/RX checksum offloading and validation. -- Outer L3 (IP) TX/RX checksum offloading and validation for VXLAN frames. -- Secondary process TX is supported. - RX interrupts. -Limitations ------------ - -- RSS hash key cannot be modified. -- RSS RETA cannot be configured -- RSS always includes L3 (IPv4/IPv6) and L4 (UDP/TCP). They cannot be - dissociated. -- Hardware counters are not implemented (they are software counters). -- Secondary process RX is not supported. - Configuration ------------- @@ -127,13 +107,6 @@ These options can be modified in the ``.config`` file. to abort with harmless debugging messages as a workaround. Relevant only when CONFIG_RTE_LIBRTE_MLX4_DEBUG is enabled. -- ``CONFIG_RTE_LIBRTE_MLX4_SGE_WR_N`` (default **4**) - - Number of scatter/gather elements (SGEs) per work request (WR). Lowering - this number improves performance but also limits the ability to receive - scattered packets (packets that do not fit a single mbuf). The default - value is a safe tradeoff. - - ``CONFIG_RTE_LIBRTE_MLX4_MAX_INLINE`` (default **0**) Amount of data to be inlined during TX operations. Improves latency but @@ -147,11 +120,6 @@ These options can be modified in the ``.config`` file. This value is always 1 for RX queues since they use a single MP. -- ``CONFIG_RTE_LIBRTE_MLX4_SOFT_COUNTERS`` (default **1**) - - Toggle software counters. No counters are available if this option is - disabled since hardware counters are not supported. - Environment variables ~~~~~~~~~~~~~~~~~~~~~ @@ -164,9 +132,6 @@ Environment variables Run-time configuration ~~~~~~~~~~~~~~~~~~~~~~ -- The only constraint when RSS mode is requested is to make sure the number - of RX queues is a power of two. This is a hardware requirement. - - librte_pmd_mlx4 brings kernel network interfaces up during initialization because it is affected by their state. Forcing them down prevents packets reception. |