[PATCH] devtools/cocci: add script for ethdev namespace

[Ferruh Yigit]

On 11/23/2021 8:47 AM, Aman Singh wrote:
> The cocci script is to help add prefix 'RTE_ETH' namespace to enum
> & macro of ethdev library. It helps in automating these changes for
> applications. The script won't make changes in the code comment part.
> Usage: spatch <script path> <app path>
> 

Hi Aman,

I am trying to test the script, I thought an easy way can be to run
the script in an old version of the DPDK release and expecting it
build successfully after script run.
For that I am using 'spatch --include-headers --in-place' option on p
the repo.

Getting build error for the OFFLOAD macros, header files seems not
updated for the offloads, but .c files are updated.
Like:
DEV_TX_OFFLOAD_TCP_CKSUM --> RTE_ETH_TX_OFFLOAD_TCP_CKSUM
DEV_RX_OFFLOAD_UDP_CKSUM --> RTE_ETH_RX_OFFLOAD_UDP_CKSUM
...

Am I missing something, or .h left out intentionally?
Is there a way to update all?

> Signed-off-by: Aman Singh <aman.deep.singh at intel.com>
> ---
>   devtools/cocci/namespace_ethdev.cocci | 48 +++++++++++++++++++++++++++
>   1 file changed, 48 insertions(+)
>   create mode 100644 devtools/cocci/namespace_ethdev.cocci
> 
> diff --git a/devtools/cocci/namespace_ethdev.cocci b/devtools/cocci/namespace_ethdev.cocci
> new file mode 100644
> index 0000000000..d5de41e117
> --- /dev/null
> +++ b/devtools/cocci/namespace_ethdev.cocci
> @@ -0,0 +1,48 @@
> + at rule1@
> +identifier I =~  "^(RTE_FC_|ETH_MQ_|ETH_RSS|DEV_RX_|DEV_TX_|ETH_LINK|RTE_RETA|
> +|ETH_DCB|RTE_TUNNEL|ETH_VLAN|ETH_4|ETH_8|ETH_16|ETH_32|ETH_64|RTE_FDIR|RTE_L2|
> +|ETH_SPEED|ETH_MIRROR|ETH_VMDQ|ETH_NUM|ETH_QINQ|ETH_MAX_)";
> +@@
> +I
> +
> +@ script : python p@
> +I << rule1.I;
> +J;
> +@@
> +coccinelle .J="RTE_ETH_" + I[4:];
> +
> +exception_matches = ["ETH_VLAN_FILTER_CLASSIFY","ETH_VLAN_FILTER_ANY",
> +"ETH_VLAN_FILTER_SPEC","ETH_RSS_MODE","ETH_RSS_UPDATE","RTE_FDIR_MODE",
> +"RTE_FDIR_NO","RTE_FDIR_REPORT","ETH_MAX_RX_CLIENTS_E1H",
> +"ETH_MAX_AGGREGATION_QUEUES_E1","ETH_RSS_ENGINE_NUM","ETH_NUM_MAC_FILTERS",
> +"ETH_MAX_NUM_RX_QUEUES_PER_VF_QUAD","ETH_RSS_IND_TABLE_ENTRIES_NUM",
> +"ETH_RSS_KEY_SIZE_REGS","ETH_NUM_STATISTIC_COUNTERS","ETH_SPEED_"]
> +
> +if any(x in I for x in exception_matches):
> +        coccinelle .J= I;
> +
> +@ identifier@
> +identifier rule1.I;
> +identifier p.J;
> +@@
> +- I
> ++ J
> +
> +// Below rule for structures only
> + at rule2@
> +identifier A  =~  "rte_fdir_conf|rte_intr_conf";
> +@@
> +struct A
> +
> +@ script : python p2@
> +A << rule2.A;
> +B;
> +@@
> +coccinelle .B="rte_eth_" + A[4:];
> +
> +@ identifier2@
> +identifier rule2.A;
> +identifier p2.B;
> +@@
> +- struct A
> ++ struct B
>