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| author |   Alexei Starovoitov <ast@plumgrid.com> | 2015-07-20 20:34:19 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-07-20 20:52:32 -0700 |
| commit | 4d9c5c53ac99e4cb5d031897863203d7817b36e0 (patch) | |
| tree | 0eeec6acd33f939f37b4b67722b4588d5a88b304 /net/core/filter.c | |
| parent | bpf: introduce bpf_skb_vlan_push/pop() helpers (diff) | |
| download | linux-dev-4d9c5c53ac99e4cb5d031897863203d7817b36e0.tar.xz linux-dev-4d9c5c53ac99e4cb5d031897863203d7817b36e0.zip | |
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 '')
| -rw-r--r-- | net/core/filter.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/core/filter.c b/net/core/filter.c index 50338071fac4..786722a9c6f2 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -1457,6 +1457,7 @@ const struct bpf_func_proto bpf_skb_vlan_push_proto = { .arg2_type = ARG_ANYTHING, .arg3_type = ARG_ANYTHING, }; +EXPORT_SYMBOL_GPL(bpf_skb_vlan_push_proto); static u64 bpf_skb_vlan_pop(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5) { @@ -1471,6 +1472,7 @@ const struct bpf_func_proto bpf_skb_vlan_pop_proto = { .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, }; +EXPORT_SYMBOL_GPL(bpf_skb_vlan_pop_proto); bool bpf_helper_changes_skb_data(void *func) { |