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| author | Zhu Lingshan <lszhu@suse.com> | 2018-05-02 11:13:43 +0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-05-08 01:52:50 -0400 |
| commit | 84e285062848d9bca20b60827d26b7c72101c184 (patch) | |
| tree | fd56e258510ee44f97b85348b379c8d3812b119f | |
| parent | 02ccfb54ba7e73c47ce401920af8cf7a0c7bcaca (diff) | |
| download | linux-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>
| -rw-r--r-- | drivers/target/target_core_user.c | 23 |
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; |