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selftests/bpf: Fix compiling flow_dissector.c with musl-libc

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[ Upstream commit 5e4c43bcb85973243d7274e0058b6e8f5810e4f7 ]

The GNU version of 'struct tcphdr' has members 'doff', 'source' and 'dest',
which are not exposed by musl libc headers unless _GNU_SOURCE is defined.

Add this definition to fix errors seen compiling for mips64el/musl-libc:

  flow_dissector.c:118:30: error: 'struct tcphdr' has no member named 'doff'
    118 |                         .tcp.doff = 5,
        |                              ^~~~
  flow_dissector.c:119:30: error: 'struct tcphdr' has no member named 'source'
    119 |                         .tcp.source = 80,
        |                              ^~~~~~
  flow_dissector.c:120:30: error: 'struct tcphdr' has no member named 'dest'
    120 |                         .tcp.dest = 8080,
        |                              ^~~~

Fixes: ae173a9157 ("selftests/bpf: support BPF_FLOW_DISSECTOR_F_PARSE_1ST_FRAG")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/8f7ab21a73f678f9cebd32b26c444a686e57414d.1721713597.git.tony.ambardar@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Tony Ambardar 2024-07-22 22:54:40 -07:00 committed by Greg Kroah-Hartman
parent 306efef84b
commit 5ad69f5a04
1 changed files with 1 additions and 0 deletions
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tools/testing/selftests/bpf/prog_tests/flow_dissector.c
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@ -1,4 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
#define _GNU_SOURCE
#include <test_progs.h>
#include <network_helpers.h>
#include <error.h>