linux-toradex.git/tools/net, branch v4.9.16

tools: bpf_jit_disasm: check for klogctl failure

2016-05-09T03:32:59+00:00

klogctl can fail and return -ve len, so check for this and
return NULL to avoid passing a (size_t)-1 to malloc.

Signed-off-by: Colin Ian King 
Acked-by: Daniel Borkmann 
Signed-off-by: David S. Miller

tools, bpf_asm: simplify parser rule for BPF extensions

2016-02-22T18:29:42+00:00

We can already use yylval in the lexer for encoding the BPF extension
number, so that the parser rules can be further reduced to a single one
for each B/H/W case.

Signed-off-by: Ray Bellis 
Signed-off-by: Daniel Borkmann 
Signed-off-by: David S. Miller

bpf_dbg: do not initialise statics to 0

2016-02-11T09:24:45+00:00

This patch fixes the checkpatch.pl error to bpf_dbg.c:

ERROR: do not initialise statics to 0

Signed-off-by: Wei Tang 
Signed-off-by: David S. Miller

tools/net: Use include/uapi with __EXPORTED_HEADERS__

2015-11-15T22:24:33+00:00

Use the local uapi headers to keep in sync with "recently" added #define's
(e.g. SKF_AD_VLAN_TPID).  Refactored CFLAGS, and bpf_asm doesn't need -I.

Fixes: 3f356385e8a4 ("filter: bpf_asm: add minimal bpf asm tool")
Signed-off-by: Kamal Mostafa 
Acked-by: Daniel Borkmann 
Signed-off-by: David S. Miller

tools: bpf_jit_disasm: make get_last_jit_image return unsigned

2015-09-29T05:18:01+00:00

The function returns always non-negative values.

The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/assign_signed_to_unsigned.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2046107

Signed-off-by: Andrzej Hajda 
Signed-off-by: David S. Miller

bpf_jit_disasm: also support reading jit dump from file

2015-07-31T22:13:14+00:00

This patch adds support to read the dmesg BPF JIT dump also from a
file instead of the klog buffer. I found this quite useful when going
through some 'before/after patch' logs. It also fixes a regex leak
found by valgrind when no image dump was found.

Signed-off-by: Daniel Borkmann 
Signed-off-by: David S. Miller

tools: bpf_jit_disasm: fix segfault on disabled debugging log output

2015-05-27T04:24:10+00:00

With recent debugging, I noticed that bpf_jit_disasm segfaults when
there's no debugging output from the JIT compiler to the kernel log.

Reason is that when regexec(3) doesn't match on anything, start/end
offsets are not being filled out and contain some uninitialized garbage
from stack. Thus, we need zero out offsets first.

Signed-off-by: Daniel Borkmann 
Signed-off-by: David S. Miller

tools: bpf_asm: cleanup vlan extension related token

2015-03-25T01:21:41+00:00

We now have K_VLANT, K_VLANP and K_VLANTPID. Clean them up into more
descriptive token, namely K_VLAN_TCI, K_VLAN_AVAIL and K_VLAN_TPID.

Signed-off-by: Daniel Borkmann 
Signed-off-by: David S. Miller

filter: introduce SKF_AD_VLAN_TPID BPF extension

2015-03-24T19:25:15+00:00

If vlan offloading takes place then vlan header is removed from frame
and its contents, both vlan_tci and vlan_proto, is available to user
space via TPACKET interface. However, only vlan_tci can be used in BPF
filters.

This commit introduces a new BPF extension. It makes possible to load
the value of vlan_proto (vlan TPID) to register A. Support for classic
BPF and eBPF is being added, analogous to skb->protocol.

Cc: Daniel Borkmann 
Cc: Alexei Starovoitov 
Cc: Jiri Pirko 

Signed-off-by: Michal Sekletar 
Acked-by: Daniel Borkmann 
Acked-by: Alexei Starovoitov 
Reviewed-by: Jiri Pirko 
Signed-off-by: David S. Miller

tools: bpf_jit_disasm: increase image buffer size

2014-05-16T20:44:08+00:00

JITed seccomp filters can be quite large if they check a lot of syscalls
Simply increase buffer size

Signed-off-by: Alexei Starovoitov 
Acked-by: Daniel Borkmann 
Signed-off-by: David S. Miller