Re: [dpdk-dev] [PATCH v2 2/2] app/testpmd: add support for integrity item

[Ori Kam <orika@nvidia.com>]

Hi Ferruh,

> -----Original Message-----
> From: Ferruh Yigit <ferruh.yigit@intel.com>
> 
> On 4/11/2021 6:34 PM, Gregory Etelson wrote:
> > From: Ori Kam <orika@nvidia.com>
> >
> > The integrity item allows the application to match
> > on the integrity of a packet.
> >
> > use example:
> > match that packet integrity checks are ok. The checks depend on
> > packet layers. For example ICMP packet will not check L4 level.
> > flow create 0 ingress pattern integrity value mask 0x01 value spec 0x01
> > match that L4 packet is ok - check L2 & L3 & L4 layers:
> > flow create 0 ingress pattern integrity value mask 0xfe value spec 0xfe
> >
> > Signed-off-by: Ori Kam <orika@nvidia.com>
> > Signed-off-by: Gregory Etelson <getelson@nvidia.com>
> > ---
> > v2 add testpmd patch
> > ---
> >   app/test-pmd/cmdline_flow.c | 39
> +++++++++++++++++++++++++++++++++++++
> 
> Hi Gregory, Ori,
> 
> Can you add some samples to "testpmd_funcs.rst#flow-rules-management"?
> 
> I asked in some other thread but did not get any response, what do you think to
> make 'testpmd_funcs.rst' sample update mandatory when testpmd flow added?
> 
I fully agree that each new function should be mandatory,
The question is do we want that each new item / action (they  use existing function)
I think it is a bit of overhead but I don't have strong opinion.

> 
> >   1 file changed, 39 insertions(+)
> >
> > diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c
> > index fb7a3a8bd3..b5dec34325 100644
> > --- a/app/test-pmd/cmdline_flow.c
> > +++ b/app/test-pmd/cmdline_flow.c
> > @@ -289,6 +289,9 @@ enum index {
> >   	ITEM_GENEVE_OPT_TYPE,
> >   	ITEM_GENEVE_OPT_LENGTH,
> >   	ITEM_GENEVE_OPT_DATA,
> > +	ITEM_INTEGRITY,
> > +	ITEM_INTEGRITY_LEVEL,
> > +	ITEM_INTEGRITY_VALUE,
> >
> >   	/* Validate/create actions. */
> >   	ACTIONS,
> > @@ -956,6 +959,7 @@ static const enum index next_item[] = {
> >   	ITEM_PFCP,
> >   	ITEM_ECPRI,
> >   	ITEM_GENEVE_OPT,
> > +	ITEM_INTEGRITY,
> >   	END_SET,
> >   	ZERO,
> >   };
> > @@ -1307,6 +1311,19 @@ static const enum index item_geneve_opt[] = {
> >   	ZERO,
> >   };
> >
> > +static const enum index item_integrity[] = {
> > +	ITEM_INTEGRITY_LEVEL,
> > +	ITEM_INTEGRITY_VALUE,
> > +	ZERO,
> > +};
> > +
> > +static const enum index item_integrity_lv[] = {
> > +	ITEM_INTEGRITY_LEVEL,
> > +	ITEM_INTEGRITY_VALUE,
> > +	ITEM_NEXT,
> > +	ZERO,
> > +};
> > +
> >   static const enum index next_action[] = {
> >   	ACTION_END,
> >   	ACTION_VOID,
> > @@ -3373,6 +3390,28 @@ static const struct token token_list[] = {
> >   				(sizeof(struct rte_flow_item_geneve_opt),
> >   				ITEM_GENEVE_OPT_DATA_SIZE)),
> >   	},
> > +	[ITEM_INTEGRITY] = {
> > +		.name = "integrity",
> > +		.help = "match packet integrity",
> > +		.priv = PRIV_ITEM(INTEGRITY,
> > +				  sizeof(struct rte_flow_item_integrity)),
> > +		.next = NEXT(item_integrity),
> > +		.call = parse_vc,
> > +	},
> > +	[ITEM_INTEGRITY_LEVEL] = {
> > +		.name = "level",
> > +		.help = "integrity level",
> > +		.next = NEXT(item_integrity_lv, NEXT_ENTRY(UNSIGNED),
> > +			     item_param),
> > +		.args = ARGS(ARGS_ENTRY(struct rte_flow_item_integrity,
> level)),
> > +	},
> > +	[ITEM_INTEGRITY_VALUE] = {
> > +		.name = "value",
> > +		.help = "integrity value",
> > +		.next = NEXT(item_integrity_lv, NEXT_ENTRY(UNSIGNED),
> > +			     item_param),
> > +		.args = ARGS(ARGS_ENTRY(struct rte_flow_item_integrity,
> value)),
> > +	},
> >   	/* Validate/create actions. */
> >   	[ACTIONS] = {
> >   		.name = "actions",
> >