net/mlx4: remove scatter mode compilation option

[dpdk.git] / doc / guides / nics / mlx4.rst

diff --git a/doc/guides/nics/mlx4.rst b/doc/guides/nics/mlx4.rst
index d5bf2b3..8c656d3 100644 (file)
--- 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
@@ -88,7 +88,6 @@ Features
 - 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
@@ -98,8 +97,6 @@ Limitations
 - 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
 -------------
@@ -119,12 +116,13 @@ These options can be modified in the ``.config`` file.
   adds additional run-time checks and debugging messages at the cost of
   lower performance.
 
-- ``CONFIG_RTE_LIBRTE_MLX4_SGE_WR_N`` (default **4**)
+- ``CONFIG_RTE_LIBRTE_MLX4_DEBUG_BROKEN_VERBS`` (default **n**)
 
-  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.
+  Mellanox OFED versions earlier than 4.2 may return false errors from
+  Verbs object destruction APIs after the device is plugged out.
+  Enabling this option replaces assertion checks that cause the program
+  to abort with harmless debugging messages as a workaround.
+  Relevant only when CONFIG_RTE_LIBRTE_MLX4_DEBUG is enabled.
 
 - ``CONFIG_RTE_LIBRTE_MLX4_MAX_INLINE`` (default **0**)
 
@@ -139,11 +137,6 @@ 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
 ~~~~~~~~~~~~~~~~~~~~~