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authorAndreas Eversberg <andreas@eversberg.eu>2008-09-14 12:30:18 +0200
committerKarsten Keil <kkeil@suse.de>2009-01-09 22:44:27 +0100
commit1b4d33121f1d991f6ae226cc3333428ff87627bb (patch)
tree48fef7c8a422087a15a03c025b7709a100498a5a /drivers/isdn/mISDN/socket.c
parent02282eee56b75a35e6bbc42cc34c9005eb1653f4 (diff)
mISDN: Fix deactivation, if peer IP is removed from l1oip instance.
Added GETPEER operation. Socket now checks if device is already busy at a differen mode. Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <kkeil@suse.de>
Diffstat (limited to 'drivers/isdn/mISDN/socket.c')
-rw-r--r--drivers/isdn/mISDN/socket.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/isdn/mISDN/socket.c b/drivers/isdn/mISDN/socket.c
index 2f6d6e88ff2c..916569ca156d 100644
--- a/drivers/isdn/mISDN/socket.c
+++ b/drivers/isdn/mISDN/socket.c
@@ -460,6 +460,8 @@ data_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
{
struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr;
struct sock *sk = sock->sk;
+ struct hlist_node *node;
+ struct sock *csk;
int err = 0;
if (*debug & DEBUG_SOCKET)
@@ -480,6 +482,24 @@ data_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
err = -ENODEV;
goto done;
}
+
+ read_lock_bh(&data_sockets.lock);
+ sk_for_each(csk, node, &data_sockets.head) {
+ if (sk == csk)
+ continue;
+ if (_pms(csk)->dev != _pms(sk)->dev)
+ continue;
+ if (csk->sk_protocol >= ISDN_P_B_START)
+ continue;
+ if (IS_ISDN_P_TE(csk->sk_protocol)
+ == IS_ISDN_P_TE(sk->sk_protocol))
+ continue;
+ read_unlock_bh(&data_sockets.lock);
+ err = -EBUSY;
+ goto done;
+ }
+ read_unlock_bh(&data_sockets.lock);
+
_pms(sk)->ch.send = mISDN_send;
_pms(sk)->ch.ctrl = mISDN_ctrl;