This adds support for slightly less output than is normally provided by
'ip link show' and 'ip addr show'. This is a bit better when you have a
host with lots of interfaces. Sample output:
$ ip -br link show
lo UNKNOWN 00:00:00:00:00:00 <LOOPBACK,UP,LOWER_UP>
p2p1 UP 08:00:27:ee:0b:3b <BROADCAST,MULTICAST,UP,LOWER_UP>
p7p1 UP 08:00:27:9d:62:9f <BROADCAST,MULTICAST,UP,LOWER_UP>
p8p1 DOWN 08:00:27:dc:d8:ca <NO-CARRIER,BROADCAST,MULTICAST,UP>
p9p1 UP 08:00:27:76:d9:75 <BROADCAST,MULTICAST,UP,LOWER_UP>
p7p1.100@p7p1 UP 08:00:27:9d:62:9f <BROADCAST,MULTICAST,UP,LOWER_UP>
$ ip -br -4 addr show
lo UNKNOWN 127.0.0.1/8
p2p1 UP 192.168.56.2/24
p7p1 UP 70.0.0.1/24
p8p1 DOWN 80.0.0.1/24
p9p1 UP 10.0.5.15/24
p7p1.100@p7p1 UP 200.0.0.1/24
$ ip -br -6 addr show
lo UNKNOWN ::1/128
p2p1 UP fe80::a00:27ff:feee:b3b/64
p7p1 UP 7000::1/8 fe80::a00:27ff:fe9d:629f/64
p8p1 DOWN 8000::1/8
p9p1 UP fe80::a00:27ff:fe76:d975/64
p7p1.100@p7p1 UP fe80::a00:27ff:fe9d:629f/64
$ ip -br addr show p7p1
p7p1 UP 70.0.0.1/24 7000::1/8 fe80::a00:27ff:fe9d:629f/64
v2: Now with color support!
v3: Better field width estimation (except netdev names to keep output at a
decent width) and whitespace fixup.
Signed-off-by: Andy Gospodarek <gospo@cumulusnetworks.com>
There have been several instances where response from kernel
has overrun the stack buffer from the caller. Avoid future problems
by passing a size argument.
Also drop the unused peer and group arguments to rtnl_talk.
With this patch, it's now possible to listen in all netns that have an nsid
assigned into the netns where the socket is opened.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
It is hard to quickly find what you are looking for in the output of the
ip command. Color helps.
This patch adds a '-c' flag to highlight these with individual colors:
- interface name
- ip address
- mac address
- up/down state
Signed-off-by: Mathias Nyman <m.nyman@iki.fi>
Tested-by: Yegor Yefremov <yegorslists@googlemail.com>
The warning was:
In file included from namespace.c:14:0:
../include/namespace.h: In function ‘setns’:
../include/namespace.h:37:2: warning: implicit declaration of function ‘syscall’ [-Wimplicit-function-declaration]
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Two commands are added:
- ip netns list-id
- ip monitor nsid
A cache is also added to remember the association between the iproute2 netns
name (from /var/run/netns/) and the nsid.
To avoid interfering with the rth socket, a new rtnl socket (rtnsh) is used to
get nsid (we may send rtnl request during listing on rth).
Example:
$ ip netns list-id
nsid 0 (iproute2 netns name: foo)
$ ip monitor nsid
Deleted nsid 0 (iproute2 netns name: foo)
nsid 16 (iproute2 netns name: bar)
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
This work finalizes both eBPF front-ends for the classifier and action
part in tc, it allows for custom ELF section selection, a simplified tc
command frontend (while keeping compat), reusing of common maps between
classifier and actions residing in the same object file, and exporting
of all map fds to an eBPF agent for handing off further control in user
space.
It also adds an extensive example of how eBPF can be used, and a minimal
self-contained example agent that dumps map data. The example is well
documented and hopefully provides a good starting point into programming
cls_bpf and act_bpf.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
If '-nm' specified that do not fail if there is no
default class names file in /etc/iproute2.
Changed default class name file cls_names -> tc_cls.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
- Pull in the uapi mpls.h
- Update rtnetlink.h to include the mpls rtnetlink notification multicast group.
- Define AF_MPLS in utils.h if it is not defined from elsewhere
as is done with AF_DECnet
The address syntax for multiple mpls labels is a complete invention.
When I looked there seemed to be no wide spread convention for talking
about an mpls label stack in text for. Sometimes people did:
"{ Label1, Label2, Label3 }", sometimes people would do:
"[ label3, label2, label1 ]", and most of the time label
stacks were not explicitly shown at all.
The syntax I wound up using, so it would not have spaces and so it
would visually distinct from other kinds of addresses is.
label1/label2/label3 Where label1 is the label at the top of the label
stack and label3 is the label at the bottom on the label stack.
When there is a single label this matches what seems to be convention
with other tools. Just print out the numeric value of the mpls label.
The netlink protocol for labels uses the on the wire format for a
label stack. The ttl and traffic class are expected to be 0. Using
the on the wire format is common and what happens with other address
types. BGP when passing label stacks also uses this technique with the
exception that the ttl byte is not included making each label in a BGP
label stack 3 bytes instead of 4.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Add support for the RTA_VIA attribute that specifies an address family
as well as an address for the next hop gateway.
To make it easy to pass this reorder inet_prefix so that it's tail
is a proper RTA_VIA attribute.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Add the functions family_name and read_family to convert an address
family to a string and to convernt a string to an address family.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
For some address families (like AF_PACKET) it is helpful to have the
length when prenting the address.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This work adds the tc frontend for kernel commit e2e9b6541dd4 ("cls_bpf:
add initial eBPF support for programmable classifiers").
A C-like classifier program (f.e. see e2e9b6541dd4) is being compiled via
LLVM's eBPF backend into an ELF file, that is then being passed to tc. tc
then loads, if any, eBPF maps and eBPF opcodes (with fixed-up eBPF map file
descriptors) out of its dedicated sections, and via bpf(2) into the kernel
and then the resulting fd via netlink down to cls_bpf. cls_bpf allows for
annotations, currently, I've used the file name for that, so that the user
can easily identify his filter when dumping configurations back.
Example usage:
clang -O2 -emit-llvm -c cls.c -o - | llc -march=bpf -filetype=obj -o cls.o
tc filter add dev em1 parent 1: bpf run object-file cls.o classid x:y
tc filter show dev em1 [...]
filter parent 1: protocol all pref 49152 bpf handle 0x1 flowid x:y cls.o
I placed the parser bits derived from Alexei's kernel sample, into tc_bpf.c
as my next step is to also add the same support for BPF action, so we can
have a fully fledged eBPF classifier and action in tc.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
The kernel now provides ids for peer netns. This patch implements a new command
'set' to assign an id.
When netns are listed, if an id is assigned, it is now displayed.
Example:
$ ip netns add foo
$ ip netns set foo 1
$ ip netns
foo (id: 1)
init_net
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
This change allows to exec some cmd on each
named netns (except default) by specifying '-all' option:
# ip -all netns exec ip link
Each command executes synchronously.
Exit status is not considered, so there might be a case
that some CMD can fail on some netns but success on the other.
EXAMPLES:
1) Show link info on all netns:
$ ip -all netns exec ip link
netns: test_net
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN mode DEFAULT group default
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
4: tap0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 500
link/ether 1a:19:6f:25:eb:85 brd ff:ff:ff:ff:ff:ff
netns: home0
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN mode DEFAULT group default
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
4: tap0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 500
link/ether ea:1a:59:40:d3:29 brd ff:ff:ff:ff:ff:ff
netns: lan0
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN mode DEFAULT group default
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
4: tap0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 500
link/ether ce:49:d5:46:81:ea brd ff:ff:ff:ff:ff:ff
2) Set UP tap0 device for the all netns:
$ ip -all netns exec ip link set dev tap0 up
netns: test_net
netns: home0
netns: lan0
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
When HAVE_SETNS is not set, iproute2 provides a local implementation of this
function based on __NR_setns.
This macro is defined in sys/syscall.h, which was not included, thus the local
implementation always returned -1.
CC: Vadim Kochan <vadim4j@gmail.com>
Fixes: eb67e4498a ("lib: Add netns_switch func for change network namespace")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Warning was:
In file included from bridge.c:16:0:
../include/namespace.h:33:12: warning: ‘setns’ defined but not used [-Wunused-function]
CC: Vadim Kochan <vadim4j@gmail.com>
Fixes: eb67e4498a ("lib: Add netns_switch func for change network namespace")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Sometimes, it is more convenient to get only one specific nested attribute by
type. For example for IFLA_AF_SPEC where type is address family (AF_INET6).
So add this helper for this purpose.
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
New netns_switch func moved to the lib/namespace.c from ip/ipnetns.c
so it can be used from the other tools for fast switching
network namespace.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Added another timestamp format to look like more logging info:
[2014-12-22T22:36:50.489 ] 2: enp0s25: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default
link/ether 3c:97:0e:a3:86:2e brd ff:ff:ff:ff:ff:ff
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Replaced handling netlink messages by rtnl_dump_filter
from lib/libnetlink.c, also:
- removed unused dump_fp arg;
- added MAGIC_SEQ #define for 123456 seq id;
- silently exit if ENOENT errno is caused for NETLINK_SOCK_DIAG proto
in lib/libnetlink.c: rtnl_duml_filter_l(...) function. This fix
was added in a3fd8e58c1 by Eric
for misc/ss.c
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
There were only few Netlink protocol names
which were printed on the screen:
rtnl, fw, tcpdiag
So added the ability to identify Netlink proto name
from /etc/iproute/nl_protos or from static table.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Added 'ip fou...' commands to enable/disable UDP ports for doing
foo-over-udp and Generic UDP Encapsulation variant. Arguments are port
number to bind to and IP protocol to map to port (for direct FOU).
Examples:
ip fou add port 7777 gue
ip fou add port 8888 ipproto 4
The first command creates a GUE port, the second creates a direct FOU
port for IPIP (receive payload is a assumed to be an IPv4 packet).
Signed-off-by: Tom Herbert <therbert@google.com>
The RTM_NEWLINK message accepts ifi_index non-zero value and lets
creation of links with given index (if it's free, or course). This
functionality is available since linux-v3.5.
This patch makes this API available via ip tool.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Use warn_unused_result to enforce checking return value of rtnl_send,
and fix where the errors are.
Suggested by initial patch from Petr Písař <ppisar@redhat.com>
The kernel already supports it, so add the support
to iproute2 as well.
Cc: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
This change adds the interface group to the output of "ip link show".
It also makes "ip link" print _all_ devices if no group filter is specified;
previously, only interfaces of the default group (0) were shown.
Signed-off-by: Stefan Tomanek <stefan.tomanek@wertarbyte.de>
ss -i can output "fastopen" attribute if socket used Fast Open
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Recent kernel patches added support for VLAN filtering on the bridge.
This functionality allows one to turn a basic bridge into a VLAN bridge,
where VLANs dicatate packet forwarding and header transformation.
To configure the VLANs on the bridge and its ports a new command is
added to the 'bridge' utility.
# bridge vlan add dev eth0 vid 10 pvid untagged brdev
# bridge vlan add
# bridge vlan delete dev eth0 vid 10
# bridge vlan show
This command supports the following flags:
master - peform the operation on the software bridge device. This is
the default behavior.
self - perform the operation on the hardware associated with the port.
This flag is required when the device is the bridge device and
the configuration is desired on the bridge device itself (not
one of the ports).
pvid - Set the PVID (port vlan id) for a given port. Any untagged
frames arriving on the port will be assigned to this vlan.
untagged - Sets the egress policy of for a given vlan. Default port
egress policy is tagged. Set this flag if you wish traffic
associated with this VLAN to exit the port untagged.
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Commit (5a650703d4 Makefile: make warnings into
errors ) causes the following build error.
gcc -Wall -Wstrict-prototypes -Werror -Wmissing-prototypes
-Wmissing-declarations -Wold-style-definition -O2 -I../include
-DRESOLVE_HOSTNAMES -DLIBDIR=\"/usr/lib\" -DCONFDIR=\"/etc/iproute2\"
-D_GNU_SOURCE -DCONFIG_GACT -DCONFIG_GACT_PROB -DIPT_LIB_DIR=\"/lib/xtables\"
-DYY_NO_INPUT -c -o m_ipt.o m_ipt.c
cc1: warnings being treated as errors
m_ipt.c:72: error: no previous prototype for 'xtables_register_target'
m_ipt.c:361: error: no previous prototype for 'build_st'
make[1]: *** [m_ipt.o] Error 1
This is fixed by adding the prototype in the header include/iptables.h
I am not sure if this is due to something wrong on my build system but I am
using current glibc 2.17.
Signed-off-by: Vijay Subramanian <subramanian.vijay@gmail.com>
