[PATCH 2/2] app/testpmd: add disable-flow-flush parameter

[Ori Kam]

Hi,

> -----Original Message-----
> From: Ferruh Yigit <ferruh.yigit at amd.com>
> Sent: Wednesday, 25 January 2023 20:38
> 
> On 12/15/2022 1:41 AM, Chengwen Feng wrote:
> > This patch adds "--disable-flow-flush" parameter, which could used to
> > disable port flow flush when stop port. It allows testing keep flow
> > rules or shared flow objects across restart.
> >
> > Signed-off-by: Chengwen Feng <fengchengwen at huawei.com>
> 
> +cc Ori
> 
> I am for proceeding with this patch unless there is objection from Aman
> & Ori.
> 
> > ---
> >  app/test-pmd/parameters.c             | 4 ++++
> >  app/test-pmd/testpmd.c                | 7 ++++++-
> >  app/test-pmd/testpmd.h                | 1 +
> >  doc/guides/testpmd_app_ug/run_app.rst | 5 +++++
> >  4 files changed, 16 insertions(+), 1 deletion(-)
> >
> > diff --git a/app/test-pmd/parameters.c b/app/test-pmd/parameters.c
> > index d597c209ba..e734ad9a02 100644
> > --- a/app/test-pmd/parameters.c
> > +++ b/app/test-pmd/parameters.c
> > @@ -175,6 +175,7 @@ usage(char* progname)
> >  	       "disable print of designated event or all of them.\n");
> >  	printf("  --flow-isolate-all: "
> >  	       "requests flow API isolated mode on all ports at initialization
> time.\n");
> > +	printf("  --disable-flow-flush: disable port flow flush when stop
> port.\n");
> >  	printf("  --tx-offloads=0xXXXXXXXX: hexadecimal bitmask of TX
> queue offloads\n");
> >  	printf("  --rx-offloads=0xXXXXXXXX: hexadecimal bitmask of RX
> queue offloads\n");
> >  	printf("  --hot-plug: enable hot plug for device.\n");
> > @@ -667,6 +668,7 @@ launch_args_parse(int argc, char** argv)
> >  		{ "rxfreet",                    1, 0, 0 },
> >  		{ "no-flush-rx",	0, 0, 0 },
> >  		{ "flow-isolate-all",	        0, 0, 0 },
> > +		{ "disable-flow-flush",         0, 0, 0 },
> >  		{ "rxoffs",			1, 0, 0 },
> >  		{ "rxpkts",			1, 0, 0 },
> >  		{ "rxhdrs",			1, 0, 0 },
> > @@ -1330,6 +1332,8 @@ launch_args_parse(int argc, char** argv)
> >  				rmv_interrupt = 0;
> >  			if (!strcmp(lgopts[opt_idx].name, "flow-isolate-all"))
> >  				flow_isolate_all = 1;
> > +			if (!strcmp(lgopts[opt_idx].name, "disable-flow-
> flush"))
> > +				no_flow_flush = 1;
> >  			if (!strcmp(lgopts[opt_idx].name, "tx-offloads")) {
> >  				char *end = NULL;
> >  				n = strtoull(optarg, &end, 16);
> > diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
> > index 134d79a555..ea78f8982d 100644
> > --- a/app/test-pmd/testpmd.c
> > +++ b/app/test-pmd/testpmd.c
> > @@ -383,6 +383,11 @@ uint8_t no_flush_rx = 0; /* flush by default */
> >   */
> >  uint8_t flow_isolate_all;
> >
> > +/*
> > + * Disable port flow flush when stop port.
> > + */
> > +uint8_t no_flow_flush = 0; /* do flow flush by default */
> > +
> >  /*
> >   * Avoids to check link status when starting/stopping a port.
> >   */
> > @@ -3246,7 +3251,7 @@ stop_port(portid_t pid)
> >  			}
> >  		}
> >
> > -		if (port->flow_list)
> > +		if (port->flow_list && !no_flow_flush)
> >  			port_flow_flush(pi);
> >
> >  		ret = eth_dev_stop_mp(pi);
> > diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h
> > index 7d24d25970..ab4733522d 100644
> > --- a/app/test-pmd/testpmd.h
> > +++ b/app/test-pmd/testpmd.h
> > @@ -476,6 +476,7 @@ extern uint8_t  numa_support; /**< set by "--
> numa" parameter */
> >  extern uint16_t port_topology; /**< set by "--port-topology" parameter
> */
> >  extern uint8_t no_flush_rx; /**<set by "--no-flush-rx" parameter */
> >  extern uint8_t flow_isolate_all; /**< set by "--flow-isolate-all */
> > +extern uint8_t no_flow_flush; /**< set by "--disable-flow-flush"
> parameter */
> >  extern uint8_t  mp_alloc_type;
> >  /**< set by "--mp-anon" or "--mp-alloc" parameter */
> >  extern uint32_t eth_link_speed;
> > diff --git a/doc/guides/testpmd_app_ug/run_app.rst
> b/doc/guides/testpmd_app_ug/run_app.rst
> > index 074f910fc9..3ec3d4f5e6 100644
> > --- a/doc/guides/testpmd_app_ug/run_app.rst
> > +++ b/doc/guides/testpmd_app_ug/run_app.rst
> > @@ -436,6 +436,11 @@ The command line options are:
> >
> >      Ports that do not support this mode are automatically discarded.
> >
> > +*   ``--disable-flow-flush``
> > +
> > +    Disable port flow flush when stop port. This allows testing keep flow
> rules
> > +    or shared flow objects across restart.
> > +
> >  *   ``--tx-offloads=0xXXXXXXXX``
> >
> >      Set the hexadecimal bitmask of TX queue offloads.

Acked-by: Ori Kam <orika at nvidia.com>
Best,
Ori