rtnetlink: Compute and store minimum ifinfo dump size
The message size allocated for rtnl ifinfo dumps was limited to
a single page. This is not enough for additional interface info
available with devices that support SR-IOV and caused a bug in
which VF info would not be displayed if more than approximately
40 VFs were created per interface.
Implement a new function pointer for the rtnl_register service that will
calculate the amount of data required for the ifinfo dump and allocate
enough data to satisfy the request.
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 3e36942..05838c7 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -4727,16 +4727,20 @@
if (err < 0)
goto errout_af;
- err = __rtnl_register(PF_INET6, RTM_GETLINK, NULL, inet6_dump_ifinfo);
+ err = __rtnl_register(PF_INET6, RTM_GETLINK, NULL, inet6_dump_ifinfo,
+ NULL);
if (err < 0)
goto errout;
/* Only the first call to __rtnl_register can fail */
- __rtnl_register(PF_INET6, RTM_NEWADDR, inet6_rtm_newaddr, NULL);
- __rtnl_register(PF_INET6, RTM_DELADDR, inet6_rtm_deladdr, NULL);
- __rtnl_register(PF_INET6, RTM_GETADDR, inet6_rtm_getaddr, inet6_dump_ifaddr);
- __rtnl_register(PF_INET6, RTM_GETMULTICAST, NULL, inet6_dump_ifmcaddr);
- __rtnl_register(PF_INET6, RTM_GETANYCAST, NULL, inet6_dump_ifacaddr);
+ __rtnl_register(PF_INET6, RTM_NEWADDR, inet6_rtm_newaddr, NULL, NULL);
+ __rtnl_register(PF_INET6, RTM_DELADDR, inet6_rtm_deladdr, NULL, NULL);
+ __rtnl_register(PF_INET6, RTM_GETADDR, inet6_rtm_getaddr,
+ inet6_dump_ifaddr, NULL);
+ __rtnl_register(PF_INET6, RTM_GETMULTICAST, NULL,
+ inet6_dump_ifmcaddr, NULL);
+ __rtnl_register(PF_INET6, RTM_GETANYCAST, NULL,
+ inet6_dump_ifacaddr, NULL);
ipv6_addr_label_rtnl_register();
