This patch added netlink support for passthrough Persistent
Reservation information.
Signed-off-by: Zhu Lingshan <lszhu@xxxxxxxx>
---
drivers/target/target_core_user.c | 35 +++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c
index a89c866a755d..09a341e935a9 100644
--- a/drivers/target/target_core_user.c
+++ b/drivers/target/target_core_user.c
@@ -348,6 +348,7 @@ static struct nla_policy tcmu_attr_policy[TCMU_ATTR_MAX+1] = {
[TCMU_ATTR_CMD_STATUS] = { .type = NLA_S32 },
[TCMU_ATTR_DEVICE_ID] = { .type = NLA_U32 },
[TCMU_ATTR_SUPP_KERN_CMD_REPLY] = { .type = NLA_U8 },
+ [TCMU_ATTR_PR_INFO] = { .type = NLA_STRING },
};
static int tcmu_genl_cmd_done(struct genl_info *info, int completed_cmd)
@@ -389,6 +390,16 @@ static int tcmu_genl_cmd_done(struct genl_info *info, int completed_cmd)
nl_cmd->status = rc;
}
+ if (completed_cmd == TCMU_CMD_GET_PR_INFO) {
+ if (!info->attrs[TCMU_ATTR_PR_INFO]) {
+ ret = -EINVAL;
+ } else {
+ nla_strlcpy(udev->pr_info.pr_info_buf,
+ info->attrs[TCMU_ATTR_PR_INFO],
+ TCMU_PR_INFO_XATTR_MAX_SIZE);
+ }
+ }
+
spin_unlock(&udev->nl_cmd_lock);
if (!is_removed)
target_undepend_item(&dev->dev_group.cg_item);
@@ -413,6 +424,18 @@ static int tcmu_genl_reconfig_dev_done(struct sk_buff *skb,
return tcmu_genl_cmd_done(info, TCMU_CMD_RECONFIG_DEVICE);
}
+static int tcmu_genl_get_pr_info_done(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ return tcmu_genl_cmd_done(info, TCMU_CMD_GET_PR_INFO);
+}
+
+static int tcmu_genl_set_pr_info_done(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ return tcmu_genl_cmd_done(info, TCMU_CMD_SET_PR_INFO);
+}
+
static int tcmu_genl_set_features(struct sk_buff *skb, struct genl_info *info)
{
if (info->attrs[TCMU_ATTR_SUPP_KERN_CMD_REPLY]) {
@@ -450,6 +473,18 @@ static const struct genl_ops tcmu_genl_ops[] = {
.policy = tcmu_attr_policy,
.doit = tcmu_genl_reconfig_dev_done,
},
+ {
+ .cmd = TCMU_CMD_GET_PR_INFO_DONE,
+ .flags = GENL_ADMIN_PERM,
+ .policy = tcmu_attr_policy,
+ .doit = tcmu_genl_get_pr_info_done,
+ },
+ {
+ .cmd = TCMU_CMD_SET_PR_INFO_DONE,
+ .flags = GENL_ADMIN_PERM,
+ .policy = tcmu_attr_policy,
+ .doit = tcmu_genl_set_pr_info_done,
+ },
};
/* Our generic netlink family */
--
2.17.1
--
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