diff mbox series

[v7,net-next,03/10] net: vlan: convert to ndo_hwtstamp_get() / ndo_hwtstamp_set()

Message ID 20230713121907.3249291-4-vladimir.oltean@nxp.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series Introduce ndo_hwtstamp_get() and ndo_hwtstamp_set() | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next, async
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1341 this patch: 1341
netdev/cc_maintainers warning 1 maintainers not CCed: ehakim@nvidia.com
netdev/build_clang success Errors and warnings before: 1364 this patch: 1364
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1364 this patch: 1364
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 48 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Vladimir Oltean July 13, 2023, 12:19 p.m. UTC 
From: Maxim Georgiev <glipus@gmail.com>

8021q is one of the stackable net devices which pass the hardware
timestamping ops to the real device through ndo_eth_ioctl(). This
prevents converting any device driver to the new hwtimestamping API
without regressions.

Remove that limitation in the vlan driver by using the newly introduced
helpers for timestamping through lower devices, that handle both the new
and the old driver API.

Signed-off-by: Maxim Georgiev <glipus@gmail.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---
Changes in v7:
- Split vlan and macvlan to separate patches
- Reword commit message
Changes in v6:
- Patch title was updated. No code changes.
Changes in v5:
- Re-introduced the net namespace check which
  was dropped in v4.
Changes in v4:
- Moved hw timestamp get/set request processing logic
  from vlan_dev_ioctl() to .ndo_hwtstamp_get/set callbacks.
- Use the shared generic_hwtstamp_get/set_lower() functions
  to handle ndo_hwtstamp_get/set requests.
- Apply the same changes to macvlan driver.

 net/8021q/vlan_dev.c | 27 ++++++++++++++++++++++-----
 1 file changed, 22 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index b90781b9ece6..2a7f1b15714a 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -354,6 +354,26 @@  static int vlan_dev_set_mac_address(struct net_device *dev, void *p)
 	return 0;
 }
 
+static int vlan_hwtstamp_get(struct net_device *dev,
+			     struct kernel_hwtstamp_config *cfg)
+{
+	struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
+
+	return generic_hwtstamp_get_lower(real_dev, cfg);
+}
+
+static int vlan_hwtstamp_set(struct net_device *dev,
+			     struct kernel_hwtstamp_config *cfg,
+			     struct netlink_ext_ack *extack)
+{
+	struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
+
+	if (!net_eq(dev_net(dev), dev_net(real_dev)))
+		return -EOPNOTSUPP;
+
+	return generic_hwtstamp_set_lower(real_dev, cfg, extack);
+}
+
 static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 {
 	struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
@@ -365,14 +385,9 @@  static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 	ifrr.ifr_ifru = ifr->ifr_ifru;
 
 	switch (cmd) {
-	case SIOCSHWTSTAMP:
-		if (!net_eq(dev_net(dev), dev_net(real_dev)))
-			break;
-		fallthrough;
 	case SIOCGMIIPHY:
 	case SIOCGMIIREG:
 	case SIOCSMIIREG:
-	case SIOCGHWTSTAMP:
 		if (netif_device_present(real_dev) && ops->ndo_eth_ioctl)
 			err = ops->ndo_eth_ioctl(real_dev, &ifrr, cmd);
 		break;
@@ -1081,6 +1096,8 @@  static const struct net_device_ops vlan_netdev_ops = {
 	.ndo_fix_features	= vlan_dev_fix_features,
 	.ndo_get_iflink		= vlan_dev_get_iflink,
 	.ndo_fill_forward_path	= vlan_dev_fill_forward_path,
+	.ndo_hwtstamp_get	= vlan_hwtstamp_get,
+	.ndo_hwtstamp_set	= vlan_hwtstamp_set,
 };
 
 static void vlan_dev_free(struct net_device *dev)