[dpdk-dev] [PATCH] eventdev: flag to identify same destined packets enqueue
Nipun Gupta
nipun.gupta at nxp.com
Tue Oct 1 17:15:59 CEST 2019
> -----Original Message-----
> From: Aaron Conole <aconole at redhat.com>
> Sent: Tuesday, October 1, 2019 8:12 PM
> To: Nipun Gupta <nipun.gupta at nxp.com>
> Cc: dev at dpdk.org; jerinj at marvell.com; pbhagavatula at marvell.com;
> skori at marvell.com; Hemant Agrawal <hemant.agrawal at nxp.com>;
> bruce.richardson at intel.com; marko.kovacevic at intel.com;
> orika at mellanox.com; radu.nicolau at intel.com; tomasz.kantecki at intel.com;
> harry.van.haaren at intel.com; nikhil.rao at intel.com
> Subject: Re: [dpdk-dev] [PATCH] eventdev: flag to identify same destined
> packets enqueue
>
> Nipun Gupta <nipun.gupta at nxp.com> writes:
>
> > This patch introduces a `flag` in the Eth TX adapter enqueue API.
> > Some drivers may support burst functionality only with the packets
> > having same destination device and queue.
> >
> > The flag `RTE_EVENT_ETH_TX_ADAPTER_ENQUEUE_SAME_DEST` can be
> used
> > to indicate this so the underlying driver, for drivers to utilize
> > burst functionality appropriately.
> >
> > Signed-off-by: Nipun Gupta <nipun.gupta at nxp.com>
> > ---
>
> In addition to the ABI concerns (which I mirror), you also should
> compile test this patch. It currently doesn't build (for example, see a
> missed adapter_enqueue in
> examples/eventdev_pipeline/pipeline_worker_tx.c)
Thanks for letting me know. I missed compiling the example. Will fix in v2.
w.r.t. the ABI change, as API will freeze for 1 year post this we expect to get some
exception to deprecation process for 19.11.
>
> > app/test-eventdev/test_pipeline_common.h | 6 +++---
> > .../prog_guide/event_ethernet_tx_adapter.rst | 3 ++-
> > drivers/event/octeontx/ssovf_evdev.h | 2 +-
> > drivers/event/octeontx/ssovf_worker.c | 3 ++-
> > drivers/event/octeontx2/otx2_evdev.h | 12 ++++++++----
> > drivers/event/octeontx2/otx2_worker.c | 8 ++++++--
> > drivers/event/octeontx2/otx2_worker_dual.c | 8 ++++++--
> > lib/librte_eventdev/rte_event_eth_tx_adapter.h | 15 +++++++++++++-
> -
> > lib/librte_eventdev/rte_eventdev.c | 3 ++-
> > lib/librte_eventdev/rte_eventdev.h | 2 +-
> > 10 files changed, 44 insertions(+), 18 deletions(-)
> >
> > diff --git a/app/test-eventdev/test_pipeline_common.h b/app/test-
> eventdev/test_pipeline_common.h
> > index 0440b9e29..6e73c6ab2 100644
> > --- a/app/test-eventdev/test_pipeline_common.h
> > +++ b/app/test-eventdev/test_pipeline_common.h
> > @@ -106,7 +106,7 @@ pipeline_event_tx(const uint8_t dev, const uint8_t
> port,
> > struct rte_event * const ev)
> > {
> > rte_event_eth_tx_adapter_txq_set(ev->mbuf, 0);
> > - while (!rte_event_eth_tx_adapter_enqueue(dev, port, ev, 1))
> > + while (!rte_event_eth_tx_adapter_enqueue(dev, port, ev, 1, 0))
> > rte_pause();
> > }
> >
> > @@ -116,10 +116,10 @@ pipeline_event_tx_burst(const uint8_t dev, const
> uint8_t port,
> > {
> > uint16_t enq;
> >
> > - enq = rte_event_eth_tx_adapter_enqueue(dev, port, ev, nb_rx);
> > + enq = rte_event_eth_tx_adapter_enqueue(dev, port, ev, nb_rx, 0);
> > while (enq < nb_rx) {
> > enq += rte_event_eth_tx_adapter_enqueue(dev, port,
> > - ev + enq, nb_rx - enq);
> > + ev + enq, nb_rx - enq, 0);
> > }
> > }
> >
> > diff --git a/doc/guides/prog_guide/event_ethernet_tx_adapter.rst
> b/doc/guides/prog_guide/event_ethernet_tx_adapter.rst
> > index 192f9e1cf..a8c13e136 100644
> > --- a/doc/guides/prog_guide/event_ethernet_tx_adapter.rst
> > +++ b/doc/guides/prog_guide/event_ethernet_tx_adapter.rst
> > @@ -137,11 +137,12 @@ should use the ``rte_event_enqueue_burst()``
> function.
> > if (cap & RTE_EVENT_ETH_TX_ADAPTER_CAP_INTERNAL_PORT) {
> >
> > event.mbuf = m;
> > + eq_flags = 0;
> >
> > m->port = tx_port;
> > rte_event_eth_tx_adapter_txq_set(m, tx_queue_id);
> >
> > - rte_event_eth_tx_adapter_enqueue(dev_id, ev_port,
> &event, 1);
> > + rte_event_eth_tx_adapter_enqueue(dev_id, ev_port,
> &event, 1, eq_flags);
> > } else {
> >
> > event.queue_id = qid; /* event queue linked to adapter port
> */
> > diff --git a/drivers/event/octeontx/ssovf_evdev.h
> b/drivers/event/octeontx/ssovf_evdev.h
> > index 0e622152c..1b156edab 100644
> > --- a/drivers/event/octeontx/ssovf_evdev.h
> > +++ b/drivers/event/octeontx/ssovf_evdev.h
> > @@ -181,7 +181,7 @@ void ssows_flush_events(struct ssows *ws, uint8_t
> queue_id,
> > ssows_handle_event_t fn, void *arg);
> > void ssows_reset(struct ssows *ws);
> > uint16_t sso_event_tx_adapter_enqueue(void *port,
> > - struct rte_event ev[], uint16_t nb_events);
> > + struct rte_event ev[], uint16_t nb_events, uint8_t eq_flags);
> > int ssovf_info(struct ssovf_info *info);
> > void *ssovf_bar(enum ssovf_type, uint8_t id, uint8_t bar);
> > int test_eventdev_octeontx(void);
> > diff --git a/drivers/event/octeontx/ssovf_worker.c
> b/drivers/event/octeontx/ssovf_worker.c
> > index d940b5dd6..1d0467af3 100644
> > --- a/drivers/event/octeontx/ssovf_worker.c
> > +++ b/drivers/event/octeontx/ssovf_worker.c
> > @@ -264,7 +264,7 @@ ssows_reset(struct ssows *ws)
> >
> > uint16_t
> > sso_event_tx_adapter_enqueue(void *port,
> > - struct rte_event ev[], uint16_t nb_events)
> > + struct rte_event ev[], uint16_t nb_events, uint8_t eq_flags)
> > {
> > uint16_t port_id;
> > uint16_t queue_id;
> > @@ -275,6 +275,7 @@ sso_event_tx_adapter_enqueue(void *port,
> > octeontx_dq_t *dq;
> >
> > RTE_SET_USED(nb_events);
> > + RTE_SET_USED(eq_flags);
> > switch (ev->sched_type) {
> > case SSO_SYNC_ORDERED:
> > ssows_swtag_norm(ws, ev->event, SSO_SYNC_ATOMIC);
> > diff --git a/drivers/event/octeontx2/otx2_evdev.h
> b/drivers/event/octeontx2/otx2_evdev.h
> > index 5cd80e3b2..74b749a15 100644
> > --- a/drivers/event/octeontx2/otx2_evdev.h
> > +++ b/drivers/event/octeontx2/otx2_evdev.h
> > @@ -333,16 +333,20 @@ SSO_RX_ADPTR_ENQ_FASTPATH_FUNC
> >
> > #define T(name, f4, f3, f2, f1, f0, sz, flags) \
> > uint16_t otx2_ssogws_tx_adptr_enq_ ## name(void *port, struct
> rte_event ev[],\
> > - uint16_t nb_events); \
> > + uint16_t nb_events, \
> > + uint8_t eq_flags); \
> > uint16_t otx2_ssogws_tx_adptr_enq_seg_ ## name(void *port,
> \
> > struct rte_event ev[], \
> > - uint16_t nb_events); \
> > + uint16_t nb_events, \
> > + uint8_t eq_flags); \
> > uint16_t otx2_ssogws_dual_tx_adptr_enq_ ## name(void *port,
> \
> > struct rte_event ev[], \
> > - uint16_t nb_events); \
> > + uint16_t nb_events, \
> > + uint8_t eq_flags); \
> > uint16_t otx2_ssogws_dual_tx_adptr_enq_seg_ ## name(void *port,
> \
> > struct rte_event ev[], \
> > - uint16_t nb_events); \
> > + uint16_t nb_events, \
> > + uint8_t eq_flags); \
> >
> > SSO_TX_ADPTR_ENQ_FASTPATH_FUNC
> > #undef T
> > diff --git a/drivers/event/octeontx2/otx2_worker.c
> b/drivers/event/octeontx2/otx2_worker.c
> > index cd14cd3d2..100e21669 100644
> > --- a/drivers/event/octeontx2/otx2_worker.c
> > +++ b/drivers/event/octeontx2/otx2_worker.c
> > @@ -270,12 +270,14 @@ otx2_ssogws_enq_fwd_burst(void *port, const
> struct rte_event ev[],
> > #define T(name, f4, f3, f2, f1, f0, sz, flags) \
> > uint16_t __hot
> \
> > otx2_ssogws_tx_adptr_enq_ ## name(void *port, struct rte_event ev[],
> \
> > - uint16_t nb_events) \
> > + uint16_t nb_events, \
> > + uint8_t eq_flags) \
> > { \
> > struct otx2_ssogws *ws = port; \
> > uint64_t cmd[sz]; \
> > \
> > RTE_SET_USED(nb_events); \
> > + RTE_SET_USED(eq_flags);
> \
> > return otx2_ssogws_event_tx(ws, ev, cmd, flags); \
> > }
> > SSO_TX_ADPTR_ENQ_FASTPATH_FUNC
> > @@ -284,12 +286,14 @@ SSO_TX_ADPTR_ENQ_FASTPATH_FUNC
> > #define T(name, f4, f3, f2, f1, f0, sz, flags) \
> > uint16_t __hot
> \
> > otx2_ssogws_tx_adptr_enq_seg_ ## name(void *port, struct rte_event
> ev[],\
> > - uint16_t nb_events) \
> > + uint16_t nb_events, \
> > + uint8_t eq_flags) \
> > { \
> > struct otx2_ssogws *ws = port; \
> > uint64_t cmd[(sz) + NIX_TX_MSEG_SG_DWORDS - 2];
> \
> > \
> > RTE_SET_USED(nb_events); \
> > + RTE_SET_USED(eq_flags);
> \
> > return otx2_ssogws_event_tx(ws, ev, cmd, (flags) | \
> > NIX_TX_MULTI_SEG_F); \
> > }
> > diff --git a/drivers/event/octeontx2/otx2_worker_dual.c
> b/drivers/event/octeontx2/otx2_worker_dual.c
> > index 37c274a54..c3e48da42 100644
> > --- a/drivers/event/octeontx2/otx2_worker_dual.c
> > +++ b/drivers/event/octeontx2/otx2_worker_dual.c
> > @@ -310,7 +310,8 @@ SSO_RX_ADPTR_ENQ_FASTPATH_FUNC
> > uint16_t __hot
> \
> > otx2_ssogws_dual_tx_adptr_enq_ ## name(void *port,
> \
> > struct rte_event ev[], \
> > - uint16_t nb_events) \
> > + uint16_t nb_events, \
> > + uint8_t eq_flags) \
> > { \
> > struct otx2_ssogws_dual *ws = port; \
> > struct otx2_ssogws *vws = \
> > @@ -318,6 +319,7 @@ otx2_ssogws_dual_tx_adptr_enq_ ## name(void
> *port, \
> > uint64_t cmd[sz]; \
> > \
> > RTE_SET_USED(nb_events); \
> > + RTE_SET_USED(eq_flags);
> \
> > return otx2_ssogws_event_tx(vws, ev, cmd, flags); \
> > }
> > SSO_TX_ADPTR_ENQ_FASTPATH_FUNC
> > @@ -327,7 +329,8 @@ SSO_TX_ADPTR_ENQ_FASTPATH_FUNC
> > uint16_t __hot
> \
> > otx2_ssogws_dual_tx_adptr_enq_seg_ ## name(void *port,
> \
> > struct rte_event ev[], \
> > - uint16_t nb_events) \
> > + uint16_t nb_events, \
> > + uint8_t eq_flags) \
> > { \
> > struct otx2_ssogws_dual *ws = port; \
> > struct otx2_ssogws *vws = \
> > @@ -335,6 +338,7 @@ otx2_ssogws_dual_tx_adptr_enq_seg_ ##
> name(void *port, \
> > uint64_t cmd[(sz) + NIX_TX_MSEG_SG_DWORDS - 2];
> \
> > \
> > RTE_SET_USED(nb_events); \
> > + RTE_SET_USED(eq_flags);
> \
> > return otx2_ssogws_event_tx(vws, ev, cmd, (flags) | \
> > NIX_TX_MULTI_SEG_F); \
> > }
> > diff --git a/lib/librte_eventdev/rte_event_eth_tx_adapter.h
> b/lib/librte_eventdev/rte_event_eth_tx_adapter.h
> > index c848261c4..98be77568 100644
> > --- a/lib/librte_eventdev/rte_event_eth_tx_adapter.h
> > +++ b/lib/librte_eventdev/rte_event_eth_tx_adapter.h
> > @@ -300,6 +300,11 @@ rte_event_eth_tx_adapter_txq_get(struct
> rte_mbuf *pkt)
> > int
> > rte_event_eth_tx_adapter_event_port_get(uint8_t id, uint8_t
> *event_port_id);
> >
> > +#define RTE_EVENT_ETH_TX_ADAPTER_ENQUEUE_SAME_DEST 0x1
> > +/**< This flag is used when all the packets enqueued in the tx adapter are
> > + * destined for the same Ethernet device, queue pair.
> > + */
> > +
> > /**
> > * Enqueue a burst of events objects or an event object supplied in
> *rte_event*
> > * structure on an event device designated by its *dev_id* through the
> event
> > @@ -324,6 +329,10 @@
> rte_event_eth_tx_adapter_event_port_get(uint8_t id, uint8_t
> *event_port_id);
> > * The number of event objects to enqueue, typically number of
> > * rte_event_port_attr_get(...RTE_EVENT_PORT_ATTR_ENQ_DEPTH...)
> > * available for this port.
> > + * @param flags
> > + * See RTE_EVENT_ETH_TX_ADAPTER_ENQUEUE_ flags.
> > + * #RTE_EVENT_ETH_TX_ADAPTER_ENQUEUE_SAME_DEST signifies that
> all the packets
> > + * which are enqueued are destined for the same Ethernet device, queue
> pair.
> > *
> > * @return
> > * The number of event objects actually enqueued on the event device.
> The
> > @@ -343,7 +352,8 @@ static inline uint16_t
> > rte_event_eth_tx_adapter_enqueue(uint8_t dev_id,
> > uint8_t port_id,
> > struct rte_event ev[],
> > - uint16_t nb_events)
> > + uint16_t nb_events,
> > + uint8_t flags)
> > {
> > const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
> >
> > @@ -359,7 +369,8 @@ rte_event_eth_tx_adapter_enqueue(uint8_t
> dev_id,
> > return 0;
> > }
> > #endif
> > - return dev->txa_enqueue(dev->data->ports[port_id], ev,
> nb_events);
> > + return dev->txa_enqueue(dev->data->ports[port_id], ev,
> > + nb_events, flags);
> > }
> >
> > /**
> > diff --git a/lib/librte_eventdev/rte_eventdev.c
> b/lib/librte_eventdev/rte_eventdev.c
> > index f44c869cb..3bf9d7115 100644
> > --- a/lib/librte_eventdev/rte_eventdev.c
> > +++ b/lib/librte_eventdev/rte_eventdev.c
> > @@ -1324,7 +1324,8 @@ rte_eventdev_find_free_device_index(void)
> > static uint16_t
> > rte_event_tx_adapter_enqueue(__rte_unused void *port,
> > __rte_unused struct rte_event ev[],
> > - __rte_unused uint16_t nb_events)
> > + __rte_unused uint16_t nb_events,
> > + __rte_unused uint8_t flags)
> > {
> > rte_errno = ENOTSUP;
> > return 0;
> > diff --git a/lib/librte_eventdev/rte_eventdev.h
> b/lib/librte_eventdev/rte_eventdev.h
> > index 5044a13d0..2a5643da3 100644
> > --- a/lib/librte_eventdev/rte_eventdev.h
> > +++ b/lib/librte_eventdev/rte_eventdev.h
> > @@ -1227,7 +1227,7 @@ typedef uint16_t
> (*event_dequeue_burst_t)(void *port, struct rte_event ev[],
> > /**< @internal Dequeue burst of events from port of a device */
> >
> > typedef uint16_t (*event_tx_adapter_enqueue)(void *port,
> > - struct rte_event ev[], uint16_t nb_events);
> > + struct rte_event ev[], uint16_t nb_events, uint8_t flags);
> > /**< @internal Enqueue burst of events on port of a device */
> >
> > #define RTE_EVENTDEV_NAME_MAX_LEN (64)
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