[PATCH][ATM]: use RCV_SHUTDOWN to exit skb_recv_datagram()

["chas williams (contractor)" <chas@xxxxxxxxxxxxxxxx>]

this patch makes the svc socket protocol act a little more like
a connection oriented protocol.  please apply to 2.6.

thanks!

# This is a BitKeeper generated diff -Nru style patch.
#
# ChangeSet
#   2004/10/06 17:12:52-04:00 chas@xxxxxxxxxxxxxxxxxxxxxx 
#   [ATM]: use RCV_SHUTDOWN to exit skb_recv_datagram()
# 
# net/atm/signaling.c
#   2004/10/06 17:12:36-04:00 chas@xxxxxxxxxxxxxxxxxxxxxx +2 -6
#   [ATM]: use RCV_SHUTDOWN to exit skb_recv_datagram()
# 
# net/atm/common.c
#   2004/10/06 17:12:36-04:00 chas@xxxxxxxxxxxxxxxxxxxxxx +2 -0
#   [ATM]: use RCV_SHUTDOWN to exit skb_recv_datagram()
# 
diff -Nru a/net/atm/common.c b/net/atm/common.c
--- a/net/atm/common.c  2004-10-18 16:13:32 -04:00
+++ b/net/atm/common.c  2004-10-18 16:13:32 -04:00
@@ -178,6 +178,7 @@
        struct atm_vcc *vcc = atm_sk(sk);
        struct sk_buff *skb;
 
+       set_bit(ATM_VF_CLOSE, &vcc->flags);
        clear_bit(ATM_VF_READY, &vcc->flags);
        if (vcc->dev) {
                if (vcc->dev->ops->close)
@@ -216,6 +217,7 @@
 void vcc_release_async(struct atm_vcc *vcc, int reply)
 {
        set_bit(ATM_VF_CLOSE, &vcc->flags);
+       vcc->sk->sk_shutdown |= RCV_SHUTDOWN;
        vcc->sk->sk_err = -reply;
        clear_bit(ATM_VF_WAITING, &vcc->flags);
        vcc->sk->sk_state_change(vcc->sk);
diff -Nru a/net/atm/signaling.c b/net/atm/signaling.c
--- a/net/atm/signaling.c       2004-10-18 16:13:32 -04:00
+++ b/net/atm/signaling.c       2004-10-18 16:13:32 -04:00
@@ -147,9 +147,7 @@
                        return 0;
                case as_close:
                        set_bit(ATM_VF_RELEASED,&vcc->flags);
-                       clear_bit(ATM_VF_READY,&vcc->flags);
-                       vcc->sk->sk_err = -msg->reply;
-                       clear_bit(ATM_VF_WAITING, &vcc->flags);
+                       vcc_release_async(vcc, msg->reply);
                        break;
                case as_modify:
                        modify_qos(vcc,msg);
@@ -205,9 +203,7 @@
        if (vcc->sk->sk_family == PF_ATMSVC &&
            !test_bit(ATM_VF_META,&vcc->flags)) {
                set_bit(ATM_VF_RELEASED,&vcc->flags);
-               vcc->sk->sk_err = EUNATCH;
-               clear_bit(ATM_VF_WAITING, &vcc->flags);
-               vcc->sk->sk_state_change(vcc->sk);
+               vcc_release_async(vcc, -EUNATCH);
        }
 }