[PATCH 6.6 206/538] selftests/bpf: Fix errors compiling decap_sanity.c with musl libc

[Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Tony Ambardar <tony.ambardar@xxxxxxxxx>

[ Upstream commit 1b00f355130a5dfc38a01ad02458ae2cb2ebe609 ]

Remove a redundant include of '<linux/in6.h>', whose needed definitions are
already provided by 'test_progs.h'. This avoids errors seen compiling for
mips64el/musl-libc:

  In file included from .../arpa/inet.h:9,
                   from ./test_progs.h:17,
                   from prog_tests/decap_sanity.c:9:
  .../netinet/in.h:23:8: error: redefinition of 'struct in6_addr'
     23 | struct in6_addr {
        |        ^~~~~~~~
  In file included from decap_sanity.c:7:
  .../linux/in6.h:33:8: note: originally defined here
     33 | struct in6_addr {
        |        ^~~~~~~~
  .../netinet/in.h:34:8: error: redefinition of 'struct sockaddr_in6'
     34 | struct sockaddr_in6 {
        |        ^~~~~~~~~~~~
  .../linux/in6.h:50:8: note: originally defined here
     50 | struct sockaddr_in6 {
        |        ^~~~~~~~~~~~
  .../netinet/in.h:42:8: error: redefinition of 'struct ipv6_mreq'
     42 | struct ipv6_mreq {
        |        ^~~~~~~~~
  .../linux/in6.h:60:8: note: originally defined here
     60 | struct ipv6_mreq {
        |        ^~~~~~~~~

Fixes: 70a00e2f1dba ("selftests/bpf: Test bpf_skb_adjust_room on CHECKSUM_PARTIAL")
Signed-off-by: Tony Ambardar <tony.ambardar@xxxxxxxxx>
Signed-off-by: Andrii Nakryiko <andrii@xxxxxxxxxx>
Link: https://lore.kernel.org/bpf/e986ba2d7edccd254b54f7cd049b98f10bafa8c3.1721713597.git.tony.ambardar@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 tools/testing/selftests/bpf/prog_tests/decap_sanity.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/prog_tests/decap_sanity.c b/tools/testing/selftests/bpf/prog_tests/decap_sanity.c
index 5c0ebe6ba8667..95ea5a6a5f18d 100644
--- a/tools/testing/selftests/bpf/prog_tests/decap_sanity.c
+++ b/tools/testing/selftests/bpf/prog_tests/decap_sanity.c
@@ -4,7 +4,6 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <net/if.h>
-#include <linux/in6.h>
 
 #include "test_progs.h"
 #include "network_helpers.h"
-- 
2.43.0