diff options
Diffstat (limited to 'net/ax25/ax25_ip.c')
| -rw-r--r-- | net/ax25/ax25_ip.c | 116 |
1 files changed, 63 insertions, 53 deletions
diff --git a/net/ax25/ax25_ip.c b/net/ax25/ax25_ip.c index 136c3aefa9d..67de6b33f2c 100644 --- a/net/ax25/ax25_ip.c +++ b/net/ax25/ax25_ip.c @@ -12,11 +12,11 @@ #include <linux/in.h> #include <linux/kernel.h> #include <linux/module.h> -#include <linux/sched.h> #include <linux/timer.h> #include <linux/string.h> #include <linux/sockios.h> #include <linux/net.h> +#include <linux/slab.h> #include <net/ax25.h> #include <linux/inet.h> #include <linux/netdevice.h> @@ -24,7 +24,6 @@ #include <linux/skbuff.h> #include <net/sock.h> #include <asm/uaccess.h> -#include <asm/system.h> #include <linux/fcntl.h> #include <linux/termios.h> /* For TIOCINQ/OUTQ */ #include <linux/mm.h> @@ -47,7 +46,9 @@ #ifdef CONFIG_INET -int ax25_hard_header(struct sk_buff *skb, struct net_device *dev, unsigned short type, void *daddr, void *saddr, unsigned len) +int ax25_hard_header(struct sk_buff *skb, struct net_device *dev, + unsigned short type, const void *daddr, + const void *saddr, unsigned int len) { unsigned char *buff; @@ -55,46 +56,46 @@ int ax25_hard_header(struct sk_buff *skb, struct net_device *dev, unsigned short if (type == ETH_P_AX25) return 0; - /* header is an AX.25 UI frame from us to them */ - buff = skb_push(skb, AX25_HEADER_LEN); - *buff++ = 0x00; /* KISS DATA */ + /* header is an AX.25 UI frame from us to them */ + buff = skb_push(skb, AX25_HEADER_LEN); + *buff++ = 0x00; /* KISS DATA */ if (daddr != NULL) memcpy(buff, daddr, dev->addr_len); /* Address specified */ - buff[6] &= ~AX25_CBIT; - buff[6] &= ~AX25_EBIT; - buff[6] |= AX25_SSSID_SPARE; - buff += AX25_ADDR_LEN; - - if (saddr != NULL) - memcpy(buff, saddr, dev->addr_len); - else - memcpy(buff, dev->dev_addr, dev->addr_len); - - buff[6] &= ~AX25_CBIT; - buff[6] |= AX25_EBIT; - buff[6] |= AX25_SSSID_SPARE; - buff += AX25_ADDR_LEN; - - *buff++ = AX25_UI; /* UI */ - - /* Append a suitable AX.25 PID */ - switch (type) { - case ETH_P_IP: - *buff++ = AX25_P_IP; - break; - case ETH_P_ARP: - *buff++ = AX25_P_ARP; - break; - default: - printk(KERN_ERR "AX.25: ax25_hard_header - wrong protocol type 0x%2.2x\n", type); - *buff++ = 0; - break; - } + buff[6] &= ~AX25_CBIT; + buff[6] &= ~AX25_EBIT; + buff[6] |= AX25_SSSID_SPARE; + buff += AX25_ADDR_LEN; + + if (saddr != NULL) + memcpy(buff, saddr, dev->addr_len); + else + memcpy(buff, dev->dev_addr, dev->addr_len); + + buff[6] &= ~AX25_CBIT; + buff[6] |= AX25_EBIT; + buff[6] |= AX25_SSSID_SPARE; + buff += AX25_ADDR_LEN; + + *buff++ = AX25_UI; /* UI */ + + /* Append a suitable AX.25 PID */ + switch (type) { + case ETH_P_IP: + *buff++ = AX25_P_IP; + break; + case ETH_P_ARP: + *buff++ = AX25_P_ARP; + break; + default: + printk(KERN_ERR "AX.25: ax25_hard_header - wrong protocol type 0x%2.2x\n", type); + *buff++ = 0; + break; + } if (daddr != NULL) - return AX25_HEADER_LEN; + return AX25_HEADER_LEN; return -AX25_HEADER_LEN; /* Unfinished header */ } @@ -114,21 +115,21 @@ int ax25_rebuild_header(struct sk_buff *skb) dst = (ax25_address *)(bp + 1); src = (ax25_address *)(bp + 8); - if (arp_find(bp + 1, skb)) - return 1; + if (arp_find(bp + 1, skb)) + return 1; route = ax25_get_route(dst, NULL); if (route) { digipeat = route->digipeat; dev = route->dev; ip_mode = route->ip_mode; - }; + } if (dev == NULL) dev = skb->dev; - if ((ax25_dev = ax25_dev_ax25dev(dev)) == NULL) { - goto put; + if ((ax25_dev = ax25_dev_ax25dev(dev)) == NULL) { + goto put; } if (bp[16] == AX25_P_IP) { @@ -172,11 +173,11 @@ int ax25_rebuild_header(struct sk_buff *skb) src_c = *(ax25_address *)(bp + 8); skb_pull(ourskb, AX25_HEADER_LEN - 1); /* Keep PID */ - ourskb->nh.raw = ourskb->data; + skb_reset_network_header(ourskb); ax25=ax25_send_frame( - ourskb, - ax25_dev->values[AX25_VALUES_PACLEN], + ourskb, + ax25_dev->values[AX25_VALUES_PACLEN], &src_c, &dst_c, digipeat, dev); if (ax25) { @@ -186,13 +187,13 @@ int ax25_rebuild_header(struct sk_buff *skb) } } - bp[7] &= ~AX25_CBIT; - bp[7] &= ~AX25_EBIT; - bp[7] |= AX25_SSSID_SPARE; + bp[7] &= ~AX25_CBIT; + bp[7] &= ~AX25_EBIT; + bp[7] |= AX25_SSSID_SPARE; - bp[14] &= ~AX25_CBIT; - bp[14] |= AX25_EBIT; - bp[14] |= AX25_SSSID_SPARE; + bp[14] &= ~AX25_CBIT; + bp[14] |= AX25_EBIT; + bp[14] |= AX25_SSSID_SPARE; skb_pull(skb, AX25_KISS_HEADER_LEN); @@ -211,12 +212,14 @@ put: if (route) ax25_put_route(route); - return 1; + return 1; } #else /* INET */ -int ax25_hard_header(struct sk_buff *skb, struct net_device *dev, unsigned short type, void *daddr, void *saddr, unsigned len) +int ax25_hard_header(struct sk_buff *skb, struct net_device *dev, + unsigned short type, const void *daddr, + const void *saddr, unsigned int len) { return -AX25_HEADER_LEN; } @@ -228,5 +231,12 @@ int ax25_rebuild_header(struct sk_buff *skb) #endif +const struct header_ops ax25_header_ops = { + .create = ax25_hard_header, + .rebuild = ax25_rebuild_header, +}; + EXPORT_SYMBOL(ax25_hard_header); EXPORT_SYMBOL(ax25_rebuild_header); +EXPORT_SYMBOL(ax25_header_ops); + |