vasilito
dc68054305
- Restore 29 recipe symlinks (libdrm, qtbase, dbus, sddm, pipewire, etc.) - Restore 33 patches (KDE, libdrm, mesa, pipewire, sddm, wireplumber) - Restore 20+ local/scripts (audit, lint, test, build helpers) - Restore src/cook/scheduler.rs, status.rs, gnu-config/ - Restore scripts/patch-inclusion-gate.sh, run_mini1.sh, validate-collision-log.sh - Recover TLC source from HEAD (was overwritten by 0.2.3 checkout) - Recover 11 local/docs plans from HEAD (were overwritten) - Recover qt6-wayland-smoke symlink from HEAD - Fix MOTD: remove garbled ASCII art, use clean text - Update version: 0.2.0 -> 0.2.4 in os-release, motd, config - Reduce filesystem_size: 1536 -> 512 MiB - Add ABSOLUTE RULE to AGENTS.md: never delete/ignore packages - Reduce pcid scheme log verbosity: info -> debug
116 lines
3.2 KiB
C
116 lines
3.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Generic HDLC support routines for Linux
|
|
*
|
|
* Copyright (C) 1999-2005 Krzysztof Halasa <khc@pm.waw.pl>
|
|
*/
|
|
#ifndef __HDLC_H
|
|
#define __HDLC_H
|
|
|
|
|
|
#include <linux/skbuff.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/hdlc/ioctl.h>
|
|
#include <uapi/linux/hdlc.h>
|
|
|
|
/* This structure is a private property of HDLC protocols.
|
|
Hardware drivers have no interest here */
|
|
|
|
struct hdlc_proto {
|
|
int (*open)(struct net_device *dev);
|
|
void (*close)(struct net_device *dev);
|
|
void (*start)(struct net_device *dev); /* if open & DCD */
|
|
void (*stop)(struct net_device *dev); /* if open & !DCD */
|
|
void (*detach)(struct net_device *dev);
|
|
int (*ioctl)(struct net_device *dev, struct if_settings *ifs);
|
|
__be16 (*type_trans)(struct sk_buff *skb, struct net_device *dev);
|
|
int (*netif_rx)(struct sk_buff *skb);
|
|
netdev_tx_t (*xmit)(struct sk_buff *skb, struct net_device *dev);
|
|
struct module *module;
|
|
struct hdlc_proto *next; /* next protocol in the list */
|
|
};
|
|
|
|
|
|
/* Pointed to by netdev_priv(dev) */
|
|
typedef struct hdlc_device {
|
|
/* used by HDLC layer to take control over HDLC device from hw driver*/
|
|
int (*attach)(struct net_device *dev,
|
|
unsigned short encoding, unsigned short parity);
|
|
|
|
/* hardware driver must handle this instead of dev->hard_start_xmit */
|
|
netdev_tx_t (*xmit)(struct sk_buff *skb, struct net_device *dev);
|
|
|
|
/* Things below are for HDLC layer internal use only */
|
|
const struct hdlc_proto *proto;
|
|
int carrier;
|
|
int open;
|
|
spinlock_t state_lock;
|
|
void *state;
|
|
void *priv;
|
|
} hdlc_device;
|
|
|
|
|
|
|
|
/* Exported from hdlc module */
|
|
|
|
/* Called by hardware driver when a user requests HDLC service */
|
|
int hdlc_ioctl(struct net_device *dev, struct if_settings *ifs);
|
|
|
|
/* Must be used by hardware driver on module startup/exit */
|
|
#define register_hdlc_device(dev) register_netdev(dev)
|
|
void unregister_hdlc_device(struct net_device *dev);
|
|
|
|
|
|
void register_hdlc_protocol(struct hdlc_proto *proto);
|
|
void unregister_hdlc_protocol(struct hdlc_proto *proto);
|
|
|
|
struct net_device *alloc_hdlcdev(void *priv);
|
|
|
|
static inline struct hdlc_device* dev_to_hdlc(struct net_device *dev)
|
|
{
|
|
return netdev_priv(dev);
|
|
}
|
|
|
|
static __inline__ void debug_frame(const struct sk_buff *skb)
|
|
{
|
|
int i;
|
|
|
|
for (i=0; i < skb->len; i++) {
|
|
if (i == 100) {
|
|
printk("...\n");
|
|
return;
|
|
}
|
|
printk(" %02X", skb->data[i]);
|
|
}
|
|
printk("\n");
|
|
}
|
|
|
|
|
|
/* Must be called by hardware driver when HDLC device is being opened */
|
|
int hdlc_open(struct net_device *dev);
|
|
/* Must be called by hardware driver when HDLC device is being closed */
|
|
void hdlc_close(struct net_device *dev);
|
|
/* Must be pointed to by hw driver's dev->netdev_ops->ndo_start_xmit */
|
|
netdev_tx_t hdlc_start_xmit(struct sk_buff *skb, struct net_device *dev);
|
|
|
|
int attach_hdlc_protocol(struct net_device *dev, struct hdlc_proto *proto,
|
|
size_t size);
|
|
/* May be used by hardware driver to gain control over HDLC device */
|
|
int detach_hdlc_protocol(struct net_device *dev);
|
|
|
|
static __inline__ __be16 hdlc_type_trans(struct sk_buff *skb,
|
|
struct net_device *dev)
|
|
{
|
|
hdlc_device *hdlc = dev_to_hdlc(dev);
|
|
|
|
skb->dev = dev;
|
|
skb_reset_mac_header(skb);
|
|
|
|
if (hdlc->proto->type_trans)
|
|
return hdlc->proto->type_trans(skb, dev);
|
|
else
|
|
return htons(ETH_P_HDLC);
|
|
}
|
|
|
|
#endif /* __HDLC_H */
|