Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 258 insertions, 0 deletions

diff --git a/include/linux/hdlc.h b/include/linux/hdlc.h
new file mode 100644
index 000000000000..503194e62fe1
--- /dev/null
+++ b/include/linux/hdlc.h
@@ -0,0 +1,258 @@
+/*
+ * Generic HDLC support routines for Linux
+ *
+ * Copyright (C) 1999-2003 Krzysztof Halasa <khc@pm.waw.pl>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License
+ * as published by the Free Software Foundation.
+ */
+
+#ifndef __HDLC_H
+#define __HDLC_H
+
+#define GENERIC_HDLC_VERSION 4  /* For synchronization with sethdlc utility */
+
+#define CLOCK_DEFAULT   0       /* Default setting */
+#define CLOCK_EXT       1       /* External TX and RX clock - DTE */
+#define CLOCK_INT       2       /* Internal TX and RX clock - DCE */
+#define CLOCK_TXINT     3       /* Internal TX and external RX clock */
+#define CLOCK_TXFROMRX  4       /* TX clock derived from external RX clock */
+
+
+#define ENCODING_DEFAULT        0 /* Default setting */
+#define ENCODING_NRZ            1
+#define ENCODING_NRZI           2
+#define ENCODING_FM_MARK        3
+#define ENCODING_FM_SPACE       4
+#define ENCODING_MANCHESTER     5
+
+
+#define PARITY_DEFAULT          0 /* Default setting */
+#define PARITY_NONE             1 /* No parity */
+#define PARITY_CRC16_PR0        2 /* CRC16, initial value 0x0000 */
+#define PARITY_CRC16_PR1        3 /* CRC16, initial value 0xFFFF */
+#define PARITY_CRC16_PR0_CCITT  4 /* CRC16, initial 0x0000, ITU-T version */
+#define PARITY_CRC16_PR1_CCITT  5 /* CRC16, initial 0xFFFF, ITU-T version */
+#define PARITY_CRC32_PR0_CCITT  6 /* CRC32, initial value 0x00000000 */
+#define PARITY_CRC32_PR1_CCITT  7 /* CRC32, initial value 0xFFFFFFFF */
+
+#define LMI_DEFAULT             0 /* Default setting */
+#define LMI_NONE                1 /* No LMI, all PVCs are static */
+#define LMI_ANSI                2 /* ANSI Annex D */
+#define LMI_CCITT               3 /* ITU-T Annex A */
+
+#define HDLC_MAX_MTU 1500       /* Ethernet 1500 bytes */
+#define HDLC_MAX_MRU (HDLC_MAX_MTU + 10 + 14 + 4) /* for ETH+VLAN over FR */
+
+
+#ifdef __KERNEL__
+
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <net/syncppp.h>
+#include <linux/hdlc/ioctl.h>
+
+
+typedef struct {                /* Used in Cisco and PPP mode */
+        u8 address;
+        u8 control;
+        u16 protocol;
+}__attribute__ ((packed)) hdlc_header;
+
+
+
+typedef struct {
+        u32 type;               /* code */
+        u32 par1;
+        u32 par2;
+        u16 rel;                /* reliability */
+        u32 time;
+}__attribute__ ((packed)) cisco_packet;
+#define CISCO_PACKET_LEN        18
+#define CISCO_BIG_PACKET_LEN    20
+
+
+
+typedef struct pvc_device_struct {
+        struct net_device *master;
+        struct net_device *main;
+        struct net_device *ether; /* bridged Ethernet interface */
+        struct pvc_device_struct *next; /* Sorted in ascending DLCI order */
+        int dlci;
+        int open_count;
+
+        struct {
+                unsigned int new: 1;
+                unsigned int active: 1;
+                unsigned int exist: 1;
+                unsigned int deleted: 1;
+                unsigned int fecn: 1;
+                unsigned int becn: 1;
+        }state;
+}pvc_device;
+
+
+
+typedef struct hdlc_device_struct {
+        /* To be initialized by hardware driver */
+        struct net_device_stats stats;
+
+        /* 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 */
+        int (*xmit)(struct sk_buff *skb, struct net_device *dev);
+
+
+        /* Things below are for HDLC layer internal use only */
+        struct {
+                int (*open)(struct net_device *dev);
+                void (*close)(struct net_device *dev);
+
+                /* if open & DCD */
+                void (*start)(struct net_device *dev);
+                /* if open & !DCD */
+                void (*stop)(struct net_device *dev);
+
+                void (*detach)(struct hdlc_device_struct *hdlc);
+                int (*netif_rx)(struct sk_buff *skb);
+                unsigned short (*type_trans)(struct sk_buff *skb,
+                                             struct net_device *dev);
+                int id;         /* IF_PROTO_HDLC/CISCO/FR/etc. */
+        }proto;
+
+        int carrier;
+        int open;
+        spinlock_t state_lock;
+
+        union {
+                struct {
+                        fr_proto settings;
+                        pvc_device *first_pvc;
+                        int dce_pvc_count;
+
+                        struct timer_list timer;
+                        unsigned long last_poll;
+                        int reliable;
+                        int dce_changed;
+                        int request;
+                        int fullrep_sent;
+                        u32 last_errors; /* last errors bit list */
+                        u8 n391cnt;
+                        u8 txseq; /* TX sequence number */
+                        u8 rxseq; /* RX sequence number */
+                }fr;
+
+                struct {
+                        cisco_proto settings;
+
+                        struct timer_list timer;
+                        unsigned long last_poll;
+                        int up;
+                        int request_sent;
+                        u32 txseq; /* TX sequence number */
+                        u32 rxseq; /* RX sequence number */
+                }cisco;
+
+                struct {
+                        raw_hdlc_proto settings;
+                }raw_hdlc;
+
+                struct {
+                        struct ppp_device pppdev;
+                        struct ppp_device *syncppp_ptr;
+                        int (*old_change_mtu)(struct net_device *dev,
+                                              int new_mtu);
+                }ppp;
+        }state;
+        void *priv;
+}hdlc_device;
+
+
+
+int hdlc_raw_ioctl(struct net_device *dev, struct ifreq *ifr);
+int hdlc_raw_eth_ioctl(struct net_device *dev, struct ifreq *ifr);
+int hdlc_cisco_ioctl(struct net_device *dev, struct ifreq *ifr);
+int hdlc_ppp_ioctl(struct net_device *dev, struct ifreq *ifr);
+int hdlc_fr_ioctl(struct net_device *dev, struct ifreq *ifr);
+int hdlc_x25_ioctl(struct net_device *dev, struct ifreq *ifr);
+
+
+/* Exported from hdlc.o */
+
+/* Called by hardware driver when a user requests HDLC service */
+int hdlc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
+
+/* Must be used by hardware driver on module startup/exit */
+int register_hdlc_device(struct net_device *dev);
+void unregister_hdlc_device(struct net_device *dev);
+
+struct net_device *alloc_hdlcdev(void *priv);
+
+static __inline__ hdlc_device* dev_to_hdlc(struct net_device *dev)
+{
+        return netdev_priv(dev);
+}
+
+
+static __inline__ pvc_device* dev_to_pvc(struct net_device *dev)
+{
+        return (pvc_device*)dev->priv;
+}
+
+
+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);
+/* Called by hardware driver when DCD line level changes */
+void hdlc_set_carrier(int on, struct net_device *dev);
+
+/* May be used by hardware driver to gain control over HDLC device */
+static __inline__ void hdlc_proto_detach(hdlc_device *hdlc)
+{
+        if (hdlc->proto.detach)
+                hdlc->proto.detach(hdlc);
+        hdlc->proto.detach = NULL;
+}
+
+
+static __inline__ struct net_device_stats *hdlc_stats(struct net_device *dev)
+{
+        return &dev_to_hdlc(dev)->stats;
+}
+
+
+static __inline__ unsigned short hdlc_type_trans(struct sk_buff *skb,
+                                                 struct net_device *dev)
+{
+        hdlc_device *hdlc = dev_to_hdlc(dev);
+
+        skb->mac.raw  = skb->data;
+        skb->dev      = dev;
+
+        if (hdlc->proto.type_trans)
+                return hdlc->proto.type_trans(skb, dev);
+        else
+                return htons(ETH_P_HDLC);
+}
+
+#endif /* __KERNEL */
+#endif /* __HDLC_H */