This patch added a function tcmu_send_set_pr_info_event() to store Persistent Reservation information into a TCMU device (for example, if we use a RBD device, the information will be stored in it's metadata), added it's wrapper function tcmu_set_dev_pr_info() as well.
Signed-off-by: Zhu Lingshan <[email protected]> --- drivers/target/target_core_user.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c index a1ed70d0988a..d368c656ef79 100644 --- a/drivers/target/target_core_user.c +++ b/drivers/target/target_core_user.c @@ -1698,6 +1698,26 @@ static int tcmu_send_get_pr_info_event(struct tcmu_dev *udev) &skb, &msg_header); } +static int tcmu_send_set_pr_info_event(struct tcmu_dev *udev, char *buf) +{ + struct sk_buff *skb = NULL; + void *msg_header = NULL; + int ret = 0; + + ret = tcmu_netlink_event_init(udev, TCMU_CMD_SET_PR_INFO, + &skb, &msg_header); + if (ret < 0) + return ret; + ret = nla_put_string(skb, TCMU_ATTR_PR_INFO, buf); + if (ret < 0) { + nlmsg_free(skb); + return ret; + } + + return tcmu_netlink_event_send(udev, TCMU_CMD_SET_PR_INFO, + &skb, &msg_header); +} + static int tcmu_update_uio_info(struct tcmu_dev *udev) { struct tcmu_hba *hba = udev->hba->hba_ptr; @@ -1740,6 +1760,15 @@ static int tcmu_get_dev_pr_info(struct tcmu_dev *udev, int *val_len) return ret; } +/* + * This function will store PR INFO(a string) to a TCMU + * device metadata. + */ +static int tcmu_set_dev_pr_info(struct tcmu_dev *udev, void *val) +{ + return tcmu_send_set_pr_info_event(udev, val); +} + static int tcmu_configure_device(struct se_device *dev) { struct tcmu_dev *udev = TCMU_DEV(dev); -- 2.17.1
