Herbert,
Commits
7021b2e1cddd "esp4: Switch to new AEAD interface"
000ae7b2690e "esp6: Switch to new AEAD interface"
removed the following:
/* Get ivec. This can be wrong, check against another impls. */
iv = esph->enc_data;
from IPsec decryption - esp{4,6}_input(),
so the IV in req->iv received by the implementer is no longer valid.
Thus, the load of IV in caam driver - caamalg.c, init_authenc_job():
if (ivsize && (is_rfc3686 || !(alg->caam.geniv && encrypt)))
append_load_as_imm(desc, req->iv, ivsize,
LDST_CLASS_1_CCB |
LDST_SRCDST_BYTE_CONTEXT |
(ivoffset << LDST_OFFSET_SHIFT));
is not suited for case mentioned above.
Instead, the IV should be read from the req->src scatterlist
(which consists of assoc data, iv, ciphertext).
Please let me know if this is accurate, so I could prepare a fix.
Thanks,
Horia
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