[1/3] examples/l3fwd: validate ptype only for type of traffic sent

  The check_ptype function is not considering the ptype of the incoming
traffic. --parse-ptype flag must be provided only when the NIC does not
support parsing the ptype of the incoming traffic

Suggested-by: Nathan Brown <nathan.brown@arm.com>
Signed-off-by: Kamalakshitha Aligeri <kamalakshitha.aligeri@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
Reviewed-by: Nathan Brown <nathan.brown@arm.com>
Reviewed-by: Feifei Wang <feifei.wang2@arm.com>
---
 examples/l3fwd/l3fwd_em.c  |  8 +++++---
 examples/l3fwd/l3fwd_lpm.c | 13 +++++++------
 examples/l3fwd/main.c      |  5 ++---
 3 files changed, 14 insertions(+), 12 deletions(-)
  

Hi all,
Can you please check the patch and provide comments?

Thanks,
Kamalakshitha

> -----Original Message-----
> From: Kamalakshitha Aligeri <kamalakshitha.aligeri@arm.com>
> Sent: Monday, November 14, 2022 1:26 PM
> To: jerinj@marvell.com; thomas@monjalon.net;
> david.marchand@redhat.com
> Cc: dev@dpdk.org; nd <nd@arm.com>; Kamalakshitha Aligeri
> <Kamalakshitha.Aligeri@arm.com>; Nathan Brown
> <Nathan.Brown@arm.com>; Ruifeng Wang <Ruifeng.Wang@arm.com>;
> Feifei Wang <Feifei.Wang2@arm.com>
> Subject: [PATCH 1/3] examples/l3fwd: validate ptype only for type of traffic
> sent
> 
> The check_ptype function is not considering the ptype of the incoming
> traffic. --parse-ptype flag must be provided only when the NIC does not
> support parsing the ptype of the incoming traffic
> 
> Suggested-by: Nathan Brown <nathan.brown@arm.com>
> Signed-off-by: Kamalakshitha Aligeri <kamalakshitha.aligeri@arm.com>
> Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
> Reviewed-by: Nathan Brown <nathan.brown@arm.com>
> Reviewed-by: Feifei Wang <feifei.wang2@arm.com>
> ---
>  examples/l3fwd/l3fwd_em.c  |  8 +++++---  examples/l3fwd/l3fwd_lpm.c |
> 13 +++++++------
>  examples/l3fwd/main.c      |  5 ++---
>  3 files changed, 14 insertions(+), 12 deletions(-)
> 
> diff --git a/examples/l3fwd/l3fwd_em.c b/examples/l3fwd/l3fwd_em.c
> index a203dc9e46..682ad343d7 100644
> --- a/examples/l3fwd/l3fwd_em.c
> +++ b/examples/l3fwd/l3fwd_em.c
> @@ -507,12 +507,14 @@ em_check_ptype(int portid)
>  		}
>  	}
> 
> -	if (ptype_l3_ipv4_ext == 0)
> +	if (!ipv6 && !ptype_l3_ipv4_ext) {
>  		printf("port %d cannot parse RTE_PTYPE_L3_IPV4_EXT\n",
> portid);
> -	if (ptype_l3_ipv6_ext == 0)
> +		return 0;
> +	}
> +	if (ipv6 && !ptype_l3_ipv6_ext) {
>  		printf("port %d cannot parse RTE_PTYPE_L3_IPV6_EXT\n",
> portid);
> -	if (!ptype_l3_ipv4_ext || !ptype_l3_ipv6_ext)
>  		return 0;
> +	}
> 
>  	if (ptype_l4_tcp == 0)
>  		printf("port %d cannot parse RTE_PTYPE_L4_TCP\n", portid);
> diff --git a/examples/l3fwd/l3fwd_lpm.c b/examples/l3fwd/l3fwd_lpm.c
> index 22d7f61a42..1ac78281f9 100644
> --- a/examples/l3fwd/l3fwd_lpm.c
> +++ b/examples/l3fwd/l3fwd_lpm.c
> @@ -667,16 +667,17 @@ lpm_check_ptype(int portid)
>  			ptype_l3_ipv6 = 1;
>  	}
> 
> -	if (ptype_l3_ipv4 == 0)
> +	if (!ipv6 && !ptype_l3_ipv4) {
>  		printf("port %d cannot parse RTE_PTYPE_L3_IPV4\n",
> portid);
> +		return 0;
> +	}
> 
> -	if (ptype_l3_ipv6 == 0)
> +	if (ipv6 && !ptype_l3_ipv6) {
>  		printf("port %d cannot parse RTE_PTYPE_L3_IPV6\n",
> portid);
> +		return 0;
> +	}
> 
> -	if (ptype_l3_ipv4 && ptype_l3_ipv6)
> -		return 1;
> -
> -	return 0;
> +	return 1;
> 
>  }
> 
> diff --git a/examples/l3fwd/main.c b/examples/l3fwd/main.c index
> 5198ff30dd..71a3018036 100644
> --- a/examples/l3fwd/main.c
> +++ b/examples/l3fwd/main.c
> @@ -964,12 +964,11 @@ parse_args(int argc, char **argv)
>  	}
> 
>  	/*
> -	 * ipv6 and hash flags are valid only for
> -	 * exact match, reset them to default for
> +	 * hash flag is valid only for
> +	 * exact match, reset it to default for
>  	 * longest-prefix match.
>  	 */
>  	if (lookup_mode == L3FWD_LOOKUP_LPM) {
> -		ipv6 = 0;
>  		hash_entry_number = HASH_ENTRY_NUMBER_DEFAULT;
>  	}
> 
> --
> 2.17.1