[PATCH iproute2-next 4/6] libnetlink: add bridge vlan dump request helper

[Nikolay Aleksandrov]

From: Nikolay Aleksandrov <niko...@nvidia.com>

Add rtnl bridge vlan dump request helper which will be used to retrieve
bridge vlan information and options.

Signed-off-by: Nikolay Aleksandrov <niko...@nvidia.com>
---
 include/libnetlink.h |  2 ++
 lib/libnetlink.c     | 19 +++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/include/libnetlink.h b/include/libnetlink.h
index e8ed5d7fb495..da96c69b9ede 100644
--- a/include/libnetlink.h
+++ b/include/libnetlink.h
@@ -69,6 +69,8 @@ int rtnl_neightbldump_req(struct rtnl_handle *rth, int family)
        __attribute__((warn_unused_result));
 int rtnl_mdbdump_req(struct rtnl_handle *rth, int family)
        __attribute__((warn_unused_result));
+int rtnl_brvlandump_req(struct rtnl_handle *rth, int family, __u32 dump_flags)
+       __attribute__((warn_unused_result));
 int rtnl_netconfdump_req(struct rtnl_handle *rth, int family)
        __attribute__((warn_unused_result));
 
diff --git a/lib/libnetlink.c b/lib/libnetlink.c
index 6885087b34f9..2f2cc1fe0a61 100644
--- a/lib/libnetlink.c
+++ b/lib/libnetlink.c
@@ -450,6 +450,25 @@ int rtnl_mdbdump_req(struct rtnl_handle *rth, int family)
        return send(rth->fd, &req, sizeof(req), 0);
 }
 
+int rtnl_brvlandump_req(struct rtnl_handle *rth, int family, __u32 dump_flags)
+{
+       struct {
+               struct nlmsghdr nlh;
+               struct br_vlan_msg bvm;
+               char buf[256];
+       } req = {
+               .nlh.nlmsg_len = NLMSG_LENGTH(sizeof(struct br_vlan_msg)),
+               .nlh.nlmsg_type = RTM_GETVLAN,
+               .nlh.nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST,
+               .nlh.nlmsg_seq = rth->dump = ++rth->seq,
+               .bvm.family = family,
+       };
+
+       addattr32(&req.nlh, sizeof(req), BRIDGE_VLANDB_DUMP_FLAGS, dump_flags);
+
+       return send(rth->fd, &req, sizeof(req), 0);
+}
+
 int rtnl_netconfdump_req(struct rtnl_handle *rth, int family)
 {
        struct {
-- 
2.30.2