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authorAlexei Starovoitov <ast@plumgrid.com>2015-07-20 20:34:19 -0700
committerDavid S. Miller <davem@davemloft.net>2015-07-20 20:52:32 -0700
commit4d9c5c53ac99e4cb5d031897863203d7817b36e0 (patch)
tree0eeec6acd33f939f37b4b67722b4588d5a88b304 /kernel/bpf/core.c
parent4e10df9a60d96ced321dd2af71da558c6b750078 (diff)
downloadlinux-sh-4d9c5c53ac99e4cb5d031897863203d7817b36e0.tar.gz
test_bpf: add bpf_skb_vlan_push/pop() tests
improve accuracy of timing in test_bpf and add two stress tests: - {skb->data[0], get_smp_processor_id} repeated 2k times - {skb->data[0], vlan_push} x 68 followed by {skb->data[0], vlan_pop} x 68 1st test is useful to test performance of JIT implementation of BPF_LD_ABS together with BPF_CALL instructions. 2nd test is stressing skb_vlan_push/pop logic together with skb->data access via BPF_LD_ABS insn which checks that re-caching of skb->data is done correctly. In order to call bpf_skb_vlan_push() from test_bpf.ko have to add three export_symbol_gpl. Signed-off-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/bpf/core.c')
-rw-r--r--kernel/bpf/core.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c
index bf38f5e8196c..fafa74161445 100644
--- a/kernel/bpf/core.c
+++ b/kernel/bpf/core.c
@@ -177,6 +177,7 @@ noinline u64 __bpf_call_base(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5)
{
return 0;
}
+EXPORT_SYMBOL_GPL(__bpf_call_base);
/**
* __bpf_prog_run - run eBPF program on a given context