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filter.txt: update 'tools/net/' to 'tools/bpf/'

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The tools are located at tootls/bpf/ instead of tools/net/.
Update the filter.txt doc.

Signed-off-by: Wang Sheng-Hui <shhuiw@foxmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Wang Sheng-Hui 2018-04-15 16:07:12 +08:00 committed by David S. Miller
parent d6606bcc6d
commit c246fd333f
1 changed files with 3 additions and 3 deletions
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Documentation/networking/filter.txt
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@ -169,7 +169,7 @@ access to BPF code as well.
BPF engine and instruction set BPF engine and instruction set
------------------------------ ------------------------------
Under tools/net/ there's a small helper tool called bpf_asm which can Under tools/bpf/ there's a small helper tool called bpf_asm which can
be used to write low-level filters for example scenarios mentioned in the be used to write low-level filters for example scenarios mentioned in the
previous section. Asm-like syntax mentioned here has been implemented in previous section. Asm-like syntax mentioned here has been implemented in
bpf_asm and will be used for further explanations (instead of dealing with bpf_asm and will be used for further explanations (instead of dealing with
@ -359,7 +359,7 @@ $ ./bpf_asm -c foo
In particular, as usage with xt_bpf or cls_bpf can result in more complex BPF In particular, as usage with xt_bpf or cls_bpf can result in more complex BPF
filters that might not be obvious at first, it's good to test filters before filters that might not be obvious at first, it's good to test filters before
attaching to a live system. For that purpose, there's a small tool called attaching to a live system. For that purpose, there's a small tool called
bpf_dbg under tools/net/ in the kernel source directory. This debugger allows bpf_dbg under tools/bpf/ in the kernel source directory. This debugger allows
for testing BPF filters against given pcap files, single stepping through the for testing BPF filters against given pcap files, single stepping through the
BPF code on the pcap's packets and to do BPF machine register dumps. BPF code on the pcap's packets and to do BPF machine register dumps.
@ -483,7 +483,7 @@ Example output from dmesg:
[ 3389.935851] JIT code: 00000030: 00 e8 28 94 ff e0 83 f8 01 75 07 b8 ff ff 00 00 [ 3389.935851] JIT code: 00000030: 00 e8 28 94 ff e0 83 f8 01 75 07 b8 ff ff 00 00
[ 3389.935852] JIT code: 00000040: eb 02 31 c0 c9 c3 [ 3389.935852] JIT code: 00000040: eb 02 31 c0 c9 c3
In the kernel source tree under tools/net/, there's bpf_jit_disasm for In the kernel source tree under tools/bpf/, there's bpf_jit_disasm for
generating disassembly out of the kernel log's hexdump: generating disassembly out of the kernel log's hexdump:
# ./bpf_jit_disasm # ./bpf_jit_disasm