git: fefb98000ee0 - stable/12 - ocs_fc: Increase maximum supported SG elements to support larger transfer sizes.

The branch stable/12 has been updated by ram:

URL: https://cgit.FreeBSD.org/src/commit/?id=fefb98000ee05615900cb0fa0ac0e16bfba630ee

commit fefb98000ee05615900cb0fa0ac0e16bfba630ee
Author:     Ram Kishore Vegesna <ram@FreeBSD.org>
AuthorDate: 2021-09-24 09:05:03 +0000
Commit:     Ram Kishore Vegesna <ram@FreeBSD.org>
CommitDate: 2021-12-17 09:57:49 +0000

    ocs_fc: Increase maximum supported SG elements to support larger transfer sizes.
    
    Reported by: ken@kdm.org
    Reviewed by: mav, ken
    
    (cherry picked from commit 322dbb8ce8f63fd6f542309fd38324664ce8dd3f)
---
 sys/dev/ocs_fc/ocs_cam.c    | 14 +++++++++-----
 sys/dev/ocs_fc/ocs_device.h |  2 +-
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/sys/dev/ocs_fc/ocs_cam.c b/sys/dev/ocs_fc/ocs_cam.c
index 9f7b44dc2128..5f0d282477c9 100644
--- a/sys/dev/ocs_fc/ocs_cam.c
+++ b/sys/dev/ocs_fc/ocs_cam.c
@@ -1701,7 +1701,7 @@ ocs_target_io(struct ocs_softc *ocs, union ccb *ccb)
 		rc = ocs_scsi_send_resp(io, 0, &resp, ocs_scsi_target_io_cb, ccb);
 
 	} else if (xferlen != 0) {
-		ocs_scsi_sgl_t sgl[OCS_FC_MAX_SGL];
+		ocs_scsi_sgl_t *sgl;
 		int32_t sgl_count = 0;
 
 		io->tgt_io.state = OCS_CAM_IO_DATA;
@@ -1709,7 +1709,9 @@ ocs_target_io(struct ocs_softc *ocs, union ccb *ccb)
 		if (sendstatus)
 			io->tgt_io.sendresp = 1;
 
-		sgl_count = ocs_build_scsi_sgl(ocs, ccb, io, sgl, ARRAY_SIZE(sgl));
+		sgl = io->sgl;
+
+		sgl_count = ocs_build_scsi_sgl(ocs, ccb, io, sgl, io->sgl_allocated);
 		if (sgl_count > 0) {
 			if (cam_dir == CAM_DIR_IN) {
 				rc = ocs_scsi_send_rd_data(io, 0, NULL, sgl,
@@ -1783,7 +1785,7 @@ ocs_initiator_io(struct ocs_softc *ocs, union ccb *ccb)
 	struct ccb_hdr *ccb_h = &csio->ccb_h;
 	ocs_node_t *node = NULL;
 	ocs_io_t *io = NULL;
-	ocs_scsi_sgl_t sgl[OCS_FC_MAX_SGL];
+	ocs_scsi_sgl_t *sgl;
 	int32_t flags, sgl_count;
 
 	ocs_fcport	*fcp = NULL;
@@ -1830,8 +1832,9 @@ ocs_initiator_io(struct ocs_softc *ocs, union ccb *ccb)
 
 	csio->ccb_h.ccb_ocs_ptr = ocs;
 	csio->ccb_h.ccb_io_ptr  = io;
+	sgl = io->sgl;
 
-	sgl_count = ocs_build_scsi_sgl(ocs, ccb, io, sgl, ARRAY_SIZE(sgl));
+	sgl_count = ocs_build_scsi_sgl(ocs, ccb, io, sgl, io->sgl_allocated);
 	if (sgl_count < 0) {
 		ocs_scsi_io_free(io);
 		device_printf(ocs->dev, "%s: building SGL failed\n", __func__);
@@ -2070,7 +2073,8 @@ ocs_action(struct cam_sim *sim, union ccb *ccb)
 
 		/* Calculate the max IO supported
 		 * Worst case would be an OS page per SGL entry */
-		cpi->maxio = PAGE_SIZE * 
+
+		cpi->maxio = PAGE_SIZE *
 			(ocs_scsi_get_property(ocs, OCS_SCSI_MAX_SGL) - 1);
 
 		strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
diff --git a/sys/dev/ocs_fc/ocs_device.h b/sys/dev/ocs_fc/ocs_device.h
index 337737aeb944..906b8432bb36 100644
--- a/sys/dev/ocs_fc/ocs_device.h
+++ b/sys/dev/ocs_fc/ocs_device.h
@@ -56,7 +56,7 @@
  * @brief Defines the number of SGLs allocated on each IO object
  */
 #ifndef OCS_FC_MAX_SGL
-#define OCS_FC_MAX_SGL		128
+#define OCS_FC_MAX_SGL		256
 #endif