netdev - [PATCH iproute2-next 05/11] libnetlink: Convert GETNETCONF dumps to use rtnl_netconfdump

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Date:   Sat, 29 Sep 2018 10:59:25 -0700
From:   David Ahern <dsahern@...nel.org>
To:     netdev@...r.kernel.org
Cc:     stephen@...workplumber.org, christian@...uner.io,
        David Ahern <dsahern@...il.com>
Subject: [PATCH iproute2-next 05/11] libnetlink: Convert GETNETCONF dumps to use rtnl_netconfdump_req

From: David Ahern <dsahern@...il.com>

Add rtnl_netconfdump_req for netconf dumps using the proper netconfmsg
as the header. Convert existing RTM_GETNETCONF dumps to use it.

Signed-off-by: David Ahern <dsahern@...il.com>
---
 include/libnetlink.h |  2 ++
 ip/ipnetconf.c       |  3 +--
 lib/libnetlink.c     | 16 ++++++++++++++++
 3 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/include/libnetlink.h b/include/libnetlink.h
index 8f2b2935074a..7e9ef640c704 100644
--- a/include/libnetlink.h
+++ b/include/libnetlink.h
@@ -55,6 +55,8 @@ int rtnl_routedump_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_netconfdump_req(struct rtnl_handle *rth, int family)
+	__attribute__((warn_unused_result));
 
 int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type)
 	__attribute__((warn_unused_result));
diff --git a/ip/ipnetconf.c b/ip/ipnetconf.c
index 04c4d60807b1..21822e367e11 100644
--- a/ip/ipnetconf.c
+++ b/ip/ipnetconf.c
@@ -210,8 +210,7 @@ static int do_show(int argc, char **argv)
 	} else {
 		rth.flags = RTNL_HANDLE_F_SUPPRESS_NLERR;
 dump:
-		if (rtnl_wilddump_request(&rth, filter.family,
-					  RTM_GETNETCONF) < 0) {
+		if (rtnl_netconfdump_req(&rth, filter.family) < 0) {
 			perror("Cannot send dump request");
 			exit(1);
 		}
diff --git a/lib/libnetlink.c b/lib/libnetlink.c
index 51ea457cd31a..e5cb275faf09 100644
--- a/lib/libnetlink.c
+++ b/lib/libnetlink.c
@@ -265,6 +265,22 @@ int rtnl_mdbdump_req(struct rtnl_handle *rth, int family)
 	return send(rth->fd, &req, sizeof(req), 0);
 }
 
+int rtnl_netconfdump_req(struct rtnl_handle *rth, int family)
+{
+	struct {
+		struct nlmsghdr nlh;
+		struct netconfmsg ncm;
+	} req = {
+		.nlh.nlmsg_len = sizeof(req),
+		.nlh.nlmsg_type = RTM_GETNETCONF,
+		.nlh.nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST,
+		.nlh.nlmsg_seq = rth->dump = ++rth->seq,
+		.ncm.ncm_family = family,
+	};
+
+	return send(rth->fd, &req, sizeof(req), 0);
+}
+
 int rtnl_wilddump_request(struct rtnl_handle *rth, int family, int type)
 {
 	return rtnl_wilddump_req_filter(rth, family, type, RTEXT_FILTER_VF);
-- 
2.11.0