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From: Navdeep Parhar <np@FreeBSD.org>
Date: Wed, 10 Oct 2012 19:27:40 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r241409 - head/sys/dev/cxgbe
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Author: np
Date: Wed Oct 10 19:27:40 2012
New Revision: 241409
URL: http://svn.freebsd.org/changeset/base/241409

Log:
  Add a driver ioctl to clear a port's MAC statistics.
  
  Submitted by:	gnn@
  MFC after:	3 days

Modified:
  head/sys/dev/cxgbe/t4_ioctl.h
  head/sys/dev/cxgbe/t4_main.c

Modified: head/sys/dev/cxgbe/t4_ioctl.h
==============================================================================
--- head/sys/dev/cxgbe/t4_ioctl.h	Wed Oct 10 19:08:46 2012	(r241408)
+++ head/sys/dev/cxgbe/t4_ioctl.h	Wed Oct 10 19:27:40 2012	(r241409)
@@ -50,6 +50,7 @@ enum {
 	T4_LOAD_FW,			/* flash firmware */
 	T4_GET_MEM,			/* read memory */
 	T4_GET_I2C,			/* read from i2c addressible device */
+	T4_CLEAR_STATS,			/* clear a port's MAC statistics */
 };
 
 struct t4_reg {
@@ -234,4 +235,5 @@ struct t4_mem_range {
 #define CHELSIO_T4_LOAD_FW	_IOW('f', T4_LOAD_FW, struct t4_data)
 #define CHELSIO_T4_GET_MEM	_IOW('f', T4_GET_MEM, struct t4_mem_range)
 #define CHELSIO_T4_GET_I2C	_IOWR('f', T4_GET_I2C, struct t4_i2c_data)
+#define CHELSIO_T4_CLEAR_STATS	_IOW('f', T4_CLEAR_STATS, uint32_t)
 #endif

Modified: head/sys/dev/cxgbe/t4_main.c
==============================================================================
--- head/sys/dev/cxgbe/t4_main.c	Wed Oct 10 19:08:46 2012	(r241408)
+++ head/sys/dev/cxgbe/t4_main.c	Wed Oct 10 19:27:40 2012	(r241409)
@@ -5400,6 +5400,15 @@ t4_ioctl(struct cdev *dev, unsigned long
 		rc = read_i2c(sc, (struct t4_i2c_data *)data);
 		ADAPTER_UNLOCK(sc);
 		break;
+	case CHELSIO_T4_CLEAR_STATS: {
+		u_int port_id = *(uint32_t *)data;
+
+		if (port_id >= sc->params.nports)
+			return (EINVAL);
+
+		t4_clr_port_stats(sc, port_id);
+		break;
+	}
 	default:
 		rc = EINVAL;
 	}