Re: [spp] [spp 03664] Re: [PATCH v2 1/6] shared: add dev_attach_by_devargs

[Hideyuki Yamashita <yamashita.hideyuki@po.ntt-tx.co.jp>]

Hello Yasufumi-san,

Thanks for your following comments on 4 patches in my patch set.
https://mails.dpdk.org/archives/spp/2018-November/000959.html
https://mails.dpdk.org/archives/spp/2018-November/000960.html
https://mails.dpdk.org/archives/spp/2018-November/000961.html
https://mails.dpdk.org/archives/spp/2018-November/000962.html
(It is odd that only one mail received to me.)

Anyway, I applogize my mistakes on those.
Of cource solution you indicated in above comments are agreeable 
from my side.

It is welcome that you kindly provide updated patch set.
I think it is faster and more reliable.

Thanks and BR,
Hideyuki Yamashita
NTT TechnoCross

> > SPP uses deprecated APIs removed in DPDK v18.11. Using rte_eth_hotplug_add()
> > is recommended instead of rte_eth_dev_attach()[1]. This patch is to add
> > dev_attach_by_devargs() to shared directory so that spp_primary, spp_nfv,
> > spp_vm and spp_vf can refer this new function.
> Hideyuki,
> 
> The number of characters per line should be less than 72. It exceeds the limitation in 1st and 3rd lines.
> 
> Thanks
> >
> > [1]https://mails.dpdk.org/archives/dev/2018-October/117115.html
> >
> > Signed-off-by: Hideyuki Yamashita <yamashita.hideyuki@po.ntt-tx.co.jp>
> > Signed-off-by: Naoki Takada <takada.naoki@lab.ntt.co.jp>
> > ---
> >   src/shared/common.c | 26 ++++++++++++++++++++++++++
> >   src/shared/common.h | 17 +++++++++++++++++
> >   2 files changed, 43 insertions(+)
> >
> > diff --git a/src/shared/common.c b/src/shared/common.c
> > index f1754db..c88ce14 100644
> > --- a/src/shared/common.c
> > +++ b/src/shared/common.c
> > @@ -500,3 +500,29 @@ append_patch_info_json(char *str,
> >  >   	return 0;
> >   }
> > +
> > +/* attach the new device, then store port_id of the device */
> > +int
> > +dev_attach_by_devargs(const char *devargs, uint16_t *port_id)
> > +{
> > +	int ret = -1;
> > +	struct rte_devargs da;
> > +
> > +	memset(&da, 0, sizeof(da));
> > +
> > +	/* parse devargs */
> > +	if (rte_devargs_parse(&da, devargs))
> > +		return -1;
> > +
> > +	ret = rte_eal_hotplug_add(da.bus->name, da.name, da.args);
> > +	if (ret < 0) {
> > +		free(da.args);
> > +		return ret;
> > +	}
> > +
> > +	ret = rte_eth_dev_get_port_by_name(da.name, port_id);
> > +
> > +	free(da.args);
> > +
> > +	return ret;
> > +}
> > diff --git a/src/shared/common.h b/src/shared/common.h
> > index a5395aa..60514e5 100644
> > --- a/src/shared/common.h
> > +++ b/src/shared/common.h
> > @@ -18,7 +18,9 @@
> >   #include <rte_common.h>
> >   #include <rte_config.h>
> >   #include <rte_eal.h>
> > +#include <rte_devargs.h>
> >   #include <rte_ethdev.h>
> > +#include <rte_ethdev_driver.h>
> >   #include <rte_launch.h>
> >   #include <rte_lcore.h>
> >   #include <rte_log.h>
> > @@ -217,4 +219,19 @@ int spp_atoi(const char *str, int *val);
> >  >   #define RTE_LOGTYPE_APP RTE_LOGTYPE_USER1
> >  > +/**
> > + * Attach a new Ethernet device specified by arguments.
> > + *
> > + * @param devargs
> > + *  A pointer to a strings array describing the new device
> > + *  to be attached. The strings should be a pci address like
> > + *  '0000:01:00.0' or virtual device name like 'net_pcap0'.
> > + * @param port_id
> > + *  A pointer to a port identifier actually attached.
> > + * @return
> > + *  0 on success and port_id is filled, negative on error
> > + */
> > +int
> > +dev_attach_by_devargs(const char *devargs, uint16_t *port_id);
> > +
> >   #endif
> >