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Message-Id: <20230423032835.285406-1-glipus@gmail.com>
Date: Sat, 22 Apr 2023 21:28:35 -0600
From: Maxim Georgiev <glipus@...il.com>
To: kory.maincent@...tlin.com
Cc: kuba@...nel.org, netdev@...r.kernel.org, glipus@...il.com,
maxime.chevallier@...tlin.com, vladimir.oltean@....com,
vadim.fedorenko@...ux.dev, richardcochran@...il.com,
gerhard@...leder-embedded.com
Subject: [RFC PATCH v4 3/5] Add ndo_hwtstamp_get/set support to vlan/maxvlan code path
This patch makes VLAN and MAXVLAN drivers to use the newly
introduced ndo_hwtstamp_get/set API to pass hw timestamp
requests to underlying NIC drivers in case if these drivers
implement ndo_hwtstamp_get/set functions. Otherwise VLAN
subsystems falls back to calling ndo_eth_ioctl.
Suggested-by: Vladimir Oltean <vladimir.oltean@....com>
Signed-off-by: Maxim Georgiev <glipus@...il.com>
---
Notes:
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.
- Applay the same changes to macvlan driver.
---
drivers/net/macvlan.c | 34 +++++++++++++---------------------
net/8021q/vlan_dev.c | 25 ++++++++++++++++++++-----
2 files changed, 33 insertions(+), 26 deletions(-)
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index 4a53debf9d7c..32683d859f5f 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -868,31 +868,22 @@ static int macvlan_change_mtu(struct net_device *dev, int new_mtu)
return 0;
}
-static int macvlan_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+static int macvlan_hwtstamp_get(struct net_device *dev,
+ struct kernel_hwtstamp_config *cfg,
+ struct netlink_ext_ack *extack)
{
struct net_device *real_dev = macvlan_dev_real_dev(dev);
- const struct net_device_ops *ops = real_dev->netdev_ops;
- struct ifreq ifrr;
- int err = -EOPNOTSUPP;
- strscpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ);
- ifrr.ifr_ifru = ifr->ifr_ifru;
-
- switch (cmd) {
- case SIOCSHWTSTAMP:
- if (!net_eq(dev_net(dev), &init_net))
- break;
- fallthrough;
- case SIOCGHWTSTAMP:
- if (netif_device_present(real_dev) && ops->ndo_eth_ioctl)
- err = ops->ndo_eth_ioctl(real_dev, &ifrr, cmd);
- break;
- }
+ return generic_hwtstamp_get_lower(real_dev, cfg, extack);
+}
- if (!err)
- ifr->ifr_ifru = ifrr.ifr_ifru;
+static int macvlan_hwtstamp_set(struct net_device *dev,
+ struct kernel_hwtstamp_config *cfg,
+ struct netlink_ext_ack *extack)
+{
+ struct net_device *real_dev = macvlan_dev_real_dev(dev);
- return err;
+ return generic_hwtstamp_set_lower(real_dev, cfg, extack);
}
/*
@@ -1193,7 +1184,6 @@ static const struct net_device_ops macvlan_netdev_ops = {
.ndo_stop = macvlan_stop,
.ndo_start_xmit = macvlan_start_xmit,
.ndo_change_mtu = macvlan_change_mtu,
- .ndo_eth_ioctl = macvlan_eth_ioctl,
.ndo_fix_features = macvlan_fix_features,
.ndo_change_rx_flags = macvlan_change_rx_flags,
.ndo_set_mac_address = macvlan_set_mac_address,
@@ -1212,6 +1202,8 @@ static const struct net_device_ops macvlan_netdev_ops = {
#endif
.ndo_get_iflink = macvlan_dev_get_iflink,
.ndo_features_check = passthru_features_check,
+ .ndo_hwtstamp_get = macvlan_hwtstamp_get,
+ .ndo_hwtstamp_set = macvlan_hwtstamp_set,
};
static void macvlan_dev_free(struct net_device *dev)
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 5920544e93e8..38a31dca3bb9 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -353,6 +353,24 @@ 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 netlink_ext_ack *extack)
+{
+ struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
+
+ return generic_hwtstamp_get_lower(real_dev, cfg, extack);
+}
+
+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;
+
+ 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;
@@ -364,14 +382,9 @@ 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;
@@ -842,6 +855,8 @@ 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)
--
2.39.2
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