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Date: Fri, 8 Nov 2013 20:34:36 +0100
From: Arvid Brodin <arvid.brodin@...n.com>
To: "netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC: Stephen Hemminger <shemminger@...tta.com>,
Arvid Brodin <Arvid.Brodin@...n.com>
Subject: [PATCH IPROUTE] ip: Add HSR support
This patch adds basic support for High-Availability Seamless
Redundancy (HSR) network devices.
Signed-off-by: Arvid Brodin <arvid.brodin@...n.com>
---
include/linux/if_link.h | 14 ++++++
ip/Makefile | 2 +-
ip/iplink_hsr.c | 127 ++++++++++++++++++++++++++++++++++++++++++++++++
man/man8/ip-link.8.in | 1 +
4 files changed, 143 insertions(+), 1 deletion(-)
create mode 100644 ip/iplink_hsr.c
diff --git a/include/linux/if_link.h b/include/linux/if_link.h
index ee4f2ba..1f429f1 100644
--- a/include/linux/if_link.h
+++ b/include/linux/if_link.h
@@ -468,4 +468,18 @@ enum {
#define IFLA_IPOIB_MAX (__IFLA_IPOIB_MAX - 1)
+/* HSR section */
+
+enum {
+ IFLA_HSR_UNSPEC,
+ IFLA_HSR_SLAVE1,
+ IFLA_HSR_SLAVE2,
+ IFLA_HSR_MULTICAST_SPEC, /* Last byte of supervision addr */
+ IFLA_HSR_SUPERVISION_ADDR, /* Supervision frame multicast addr */
+ IFLA_HSR_SEQ_NR,
+ __IFLA_HSR_MAX,
+};
+
+#define IFLA_HSR_MAX (__IFLA_HSR_MAX - 1)
+
#endif /* _LINUX_IF_LINK_H */
diff --git a/ip/Makefile b/ip/Makefile
index f10d22f..9dad492 100644
--- a/ip/Makefile
+++ b/ip/Makefile
@@ -5,7 +5,7 @@ IPOBJ=ip.o ipaddress.o ipaddrlabel.o iproute.o iprule.o ipnetns.o \
iplink_vlan.o link_veth.o link_gre.o iplink_can.o \
iplink_macvlan.o iplink_macvtap.o ipl2tp.o link_vti.o \
iplink_vxlan.o tcp_metrics.o iplink_ipoib.o ipnetconf.o link_ip6tnl.o \
- link_iptnl.o link_gre6.o
+ link_iptnl.o link_gre6.o iplink_hsr.o
RTMONOBJ=rtmon.o
diff --git a/ip/iplink_hsr.c b/ip/iplink_hsr.c
new file mode 100644
index 0000000..4af8f78
--- /dev/null
+++ b/ip/iplink_hsr.c
@@ -0,0 +1,127 @@
+/*
+ * iplink_hsr.c HSR 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: Arvid Brodin <arvid.brodin@...n.com>
+ *
+ * Based on iplink_vlan.c by Patrick McHardy <kaber@...sh.net>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h> /* Needed by linux/if.h for some reason */
+#include <linux/if.h>
+#include <linux/if_arp.h>
+#include "rt_names.h"
+#include "utils.h"
+#include "ip_common.h"
+
+static void usage(void)
+{
+ fprintf(stderr,
+"Usage:\tip link add name NAME type hsr slave1 SLAVE1-IF slave2 SLAVE2-IF\n"
+"\t[ supervision ADDR-BYTE ]\n"
+"\n"
+"NAME\n"
+" name of new hsr device (e.g. hsr0)\n"
+"SLAVE1-IF, SLAVE2-IF\n"
+" the two slave devices bound to the HSR device\n"
+"ADDR-BYTE\n"
+" 0-255; the last byte of the multicast address used for HSR supervision\n"
+" frames (default = 0)\n");
+}
+
+static int hsr_parse_opt(struct link_util *lu, int argc, char **argv,
+ struct nlmsghdr *n)
+{
+ int ifindex;
+ unsigned char multicast_spec;
+
+ while (argc > 0) {
+ if (matches(*argv, "supervision") == 0) {
+ NEXT_ARG();
+ if (get_u8(&multicast_spec, *argv, 0))
+ invarg("ADDR-BYTE is invalid", *argv);
+ addattr_l(n, 1024, IFLA_HSR_MULTICAST_SPEC, &multicast_spec, 1);
+ } else if (matches(*argv, "slave1") == 0) {
+ NEXT_ARG();
+ ifindex = ll_name_to_index(*argv);
+ if (ifindex == 0)
+ invarg("No such interface", *argv);
+ addattr_l(n, 1024, IFLA_HSR_SLAVE1, &ifindex, 4);
+ } else if (matches(*argv, "slave2") == 0) {
+ NEXT_ARG();
+ ifindex = ll_name_to_index(*argv);
+ if (ifindex == 0)
+ invarg("No such interface", *argv);
+ addattr_l(n, 1024, IFLA_HSR_SLAVE2, &ifindex, 4);
+ } else if (matches(*argv, "help") == 0) {
+ usage();
+ return -1;
+ } else {
+ fprintf(stderr, "hsr: what is \"%s\"?\n", *argv);
+ usage();
+ return -1;
+ }
+ argc--, argv++;
+ }
+
+ return 0;
+}
+
+static void hsr_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
+{
+ SPRINT_BUF(b1);
+
+ if (!tb)
+ return;
+
+ if (tb[IFLA_HSR_SLAVE1] &&
+ RTA_PAYLOAD(tb[IFLA_HSR_SLAVE1]) < sizeof(__u32))
+ return;
+ if (tb[IFLA_HSR_SLAVE2] &&
+ RTA_PAYLOAD(tb[IFLA_HSR_SLAVE2]) < sizeof(__u32))
+ return;
+ if (tb[IFLA_HSR_SEQ_NR] &&
+ RTA_PAYLOAD(tb[IFLA_HSR_SEQ_NR]) < sizeof(__u16))
+ return;
+ if (tb[IFLA_HSR_SUPERVISION_ADDR] &&
+ RTA_PAYLOAD(tb[IFLA_HSR_SUPERVISION_ADDR]) < ETH_ALEN)
+ return;
+
+ fprintf(f, "slave1 ");
+ if (tb[IFLA_HSR_SLAVE1])
+ fprintf(f, "%s ",
+ ll_index_to_name(rta_getattr_u32(tb[IFLA_HSR_SLAVE1])));
+ else
+ fprintf(f, "<none> ");
+
+ fprintf(f, "slave2 ");
+ if (tb[IFLA_HSR_SLAVE2])
+ fprintf(f, "%s ",
+ ll_index_to_name(rta_getattr_u32(tb[IFLA_HSR_SLAVE2])));
+ else
+ fprintf(f, "<none> ");
+
+ if (tb[IFLA_HSR_SEQ_NR])
+ fprintf(f, "sequence %d ", rta_getattr_u16(tb[IFLA_HSR_SEQ_NR]));
+
+ if (tb[IFLA_HSR_SUPERVISION_ADDR])
+ fprintf(f, "supervision %s ",
+ ll_addr_n2a(RTA_DATA(tb[IFLA_HSR_SUPERVISION_ADDR]),
+ RTA_PAYLOAD(tb[IFLA_HSR_SUPERVISION_ADDR]),
+ ARPHRD_VOID,
+ b1, sizeof(b1)));
+}
+
+struct link_util hsr_link_util = {
+ .id = "hsr",
+ .maxattr = IFLA_VLAN_MAX,
+ .parse_opt = hsr_parse_opt,
+ .print_opt = hsr_print_opt,
+};
diff --git a/man/man8/ip-link.8.in b/man/man8/ip-link.8.in
index 8b68c78..7f7f882 100644
--- a/man/man8/ip-link.8.in
+++ b/man/man8/ip-link.8.in
@@ -53,6 +53,7 @@ ip-link \- network device configuration
.BR bridge " | "
.BR can " | "
.BR dummy " | "
+.BR hsr " | "
.BR ifb " | "
.BR ipoib " |"
.BR macvlan " | "
--
1.8.1.5
--
Arvid Brodin | Consultant (Linux)
XDIN AB | Knarrarnäsgatan 7 | SE-164 40 Kista | Sweden | xdin.com
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