svn commit: r340893 - head/sys/dev/sfxge/common

Andrew Rybchenko arybchik at FreeBSD.org
Sat Nov 24 16:31:12 UTC 2018


Author: arybchik
Date: Sat Nov 24 16:31:08 2018
New Revision: 340893
URL: https://svnweb.freebsd.org/changeset/base/340893

Log:
  sfxge(4): expand on comment on number of queues field
  
  Expand on comment on RSS_CONTEXT_ALLOC_IN_NUM_QUEUES field.
  
  Submitted by:   Mark Spender <mspender at solarflare.com>
  Sponsored by:   Solarflare Communications, Inc.
  Differential Revision:  https://reviews.freebsd.org/D18127

Modified:
  head/sys/dev/sfxge/common/ef10_rx.c

Modified: head/sys/dev/sfxge/common/ef10_rx.c
==============================================================================
--- head/sys/dev/sfxge/common/ef10_rx.c	Sat Nov 24 16:30:57 2018	(r340892)
+++ head/sys/dev/sfxge/common/ef10_rx.c	Sat Nov 24 16:31:08 2018	(r340893)
@@ -220,7 +220,13 @@ efx_mcdi_rss_context_alloc(
 	MCDI_IN_SET_DWORD(req, RSS_CONTEXT_ALLOC_IN_UPSTREAM_PORT_ID,
 	    EVB_PORT_ID_ASSIGNED);
 	MCDI_IN_SET_DWORD(req, RSS_CONTEXT_ALLOC_IN_TYPE, context_type);
-	/* NUM_QUEUES is only used to validate indirection table offsets */
+
+	/*
+	 * For exclusive contexts, NUM_QUEUES is only used to validate
+	 * indirection table offsets.
+	 * For shared contexts, the provided context will spread traffic over
+	 * NUM_QUEUES many queues.
+	 */
 	MCDI_IN_SET_DWORD(req, RSS_CONTEXT_ALLOC_IN_NUM_QUEUES, num_queues);
 
 	efx_mcdi_execute(enp, &req);


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