[PATCH NET-NEXT 08/12] igb: stub support for SIOCSHWTSTAMP

[Patrick Ohly]

---
 drivers/net/igb/igb_main.c |   30 ++++++++++++++++++++++++++++++
 1 files changed, 30 insertions(+), 0 deletions(-)

diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index 022794e..d26dacb 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -34,6 +34,7 @@
 #include <linux/ipv6.h>
 #include <net/checksum.h>
 #include <net/ip6_checksum.h>
+#include <linux/net_tstamp.h>
 #include <linux/mii.h>
 #include <linux/ethtool.h>
 #include <linux/if_vlan.h>
@@ -4146,6 +4147,33 @@ static int igb_mii_ioctl(struct net_device *netdev, 
struct ifreq *ifr, int cmd)
 }
 
 /**
+ * igb_hwtstamp_ioctl - control hardware time stamping
+ * @netdev:
+ * @ifreq:
+ * @cmd:
+ *
+ * Currently cannot enable any kind of hardware time stamping, but
+ * supports SIOCSHWTSTAMP in general.
+ **/
+static int igb_hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr, 
int cmd)
+{
+       struct hwtstamp_config config;
+
+       if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
+               return -EFAULT;
+
+       /* reserved for future extensions */
+       if (config.flags)
+               return -EINVAL;
+
+       if (config.tx_type == HWTSTAMP_TX_OFF &&
+               config.rx_filter == HWTSTAMP_FILTER_NONE)
+               return 0;
+
+       return -ERANGE;
+}
+
+/**
  * igb_ioctl -
  * @netdev:
  * @ifreq:
@@ -4158,6 +4186,8 @@ static int igb_ioctl(struct net_device *netdev, struct 
ifreq *ifr, int cmd)
        case SIOCGMIIREG:
        case SIOCSMIIREG:
                return igb_mii_ioctl(netdev, ifr, cmd);
+       case SIOCSHWTSTAMP:
+               return igb_hwtstamp_ioctl(netdev, ifr, cmd);
        default:
                return -EOPNOTSUPP;
        }
-- 
1.5.5.3

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