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fe40079995
IPv6 routes currently lack nexthop flags as in IPv4. This has several
implications.
In the forwarding path, it requires us to check the carrier state of the
nexthop device and potentially ignore a linkdown route, instead of
checking for RTNH_F_LINKDOWN.
It also requires capable drivers to use the user facing IPv6-specific
route flags to provide offload indication, instead of using the nexthop
flags as in IPv4.
Add nexthop flags to IPv6 routes in the 40 bytes hole and use it to
provide offload indication instead of the RTF_OFFLOAD flag, which is
removed while it's still not part of any official kernel release.
In the near future we would like to use the field for the
RTNH_F_{LINKDOWN,DEAD} flags, but this change is more involved and might
not be ready in time for the current cycle.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
/*
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* Linux INET6 implementation
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*
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* Authors:
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* Pedro Roque <roque@di.fc.ul.pt>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _UAPI_LINUX_IPV6_ROUTE_H
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#define _UAPI_LINUX_IPV6_ROUTE_H
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#include <linux/types.h>
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#include <linux/in6.h> /* For struct in6_addr. */
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#define RTF_DEFAULT 0x00010000 /* default - learned via ND */
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#define RTF_ALLONLINK 0x00020000 /* (deprecated and will be removed)
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fallback, no routers on link */
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#define RTF_ADDRCONF 0x00040000 /* addrconf route - RA */
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#define RTF_PREFIX_RT 0x00080000 /* A prefix only route - RA */
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#define RTF_ANYCAST 0x00100000 /* Anycast */
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#define RTF_NONEXTHOP 0x00200000 /* route with no nexthop */
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#define RTF_EXPIRES 0x00400000
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#define RTF_ROUTEINFO 0x00800000 /* route information - RA */
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#define RTF_CACHE 0x01000000 /* cache entry */
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#define RTF_FLOW 0x02000000 /* flow significant route */
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#define RTF_POLICY 0x04000000 /* policy route */
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#define RTF_PREF(pref) ((pref) << 27)
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#define RTF_PREF_MASK 0x18000000
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#define RTF_PCPU 0x40000000 /* read-only: can not be set by user */
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#define RTF_LOCAL 0x80000000
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struct in6_rtmsg {
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struct in6_addr rtmsg_dst;
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struct in6_addr rtmsg_src;
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struct in6_addr rtmsg_gateway;
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__u32 rtmsg_type;
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__u16 rtmsg_dst_len;
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__u16 rtmsg_src_len;
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__u32 rtmsg_metric;
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unsigned long rtmsg_info;
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__u32 rtmsg_flags;
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int rtmsg_ifindex;
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};
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#define RTMSG_NEWDEVICE 0x11
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#define RTMSG_DELDEVICE 0x12
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#define RTMSG_NEWROUTE 0x21
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#define RTMSG_DELROUTE 0x22
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#define IP6_RT_PRIO_USER 1024
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#define IP6_RT_PRIO_ADDRCONF 256
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#endif /* _UAPI_LINUX_IPV6_ROUTE_H */
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