843 lines
20 KiB
C
843 lines
20 KiB
C
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#ifndef __LINUX_RTNETLINK_H
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#define __LINUX_RTNETLINK_H
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#include <linux/netlink.h>
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/****
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* Routing/neighbour discovery messages.
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****/
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/* Types of messages */
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enum {
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RTM_BASE = 16,
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#define RTM_BASE RTM_BASE
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RTM_NEWLINK = 16,
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#define RTM_NEWLINK RTM_NEWLINK
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RTM_DELLINK,
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#define RTM_DELLINK RTM_DELLINK
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RTM_GETLINK,
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#define RTM_GETLINK RTM_GETLINK
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RTM_SETLINK,
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#define RTM_SETLINK RTM_SETLINK
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RTM_NEWADDR = 20,
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#define RTM_NEWADDR RTM_NEWADDR
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RTM_DELADDR,
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#define RTM_DELADDR RTM_DELADDR
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RTM_GETADDR,
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#define RTM_GETADDR RTM_GETADDR
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RTM_NEWROUTE = 24,
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#define RTM_NEWROUTE RTM_NEWROUTE
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RTM_DELROUTE,
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#define RTM_DELROUTE RTM_DELROUTE
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RTM_GETROUTE,
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#define RTM_GETROUTE RTM_GETROUTE
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RTM_NEWNEIGH = 28,
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#define RTM_NEWNEIGH RTM_NEWNEIGH
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RTM_DELNEIGH,
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#define RTM_DELNEIGH RTM_DELNEIGH
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RTM_GETNEIGH,
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#define RTM_GETNEIGH RTM_GETNEIGH
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RTM_NEWRULE = 32,
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#define RTM_NEWRULE RTM_NEWRULE
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RTM_DELRULE,
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#define RTM_DELRULE RTM_DELRULE
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RTM_GETRULE,
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#define RTM_GETRULE RTM_GETRULE
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RTM_NEWQDISC = 36,
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#define RTM_NEWQDISC RTM_NEWQDISC
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RTM_DELQDISC,
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#define RTM_DELQDISC RTM_DELQDISC
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RTM_GETQDISC,
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#define RTM_GETQDISC RTM_GETQDISC
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RTM_NEWTCLASS = 40,
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#define RTM_NEWTCLASS RTM_NEWTCLASS
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RTM_DELTCLASS,
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#define RTM_DELTCLASS RTM_DELTCLASS
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RTM_GETTCLASS,
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#define RTM_GETTCLASS RTM_GETTCLASS
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RTM_NEWTFILTER = 44,
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#define RTM_NEWTFILTER RTM_NEWTFILTER
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RTM_DELTFILTER,
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#define RTM_DELTFILTER RTM_DELTFILTER
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RTM_GETTFILTER,
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#define RTM_GETTFILTER RTM_GETTFILTER
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RTM_NEWACTION = 48,
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#define RTM_NEWACTION RTM_NEWACTION
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RTM_DELACTION,
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#define RTM_DELACTION RTM_DELACTION
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RTM_GETACTION,
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#define RTM_GETACTION RTM_GETACTION
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RTM_NEWPREFIX = 52,
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#define RTM_NEWPREFIX RTM_NEWPREFIX
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RTM_GETPREFIX = 54,
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#define RTM_GETPREFIX RTM_GETPREFIX
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RTM_GETMULTICAST = 58,
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#define RTM_GETMULTICAST RTM_GETMULTICAST
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RTM_GETANYCAST = 62,
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#define RTM_GETANYCAST RTM_GETANYCAST
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RTM_MAX,
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#define RTM_MAX RTM_MAX
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};
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/*
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Generic structure for encapsulation of optional route information.
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It is reminiscent of sockaddr, but with sa_family replaced
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with attribute type.
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*/
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struct rtattr
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{
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unsigned short rta_len;
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unsigned short rta_type;
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};
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/* Macros to handle rtattributes */
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#define RTA_ALIGNTO 4
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#define RTA_ALIGN(len) ( ((len)+RTA_ALIGNTO-1) & ~(RTA_ALIGNTO-1) )
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#define RTA_OK(rta,len) ((len) >= (int)sizeof(struct rtattr) && \
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(rta)->rta_len >= sizeof(struct rtattr) && \
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(rta)->rta_len <= (len))
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#define RTA_NEXT(rta,attrlen) ((attrlen) -= RTA_ALIGN((rta)->rta_len), \
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(struct rtattr*)(((char*)(rta)) + RTA_ALIGN((rta)->rta_len)))
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#define RTA_LENGTH(len) (RTA_ALIGN(sizeof(struct rtattr)) + (len))
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#define RTA_SPACE(len) RTA_ALIGN(RTA_LENGTH(len))
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#define RTA_DATA(rta) ((void*)(((char*)(rta)) + RTA_LENGTH(0)))
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#define RTA_PAYLOAD(rta) ((int)((rta)->rta_len) - RTA_LENGTH(0))
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/******************************************************************************
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* Definitions used in routing table administration.
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****/
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struct rtmsg
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{
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unsigned char rtm_family;
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unsigned char rtm_dst_len;
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unsigned char rtm_src_len;
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unsigned char rtm_tos;
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unsigned char rtm_table; /* Routing table id */
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unsigned char rtm_protocol; /* Routing protocol; see below */
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unsigned char rtm_scope; /* See below */
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unsigned char rtm_type; /* See below */
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unsigned rtm_flags;
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};
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/* rtm_type */
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enum
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{
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RTN_UNSPEC,
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RTN_UNICAST, /* Gateway or direct route */
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RTN_LOCAL, /* Accept locally */
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RTN_BROADCAST, /* Accept locally as broadcast,
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send as broadcast */
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RTN_ANYCAST, /* Accept locally as broadcast,
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but send as unicast */
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RTN_MULTICAST, /* Multicast route */
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RTN_BLACKHOLE, /* Drop */
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RTN_UNREACHABLE, /* Destination is unreachable */
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RTN_PROHIBIT, /* Administratively prohibited */
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RTN_THROW, /* Not in this table */
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RTN_NAT, /* Translate this address */
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RTN_XRESOLVE, /* Use external resolver */
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__RTN_MAX
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};
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#define RTN_MAX (__RTN_MAX - 1)
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/* rtm_protocol */
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#define RTPROT_UNSPEC 0
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#define RTPROT_REDIRECT 1 /* Route installed by ICMP redirects;
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not used by current IPv4 */
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#define RTPROT_KERNEL 2 /* Route installed by kernel */
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#define RTPROT_BOOT 3 /* Route installed during boot */
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#define RTPROT_STATIC 4 /* Route installed by administrator */
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/* Values of protocol >= RTPROT_STATIC are not interpreted by kernel;
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they are just passed from user and back as is.
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It will be used by hypothetical multiple routing daemons.
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Note that protocol values should be standardized in order to
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avoid conflicts.
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*/
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#define RTPROT_GATED 8 /* Apparently, GateD */
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#define RTPROT_RA 9 /* RDISC/ND router advertisements */
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#define RTPROT_MRT 10 /* Merit MRT */
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#define RTPROT_ZEBRA 11 /* Zebra */
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#define RTPROT_BIRD 12 /* BIRD */
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#define RTPROT_DNROUTED 13 /* DECnet routing daemon */
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#define RTPROT_XORP 14 /* XORP */
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/* rtm_scope
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Really it is not scope, but sort of distance to the destination.
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NOWHERE are reserved for not existing destinations, HOST is our
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local addresses, LINK are destinations, located on directly attached
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link and UNIVERSE is everywhere in the Universe.
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Intermediate values are also possible f.e. interior routes
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could be assigned a value between UNIVERSE and LINK.
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*/
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enum rt_scope_t
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{
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RT_SCOPE_UNIVERSE=0,
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/* User defined values */
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RT_SCOPE_SITE=200,
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RT_SCOPE_LINK=253,
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RT_SCOPE_HOST=254,
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RT_SCOPE_NOWHERE=255
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};
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/* rtm_flags */
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#define RTM_F_NOTIFY 0x100 /* Notify user of route change */
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#define RTM_F_CLONED 0x200 /* This route is cloned */
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#define RTM_F_EQUALIZE 0x400 /* Multipath equalizer: NI */
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#define RTM_F_PREFIX 0x800 /* Prefix addresses */
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/* Reserved table identifiers */
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enum rt_class_t
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{
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RT_TABLE_UNSPEC=0,
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/* User defined values */
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RT_TABLE_DEFAULT=253,
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RT_TABLE_MAIN=254,
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RT_TABLE_LOCAL=255,
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__RT_TABLE_MAX
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};
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#define RT_TABLE_MAX (__RT_TABLE_MAX - 1)
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/* Routing message attributes */
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enum rtattr_type_t
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{
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RTA_UNSPEC,
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RTA_DST,
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RTA_SRC,
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RTA_IIF,
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RTA_OIF,
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RTA_GATEWAY,
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RTA_PRIORITY,
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RTA_PREFSRC,
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RTA_METRICS,
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RTA_MULTIPATH,
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RTA_PROTOINFO,
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RTA_FLOW,
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RTA_CACHEINFO,
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RTA_SESSION,
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RTA_MP_ALGO,
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__RTA_MAX
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};
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#define RTA_MAX (__RTA_MAX - 1)
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#define RTM_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg))))
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#define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg))
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/* RTM_MULTIPATH --- array of struct rtnexthop.
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*
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* "struct rtnexthop" describes all necessary nexthop information,
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* i.e. parameters of path to a destination via this nexthop.
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*
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* At the moment it is impossible to set different prefsrc, mtu, window
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* and rtt for different paths from multipath.
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*/
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struct rtnexthop
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{
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unsigned short rtnh_len;
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unsigned char rtnh_flags;
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unsigned char rtnh_hops;
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int rtnh_ifindex;
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};
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/* rtnh_flags */
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#define RTNH_F_DEAD 1 /* Nexthop is dead (used by multipath) */
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#define RTNH_F_PERVASIVE 2 /* Do recursive gateway lookup */
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#define RTNH_F_ONLINK 4 /* Gateway is forced on link */
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/* Macros to handle hexthops */
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#define RTNH_ALIGNTO 4
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#define RTNH_ALIGN(len) ( ((len)+RTNH_ALIGNTO-1) & ~(RTNH_ALIGNTO-1) )
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#define RTNH_OK(rtnh,len) ((rtnh)->rtnh_len >= sizeof(struct rtnexthop) && \
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((int)(rtnh)->rtnh_len) <= (len))
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#define RTNH_NEXT(rtnh) ((struct rtnexthop*)(((char*)(rtnh)) + RTNH_ALIGN((rtnh)->rtnh_len)))
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#define RTNH_LENGTH(len) (RTNH_ALIGN(sizeof(struct rtnexthop)) + (len))
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#define RTNH_SPACE(len) RTNH_ALIGN(RTNH_LENGTH(len))
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#define RTNH_DATA(rtnh) ((struct rtattr*)(((char*)(rtnh)) + RTNH_LENGTH(0)))
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/* RTM_CACHEINFO */
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struct rta_cacheinfo
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{
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__u32 rta_clntref;
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__u32 rta_lastuse;
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__s32 rta_expires;
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__u32 rta_error;
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__u32 rta_used;
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#define RTNETLINK_HAVE_PEERINFO 1
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__u32 rta_id;
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__u32 rta_ts;
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__u32 rta_tsage;
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};
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/* RTM_METRICS --- array of struct rtattr with types of RTAX_* */
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enum
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{
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RTAX_UNSPEC,
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#define RTAX_UNSPEC RTAX_UNSPEC
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RTAX_LOCK,
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#define RTAX_LOCK RTAX_LOCK
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RTAX_MTU,
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#define RTAX_MTU RTAX_MTU
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RTAX_WINDOW,
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#define RTAX_WINDOW RTAX_WINDOW
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RTAX_RTT,
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#define RTAX_RTT RTAX_RTT
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RTAX_RTTVAR,
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#define RTAX_RTTVAR RTAX_RTTVAR
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RTAX_SSTHRESH,
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#define RTAX_SSTHRESH RTAX_SSTHRESH
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RTAX_CWND,
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#define RTAX_CWND RTAX_CWND
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RTAX_ADVMSS,
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#define RTAX_ADVMSS RTAX_ADVMSS
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RTAX_REORDERING,
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#define RTAX_REORDERING RTAX_REORDERING
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RTAX_HOPLIMIT,
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#define RTAX_HOPLIMIT RTAX_HOPLIMIT
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RTAX_INITCWND,
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#define RTAX_INITCWND RTAX_INITCWND
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RTAX_FEATURES,
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#define RTAX_FEATURES RTAX_FEATURES
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__RTAX_MAX
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};
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#define RTAX_MAX (__RTAX_MAX - 1)
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#define RTAX_FEATURE_ECN 0x00000001
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#define RTAX_FEATURE_SACK 0x00000002
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#define RTAX_FEATURE_TIMESTAMP 0x00000004
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#define RTAX_FEATURE_ALLFRAG 0x00000008
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struct rta_session
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{
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__u8 proto;
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union {
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struct {
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__u16 sport;
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__u16 dport;
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} ports;
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struct {
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__u8 type;
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__u8 code;
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__u16 ident;
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} icmpt;
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__u32 spi;
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} u;
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};
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|
||
|
|
/*********************************************************
|
||
|
|
* Interface address.
|
||
|
|
****/
|
||
|
|
|
||
|
|
struct ifaddrmsg
|
||
|
|
{
|
||
|
|
unsigned char ifa_family;
|
||
|
|
unsigned char ifa_prefixlen; /* The prefix length */
|
||
|
|
unsigned char ifa_flags; /* Flags */
|
||
|
|
unsigned char ifa_scope; /* See above */
|
||
|
|
int ifa_index; /* Link index */
|
||
|
|
};
|
||
|
|
|
||
|
|
enum
|
||
|
|
{
|
||
|
|
IFA_UNSPEC,
|
||
|
|
IFA_ADDRESS,
|
||
|
|
IFA_LOCAL,
|
||
|
|
IFA_LABEL,
|
||
|
|
IFA_BROADCAST,
|
||
|
|
IFA_ANYCAST,
|
||
|
|
IFA_CACHEINFO,
|
||
|
|
IFA_MULTICAST,
|
||
|
|
__IFA_MAX
|
||
|
|
};
|
||
|
|
|
||
|
|
#define IFA_MAX (__IFA_MAX - 1)
|
||
|
|
|
||
|
|
/* ifa_flags */
|
||
|
|
|
||
|
|
#define IFA_F_SECONDARY 0x01
|
||
|
|
#define IFA_F_TEMPORARY IFA_F_SECONDARY
|
||
|
|
|
||
|
|
#define IFA_F_DEPRECATED 0x20
|
||
|
|
#define IFA_F_TENTATIVE 0x40
|
||
|
|
#define IFA_F_PERMANENT 0x80
|
||
|
|
|
||
|
|
struct ifa_cacheinfo
|
||
|
|
{
|
||
|
|
__u32 ifa_prefered;
|
||
|
|
__u32 ifa_valid;
|
||
|
|
__u32 cstamp; /* created timestamp, hundredths of seconds */
|
||
|
|
__u32 tstamp; /* updated timestamp, hundredths of seconds */
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
#define IFA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
|
||
|
|
#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg))
|
||
|
|
|
||
|
|
/*
|
||
|
|
Important comment:
|
||
|
|
IFA_ADDRESS is prefix address, rather than local interface address.
|
||
|
|
It makes no difference for normally configured broadcast interfaces,
|
||
|
|
but for point-to-point IFA_ADDRESS is DESTINATION address,
|
||
|
|
local address is supplied in IFA_LOCAL attribute.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**************************************************************
|
||
|
|
* Neighbour discovery.
|
||
|
|
****/
|
||
|
|
|
||
|
|
struct ndmsg
|
||
|
|
{
|
||
|
|
unsigned char ndm_family;
|
||
|
|
unsigned char ndm_pad1;
|
||
|
|
unsigned short ndm_pad2;
|
||
|
|
int ndm_ifindex; /* Link index */
|
||
|
|
__u16 ndm_state;
|
||
|
|
__u8 ndm_flags;
|
||
|
|
__u8 ndm_type;
|
||
|
|
};
|
||
|
|
|
||
|
|
enum
|
||
|
|
{
|
||
|
|
NDA_UNSPEC,
|
||
|
|
NDA_DST,
|
||
|
|
NDA_LLADDR,
|
||
|
|
NDA_CACHEINFO,
|
||
|
|
NDA_PROBES,
|
||
|
|
__NDA_MAX
|
||
|
|
};
|
||
|
|
|
||
|
|
#define NDA_MAX (__NDA_MAX - 1)
|
||
|
|
|
||
|
|
#define NDA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg))))
|
||
|
|
#define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndmsg))
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Neighbor Cache Entry Flags
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define NTF_PROXY 0x08 /* == ATF_PUBL */
|
||
|
|
#define NTF_ROUTER 0x80
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Neighbor Cache Entry States.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define NUD_INCOMPLETE 0x01
|
||
|
|
#define NUD_REACHABLE 0x02
|
||
|
|
#define NUD_STALE 0x04
|
||
|
|
#define NUD_DELAY 0x08
|
||
|
|
#define NUD_PROBE 0x10
|
||
|
|
#define NUD_FAILED 0x20
|
||
|
|
|
||
|
|
/* Dummy states */
|
||
|
|
#define NUD_NOARP 0x40
|
||
|
|
#define NUD_PERMANENT 0x80
|
||
|
|
#define NUD_NONE 0x00
|
||
|
|
|
||
|
|
|
||
|
|
struct nda_cacheinfo
|
||
|
|
{
|
||
|
|
__u32 ndm_confirmed;
|
||
|
|
__u32 ndm_used;
|
||
|
|
__u32 ndm_updated;
|
||
|
|
__u32 ndm_refcnt;
|
||
|
|
};
|
||
|
|
|
||
|
|
/****
|
||
|
|
* General form of address family dependent message.
|
||
|
|
****/
|
||
|
|
|
||
|
|
struct rtgenmsg
|
||
|
|
{
|
||
|
|
unsigned char rtgen_family;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*****************************************************************
|
||
|
|
* Link layer specific messages.
|
||
|
|
****/
|
||
|
|
|
||
|
|
/* struct ifinfomsg
|
||
|
|
* passes link level specific information, not dependent
|
||
|
|
* on network protocol.
|
||
|
|
*/
|
||
|
|
|
||
|
|
struct ifinfomsg
|
||
|
|
{
|
||
|
|
unsigned char ifi_family;
|
||
|
|
unsigned char __ifi_pad;
|
||
|
|
unsigned short ifi_type; /* ARPHRD_* */
|
||
|
|
int ifi_index; /* Link index */
|
||
|
|
unsigned ifi_flags; /* IFF_* flags */
|
||
|
|
unsigned ifi_change; /* IFF_* change mask */
|
||
|
|
};
|
||
|
|
|
||
|
|
/********************************************************************
|
||
|
|
* prefix information
|
||
|
|
****/
|
||
|
|
|
||
|
|
struct prefixmsg
|
||
|
|
{
|
||
|
|
unsigned char prefix_family;
|
||
|
|
int prefix_ifindex;
|
||
|
|
unsigned char prefix_type;
|
||
|
|
unsigned char prefix_len;
|
||
|
|
unsigned char prefix_flags;
|
||
|
|
};
|
||
|
|
|
||
|
|
enum
|
||
|
|
{
|
||
|
|
PREFIX_UNSPEC,
|
||
|
|
PREFIX_ADDRESS,
|
||
|
|
PREFIX_CACHEINFO,
|
||
|
|
__PREFIX_MAX
|
||
|
|
};
|
||
|
|
|
||
|
|
#define PREFIX_MAX (__PREFIX_MAX - 1)
|
||
|
|
|
||
|
|
struct prefix_cacheinfo
|
||
|
|
{
|
||
|
|
__u32 preferred_time;
|
||
|
|
__u32 valid_time;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* The struct should be in sync with struct net_device_stats */
|
||
|
|
struct rtnl_link_stats
|
||
|
|
{
|
||
|
|
__u32 rx_packets; /* total packets received */
|
||
|
|
__u32 tx_packets; /* total packets transmitted */
|
||
|
|
__u32 rx_bytes; /* total bytes received */
|
||
|
|
__u32 tx_bytes; /* total bytes transmitted */
|
||
|
|
__u32 rx_errors; /* bad packets received */
|
||
|
|
__u32 tx_errors; /* packet transmit problems */
|
||
|
|
__u32 rx_dropped; /* no space in linux buffers */
|
||
|
|
__u32 tx_dropped; /* no space available in linux */
|
||
|
|
__u32 multicast; /* multicast packets received */
|
||
|
|
__u32 collisions;
|
||
|
|
|
||
|
|
/* detailed rx_errors: */
|
||
|
|
__u32 rx_length_errors;
|
||
|
|
__u32 rx_over_errors; /* receiver ring buff overflow */
|
||
|
|
__u32 rx_crc_errors; /* recved pkt with crc error */
|
||
|
|
__u32 rx_frame_errors; /* recv'd frame alignment error */
|
||
|
|
__u32 rx_fifo_errors; /* recv'r fifo overrun */
|
||
|
|
__u32 rx_missed_errors; /* receiver missed packet */
|
||
|
|
|
||
|
|
/* detailed tx_errors */
|
||
|
|
__u32 tx_aborted_errors;
|
||
|
|
__u32 tx_carrier_errors;
|
||
|
|
__u32 tx_fifo_errors;
|
||
|
|
__u32 tx_heartbeat_errors;
|
||
|
|
__u32 tx_window_errors;
|
||
|
|
|
||
|
|
/* for cslip etc */
|
||
|
|
__u32 rx_compressed;
|
||
|
|
__u32 tx_compressed;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* The struct should be in sync with struct ifmap */
|
||
|
|
struct rtnl_link_ifmap
|
||
|
|
{
|
||
|
|
__u64 mem_start;
|
||
|
|
__u64 mem_end;
|
||
|
|
__u64 base_addr;
|
||
|
|
__u16 irq;
|
||
|
|
__u8 dma;
|
||
|
|
__u8 port;
|
||
|
|
};
|
||
|
|
|
||
|
|
enum
|
||
|
|
{
|
||
|
|
IFLA_UNSPEC,
|
||
|
|
IFLA_ADDRESS,
|
||
|
|
IFLA_BROADCAST,
|
||
|
|
IFLA_IFNAME,
|
||
|
|
IFLA_MTU,
|
||
|
|
IFLA_LINK,
|
||
|
|
IFLA_QDISC,
|
||
|
|
IFLA_STATS,
|
||
|
|
IFLA_COST,
|
||
|
|
#define IFLA_COST IFLA_COST
|
||
|
|
IFLA_PRIORITY,
|
||
|
|
#define IFLA_PRIORITY IFLA_PRIORITY
|
||
|
|
IFLA_MASTER,
|
||
|
|
#define IFLA_MASTER IFLA_MASTER
|
||
|
|
IFLA_WIRELESS, /* Wireless Extension event - see wireless.h */
|
||
|
|
#define IFLA_WIRELESS IFLA_WIRELESS
|
||
|
|
IFLA_PROTINFO, /* Protocol specific information for a link */
|
||
|
|
#define IFLA_PROTINFO IFLA_PROTINFO
|
||
|
|
IFLA_TXQLEN,
|
||
|
|
#define IFLA_TXQLEN IFLA_TXQLEN
|
||
|
|
IFLA_MAP,
|
||
|
|
#define IFLA_MAP IFLA_MAP
|
||
|
|
IFLA_WEIGHT,
|
||
|
|
#define IFLA_WEIGHT IFLA_WEIGHT
|
||
|
|
__IFLA_MAX
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
#define IFLA_MAX (__IFLA_MAX - 1)
|
||
|
|
|
||
|
|
#define IFLA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg))))
|
||
|
|
#define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg))
|
||
|
|
|
||
|
|
/* ifi_flags.
|
||
|
|
|
||
|
|
IFF_* flags.
|
||
|
|
|
||
|
|
The only change is:
|
||
|
|
IFF_LOOPBACK, IFF_BROADCAST and IFF_POINTOPOINT are
|
||
|
|
more not changeable by user. They describe link media
|
||
|
|
characteristics and set by device driver.
|
||
|
|
|
||
|
|
Comments:
|
||
|
|
- Combination IFF_BROADCAST|IFF_POINTOPOINT is invalid
|
||
|
|
- If neither of these three flags are set;
|
||
|
|
the interface is NBMA.
|
||
|
|
|
||
|
|
- IFF_MULTICAST does not mean anything special:
|
||
|
|
multicasts can be used on all not-NBMA links.
|
||
|
|
IFF_MULTICAST means that this media uses special encapsulation
|
||
|
|
for multicast frames. Apparently, all IFF_POINTOPOINT and
|
||
|
|
IFF_BROADCAST devices are able to use multicasts too.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* IFLA_LINK.
|
||
|
|
For usual devices it is equal ifi_index.
|
||
|
|
If it is a "virtual interface" (f.e. tunnel), ifi_link
|
||
|
|
can point to real physical interface (f.e. for bandwidth calculations),
|
||
|
|
or maybe 0, what means, that real media is unknown (usual
|
||
|
|
for IPIP tunnels, when route to endpoint is allowed to change)
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Subtype attributes for IFLA_PROTINFO */
|
||
|
|
enum
|
||
|
|
{
|
||
|
|
IFLA_INET6_UNSPEC,
|
||
|
|
IFLA_INET6_FLAGS, /* link flags */
|
||
|
|
IFLA_INET6_CONF, /* sysctl parameters */
|
||
|
|
IFLA_INET6_STATS, /* statistics */
|
||
|
|
IFLA_INET6_MCAST, /* MC things. What of them? */
|
||
|
|
IFLA_INET6_CACHEINFO, /* time values and max reasm size */
|
||
|
|
__IFLA_INET6_MAX
|
||
|
|
};
|
||
|
|
|
||
|
|
#define IFLA_INET6_MAX (__IFLA_INET6_MAX - 1)
|
||
|
|
|
||
|
|
struct ifla_cacheinfo
|
||
|
|
{
|
||
|
|
__u32 max_reasm_len;
|
||
|
|
__u32 tstamp; /* ipv6InterfaceTable updated timestamp */
|
||
|
|
__u32 reachable_time;
|
||
|
|
__u32 retrans_time;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*****************************************************************
|
||
|
|
* Traffic control messages.
|
||
|
|
****/
|
||
|
|
|
||
|
|
struct tcmsg
|
||
|
|
{
|
||
|
|
unsigned char tcm_family;
|
||
|
|
unsigned char tcm__pad1;
|
||
|
|
unsigned short tcm__pad2;
|
||
|
|
int tcm_ifindex;
|
||
|
|
__u32 tcm_handle;
|
||
|
|
__u32 tcm_parent;
|
||
|
|
__u32 tcm_info;
|
||
|
|
};
|
||
|
|
|
||
|
|
enum
|
||
|
|
{
|
||
|
|
TCA_UNSPEC,
|
||
|
|
TCA_KIND,
|
||
|
|
TCA_OPTIONS,
|
||
|
|
TCA_STATS,
|
||
|
|
TCA_XSTATS,
|
||
|
|
TCA_RATE,
|
||
|
|
TCA_FCNT,
|
||
|
|
TCA_STATS2,
|
||
|
|
__TCA_MAX
|
||
|
|
};
|
||
|
|
|
||
|
|
#define TCA_MAX (__TCA_MAX - 1)
|
||
|
|
|
||
|
|
#define TCA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg))))
|
||
|
|
#define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg))
|
||
|
|
|
||
|
|
|
||
|
|
/* RTnetlink multicast groups */
|
||
|
|
|
||
|
|
#define RTMGRP_LINK 1
|
||
|
|
#define RTMGRP_NOTIFY 2
|
||
|
|
#define RTMGRP_NEIGH 4
|
||
|
|
#define RTMGRP_TC 8
|
||
|
|
|
||
|
|
#define RTMGRP_IPV4_IFADDR 0x10
|
||
|
|
#define RTMGRP_IPV4_MROUTE 0x20
|
||
|
|
#define RTMGRP_IPV4_ROUTE 0x40
|
||
|
|
|
||
|
|
#define RTMGRP_IPV6_IFADDR 0x100
|
||
|
|
#define RTMGRP_IPV6_MROUTE 0x200
|
||
|
|
#define RTMGRP_IPV6_ROUTE 0x400
|
||
|
|
#define RTMGRP_IPV6_IFINFO 0x800
|
||
|
|
|
||
|
|
#define RTMGRP_DECnet_IFADDR 0x1000
|
||
|
|
#define RTMGRP_DECnet_ROUTE 0x4000
|
||
|
|
|
||
|
|
#define RTMGRP_IPV6_PREFIX 0x20000
|
||
|
|
|
||
|
|
/* TC action piece */
|
||
|
|
struct tcamsg
|
||
|
|
{
|
||
|
|
unsigned char tca_family;
|
||
|
|
unsigned char tca__pad1;
|
||
|
|
unsigned short tca__pad2;
|
||
|
|
};
|
||
|
|
#define TA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcamsg))))
|
||
|
|
#define TA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcamsg))
|
||
|
|
#define TCA_ACT_TAB 1 /* attr type must be >=1 */
|
||
|
|
#define TCAA_MAX 1
|
||
|
|
|
||
|
|
/* End of information exported to user level */
|
||
|
|
|
||
|
|
#ifdef __KERNEL__
|
||
|
|
|
||
|
|
#include <linux/config.h>
|
||
|
|
|
||
|
|
extern size_t rtattr_strlcpy(char *dest, const struct rtattr *rta, size_t size);
|
||
|
|
static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str)
|
||
|
|
{
|
||
|
|
int len = strlen(str) + 1;
|
||
|
|
return len > rta->rta_len || memcmp(RTA_DATA(rta), str, len);
|
||
|
|
}
|
||
|
|
|
||
|
|
extern int rtattr_parse(struct rtattr *tb[], int maxattr, struct rtattr *rta, int len);
|
||
|
|
|
||
|
|
#define rtattr_parse_nested(tb, max, rta) \
|
||
|
|
rtattr_parse((tb), (max), RTA_DATA((rta)), RTA_PAYLOAD((rta)))
|
||
|
|
|
||
|
|
extern struct sock *rtnl;
|
||
|
|
|
||
|
|
struct rtnetlink_link
|
||
|
|
{
|
||
|
|
int (*doit)(struct sk_buff *, struct nlmsghdr*, void *attr);
|
||
|
|
int (*dumpit)(struct sk_buff *, struct netlink_callback *cb);
|
||
|
|
};
|
||
|
|
|
||
|
|
extern struct rtnetlink_link * rtnetlink_links[NPROTO];
|
||
|
|
extern int rtnetlink_send(struct sk_buff *skb, u32 pid, u32 group, int echo);
|
||
|
|
extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics);
|
||
|
|
|
||
|
|
extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data);
|
||
|
|
|
||
|
|
#define RTA_PUT(skb, attrtype, attrlen, data) \
|
||
|
|
({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
|
||
|
|
goto rtattr_failure; \
|
||
|
|
__rta_fill(skb, attrtype, attrlen, data); })
|
||
|
|
|
||
|
|
#define RTA_PUT_NOHDR(skb, attrlen, data) \
|
||
|
|
({ if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \
|
||
|
|
goto rtattr_failure; \
|
||
|
|
memcpy(skb_put(skb, RTA_ALIGN(attrlen)), data, attrlen); })
|
||
|
|
|
||
|
|
static inline struct rtattr *
|
||
|
|
__rta_reserve(struct sk_buff *skb, int attrtype, int attrlen)
|
||
|
|
{
|
||
|
|
struct rtattr *rta;
|
||
|
|
int size = RTA_LENGTH(attrlen);
|
||
|
|
|
||
|
|
rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size));
|
||
|
|
rta->rta_type = attrtype;
|
||
|
|
rta->rta_len = size;
|
||
|
|
return rta;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define __RTA_PUT(skb, attrtype, attrlen) \
|
||
|
|
({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
|
||
|
|
goto rtattr_failure; \
|
||
|
|
__rta_reserve(skb, attrtype, attrlen); })
|
||
|
|
|
||
|
|
extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change);
|
||
|
|
|
||
|
|
extern struct semaphore rtnl_sem;
|
||
|
|
|
||
|
|
#define rtnl_shlock() down(&rtnl_sem)
|
||
|
|
#define rtnl_shlock_nowait() down_trylock(&rtnl_sem)
|
||
|
|
|
||
|
|
#define rtnl_shunlock() do { up(&rtnl_sem); \
|
||
|
|
if (rtnl && rtnl->sk_receive_queue.qlen) \
|
||
|
|
rtnl->sk_data_ready(rtnl, 0); \
|
||
|
|
} while(0)
|
||
|
|
|
||
|
|
extern void rtnl_lock(void);
|
||
|
|
extern int rtnl_lock_interruptible(void);
|
||
|
|
extern void rtnl_unlock(void);
|
||
|
|
extern void rtnetlink_init(void);
|
||
|
|
|
||
|
|
#define ASSERT_RTNL() do { \
|
||
|
|
if (unlikely(down_trylock(&rtnl_sem) == 0)) { \
|
||
|
|
up(&rtnl_sem); \
|
||
|
|
printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
|
||
|
|
__FILE__, __LINE__); \
|
||
|
|
dump_stack(); \
|
||
|
|
} \
|
||
|
|
} while(0)
|
||
|
|
|
||
|
|
#define BUG_TRAP(x) do { \
|
||
|
|
if (unlikely(!(x))) { \
|
||
|
|
printk(KERN_ERR "KERNEL: assertion (%s) failed at %s (%d)\n", \
|
||
|
|
#x, __FILE__ , __LINE__); \
|
||
|
|
} \
|
||
|
|
} while(0)
|
||
|
|
|
||
|
|
#endif /* __KERNEL__ */
|
||
|
|
|
||
|
|
|
||
|
|
#endif /* __LINUX_RTNETLINK_H */
|