linux/tools/testing/selftests/bpf/progs/test_pkt_md_access.c
Toke Høiland-Jørgensen 3e689141e6 selftests: Use consistent include paths for libbpf
Fix all selftests to include libbpf header files with the bpf/ prefix, to
be consistent with external users of the library. Also ensure that all
includes of exported libbpf header files (those that are exported on 'make
install' of the library) use bracketed includes instead of quoted.

To not break the build, keep the old include path until everything has been
changed to the new one; a subsequent patch will remove that.

Fixes: 6910d7d3867a ("selftests/bpf: Ensure bpf_helper_defs.h are taken from selftests dir")
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/157952560568.1683545.9649335788846513446.stgit@toke.dk
2020-01-20 16:37:45 -08:00

44 lines
1.2 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (c) 2017 Facebook
*/
#include <stddef.h>
#include <string.h>
#include <linux/bpf.h>
#include <linux/pkt_cls.h>
#include <bpf/bpf_helpers.h>
int _version SEC("version") = 1;
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define TEST_FIELD(TYPE, FIELD, MASK) \
{ \
TYPE tmp = *(volatile TYPE *)&skb->FIELD; \
if (tmp != ((*(volatile __u32 *)&skb->FIELD) & MASK)) \
return TC_ACT_SHOT; \
}
#else
#define TEST_FIELD_OFFSET(a, b) ((sizeof(a) - sizeof(b)) / sizeof(b))
#define TEST_FIELD(TYPE, FIELD, MASK) \
{ \
TYPE tmp = *((volatile TYPE *)&skb->FIELD + \
TEST_FIELD_OFFSET(skb->FIELD, TYPE)); \
if (tmp != ((*(volatile __u32 *)&skb->FIELD) & MASK)) \
return TC_ACT_SHOT; \
}
#endif
SEC("classifier/test_pkt_md_access")
int test_pkt_md_access(struct __sk_buff *skb)
{
TEST_FIELD(__u8, len, 0xFF);
TEST_FIELD(__u16, len, 0xFFFF);
TEST_FIELD(__u32, len, 0xFFFFFFFF);
TEST_FIELD(__u16, protocol, 0xFFFF);
TEST_FIELD(__u32, protocol, 0xFFFFFFFF);
TEST_FIELD(__u8, hash, 0xFF);
TEST_FIELD(__u16, hash, 0xFFFF);
TEST_FIELD(__u32, hash, 0xFFFFFFFF);
return TC_ACT_OK;
}