On Sun, May 24, 2020 at 7:30 PM Thomas Monjalon wrote:
>
> Some compilers raise an error when declaring a variable
> in the middle of a function. This is a C99 allowance.
> Even if DPDK switches globally to C99 or C11 standard,
> the coding rules are for declarations at the beginning
> of a block:
> http://doc.dpdk.org/guides/contributing/coding_style.html#local-variables
>
> This coding style is enforced by adding a check of
> the common patterns like "for (int i;"
>
> The occurrences of the checked pattern are fixed:
> 'for *(\(char\|u\?int\|unsigned\|s\?size_t\)'
> In the file dpaa2_sparser.c, the fix is to remove the unused macros.
>
> Signed-off-by: Thomas Monjalon
> ---
> v2:
> - check s?size_t and fix one occurence
> - fix new occurences in Windows EAL
> - test-fib has been fixed in the meantime
> ---
> devtools/checkpatches.sh | 8
> doc/guides/prog_guide/eventdev.rst | 6 --
> drivers/common/mlx5/mlx5_devx_cmds.c | 4 ++--
> drivers/common/mlx5/mlx5_glue.c | 3 ++-
> drivers/crypto/caam_jr/caam_jr.c | 5 -
> drivers/net/dpaa2/dpaa2_sparser.c| 30
> lib/librte_eal/windows/eal_lcore.c | 6 --
> 7 files changed, 24 insertions(+), 38 deletions(-)
>
> diff --git a/devtools/checkpatches.sh b/devtools/checkpatches.sh
> index 42b833e0d7..5763a7e953 100755
> --- a/devtools/checkpatches.sh
> +++ b/devtools/checkpatches.sh
> @@ -69,6 +69,14 @@ check_forbidden_additions() { #
> -f $(dirname $(readlink -f $0))/check-forbidden-tokens.awk \
> "$1" || res=1
>
> + # forbid variable declaration inside "for" loop
> + awk -v FOLDERS='.' \
> + -v EXPRESSIONS='for *\\((char|u?int|unsigned|s?size_t)' \
> + -v RET_ON_FAIL=1 \
> + -v MESSAGE='Declaring a variable inside for()' \
> + -f $(dirname $(readlink -f $0))/check-forbidden-tokens.awk \
> + "$1" || res=1
> +
> # svg figures must be included with wildcard extension
> # because of png conversion for pdf docs
> awk -v FOLDERS='doc' \
> diff --git a/doc/guides/prog_guide/eventdev.rst
> b/doc/guides/prog_guide/eventdev.rst
> index 7bcd7603b1..ccde086f63 100644
> --- a/doc/guides/prog_guide/eventdev.rst
> +++ b/doc/guides/prog_guide/eventdev.rst
> @@ -242,9 +242,10 @@ Once queues are set up successfully, create the ports as
> required.
> };
> int dev_id = 0;
> int rx_port_id = 0;
> +int worker_port_id;
> int err = rte_event_port_setup(dev_id, rx_port_id, &rx_conf);
>
> -for(int worker_port_id = 1; worker_port_id <= 4; worker_port_id++) {
> +for (worker_port_id = 1; worker_port_id <= 4; worker_port_id++) {
> int err = rte_event_port_setup(dev_id, worker_port_id,
> &worker_conf);
> }
>
> @@ -277,8 +278,9 @@ can be achieved like this:
> uint8_t atomic_qs[] = {0, 1};
> uint8_t single_link_q = 2;
> uint8_t priority = RTE_EVENT_DEV_PRIORITY_NORMAL;
> +int worker_port_id;
>
> -for(int worker_port_id = 1; worker_port_id <= 4; worker_port_id++) {
> +for (worker_port_id = 1; worker_port_id <= 4; worker_port_id++) {
> int links_made = rte_event_port_link(dev_id, worker_port_id,
> atomic_qs, NULL, 2);
> }
> int links_made = rte_event_port_link(dev_id, tx_port_id,
> &single_link_q, &priority, 1);
> diff --git a/drivers/common/mlx5/mlx5_devx_cmds.c
> b/drivers/common/mlx5/mlx5_devx_cmds.c
> index fba485e724..1c8b36c91a 100644
> --- a/drivers/common/mlx5/mlx5_devx_cmds.c
> +++ b/drivers/common/mlx5/mlx5_devx_cmds.c
> @@ -416,7 +416,7 @@ mlx5_devx_cmd_query_hca_attr(void *ctx,
> uint32_t in[MLX5_ST_SZ_DW(query_hca_cap_in)] = {0};
> uint32_t out[MLX5_ST_SZ_DW(query_hca_cap_out)] = {0};
> void *hcattr;
> - int status, syndrome, rc;
> + int status, syndrome, rc, i;
>
> MLX5_SET(query_hca_cap_in, in, opcode, MLX5_CMD_OP_QUERY_HCA_CAP);
> MLX5_SET(query_hca_cap_in, in, op_mod,
> @@ -529,7 +529,7 @@ mlx5_devx_cmd_query_hca_attr(void *ctx,
> attr->lro_max_msg_sz_mode = MLX5_GET
> (per_protocol_networking_offload_caps,
> hcattr, lro_max_msg_sz_mode);
> - for (int i = 0 ; i < MLX5_LRO_NUM_SUPP_PERIODS ; i++) {
> + for (i = 0 ; i < MLX5_LRO_NUM_SUPP_PERIODS ; i++) {
> attr->lro_timer_supported_periods[i] =
> MLX5_GET(per_protocol_networking_offload_caps, hcattr,
> lro_timer_supported_periods[i]);
> diff --git a/drivers/common/mlx5/mlx5_glue.c b/drivers/common/mlx5/mlx5_glue.c
> index f270f677b7..563941c2df 100644
> --- a/drivers/common/mlx5/mlx5_glue.c
> +++ b/drivers/common/mlx5/mlx5_glue.c
> @@ -587,11 +587,12 @@ mlx5_glue_dv_create_flow(void *ma
