The SM4 CCM/GCM assembly functions for encryption and decryption is
called via indirect function calls. Therefore they need to use
SYM_TYPED_FUNC_START instead of SYM_FUNC_START to cause its type hash
to be emitted when the kernel is built with CONFIG_CFI_CLANG=y.
Otherwise, the code crashes with a CFI failure (if the compiler didn't
happen to optimize out the indirect call).
Fixes: 67fa3a7fdf ("crypto: arm64/sm4 - add CE implementation for CCM mode")
Fixes: ae1b83c7d5 ("crypto: arm64/sm4 - add CE implementation for GCM mode")
Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch is a CE-optimized assembly implementation for GCM mode.
Benchmark on T-Head Yitian-710 2.75 GHz, the data comes from the 224 and 224
modes of tcrypt, and compared the performance before and after this patch (the
driver used before this patch is gcm_base(ctr-sm4-ce,ghash-generic)).
The abscissas are blocks of different lengths. The data is tabulated and the
unit is Mb/s:
Before (gcm_base(ctr-sm4-ce,ghash-generic)):
gcm(sm4) | 16 64 256 512 1024 1420 4096 8192
-------------+---------------------------------------------------------------------
GCM enc | 25.24 64.65 104.66 116.69 123.81 125.12 129.67 130.62
GCM dec | 25.40 64.80 104.74 116.70 123.81 125.21 129.68 130.59
GCM mb enc | 24.95 64.06 104.20 116.38 123.55 124.97 129.63 130.61
GCM mb dec | 24.92 64.00 104.13 116.34 123.55 124.98 129.56 130.48
After:
gcm-sm4-ce | 16 64 256 512 1024 1420 4096 8192
-------------+---------------------------------------------------------------------
GCM enc | 108.62 397.18 971.60 1283.92 1522.77 1513.39 1777.00 1806.96
GCM dec | 116.36 398.14 1004.27 1319.11 1624.21 1635.43 1932.54 1974.20
GCM mb enc | 107.13 391.79 962.05 1274.94 1514.76 1508.57 1769.07 1801.58
GCM mb dec | 113.40 389.36 988.51 1307.68 1619.10 1631.55 1931.70 1970.86
Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
