netdev - Re: [PATCH iproute2-next] f_flower: implement pfcp opts

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Date: Thu, 15 Jun 2023 10:36:51 +0200
From: Marcin Szycik <marcin.szycik@...ux.intel.com>
To: Stephen Hemminger <stephen@...workplumber.org>
Cc: netdev@...r.kernel.org, dsahern@...il.com,
 Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
Subject: Re: [PATCH iproute2-next] f_flower: implement pfcp opts



On 14.06.2023 18:54, Stephen Hemminger wrote:
> On Wed, 14 Jun 2023 11:17:58 +0200
> Marcin Szycik <marcin.szycik@...ux.intel.com> wrote:
> 
>> +static void flower_print_pfcp_opts(const char *name, struct rtattr *attr,
>> +				   char *strbuf, int len)
>> +{
>> +	struct rtattr *tb[TCA_FLOWER_KEY_ENC_OPT_PFCP_MAX + 1];
>> +	struct rtattr *i = RTA_DATA(attr);
>> +	int rem = RTA_PAYLOAD(attr);
>> +	__be64 seid;
>> +	__u8 type;
>> +
>> +	parse_rtattr(tb, TCA_FLOWER_KEY_ENC_OPT_PFCP_MAX, i, rem);
>> +	type = rta_getattr_u8(tb[TCA_FLOWER_KEY_ENC_OPT_PFCP_TYPE]);
>> +	seid = rta_getattr_be64(tb[TCA_FLOWER_KEY_ENC_OPT_PFCP_SEID]);
>> +
>> +	snprintf(strbuf, len, "%02x:%llx", type, seid);
>> +}
>> +
> 
> NAK you need to support JSON output.
> Also whet if kernel gives partial data.

Hmm... when we were adding GTP opts parsing, you requested to remove JSON
support [1]. Are you sure you want us to add it here?

Could you elaborate about partial data? Are there any similar functions
which properly handle partial data?

[1] https://lore.kernel.org/netdev/20220127091541.6667d4d1@hermes.local

Regards,
Marcin