if_link: Add an additional parameter to ifla_vf_info for RSS querying

Add configuration setting for drivers to allow/block an RSS Redirection
Table and a Hash Key querying for discrete VFs.

On some devices VF share the mentioned above information with PF and
querying it may adduce a theoretical security risk. We want to let a
system administrator to decide if he/she wants to take this risk or not.

Signed-off-by: Vlad Zolotarov <vladz@cloudius-systems.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index 7ffb18df01ca..d9cd19214b98 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -465,6 +465,9 @@ enum {
         IFLA_VF_SPOOFCHK,       /* Spoof Checking on/off switch */
         IFLA_VF_LINK_STATE,     /* link state enable/disable/auto switch */
         IFLA_VF_RATE,           /* Min and Max TX Bandwidth Allocation */
+        IFLA_VF_RSS_QUERY_EN,   /* RSS Redirection Table and Hash Key query
+                                 * on/off switch
+                                 */
         __IFLA_VF_MAX,
 };
 
@@ -509,6 +512,11 @@ struct ifla_vf_link_state {
         __u32 link_state;
 };
 
+struct ifla_vf_rss_query_en {
+        __u32 vf;
+        __u32 setting;
+};
+
 /* VF ports management section
  *
  *      Nested layout of set/get msg is: