[v2,1/2] acl: fix rules with 8 bytes field size are broken

  In theory ACL library allows fields with 8B long.
Though in practice they usually not used, not tested,
and as was revealed by Ido, this functionality is not working properly.
There are few places inside ACL build code-path that need to be addressed.

Bugzilla ID: 673
Fixes: dc276b5780c2 ("acl: new library")
Cc: stable@dpdk.org

Reported-by: Ido Goshen <ido@cgstowernetworks.com>
Signed-off-by: Konstantin Ananyev <konstantin.v.ananyev@yandex.ru>
---
 lib/acl/acl_bld.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)
  

Tested-by: Ido Goshen <ido@cgstowernetworks.com>

> -----Original Message-----
> From: Konstantin Ananyev <konstantin.v.ananyev@yandex.ru>
> Sent: Sunday, 15 May 2022 23:03
> To: dev@dpdk.org
> Cc: Ido Goshen <Ido@cgstowernetworks.com>; stable@dpdk.org
> Subject: [PATCH v2 1/2] acl: fix rules with 8 bytes field size are broken
> 
> In theory ACL library allows fields with 8B long.
> Though in practice they usually not used, not tested, and as was revealed by Ido,
> this functionality is not working properly.
> There are few places inside ACL build code-path that need to be addressed.
> 
> Bugzilla ID: 673
> Fixes: dc276b5780c2 ("acl: new library")
> Cc: stable@dpdk.org
> 
> Reported-by: Ido Goshen <ido@cgstowernetworks.com>
> Signed-off-by: Konstantin Ananyev <konstantin.v.ananyev@yandex.ru>
> ---
>  lib/acl/acl_bld.c | 14 ++++++++++----
>  1 file changed, 10 insertions(+), 4 deletions(-)
> 
> diff --git a/lib/acl/acl_bld.c b/lib/acl/acl_bld.c index 7ea30f4186..2816632803
> 100644
> --- a/lib/acl/acl_bld.c
> +++ b/lib/acl/acl_bld.c
> @@ -12,6 +12,9 @@
>  /* number of pointers per alloc */
>  #define ACL_PTR_ALLOC	32
> 
> +/* account for situation when all fields are 8B long */
> +#define ACL_MAX_INDEXES	(2 * RTE_ACL_MAX_FIELDS)
> +
>  /* macros for dividing rule sets heuristics */
>  #define NODE_MAX	0x4000
>  #define NODE_MIN	0x800
> @@ -80,7 +83,7 @@ struct acl_build_context {
>  	struct tb_mem_pool        pool;
>  	struct rte_acl_trie       tries[RTE_ACL_MAX_TRIES];
>  	struct rte_acl_bld_trie   bld_tries[RTE_ACL_MAX_TRIES];
> -	uint32_t
> data_indexes[RTE_ACL_MAX_TRIES][RTE_ACL_MAX_FIELDS];
> +	uint32_t
> data_indexes[RTE_ACL_MAX_TRIES][ACL_MAX_INDEXES];
> 
>  	/* memory free lists for nodes and blocks used for node ptrs */
>  	struct acl_mem_block      blocks[MEM_BLOCK_NUM];
> @@ -988,7 +991,7 @@ build_trie(struct acl_build_context *context, struct
> rte_acl_build_rule *head,
>  				 */
>  				uint64_t mask;
>  				mask = RTE_ACL_MASKLEN_TO_BITMASK(
> -					fld->mask_range.u32,
> +					fld->mask_range.u64,
>  					rule->config->defs[n].size);
> 
>  				/* gen a mini-trie for this field */ @@ -1301,6
> +1304,9 @@ acl_build_index(const struct rte_acl_config *config, uint32_t
> *data_index)
>  		if (last_header != config->defs[n].input_index) {
>  			last_header = config->defs[n].input_index;
>  			data_index[m++] = config->defs[n].offset;
> +			if (config->defs[n].size > sizeof(uint32_t))
> +				data_index[m++] = config->defs[n].offset +
> +					sizeof(uint32_t);
>  		}
>  	}
> 
> @@ -1487,7 +1493,7 @@ acl_set_data_indexes(struct rte_acl_ctx *ctx)
>  		memcpy(ctx->data_indexes + ofs, ctx->trie[i].data_index,
>  			n * sizeof(ctx->data_indexes[0]));
>  		ctx->trie[i].data_index = ctx->data_indexes + ofs;
> -		ofs += RTE_ACL_MAX_FIELDS;
> +		ofs += ACL_MAX_INDEXES;
>  	}
>  }
> 
> @@ -1643,7 +1649,7 @@ rte_acl_build(struct rte_acl_ctx *ctx, const struct
> rte_acl_config *cfg)
>  			/* allocate and fill run-time  structures. */
>  			rc = rte_acl_gen(ctx, bcx.tries, bcx.bld_tries,
>  				bcx.num_tries, bcx.cfg.num_categories,
> -				RTE_ACL_MAX_FIELDS * RTE_DIM(bcx.tries) *
> +				ACL_MAX_INDEXES * RTE_DIM(bcx.tries) *
>  				sizeof(ctx->data_indexes[0]), max_size);
>  			if (rc == 0) {
>  				/* set data indexes. */
> --
> 2.34.1