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https://git.proxmox.com/git/mirror_iproute2
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ip: add support of 'ip link type ip6tnl'
This patch allows to manage ip6 tunnels via the interface ip link. The syntax for parameters is the same that 'ip -6 tunnel'. It also allows to display tunnels parameters with 'ip -details link' or 'ip -details monitor link'. Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
This commit is contained in:
Nicolas Dichtel
Stephen Hemminger
parent
4852ba750a
commit
9d0efc1048
@ -8,6 +8,7 @@
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#include <linux/if_link.h>
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#include <linux/if_addr.h>
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#include <linux/neighbour.h>
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#include <linux/netconf.h>
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struct rtnl_handle
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{
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@ -4,7 +4,7 @@ IPOBJ=ip.o ipaddress.o ipaddrlabel.o iproute.o iprule.o ipnetns.o \
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ipxfrm.o xfrm_state.o xfrm_policy.o xfrm_monitor.o \
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iplink_vlan.o link_veth.o link_gre.o iplink_can.o \
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iplink_macvlan.o iplink_macvtap.o ipl2tp.o link_vti.o \
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iplink_vxlan.o tcp_metrics.o iplink_ipoib.o
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iplink_vxlan.o tcp_metrics.o iplink_ipoib.o ipnetconf.o link_ip6tnl.o
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RTMONOBJ=rtmon.o
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1
ip/ip.c
1
ip/ip.c
@ -85,6 +85,7 @@ static const struct cmd {
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{ "mroute", do_multiroute },
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{ "mrule", do_multirule },
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{ "netns", do_netns },
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{ "netconf", do_ipnetconf },
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{ "help", do_help },
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{ 0 }
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};
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@ -25,6 +25,8 @@ extern int print_prefix(const struct sockaddr_nl *who,
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struct nlmsghdr *n, void *arg);
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extern int print_rule(const struct sockaddr_nl *who,
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struct nlmsghdr *n, void *arg);
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extern int print_netconf(const struct sockaddr_nl *who,
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struct nlmsghdr *n, void *arg);
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extern int do_ipaddr(int argc, char **argv);
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extern int do_ipaddrlabel(int argc, char **argv);
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extern int do_iproute(int argc, char **argv);
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@ -43,6 +45,7 @@ extern int do_netns(int argc, char **argv);
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extern int do_xfrm(int argc, char **argv);
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extern int do_ipl2tp(int argc, char **argv);
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extern int do_tcp_metrics(int argc, char **argv);
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extern int do_ipnetconf(int argc, char **argv);
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static inline int rtm_get_table(struct rtmsg *r, struct rtattr **tb)
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{
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@ -83,7 +83,8 @@ void iplink_usage(void)
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if (iplink_have_newlink()) {
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fprintf(stderr, "\n");
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fprintf(stderr, "TYPE := { vlan | veth | vcan | dummy | ifb | macvlan | can | bridge | ipoib }\n");
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fprintf(stderr, "TYPE := { vlan | veth | vcan | dummy | ifb | macvlan | can |\n");
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fprintf(stderr, " bridge | ipoib | ip6tnl }\n");
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}
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exit(-1);
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}
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@ -85,6 +85,12 @@ int accept_msg(const struct sockaddr_nl *who,
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print_rule(who, n, arg);
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return 0;
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}
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if (n->nlmsg_type == RTM_NEWNETCONF) {
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if (prefix_banner)
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fprintf(fp, "[NETCONF]");
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print_netconf(who, n, arg);
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return 0;
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}
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if (n->nlmsg_type == 15) {
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char *tstr;
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time_t secs = ((__u32*)NLMSG_DATA(n))[0];
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@ -118,6 +124,7 @@ int do_ipmonitor(int argc, char **argv)
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int lroute=0;
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int lprefix=0;
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int lneigh=0;
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int lnetconf=0;
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rtnl_close(&rth);
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ipaddr_reset_filter(1);
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@ -143,6 +150,9 @@ int do_ipmonitor(int argc, char **argv)
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} else if (matches(*argv, "neigh") == 0) {
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lneigh = 1;
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groups = 0;
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} else if (matches(*argv, "netconf") == 0) {
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lnetconf = 1;
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groups = 0;
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} else if (strcmp(*argv, "all") == 0) {
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groups = ~RTMGRP_TC;
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prefix_banner=1;
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@ -176,6 +186,12 @@ int do_ipmonitor(int argc, char **argv)
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if (lneigh) {
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groups |= nl_mgrp(RTNLGRP_NEIGH);
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}
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if (lnetconf) {
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if (!preferred_family || preferred_family == AF_INET)
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groups |= nl_mgrp(RTNLGRP_IPV4_NETCONF);
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if (!preferred_family || preferred_family == AF_INET6)
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groups |= nl_mgrp(RTNLGRP_IPV6_NETCONF);
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}
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if (file) {
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FILE *fp;
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fp = fopen(file, "r");
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344
ip/link_ip6tnl.c
Normal file
344
ip/link_ip6tnl.c
Normal file
@ -0,0 +1,344 @@
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/*
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* link_ip6tnl.c ip6tnl driver module
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Nicolas Dichtel <nicolas.dichtel@6wind.com>
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*
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*/
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#include <string.h>
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#include <net/if.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <linux/ip.h>
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#include <linux/if_tunnel.h>
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#include <linux/ip6_tunnel.h>
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#include "rt_names.h"
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#include "utils.h"
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#include "ip_common.h"
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#include "tunnel.h"
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#define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
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#define IP6_FLOWINFO_FLOWLABEL htonl(0x000FFFFF)
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#define DEFAULT_TNL_HOP_LIMIT (64)
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static void usage(void) __attribute__((noreturn));
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static void usage(void)
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{
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fprintf(stderr, "Usage: ip link { add | set | change | replace | del } NAME\n");
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fprintf(stderr, " type ip6tnl [ remote ADDR ] [ local ADDR ]\n");
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fprintf(stderr, " [ dev PHYS_DEV ] [ encaplimit ELIM ]\n");
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fprintf(stderr ," [ hoplimit HLIM ] [ tclass TCLASS ] [ flowlabel FLOWLABEL ]\n");
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fprintf(stderr, " [ dscp inherit ] [ fwmark inherit ]\n");
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fprintf(stderr, "\n");
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fprintf(stderr, "Where: NAME := STRING\n");
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fprintf(stderr, " ADDR := IPV6_ADDRESS\n");
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fprintf(stderr, " ELIM := { none | 0..255 }(default=%d)\n",
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IPV6_DEFAULT_TNL_ENCAP_LIMIT);
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fprintf(stderr, " HLIM := 0..255 (default=%d)\n",
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DEFAULT_TNL_HOP_LIMIT);
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fprintf(stderr, " TCLASS := { 0x0..0xff | inherit }\n");
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fprintf(stderr, " FLOWLABEL := { 0x0..0xfffff | inherit }\n");
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exit(-1);
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}
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static int ip6tunnel_parse_opt(struct link_util *lu, int argc, char **argv,
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struct nlmsghdr *n)
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{
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struct {
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struct nlmsghdr n;
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struct ifinfomsg i;
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char buf[2048];
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} req;
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struct ifinfomsg *ifi = (struct ifinfomsg *)(n + 1);
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struct rtattr *tb[IFLA_MAX + 1];
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struct rtattr *linkinfo[IFLA_INFO_MAX+1];
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struct rtattr *iptuninfo[IFLA_IPTUN_MAX + 1];
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int len;
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struct in6_addr laddr;
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struct in6_addr raddr;
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__u8 hop_limit = DEFAULT_TNL_HOP_LIMIT;
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__u8 encap_limit = IPV6_DEFAULT_TNL_ENCAP_LIMIT;
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__u32 flowinfo = 0;
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__u32 flags = 0;
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__u32 link = 0;
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__u8 proto = 0;
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memset(&laddr, 0, sizeof(laddr));
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memset(&raddr, 0, sizeof(raddr));
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if (!(n->nlmsg_flags & NLM_F_CREATE)) {
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memset(&req, 0, sizeof(req));
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req.n.nlmsg_len = NLMSG_LENGTH(sizeof(*ifi));
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req.n.nlmsg_flags = NLM_F_REQUEST;
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req.n.nlmsg_type = RTM_GETLINK;
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req.i.ifi_family = preferred_family;
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req.i.ifi_index = ifi->ifi_index;
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if (rtnl_talk(&rth, &req.n, 0, 0, &req.n) < 0) {
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get_failed:
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fprintf(stderr,
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"Failed to get existing tunnel info.\n");
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return -1;
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}
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len = req.n.nlmsg_len;
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len -= NLMSG_LENGTH(sizeof(*ifi));
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if (len < 0)
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goto get_failed;
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parse_rtattr(tb, IFLA_MAX, IFLA_RTA(&req.i), len);
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if (!tb[IFLA_LINKINFO])
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goto get_failed;
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parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb[IFLA_LINKINFO]);
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if (!linkinfo[IFLA_INFO_DATA])
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goto get_failed;
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parse_rtattr_nested(iptuninfo, IFLA_IPTUN_MAX,
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linkinfo[IFLA_INFO_DATA]);
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if (iptuninfo[IFLA_IPTUN_LOCAL])
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memcpy(&laddr, RTA_DATA(iptuninfo[IFLA_IPTUN_LOCAL]),
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sizeof(laddr));
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if (iptuninfo[IFLA_IPTUN_REMOTE])
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memcpy(&raddr, RTA_DATA(iptuninfo[IFLA_IPTUN_REMOTE]),
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sizeof(raddr));
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if (iptuninfo[IFLA_IPTUN_TTL])
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hop_limit = rta_getattr_u8(iptuninfo[IFLA_IPTUN_TTL]);
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if (iptuninfo[IFLA_IPTUN_ENCAP_LIMIT])
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encap_limit = rta_getattr_u8(iptuninfo[IFLA_IPTUN_ENCAP_LIMIT]);
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if (iptuninfo[IFLA_IPTUN_FLOWINFO])
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flowinfo = rta_getattr_u32(iptuninfo[IFLA_IPTUN_FLOWINFO]);
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if (iptuninfo[IFLA_IPTUN_FLAGS])
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flags = rta_getattr_u32(iptuninfo[IFLA_IPTUN_FLAGS]);
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if (iptuninfo[IFLA_IPTUN_LINK])
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link = rta_getattr_u32(iptuninfo[IFLA_IPTUN_LINK]);
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if (iptuninfo[IFLA_IPTUN_PROTO])
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proto = rta_getattr_u8(iptuninfo[IFLA_IPTUN_PROTO]);
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}
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while (argc > 0) {
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if (matches(*argv, "mode") == 0) {
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NEXT_ARG();
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if (strcmp(*argv, "ipv6/ipv6") == 0 ||
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strcmp(*argv, "ip6ip6") == 0)
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proto = IPPROTO_IPV6;
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else if (strcmp(*argv, "ip/ipv6") == 0 ||
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strcmp(*argv, "ipv4/ipv6") == 0 ||
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strcmp(*argv, "ipip6") == 0 ||
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strcmp(*argv, "ip4ip6") == 0)
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proto = IPPROTO_IPIP;
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else if (strcmp(*argv, "any/ipv6") == 0 ||
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strcmp(*argv, "any") == 0)
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proto = 0;
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else
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invarg("Cannot guess tunnel mode.", *argv);
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} else if (strcmp(*argv, "remote") == 0) {
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inet_prefix addr;
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NEXT_ARG();
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get_prefix(&addr, *argv, preferred_family);
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if (addr.family == AF_UNSPEC)
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invarg("\"remote\" address family is AF_UNSPEC", *argv);
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memcpy(&raddr, addr.data, addr.bytelen);
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} else if (strcmp(*argv, "local") == 0) {
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inet_prefix addr;
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NEXT_ARG();
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get_prefix(&addr, *argv, preferred_family);
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if (addr.family == AF_UNSPEC)
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invarg("\"local\" address family is AF_UNSPEC", *argv);
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memcpy(&laddr, addr.data, addr.bytelen);
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} else if (matches(*argv, "dev") == 0) {
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NEXT_ARG();
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link = if_nametoindex(*argv);
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if (link == 0)
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invarg("\"dev\" is invalid", *argv);
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} else if (strcmp(*argv, "hoplimit") == 0 ||
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strcmp(*argv, "ttl") == 0 ||
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strcmp(*argv, "hlim") == 0) {
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__u8 uval;
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NEXT_ARG();
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if (get_u8(&uval, *argv, 0))
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invarg("invalid HLIM", *argv);
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hop_limit = uval;
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} else if (matches(*argv, "encaplimit") == 0) {
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NEXT_ARG();
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if (strcmp(*argv, "none") == 0) {
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flags |= IP6_TNL_F_IGN_ENCAP_LIMIT;
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} else {
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__u8 uval;
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if (get_u8(&uval, *argv, 0) < -1)
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invarg("invalid ELIM", *argv);
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encap_limit = uval;
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flags &= ~IP6_TNL_F_IGN_ENCAP_LIMIT;
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}
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} else if (strcmp(*argv, "tclass") == 0 ||
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strcmp(*argv, "tc") == 0 ||
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strcmp(*argv, "tos") == 0 ||
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matches(*argv, "dsfield") == 0) {
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__u8 uval;
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NEXT_ARG();
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flowinfo &= ~IP6_FLOWINFO_TCLASS;
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if (strcmp(*argv, "inherit") == 0)
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flags |= IP6_TNL_F_USE_ORIG_TCLASS;
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else {
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if (get_u8(&uval, *argv, 16))
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invarg("invalid TClass", *argv);
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flowinfo |= htonl((__u32)uval << 20) & IP6_FLOWINFO_TCLASS;
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flags &= ~IP6_TNL_F_USE_ORIG_TCLASS;
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}
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} else if (strcmp(*argv, "flowlabel") == 0 ||
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strcmp(*argv, "fl") == 0) {
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__u32 uval;
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NEXT_ARG();
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flowinfo &= ~IP6_FLOWINFO_FLOWLABEL;
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if (strcmp(*argv, "inherit") == 0)
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flags |= IP6_TNL_F_USE_ORIG_FLOWLABEL;
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else {
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if (get_u32(&uval, *argv, 16))
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invarg("invalid Flowlabel", *argv);
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if (uval > 0xFFFFF)
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invarg("invalid Flowlabel", *argv);
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flowinfo |= htonl(uval) & IP6_FLOWINFO_FLOWLABEL;
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flags &= ~IP6_TNL_F_USE_ORIG_FLOWLABEL;
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}
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} else if (strcmp(*argv, "dscp") == 0) {
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NEXT_ARG();
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if (strcmp(*argv, "inherit") != 0)
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invarg("not inherit", *argv);
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flags |= IP6_TNL_F_RCV_DSCP_COPY;
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} else if (strcmp(*argv, "fwmark") == 0) {
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NEXT_ARG();
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if (strcmp(*argv, "inherit") != 0)
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invarg("not inherit", *argv);
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flags |= IP6_TNL_F_USE_ORIG_FWMARK;
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} else
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usage();
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argc--, argv++;
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}
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addattr8(n, 1024, IFLA_IPTUN_PROTO, proto);
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addattr_l(n, 1024, IFLA_IPTUN_LOCAL, &laddr, sizeof(laddr));
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addattr_l(n, 1024, IFLA_IPTUN_REMOTE, &raddr, sizeof(raddr));
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addattr8(n, 1024, IFLA_IPTUN_TTL, hop_limit);
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addattr8(n, 1024, IFLA_IPTUN_ENCAP_LIMIT, encap_limit);
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addattr32(n, 1024, IFLA_IPTUN_FLOWINFO, flowinfo);
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addattr32(n, 1024, IFLA_IPTUN_FLAGS, flags);
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addattr32(n, 1024, IFLA_IPTUN_LINK, link);
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return 0;
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}
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static void ip6tunnel_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
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{
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char s1[256];
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char s2[64];
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int flags = 0;
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__u32 flowinfo = 0;
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if (!tb)
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return;
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if (tb[IFLA_IPTUN_FLAGS])
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flags = rta_getattr_u32(tb[IFLA_IPTUN_FLAGS]);
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if (tb[IFLA_IPTUN_FLOWINFO])
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flowinfo = rta_getattr_u32(tb[IFLA_IPTUN_FLOWINFO]);
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if (tb[IFLA_IPTUN_PROTO]) {
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switch (rta_getattr_u8(tb[IFLA_IPTUN_PROTO])) {
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case IPPROTO_IPIP:
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fprintf(f, "ipip6 ");
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break;
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case IPPROTO_IPV6:
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fprintf(f, "ip6ip6 ");
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break;
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case 0:
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fprintf(f, "any ");
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break;
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}
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}
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if (tb[IFLA_IPTUN_REMOTE]) {
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fprintf(f, "remote %s ",
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rt_addr_n2a(AF_INET6,
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RTA_PAYLOAD(tb[IFLA_IPTUN_REMOTE]),
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RTA_DATA(tb[IFLA_IPTUN_REMOTE]),
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s1, sizeof(s1)));
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}
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if (tb[IFLA_IPTUN_LOCAL]) {
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fprintf(f, "local %s ",
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rt_addr_n2a(AF_INET6,
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RTA_PAYLOAD(tb[IFLA_IPTUN_LOCAL]),
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RTA_DATA(tb[IFLA_IPTUN_LOCAL]),
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s1, sizeof(s1)));
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}
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if (tb[IFLA_IPTUN_LINK] && rta_getattr_u32(tb[IFLA_IPTUN_LINK])) {
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unsigned link = rta_getattr_u32(tb[IFLA_IPTUN_LINK]);
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const char *n = if_indextoname(link, s2);
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if (n)
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fprintf(f, "dev %s ", n);
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else
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fprintf(f, "dev %u ", link);
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}
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if (flags & IP6_TNL_F_IGN_ENCAP_LIMIT)
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printf("encaplimit none ");
|
||||
else if (tb[IFLA_IPTUN_ENCAP_LIMIT])
|
||||
fprintf(f, "encaplimit %u ",
|
||||
rta_getattr_u8(tb[IFLA_IPTUN_ENCAP_LIMIT]));
|
||||
|
||||
if (tb[IFLA_IPTUN_TTL])
|
||||
fprintf(f, "hoplimit %u ", rta_getattr_u8(tb[IFLA_IPTUN_TTL]));
|
||||
|
||||
if (flags & IP6_TNL_F_USE_ORIG_TCLASS)
|
||||
printf("tclass inherit ");
|
||||
else if (tb[IFLA_IPTUN_FLOWINFO]) {
|
||||
__u32 val = ntohl(flowinfo & IP6_FLOWINFO_TCLASS);
|
||||
|
||||
printf("tclass 0x%02x ", (__u8)(val >> 20));
|
||||
}
|
||||
|
||||
if (flags & IP6_TNL_F_USE_ORIG_FLOWLABEL)
|
||||
printf("flowlabel inherit ");
|
||||
else
|
||||
printf("flowlabel 0x%05x ", ntohl(flowinfo & IP6_FLOWINFO_FLOWLABEL));
|
||||
|
||||
printf("(flowinfo 0x%08x) ", ntohl(flowinfo));
|
||||
|
||||
if (flags & IP6_TNL_F_RCV_DSCP_COPY)
|
||||
printf("dscp inherit ");
|
||||
|
||||
if (flags & IP6_TNL_F_MIP6_DEV)
|
||||
fprintf(f, "mip6 ");
|
||||
|
||||
if (flags & IP6_TNL_F_USE_ORIG_FWMARK)
|
||||
fprintf(f, "fwmark inherit ");
|
||||
}
|
||||
|
||||
struct link_util ip6tnl_link_util = {
|
||||
.id = "ip6tnl",
|
||||
.maxattr = IFLA_IPTUN_MAX,
|
||||
.parse_opt = ip6tunnel_parse_opt,
|
||||
.print_opt = ip6tunnel_print_opt,
|
||||
};
|
||||
Loading…
Reference in New Issue
Block a user