mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-10-31 01:24:43 +00:00
ec34c702ca
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
769 lines
19 KiB
C
769 lines
19 KiB
C
#ifndef __LINUX_RTNETLINK_H
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#define __LINUX_RTNETLINK_H
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#include <linux/netlink.h>
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#include <linux/if_link.h>
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#include <linux/if_addr.h>
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#include <linux/neighbour.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_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_NEWNEIGHTBL = 64,
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#define RTM_NEWNEIGHTBL RTM_NEWNEIGHTBL
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RTM_GETNEIGHTBL = 66,
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#define RTM_GETNEIGHTBL RTM_GETNEIGHTBL
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RTM_SETNEIGHTBL,
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#define RTM_SETNEIGHTBL RTM_SETNEIGHTBL
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RTM_NEWNDUSEROPT = 68,
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#define RTM_NEWNDUSEROPT RTM_NEWNDUSEROPT
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RTM_NEWADDRLABEL = 72,
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#define RTM_NEWADDRLABEL RTM_NEWADDRLABEL
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RTM_DELADDRLABEL,
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#define RTM_NEWADDRLABEL RTM_NEWADDRLABEL
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RTM_GETADDRLABEL,
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#define RTM_GETADDRLABEL RTM_GETADDRLABEL
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__RTM_MAX,
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#define RTM_MAX (((__RTM_MAX + 3) & ~3) - 1)
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};
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#define RTM_NR_MSGTYPES (RTM_MAX + 1 - RTM_BASE)
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#define RTM_NR_FAMILIES (RTM_NR_MSGTYPES >> 2)
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#define RTM_FAM(cmd) (((cmd) - RTM_BASE) >> 2)
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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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#define RTPROT_NTK 15 /* Netsukuku */
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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_COMPAT=252,
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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=0xFFFFFFFF
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};
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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, /* no longer used */
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RTA_FLOW,
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RTA_CACHEINFO,
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RTA_SESSION, /* no longer used */
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RTA_MP_ALGO, /* no longer used */
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RTA_TABLE,
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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_RTO_MIN,
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#define RTAX_RTO_MIN RTAX_RTO_MIN
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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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__u8 pad1;
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__u16 pad2;
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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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/****
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* General form of address family dependent message.
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****/
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struct rtgenmsg
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{
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unsigned char rtgen_family;
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};
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/*****************************************************************
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* Link layer specific messages.
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****/
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/* struct ifinfomsg
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* passes link level specific information, not dependent
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* on network protocol.
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*/
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struct ifinfomsg
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{
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unsigned char ifi_family;
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unsigned char __ifi_pad;
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unsigned short ifi_type; /* ARPHRD_* */
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int ifi_index; /* Link index */
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unsigned ifi_flags; /* IFF_* flags */
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unsigned ifi_change; /* IFF_* change mask */
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};
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/********************************************************************
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* prefix information
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****/
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struct prefixmsg
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{
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unsigned char prefix_family;
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unsigned char prefix_pad1;
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unsigned short prefix_pad2;
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int prefix_ifindex;
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unsigned char prefix_type;
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unsigned char prefix_len;
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unsigned char prefix_flags;
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unsigned char prefix_pad3;
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};
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enum
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{
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PREFIX_UNSPEC,
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PREFIX_ADDRESS,
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PREFIX_CACHEINFO,
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__PREFIX_MAX
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};
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#define PREFIX_MAX (__PREFIX_MAX - 1)
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struct prefix_cacheinfo
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{
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__u32 preferred_time;
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__u32 valid_time;
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};
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/*****************************************************************
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* Traffic control messages.
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****/
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struct tcmsg
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{
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unsigned char tcm_family;
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unsigned char tcm__pad1;
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unsigned short tcm__pad2;
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int tcm_ifindex;
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__u32 tcm_handle;
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__u32 tcm_parent;
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__u32 tcm_info;
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};
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enum
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{
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TCA_UNSPEC,
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TCA_KIND,
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TCA_OPTIONS,
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TCA_STATS,
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TCA_XSTATS,
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TCA_RATE,
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TCA_FCNT,
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TCA_STATS2,
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TCA_STAB,
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__TCA_MAX
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};
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#define TCA_MAX (__TCA_MAX - 1)
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#define TCA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg))))
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#define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg))
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/********************************************************************
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* Neighbor Discovery userland options
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****/
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struct nduseroptmsg
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{
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unsigned char nduseropt_family;
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unsigned char nduseropt_pad1;
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unsigned short nduseropt_opts_len; /* Total length of options */
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int nduseropt_ifindex;
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__u8 nduseropt_icmp_type;
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__u8 nduseropt_icmp_code;
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unsigned short nduseropt_pad2;
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unsigned int nduseropt_pad3;
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/* Followed by one or more ND options */
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};
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enum
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{
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NDUSEROPT_UNSPEC,
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NDUSEROPT_SRCADDR,
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__NDUSEROPT_MAX
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};
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#define NDUSEROPT_MAX (__NDUSEROPT_MAX - 1)
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#ifndef __KERNEL__
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/* RTnetlink multicast groups - backwards compatibility for userspace */
|
|
#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_IPV4_RULE 0x80
|
|
|
|
#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
|
|
#endif
|
|
|
|
/* RTnetlink multicast groups */
|
|
enum rtnetlink_groups {
|
|
RTNLGRP_NONE,
|
|
#define RTNLGRP_NONE RTNLGRP_NONE
|
|
RTNLGRP_LINK,
|
|
#define RTNLGRP_LINK RTNLGRP_LINK
|
|
RTNLGRP_NOTIFY,
|
|
#define RTNLGRP_NOTIFY RTNLGRP_NOTIFY
|
|
RTNLGRP_NEIGH,
|
|
#define RTNLGRP_NEIGH RTNLGRP_NEIGH
|
|
RTNLGRP_TC,
|
|
#define RTNLGRP_TC RTNLGRP_TC
|
|
RTNLGRP_IPV4_IFADDR,
|
|
#define RTNLGRP_IPV4_IFADDR RTNLGRP_IPV4_IFADDR
|
|
RTNLGRP_IPV4_MROUTE,
|
|
#define RTNLGRP_IPV4_MROUTE RTNLGRP_IPV4_MROUTE
|
|
RTNLGRP_IPV4_ROUTE,
|
|
#define RTNLGRP_IPV4_ROUTE RTNLGRP_IPV4_ROUTE
|
|
RTNLGRP_IPV4_RULE,
|
|
#define RTNLGRP_IPV4_RULE RTNLGRP_IPV4_RULE
|
|
RTNLGRP_IPV6_IFADDR,
|
|
#define RTNLGRP_IPV6_IFADDR RTNLGRP_IPV6_IFADDR
|
|
RTNLGRP_IPV6_MROUTE,
|
|
#define RTNLGRP_IPV6_MROUTE RTNLGRP_IPV6_MROUTE
|
|
RTNLGRP_IPV6_ROUTE,
|
|
#define RTNLGRP_IPV6_ROUTE RTNLGRP_IPV6_ROUTE
|
|
RTNLGRP_IPV6_IFINFO,
|
|
#define RTNLGRP_IPV6_IFINFO RTNLGRP_IPV6_IFINFO
|
|
RTNLGRP_DECnet_IFADDR,
|
|
#define RTNLGRP_DECnet_IFADDR RTNLGRP_DECnet_IFADDR
|
|
RTNLGRP_NOP2,
|
|
RTNLGRP_DECnet_ROUTE,
|
|
#define RTNLGRP_DECnet_ROUTE RTNLGRP_DECnet_ROUTE
|
|
RTNLGRP_DECnet_RULE,
|
|
#define RTNLGRP_DECnet_RULE RTNLGRP_DECnet_RULE
|
|
RTNLGRP_NOP4,
|
|
RTNLGRP_IPV6_PREFIX,
|
|
#define RTNLGRP_IPV6_PREFIX RTNLGRP_IPV6_PREFIX
|
|
RTNLGRP_IPV6_RULE,
|
|
#define RTNLGRP_IPV6_RULE RTNLGRP_IPV6_RULE
|
|
RTNLGRP_ND_USEROPT,
|
|
#define RTNLGRP_ND_USEROPT RTNLGRP_ND_USEROPT
|
|
__RTNLGRP_MAX
|
|
};
|
|
#define RTNLGRP_MAX (__RTNLGRP_MAX - 1)
|
|
|
|
/* 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/mutex.h>
|
|
|
|
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 rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo);
|
|
extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid);
|
|
extern int rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group,
|
|
struct nlmsghdr *nlh, gfp_t flags);
|
|
extern void rtnl_set_sk_err(struct net *net, u32 group, int error);
|
|
extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics);
|
|
extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst,
|
|
u32 id, u32 ts, u32 tsage, long expires,
|
|
u32 error);
|
|
|
|
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_APPEND(skb, attrlen, data) \
|
|
({ if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \
|
|
goto rtattr_failure; \
|
|
memcpy(skb_put(skb, attrlen), data, attrlen); })
|
|
|
|
#define RTA_PUT_NOHDR(skb, attrlen, data) \
|
|
({ RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \
|
|
memset(skb_tail_pointer(skb) - (RTA_ALIGN(attrlen) - attrlen), 0, \
|
|
RTA_ALIGN(attrlen) - attrlen); })
|
|
|
|
#define RTA_PUT_U8(skb, attrtype, value) \
|
|
({ u8 _tmp = (value); \
|
|
RTA_PUT(skb, attrtype, sizeof(u8), &_tmp); })
|
|
|
|
#define RTA_PUT_U16(skb, attrtype, value) \
|
|
({ u16 _tmp = (value); \
|
|
RTA_PUT(skb, attrtype, sizeof(u16), &_tmp); })
|
|
|
|
#define RTA_PUT_U32(skb, attrtype, value) \
|
|
({ u32 _tmp = (value); \
|
|
RTA_PUT(skb, attrtype, sizeof(u32), &_tmp); })
|
|
|
|
#define RTA_PUT_U64(skb, attrtype, value) \
|
|
({ u64 _tmp = (value); \
|
|
RTA_PUT(skb, attrtype, sizeof(u64), &_tmp); })
|
|
|
|
#define RTA_PUT_SECS(skb, attrtype, value) \
|
|
RTA_PUT_U64(skb, attrtype, (value) / HZ)
|
|
|
|
#define RTA_PUT_MSECS(skb, attrtype, value) \
|
|
RTA_PUT_U64(skb, attrtype, jiffies_to_msecs(value))
|
|
|
|
#define RTA_PUT_STRING(skb, attrtype, value) \
|
|
RTA_PUT(skb, attrtype, strlen(value) + 1, value)
|
|
|
|
#define RTA_PUT_FLAG(skb, attrtype) \
|
|
RTA_PUT(skb, attrtype, 0, NULL);
|
|
|
|
#define RTA_NEST(skb, type) \
|
|
({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
|
|
RTA_PUT(skb, type, 0, NULL); \
|
|
__start; })
|
|
|
|
#define RTA_NEST_END(skb, start) \
|
|
({ (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
|
|
(skb)->len; })
|
|
|
|
#define RTA_NEST_COMPAT(skb, type, attrlen, data) \
|
|
({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
|
|
RTA_PUT(skb, type, attrlen, data); \
|
|
RTA_NEST(skb, type); \
|
|
__start; })
|
|
|
|
#define RTA_NEST_COMPAT_END(skb, start) \
|
|
({ struct rtattr *__nest = (void *)(start) + NLMSG_ALIGN((start)->rta_len); \
|
|
(start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
|
|
RTA_NEST_END(skb, __nest); \
|
|
(skb)->len; })
|
|
|
|
#define RTA_NEST_CANCEL(skb, start) \
|
|
({ if (start) \
|
|
skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
|
|
-1; })
|
|
|
|
#define RTA_GET_U8(rta) \
|
|
({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u8)) \
|
|
goto rtattr_failure; \
|
|
*(u8 *) RTA_DATA(rta); })
|
|
|
|
#define RTA_GET_U16(rta) \
|
|
({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u16)) \
|
|
goto rtattr_failure; \
|
|
*(u16 *) RTA_DATA(rta); })
|
|
|
|
#define RTA_GET_U32(rta) \
|
|
({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u32)) \
|
|
goto rtattr_failure; \
|
|
*(u32 *) RTA_DATA(rta); })
|
|
|
|
#define RTA_GET_U64(rta) \
|
|
({ u64 _tmp; \
|
|
if (!rta || RTA_PAYLOAD(rta) < sizeof(u64)) \
|
|
goto rtattr_failure; \
|
|
memcpy(&_tmp, RTA_DATA(rta), sizeof(_tmp)); \
|
|
_tmp; })
|
|
|
|
#define RTA_GET_FLAG(rta) (!!(rta))
|
|
|
|
#define RTA_GET_SECS(rta) ((unsigned long) RTA_GET_U64(rta) * HZ)
|
|
#define RTA_GET_MSECS(rta) (msecs_to_jiffies((unsigned long) RTA_GET_U64(rta)))
|
|
|
|
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;
|
|
memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - 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);
|
|
|
|
/* RTNL is used as a global lock for all changes to network configuration */
|
|
extern void rtnl_lock(void);
|
|
extern void rtnl_unlock(void);
|
|
extern int rtnl_trylock(void);
|
|
extern int rtnl_is_locked(void);
|
|
|
|
extern void rtnetlink_init(void);
|
|
extern void __rtnl_unlock(void);
|
|
|
|
#define ASSERT_RTNL() do { \
|
|
if (unlikely(!rtnl_is_locked())) { \
|
|
printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
|
|
__FILE__, __LINE__); \
|
|
dump_stack(); \
|
|
} \
|
|
} while(0)
|
|
|
|
static inline u32 rtm_get_table(struct rtattr **rta, u8 table)
|
|
{
|
|
return RTA_GET_U32(rta[RTA_TABLE-1]);
|
|
rtattr_failure:
|
|
return table;
|
|
}
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
|
|
#endif /* __LINUX_RTNETLINK_H */
|