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selftests: bpf: crypto: adjust bench to use nullable IV

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The bench shows some improvements, around 4% faster on decrypt.

Before:

Benchmark 'crypto-decrypt' started.
Iter   0 (325.719us): hits    5.105M/s (  5.105M/prod), drops 0.000M/s, total operations    5.105M/s
Iter   1 (-17.295us): hits    5.224M/s (  5.224M/prod), drops 0.000M/s, total operations    5.224M/s
Iter   2 (  5.504us): hits    4.630M/s (  4.630M/prod), drops 0.000M/s, total operations    4.630M/s
Iter   3 (  9.239us): hits    5.148M/s (  5.148M/prod), drops 0.000M/s, total operations    5.148M/s
Iter   4 ( 37.885us): hits    5.198M/s (  5.198M/prod), drops 0.000M/s, total operations    5.198M/s
Iter   5 (-53.282us): hits    5.167M/s (  5.167M/prod), drops 0.000M/s, total operations    5.167M/s
Iter   6 (-17.809us): hits    5.186M/s (  5.186M/prod), drops 0.000M/s, total operations    5.186M/s
Summary: hits    5.092 ± 0.228M/s (  5.092M/prod), drops    0.000 ±0.000M/s, total operations    5.092 ± 0.228M/s

After:

Benchmark 'crypto-decrypt' started.
Iter   0 (268.912us): hits    5.312M/s (  5.312M/prod), drops 0.000M/s, total operations    5.312M/s
Iter   1 (124.869us): hits    5.354M/s (  5.354M/prod), drops 0.000M/s, total operations    5.354M/s
Iter   2 (-36.801us): hits    5.334M/s (  5.334M/prod), drops 0.000M/s, total operations    5.334M/s
Iter   3 (254.628us): hits    5.334M/s (  5.334M/prod), drops 0.000M/s, total operations    5.334M/s
Iter   4 (-77.691us): hits    5.275M/s (  5.275M/prod), drops 0.000M/s, total operations    5.275M/s
Iter   5 (-164.510us): hits    5.313M/s (  5.313M/prod), drops 0.000M/s, total operations    5.313M/s
Iter   6 (-81.376us): hits    5.346M/s (  5.346M/prod), drops 0.000M/s, total operations    5.346M/s
Summary: hits    5.326 ± 0.029M/s (  5.326M/prod), drops    0.000 ±0.000M/s, total operations    5.326 ± 0.029M/s

Reviewed-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Vadim Fedorenko <vadfed@meta.com>
Link: https://lore.kernel.org/r/20240613211817.1551967-5-vadfed@meta.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Vadim Fedorenko 2024-06-13 14:18:16 -07:00 committed by Alexei Starovoitov
parent 9363dc8ddc
commit 9b560751f7
1 changed files with 4 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
tools/testing/selftests/bpf/progs/crypto_bench.c
View File

@ -57,7 +57,7 @@ int crypto_encrypt(struct __sk_buff *skb)
{
struct __crypto_ctx_value *v;
struct bpf_crypto_ctx *ctx;
struct bpf_dynptr psrc, pdst, iv;
struct bpf_dynptr psrc, pdst;
v = crypto_ctx_value_lookup();
if (!v) {
@ -73,9 +73,8 @@ int crypto_encrypt(struct __sk_buff *skb)
bpf_dynptr_from_skb(skb, 0, &psrc);
bpf_dynptr_from_mem(dst, len, 0, &pdst);
bpf_dynptr_from_mem(dst, 0, 0, &iv);
status = bpf_crypto_encrypt(ctx, &psrc, &pdst, &iv);
status = bpf_crypto_encrypt(ctx, &psrc, &pdst, NULL);
__sync_add_and_fetch(&hits, 1);
return 0;
@ -84,7 +83,7 @@ int crypto_encrypt(struct __sk_buff *skb)
SEC("tc")
int crypto_decrypt(struct __sk_buff *skb)
{
struct bpf_dynptr psrc, pdst, iv;
struct bpf_dynptr psrc, pdst;
struct __crypto_ctx_value *v;
struct bpf_crypto_ctx *ctx;
@ -98,9 +97,8 @@ int crypto_decrypt(struct __sk_buff *skb)
bpf_dynptr_from_skb(skb, 0, &psrc);
bpf_dynptr_from_mem(dst, len, 0, &pdst);
bpf_dynptr_from_mem(dst, 0, 0, &iv);
status = bpf_crypto_decrypt(ctx, &psrc, &pdst, &iv);
status = bpf_crypto_decrypt(ctx, &psrc, &pdst, NULL);
__sync_add_and_fetch(&hits, 1);
return 0;