Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 1068be7b authored by Bryant G. Ly's avatar Bryant G. Ly Committed by Nicholas Bellinger
Browse files

tcmu: Add netlink for device reconfiguration 



This gives tcmu the ability to handle events that can cause
reconfiguration, such as resize, path changes, write_cache, etc...

Signed-off-by: default avatarBryant G. Ly <bryantly@linux.vnet.ibm.com>
Reviewed-By: default avatarMike Christie <mchristi@redhat.com>
Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
parent 9a8bb606

drivers/target/target_core_user.c

+12 −0
Original line number Diff line number Diff line
@@ -1562,6 +1562,7 @@ static ssize_t tcmu_emulate_write_cache_store(struct config_item *item, 
{

	struct se_dev_attrib *da = container_of(to_config_group(item),

					struct se_dev_attrib, da_group);

	struct tcmu_dev *udev = TCMU_DEV(da->da_dev);

	int val;

	int ret;
@@ -1570,6 +1571,17 @@ static ssize_t tcmu_emulate_write_cache_store(struct config_item *item, 
		return ret;



	da->emulate_write_cache = val;



	/* Check if device has been configured before */

	if (tcmu_dev_configured(udev)) {

		ret = tcmu_netlink_event(TCMU_CMD_RECONFIG_DEVICE,

					 udev->uio_info.name,

					 udev->uio_info.uio_dev->minor);

		if (ret) {

			pr_err("Unable to reconfigure device\n");

			return ret;

		}

	}

	return count;

}

CONFIGFS_ATTR(tcmu_, emulate_write_cache);

include/uapi/linux/target_core_user.h

+1 −0
Original line number Diff line number Diff line
@@ -130,6 +130,7 @@ enum tcmu_genl_cmd { 
	TCMU_CMD_UNSPEC,

	TCMU_CMD_ADDED_DEVICE,

	TCMU_CMD_REMOVED_DEVICE,

	TCMU_CMD_RECONFIG_DEVICE,

	__TCMU_CMD_MAX,

};

#define TCMU_CMD_MAX (__TCMU_CMD_MAX - 1)