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ax25: Stop using sock->sk_protinfo. 

Just make a ax25_sock structure that provides the ax25_cb pointer.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Miller 2015-06-25 06:19:07 -07:00 committed by David S. Miller
parent 2e598712e4
commit 3200392b88
3 changed files with 31 additions and 17 deletions
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16
include/net/ax25.h
View File

@ -13,6 +13,7 @@
#include <linux/slab.h>
#include <linux/atomic.h>
#include <net/neighbour.h>
#include <net/sock.h>
#define AX25_T1CLAMPLO 1
#define AX25_T1CLAMPHI (30 * HZ)
@ -246,7 +247,20 @@ typedef struct ax25_cb {
atomic_t refcount;
} ax25_cb;
#define ax25_sk(__sk) ((ax25_cb *)(__sk)->sk_protinfo)
struct ax25_sock {
struct sock sk;
struct ax25_cb *cb;
};
static inline struct ax25_sock *ax25_sk(const struct sock *sk)
{
return (struct ax25_sock *) sk;
}
static inline struct ax25_cb *sk_to_ax25(const struct sock *sk)
{
return ax25_sk(sk)->cb;
}
#define ax25_for_each(__ax25, list) \
hlist_for_each_entry(__ax25, list, ax25_node)

30
net/ax25/af_ax25.c
View File

@ -57,7 +57,7 @@ static const struct proto_ops ax25_proto_ops;
static void ax25_free_sock(struct sock *sk)
{
ax25_cb_put(ax25_sk(sk));
ax25_cb_put(sk_to_ax25(sk));
}
/*
@ -306,7 +306,7 @@ void ax25_destroy_socket(ax25_cb *ax25)
while ((skb = skb_dequeue(&ax25->sk->sk_receive_queue)) != NULL) {
if (skb->sk != ax25->sk) {
/* A pending connection */
ax25_cb *sax25 = ax25_sk(skb->sk);
ax25_cb *sax25 = sk_to_ax25(skb->sk);
/* Queue the unaccepted socket for death */
sock_orphan(skb->sk);
@ -551,7 +551,7 @@ static int ax25_setsockopt(struct socket *sock, int level, int optname,
return -EFAULT;
lock_sock(sk);
ax25 = ax25_sk(sk);
ax25 = sk_to_ax25(sk);
switch (optname) {
case AX25_WINDOW:
@ -697,7 +697,7 @@ static int ax25_getsockopt(struct socket *sock, int level, int optname,
length = min_t(unsigned int, maxlen, sizeof(int));
lock_sock(sk);
ax25 = ax25_sk(sk);
ax25 = sk_to_ax25(sk);
switch (optname) {
case AX25_WINDOW:
@ -796,7 +796,7 @@ out:
static struct proto ax25_proto = {
.name = "AX25",
.owner = THIS_MODULE,
.obj_size = sizeof(struct sock),
.obj_size = sizeof(struct ax25_sock),
};
static int ax25_create(struct net *net, struct socket *sock, int protocol,
@ -858,7 +858,7 @@ static int ax25_create(struct net *net, struct socket *sock, int protocol,
if (sk == NULL)
return -ENOMEM;
ax25 = sk->sk_protinfo = ax25_create_cb();
ax25 = ax25_sk(sk)->cb = ax25_create_cb();
if (!ax25) {
sk_free(sk);
return -ENOMEM;
@ -910,7 +910,7 @@ struct sock *ax25_make_new(struct sock *osk, struct ax25_dev *ax25_dev)
sk->sk_state = TCP_ESTABLISHED;
sock_copy_flags(sk, osk);
oax25 = ax25_sk(osk);
oax25 = sk_to_ax25(osk);
ax25->modulus = oax25->modulus;
ax25->backoff = oax25->backoff;
@ -938,7 +938,7 @@ struct sock *ax25_make_new(struct sock *osk, struct ax25_dev *ax25_dev)
}
}
sk->sk_protinfo = ax25;
ax25_sk(sk)->cb = ax25;
sk->sk_destruct = ax25_free_sock;
ax25->sk = sk;
@ -956,7 +956,7 @@ static int ax25_release(struct socket *sock)
sock_hold(sk);
sock_orphan(sk);
lock_sock(sk);
ax25 = ax25_sk(sk);
ax25 = sk_to_ax25(sk);
if (sk->sk_type == SOCK_SEQPACKET) {
switch (ax25->state) {
@ -1066,7 +1066,7 @@ static int ax25_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
lock_sock(sk);
ax25 = ax25_sk(sk);
ax25 = sk_to_ax25(sk);
if (!sock_flag(sk, SOCK_ZAPPED)) {
err = -EINVAL;
goto out;
@ -1113,7 +1113,7 @@ static int __must_check ax25_connect(struct socket *sock,
struct sockaddr *uaddr, int addr_len, int flags)
{
struct sock *sk = sock->sk;
ax25_cb *ax25 = ax25_sk(sk), *ax25t;
ax25_cb *ax25 = sk_to_ax25(sk), *ax25t;
struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)uaddr;
ax25_digi *digi = NULL;
int ct = 0, err = 0;
@ -1394,7 +1394,7 @@ static int ax25_getname(struct socket *sock, struct sockaddr *uaddr,
memset(fsa, 0, sizeof(*fsa));
lock_sock(sk);
ax25 = ax25_sk(sk);
ax25 = sk_to_ax25(sk);
if (peer != 0) {
if (sk->sk_state != TCP_ESTABLISHED) {
@ -1446,7 +1446,7 @@ static int ax25_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
return -EINVAL;
lock_sock(sk);
ax25 = ax25_sk(sk);
ax25 = sk_to_ax25(sk);
if (sock_flag(sk, SOCK_ZAPPED)) {
err = -EADDRNOTAVAIL;
@ -1621,7 +1621,7 @@ static int ax25_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
if (skb == NULL)
goto out;
if (!ax25_sk(sk)->pidincl)
if (!sk_to_ax25(sk)->pidincl)
skb_pull(skb, 1); /* Remove PID */
skb_reset_transport_header(skb);
@ -1762,7 +1762,7 @@ static int ax25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
case SIOCAX25GETINFO:
case SIOCAX25GETINFOOLD: {
ax25_cb *ax25 = ax25_sk(sk);
ax25_cb *ax25 = sk_to_ax25(sk);
struct ax25_info_struct ax25_info;
ax25_info.t1 = ax25->t1 / HZ;

2
net/ax25/ax25_in.c
View File

@ -353,7 +353,7 @@ static int ax25_rcv(struct sk_buff *skb, struct net_device *dev,
return 0;
}
ax25 = ax25_sk(make);
ax25 = sk_to_ax25(make);
skb_set_owner_r(skb, make);
skb_queue_head(&sk->sk_receive_queue, skb);