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| author | Mike Christie <michaelc@cs.wisc.edu> | 2009-05-13 17:57:39 -0500 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2009-05-23 15:44:09 -0500 |
| commit | 184b57c630c86d35b7f92d4b6545fdf07647c5d5 (patch) | |
| tree | d6e46048015ccfefec0f47662d2202e5dc26d6fb /drivers/scsi/libiscsi.c | |
| parent | 10eb0f013c63c71c82ede77945a5f390c10cfda6 (diff) | |
| download | lwn-184b57c630c86d35b7f92d4b6545fdf07647c5d5.tar.gz lwn-184b57c630c86d35b7f92d4b6545fdf07647c5d5.zip | |
[SCSI] libiscsi: check of LLD has a alloc pdu callout.
bnx2i does not have one. It currently preallocates the bdt
when the session is setup.
We probably want to change that to a dma pool, then allocate from
the pool in the alloc pdu. Until then check if there is a alloc
pdu callout.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/libiscsi.c')
| -rw-r--r-- | drivers/scsi/libiscsi.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c index e72b4ad47d35..11bc3e1fbd5a 100644 --- a/drivers/scsi/libiscsi.c +++ b/drivers/scsi/libiscsi.c @@ -257,9 +257,11 @@ static int iscsi_prep_scsi_cmd_pdu(struct iscsi_task *task) itt_t itt; int rc; - rc = conn->session->tt->alloc_pdu(task, ISCSI_OP_SCSI_CMD); - if (rc) - return rc; + if (conn->session->tt->alloc_pdu) { + rc = conn->session->tt->alloc_pdu(task, ISCSI_OP_SCSI_CMD); + if (rc) + return rc; + } hdr = (struct iscsi_cmd *) task->hdr; itt = hdr->itt; memset(hdr, 0, sizeof(*hdr)); @@ -566,11 +568,14 @@ __iscsi_conn_send_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr, } else task->data_count = 0; - if (conn->session->tt->alloc_pdu(task, hdr->opcode)) { - iscsi_conn_printk(KERN_ERR, conn, "Could not allocate " - "pdu for mgmt task.\n"); - goto requeue_task; + if (conn->session->tt->alloc_pdu) { + if (conn->session->tt->alloc_pdu(task, hdr->opcode)) { + iscsi_conn_printk(KERN_ERR, conn, "Could not allocate " + "pdu for mgmt task.\n"); + goto requeue_task; + } } + itt = task->hdr->itt; task->hdr_len = sizeof(struct iscsi_hdr); memcpy(task->hdr, hdr, sizeof(struct iscsi_hdr)); |