proc: warn on non-existing proc entries

[safe/jmp/linux-2.6] / drivers / scsi / iscsi_tcp.c

diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c
index c7e2ff2..8a89ba9 100644 (file)
--- a/drivers/scsi/iscsi_tcp.c
+++ b/drivers/scsi/iscsi_tcp.c
@@ -109,11 +109,14 @@ static int iscsi_sw_tcp_recv(read_descriptor_t *rd_desc, struct sk_buff *skb,
  */
 static inline int iscsi_sw_sk_state_check(struct sock *sk)
 {
-       if ((sk->sk_state == TCP_CLOSE_WAIT ||
-            sk->sk_state == TCP_CLOSE) &&
-           !atomic_read(&sk->sk_rmem_alloc))
-               return -ECONNRESET;
+       struct iscsi_conn *conn = (struct iscsi_conn*)sk->sk_user_data;
 
+       if ((sk->sk_state == TCP_CLOSE_WAIT || sk->sk_state == TCP_CLOSE) &&
+           !atomic_read(&sk->sk_rmem_alloc)) {
+               ISCSI_SW_TCP_DBG(conn, "TCP_CLOSE|TCP_CLOSE_WAIT\n");
+               iscsi_conn_failure(conn, ISCSI_ERR_TCP_CONN_CLOSE);
+               return -ECONNRESET;
+       }
        return 0;
 }
 
@@ -135,11 +138,7 @@ static void iscsi_sw_tcp_data_ready(struct sock *sk, int flag)
        rd_desc.count = 1;
        tcp_read_sock(sk, &rd_desc, iscsi_sw_tcp_recv);
 
-       if (iscsi_sw_sk_state_check(sk) < 0) {
-               ISCSI_SW_TCP_DBG(conn, "iscsi_tcp_data_ready: "
-                                "TCP_CLOSE|TCP_CLOSE_WAIT\n");
-               iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
-       }
+       iscsi_sw_sk_state_check(sk);
 
        read_unlock(&sk->sk_callback_lock);
 
@@ -161,11 +160,7 @@ static void iscsi_sw_tcp_state_change(struct sock *sk)
        conn = (struct iscsi_conn*)sk->sk_user_data;
        session = conn->session;
 
-       if (iscsi_sw_sk_state_check(sk) < 0) {
-               ISCSI_SW_TCP_DBG(conn, "iscsi_tcp_state_change: "
-                                "TCP_CLOSE|TCP_CLOSE_WAIT\n");
-               iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
-       }
+       iscsi_sw_sk_state_check(sk);
 
        tcp_conn = conn->dd_data;
        tcp_sw_conn = tcp_conn->dd_data;
@@ -589,9 +584,10 @@ static void iscsi_sw_tcp_conn_stop(struct iscsi_cls_conn *cls_conn, int flag)
        struct iscsi_conn *conn = cls_conn->dd_data;
        struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
        struct iscsi_sw_tcp_conn *tcp_sw_conn = tcp_conn->dd_data;
+       struct socket *sock = tcp_sw_conn->sock;
 
        /* userspace may have goofed up and not bound us */
-       if (!tcp_sw_conn->sock)
+       if (!sock)
                return;
        /*
         * Make sure our recv side is stopped.
@@ -602,6 +598,11 @@ static void iscsi_sw_tcp_conn_stop(struct iscsi_cls_conn *cls_conn, int flag)
        set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx);
        write_unlock_bh(&tcp_sw_conn->sock->sk->sk_callback_lock);
 
+       if (sock->sk->sk_sleep && waitqueue_active(sock->sk->sk_sleep)) {
+               sock->sk->sk_err = EIO;
+               wake_up_interruptible(sock->sk->sk_sleep);
+       }
+
        iscsi_conn_stop(cls_conn, flag);
        iscsi_sw_tcp_release_conn(conn);
 }
@@ -816,7 +817,7 @@ iscsi_sw_tcp_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
                goto free_host;
 
        cls_session = iscsi_session_setup(&iscsi_sw_tcp_transport, shost,
-                                         cmds_max,
+                                         cmds_max, 0,
                                          sizeof(struct iscsi_tcp_task) +
                                          sizeof(struct iscsi_sw_tcp_hdrbuf),
                                          initial_cmdsn, 0);
@@ -908,7 +909,7 @@ static struct iscsi_transport iscsi_sw_tcp_transport = {
                                  ISCSI_USERNAME | ISCSI_PASSWORD |
                                  ISCSI_USERNAME_IN | ISCSI_PASSWORD_IN |
                                  ISCSI_FAST_ABORT | ISCSI_ABORT_TMO |
-                                 ISCSI_LU_RESET_TMO |
+                                 ISCSI_LU_RESET_TMO | ISCSI_TGT_RESET_TMO |
                                  ISCSI_PING_TMO | ISCSI_RECV_TMO |
                                  ISCSI_IFACE_NAME | ISCSI_INITIATOR_NAME,
        .host_param_mask        = ISCSI_HOST_HWADDRESS | ISCSI_HOST_IPADDRESS |