From mboxrd@z Thu Jan 1 00:00:00 1970 From: ebiederm@xmission.com (Eric W. Biederman) Subject: [PATCH 3/4] [IPROUTE2] Module for ip utility to support veth device Date: Wed, 12 Sep 2007 06:59:52 -0600 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: , Pavel Emelyanov , Patrick McHardy To: Stephen Hemminger Return-path: Received: from ebiederm.dsl.xmission.com ([166.70.28.69]:48566 "EHLO ebiederm.dsl.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933410AbXILNAV (ORCPT ); Wed, 12 Sep 2007 09:00:21 -0400 In-Reply-To: (Eric W. Biederman's message of "Wed, 12 Sep 2007 06:58:57 -0600") Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Pavel Emelyanov Date: Thu, 19 Jul 2007 13:33:56 +0400 The link_veth.so itself. Signed-off-by: Pavel Emelyanov Acked-by: Patrick McHardy --- ip/Makefile | 6 ++++- ip/link_veth.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ip/veth.h | 12 ++++++++++ 3 files changed, 80 insertions(+), 1 deletions(-) create mode 100644 ip/link_veth.c create mode 100644 ip/veth.h diff --git a/ip/Makefile b/ip/Makefile index 9a5bfe3..b46bce3 100644 --- a/ip/Makefile +++ b/ip/Makefile @@ -8,8 +8,9 @@ RTMONOBJ=rtmon.o ALLOBJ=$(IPOBJ) $(RTMONOBJ) SCRIPTS=ifcfg rtpr routel routef TARGETS=ip rtmon +LIBS=link_veth.so -all: $(TARGETS) $(SCRIPTS) +all: $(TARGETS) $(SCRIPTS) $(LIBS) ip: $(IPOBJ) $(LIBNETLINK) $(LIBUTIL) @@ -24,3 +25,6 @@ clean: LDLIBS += -ldl LDFLAGS += -Wl,-export-dynamic + +%.so: %.c + $(CC) $(CFLAGS) -shared $< -o $@ diff --git a/ip/link_veth.c b/ip/link_veth.c new file mode 100644 index 0000000..ded2cdd --- /dev/null +++ b/ip/link_veth.c @@ -0,0 +1,63 @@ +/* + * link_veth.c veth driver module + * + * 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: Pavel Emelianov + * + */ + +#include + +#include "utils.h" +#include "ip_common.h" +#include "veth.h" + +#define IFNAMSIZ 16 + +static void usage(void) +{ + printf("Usage: ip link add ... type veth " + "[peer ] [mac ] [peer_mac ]\n"); +} + +static int veth_parse_opt(struct link_util *lu, int argc, char **argv, + struct nlmsghdr *hdr) +{ + char *name, *type, *link, *dev; + int err, len; + struct rtattr * data; + + if (strcmp(argv[0], "peer") != 0) { + usage(); + return -1; + } + + data = NLMSG_TAIL(hdr); + addattr_l(hdr, 1024, VETH_INFO_PEER, NULL, 0); + + hdr->nlmsg_len += sizeof(struct ifinfomsg); + + err = iplink_parse(argc - 1, argv + 1, (struct iplink_req *)hdr, + &name, &type, &link, &dev); + if (err < 0) + return err; + + if (name) { + len = strlen(name) + 1; + if (len > IFNAMSIZ) + invarg("\"name\" too long\n", *argv); + addattr_l(hdr, 1024, IFLA_IFNAME, name, len); + } + + data->rta_len = (void *)NLMSG_TAIL(hdr) - (void *)data; + return argc - 1 - err; +} + +struct link_util veth_link_util = { + .id = "veth", + .parse_opt = veth_parse_opt, +}; diff --git a/ip/veth.h b/ip/veth.h new file mode 100644 index 0000000..aa2e6f9 --- /dev/null +++ b/ip/veth.h @@ -0,0 +1,12 @@ +#ifndef __NET_VETH_H__ +#define __NET_VETH_H__ + +enum { + VETH_INFO_UNSPEC, + VETH_INFO_PEER, + + __VETH_INFO_MAX +#define VETH_INFO_MAX (__VETH_INFO_MAX - 1) +}; + +#endif -- 1.5.3.rc6.17.g1911