svn commit: r341783 - head/sys/dev/sfxge/common

[Andrew Rybchenko]

Author: arybchik
Date: Mon Dec 10 09:35:45 2018
New Revision: 341783
URL: https://svnweb.freebsd.org/changeset/base/341783

Log:
  sfxge(4): report support for Tx checksum op descriptors
  
  FreeBSD driver needs a patch to provide a means for packets
  which do not need checksum offload but have flow ID set
  to avoid hitting only the first Tx queue (which has been used
  for packets not needing checksum offload).
  
  This should be possible on Huntington, Medford or Medford2 chips
  since these support toggling checksum offload on any given queue
  dynamically by means of pushing option descriptors.
  
  The patch for FreeBSD driver will then need a means to figure out
  whether the feature can be used, and testing adapter family might
  not be a good solution.
  
  This patch adds a feature bit specifically to indicate support
  for checksum option descriptors. The new feature bits may have
  more users in future, apart from the mentioned FreeBSD patch.
  
  Submitted by:   Ivan Malov <Ivan.Malov at oktetlabs.ru>
  Sponsored by:   Solarflare Communications, Inc.
  MFC after:      1 week
  Differential Revision:  https://reviews.freebsd.org/D18388

Modified:
  head/sys/dev/sfxge/common/efx.h
  head/sys/dev/sfxge/common/efx_nic.c

Modified: head/sys/dev/sfxge/common/efx.h
==============================================================================
--- head/sys/dev/sfxge/common/efx.h	Mon Dec 10 09:35:33 2018	(r341782)
+++ head/sys/dev/sfxge/common/efx.h	Mon Dec 10 09:35:45 2018	(r341783)
@@ -1261,6 +1261,7 @@ efx_bist_stop(
 #define	EFX_FEATURE_FW_ASSISTED_TSO	0x00001000
 #define	EFX_FEATURE_FW_ASSISTED_TSO_V2	0x00002000
 #define	EFX_FEATURE_PACKED_STREAM	0x00004000
+#define	EFX_FEATURE_TXQ_CKSUM_OP_DESC	0x00008000
 
 typedef enum efx_tunnel_protocol_e {
 	EFX_TUNNEL_PROTOCOL_NONE = 0,

Modified: head/sys/dev/sfxge/common/efx_nic.c
==============================================================================
--- head/sys/dev/sfxge/common/efx_nic.c	Mon Dec 10 09:35:33 2018	(r341782)
+++ head/sys/dev/sfxge/common/efx_nic.c	Mon Dec 10 09:35:45 2018	(r341783)
@@ -257,7 +257,8 @@ efx_nic_create(
 		    EFX_FEATURE_PIO_BUFFERS |
 		    EFX_FEATURE_FW_ASSISTED_TSO |
 		    EFX_FEATURE_FW_ASSISTED_TSO_V2 |
-		    EFX_FEATURE_PACKED_STREAM;
+		    EFX_FEATURE_PACKED_STREAM |
+		    EFX_FEATURE_TXQ_CKSUM_OP_DESC;
 		break;
 #endif	/* EFSYS_OPT_HUNTINGTON */
 
@@ -277,7 +278,8 @@ efx_nic_create(
 		    EFX_FEATURE_MCDI_DMA |
 		    EFX_FEATURE_PIO_BUFFERS |
 		    EFX_FEATURE_FW_ASSISTED_TSO_V2 |
-		    EFX_FEATURE_PACKED_STREAM;
+		    EFX_FEATURE_PACKED_STREAM |
+		    EFX_FEATURE_TXQ_CKSUM_OP_DESC;
 		break;
 #endif	/* EFSYS_OPT_MEDFORD */
 
@@ -293,7 +295,8 @@ efx_nic_create(
 		    EFX_FEATURE_MCDI_DMA |
 		    EFX_FEATURE_PIO_BUFFERS |
 		    EFX_FEATURE_FW_ASSISTED_TSO_V2 |
-		    EFX_FEATURE_PACKED_STREAM;
+		    EFX_FEATURE_PACKED_STREAM |
+		    EFX_FEATURE_TXQ_CKSUM_OP_DESC;
 		break;
 #endif	/* EFSYS_OPT_MEDFORD2 */