[PATCH v7] app/test: secondary process passes allow parameters

[Ye, MingjinX]

Hi, 

Thanks for the ack. would like to change the state of the patch, which will be merged into the dpdk.

Change: The "--allow" parameter is added when the number of allow is greater than zero.

Thanks,
Mingjin

> -----Original Message-----
> From: Richardson, Bruce <bruce.richardson at intel.com>
> Sent: Friday, November 17, 2023 7:17 PM
> To: Ye, MingjinX <mingjinx.ye at intel.com>
> Cc: dev at dpdk.org; Yang, Qiming <qiming.yang at intel.com>;
> stable at dpdk.org; Xu, HailinX <hailinx.xu at intel.com>
> Subject: Re: [PATCH v7] app/test: secondary process passes allow
> parameters
> 
> On Fri, Nov 17, 2023 at 10:24:41AM +0000, Ye, MingjinX wrote:
> > Hi Richardson,
> >
> > can you please take a look at this patch.
> >
> > Thanks,
> > Mingjin
> >
> 
> Hi,
> 
> I acked v6. If nothing major has changed in the patch, then the ack can be
> kept for v7. If there is something that has changed that you think I should
> look at, please include it in the change-log, so I can check it out.
> 
> For now, assuming no major changes:
> 
> Acked-by: Bruce Richardson <bruce.richardson at intel.com>
> 
> /Bruce
> 
> >
> > > -----Original Message-----
> > > From: Ye, MingjinX <mingjinx.ye at intel.com>
> > > Sent: Tuesday, November 14, 2023 6:28 PM
> > > To: dev at dpdk.org
> > > Cc: Yang, Qiming <qiming.yang at intel.com>; Ye, MingjinX
> > > <mingjinx.ye at intel.com>; stable at dpdk.org
> > > Subject: [PATCH v7] app/test: secondary process passes allow
> > > parameters
> > >
> > > In EAL related test cases, the allow parameters are not passed to
> > > the secondary process, resulting in unexpected NICs being loaded.
> > >
> > > This patch fixes this issue by appending the allow parameters to the
> > > secondary process.
> > >
> > > Fixes: af75078fece3 ("first public release")
> > > Cc: stable at dpdk.org
> > >
> > > Signed-off-by: Mingjin Ye <mingjinx.ye at intel.com>
> > > ---
> > > v5: Optimized.
> > > ---
> > > v6: Optimized.
> > > ---
> > > v7: Fix CI errors.
> > > ---
> > >  app/test/process.h | 46
> > > ++++++++++++++++++++++++++++++++++++++++++----
> > >  1 file changed, 42 insertions(+), 4 deletions(-)
> > >
> > > diff --git a/app/test/process.h b/app/test/process.h index
> > > af7bc3e0de..06b2f8b192 100644
> > > --- a/app/test/process.h
> > > +++ b/app/test/process.h
> > > @@ -17,6 +17,7 @@
> > >  #include <dirent.h>
> > >
> > >  #include <rte_string_fns.h> /* strlcpy */
> > > +#include <rte_devargs.h>
> > >
> > >  #ifdef RTE_EXEC_ENV_FREEBSD
> > >  #define self "curproc"
> > > @@ -34,6 +35,34 @@ extern uint16_t flag_for_send_pkts;  #endif
> > > #endif
> > >
> > > +#define PREFIX_ALLOW "--allow="
> > > +
> > > +static int
> > > +add_parameter_allow(char **argv, int max_capacity) {
> > > +	struct rte_devargs *devargs;
> > > +	int count = 0;
> > > +
> > > +	RTE_EAL_DEVARGS_FOREACH(NULL, devargs) {
> > > +		if (strlen(devargs->name) == 0)
> > > +			continue;
> > > +
> > > +		if (devargs->data == NULL || strlen(devargs->data) == 0) {
> > > +			if (asprintf(&argv[count], PREFIX_ALLOW"%s",
> > > devargs->name) < 0)
> > > +				break;
> > > +		} else {
> > > +			if (asprintf(&argv[count], PREFIX_ALLOW"%s,%s",
> > > +					 devargs->name, devargs->data) < 0)
> > > +				break;
> > > +		}
> > > +
> > > +		if (++count == max_capacity)
> > > +			break;
> > > +	}
> > > +
> > > +	return count;
> > > +}
> > > +
> > >  /*
> > >   * launches a second copy of the test process using the given argv
> > > parameters,
> > >   * which should include argv[0] as the process name. To identify in
> > > the @@ -
> > > 43,8 +72,10 @@ extern uint16_t flag_for_send_pkts;  static inline
> > > int process_dup(const char *const argv[], int numargs, const char
> *env_value)  {
> > > -	int num;
> > > -	char *argv_cpy[numargs + 1];
> > > +	int num = 0;
> > > +	char **argv_cpy;
> > > +	int allow_num;
> > > +	int argv_num;
> > >  	int i, status;
> > >  	char path[32];
> > >  #ifdef RTE_LIB_PDUMP
> > > @@ -58,11 +89,18 @@ process_dup(const char *const argv[], int
> > > numargs, const char *env_value)
> > >  	if (pid < 0)
> > >  		return -1;
> > >  	else if (pid == 0) {
> > > +		allow_num =
> > > rte_devargs_type_count(RTE_DEVTYPE_ALLOWED);
> > > +		argv_num = numargs + allow_num + 1;
> > > +		argv_cpy = calloc(argv_num, sizeof(char *));
> > > +		if (!argv_cpy)
> > > +			rte_panic("Memory allocation failed\n");
> > > +
> > >  		/* make a copy of the arguments to be passed to exec */
> > >  		for (i = 0; i < numargs; i++)
> > >  			argv_cpy[i] = strdup(argv[i]);
> > > -		argv_cpy[i] = NULL;
> > > -		num = numargs;
> > > +		if (allow_num > 0)
> > > +			num = add_parameter_allow(&argv_cpy[i],
> > > allow_num);
> > > +		num += numargs;
> > >
> > >  #ifdef RTE_EXEC_ENV_LINUX
> > >  		{
> > > --
> > > 2.25.1
> >