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Commit 6192d4e6 authored by Sagi Grimberg's avatar Sagi Grimberg Committed by Roland Dreier
Browse files

IB/iser: Publish T10-PI support to SCSI midlayer 



After allocating a scsi_host we set protection types and guard type
supported.

Signed-off-by: default avatarSagi Grimberg <sagig@mellanox.com>
Signed-off-by: default avatarAlex Tabachnik <alext@mellanox.com>
Signed-off-by: default avatarRoland Dreier <roland@purestorage.com>
parent 0a7a08ad

drivers/infiniband/ulp/iser/iscsi_iser.c

+22 −1
Original line number Diff line number Diff line
@@ -435,6 +435,17 @@ static void iscsi_iser_session_destroy(struct iscsi_cls_session *cls_session) 
	iscsi_host_free(shost);

}



static inline unsigned int

iser_dif_prot_caps(int prot_caps)

{

	return ((prot_caps & IB_PROT_T10DIF_TYPE_1) ? SHOST_DIF_TYPE1_PROTECTION |

						      SHOST_DIX_TYPE1_PROTECTION : 0) |

	       ((prot_caps & IB_PROT_T10DIF_TYPE_2) ? SHOST_DIF_TYPE2_PROTECTION |

						      SHOST_DIX_TYPE2_PROTECTION : 0) |

	       ((prot_caps & IB_PROT_T10DIF_TYPE_3) ? SHOST_DIF_TYPE3_PROTECTION |

						      SHOST_DIX_TYPE3_PROTECTION : 0);

}



static struct iscsi_cls_session *

iscsi_iser_session_create(struct iscsi_endpoint *ep,

			  uint16_t cmds_max, uint16_t qdepth,
@@ -459,8 +470,18 @@ iscsi_iser_session_create(struct iscsi_endpoint *ep, 
	 * older userspace tools (before 2.0-870) did not pass us

	 * the leading conn's ep so this will be NULL;

	 */

	if (ep)

	if (ep) {

		ib_conn = ep->dd_data;

		if (ib_conn->pi_support) {

			u32 sig_caps = ib_conn->device->dev_attr.sig_prot_cap;



			scsi_host_set_prot(shost, iser_dif_prot_caps(sig_caps));

			if (iser_pi_guard)

				scsi_host_set_guard(shost, SHOST_DIX_GUARD_IP);

			else

				scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC);

		}

	}



	if (iscsi_host_add(shost,

			   ep ? ib_conn->device->ib_device->dma_device : NULL))