[PATCH 02/10] ieee802154: avoid deprecated .ndo_do_ioctl callback

From: Arnd Bergmann
Date: Mon Oct 09 2023 - 10:19:35 EST


From: Arnd Bergmann <arnd@xxxxxxxx>

The ieee802154 socket implementation is the last remaining caller of the
netdevice ioctl callback. In order to completely remove this, add a custom
pointer to the existing wpan_dev specific operations structure. Since that
structure is currently only used to wrap the 'create' header operation,
adjust the naming slightly to make this more generic.

It would be a good idea to adjust the calling conventions and split the
get/set operations into separate functions, but that can be a follow-up
cleanup. For the moment, I kept the actual changes to a minimum to
avoid regressions.

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
include/net/cfg802154.h | 9 +++++----
net/ieee802154/socket.c | 5 +++--
net/mac802154/iface.c | 8 ++++----
3 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/include/net/cfg802154.h b/include/net/cfg802154.h
index f79ce133e51a7..e604df98e2ee9 100644
--- a/include/net/cfg802154.h
+++ b/include/net/cfg802154.h
@@ -433,15 +433,16 @@ struct ieee802154_llsec_device_key {
u32 frame_counter;
};

-struct wpan_dev_header_ops {
+struct wpan_dev_ops {
/* TODO create callback currently assumes ieee802154_mac_cb inside
* skb->cb. This should be changed to give these information as
* parameter.
*/
- int (*create)(struct sk_buff *skb, struct net_device *dev,
+ int (*header_create)(struct sk_buff *skb, struct net_device *dev,
const struct ieee802154_addr *daddr,
const struct ieee802154_addr *saddr,
unsigned int len);
+ int (*ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd);
};

struct wpan_dev {
@@ -452,7 +453,7 @@ struct wpan_dev {
struct list_head list;
struct net_device *netdev;

- const struct wpan_dev_header_ops *header_ops;
+ const struct wpan_dev_ops *ops;

/* lowpan interface, set when the wpan_dev belongs to one lowpan_dev */
struct net_device *lowpan_dev;
@@ -491,7 +492,7 @@ wpan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
{
struct wpan_dev *wpan_dev = dev->ieee802154_ptr;

- return wpan_dev->header_ops->create(skb, dev, daddr, saddr, len);
+ return wpan_dev->ops->header_create(skb, dev, daddr, saddr, len);
}
#endif

diff --git a/net/ieee802154/socket.c b/net/ieee802154/socket.c
index 00302e8b9615b..27e58237091ca 100644
--- a/net/ieee802154/socket.c
+++ b/net/ieee802154/socket.c
@@ -139,8 +139,9 @@ static int ieee802154_dev_ioctl(struct sock *sk, struct ifreq __user *arg,
if (!dev)
return -ENODEV;

- if (dev->type == ARPHRD_IEEE802154 && dev->netdev_ops->ndo_do_ioctl)
- ret = dev->netdev_ops->ndo_do_ioctl(dev, &ifr, cmd);
+ if (dev->type == ARPHRD_IEEE802154 && dev->ieee802154_ptr &&
+ dev->ieee802154_ptr->ops)
+ ret = dev->ieee802154_ptr->ops->ioctl(dev, &ifr, cmd);

if (!ret && put_user_ifreq(&ifr, arg))
ret = -EFAULT;
diff --git a/net/mac802154/iface.c b/net/mac802154/iface.c
index c0e2da5072bea..4937f8c2fb4cc 100644
--- a/net/mac802154/iface.c
+++ b/net/mac802154/iface.c
@@ -406,8 +406,9 @@ static int ieee802154_header_create(struct sk_buff *skb,
return hlen;
}

-static const struct wpan_dev_header_ops ieee802154_header_ops = {
- .create = ieee802154_header_create,
+static const struct wpan_dev_ops ieee802154_ops = {
+ .header_create = ieee802154_header_create,
+ .ioctl = mac802154_wpan_ioctl,
};

/* This header create functionality assumes a 8 byte array for
@@ -495,7 +496,6 @@ static const struct net_device_ops mac802154_wpan_ops = {
.ndo_open = mac802154_wpan_open,
.ndo_stop = mac802154_slave_close,
.ndo_start_xmit = ieee802154_subif_start_xmit,
- .ndo_do_ioctl = mac802154_wpan_ioctl,
.ndo_set_mac_address = mac802154_wpan_mac_addr,
};

@@ -581,7 +581,7 @@ ieee802154_setup_sdata(struct ieee802154_sub_if_data *sdata,
sdata->dev->netdev_ops = &mac802154_wpan_ops;
sdata->dev->ml_priv = &mac802154_mlme_wpan;
sdata->iface_default_filtering = IEEE802154_FILTERING_4_FRAME_FIELDS;
- wpan_dev->header_ops = &ieee802154_header_ops;
+ wpan_dev->ops = &ieee802154_ops;

mutex_init(&sdata->sec_mtx);

--
2.39.2