iproute2.diff

一个可以实现MPLS实验的linux源代码.你不仅可以实现单层标签的转发,还可以实现2个标签的实验,很好的.

diff -uNr iproute2/include/linux/genetlink.h iproute2-mpls/include/linux/genetlink.h
--- iproute2/include/linux/genetlink.h	1969-12-31 18:00:00.000000000 -0600
+++ iproute2-mpls/include/linux/genetlink.h	2005-12-08 22:01:52.000000000 -0600
@@ -0,0 +1,82 @@
+#ifndef __LINUX_GENERIC_NETLINK_H
+#define __LINUX_GENERIC_NETLINK_H
+
+#include <linux/netlink.h>
+
+#define GENL_NAMSIZ	16	/* length of family name */
+
+#define GENL_MIN_ID	NLMSG_MIN_TYPE
+#define GENL_MAX_ID	1023
+
+struct genlmsghdr {
+	__u8	cmd;
+	__u8	version;
+	__u16	reserved;
+};
+
+#define GENL_HDRLEN	NLMSG_ALIGN(sizeof(struct genlmsghdr))
+
+/*
+ * List of reserved static generic netlink identifiers:
+ */
+#define GENL_ID_GENERATE	0
+#define GENL_ID_CTRL		NLMSG_MIN_TYPE
+
+/**************************************************************************
+ * Controller
+ **************************************************************************/
+
+enum {
+	CTRL_CMD_UNSPEC,
+	CTRL_CMD_NEWFAMILY,
+	CTRL_CMD_DELFAMILY,
+	CTRL_CMD_GETFAMILY,
+	CTRL_CMD_NEWOPS,
+	CTRL_CMD_DELOPS,
+	CTRL_CMD_GETOPS,
+	__CTRL_CMD_MAX,
+};
+
+#define CTRL_CMD_MAX (__CTRL_CMD_MAX - 1)
+
+enum {
+	CTRL_ATTR_UNSPEC,
+	CTRL_ATTR_FAMILY_ID,
+	CTRL_ATTR_FAMILY_NAME,
+	__CTRL_ATTR_MAX,
+};
+
+#define CTRL_ATTR_MAX (__CTRL_ATTR_MAX - 1)
+
+enum {
+	MPLS_CMD_UNSPEC,
+	MPLS_CMD_NEWILM,
+	MPLS_CMD_DELILM,
+	MPLS_CMD_GETILM,
+	MPLS_CMD_NEWNHLFE,
+	MPLS_CMD_DELNHLFE,
+	MPLS_CMD_GETNHLFE,
+	MPLS_CMD_NEWXC,
+	MPLS_CMD_DELXC,
+	MPLS_CMD_GETXC,
+	MPLS_CMD_SETLABELSPACE,
+	MPLS_CMD_GETLABELSPACE,
+	__MPLS_CMD_MAX,
+};
+
+#define MPLS_CMD_MAX (__MPLS_CMD_MAX - 1)
+
+enum {
+	MPLS_ATTR_UNSPEC,
+	MPLS_ATTR_ILM,
+	MPLS_ATTR_NHLFE,
+	MPLS_ATTR_XC,
+	MPLS_ATTR_LABELSPACE,
+	MPLS_ATTR_INSTR,
+	MPLS_ATTR_STATS,
+	__MPLS_ATTR_MAX,
+};
+
+#define MPLS_ATTR_MAX (__MPLS_ATTR_MAX - 1)
+
+#endif	/* __LINUX_GENERIC_NETLINK_H */
diff -uNr iproute2/include/linux/mpls.h iproute2-mpls/include/linux/mpls.h
--- iproute2/include/linux/mpls.h	1969-12-31 18:00:00.000000000 -0600
+++ iproute2-mpls/include/linux/mpls.h	2005-12-08 22:01:52.000000000 -0600
@@ -0,0 +1,255 @@
+/*****************************************************************************
+ * MPLS
+ *      An implementation of the MPLS (MultiProtocol Label
+ *      Switching Architecture) for Linux.
+ *
+ * Authors:
+ *          James Leu        <[e-mail]>
+ *          Ramon Casellas   <[e-mail]>
+ *
+ *   (c) 1999-2004   James Leu        <[e-mail]>
+ *   (c) 2003-2004   Ramon Casellas   <[e-mail]>
+ *
+ * include/linux/mpls.h
+ *      Data types and structs used by userspace programs to access MPLS
+ *      forwarding. Most interface with the MPLS subsystem is IOCTL based
+ *
+ *      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.
+ ****************************************************************************/
+
+#ifndef _LINUX_MPLS_H_
+#define _LINUX_MPLS_H_
+
+#ifdef __KERNEL__
+#include <linux/socket.h>
+#include <linux/if.h>
+#else
+#include <sys/socket.h>
+#include <net/if.h>
+#endif
+
+#define MPLS_NUM_OPS		8
+
+#define MPLS_LINUX_VERSION	0x01090500
+
+#define	MPLS_GRP_ILM	1
+#define	MPLS_GRP_NHLFE	2
+#define	MPLS_GRP_XC	4
+#define	MPLS_GRP_LABELSPACE 8
+
+#define MPLS_IPV4_EXPLICIT_NULL	0       /* only valid as sole label stack entry
+					   Pop label and send to IPv4 stack */
+#define MPLS_ROUTER_ALERT	1       /* anywhere except bottom, packet it is
+					   forwared to a software module
+					   determined by the next label,
+					   if the packet is forwarded, push this
+					   label back on */
+#define MPLS_IPV6_EXPLICIT_NULL	2       /* only valid as sole label stack entry
+					   Pop label and send to IPv6 stack */
+#define MPLS_IMPLICIT_NULL	3       /* a LIB with this, signifies to pop
+					   the next label and use that */
+
+#define MPLS_CHANGE_MTU		0x01
+#define MPLS_CHANGE_PROP_TTL	0x02
+#define MPLS_CHANGE_INSTR	0x04
+#define MPLS_CHANGE_PROTO	0x10
+
+enum mpls_dir {
+	MPLS_IN = 0x10,
+	MPLS_OUT = 0x20
+};
+
+enum mpls_opcode_enum {
+	MPLS_OP_NOP = 0x00,
+	MPLS_OP_POP,
+	MPLS_OP_PEEK,
+	MPLS_OP_PUSH,
+	MPLS_OP_DLV,
+	MPLS_OP_FWD,
+	MPLS_OP_NF_FWD,
+	MPLS_OP_DS_FWD,
+	MPLS_OP_EXP_FWD,
+	MPLS_OP_SET,
+	MPLS_OP_SET_RX,
+	MPLS_OP_SET_TC,
+	MPLS_OP_SET_DS,
+	MPLS_OP_SET_EXP,
+	MPLS_OP_EXP2TC,
+	MPLS_OP_EXP2DS,
+	MPLS_OP_TC2EXP,
+	MPLS_OP_DS2EXP,
+	MPLS_OP_NF2EXP,
+	MPLS_OP_SET_NF,
+	MPLS_OP_MAX
+};
+
+enum mpls_label_type_enum {
+	MPLS_LABEL_GEN = 1,
+	MPLS_LABEL_ATM,
+	MPLS_LABEL_FR,
+	MPLS_LABEL_KEY
+};
+
+struct mpls_label_atm {
+	u_int16_t  mla_vpi;
+	u_int16_t  mla_vci;
+};
+
+struct mpls_label {
+	enum mpls_label_type_enum ml_type;
+	union {
+		u_int32_t ml_key;
+		u_int32_t ml_gen;
+		u_int32_t ml_fr;
+		struct mpls_label_atm ml_atm;
+	} u;
+	int ml_index;
+};
+
+struct mpls_in_label_req {
+	unsigned int      mil_proto;
+	struct mpls_label mil_label;
+	unsigned char     mil_change_flag;
+};
+
+#define MPLS_LABELSPACE_MAX	255
+
+struct mpls_labelspace_req {
+	int mls_ifindex;                  /* Index to the MPLS-enab. interface*/
+	int mls_labelspace;               /* Labelspace IN/SET -- OUT/GET     */
+};
+
+struct mpls_nexthop_info {
+	unsigned int    mni_if;
+	struct sockaddr mni_addr;
+};
+
+struct mpls_out_label_req {
+	struct mpls_label mol_label;
+	u_int32_t         mol_mtu;
+	int8_t            mol_propagate_ttl;
+	unsigned char     mol_change_flag;
+};
+
+struct mpls_netfilter_target_info {
+        u_int32_t key;
+
+	/* only used by the netfilter kernel modules */
+        void *nhlfe;
+        void *proto;
+};
+
+struct mpls_xconnect_req {
+	struct mpls_label mx_in;
+	struct mpls_label mx_out;
+};
+
+struct mpls_tunnel_req {
+	char mt_ifname[IFNAMSIZ];
+	unsigned int mt_nhlfe_key;
+};
+
+#define MPLS_NFMARK_NUM 64
+
+struct mpls_nfmark_fwd {
+	unsigned int nf_key[MPLS_NFMARK_NUM];
+	unsigned short nf_mask;
+};
+
+#define MPLS_DSMARK_NUM 64
+
+struct mpls_dsmark_fwd {
+	unsigned int df_key[MPLS_DSMARK_NUM];
+	unsigned char df_mask;
+};
+
+#define MPLS_TCINDEX_NUM 64
+
+struct mpls_tcindex_fwd {
+	unsigned int tc_key[MPLS_TCINDEX_NUM];
+	unsigned short tc_mask;
+};
+
+#define MPLS_EXP_NUM 8
+
+struct mpls_exp_fwd {
+	unsigned int ef_key[MPLS_EXP_NUM];
+};
+
+struct mpls_exp2tcindex {
+	unsigned short e2t[MPLS_EXP_NUM];
+};
+
+struct mpls_exp2dsmark {
+	unsigned char e2d[MPLS_EXP_NUM];
+};
+
+struct mpls_tcindex2exp {
+	unsigned char t2e_mask;
+	unsigned char t2e[MPLS_TCINDEX_NUM];
+};
+
+struct mpls_dsmark2exp {
+	unsigned char d2e_mask;
+	unsigned char d2e[MPLS_DSMARK_NUM];
+};
+
+struct mpls_nfmark2exp {
+	unsigned char n2e_mask;
+	unsigned char n2e[MPLS_NFMARK_NUM];
+};
+
+struct mpls_instr_elem {
+	unsigned short mir_opcode;
+	unsigned char mir_direction;
+	union {
+		struct mpls_label        push;
+		struct mpls_label        fwd;
+		struct mpls_nfmark_fwd   nf_fwd;
+		struct mpls_dsmark_fwd   ds_fwd;
+		struct mpls_exp_fwd      exp_fwd;
+		struct mpls_nexthop_info set;
+		unsigned int             set_rx;
+		unsigned short           set_tc;
+		unsigned short           set_ds;
+		unsigned char            set_exp;
+		struct mpls_exp2tcindex  exp2tc;
+		struct mpls_exp2dsmark   exp2ds;
+		struct mpls_tcindex2exp  tc2exp;
+		struct mpls_dsmark2exp   ds2exp;
+		struct mpls_nfmark2exp   nf2exp;
+		unsigned long            set_nf;
+	} mir_data;
+};
+
+/* Standard shortcuts */
+#define mir_push       mir_data.push
+#define mir_fwd        mir_data.fwd
+#define mir_nf_fwd     mir_data.nf_fwd
+#define mir_ds_fwd     mir_data.ds_fwd
+#define mir_exp_fwd    mir_data.exp_fwd
+#define mir_set        mir_data.set
+#define mir_set_rx     mir_data.set_rx
+#define mir_set_tc     mir_data.set_tc
+#define mir_set_tx     mir_data.set_tx
+#define mir_set_ds     mir_data.set_ds
+#define mir_set_exp    mir_data.set_exp
+#define mir_set_nf     mir_data.set_nf
+#define mir_exp2tc     mir_data.exp2tc
+#define mir_exp2ds     mir_data.exp2ds
+#define mir_tc2exp     mir_data.tc2exp
+#define mir_ds2exp     mir_data.ds2exp
+#define mir_nf2exp     mir_data.nf2exp
+
+struct mpls_instr_req {
+	struct mpls_instr_elem       mir_instr[MPLS_NUM_OPS];
+	unsigned char                mir_instr_length;
+	unsigned char                mir_direction;
+	int                          mir_index;
+	struct mpls_label            mir_label;
+};
+
+#endif
diff -uNr iproute2/include/linux/netlink.h iproute2-mpls/include/linux/netlink.h
--- iproute2/include/linux/netlink.h	2005-08-24 00:23:21.000000000 -0500
+++ iproute2-mpls/include/linux/netlink.h	2005-12-08 22:01:52.000000000 -0600
@@ -5,20 +5,22 @@
 #include <linux/types.h>
 
 #define NETLINK_ROUTE		0	/* Routing/device hook				*/
-#define NETLINK_SKIP		1	/* Reserved for ENskip  			*/
+#define NETLINK_W1		1	/* 1-wire subsystem				*/
 #define NETLINK_USERSOCK	2	/* Reserved for user mode socket protocols 	*/
 #define NETLINK_FIREWALL	3	/* Firewalling hook				*/
-#define NETLINK_TCPDIAG		4	/* TCP socket monitoring			*/
+#define NETLINK_INET_DIAG	4	/* INET socket monitoring			*/
 #define NETLINK_NFLOG		5	/* netfilter/iptables ULOG */
 #define NETLINK_XFRM		6	/* ipsec */
 #define NETLINK_SELINUX		7	/* SELinux event notifications */
-#define NETLINK_ARPD		8
+#define NETLINK_ISCSI		8	/* Open-iSCSI */
 #define NETLINK_AUDIT		9	/* auditing */
-#define NETLINK_ROUTE6		11	/* af_inet6 route comm channel */
+#define NETLINK_FIB_LOOKUP	10	
+#define NETLINK_CONNECTOR	11
+#define NETLINK_NETFILTER	12	/* netfilter subsystem */
 #define NETLINK_IP6_FW		13
 #define NETLINK_DNRTMSG		14	/* DECnet routing messages */
 #define NETLINK_KOBJECT_UEVENT	15	/* Kernel messages to userspace */
-#define NETLINK_TAPBASE		16	/* 16 to 31 are ethertap */
+#define NETLINK_GENERIC		16
 
 #define MAX_LINKS 32		
 
@@ -69,7 +71,8 @@
 
 #define NLMSG_ALIGNTO	4
 #define NLMSG_ALIGN(len) ( ((len)+NLMSG_ALIGNTO-1) & ~(NLMSG_ALIGNTO-1) )
-#define NLMSG_LENGTH(len) ((len)+NLMSG_ALIGN(sizeof(struct nlmsghdr)))
+#define NLMSG_HDRLEN	 ((int) NLMSG_ALIGN(sizeof(struct nlmsghdr)))
+#define NLMSG_LENGTH(len) ((len)+NLMSG_ALIGN(NLMSG_HDRLEN))
 #define NLMSG_SPACE(len) NLMSG_ALIGN(NLMSG_LENGTH(len))
 #define NLMSG_DATA(nlh)  ((void*)(((char*)nlh) + NLMSG_LENGTH(0)))
 #define NLMSG_NEXT(nlh,len)	 ((len) -= NLMSG_ALIGN((nlh)->nlmsg_len), \
@@ -84,12 +87,23 @@
 #define NLMSG_DONE		0x3	/* End of a dump	*/
 #define NLMSG_OVERRUN		0x4	/* Data lost		*/
 
+#define NLMSG_MIN_TYPE		0x10	/* < 0x10: reserved control messages */
+
 struct nlmsgerr
 {
 	int		error;
 	struct nlmsghdr msg;
 };
 
+#define NETLINK_ADD_MEMBERSHIP	1
+#define NETLINK_DROP_MEMBERSHIP	2
+#define NETLINK_PKTINFO		3
+
+struct nl_pktinfo
+{
+	__u32	group;
+};
+
 #define NET_MAJOR 36		/* Major 36 is reserved for networking 						*/
 
 enum {
@@ -97,5 +111,23 @@
 	NETLINK_CONNECTED,
 };
 
+/*
+ *  <------- NLA_HDRLEN ------> <-- NLA_ALIGN(payload)-->
+ * +---------------------+- - -+- - - - - - - - - -+- - -+
+ * |        Header       | Pad |     Payload       | Pad |
+ * |   (struct nlattr)   | ing |                   | ing |
+ * +---------------------+- - -+- - - - - - - - - -+- - -+
+ *  <-------------- nlattr->nla_len -------------->
+ */
+
+struct nlattr
+{
+	__u16           nla_len;
+	__u16           nla_type;
+};
+
+#define NLA_ALIGNTO		4
+#define NLA_ALIGN(len)		(((len) + NLA_ALIGNTO - 1) & ~(NLA_ALIGNTO - 1))
+#define NLA_HDRLEN		((int) NLA_ALIGN(sizeof(struct nlattr)))
 
 #endif	/* __LINUX_NETLINK_H */
diff -uNr iproute2/include/linux/rtnetlink.h iproute2-mpls/include/linux/rtnetlink.h
--- iproute2/include/linux/rtnetlink.h	2005-08-30 15:32:42.000000000 -0500
+++ iproute2-mpls/include/linux/rtnetlink.h	2005-12-08 22:01:52.000000000 -0600
@@ -89,10 +89,21 @@
 	RTM_GETANYCAST	= 62,
 #define RTM_GETANYCAST	RTM_GETANYCAST
 
-	RTM_MAX,
-#define RTM_MAX		RTM_MAX
+	RTM_NEWNEIGHTBL	= 64,
+#define RTM_NEWNEIGHTBL	RTM_NEWNEIGHTBL
+	RTM_GETNEIGHTBL	= 66,
+#define RTM_GETNEIGHTBL	RTM_GETNEIGHTBL
+	RTM_SETNEIGHTBL,
+#define RTM_SETNEIGHTBL	RTM_SETNEIGHTBL
+
+	__RTM_MAX,
+#define RTM_MAX		(((__RTM_MAX + 3) & ~3) - 1)
 };
 
+#define RTM_NR_MSGTYPES	(RTM_MAX + 1 - RTM_BASE)
+#define RTM_NR_FAMILIES	(RTM_NR_MSGTYPES >> 2)
+#define RTM_FAM(cmd)	(((cmd) - RTM_BASE) >> 2)
+
 /* 
    Generic structure for encapsulation of optional route information.
    It is reminiscent of sockaddr, but with sa_family replaced
@@ -250,6 +261,8 @@
 	RTA_FLOW,
 	RTA_CACHEINFO,
 	RTA_SESSION,
+	RTA_MP_ALGO,
+	RTA_SHIM,
 	__RTA_MAX
 };
 
@@ -346,10 +359,13 @@
 #define RTAX_FEATURE_ECN	0x00000001
 #define RTAX_FEATURE_SACK	0x00000002
 #define RTAX_FEATURE_TIMESTAMP	0x00000004
+#define RTAX_FEATURE_ALLFRAG	0x00000008
 
 struct rta_session
 {
 	__u8	proto;
+	__u8	pad1;
+	__u16	pad2;