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Date: Wed, 6 Nov 2019 21:46:42 -0800 From: Alexei Starovoitov <ast@...nel.org> To: <davem@...emloft.net> CC: <daniel@...earbox.net>, <x86@...nel.org>, <netdev@...r.kernel.org>, <bpf@...r.kernel.org>, <kernel-team@...com> Subject: [PATCH v2 bpf-next 15/17] selftests/bpf: Extend test_pkt_access test The test_pkt_access.o is used by multiple tests. Fix its section name so that program type can be automatically detected by libbpf and make it call another subprogram with skb argument. Signed-off-by: Alexei Starovoitov <ast@...nel.org> --- tools/testing/selftests/bpf/progs/test_pkt_access.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/bpf/progs/test_pkt_access.c b/tools/testing/selftests/bpf/progs/test_pkt_access.c index 7cf42d14103f..9aaee1400c1e 100644 --- a/tools/testing/selftests/bpf/progs/test_pkt_access.c +++ b/tools/testing/selftests/bpf/progs/test_pkt_access.c @@ -17,8 +17,14 @@ #define barrier() __asm__ __volatile__("": : :"memory") int _version SEC("version") = 1; -SEC("test1") -int process(struct __sk_buff *skb) +static __attribute__ ((noinline)) +int test_pkt_access_subprog(volatile struct __sk_buff *skb) +{ + return skb->len * 2; +} + +SEC("classifier/test_pkt_access") +int test_pkt_access(struct __sk_buff *skb) { void *data_end = (void *)(long)skb->data_end; void *data = (void *)(long)skb->data; @@ -48,6 +54,8 @@ int process(struct __sk_buff *skb) tcp = (struct tcphdr *)((void *)(ip6h) + ihl_len); } + if (test_pkt_access_subprog(skb) != skb->len * 2) + return TC_ACT_SHOT; if (tcp) { if (((void *)(tcp) + 20) > data_end || proto != 6) return TC_ACT_SHOT; -- 2.23.0
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