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authorTom Zanussi <tom.zanussi@linux.intel.com>2023-12-05 15:25:27 -0600
committerHerbert Xu <herbert@gondor.apana.org.au>2023-12-15 17:52:53 +0800
commit2ec6761df889fdf896fde761abd447596dd8f8c2 (patch)
tree57cdcb8d80cebd82400a63f7b10a9ba59ce4795d /crypto
parentb190447e0fa3ef7355480d641d078962e03768b4 (diff)
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crypto: iaa - Add support for deflate-iaa compression algorithm
This patch registers the deflate-iaa deflate compression algorithm and hooks it up to the IAA hardware using the 'fixed' compression mode introduced in the previous patch. Because the IAA hardware has a 4k history-window limitation, only buffers <= 4k, or that have been compressed using a <= 4k history window, are technically compliant with the deflate spec, which allows for a window of up to 32k. Because of this limitation, the IAA fixed mode deflate algorithm is given its own algorithm name, 'deflate-iaa'. With this change, the deflate-iaa crypto algorithm is registered and operational, and compression and decompression operations are fully enabled following the successful binding of the first IAA workqueue to the iaa_crypto sub-driver. when there are no IAA workqueues bound to the driver, the IAA crypto algorithm can be unregistered by removing the module. A new iaa_crypto 'verify_compress' driver attribute is also added, allowing the user to toggle compression verification. If set, each compress will be internally decompressed and the contents verified, returning error codes if unsuccessful. This can be toggled with 0/1: echo 0 > /sys/bus/dsa/drivers/crypto/verify_compress The default setting is '1' - verify all compresses. The verify_compress value setting at the time the algorithm is registered is captured in the algorithm's crypto_ctx and used for all compresses when using the algorithm. [ Based on work originally by George Powley, Jing Lin and Kyung Min Park ] Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/testmgr.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index e23a34337faf..c26aeda85787 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -4797,6 +4797,16 @@ static const struct alg_test_desc alg_test_descs[] = {
}
}
}, {
+ .alg = "deflate-iaa",
+ .test = alg_test_comp,
+ .fips_allowed = 1,
+ .suite = {
+ .comp = {
+ .comp = __VECS(deflate_comp_tv_template),
+ .decomp = __VECS(deflate_decomp_tv_template)
+ }
+ }
+ }, {
.alg = "dh",
.test = alg_test_kpp,
.suite = {