I made this API private, however we can see the bonding PMD could use this kind of facility:
http://dpdk.org/ml/archives/dev/2017-July/070087.html I know the failsafe could leverage this, as well as another bus idea I threw together a few weeks ago[1]. So maybe I should make it public? This can always be fixed past-integration though, and I'd prefer being able to go forward on the PCI move. [1]: http://dpdk.org/ml/archives/dev/2017-June/067546.html On Tue, Jul 04, 2017 at 02:58:32AM +0200, Gaetan Rivet wrote: > Find which bus should be able to parse this device name into an internal > device representation. > > Signed-off-by: Gaetan Rivet <gaetan.ri...@6wind.com> > --- > lib/librte_eal/common/eal_common_bus.c | 15 +++++++++++++++ > lib/librte_eal/common/eal_private.h | 12 ++++++++++++ > 2 files changed, 27 insertions(+) > > diff --git a/lib/librte_eal/common/eal_common_bus.c > b/lib/librte_eal/common/eal_common_bus.c > index 87b0c6e..b143f21 100644 > --- a/lib/librte_eal/common/eal_common_bus.c > +++ b/lib/librte_eal/common/eal_common_bus.c > @@ -204,3 +204,18 @@ rte_bus_find_by_name(const char *busname) > { > return rte_bus_find(NULL, cmp_bus_name, (const void *)busname); > } > + > +static int > +bus_can_parse(const struct rte_bus *bus, const void *_name) > +{ > + const char *name = _name; > + > + return !(bus->parse && bus->parse(name, NULL) == 0); > +} > + > +/* find a bus capable of parsing a device description */ > +struct rte_bus * > +rte_bus_find_by_device_name(const char *str) > +{ > + return rte_bus_find(NULL, bus_can_parse, str); > +} > diff --git a/lib/librte_eal/common/eal_private.h > b/lib/librte_eal/common/eal_private.h > index 6cacce0..0836339 100644 > --- a/lib/librte_eal/common/eal_private.h > +++ b/lib/librte_eal/common/eal_private.h > @@ -338,4 +338,16 @@ int rte_eal_hugepage_attach(void); > */ > bool rte_eal_using_phys_addrs(void); > > +/** > + * Find a bus capable of identifying a device. > + * > + * @param str > + * A device identifier (PCI address, virtual PMD name, ...). > + * > + * @return > + * A valid bus handle if found. > + * NULL if no bus is able to parse this device. > + */ > +struct rte_bus *rte_bus_find_by_device_name(const char *str); > + > #endif /* _EAL_PRIVATE_H_ */ > -- > 2.1.4 > -- Gaëtan Rivet 6WIND
