[SCSI] lpfc 8.3.7: Fix FC protocol errors

Fix FC protocol errors:
- Fix multi-frame unsolicited sequences not queued properly
- Fix frames for unsolicited sequences not being associated with sequence.
- Fix unsolicited frame buffer sizes are not set properly
- Fix Sequence count for unsolicited frame headers not byte swapped.
- Fix Multi-frame sequence response frames go to wrong DID.

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

2 files changed, 15 insertions, 8 deletions

diff --git a/drivers/scsi/lpfc/lpfc_hw4.h b/drivers/scsi/lpfc/lpfc_hw4.h
index 1585148a17e5..09c8e362aee3 100644
--- a/drivers/scsi/lpfc/lpfc_hw4.h
+++ b/drivers/scsi/lpfc/lpfc_hw4.h
@@ -1013,7 +1013,7 @@ struct lpfc_mbx_wq_destroy {
 };
 
 #define LPFC_HDR_BUF_SIZE 128
-#define LPFC_DATA_BUF_SIZE 4096
+#define LPFC_DATA_BUF_SIZE 2048
 struct rq_context {
         uint32_t word0;
 #define lpfc_rq_context_rq_size_SHIFT   16
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 7935667b81a5..50f72bf18256 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -5848,7 +5848,6 @@ lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
                                         iocbq->iocb.un.ulpWord[3]);
                 wqe->generic.word3 = 0;
                 bf_set(wqe_rcvoxid, &wqe->generic, iocbq->iocb.ulpContext);
-                bf_set(wqe_xc, &wqe->generic, 1);
                 /* The entire sequence is transmitted for this IOCB */
                 xmit_len = total_len;
                 cmnd = CMD_XMIT_SEQUENCE64_CR;
@@ -10944,7 +10943,8 @@ lpfc_fc_frame_add(struct lpfc_vport *vport, struct hbq_dmabuf *dmabuf)
                 return dmabuf;
         }
         temp_hdr = seq_dmabuf->hbuf.virt;
-        if (new_hdr->fh_seq_cnt < temp_hdr->fh_seq_cnt) {
+        if (be16_to_cpu(new_hdr->fh_seq_cnt) <
+                be16_to_cpu(temp_hdr->fh_seq_cnt)) {
                 list_del_init(&seq_dmabuf->hbuf.list);
                 list_add_tail(&dmabuf->hbuf.list, &vport->rcv_buffer_list);
                 list_add_tail(&dmabuf->dbuf.list, &seq_dmabuf->dbuf.list);
@@ -10955,6 +10955,11 @@ lpfc_fc_frame_add(struct lpfc_vport *vport, struct hbq_dmabuf *dmabuf)
         list_move_tail(&seq_dmabuf->hbuf.list, &vport->rcv_buffer_list);
         seq_dmabuf->time_stamp = jiffies;
         lpfc_update_rcv_time_stamp(vport);
+        if (list_empty(&seq_dmabuf->dbuf.list)) {
+                temp_hdr = dmabuf->hbuf.virt;
+                list_add_tail(&dmabuf->dbuf.list, &seq_dmabuf->dbuf.list);
+                return seq_dmabuf;
+        }
         /* find the correct place in the sequence to insert this frame */
         list_for_each_entry_reverse(d_buf, &seq_dmabuf->dbuf.list, list) {
                 temp_dmabuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
@@ -10963,7 +10968,8 @@ lpfc_fc_frame_add(struct lpfc_vport *vport, struct hbq_dmabuf *dmabuf)
                  * If the frame's sequence count is greater than the frame on
                  * the list then insert the frame right after this frame
                  */
-                if (new_hdr->fh_seq_cnt > temp_hdr->fh_seq_cnt) {
+                if (be16_to_cpu(new_hdr->fh_seq_cnt) >
+                        be16_to_cpu(temp_hdr->fh_seq_cnt)) {
                         list_add(&dmabuf->dbuf.list, &temp_dmabuf->dbuf.list);
                         return seq_dmabuf;
                 }
@@ -11210,7 +11216,7 @@ lpfc_seq_complete(struct hbq_dmabuf *dmabuf)
                 seq_dmabuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
                 hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
                 /* If there is a hole in the sequence count then fail. */
-                if (++seq_count != hdr->fh_seq_cnt)
+                if (++seq_count != be16_to_cpu(hdr->fh_seq_cnt))
                         return 0;
                 fctl = (hdr->fh_f_ctl[0] << 16 |
                         hdr->fh_f_ctl[1] << 8 |
@@ -11242,6 +11248,7 @@ lpfc_prep_seq(struct lpfc_vport *vport, struct hbq_dmabuf *seq_dmabuf)
         struct lpfc_iocbq *first_iocbq, *iocbq;
         struct fc_frame_header *fc_hdr;
         uint32_t sid;
+        struct ulp_bde64 *pbde;
 
         fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
         /* remove from receive buffer list */
@@ -11283,8 +11290,9 @@ lpfc_prep_seq(struct lpfc_vport *vport, struct hbq_dmabuf *seq_dmabuf)
                 if (!iocbq->context3) {
                         iocbq->context3 = d_buf;
                         iocbq->iocb.ulpBdeCount++;
-                        iocbq->iocb.unsli3.rcvsli3.bde2.tus.f.bdeSize =
-                                                        LPFC_DATA_BUF_SIZE;
+                        pbde = (struct ulp_bde64 *)
+                                        &iocbq->iocb.unsli3.sli3Words[4];
+                        pbde->tus.f.bdeSize = LPFC_DATA_BUF_SIZE;
                         first_iocbq->iocb.unsli3.rcvsli3.acc_len +=
                                 bf_get(lpfc_rcqe_length,
                                        &seq_dmabuf->cq_event.cqe.rcqe_cmpl);
@@ -11407,7 +11415,6 @@ lpfc_sli4_handle_received_buffer(struct lpfc_hba *phba,
                  * frame to be freed when it is finished.
                  **/
                 lpfc_sli_hbqbuf_fill_hbqs(phba, LPFC_ELS_HBQ, 1);
-                dmabuf->tag = -1;
                 return;
         }
         /* Send the complete sequence to the upper layer protocol */