From 02ccfb54ba7e73c47ce401920af8cf7a0c7bcaca Mon Sep 17 00:00:00 2001 From: Zhu Lingshan Date: Wed, 2 May 2018 11:13:42 +0800 Subject: [PATCH] scsi: tcmu: refactor nl dev_cfg attr with new nl helpers use new netlink events helpers tcmu_netlink_init() and tcmu_netlink_send() to refactor netlink event attribute TCMU_ATTR_DEV_CFG(belongs to TCMU_CMD_RECONFIG_DEVICE) which is also dev_config in configFS. Signed-off-by: Zhu Lingshan Acked-by: Mike Christie Signed-off-by: Martin K. Petersen --- drivers/target/target_core_user.c | 24 ++++++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c index c621364cffc5..81495683ad3c 100644 --- a/drivers/target/target_core_user.c +++ b/drivers/target/target_core_user.c @@ -2241,6 +2241,27 @@ static ssize_t tcmu_dev_config_show(struct config_item *item, char *page) return snprintf(page, PAGE_SIZE, "%s\n", udev->dev_config); } +static int tcmu_send_dev_config_event(struct tcmu_dev *udev, + const char *reconfig_data) +{ + 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_string(skb, TCMU_ATTR_DEV_CFG, reconfig_data); + 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_config_store(struct config_item *item, const char *page, size_t count) { @@ -2255,8 +2276,7 @@ static ssize_t tcmu_dev_config_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_CFG, page); + ret = tcmu_send_dev_config_event(udev, page); if (ret) { pr_err("Unable to reconfigure device\n"); return ret;