| 1 | |
| 2 |
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| 3 |
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| 4 | #include "vmlinux.h"
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| 5 | #include <bpf/bpf_helpers.h>
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| 6 | #include <bpf/bpf_tracing.h>
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| 7 | #include "bpf_misc.h"
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| 8 | #include "bpf_kfuncs.h"
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| 9 | #include "crypto_common.h"
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| 10 |
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| 11 | int status;
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| 12 | SEC("syscall")
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| 13 | int crypto_release(void *ctx)
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| 14 | {
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| 15 | struct bpf_crypto_params params = {
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| 16 | .type = "skcipher",
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| 17 | .algo = "ecb(aes)",
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| 18 | .key_len = 16,
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| 19 | };
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| 20 |
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| 21 | struct bpf_crypto_ctx *cctx;
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| 22 | int err = 0;
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| 23 |
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| 24 | status = 0;
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| 25 |
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| 26 | cctx = bpf_crypto_ctx_create(¶ms, sizeof(params), &err);
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| 27 |
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| 28 | if (!cctx) {
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| 29 | status = err;
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| 30 | return 0;
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| 31 | }
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| 32 |
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| 33 | bpf_crypto_ctx_release(cctx);
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| 34 |
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| 35 | return 0;
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| 36 | }
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| 37 |
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| 38 | SEC("syscall")
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| 39 | __failure __msg("Unreleased reference")
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| 40 | int crypto_acquire(void *ctx)
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| 41 | {
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| 42 | struct bpf_crypto_params params = {
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| 43 | .type = "skcipher",
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| 44 | .algo = "ecb(aes)",
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| 45 | .key_len = 16,
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| 46 | };
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| 47 | struct bpf_crypto_ctx *cctx;
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| 48 | int err = 0;
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| 49 |
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| 50 | status = 0;
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| 51 |
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| 52 | cctx = bpf_crypto_ctx_create(¶ms, sizeof(params), &err);
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| 53 |
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| 54 | if (!cctx) {
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| 55 | status = err;
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| 56 | return 0;
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| 57 | }
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| 58 |
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| 59 | cctx = bpf_crypto_ctx_acquire(cctx);
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| 60 | if (!cctx)
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| 61 | return -EINVAL;
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| 62 |
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| 63 | bpf_crypto_ctx_release(cctx);
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| 64 |
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| 65 | return 0;
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| 66 | }
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| 67 |
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| 68 | char __license[] SEC("license") = "GPL";
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