Kernel gained support for filtering link dumps with commit dc599f76c22b
("net: Add support for filtering link dump by master device and kind").
Add support to ip link command. If a user passes master device or
kind to ip link command they are added to the link dump request message.
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Since we can only configure unicast, we probably want to be able to
display unicast, rather than multicast.
Fixes: 906ac5437a ("geneve: add support for IPv6 link partners")
Signed-off-by: Edward Cree <ecree@solarflare.com>
Display only attributes that are relevant when a GRE interface is in
'external' mode instead of the default values (which are ignored by the
kernel even if passed back).
Fixes: 926b39e1fe ("gre: add support for collect metadata flag")
Signed-off-by: Jiri Benc <jbenc@redhat.com>
For GRE interfaces in 'external' mode, the kernel ignores all manual
settings like remote IP address or TTL. However, for some of those
attributes, kernel checks their value and does not allow them to be zero
(even though they're ignored later).
Currently, 'ip link' always includes all attributes in the netlink message.
This leads to problem with creating interfaces in 'external' mode. For
example, this command does not work:
ip link add gre1 type gretap external
and needs a bogus remote IP address to be specified, as the kernel enforces
remote IP address to be either not present, or not null.
Ignore the parameters that do not make sense in 'external' mode.
Unfortunately, we cannot error out, as there may be existing deployments
that workarounded the bug by specifying bogus values.
Fixes: 926b39e1fe ("gre: add support for collect metadata flag")
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Use the same rtnl_dump_request_n call as the show. The rtnl_wilddump_request
assumes the type uses an ifinfomsg which is not the case for the neighbor
table.
Signed-off-by: Jeff Harris <jefftharris@gmail.com>
Acked-by: David Ahern <dsa@cumulusnetworks.com>
Follow-up for kernel commit 8eb3b99554b8 ("geneve: support setting
IPv6 flow label") to allow setting the label for the device config.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Follow-up for kernel commit e7f70af111f0 ("vxlan: support setting
IPv6 flow label") to allow setting the label for the device config.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Enable support for configuring outer UDP checksums on Geneve tunnels:
ip link add type geneve id 10 remote 10.0.0.2 udpcsum
Signed-off-by: Jesse Gross <jesse@kernel.org>
On recent kernels, UDP checksum computation has become more efficient and
the default behavior was changed, however, the ip command overrides this
by always specifying a particular behavior.
If the user does not specify that UDP checksums should either be computed
or not then we don't need to send an explicit netlink message - the kernel
can just use its default behavior.
Signed-off-by: Jesse Gross <jesse@kernel.org>
There is only a single user who needs it to be reentrant (not really,
but it's safer like this), add rt_addr_n2a_r() for it to use.
Signed-off-by: Phil Sutter <phil@nwl.cc>
There are only three users which require it to be reentrant, the rest is
fine without. Instead, provide a reentrant format_host_r() for users
which need it.
Signed-off-by: Phil Sutter <phil@nwl.cc>
This adds two helper functions which map a given data field to a color,
so color_fprintf() statements don't have to be duplicated with only a
different color value depending on that data field's value. In order for
this to work in a generic way, COLOR_CLEAR has been added to serve as a
fallback default of uncolored output.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Add support for ignore route attribute, and refine the code to use
rta_getattr_* function to get attribute value.
Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
To not make the output overly confusing, list them in a definition of
the STATE placeholder which is already used in the show/flush syntax but
wasn't explained before.
Signed-off-by: Phil Sutter <phil@nwl.cc>
This is a bit pedantic, but brackets ([]) show optional values and since
TYPE must not become empty, they're not suited to surround the type
keyword choices. Use curly braces instead.
Also add some missing whitespace to the parameter list above.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Neither 'list' nor 'flush' actions accept parameters, and with given
prefix the action keyword is not optional anymore.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Although the ip command accepts both "neighbor" and "neighbour" as
subcommand, I assume it's sufficient to list it in help text as just
"neigh" like ip.8 does.
Signed-off-by: Phil Sutter <phil@nwl.cc>
The help text was misleading: One could think it is possible to list
rules by selector, which would be nice but isn't. This change also
clarifies that 'ip rule' defaults to 'list' if no further arguments are
given.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Add IFLA_VF_TRUST message to trust the VF.
PF can accept some privileged operation from the trusted VF.
For example, ixgbe PF doesn't allow to enable VF promiscuous mode until
the VF is trusted because it may hurt performance.
To trust VF.
# ip link set dev eth0 vf 1 trust on
To untrust VF.
# ip link set dev eth0 vf 1 trust off
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Add support to be able to view and change IFLA_BRPORT_MULTICAST_ROUTER port
attribute.
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Export all the read-only values that get returned about a bridge port
such as the timers, the ids, designated_port and cost,
topology_change_ack and config_pending. For the bridge ids the
br_dump_bridge_id function is exported from iplink_bridge.
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
netns_map_add() does a malloc of (sizeof (struct nsid_cache) +
strlen(name)) and then proceed with strcpy() of name into the
zero-length member at the end of the nsid_cache structure. The
nul-terminator is written outside of the allocated memory and may
overwrite the allocator's internal structure.
This can trigger a segmentation fault on i386 uclibc with names of size 8:
after the corruption occurs, the call to closedir() on netns_map_init()
crashes while freeing the DIR structure.
Here is the relevant valgrind output:
==1251== Memcheck, a memory error detector
==1251== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
==1251== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright
info
==1251== Command: ./ip netns
==1251==
==1251== Invalid write of size 1
==1251== at 0x4011975: strcpy (in
/usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==1251== by 0x8058B00: netns_map_add (ipnetns.c:181)
==1251== by 0x8058E2A: netns_map_init (ipnetns.c:226)
==1251== by 0x8058E79: do_netns (ipnetns.c:776)
==1251== by 0x804D9FF: do_cmd (ip.c:110)
==1251== by 0x804D814: main (ip.c:300)
Support for the new rx_nohandler statistic.
This code is designed to handle the case where the kernel reported statistic
structure is smaller than the larger structure in later releases (and vice versa).
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
David Ahern
Edward Cree
Jiri Benc
Jeff Harris
Stephen Hemminger
Phil Sutter
Nicolas Dichtel
Eric Dumazet
Daniel Borkmann
Jiri Pirko
Jesse Gross
Zhang Shengju
Hiroshi Shimamoto
Nikolay Aleksandrov
Nicolas Cavallari