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Mon, 13 Feb 2017 06:13:53 -0800 (PST) Received: from localhost.localdomain ([193.202.22.66]) by smtp.gmail.com with ESMTPSA id i189sm5582542wmg.7.2017.02.13.06.13.52 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 13 Feb 2017 06:13:52 -0800 (PST) From: Bogdan Pricope To: lng-odp@lists.linaro.org Date: Mon, 13 Feb 2017 16:14:04 +0200 Message-Id: <1486995244-21010-1-git-send-email-bogdan.pricope@linaro.org> X-Mailer: git-send-email 1.9.1 Subject: [lng-odp] [PATCH 2/5] test: generator: send UDP packets in bursts X-BeenThere: lng-odp@lists.linaro.org X-Mailman-Version: 2.1.16 Precedence: list List-Id: "The OpenDataPlane \(ODP\) List" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: lng-odp-bounces@lists.linaro.org Sender: "lng-odp" Signed-off-by: Bogdan Pricope --- example/generator/odp_generator.c | 77 +++++++++++++++++++++++++++------------ 1 file changed, 53 insertions(+), 24 deletions(-) -- 1.9.1 diff --git a/example/generator/odp_generator.c b/example/generator/odp_generator.c index d1e3ecc..158bddf 100644 --- a/example/generator/odp_generator.c +++ b/example/generator/odp_generator.c @@ -26,6 +26,7 @@ #define POOL_NUM_PKT 2048 /* Number of packets in packet pool */ #define POOL_PKT_LEN 1856 /* Max packet length */ #define DEFAULT_PKT_INTERVAL 1000 /* Interval between each packet */ +#define MAX_UDP_TX_BURST 32 #define APPL_MODE_UDP 0 /**< UDP mode */ #define APPL_MODE_PING 1 /**< ping mode */ @@ -57,6 +58,8 @@ typedef struct { int timeout; /**< wait time */ int interval; /**< wait interval ms between sending each packet */ + int udp_tx_burst; /**< number of udp packets to send with one + API call */ } appl_args_t; /** @@ -432,11 +435,13 @@ static odp_pktio_t create_pktio(const char *dev, odp_pool_t pool) static int gen_send_thread(void *arg) { int thr; - int ret; + int ret, i; odp_pktio_t pktio; thread_args_t *thr_args; odp_pktout_queue_t pktout; - odp_packet_t pkt; + odp_packet_t pkt_array[MAX_UDP_TX_BURST]; + int pkt_array_size; + int burst_start, burst_size; odp_packet_t pkt_ref = ODP_PACKET_INVALID; thr = odp_thread_id(); @@ -454,11 +459,13 @@ static int gen_send_thread(void *arg) return -1; } - if (args->appl.mode == APPL_MODE_UDP) + if (args->appl.mode == APPL_MODE_UDP) { pkt_ref = setup_udp_pkt_ref(thr_args->pool); - else if (args->appl.mode == APPL_MODE_PING) + pkt_array_size = args->appl.udp_tx_burst; + } else if (args->appl.mode == APPL_MODE_PING) { pkt_ref = setup_icmp_pkt_ref(thr_args->pool); - else { + pkt_array_size = 1; + } else { EXAMPLE_ERR(" [%02i] Error: invalid processing mode %d\n", thr, args->appl.mode); return -1; @@ -479,32 +486,43 @@ static int gen_send_thread(void *arg) (unsigned int)args->appl.number) break; - pkt = ODP_PACKET_INVALID; + if (args->appl.mode == APPL_MODE_UDP) { + for (i = 0; i < pkt_array_size; i++) { + pkt_array[i] = pack_udp_pkt(thr_args->pool, pkt_ref); + if (!odp_packet_is_valid(pkt_array[i])) + break; + } + if (i != pkt_array_size) { + EXAMPLE_ERR(" [%2i] alloc_multi failed\n", thr); + break; + } + } else if (args->appl.mode == APPL_MODE_PING) { + pkt_array[0] = pack_icmp_pkt(thr_args->pool, pkt_ref); + if (!odp_packet_is_valid(pkt_array[0])) { + EXAMPLE_ERR(" [%2i] alloc_single failed\n", thr); + break; + } + } else + break; - if (args->appl.mode == APPL_MODE_UDP) - pkt = pack_udp_pkt(thr_args->pool, pkt_ref); - else if (args->appl.mode == APPL_MODE_PING) - pkt = pack_icmp_pkt(thr_args->pool, pkt_ref); - if (pkt == ODP_PACKET_INVALID) { - /* Thread gives up as soon as it sees the pool empty. - * Depending on pool size and transmit latency, it may - * be normal that pool gets empty sometimes. */ - EXAMPLE_ERR(" [%2i] alloc_single failed\n", thr); - break; - } - for (;;) { - ret = odp_pktout_send(pktout, &pkt, 1); - if (ret == 1) { + for (burst_start = 0, burst_size = pkt_array_size;;) { + ret = odp_pktout_send(pktout, &pkt_array[burst_start], + burst_size); + if (ret == burst_size) { break; - } else if (ret == 0) { - odp_atomic_add_u64(&counters.tx_drops, 1); + } else if (ret >= 0 && ret < burst_size) { + odp_atomic_add_u64(&counters.tx_drops, + burst_size - ret); + burst_start += ret; + burst_size -= ret; odp_time_wait_ns(ODP_TIME_MSEC_IN_NS); continue; } EXAMPLE_ERR(" [%02i] packet send failed\n", thr); - odp_packet_free(pkt); + for (i = 0; i < burst_size; i++) + odp_packet_free(pkt_array[burst_start + i]); break; } @@ -1054,10 +1072,11 @@ static void parse_args(int argc, char *argv[], appl_args_t *appl_args) {"timeout", required_argument, NULL, 't'}, {"interval", required_argument, NULL, 'i'}, {"help", no_argument, NULL, 'h'}, + {"udp_tx_burst", no_argument, NULL, 'x'}, {NULL, 0, NULL, 0} }; - static const char *shortopts = "+I:a:b:s:d:p:i:m:n:t:w:c:h"; + static const char *shortopts = "+I:a:b:s:d:p:i:m:n:t:w:c:x:h"; /* let helper collect its own arguments (e.g. --odph_proc) */ odph_parse_options(argc, argv, shortopts, longopts); @@ -1067,6 +1086,7 @@ static void parse_args(int argc, char *argv[], appl_args_t *appl_args) appl_args->payload = 56; appl_args->timeout = -1; appl_args->interval = DEFAULT_PKT_INTERVAL; + appl_args->udp_tx_burst = 16; opterr = 0; /* do not issue errors on helper options */ @@ -1192,6 +1212,14 @@ static void parse_args(int argc, char *argv[], appl_args_t *appl_args) exit(EXIT_FAILURE); } break; + case 'x': + appl_args->udp_tx_burst = atoi(optarg); + if (appl_args->udp_tx_burst > MAX_UDP_TX_BURST) { + EXAMPLE_ERR("wrong UDP Tx burst size (max %d)\n", + MAX_UDP_TX_BURST); + exit(EXIT_FAILURE); + } + break; case 'h': usage(argv[0]); @@ -1286,6 +1314,7 @@ static void usage(char *progname) " default is to assign all\n" " -n, --count the number of packets to be send\n" " -c, --cpumask to set on cores\n" + " -x, --udp_tx_burst size of UDP TX burst\n" "\n", NO_PATH(progname), NO_PATH(progname) ); }