RFC3270 mandates that iSCSI PDUs are padded to the closest integer
number of four byte words. Enhance the iser code to support that
on both the TX/RX flows.
Signed-off-by: Or Gerlitz <ogerl...@mellanox.co.il>
---
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c
b/drivers/infiniband/ulp/iser/iscsi_iser.c
index 8db008d..9c61b9c 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.c
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.c
@@ -101,13 +101,17 @@ iscsi_iser_recv(struct iscsi_conn *conn,
/* verify PDU length */
datalen = ntoh24(hdr->dlength);
- if (datalen != rx_data_len) {
- printk(KERN_ERR "iscsi_iser: datalen %d (hdr) != %d (IB) \n",
- datalen, rx_data_len);
+ if (datalen > rx_data_len || (datalen + 4) < rx_data_len) {
+ iser_err("wrong datalen %d (hdr), %d (IB)\n",
+ datalen, rx_data_len);
rc = ISCSI_ERR_DATALEN;
goto error;
}
+ if (datalen != rx_data_len)
+ iser_dbg("aligned datalen (%d) hdr, %d (IB)\n",
+ datalen, rx_data_len);
+
/* read AHS */
ahslen = hdr->hlength * 4;
diff --git a/drivers/infiniband/ulp/iser/iser_initiator.c
b/drivers/infiniband/ulp/iser/iser_initiator.c
index 95a08a8..6ea28a6 100644
--- a/drivers/infiniband/ulp/iser/iser_initiator.c
+++ b/drivers/infiniband/ulp/iser/iser_initiator.c
@@ -412,7 +412,7 @@ int iser_send_control(struct iscsi_conn *conn,
memcpy(iser_conn->ib_conn->login_buf, task->data,
task->data_count);
tx_dsg->addr = iser_conn->ib_conn->login_dma;
- tx_dsg->length = data_seg_len;
+ tx_dsg->length = task->data_count;
tx_dsg->lkey = device->mr->lkey;
mdesc->num_sge = 2;
}
--
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