[Midnightbsd-cvs] src [8428] trunk/sys/dev/netmap: clarify comments.

[laffer1 at midnightbsd.org]

Revision: 8428
          http://svnweb.midnightbsd.org/src/?rev=8428
Author:   laffer1
Date:     2016-09-18 17:12:34 -0400 (Sun, 18 Sep 2016)
Log Message:
-----------
clarify comments. fix ws

Modified Paths:
--------------
    trunk/sys/dev/netmap/netmap.c
    trunk/sys/dev/netmap/netmap_kern.h

Modified: trunk/sys/dev/netmap/netmap.c
===================================================================
--- trunk/sys/dev/netmap/netmap.c	2016-09-18 21:11:33 UTC (rev 8427)
+++ trunk/sys/dev/netmap/netmap.c	2016-09-18 21:12:34 UTC (rev 8428)
@@ -976,7 +976,9 @@
  * kring	N+1	is only used for the selinfo for all queues.
  * Return 0 on success, ENOMEM otherwise.
  *
- * na->num_tx_rings can be set for cards with different tx/rx setups
+ * By default the receive and transmit adapter ring counts are both initialized
+ * to num_queues.  na->num_tx_rings can be set for cards with different tx/rx
+ * setups.
  */
 int
 netmap_attach(struct netmap_adapter *na, int num_queues)

Modified: trunk/sys/dev/netmap/netmap_kern.h
===================================================================
--- trunk/sys/dev/netmap/netmap_kern.h	2016-09-18 21:11:33 UTC (rev 8427)
+++ trunk/sys/dev/netmap/netmap_kern.h	2016-09-18 21:12:34 UTC (rev 8428)
@@ -118,8 +118,8 @@
 	int separate_locks; /* set if the interface suports different
 			       locks for rx, tx and core. */
 
-	u_int num_rx_rings; /* number of tx/rx ring pairs */
-	u_int num_tx_rings; // if nonzero, overrides num_rx_rings
+	u_int num_rx_rings; /* number of adapter receive rings */
+	u_int num_tx_rings; /* number of adapter transmit rings */
 
 	u_int num_tx_desc; /* number of descriptor in each queue */
 	u_int num_rx_desc;