From mboxrd@z Thu Jan 1 00:00:00 1970 From: "John W. Linville" Subject: [PATCH] iproute2: GENEVE support Date: Fri, 8 May 2015 13:27:08 -0400 Message-ID: <1431106028-5643-1-git-send-email-linville@tuxdriver.com> References: <1431105657-25492-1-git-send-email-linville@tuxdriver.com> Cc: "David S. Miller" , Jesse Gross , Andy Zhou , Stephen Hemminger , Alexander Duyck , "John W. Linville" To: netdev@vger.kernel.org Return-path: Received: from charlotte.tuxdriver.com ([70.61.120.58]:49370 "EHLO smtp.tuxdriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932299AbbEHR1f (ORCPT ); Fri, 8 May 2015 13:27:35 -0400 In-Reply-To: <1431105657-25492-1-git-send-email-linville@tuxdriver.com> Sender: netdev-owner@vger.kernel.org List-ID: Signed-off-by: John W. Linville --- This includes the include/linux/if_link.h bits, that will need to be dropped after iproute2 does the 4.1 update for that file... include/linux/if_link.h | 9 ++++ ip/Makefile | 3 +- ip/iplink.c | 2 +- ip/iplink_geneve.c | 122 ++++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 134 insertions(+), 2 deletions(-) create mode 100644 ip/iplink_geneve.c diff --git a/include/linux/if_link.h b/include/linux/if_link.h index 3d0d61317733..86058638c4d9 100644 --- a/include/linux/if_link.h +++ b/include/linux/if_link.h @@ -388,6 +388,15 @@ struct ifla_vxlan_port_range { __be16 high; }; +/* GENEVE section */ +enum { + IFLA_GENEVE_UNSPEC, + IFLA_GENEVE_ID, + IFLA_GENEVE_REMOTE, + __IFLA_GENEVE_MAX +}; +#define IFLA_GENEVE_MAX (__IFLA_GENEVE_MAX - 1) + /* Bonding section */ enum { diff --git a/ip/Makefile b/ip/Makefile index 2c742f305fef..77653ecc5785 100644 --- a/ip/Makefile +++ b/ip/Makefile @@ -6,7 +6,8 @@ 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_geneve.o RTMONOBJ=rtmon.o diff --git a/ip/iplink.c b/ip/iplink.c index bb437b96239a..39c76e778020 100644 --- a/ip/iplink.c +++ b/ip/iplink.c @@ -93,7 +93,7 @@ void iplink_usage(void) fprintf(stderr, "TYPE := { vlan | veth | vcan | dummy | ifb | macvlan | macvtap |\n"); fprintf(stderr, " bridge | bond | ipoib | ip6tnl | ipip | sit | vxlan |\n"); fprintf(stderr, " gre | gretap | ip6gre | ip6gretap | vti | nlmon |\n"); - fprintf(stderr, " bond_slave | ipvlan }\n"); + fprintf(stderr, " bond_slave | ipvlan | geneve }\n"); } exit(-1); } diff --git a/ip/iplink_geneve.c b/ip/iplink_geneve.c new file mode 100644 index 000000000000..74703e1ee156 --- /dev/null +++ b/ip/iplink_geneve.c @@ -0,0 +1,122 @@ +/* + * iplink_geneve.c GENEVE 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: John W. Linville + */ + +#include + +#include "utils.h" +#include "ip_common.h" + +static void print_explain(FILE *f) +{ + fprintf(f, "Usage: ... geneve id VNI remote ADDR\n"); + fprintf(f, "\n"); + fprintf(f, "Where: VNI := 0-16777215\n"); + fprintf(f, " ADDR := IP_ADDRESS\n"); +} + +static void explain(void) +{ + print_explain(stderr); +} + +static int geneve_parse_opt(struct link_util *lu, int argc, char **argv, + struct nlmsghdr *n) +{ + __u32 vni = 0; + int vni_set = 0; + __u32 daddr = 0; + struct in6_addr daddr6 = IN6ADDR_ANY_INIT; + + + while (argc > 0) { + if (!matches(*argv, "id") || + !matches(*argv, "vni")) { + NEXT_ARG(); + if (get_u32(&vni, *argv, 0) || + vni >= 1u << 24) + invarg("invalid id", *argv); + vni_set = 1; + } else if (!matches(*argv, "remote")) { + NEXT_ARG(); + if (!inet_get_addr(*argv, &daddr, &daddr6)) { + fprintf(stderr, "Invalid address \"%s\"\n", *argv); + return -1; + } + if (IN_MULTICAST(ntohl(daddr))) + invarg("invalid remote address", *argv); + } else if (matches(*argv, "help") == 0) { + explain(); + return -1; + } else { + fprintf(stderr, "geneve: unknown command \"%s\"?\n", *argv); + explain(); + return -1; + } + argc--, argv++; + } + + if (!vni_set) { + fprintf(stderr, "geneve: missing virtual network identifier\n"); + return -1; + } + + if (!daddr) { + fprintf(stderr, "geneve: remove link partner not specified\n"); + return -1; + } + if (memcmp(&daddr6, &in6addr_any, sizeof(daddr6)) != 0) { + fprintf(stderr, "geneve: remove link over IPv6 not supported\n"); + return -1; + } + + addattr32(n, 1024, IFLA_GENEVE_ID, vni); + if (daddr) + addattr_l(n, 1024, IFLA_GENEVE_REMOTE, &daddr, 4); + + return 0; +} + +static void geneve_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[]) +{ + __u32 vni; + char s1[1024]; + + if (!tb) + return; + + if (!tb[IFLA_GENEVE_ID] || + RTA_PAYLOAD(tb[IFLA_GENEVE_ID]) < sizeof(__u32)) + return; + + vni = rta_getattr_u32(tb[IFLA_GENEVE_ID]); + fprintf(f, "id %u ", vni); + + if (tb[IFLA_GENEVE_REMOTE]) { + __be32 addr = rta_getattr_u32(tb[IFLA_GENEVE_REMOTE]); + if (addr) + fprintf(f, "remote %s ", + format_host(AF_INET, 4, &addr, s1, sizeof(s1))); + } +} + +static void geneve_print_help(struct link_util *lu, int argc, char **argv, + FILE *f) +{ + print_explain(f); +} + +struct link_util geneve_link_util = { + .id = "geneve", + .maxattr = IFLA_GENEVE_MAX, + .parse_opt = geneve_parse_opt, + .print_opt = geneve_print_opt, + .print_help = geneve_print_help, +}; -- 2.1.0