diff options
| -rw-r--r-- | drivers/infiniband/ulp/iser/iscsi_iser.c | 4 | ||||
| -rw-r--r-- | drivers/infiniband/ulp/iser/iser_initiator.c | 26 |
2 files changed, 14 insertions, 16 deletions
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c index 9b2041e25d59..dd221eda3ea6 100644 --- a/drivers/infiniband/ulp/iser/iscsi_iser.c +++ b/drivers/infiniband/ulp/iser/iscsi_iser.c @@ -177,7 +177,7 @@ iscsi_iser_mtask_xmit(struct iscsi_conn *conn, * - if yes, the mtask is recycled at iscsi_complete_pdu * - if no, the mtask is recycled at iser_snd_completion */ - if (error && error != -EAGAIN) + if (error && error != -ENOBUFS) iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED); return error; @@ -241,7 +241,7 @@ iscsi_iser_ctask_xmit(struct iscsi_conn *conn, error = iscsi_iser_ctask_xmit_unsol_data(conn, ctask); iscsi_iser_ctask_xmit_exit: - if (error && error != -EAGAIN) + if (error && error != -ENOBUFS) iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED); return error; } diff --git a/drivers/infiniband/ulp/iser/iser_initiator.c b/drivers/infiniband/ulp/iser/iser_initiator.c index 9b3d79c796c8..3663c2789d5a 100644 --- a/drivers/infiniband/ulp/iser/iser_initiator.c +++ b/drivers/infiniband/ulp/iser/iser_initiator.c @@ -304,18 +304,14 @@ int iser_conn_set_full_featured_mode(struct iscsi_conn *conn) static int iser_check_xmit(struct iscsi_conn *conn, void *task) { - int rc = 0; struct iscsi_iser_conn *iser_conn = conn->dd_data; - write_lock_bh(conn->recv_lock); if (atomic_read(&iser_conn->ib_conn->post_send_buf_count) == ISER_QP_MAX_REQ_DTOS) { - iser_dbg("%ld can't xmit task %p, suspending tx\n",jiffies,task); - set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx); - rc = -EAGAIN; + iser_dbg("%ld can't xmit task %p\n",jiffies,task); + return -ENOBUFS; } - write_unlock_bh(conn->recv_lock); - return rc; + return 0; } @@ -340,7 +336,7 @@ int iser_send_command(struct iscsi_conn *conn, return -EPERM; } if (iser_check_xmit(conn, ctask)) - return -EAGAIN; + return -ENOBUFS; edtl = ntohl(hdr->data_length); @@ -426,7 +422,7 @@ int iser_send_data_out(struct iscsi_conn *conn, } if (iser_check_xmit(conn, ctask)) - return -EAGAIN; + return -ENOBUFS; itt = ntohl(hdr->itt); data_seg_len = ntoh24(hdr->dlength); @@ -500,7 +496,7 @@ int iser_send_control(struct iscsi_conn *conn, } if (iser_check_xmit(conn,mtask)) - return -EAGAIN; + return -ENOBUFS; /* build the tx desc regd header and add it to the tx desc dto */ mdesc->type = ISCSI_TX_CONTROL; @@ -609,6 +605,7 @@ void iser_snd_completion(struct iser_desc *tx_desc) struct iscsi_iser_conn *iser_conn = ib_conn->iser_conn; struct iscsi_conn *conn = iser_conn->iscsi_conn; struct iscsi_mgmt_task *mtask; + int resume_tx = 0; iser_dbg("Initiator, Data sent dto=0x%p\n", dto); @@ -617,15 +614,16 @@ void iser_snd_completion(struct iser_desc *tx_desc) if (tx_desc->type == ISCSI_TX_DATAOUT) kmem_cache_free(ig.desc_cache, tx_desc); + if (atomic_read(&iser_conn->ib_conn->post_send_buf_count) == + ISER_QP_MAX_REQ_DTOS) + resume_tx = 1; + atomic_dec(&ib_conn->post_send_buf_count); - write_lock(conn->recv_lock); - if (conn->suspend_tx) { + if (resume_tx) { iser_dbg("%ld resuming tx\n",jiffies); - clear_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx); scsi_queue_work(conn->session->host, &conn->xmitwork); } - write_unlock(conn->recv_lock); if (tx_desc->type == ISCSI_TX_CONTROL) { /* this arithmetic is legal by libiscsi dd_data allocation */ |