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Date: Thu, 07 Jun 2007 15:16:34 +0400 From: Pavel Emelianov <xemul@...nvz.org> To: Linux Netdev List <netdev@...r.kernel.org> CC: David Miller <davem@...emloft.net>, "Eric W. Biederman" <ebiederm@...ssion.com>, Patrick McHardy <kaber@...sh.net>, Daniel Lezcano <dlezcano@...ibm.com>, Stephen Hemminger <shemminger@...ux-foundation.org>, Kirill Korotaev <dev@...nvz.org>, Linux Containers <containers@...ts.osdl.org> Subject: [PATCH] Module for ip utility to support veth device (v.2) The usage is # ip link add [name] type veth [peer <name>] [mac <mac>] [peer_mac <mac>] This version doesn't include the fix for ip/iplink.c as Patrick said that he had included it into his patches already. Signed-off-by: Pavel Emelianov <xemul@...nvz.org> --- 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..f2e4079 --- /dev/null +++ b/ip/link_veth.c @@ -0,0 +1,86 @@ +/* + * ip/link_veth.c + * + * Virtual ETHernet tunnel supprt. + * + * Author: Pavel Emelianov <xemul@...nvz.org> + */ + +#include <stdio.h> +#include <string.h> + +#include "utils.h" +#include "ip_common.h" +#include "veth.h" + +#define ETH_ALEN 6 + +static void usage(void) +{ + printf("Usage: ip link add ... " + "[peer <peer-name>] [mac <mac>] [peer_mac <mac>]\n"); +} + +static int veth_parse_opt(struct link_util *lu, int argc, char **argv, + struct nlmsghdr *hdr) +{ + __u8 mac[ETH_ALEN]; + + for (; argc != 0; argv++, argc--) { + if (strcmp(*argv, "peer") == 0) { + argv++; + argc--; + if (argc == 0) { + usage(); + return -1; + } + + addattr_l(hdr, 1024, VETH_INFO_PEER, + *argv, strlen(*argv)); + + continue; + } + + if (strcmp(*argv, "mac") == 0) { + argv++; + argc--; + if (argc == 0) { + usage(); + return -1; + } + + if (hexstring_a2n(*argv, mac, sizeof(mac)) == NULL) + return -1; + + addattr_l(hdr, 1024, VETH_INFO_MAC, + mac, ETH_ALEN); + continue; + } + + if (strcmp(*argv, "peer_mac") == 0) { + argv++; + argc--; + if (argc == 0) { + usage(); + return -1; + } + + if (hexstring_a2n(*argv, mac, sizeof(mac)) == NULL) + return -1; + + addattr_l(hdr, 1024, VETH_INFO_PEER_MAC, + mac, ETH_ALEN); + continue; + } + + usage(); + return -1; + } + + return 0; +} + +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..d52e0c5 --- /dev/null +++ b/ip/veth.h @@ -0,0 +1,15 @@ +#ifndef __NET_VETH_H__ +#define __NET_VETH_H__ + +enum { + VETH_INFO_UNSPEC, + VETH_INFO_MAC, + VETH_INFO_PEER, + VETH_INFO_PEER_MAC, + + __VETH_INFO_MAX +}; + +#define VETH_INFO_MAX (__VETH_INFO_MAX - 1) + +#endif - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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