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net: bridge: vlan: add rtm definitions and dump support

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This patch adds vlan rtm definitions:
 - NEWVLAN: to be used for creating vlans, setting options and
   notifications
 - DELVLAN: to be used for deleting vlans
 - GETVLAN: used for dumping vlan information

Dumping vlans which can span multiple messages is added now with basic
information (vid and flags). We use nlmsg_parse() to validate the header
length in order to be able to extend the message with filtering
attributes later.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikolay Aleksandrov
2020-01-14 19:56:09 +02:00
committed by David S. Miller
parent 8f4cc940a1
commit 8dcea18708
6 changed files with 203 additions and 1 deletions
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5
security/selinux/nlmsgtab.c
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@@ -85,6 +85,9 @@ static const struct nlmsg_perm nlmsg_route_perms[] =
{ RTM_GETNEXTHOP, NETLINK_ROUTE_SOCKET__NLMSG_READ },
{ RTM_NEWLINKPROP, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_DELLINKPROP, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_NEWVLAN, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_DELVLAN, NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
{ RTM_GETVLAN, NETLINK_ROUTE_SOCKET__NLMSG_READ },
};
static const struct nlmsg_perm nlmsg_tcpdiag_perms[] =
@@ -168,7 +171,7 @@ int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm)
* structures at the top of this file with the new mappings
* before updating the BUILD_BUG_ON() macro!
*/
BUILD_BUG_ON(RTM_MAX != (RTM_NEWLINKPROP + 3));
BUILD_BUG_ON(RTM_MAX != (RTM_NEWVLAN + 3));
err = nlmsg_perm(nlmsg_type, perm, nlmsg_route_perms,
sizeof(nlmsg_route_perms));
break;