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Diffstat (limited to 'net/ax25/ax25_ip.c')
-rw-r--r--net/ax25/ax25_ip.c141
1 files changed, 80 insertions, 61 deletions
diff --git a/net/ax25/ax25_ip.c b/net/ax25/ax25_ip.c
index d643dac3ecc..67de6b33f2c 100644
--- a/net/ax25/ax25_ip.c
+++ b/net/ax25/ax25_ip.c
@@ -6,17 +6,17 @@
*
* Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
*/
-#include <linux/config.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/in.h>
#include <linux/kernel.h>
-#include <linux/sched.h>
+#include <linux/module.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 */
}
@@ -103,30 +104,36 @@ int ax25_rebuild_header(struct sk_buff *skb)
{
struct sk_buff *ourskb;
unsigned char *bp = skb->data;
- struct net_device *dev;
+ ax25_route *route;
+ struct net_device *dev = NULL;
ax25_address *src, *dst;
+ ax25_digi *digipeat = NULL;
ax25_dev *ax25_dev;
- ax25_route _route, *route = &_route;
ax25_cb *ax25;
+ char ip_mode = ' ';
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_rt_find_route(route, dst, NULL);
- dev = route->dev;
+ 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) {
- if (route->ip_mode == 'V' || (route->ip_mode == ' ' && ax25_dev->values[AX25_VALUES_IPDEFMODE])) {
+ if (ip_mode == 'V' || (ip_mode == ' ' && ax25_dev->values[AX25_VALUES_IPDEFMODE])) {
/*
* We copy the buffer and release the original thereby
* keeping it straight
@@ -166,13 +173,13 @@ 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, route->digipeat, dev);
+ &dst_c, digipeat, dev);
if (ax25) {
ax25_cb_put(ax25);
}
@@ -180,17 +187,17 @@ 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);
- if (route->digipeat != NULL) {
+ if (digipeat != NULL) {
if ((ourskb = ax25_rt_build_path(skb, src, dst, route->digipeat)) == NULL) {
kfree_skb(skb);
goto put;
@@ -202,14 +209,17 @@ int ax25_rebuild_header(struct sk_buff *skb)
ax25_queue_xmit(skb, dev);
put:
- ax25_put_route(route);
+ 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;
}
@@ -221,3 +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);
+
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 18:29:30 +0000