From: Sonia Sharma <sharmaso@whamcloud.com>
Date: Fri, 29 Mar 2019 08:19:35 +0000 (-0400)
Subject: LU-9121 lnet: ioctl handler for "delete policy"
X-Git-Tag: 2.14.51~177^2^2~7
X-Git-Url: https://git.whamcloud.com/gitweb?a=commitdiff_plain;h=8258e7235c7047b927b02acaf67ad5b69a62e025;p=fs%2Flustre-release.git

LU-9121 lnet: ioctl handler for "delete policy"

The ioctl handler for "delete policy" deletes
a policy with the given index value. It
returns 0 if a policy with that index is found
else it returns -EINVAL.

Change-Id: I037c6808e71e5c13ccf46c243145b0ce6f1229cb
Test-Parameters: trivial testlist=lnet-selftest,sanity-lnet
Signed-off-by: Sonia Sharma <sharmaso@whamcloud.com>
Signed-off-by: Amir Shehata <ashehata@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/34552
Reviewed-by: Serguei Smirnov <ssmirnov@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Chris Horn <chris.horn@hpe.com>
---

diff --git a/lnet/include/uapi/linux/lnet/libcfs_ioctl.h b/lnet/include/uapi/linux/lnet/libcfs_ioctl.h
index 2ac0c31..d7bcd8d 100644
--- a/lnet/include/uapi/linux/lnet/libcfs_ioctl.h
+++ b/lnet/include/uapi/linux/lnet/libcfs_ioctl.h
@@ -150,7 +150,8 @@ struct libcfs_ioctl_data {
 #define IOC_LIBCFS_GET_LOCAL_HSTATS	   _IOWR(IOC_LIBCFS_TYPE, 103, IOCTL_CONFIG_SIZE)
 #define IOC_LIBCFS_GET_RECOVERY_QUEUE	   _IOWR(IOC_LIBCFS_TYPE, 104, IOCTL_CONFIG_SIZE)
 #define IOC_LIBCFS_ADD_UDSP		   _IOWR(IOC_LIBCFS_TYPE, 105, IOCTL_CONFIG_SIZE)
-#define IOC_LIBCFS_MAX_NR					  105
+#define IOC_LIBCFS_DEL_UDSP		   _IOWR(IOC_LIBCFS_TYPE, 106, IOCTL_CONFIG_SIZE)
+#define IOC_LIBCFS_MAX_NR					  106
 
 extern int libcfs_ioctl_data_adjust(struct libcfs_ioctl_data *data);
 
diff --git a/lnet/lnet/api-ni.c b/lnet/lnet/api-ni.c
index 2e9ba1b..257f15e 100644
--- a/lnet/lnet/api-ni.c
+++ b/lnet/lnet/api-ni.c
@@ -4207,6 +4207,26 @@ LNetCtl(unsigned int cmd, void *arg)
 		return rc;
 	}
 
+	case IOC_LIBCFS_DEL_UDSP: {
+		struct lnet_ioctl_udsp *ioc_udsp = arg;
+		int idx = ioc_udsp->iou_idx;
+
+		if (ioc_udsp->iou_hdr.ioc_len < sizeof(*ioc_udsp))
+			return -EINVAL;
+
+		mutex_lock(&the_lnet.ln_api_mutex);
+		rc = lnet_udsp_del_policy(idx);
+		if (!rc) {
+			rc = lnet_udsp_apply_policies(NULL, false);
+			CDEBUG(D_NET, "policy re-application returned %d\n",
+			       rc);
+			rc = 0;
+		}
+		mutex_unlock(&the_lnet.ln_api_mutex);
+
+		return rc;
+	}
+
 	default:
 		ni = lnet_net2ni_addref(data->ioc_net);
 		if (ni == NULL)