Author: emaste
Date: Wed Aug 8 15:27:01 2012
New Revision: 239140
URL: http://svn.freebsd.org/changeset/base/239140
Log:
Clarify comments about number of tx / rx rings
Modified:
head/sys/dev/netmap/netmap.c
head/sys/dev/netmap/netmap_kern.h
Modified: head/sys/dev/netmap/netmap.c
==============================================================================
--- head/sys/dev/netmap/netmap.c Wed Aug 8 13:54:26 2012
(r239139)
+++ head/sys/dev/netmap/netmap.c Wed Aug 8 15:27:01 2012
(r239140)
@@ -1282,7 +1282,8 @@ netmap_lock_wrapper(struct ifnet *dev, i
* 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: head/sys/dev/netmap/netmap_kern.h
==============================================================================
--- head/sys/dev/netmap/netmap_kern.h Wed Aug 8 13:54:26 2012
(r239139)
+++ head/sys/dev/netmap/netmap_kern.h Wed Aug 8 15:27:01 2012
(r239140)
@@ -144,8 +144,8 @@ struct netmap_adapter {
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;
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