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Message-Id: <e5c07339477d8bc50c080a14c2ec144132ea84d8.1433094369.git.shm@cumulusnetworks.com>
Date: Mon, 8 Jun 2015 11:35:35 -0700
From: Shrijeet Mukherjee <shm@...ulusnetworks.com>
To: hannes@...essinduktion.org, nicolas.dichtel@...nd.com,
dsahern@...il.com, ebiederm@...ssion.com, hadi@...atatu.com,
davem@...emloft.net, stephen@...workplumber.org,
netdev@...r.kernel.org
Cc: roopa@...ulusnetworks.com, gospo@...ulusnetworks.com,
jtoppins@...ulusnetworks.com, nikolay@...ulusnetworks.com,
Shrijeet Mukherjee <shm@...ulusnetworks.com>
Subject: [RFC iproute2] Add the ability to create a VRF device and specify it's table binding.
From: Shrijeet Mukherjee <shm@...ulusnetworks.com>
Modified from the iplink_vlan implementation.
Signed-off-by: Shrijeet Mukherjee <shm@...ulusnetworks.com>
---
include/linux/if_link.h | 8 ++++
ip/Makefile | 2 +-
ip/iplink_vrf.c | 93 +++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 102 insertions(+), 1 deletion(-)
create mode 100644 ip/iplink_vrf.c
diff --git a/include/linux/if_link.h b/include/linux/if_link.h
index 3d0d613..25bf881 100644
--- a/include/linux/if_link.h
+++ b/include/linux/if_link.h
@@ -337,6 +337,14 @@ enum macvlan_macaddr_mode {
#define MACVLAN_FLAG_NOPROMISC 1
+/* VRF section */
+enum {
+ IFLA_VRF_UNSPEC,
+ IFLA_VRF_TABLE,
+ __IFLA_VRF_MAX
+};
+
+#define IFLA_VRF_MAX (__IFLA_VRF_MAX - 1)
/* IPVLAN section */
enum {
IFLA_IPVLAN_UNSPEC,
diff --git a/ip/Makefile b/ip/Makefile
index 2c742f3..83536d6 100644
--- a/ip/Makefile
+++ b/ip/Makefile
@@ -6,7 +6,7 @@ IPOBJ=ip.o ipaddress.o ipaddrlabel.o iproute.o iprule.o ipnetns.o \
iplink_macvlan.o iplink_macvtap.o ipl2tp.o link_vti.o link_vti6.o \
iplink_vxlan.o tcp_metrics.o iplink_ipoib.o ipnetconf.o link_ip6tnl.o \
link_iptnl.o link_gre6.o iplink_bond.o iplink_bond_slave.o iplink_hsr.o \
- iplink_bridge.o iplink_bridge_slave.o ipfou.o iplink_ipvlan.o
+ iplink_bridge.o iplink_bridge_slave.o ipfou.o iplink_ipvlan.o iplink_vrf.o
RTMONOBJ=rtmon.o
diff --git a/ip/iplink_vrf.c b/ip/iplink_vrf.c
new file mode 100644
index 0000000..58443a5
--- /dev/null
+++ b/ip/iplink_vrf.c
@@ -0,0 +1,93 @@
+/* iplink_vrf.c VRF device support
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Authors: Shrijeet Mukherjee <shm@...ulusnetworks.com>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <linux/if_link.h>
+
+#include "rt_names.h"
+#include "utils.h"
+#include "ip_common.h"
+
+static void vrf_explain(FILE *f)
+{
+ fprintf(f, "Usage: ... vrf table TABLEID \n");
+}
+
+static void explain(void)
+{
+ vrf_explain(stderr);
+}
+
+static int table_arg(void)
+{
+ fprintf(stderr,"Error: argument of \"table\" must be 0-32767 and currently unused\n");
+ return -1;
+}
+
+static int vrf_parse_opt(struct link_util *lu, int argc, char **argv,
+ struct nlmsghdr *n)
+{
+ while (argc > 0) {
+ if (matches(*argv, "table") == 0) {
+ __u32 table = 0;
+ NEXT_ARG();
+
+ table = atoi(*argv);
+ if (table < 0 || table > 32767)
+ return table_arg();
+ /* XXX need a table in-use check here */
+ fprintf(stderr, "adding table %d\n", table);
+ addattr32(n, 1024, IFLA_VRF_TABLE, table);
+ } else if (matches(*argv, "help") == 0) {
+ explain();
+ return -1;
+ } else {
+ fprintf(stderr, "vrf: unknown option \"%s\"?\n",
+ *argv);
+ explain();
+ return -1;
+ }
+ argc--, argv++;
+ }
+
+ return 0;
+}
+
+static void vrf_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
+{
+
+ if (!tb)
+ return;
+
+ if (tb[IFLA_VRF_TABLE]) {
+ if (RTA_PAYLOAD(tb[IFLA_VRF_TABLE]) == sizeof(__u32)) {
+ __u32 table = rta_getattr_u32(tb[IFLA_VRF_TABLE]);
+
+ fprintf(f, " table %d ", table);
+ }
+ }
+}
+
+static void vrf_print_help(struct link_util *lu, int argc, char **argv,
+ FILE *f)
+{
+ vrf_explain(f);
+}
+
+struct link_util vrf_link_util = {
+ .id = "vrf",
+ .maxattr = IFLA_VRF_MAX,
+ .parse_opt = vrf_parse_opt,
+ .print_opt = vrf_print_opt,
+ .print_help = vrf_print_help,
+};
--
1.7.10.4
--
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