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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: e4ea422d-e69c-4356-b92a-08d7904f22bd X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Jan 2020 13:16:25.4540 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: A5AUDIevf61WgTItVjHejx5VTpInv+WJA6x8CdhVLn6ak5nzICDy4492pco8wFSIsfirqhKo/GqRR+WLPN65I4vRLcsuKDWKVGDWkbRb5ZU= X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR11MB2638 X-OriginatorOrg: intel.com Subject: Re: [dpdk-dev] [PATCH v2 08/11] examples/l3fwd: add event lpm main loop X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" > Add lpm main loop for handling events based on capabilities of the > event device. >=20 > Signed-off-by: Pavan Nikhilesh > --- > examples/l3fwd/l3fwd.h | 9 ++ > examples/l3fwd/l3fwd_event.c | 9 ++ > examples/l3fwd/l3fwd_event.h | 5 + > examples/l3fwd/l3fwd_lpm.c | 231 +++++++++++++++++++++++++++++++++++ > examples/l3fwd/main.c | 10 +- > 5 files changed, 260 insertions(+), 4 deletions(-) >=20 > diff --git a/examples/l3fwd/l3fwd.h b/examples/l3fwd/l3fwd.h > index 6d16cde74..8f2e4be23 100644 > --- a/examples/l3fwd/l3fwd.h > +++ b/examples/l3fwd/l3fwd.h > @@ -212,6 +212,15 @@ em_main_loop(__attribute__((unused)) void *dummy); > int > lpm_main_loop(__attribute__((unused)) void *dummy); >=20 > +int > +lpm_event_main_loop_tx_d(__attribute__((unused)) void *dummy); > +int > +lpm_event_main_loop_tx_d_burst(__attribute__((unused)) void *dummy); > +int > +lpm_event_main_loop_tx_q(__attribute__((unused)) void *dummy); > +int > +lpm_event_main_loop_tx_q_burst(__attribute__((unused)) void *dummy); No need to add unused attribute in function declaration. BTW, if all event_loop_cb functions don't use parameter, why just not make them 'typedef int (*event_loop_cb)(void)'? > + > /* Return ipv4/ipv6 fwd lookup struct for LPM or EM. */ > void * > em_get_ipv4_l3fwd_lookup_struct(const int socketid); > diff --git a/examples/l3fwd/l3fwd_event.c b/examples/l3fwd/l3fwd_event.c > index 0e796f003..c7de046e3 100644 > --- a/examples/l3fwd/l3fwd_event.c > +++ b/examples/l3fwd/l3fwd_event.c > @@ -235,6 +235,12 @@ void > l3fwd_event_resource_setup(struct rte_eth_conf *port_conf) > { > struct l3fwd_event_resources *evt_rsrc =3D l3fwd_get_eventdev_rsrc(); > + const event_loop_cb lpm_event_loop[2][2] =3D { > + [0][0] =3D lpm_event_main_loop_tx_d, > + [0][1] =3D lpm_event_main_loop_tx_d_burst, > + [1][0] =3D lpm_event_main_loop_tx_q, > + [1][1] =3D lpm_event_main_loop_tx_q_burst, > + }; > uint32_t event_queue_cfg; > int ret; >=20 > @@ -268,4 +274,7 @@ l3fwd_event_resource_setup(struct rte_eth_conf *port_= conf) > ret =3D rte_event_dev_start(evt_rsrc->event_d_id); > if (ret < 0) > rte_exit(EXIT_FAILURE, "Error in starting eventdev"); > + > + evt_rsrc->ops.lpm_event_loop =3D lpm_event_loop[evt_rsrc->tx_mode_q] > + [evt_rsrc->has_burst]; > } > diff --git a/examples/l3fwd/l3fwd_event.h b/examples/l3fwd/l3fwd_event.h > index 9d8bd5a36..fcc0ce51a 100644 > --- a/examples/l3fwd/l3fwd_event.h > +++ b/examples/l3fwd/l3fwd_event.h > @@ -14,6 +14,11 @@ >=20 > #include "l3fwd.h" >=20 > +#define L3FWD_EVENT_SINGLE 0x1 > +#define L3FWD_EVENT_BURST 0x2 > +#define L3FWD_EVENT_TX_DIRECT 0x4 > +#define L3FWD_EVENT_TX_ENQ 0x8 > + > #define CMD_LINE_OPT_MODE "mode" > #define CMD_LINE_OPT_EVENTQ_SYNC "eventq-sched" >=20 > diff --git a/examples/l3fwd/l3fwd_lpm.c b/examples/l3fwd/l3fwd_lpm.c > index 349de2703..c4669d6d5 100644 > --- a/examples/l3fwd/l3fwd_lpm.c > +++ b/examples/l3fwd/l3fwd_lpm.c > @@ -28,6 +28,7 @@ > #include >=20 > #include "l3fwd.h" > +#include "l3fwd_event.h" >=20 > struct ipv4_l3fwd_lpm_route { > uint32_t ip; > @@ -254,6 +255,236 @@ lpm_main_loop(__attribute__((unused)) void *dummy) > return 0; > } >=20 > +static __rte_always_inline void > +lpm_event_loop_single(struct l3fwd_event_resources *evt_rsrc, > + const uint8_t flags) > +{ > + const int event_p_id =3D l3fwd_get_free_event_port(evt_rsrc); > + const uint8_t tx_q_id =3D evt_rsrc->evq.event_q_id[ > + evt_rsrc->evq.nb_queues - 1]; > + const uint8_t event_d_id =3D evt_rsrc->event_d_id; > + struct lcore_conf *lconf; > + unsigned int lcore_id; > + struct rte_event ev; > + > + if (event_p_id < 0) > + return; > + > + lcore_id =3D rte_lcore_id(); > + lconf =3D &lcore_conf[lcore_id]; > + > + RTE_LOG(INFO, L3FWD, "entering %s on lcore %u\n", __func__, lcore_id); > + while (!force_quit) { > + if (!rte_event_dequeue_burst(event_d_id, event_p_id, &ev, 1, 0)) > + continue; > + > + struct rte_mbuf *mbuf =3D ev.mbuf; > + mbuf->port =3D lpm_get_dst_port(lconf, mbuf, mbuf->port); > + > +#if defined RTE_ARCH_X86 || defined RTE_MACHINE_CPUFLAG_NEON \ > + || defined RTE_ARCH_PPC_64 > + process_packet(mbuf, &mbuf->port); > +#else > + > + struct rte_ether_hdr *eth_hdr =3D rte_pktmbuf_mtod(mbuf, > + struct rte_ether_hdr *); > +#ifdef DO_RFC_1812_CHECKS > + struct rte_ipv4_hdr *ipv4_hdr; > + if (RTE_ETH_IS_IPV4_HDR(mbuf->packet_type)) { > + /* Handle IPv4 headers.*/ > + ipv4_hdr =3D rte_pktmbuf_mtod_offset(mbuf, > + struct rte_ipv4_hdr *, > + sizeof(struct rte_ether_hdr)); > + > + if (is_valid_ipv4_pkt(ipv4_hdr, mbuf->pkt_len) > + < 0) { > + mbuf->port =3D BAD_PORT; > + continue; > + } > + /* Update time to live and header checksum */ > + --(ipv4_hdr->time_to_live); > + ++(ipv4_hdr->hdr_checksum); > + } > +#endif > + /* dst addr */ > + *(uint64_t *)ð_hdr->d_addr =3D dest_eth_addr[mbuf->port]; > + > + /* src addr */ > + rte_ether_addr_copy(&ports_eth_addr[mbuf->port], > + ð_hdr->s_addr); > +#endif The code snippet above looks pretty much the same as in l3fwd_lpm_simple_fo= rward() except missing IPv6 part. Same for loop_burst() below. Instead od duplicating the code in dozen places, can we put this common cod= e into a function and use it?=20 > + if (mbuf->port =3D=3D BAD_PORT) { > + rte_pktmbuf_free(mbuf); > + continue; > + } > + > + if (flags & L3FWD_EVENT_TX_ENQ) { > + ev.queue_id =3D tx_q_id; > + ev.op =3D RTE_EVENT_OP_FORWARD; > + while (rte_event_enqueue_burst(event_d_id, event_p_id, > + &ev, 1) && !force_quit) > + ; > + } > + > + if (flags & L3FWD_EVENT_TX_DIRECT) { > + rte_event_eth_tx_adapter_txq_set(mbuf, 0); > + while (!rte_event_eth_tx_adapter_enqueue(event_d_id, > + event_p_id, &ev, 1, 0) && > + !force_quit) > + ; > + } > + } > +} > + > +static __rte_always_inline void > +lpm_event_loop_burst(struct l3fwd_event_resources *evt_rsrc, > + const uint8_t flags) > +{ > + const int event_p_id =3D l3fwd_get_free_event_port(evt_rsrc); > + const uint8_t tx_q_id =3D evt_rsrc->evq.event_q_id[ > + evt_rsrc->evq.nb_queues - 1]; > + const uint8_t event_d_id =3D evt_rsrc->event_d_id; > + const uint16_t deq_len =3D evt_rsrc->deq_depth; > + struct rte_event events[MAX_PKT_BURST]; > + struct lcore_conf *lconf; > + unsigned int lcore_id; > + int i, nb_enq, nb_deq; > + > + if (event_p_id < 0) > + return; > + > + lcore_id =3D rte_lcore_id(); > + > + lconf =3D &lcore_conf[lcore_id]; > + > + RTE_LOG(INFO, L3FWD, "entering %s on lcore %u\n", __func__, lcore_id); > + > + while (!force_quit) { > + /* Read events from RX queues */ > + nb_deq =3D rte_event_dequeue_burst(event_d_id, event_p_id, > + events, deq_len, 0); > + if (nb_deq =3D=3D 0) { > + rte_pause(); > + continue; > + } > + > + for (i =3D 0; i < nb_deq; i++) { > + struct rte_mbuf *mbuf =3D events[i].mbuf; > + > + mbuf->port =3D lpm_get_dst_port(lconf, mbuf, mbuf->port); > + > +#if defined RTE_ARCH_X86 || defined RTE_MACHINE_CPUFLAG_NEON \ > + || defined RTE_ARCH_PPC_64 > + process_packet(mbuf, &mbuf->port); > +#else > + struct rte_ether_hdr *eth_hdr =3D rte_pktmbuf_mtod(mbuf, > + struct rte_ether_hdr *); > + > +#ifdef DO_RFC_1812_CHECKS > + struct rte_ipv4_hdr *ipv4_hdr; > + if (RTE_ETH_IS_IPV4_HDR(mbuf->packet_type)) { > + /* Handle IPv4 headers.*/ > + ipv4_hdr =3D rte_pktmbuf_mtod_offset(mbuf, > + struct rte_ipv4_hdr *, > + sizeof(struct rte_ether_hdr)); > + > + if (is_valid_ipv4_pkt(ipv4_hdr, mbuf->pkt_len) > + < 0) { > + mbuf->port =3D BAD_PORT; > + continue; > + } > + /* Update time to live and header checksum */ > + --(ipv4_hdr->time_to_live); > + ++(ipv4_hdr->hdr_checksum); > + } > +#endif > + /* dst addr */ > + *(uint64_t *)ð_hdr->d_addr =3D dest_eth_addr[ > + mbuf->port]; > + /* src addr */ > + rte_ether_addr_copy(&ports_eth_addr[mbuf->port], > + ð_hdr->s_addr); > +#endif > + if (flags & L3FWD_EVENT_TX_ENQ) { > + events[i].queue_id =3D tx_q_id; > + events[i].op =3D RTE_EVENT_OP_FORWARD; > + } > + > + if (flags & L3FWD_EVENT_TX_DIRECT) > + rte_event_eth_tx_adapter_txq_set(mbuf, 0); > + } > + > + if (flags & L3FWD_EVENT_TX_ENQ) { > + nb_enq =3D rte_event_enqueue_burst(event_d_id, event_p_id, > + events, nb_deq); > + while (nb_enq < nb_deq && !force_quit) > + nb_enq +=3D rte_event_enqueue_burst(event_d_id, > + event_p_id, events + nb_enq, > + nb_deq - nb_enq); > + } > + > + if (flags & L3FWD_EVENT_TX_DIRECT) { > + nb_enq =3D rte_event_eth_tx_adapter_enqueue(event_d_id, > + event_p_id, events, nb_deq, 0); > + while (nb_enq < nb_deq && !force_quit) > + nb_enq +=3D rte_event_eth_tx_adapter_enqueue( > + event_d_id, event_p_id, > + events + nb_enq, > + nb_deq - nb_enq, 0); > + } > + } > +} > + > +static __rte_always_inline void > +lpm_event_loop(struct l3fwd_event_resources *evt_rsrc, > + const uint8_t flags) > +{ > + if (flags & L3FWD_EVENT_SINGLE) > + lpm_event_loop_single(evt_rsrc, flags); > + if (flags & L3FWD_EVENT_BURST) > + lpm_event_loop_burst(evt_rsrc, flags); > +} > + > +int __rte_noinline > +lpm_event_main_loop_tx_d(__attribute__((unused)) void *dummy) > +{ > + struct l3fwd_event_resources *evt_rsrc =3D > + l3fwd_get_eventdev_rsrc(); > + > + lpm_event_loop(evt_rsrc, L3FWD_EVENT_TX_DIRECT | L3FWD_EVENT_SINGLE); > + return 0; > +} > + > +int __rte_noinline > +lpm_event_main_loop_tx_d_burst(__attribute__((unused)) void *dummy) > +{ > + struct l3fwd_event_resources *evt_rsrc =3D > + l3fwd_get_eventdev_rsrc(); > + > + lpm_event_loop(evt_rsrc, L3FWD_EVENT_TX_DIRECT | L3FWD_EVENT_BURST); > + return 0; > +} > + > +int __rte_noinline > +lpm_event_main_loop_tx_q(__attribute__((unused)) void *dummy) > +{ > + struct l3fwd_event_resources *evt_rsrc =3D > + l3fwd_get_eventdev_rsrc(); > + > + lpm_event_loop(evt_rsrc, L3FWD_EVENT_TX_ENQ | L3FWD_EVENT_SINGLE); > + return 0; > +} > + > +int __rte_noinline > +lpm_event_main_loop_tx_q_burst(__attribute__((unused)) void *dummy) > +{ > + struct l3fwd_event_resources *evt_rsrc =3D > + l3fwd_get_eventdev_rsrc(); > + > + lpm_event_loop(evt_rsrc, L3FWD_EVENT_TX_ENQ | L3FWD_EVENT_BURST); > + return 0; > +} > + > void > setup_lpm(const int socketid) > { > diff --git a/examples/l3fwd/main.c b/examples/l3fwd/main.c > index 69d212bc2..b88fd88db 100644 > --- a/examples/l3fwd/main.c > +++ b/examples/l3fwd/main.c > @@ -951,13 +951,18 @@ main(int argc, char **argv) > if (ret < 0) > rte_exit(EXIT_FAILURE, "Invalid L3FWD parameters\n"); >=20 > + /* Setup function pointers for lookup method. */ > + setup_l3fwd_lookup_tables(); > + > evt_rsrc->per_port_pool =3D per_port_pool; > evt_rsrc->pkt_pool =3D pktmbuf_pool; > evt_rsrc->port_mask =3D enabled_port_mask; > /* Configure eventdev parameters if user has requested */ > l3fwd_event_resource_setup(&port_conf); > - if (evt_rsrc->enabled) > + if (evt_rsrc->enabled) { > + l3fwd_lkp.main_loop =3D evt_rsrc->ops.lpm_event_loop; > goto skip_port_config; > + } >=20 > if (check_lcore_params() < 0) > rte_exit(EXIT_FAILURE, "check_lcore_params failed\n"); > @@ -973,9 +978,6 @@ main(int argc, char **argv) >=20 > nb_lcores =3D rte_lcore_count(); >=20 > - /* Setup function pointers for lookup method. */ > - setup_l3fwd_lookup_tables(); > - > /* initialize all ports */ > RTE_ETH_FOREACH_DEV(portid) { > struct rte_eth_conf local_port_conf =3D port_conf; > -- > 2.17.1