From d1af8a328755f51c9b76157a8692e56520d3fd94 Mon Sep 17 00:00:00 2001 From: Mike Christie Date: Thu, 20 Aug 2009 15:11:02 -0500 Subject: [PATCH] [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 Signed-off-by: James Bottomley --- drivers/scsi/iscsi_tcp.c | 23 +++++++++-------------- include/scsi/iscsi_if.h | 1 + 2 files changed, 10 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; diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h index 4426f00da5ff..d67dda2b6aa0 100644 --- a/include/scsi/iscsi_if.h +++ b/include/scsi/iscsi_if.h @@ -262,6 +262,7 @@ enum iscsi_err { ISCSI_ERR_NO_SCSI_CMD = ISCSI_ERR_BASE + 17, ISCSI_ERR_INVALID_HOST = ISCSI_ERR_BASE + 18, ISCSI_ERR_XMIT_FAILED = ISCSI_ERR_BASE + 19, + ISCSI_ERR_TCP_CONN_CLOSE = ISCSI_ERR_BASE + 20, }; /* -- 2.20.1