On 1/8/24 15:53, Tom Zanussi wrote: > The header table and related code is currently unused - it was > included and used for canned mode, but canned mode has been removed, > so this code can be safely removed as well. > > This indirectly fixes a bug reported by Dan Carpenter. > > Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> > Closes: https://lore.kernel.org/linux-crypto/b2e0bd974981291e16882686a2b9b1db3986abe4.camel@xxxxxxxxxxxxxxx/T/#m4403253d6a4347a925fab4fc1cdb4ef7c095fb86 > Signed-off-by: Tom Zanussi <tom.zanussi@xxxxxxxxxxxxxxx> Reviewed-by: Dave Jiang <dave.jiang@xxxxxxxxx> > --- > drivers/crypto/intel/iaa/iaa_crypto.h | 25 ---- > .../crypto/intel/iaa/iaa_crypto_comp_fixed.c | 1 - > drivers/crypto/intel/iaa/iaa_crypto_main.c | 108 +----------------- > 3 files changed, 3 insertions(+), 131 deletions(-) > > diff --git a/drivers/crypto/intel/iaa/iaa_crypto.h b/drivers/crypto/intel/iaa/iaa_crypto.h > index 014420f7beb0..2524091a5f70 100644 > --- a/drivers/crypto/intel/iaa/iaa_crypto.h > +++ b/drivers/crypto/intel/iaa/iaa_crypto.h > @@ -59,10 +59,8 @@ struct iaa_device_compression_mode { > const char *name; > > struct aecs_comp_table_record *aecs_comp_table; > - struct aecs_decomp_table_record *aecs_decomp_table; > > dma_addr_t aecs_comp_table_dma_addr; > - dma_addr_t aecs_decomp_table_dma_addr; > }; > > /* Representation of IAA device with wqs, populated by probe */ > @@ -107,23 +105,6 @@ struct aecs_comp_table_record { > u32 reserved_padding[2]; > } __packed; > > -/* AECS for decompress */ > -struct aecs_decomp_table_record { > - u32 crc; > - u32 xor_checksum; > - u32 low_filter_param; > - u32 high_filter_param; > - u32 output_mod_idx; > - u32 drop_init_decomp_out_bytes; > - u32 reserved[36]; > - u32 output_accum_data[2]; > - u32 out_bits_valid; > - u32 bit_off_indexing; > - u32 input_accum_data[64]; > - u8 size_qw[32]; > - u32 decomp_state[1220]; > -} __packed; > - > int iaa_aecs_init_fixed(void); > void iaa_aecs_cleanup_fixed(void); > > @@ -136,9 +117,6 @@ struct iaa_compression_mode { > int ll_table_size; > u32 *d_table; > int d_table_size; > - u32 *header_table; > - int header_table_size; > - u16 gen_decomp_table_flags; > iaa_dev_comp_init_fn_t init; > iaa_dev_comp_free_fn_t free; > }; > @@ -148,9 +126,6 @@ int add_iaa_compression_mode(const char *name, > int ll_table_size, > const u32 *d_table, > int d_table_size, > - const u8 *header_table, > - int header_table_size, > - u16 gen_decomp_table_flags, > iaa_dev_comp_init_fn_t init, > iaa_dev_comp_free_fn_t free); > > diff --git a/drivers/crypto/intel/iaa/iaa_crypto_comp_fixed.c b/drivers/crypto/intel/iaa/iaa_crypto_comp_fixed.c > index 45cf5d74f0fb..19d9a333ac49 100644 > --- a/drivers/crypto/intel/iaa/iaa_crypto_comp_fixed.c > +++ b/drivers/crypto/intel/iaa/iaa_crypto_comp_fixed.c > @@ -78,7 +78,6 @@ int iaa_aecs_init_fixed(void) > sizeof(fixed_ll_sym), > fixed_d_sym, > sizeof(fixed_d_sym), > - NULL, 0, 0, > init_fixed_mode, NULL); > if (!ret) > pr_debug("IAA fixed compression mode initialized\n"); > diff --git a/drivers/crypto/intel/iaa/iaa_crypto_main.c b/drivers/crypto/intel/iaa/iaa_crypto_main.c > index dfd3baf0a8d8..39a5fc905c4d 100644 > --- a/drivers/crypto/intel/iaa/iaa_crypto_main.c > +++ b/drivers/crypto/intel/iaa/iaa_crypto_main.c > @@ -258,16 +258,14 @@ static void free_iaa_compression_mode(struct iaa_compression_mode *mode) > kfree(mode->name); > kfree(mode->ll_table); > kfree(mode->d_table); > - kfree(mode->header_table); > > kfree(mode); > } > > /* > - * IAA Compression modes are defined by an ll_table, a d_table, and an > - * optional header_table. These tables are typically generated and > - * captured using statistics collected from running actual > - * compress/decompress workloads. > + * IAA Compression modes are defined by an ll_table and a d_table. > + * These tables are typically generated and captured using statistics > + * collected from running actual compress/decompress workloads. > * > * A module or other kernel code can add and remove compression modes > * with a given name using the exported @add_iaa_compression_mode() > @@ -315,9 +313,6 @@ EXPORT_SYMBOL_GPL(remove_iaa_compression_mode); > * @ll_table_size: The ll table size in bytes > * @d_table: The d table > * @d_table_size: The d table size in bytes > - * @header_table: Optional header table > - * @header_table_size: Optional header table size in bytes > - * @gen_decomp_table_flags: Otional flags used to generate the decomp table > * @init: Optional callback function to init the compression mode data > * @free: Optional callback function to free the compression mode data > * > @@ -330,9 +325,6 @@ int add_iaa_compression_mode(const char *name, > int ll_table_size, > const u32 *d_table, > int d_table_size, > - const u8 *header_table, > - int header_table_size, > - u16 gen_decomp_table_flags, > iaa_dev_comp_init_fn_t init, > iaa_dev_comp_free_fn_t free) > { > @@ -370,16 +362,6 @@ int add_iaa_compression_mode(const char *name, > mode->d_table_size = d_table_size; > } > > - if (header_table) { > - mode->header_table = kzalloc(header_table_size, GFP_KERNEL); > - if (!mode->header_table) > - goto free; > - memcpy(mode->header_table, header_table, header_table_size); > - mode->header_table_size = header_table_size; > - } > - > - mode->gen_decomp_table_flags = gen_decomp_table_flags; > - > mode->init = init; > mode->free = free; > > @@ -420,10 +402,6 @@ static void free_device_compression_mode(struct iaa_device *iaa_device, > if (device_mode->aecs_comp_table) > dma_free_coherent(dev, size, device_mode->aecs_comp_table, > device_mode->aecs_comp_table_dma_addr); > - if (device_mode->aecs_decomp_table) > - dma_free_coherent(dev, size, device_mode->aecs_decomp_table, > - device_mode->aecs_decomp_table_dma_addr); > - > kfree(device_mode); > } > > @@ -440,73 +418,6 @@ static int check_completion(struct device *dev, > bool compress, > bool only_once); > > -static int decompress_header(struct iaa_device_compression_mode *device_mode, > - struct iaa_compression_mode *mode, > - struct idxd_wq *wq) > -{ > - dma_addr_t src_addr, src2_addr; > - struct idxd_desc *idxd_desc; > - struct iax_hw_desc *desc; > - struct device *dev; > - int ret = 0; > - > - idxd_desc = idxd_alloc_desc(wq, IDXD_OP_BLOCK); > - if (IS_ERR(idxd_desc)) > - return PTR_ERR(idxd_desc); > - > - desc = idxd_desc->iax_hw; > - > - dev = &wq->idxd->pdev->dev; > - > - src_addr = dma_map_single(dev, (void *)mode->header_table, > - mode->header_table_size, DMA_TO_DEVICE); > - dev_dbg(dev, "%s: mode->name %s, src_addr %llx, dev %p, src %p, slen %d\n", > - __func__, mode->name, src_addr, dev, > - mode->header_table, mode->header_table_size); > - if (unlikely(dma_mapping_error(dev, src_addr))) { > - dev_dbg(dev, "dma_map_single err, exiting\n"); > - ret = -ENOMEM; > - return ret; > - } > - > - desc->flags = IAX_AECS_GEN_FLAG; > - desc->opcode = IAX_OPCODE_DECOMPRESS; > - > - desc->src1_addr = (u64)src_addr; > - desc->src1_size = mode->header_table_size; > - > - src2_addr = device_mode->aecs_decomp_table_dma_addr; > - desc->src2_addr = (u64)src2_addr; > - desc->src2_size = 1088; > - dev_dbg(dev, "%s: mode->name %s, src2_addr %llx, dev %p, src2_size %d\n", > - __func__, mode->name, desc->src2_addr, dev, desc->src2_size); > - desc->max_dst_size = 0; // suppressed output > - > - desc->decompr_flags = mode->gen_decomp_table_flags; > - > - desc->priv = 0; > - > - desc->completion_addr = idxd_desc->compl_dma; > - > - ret = idxd_submit_desc(wq, idxd_desc); > - if (ret) { > - pr_err("%s: submit_desc failed ret=0x%x\n", __func__, ret); > - goto out; > - } > - > - ret = check_completion(dev, idxd_desc->iax_completion, false, false); > - if (ret) > - dev_dbg(dev, "%s: mode->name %s check_completion failed ret=%d\n", > - __func__, mode->name, ret); > - else > - dev_dbg(dev, "%s: mode->name %s succeeded\n", __func__, > - mode->name); > -out: > - dma_unmap_single(dev, src_addr, 1088, DMA_TO_DEVICE); > - > - return ret; > -} > - > static int init_device_compression_mode(struct iaa_device *iaa_device, > struct iaa_compression_mode *mode, > int idx, struct idxd_wq *wq) > @@ -529,24 +440,11 @@ static int init_device_compression_mode(struct iaa_device *iaa_device, > if (!device_mode->aecs_comp_table) > goto free; > > - device_mode->aecs_decomp_table = dma_alloc_coherent(dev, size, > - &device_mode->aecs_decomp_table_dma_addr, GFP_KERNEL); > - if (!device_mode->aecs_decomp_table) > - goto free; > - > /* Add Huffman table to aecs */ > memset(device_mode->aecs_comp_table, 0, sizeof(*device_mode->aecs_comp_table)); > memcpy(device_mode->aecs_comp_table->ll_sym, mode->ll_table, mode->ll_table_size); > memcpy(device_mode->aecs_comp_table->d_sym, mode->d_table, mode->d_table_size); > > - if (mode->header_table) { > - ret = decompress_header(device_mode, mode, wq); > - if (ret) { > - pr_debug("iaa header decompression failed: ret=%d\n", ret); > - goto free; > - } > - } > - > if (mode->init) { > ret = mode->init(device_mode); > if (ret)
