lpfc: Fix external loopback failure.

Fix external loopback failure.

Rx sequence reassembly was incorrect.

Signed-off-by: Dick Kennedy <[e-mail]>
Signed-off-by: James Smart <[e-mail]>
Reviewed-by: Hannes Reinicke <[e-mail]>
Signed-off-by: Martin K. Petersen <[e-mail]>

drivers/scsi/lpfc/lpfc_sli.c

···
 	struct lpfc_dmabuf *h_buf;
 	struct hbq_dmabuf *seq_dmabuf = NULL;
 	struct hbq_dmabuf *temp_dmabuf = NULL;
+	uint8_t	found = 0;
 
 	INIT_LIST_HEAD(&dmabuf->dbuf.list);
 	dmabuf->time_stamp = jiffies;
 	new_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
+
 	/* Use the hdr_buf to find the sequence that this frame belongs to */
 	list_for_each_entry(h_buf, &vport->rcv_buffer_list, list) {
 		temp_hdr = (struct fc_frame_header *)h_buf->virt;
···
 		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) {
+	d_buf = list_entry(seq_dmabuf->dbuf.list.prev, typeof(*d_buf), list);
+	while (!found) {
 		temp_dmabuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
 		temp_hdr = (struct fc_frame_header *)temp_dmabuf->hbuf.virt;
 		/*
···
 		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;
+			found = 1;
+			break;
 		}
+
+		if (&d_buf->list == &seq_dmabuf->dbuf.list)
+			break;
+		d_buf = list_entry(d_buf->list.prev, typeof(*d_buf), list);
 	}
+
+	if (found)
+		return seq_dmabuf;
 	return NULL;
 }