From patchwork Tue Oct 26 22:19:48 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sridhar Samudrala X-Patchwork-Id: 284232 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id o9QMKKGx014873 for ; Tue, 26 Oct 2010 22:20:20 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932167Ab0JZWTy (ORCPT ); Tue, 26 Oct 2010 18:19:54 -0400 Received: from e35.co.us.ibm.com ([32.97.110.153]:48348 "EHLO e35.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760545Ab0JZWTw (ORCPT ); Tue, 26 Oct 2010 18:19:52 -0400 Received: from d03relay03.boulder.ibm.com (d03relay03.boulder.ibm.com [9.17.195.228]) by e35.co.us.ibm.com (8.14.4/8.13.1) with ESMTP id o9QM8mtQ002041; Tue, 26 Oct 2010 16:08:48 -0600 Received: from d03av02.boulder.ibm.com (d03av02.boulder.ibm.com [9.17.195.168]) by d03relay03.boulder.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id o9QMJpx5188070; Tue, 26 Oct 2010 16:19:51 -0600 Received: from d03av02.boulder.ibm.com (loopback [127.0.0.1]) by d03av02.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id o9QMJnZC027951; Tue, 26 Oct 2010 16:19:50 -0600 Received: from [9.47.24.19] (sridhar.beaverton.ibm.com [9.47.24.19]) by d03av02.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id o9QMJmq4027875; Tue, 26 Oct 2010 16:19:49 -0600 Subject: [PATCH iproute2] Add passthru mode and support 'mode' parameter with macvtap devices From: Sridhar Samudrala To: kaber@trash.net, Arnd Bergmann Cc: netdev , "kvm@vger.kernel.org" Date: Tue, 26 Oct 2010 15:19:48 -0700 Message-Id: <1288131588.7582.50.camel@sridhar.beaverton.ibm.com> Mime-Version: 1.0 X-Mailer: Evolution 2.26.3 (2.26.3-1.fc11) Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Tue, 26 Oct 2010 22:20:20 +0000 (UTC) diff --git a/include/linux/if_link.h b/include/linux/if_link.h index f5bb2dc..23de79e 100644 --- a/include/linux/if_link.h +++ b/include/linux/if_link.h @@ -230,6 +230,7 @@ enum macvlan_mode { MACVLAN_MODE_PRIVATE = 1, /* don't talk to other macvlans */ MACVLAN_MODE_VEPA = 2, /* talk to other ports through ext bridge */ MACVLAN_MODE_BRIDGE = 4, /* talk to bridge ports directly */ + MACVLAN_MODE_PASSTHRU = 8, /* take over the underlying device */ }; /* SR-IOV virtual function management section */ diff --git a/ip/Makefile b/ip/Makefile index 2f223ca..6054e8a 100644 --- a/ip/Makefile +++ b/ip/Makefile @@ -3,7 +3,7 @@ IPOBJ=ip.o ipaddress.o ipaddrlabel.o iproute.o iprule.o \ ipmaddr.o ipmonitor.o ipmroute.o ipprefix.o iptuntap.o \ ipxfrm.o xfrm_state.o xfrm_policy.o xfrm_monitor.o \ iplink_vlan.o link_veth.o link_gre.o iplink_can.o \ - iplink_macvlan.o + iplink_macvlan.o iplink_macvtap.o RTMONOBJ=rtmon.o diff --git a/ip/iplink_macvlan.c b/ip/iplink_macvlan.c index a3c78bd..97787f9 100644 --- a/ip/iplink_macvlan.c +++ b/ip/iplink_macvlan.c @@ -48,6 +48,8 @@ static int macvlan_parse_opt(struct link_util *lu, int argc, char **argv, mode = MACVLAN_MODE_VEPA; else if (strcmp(*argv, "bridge") == 0) mode = MACVLAN_MODE_BRIDGE; + else if (strcmp(*argv, "passthru") == 0) + mode = MACVLAN_MODE_PASSTHRU; else return mode_arg(); @@ -82,6 +84,7 @@ static void macvlan_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[] mode == MACVLAN_MODE_PRIVATE ? "private" : mode == MACVLAN_MODE_VEPA ? "vepa" : mode == MACVLAN_MODE_BRIDGE ? "bridge" + : mode == MACVLAN_MODE_PASSTHRU ? "passthru" : "unknown"); } diff --git a/ip/iplink_macvtap.c b/ip/iplink_macvtap.c new file mode 100644 index 0000000..040cc68 --- /dev/null +++ b/ip/iplink_macvtap.c @@ -0,0 +1,93 @@ +/* + * iplink_macvtap.c macvtap 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. + */ + +#include +#include +#include +#include +#include + +#include "rt_names.h" +#include "utils.h" +#include "ip_common.h" + +static void explain(void) +{ + fprintf(stderr, + "Usage: ... macvtap mode { private | vepa | bridge | passthru }\n" + ); +} + +static int mode_arg(void) +{ + fprintf(stderr, "Error: argument of \"mode\" must be \"private\", " + "\"vepa\" or \"bridge\" \"passthru\"\n"); + return -1; +} + +static int macvtap_parse_opt(struct link_util *lu, int argc, char **argv, + struct nlmsghdr *n) +{ + while (argc > 0) { + if (matches(*argv, "mode") == 0) { + __u32 mode = 0; + NEXT_ARG(); + + if (strcmp(*argv, "private") == 0) + mode = MACVLAN_MODE_PRIVATE; + else if (strcmp(*argv, "vepa") == 0) + mode = MACVLAN_MODE_VEPA; + else if (strcmp(*argv, "bridge") == 0) + mode = MACVLAN_MODE_BRIDGE; + else if (strcmp(*argv, "passthru") == 0) + mode = MACVLAN_MODE_PASSTHRU; + else + return mode_arg(); + + addattr32(n, 1024, IFLA_MACVLAN_MODE, mode); + } else if (matches(*argv, "help") == 0) { + explain(); + return -1; + } else { + fprintf(stderr, "macvtap: what is \"%s\"?\n", *argv); + explain(); + return -1; + } + argc--, argv++; + } + + return 0; +} + +static void macvtap_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[]) +{ + __u32 mode; + + if (!tb) + return; + + if (!tb[IFLA_MACVLAN_MODE] || + RTA_PAYLOAD(tb[IFLA_MACVLAN_MODE]) < sizeof(__u32)) + return; + + mode = *(__u32 *)RTA_DATA(tb[IFLA_VLAN_ID]); + fprintf(f, " mode %s ", + mode == MACVLAN_MODE_PRIVATE ? "private" + : mode == MACVLAN_MODE_VEPA ? "vepa" + : mode == MACVLAN_MODE_BRIDGE ? "bridge" + : mode == MACVLAN_MODE_PASSTHRU ? "passthru" + : "unknown"); +} + +struct link_util macvtap_link_util = { + .id = "macvtap", + .maxattr = IFLA_MACVLAN_MAX, + .parse_opt = macvtap_parse_opt, + .print_opt = macvtap_print_opt, +};