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authorZhu Lingshan <lszhu@suse.com>2018-05-02 11:13:43 +0800
committerMartin K. Petersen <martin.petersen@oracle.com>2018-05-08 01:52:50 -0400
commit84e285062848d9bca20b60827d26b7c72101c184 (patch)
treefd56e258510ee44f97b85348b379c8d3812b119f /drivers/target
parent02ccfb54ba7e73c47ce401920af8cf7a0c7bcaca (diff)
downloadlinux-84e285062848d9bca20b60827d26b7c72101c184.tar.bz2
scsi: tcmu: refactor nl dev_size attr with new helpers
use new netlink events helpers tcmu_netlink_init() and tcmu_netlink_send() to refactor netlink event attribute TCMU_ATTR_DEV_SIZE(belongs to TCMU_CMD_RECONFIG_DEVICE) which is also dev_size in configFS. Signed-off-by: Zhu Lingshan <lszhu@suse.com> Acked-by: Mike Christie <mchristi@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/target')
-rw-r--r--drivers/target/target_core_user.c23
1 files changed, 21 insertions, 2 deletions
diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c
index 81495683ad3c..a4c50482199c 100644
--- a/drivers/target/target_core_user.c
+++ b/drivers/target/target_core_user.c
@@ -2303,6 +2303,26 @@ static ssize_t tcmu_dev_size_show(struct config_item *item, char *page)
return snprintf(page, PAGE_SIZE, "%zu\n", udev->dev_size);
}
+static int tcmu_send_dev_size_event(struct tcmu_dev *udev, u64 size)
+{
+ struct sk_buff *skb = NULL;
+ void *msg_header = NULL;
+ int ret = 0;
+
+ ret = tcmu_netlink_event_init(udev, TCMU_CMD_RECONFIG_DEVICE,
+ &skb, &msg_header);
+ if (ret < 0)
+ return ret;
+ ret = nla_put_u64_64bit(skb, TCMU_ATTR_DEV_SIZE,
+ size, TCMU_ATTR_PAD);
+ if (ret < 0) {
+ nlmsg_free(skb);
+ return ret;
+ }
+ return tcmu_netlink_event_send(udev, TCMU_CMD_RECONFIG_DEVICE,
+ &skb, &msg_header);
+}
+
static ssize_t tcmu_dev_size_store(struct config_item *item, const char *page,
size_t count)
{
@@ -2318,8 +2338,7 @@ static ssize_t tcmu_dev_size_store(struct config_item *item, const char *page,
/* Check if device has been configured before */
if (tcmu_dev_configured(udev)) {
- ret = tcmu_netlink_event(udev, TCMU_CMD_RECONFIG_DEVICE,
- TCMU_ATTR_DEV_SIZE, &val);
+ ret = tcmu_send_dev_size_event(udev, val);
if (ret) {
pr_err("Unable to reconfigure device\n");
return ret;