linux-toradex.git/include/net/ndisc.h, branch v4.12

ipv6: add support for NETDEV_RESEND_IGMP event

2017-03-29T05:02:21+00:00

This patch adds support for NETDEV_RESEND_IGMP event similar
to how it works for IPv4.

Signed-off-by: Vladislav Yasevich 
Signed-off-by: David S. Miller

net: add confirm_neigh method to dst_ops

2017-02-07T18:07:46+00:00

Add confirm_neigh method to dst_ops and use it from IPv4 and IPv6
to lookup and confirm the neighbour. Its usage via the new helper
dst_confirm_neigh() should be restricted to MSG_PROBE users for
performance reasons.

For XFRM prefer the last tunnel address, if present. With help
from Steffen Klassert.

Signed-off-by: Julian Anastasov 
Acked-by: Steffen Klassert 
Signed-off-by: David S. Miller

ipv6 addrconf: Implemented enhanced DAD (RFC7527)

2016-12-04T04:21:37+00:00

Implemented RFC7527 Enhanced DAD.
IPv6 duplicate address detection can fail if there is some temporary
loopback of Ethernet frames. RFC7527 solves this by including a random
nonce in the NS messages used for DAD, and if an NS is received with the
same nonce it is assumed to be a looped back DAD probe and is ignored.
RFC7527 is enabled by default. Can be disabled by setting both of
conf/{all,interface}/enhanced_dad to zero.

Signed-off-by: Erik Nordmark 
Signed-off-by: Bob Gilligan 
Reviewed-by: Hannes Frederic Sowa 
Signed-off-by: David S. Miller

6lowpan: introduce 6lowpan-nd

2016-06-16T03:41:23+00:00

This patch introduce different 6lowpan handling for receive and transmit
NS/NA messages for the ipv6 neighbour discovery. The first use-case is
for supporting 802.15.4 short addresses inside the option fields and
handling for RFC6775 6CO option field as userspace option.

Cc: David S. Miller 
Cc: Alexey Kuznetsov 
Cc: James Morris 
Cc: Hideaki YOSHIFUJI 
Cc: Patrick McHardy 
Reviewed-by: Stefan Schmidt 
Acked-by: YOSHIFUJI Hideaki 
Signed-off-by: Alexander Aring 
Signed-off-by: David S. Miller

ipv6: export several functions

2016-06-16T03:41:23+00:00

This patch exports some neighbour discovery functions which can be used
by 6lowpan neighbour discovery ops functionality then.

Cc: David S. Miller 
Cc: Alexey Kuznetsov 
Cc: James Morris 
Cc: Hideaki YOSHIFUJI 
Cc: Patrick McHardy 
Acked-by: YOSHIFUJI Hideaki 
Reviewed-by: Stefan Schmidt 
Signed-off-by: Alexander Aring 
Signed-off-by: David S. Miller

ipv6: introduce neighbour discovery ops

2016-06-16T03:41:23+00:00

This patch introduces neighbour discovery ops callback structure. The
idea is to separate the handling for 6LoWPAN into the 6lowpan module.

These callback offers 6lowpan different handling, such as 802.15.4 short
address handling or RFC6775 (Neighbor Discovery Optimization for IPv6
over 6LoWPANs).

Cc: David S. Miller 
Cc: Alexey Kuznetsov 
Cc: James Morris 
Cc: Hideaki YOSHIFUJI 
Cc: Patrick McHardy 
Acked-by: YOSHIFUJI Hideaki 
Signed-off-by: Alexander Aring 
Signed-off-by: David S. Miller

ndisc: add __ndisc_opt_addr_data function

2016-06-16T03:41:22+00:00

This patch adds __ndisc_opt_addr_data as low-level function for
ndisc_opt_addr_data which doesn't depend on net_device parameter.

Cc: David S. Miller 
Cc: Alexey Kuznetsov 
Cc: James Morris 
Cc: Hideaki YOSHIFUJI 
Cc: Patrick McHardy 
Acked-by: YOSHIFUJI Hideaki 
Reviewed-by: Stefan Schmidt 
Signed-off-by: Alexander Aring 
Signed-off-by: David S. Miller

ndisc: add __ndisc_opt_addr_space function

2016-06-16T03:41:22+00:00

This patch adds __ndisc_opt_addr_space as low-level function for
ndisc_opt_addr_space which doesn't depend on net_device parameter.

Cc: David S. Miller 
Cc: Alexey Kuznetsov 
Cc: James Morris 
Cc: Hideaki YOSHIFUJI 
Cc: Patrick McHardy 
Acked-by: YOSHIFUJI Hideaki 
Reviewed-by: Stefan Schmidt 
Signed-off-by: Alexander Aring 
Signed-off-by: David S. Miller

Revert "ipv6: ndisc: inherit metadata dst when creating ndisc requests"

2015-12-01T20:07:59+00:00

This reverts commit ab450605b35caa768ca33e86db9403229bf42be4.

In IPv6, we cannot inherit the dst of the original dst. ndisc packets
are IPv6 packets and may take another route than the original packet.

This patch breaks the following scenario: a packet comes from eth0 and
is forwarded through vxlan1. The encapsulated packet triggers an NS
which cannot be sent because of the wrong route.

CC: Jiri Benc 
CC: Thomas Graf 
Signed-off-by: Nicolas Dichtel 
Signed-off-by: David S. Miller

ipv6: remove unused neigh parameter from ndisc functions

2015-09-24T19:26:08+00:00

Since commit 12fd84f4383b1 ("ipv6: Remove unused neigh argument for
icmp6_dst_alloc() and its callers."), the neigh parameter of ndisc_send_na
and ndisc_send_ns is unused.

CC: YOSHIFUJI Hideaki 
Signed-off-by: Jiri Benc 
Signed-off-by: David S. Miller