netdev - [PATCH net-next] vlan: Pass ethtool get_ts

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 21 Nov 2014 14:16:20 +0100
From:	Richard Cochran <richardcochran@...il.com>
To:	<netdev@...r.kernel.org>
Cc:	David Miller <davem@...emloft.net>,
	Stefan Sørensen 
	<stefan.sorensen@...ctralink.com>
Subject: [PATCH net-next] vlan: Pass ethtool get_ts_info queries to real device.

Commit a6111d3c "vlan: Pass SIOC[SG]HWTSTAMP ioctls to real device"
intended to enable hardware time stamping on VLAN interfaces, but
passing SIOCSHWTSTAMP is only half of the story. This patch adds
the second half, by letting user space find out the time stamping
capabilities of the device backing a VLAN interface.

Signed-off-by: Richard Cochran <richardcochran@...il.com>
---
 net/8021q/vlan_dev.c |   19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 0d441ec..960aeb8 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -26,6 +26,7 @@
 #include <linux/slab.h>
 #include <linux/skbuff.h>
 #include <linux/netdevice.h>
+#include <linux/net_tstamp.h>
 #include <linux/etherdevice.h>
 #include <linux/ethtool.h>
 #include <net/arp.h>
@@ -669,6 +670,23 @@ static void vlan_ethtool_get_drvinfo(struct net_device *dev,
 	strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
 }
 
+static int vlan_ethtool_get_ts_info(struct net_device *dev,
+				    struct ethtool_ts_info *info)
+{
+	const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+	const struct ethtool_ops *ops = vlan->real_dev->ethtool_ops;
+
+	if (ops->get_ts_info) {
+		return ops->get_ts_info(vlan->real_dev, info);
+	} else {
+		info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
+			SOF_TIMESTAMPING_SOFTWARE;
+		info->phc_index = -1;
+	}
+
+	return 0;
+}
+
 static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
 {
 	struct vlan_pcpu_stats *p;
@@ -752,6 +770,7 @@ static const struct ethtool_ops vlan_ethtool_ops = {
 	.get_settings	        = vlan_ethtool_get_settings,
 	.get_drvinfo	        = vlan_ethtool_get_drvinfo,
 	.get_link		= ethtool_op_get_link,
+	.get_ts_info		= vlan_ethtool_get_ts_info,
 };
 
 static const struct net_device_ops vlan_netdev_ops = {
-- 
1.7.10.4

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html