Kernel commit 04fd61ab36ec ("bpf: allow bpf programs to tail-call other
bpf programs") added support for tail calls, this patch here adds tc
front end parts for the object parser to prepopulate a given eBPF prog
array before the root prog is pushed down for classifier creation. The
prepopulation works with any number of prog arrays in any dependencies,
e.g. prog or normal maps could also be used from progs that are
tail-called themself, etc.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

Don't echo "-e" when using builtin echo in bash.

Merge branch 'net-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shemminger/iproute2 into net-next

Added possibility to check command output by grep from the testing
script.

Now TMP_OUT & TMP_ERR are passed from Makefile and changed to
STD_ERR & STD_OUT.

Also changed some existing tests to make output testing.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

The for loop should only probe up to G[i]bit rates, so that we
end up with T[i]bit as the last max units[] slot for snprintf(3),
and not possibly an invalid pointer in case rate is multiple of
kilo.

Fixes: 8cecdc28 ("tc: more user friendly rates")
Reported-by: Jose R. Guzman Mosqueda <jose.r.guzman.mosqueda@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

ss currently dumps IPv4 sockets, then IPv6 sockets from the kernel,
even if -4 or -6 option was given. Filtering in user space then has to
drop all sockets of wrong family. Such a waste of time...

Before :

$ time ss -tn -4 | wc -l
251659

real	0m1.241s
user	0m0.423s
sys	0m0.806s

After:

$ time ss -tn -4 | wc -l
251672

real	0m0.779s
user	0m0.412s
sys	0m0.386s
Signed-off-by: Eric Dumazet <edumazet@google.com>

Lets implement a full cache with proper hash table, memory got cheaper
these days.

Before :

$ time ss -t | wc -l
529678

real	0m22.708s
user	0m19.591s
sys	0m2.969s

After :

$ time ss -t | wc -l
528291

real	0m5.078s
user	0m4.099s
sys	0m0.985s
Signed-off-by: Eric Dumazet <edumazet@google.com>

On Fri, 2015-05-29 at 13:30 +0300, Vadim Kochan wrote:
> From: Vadim Kochan <vadim4j@gmail.com>
>
> Use strdup instead of malloc, and get rid of bad strcpy.
>
> Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
> ---
>  misc/ss.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/misc/ss.c b/misc/ss.c
> index 347e3a1..a719466 100644
> --- a/misc/ss.c
> +++ b/misc/ss.c
> @@ -1908,8 +1908,7 @@ static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
>
>  		if (tb[INET_DIAG_CONG]) {
>  			const char *cong_attr = rta_getattr_str(tb[INET_DIAG_CONG]);
> -			s.cong_alg = malloc(strlen(cong_attr + 1));
> -			strcpy(s.cong_alg, cong_attr);
> +			s.cong_alg = strdup(cong_attr);
>  		}
>
>  		if (TCPI_HAS_OPT(info, TCPI_OPT_WSCALE)) {

I doubt TCP_CA_NAME_MAX will ever change in the kernel : 16 bytes.

Its typically "cubic" and less than 8 bytes.

Using 8 bytes to point to a malloc(8) is a waste.

Please remove the memory allocation, or store the pointer, since
tcp_show_info() does the malloc()/free() before return.

Indicate existence of libmnl which is required by tipc.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

Make sure we use 64-bit filesystem functions everywhere.  This applies not
only to being able to read large files (which generally doesn't apply to
us), but also being able to simply stat them (as they might be using large
inodes).
Signed-off-by: Mike Frysinger <vapier@chromium.org>

Upstream changes removed some kernel only stuff from header file.

Conflicts:
	include/linux/tcp.h
	lib/libnetlink.c

The definition of offload flag changed during 4.1 rc process.

Pull in some changes like RTN_F_EXTERNAL

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.

Now it matches the size for the answer defined in rtnl_talk()
and prevents stack corruption with answer > 1024 bytes.

Allow the qdisc limit to be set, which is particularly useful when
the default VQ is not configured with RED parameters.
Signed-off-by: David Ward <david.ward@ll.mit.edu>

With this patch, it's now possible to listen in all netns that have an nsid
assigned into the netns where is socket is opened.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>

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>

The goal of this patch is to avoid code duplication.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>

There is no functional change with this commit. It only prepares the next one.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>

Add label option.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>

This adds support for setting and displaying the following bonding
options:
* ad_user_port_key
* ad_actor_sys_prio
* ad_actor_system
Signed-off-by: Jonathan Toppins <jtoppins@cumulusnetworks.com>

codel & fq_codel packet schedulers are now able to have a threshold
for CE marking packets, regardless of the drop/nodrop decision taken by
CoDel.

This is particularly useful for dctcp and variants, that do not use
traditional ECN.

Note that fq_codel users would have to specify noecn if ce_threshold is
used, otherwise results would be not very interesting, as ecn is default
on for fq_codel.

$ tc -s qdisc show dev eth1
qdisc codel 8002: root refcnt 45 limit 1000p target 5.0ms ce_threshold
1.0ms interval 100.0ms
 Sent 4908469888317 bytes 3351813967 pkt (dropped 0, overlimits 0
requeues 21624365)
 rate 37671Mbit 3231836pps backlog 4904740b 250p requeues 21624365
  count 0 lastcount 0 ldelay 1.1ms drop_next 0us
  maxpacket 68130 ecn_mark 0 drop_overlimit 0 ce_mark 410861803
Signed-off-by: Eric Dumazet <edumazet@google.com>

Signed-off-by: Jiri Pirko <jiri@resnulli.us>

tcp_info has 2 new fields : bytes_acked & bytes_received

$ ss -ti src :22
...
	 cubic wscale:7,6 rto:234 rtt:33.199/17.225 ato:17.225 mss:1418 cwnd:9
ssthresh:9 send 3.1Mbps lastsnd:3 lastrcv:4 lastack:193
bytes_acked:188396 bytes_received:13639 pacing_rate 6.2Mbps unacked:1
retrans:0/4 reordering:4 rcv_rtt:47.25 rcv_space:28960
Signed-off-by: Eric Dumazet <edumazet@google.com>

Signed-off-by: John W. Linville <linville@tuxdriver.com>

Get latest files

Print such info like version, tx/rx ring, fanout for
packet sockets when '-e' option was specified.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

Changed to forcely running each test in network
namespace to do not affect on current network setup.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

tipc is a user-space configuration tool for TIPC (Transparent
Inter-process Communication). It utilizes the TIPC netlink API in the
kernel to fetch data or perform actions.

The tipc tool has somewhat similar syntax to the ip tool meaning that
users of the ip tool should not feel that unfamiliar with this tool.
Signed-off-by: Richard Alpe <richard.alpe@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>

Also add tipc_netlink.h for later TIPC support

In the GRED kernel source code, both of the terms "drop parameters"
(DP) and "virtual queue" (VQ) are used to refer to the same thing.
Each "DP" is better understood as a "set of drop parameters", since
it has values for limit, min, max, avpkt, etc. This terminology can
result in confusion when creating a GRED qdisc having multiple DPs.
Netlink attributes and struct members with the DP name seem to have
been left intact for compatibility, while the term VQ was otherwise
adopted in the code, which is more intuitive.

Use the VQ term in the tc command syntax and output (but maintain
compatibility with the old syntax).

Rewrite the usage text to be concise and similar to other qdiscs.
Signed-off-by: David Ward <david.ward@ll.mit.edu>

DPs, def_DP, and DP are unsigned values that are sent and received
in TCA_GRED_* netlink attributes; handle them properly when they
are parsed or printed. Use MAX_DPs as the initial value for def_DP
and DP, and fix the operator used for bounds checking them.
Signed-off-by: David Ward <david.ward@ll.mit.edu>

Make the output more consistent with the RED qdisc, and only show
details/statistics if the appropriate flag is set when calling tc.

Show the parameters used with "gred setup". Add missing statistics
"pdrop" and "other". Fix format specifiers for unsigned values.
Signed-off-by: David Ward <david.ward@ll.mit.edu>

This is more helpful to the user, since the command takes two forms,
and the message that would otherwise appear about missing parameters
assumes one of those forms.
Signed-off-by: David Ward <david.ward@ll.mit.edu>

Signed-off-by: David Ward <david.ward@ll.mit.edu>