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-rw-r--r--doc/guides/nics/mlx4.rst37
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.