#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>
skb_reserve(skbn, AX25_MAX_HEADER_LEN);
skbn->dev = ax25->ax25_dev->dev;
- skbn->h.raw = skbn->data;
- skbn->nh.raw = skbn->data;
+ skb_reset_network_header(skbn);
+ skb_reset_transport_header(skbn);
/* Copy data from the fragments */
while ((skbo = skb_dequeue(&ax25->frag_queue)) != NULL) {
- memcpy(skb_put(skbn, skbo->len), skbo->data, skbo->len);
+ skb_copy_from_linear_data(skbo,
+ skb_put(skbn, skbo->len),
+ skbo->len);
kfree_skb(skbo);
}
}
skb_pull(skb, 1); /* Remove PID */
- skb->mac.raw = skb->nh.raw;
- skb->nh.raw = skb->data;
+ skb->mac_header = skb->network_header;
+ skb_reset_network_header(skb);
skb->dev = ax25->ax25_dev->dev;
skb->pkt_type = PACKET_HOST;
skb->protocol = htons(ETH_P_IP);
* Process the AX.25/LAPB frame.
*/
- skb->h.raw = skb->data;
+ skb_reset_transport_header(skb);
- if ((ax25_dev = ax25_dev_ax25dev(dev)) == NULL) {
- kfree_skb(skb);
- return 0;
- }
+ if ((ax25_dev = ax25_dev_ax25dev(dev)) == NULL)
+ goto free;
/*
* Parse the address header.
*/
- if (ax25_addr_parse(skb->data, skb->len, &src, &dest, &dp, &type, &dama) == NULL) {
- kfree_skb(skb);
- return 0;
- }
+ if (ax25_addr_parse(skb->data, skb->len, &src, &dest, &dp, &type, &dama) == NULL)
+ goto free;
/*
* Ours perhaps ?
/* UI frame - bypass LAPB processing */
if ((*skb->data & ~0x10) == AX25_UI && dp.lastrepeat + 1 == dp.ndigi) {
- skb->h.raw = skb->data + 2; /* skip control and pid */
+ skb_set_transport_header(skb, 2); /* skip control and pid */
ax25_send_to_raw(&dest, skb, skb->data[1]);
- if (!mine && ax25cmp(&dest, (ax25_address *)dev->broadcast) != 0) {
- kfree_skb(skb);
- return 0;
- }
+ if (!mine && ax25cmp(&dest, (ax25_address *)dev->broadcast) != 0)
+ goto free;
/* Now we are pointing at the pid byte */
switch (skb->data[1]) {
case AX25_P_IP:
skb_pull(skb,2); /* drop PID/CTRL */
- skb->h.raw = skb->data;
- skb->nh.raw = skb->data;
+ skb_reset_transport_header(skb);
+ skb_reset_network_header(skb);
skb->dev = dev;
skb->pkt_type = PACKET_HOST;
skb->protocol = htons(ETH_P_IP);
case AX25_P_ARP:
skb_pull(skb,2);
- skb->h.raw = skb->data;
- skb->nh.raw = skb->data;
+ skb_reset_transport_header(skb);
+ skb_reset_network_header(skb);
skb->dev = dev;
skb->pkt_type = PACKET_HOST;
skb->protocol = htons(ETH_P_ARP);
* If not, should we DM the incoming frame (except DMs) or
* silently ignore them. For now we stay quiet.
*/
- if (ax25_dev->values[AX25_VALUES_CONMODE] == 0) {
- kfree_skb(skb);
- return 0;
- }
+ if (ax25_dev->values[AX25_VALUES_CONMODE] == 0)
+ goto free;
/* LAPB */
if ((*skb->data & ~AX25_PF) != AX25_DM && mine)
ax25_return_dm(dev, &src, &dest, &dp);
- kfree_skb(skb);
- return 0;
+ goto free;
}
/* b) received SABM(E) */
sk->sk_ack_backlog++;
bh_unlock_sock(sk);
} else {
- if (!mine) {
- kfree_skb(skb);
- return 0;
- }
+ if (!mine)
+ goto free;
if ((ax25 = ax25_create_cb()) == NULL) {
ax25_return_dm(dev, &src, &dest, &dp);
- kfree_skb(skb);
- return 0;
+ goto free;
}
ax25_fillin_cb(ax25, ax25_dev);
if (!sock_flag(sk, SOCK_DEAD))
sk->sk_data_ready(sk, skb->len);
sock_put(sk);
- } else
+ } else {
+free:
kfree_skb(skb);
-
+ }
return 0;
}
int ax25_kiss_rcv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *ptype, struct net_device *orig_dev)
{
- skb->sk = NULL; /* Initially we don't know who it's for */
- skb->destructor = NULL; /* Who initializes this, dammit?! */
+ skb_orphan(skb);
+
+ if (!net_eq(dev_net(dev), &init_net)) {
+ kfree_skb(skb);
+ return 0;
+ }
if ((*skb->data & 0x0F) != 0) {
kfree_skb(skb); /* Not a KISS data frame */