On Mon, Dec 05, 2016 at 03:42:18PM +0530, Shreyansh Jain wrote:
> Hello Jerin,
Hello Shreyansh,
>
> On Sunday 04 December 2016 02:25 AM, Jerin Jacob wrote:
> > rte_eal_dev_init() is a misleading name.
> > It actually performs the driver->probe for vdev,
> > which is parallel to rte_eal_pci_probe.
> >
> > Changed to rte_eal_vdev_probe for consistency and
> > moved the vdev specific probe to eal_common_vdev.c
> >
> > Suggested-by: Shreyansh Jain <shreyansh.j...@nxp.com>
> > Signed-off-by: Jerin Jacob <jerin.ja...@caviumnetworks.com>
> > ---
> > +int
> > +rte_eal_vdev_probe(void)
> > +{
> > + struct rte_devargs *devargs;
> > +
> > + /*
> > + * Note that the dev_driver_list is populated here
> > + * from calls made to rte_eal_driver_register from constructor functions
> > + * embedded into PMD modules via the RTE_PMD_REGISTER_VDEV macro
> > + */
> > +
> > + /* call the init function for each virtual device */
> > + TAILQ_FOREACH(devargs, &devargs_list, next) {
> > +
> > + if (devargs->type != RTE_DEVTYPE_VIRTUAL)
> > + continue;
> > +
> > + if (rte_eal_vdev_init(devargs->virt.drv_name,
>
> The situation now is:
> rte_eal_init=>rte_eal_vdev_probe()=>rte_eal_vdev_init()=> driver->probe()
>
> Even though I had suggested this, my intention was to completely do away
> with rte_*_[v]dev_init as it is misleading.
>
> rte_eal_init=>rte_eal_vdev_probe=>driver->probe()
IMO, We don't need to remove rte_eal_vdev_init() as it is an
application API that uses to create vdev driver instance.Moreover,
change and removing that name will result in ABI breakage.
grep -ri "rte_eal_vdev_init" app/
app/test/test_cryptodev.c: ret = rte_eal_vdev_init(
app/test/test_cryptodev.c: TEST_ASSERT_SUCCESS(rte_eal_vdev_init(
app/test/test_cryptodev.c: TEST_ASSERT_SUCCESS(rte_eal_vdev_init(
app/test/test_cryptodev.c: TEST_ASSERT_SUCCESS(rte_eal_vdev_init(
app/test/test_cryptodev.c: TEST_ASSERT_SUCCESS(rte_eal_vdev_init(
app/test/test_cryptodev.c: int dev_id = rte_eal_vdev_init(
app/test/test_cryptodev.c: ret = rte_eal_vdev_init(
app/test/test_cryptodev_perf.c: ret = rte_eal_vdev_init(
app/test/test_cryptodev_perf.c: ret = rte_eal_vdev_init(
app/test/test_cryptodev_perf.c: ret = rte_eal_vdev_init(
app/test/test_cryptodev_perf.c: ret = rte_eal_vdev_init(
>
> should be the ideal order, IMO.
> Apologies, I was not completely clear then.
>
> > + devargs->args)) {
> > + RTE_LOG(ERR, EAL, "failed to initialize %s device\n",
> > + devargs->virt.drv_name);
> > + return -1;
> > + }
> > + }
> > +
> > + return 0;
> > +}
> > diff --git a/lib/librte_eal/common/include/rte_dev.h
> > b/lib/librte_eal/common/include/rte_dev.h
> > index 8840380..146f505 100644
> > --- a/lib/librte_eal/common/include/rte_dev.h
> > +++ b/lib/librte_eal/common/include/rte_dev.h
> > @@ -171,9 +171,9 @@ void rte_eal_driver_register(struct rte_driver *driver);
> > void rte_eal_driver_unregister(struct rte_driver *driver);
> >
> > /**
> > - * Initalize all the registered drivers in this process
> > + * Probe all the registered vdev drivers in this process
> > */
> > -int rte_eal_dev_init(void);
> > +int rte_eal_vdev_probe(void);
> >
> > /**
> > * Initialize a driver specified by name.
> > diff --git a/lib/librte_eal/linuxapp/eal/eal.c
> > b/lib/librte_eal/linuxapp/eal/eal.c
> > index 16dd5b9..faf75cf 100644
> > --- a/lib/librte_eal/linuxapp/eal/eal.c
> > +++ b/lib/librte_eal/linuxapp/eal/eal.c
> > @@ -884,8 +884,8 @@ rte_eal_init(int argc, char **argv)
> > if (rte_eal_pci_probe())
> > rte_panic("Cannot probe PCI\n");
> >
> > - if (rte_eal_dev_init() < 0)
> > - rte_panic("Cannot init pmd devices\n");
> > + if (rte_eal_vdev_probe() < 0)
> > + rte_panic("Cannot probe vdev drivers\n");
> >
> > rte_eal_mcfg_complete();
> >
> > diff --git a/lib/librte_eal/linuxapp/eal/rte_eal_version.map
> > b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
> > index 83721ba..67fc95b 100644
> > --- a/lib/librte_eal/linuxapp/eal/rte_eal_version.map
> > +++ b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
> > @@ -22,7 +22,7 @@ DPDK_2.0 {
> > rte_dump_tailq;
> > rte_eal_alarm_cancel;
> > rte_eal_alarm_set;
> > - rte_eal_dev_init;
> > + rte_eal_vdev_probe;
> > rte_eal_devargs_add;
> > rte_eal_devargs_dump;
> > rte_eal_devargs_type_count;
> >
>
