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| author | Mike Christie <michaelc@cs.wisc.edu> | 2009-08-20 15:11:02 -0500 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2009-09-05 09:42:47 -0500 |
| commit | d1af8a328755f51c9b76157a8692e56520d3fd94 (patch) | |
| tree | 36abdfc44e548134d3a51feff45e3c85591d76d8 /drivers/scsi/iscsi_tcp.c | |
| parent | 632248aab3170004e24512a4378fc6d9d7f3b4ac (diff) | |
| download | linux-stable-d1af8a328755f51c9b76157a8692e56520d3fd94.tar.gz linux-stable-d1af8a328755f51c9b76157a8692e56520d3fd94.tar.bz2 linux-stable-d1af8a328755f51c9b76157a8692e56520d3fd94.zip | |
[SCSI] iscsi_tcp: add new conn error to indicate tcp conn closed
If a target closed the connection, we will detect it in the
state_changed or data_ready callout. This adds a new conn
error value to use for this problem, so it is not confused
with when the initiator throws a conn error and drops
the connection.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/iscsi_tcp.c')
| -rw-r--r-- | drivers/scsi/iscsi_tcp.c | 23 |
1 files changed, 9 insertions, 14 deletions
diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c index c7e2ff24ee9e..2b1b834a098b 100644 --- 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; |