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LinuxKPI: add (skeleton) functions to make drivers compile

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Add more functions to netdevice.h (netif_napi_add_tx() being the only
one implemented) and add platform_device.h and netlink.h in order to
make driver code compile.
The skeleton functions are used only in very limited scope and not at
all in our usage so far but add (invasive) #ifdef if removed.
Add pr_debug() calls to each of them in order to log a TODO (if DEBUG
compiled in) and someone should hit them in the future.

MFC after:	3 days
Commented on by: hselasky (earlier version)
Differential Revision: https://reviews.freebsd.org/D37599
This commit is contained in:
Bjoern A. Zeeb 2022-12-03 23:00:04 +00:00
parent f82cf28b31
commit 75388b9ca5
3 changed files with 264 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

132
sys/compat/linuxkpi/common/include/linux/netdevice.h
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@ -53,6 +53,7 @@
#include <net/if_var.h>
#include <net/if_dl.h>
#include <linux/kernel.h>
#include <linux/bitops.h>
#include <linux/list.h>
#include <linux/device.h>
@ -134,6 +135,7 @@ struct net_device {
/* Not properly typed as-of now. */
int flags, type;
int name_assign_type, needed_headroom;
int threaded;
void (*priv_destructor)(struct net_device *);
@ -266,6 +268,15 @@ void linuxkpi_napi_synchronize(struct napi_struct *);
#define napi_synchronize(_n) \
linuxkpi_napi_synchronize(_n)
static inline void
netif_napi_add_tx(struct net_device *dev, struct napi_struct *napi,
int(*napi_poll)(struct napi_struct *, int))
{
netif_napi_add(dev, napi, napi_poll);
}
/* -------------------------------------------------------------------------- */
static inline void
@ -308,6 +319,126 @@ synchronize_net(void)
synchronize_rcu();
}
static __inline void
netif_receive_skb_list(struct list_head *head)
{
pr_debug("%s: TODO\n", __func__);
}
static __inline int
napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb)
{
pr_debug("%s: TODO\n", __func__);
return (-1);
}
static __inline void
ether_setup(struct net_device *ndev)
{
pr_debug("%s: TODO\n", __func__);
}
static __inline void
dev_net_set(struct net_device *dev, void *p)
{
pr_debug("%s: TODO\n", __func__);
}
/* -------------------------------------------------------------------------- */
static __inline bool
netif_carrier_ok(struct net_device *ndev)
{
pr_debug("%s: TODO\n", __func__);
return (false);
}
static __inline void
netif_carrier_off(struct net_device *ndev)
{
pr_debug("%s: TODO\n", __func__);
}
static __inline void
netif_carrier_on(struct net_device *ndev)
{
pr_debug("%s: TODO\n", __func__);
}
/* -------------------------------------------------------------------------- */
static __inline bool
netif_queue_stopped(struct net_device *ndev)
{
pr_debug("%s: TODO\n", __func__);
return (false);
}
static __inline void
netif_stop_queue(struct net_device *ndev)
{
pr_debug("%s: TODO\n", __func__);
}
static __inline void
netif_wake_queue(struct net_device *ndev)
{
pr_debug("%s: TODO\n", __func__);
}
/* -------------------------------------------------------------------------- */
static __inline int
register_netdevice(struct net_device *ndev)
{
/* assert rtnl_locked? */
pr_debug("%s: TODO\n", __func__);
return (0);
}
static __inline int
register_netdev(struct net_device *ndev)
{
int error;
/* lock */
error = register_netdevice(ndev);
/* unlock */
pr_debug("%s: TODO\n", __func__);
return (error);
}
static __inline void
unregister_netdev(struct net_device *ndev)
{
pr_debug("%s: TODO\n", __func__);
}
static __inline void
unregister_netdevice(struct net_device *ndev)
{
pr_debug("%s: TODO\n", __func__);
}
/* -------------------------------------------------------------------------- */
static __inline void
netif_rx(struct sk_buff *skb)
{
pr_debug("%s: TODO\n", __func__);
}
static __inline void
netif_rx_ni(struct sk_buff *skb)
{
pr_debug("%s: TODO\n", __func__);
}
/* -------------------------------------------------------------------------- */
struct net_device *linuxkpi_alloc_netdev(size_t, const char *, uint32_t,
@ -331,5 +462,6 @@ netdev_priv(const struct net_device *ndev)
#define rtnl_lock() do { } while(0)
#define rtnl_unlock() do { } while(0)
#define rcu_dereference_rtnl(x) READ_ONCE(x)
#endif /* _LINUXKPI_LINUX_NETDEVICE_H */

79
sys/compat/linuxkpi/common/include/linux/platform_device.h Normal file
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@ -0,0 +1,79 @@
/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2020-2022 Bjoern A. Zeeb
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _LINUXKPI_LINUX_PLATFORM_DEVICE_H
#define _LINUXKPI_LINUX_PLATFORM_DEVICE_H
#include <linux/kernel.h>
#include <linux/device.h>
struct platform_device {
struct device dev;
};
struct platform_driver {
int (*remove)(struct platform_device *);
struct device_driver driver;
};
static __inline int
platform_driver_register(struct platform_driver *pdrv)
{
pr_debug("%s: TODO\n", __func__);
return (-ENXIO);
}
static __inline void *
dev_get_platdata(struct device *dev)
{
pr_debug("%s: TODO\n", __func__);
return (NULL);
}
static __inline int
platform_driver_probe(struct platform_driver *pdrv,
int(*pd_probe_f)(struct platform_device *))
{
pr_debug("%s: TODO\n", __func__);
return (-ENODEV);
}
static __inline void
platform_driver_unregister(struct platform_driver *pdrv)
{
pr_debug("%s: TODO\n", __func__);
return;
}
#endif /* _LINUXKPI_LINUX_PLATFORM_DEVICE_H */

53
sys/compat/linuxkpi/common/include/net/netlink.h Normal file
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@ -0,0 +1,53 @@
/*-
* Copyright (c) 2020,2022 Bjoern A. Zeeb
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _LINUXKPI_NET_NETLINK_H
#define _LINUXKPI_NET_NETLINK_H
#include <netlink/netlink.h>
struct nla_policy {
};
struct netlink_callback {
int args[8];
};
static __inline int
nla_put(struct sk_buff *skb, int attr, size_t len, void *data)
{
pr_debug("%s: TODO -- now native?\n", __func__);
return (-ENXIO);
}
static __inline int
nla_put_u16(struct sk_buff *skb, int attr, uint32_t val)
{
return (nla_put(skb, attr, sizeof(uint32_t), &val));
}
#endif /* _LINUXKPI_NET_NETLINK_H */