From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 9150245B1C; Sat, 12 Oct 2024 10:51:37 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 0CB0F40268; Sat, 12 Oct 2024 10:51:37 +0200 (CEST) Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by mails.dpdk.org (Postfix) with ESMTP id B9FBA40265 for ; Sat, 12 Oct 2024 10:51:35 +0200 (CEST) Received: from mail.maildlp.com (unknown [172.19.163.174]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4XQcc41Y4rzkWhw; Sat, 12 Oct 2024 16:49:08 +0800 (CST) Received: from kwepemf500004.china.huawei.com (unknown [7.202.181.242]) by mail.maildlp.com (Postfix) with ESMTPS id 55B9B140134; Sat, 12 Oct 2024 16:51:33 +0800 (CST) Received: from localhost.localdomain (10.28.79.22) by kwepemf500004.china.huawei.com (7.202.181.242) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Sat, 12 Oct 2024 16:51:32 +0800 From: Jie Hai To: , , CC: , , Subject: [PATCH] examples/l3fwd: add option to set RX burst size Date: Sat, 12 Oct 2024 16:40:52 +0800 Message-ID: <20241012084052.3485-1-haijie1@huawei.com> X-Mailer: git-send-email 2.22.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.28.79.22] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To kwepemf500004.china.huawei.com (7.202.181.242) X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Now the Rx burst size is fixed to MAX_PKT_BURST (32). This parameter needs to be modified in some performance optimization scenarios. So an option '--burst' is added to set the burst size explicitly. The default value is DEFAULT_PKT_BURST (32) and maximum value is MAX_PKT_BURST (512). Signed-off-by: Jie Hai --- examples/l3fwd/l3fwd.h | 5 +++- examples/l3fwd/l3fwd_acl.c | 2 +- examples/l3fwd/l3fwd_em.c | 2 +- examples/l3fwd/l3fwd_fib.c | 2 +- examples/l3fwd/l3fwd_lpm.c | 2 +- examples/l3fwd/main.c | 58 ++++++++++++++++++++++++++++++++++++-- 6 files changed, 64 insertions(+), 7 deletions(-) diff --git a/examples/l3fwd/l3fwd.h b/examples/l3fwd/l3fwd.h index 93ce652d02b7..3ebee6301295 100644 --- a/examples/l3fwd/l3fwd.h +++ b/examples/l3fwd/l3fwd.h @@ -23,7 +23,8 @@ #define RX_DESC_DEFAULT 1024 #define TX_DESC_DEFAULT 1024 -#define MAX_PKT_BURST 32 +#define DEFAULT_PKT_BURST 32 +#define MAX_PKT_BURST 512 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */ #define MEMPOOL_CACHE_SIZE 256 @@ -115,6 +116,8 @@ extern struct acl_algorithms acl_alg[]; extern uint32_t max_pkt_len; +extern uint32_t nb_pkt_per_burst; + /* Send burst of packets on an output interface */ static inline int send_burst(struct lcore_conf *qconf, uint16_t n, uint16_t port) diff --git a/examples/l3fwd/l3fwd_acl.c b/examples/l3fwd/l3fwd_acl.c index b635011ef708..ccb9946837ed 100644 --- a/examples/l3fwd/l3fwd_acl.c +++ b/examples/l3fwd/l3fwd_acl.c @@ -1119,7 +1119,7 @@ acl_main_loop(__rte_unused void *dummy) portid = qconf->rx_queue_list[i].port_id; queueid = qconf->rx_queue_list[i].queue_id; nb_rx = rte_eth_rx_burst(portid, queueid, - pkts_burst, MAX_PKT_BURST); + pkts_burst, nb_pkt_per_burst); if (nb_rx > 0) { acl_process_pkts(pkts_burst, hops, nb_rx, diff --git a/examples/l3fwd/l3fwd_em.c b/examples/l3fwd/l3fwd_em.c index 31a7e05e39d0..da9c45e3a482 100644 --- a/examples/l3fwd/l3fwd_em.c +++ b/examples/l3fwd/l3fwd_em.c @@ -644,7 +644,7 @@ em_main_loop(__rte_unused void *dummy) portid = qconf->rx_queue_list[i].port_id; queueid = qconf->rx_queue_list[i].queue_id; nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst, - MAX_PKT_BURST); + nb_pkt_per_burst); if (nb_rx == 0) continue; diff --git a/examples/l3fwd/l3fwd_fib.c b/examples/l3fwd/l3fwd_fib.c index f38b19af3f57..aa81b12fe7dc 100644 --- a/examples/l3fwd/l3fwd_fib.c +++ b/examples/l3fwd/l3fwd_fib.c @@ -239,7 +239,7 @@ fib_main_loop(__rte_unused void *dummy) portid = qconf->rx_queue_list[i].port_id; queueid = qconf->rx_queue_list[i].queue_id; nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst, - MAX_PKT_BURST); + nb_pkt_per_burst); if (nb_rx == 0) continue; diff --git a/examples/l3fwd/l3fwd_lpm.c b/examples/l3fwd/l3fwd_lpm.c index e8fd95aae9ce..048c02491378 100644 --- a/examples/l3fwd/l3fwd_lpm.c +++ b/examples/l3fwd/l3fwd_lpm.c @@ -205,7 +205,7 @@ lpm_main_loop(__rte_unused void *dummy) portid = qconf->rx_queue_list[i].port_id; queueid = qconf->rx_queue_list[i].queue_id; nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst, - MAX_PKT_BURST); + nb_pkt_per_burst); if (nb_rx == 0) continue; diff --git a/examples/l3fwd/main.c b/examples/l3fwd/main.c index 01b763e5ba11..ba0a7f7088f0 100644 --- a/examples/l3fwd/main.c +++ b/examples/l3fwd/main.c @@ -55,6 +55,7 @@ uint16_t nb_rxd = RX_DESC_DEFAULT; uint16_t nb_txd = TX_DESC_DEFAULT; +uint32_t nb_pkt_per_burst = DEFAULT_PKT_BURST; /**< Ports set in promiscuous mode off by default. */ static int promiscuous_on; @@ -395,6 +396,7 @@ print_usage(const char *prgname) " --config (port,queue,lcore)[,(port,queue,lcore)]" " [--rx-queue-size NPKTS]" " [--tx-queue-size NPKTS]" + " [--burst NPKTS]" " [--eth-dest=X,MM:MM:MM:MM:MM:MM]" " [--max-pkt-len PKTLEN]" " [--no-numa]" @@ -420,6 +422,8 @@ print_usage(const char *prgname) " Default: %d\n" " --tx-queue-size NPKTS: Tx queue size in decimal\n" " Default: %d\n" + " --burst NPKTS: Burst size in decimal\n" + " Default: %d\n" " --eth-dest=X,MM:MM:MM:MM:MM:MM: Ethernet destination for port X\n" " --max-pkt-len PKTLEN: maximum packet length in decimal (64-9600)\n" " --no-numa: Disable numa awareness\n" @@ -449,7 +453,7 @@ print_usage(const char *prgname) " another is route entry at while line leads with character '%c'.\n" " --rule_ipv6=FILE: Specify the ipv6 rules entries file.\n" " --alg: ACL classify method to use, one of: %s.\n\n", - prgname, RX_DESC_DEFAULT, TX_DESC_DEFAULT, + prgname, RX_DESC_DEFAULT, TX_DESC_DEFAULT, DEFAULT_PKT_BURST, ACL_LEAD_CHAR, ROUTE_LEAD_CHAR, alg); } @@ -667,6 +671,49 @@ parse_lookup(const char *optarg) return 0; } +static void +parse_pkt_burst(const char *optarg) +{ + struct rte_eth_dev_info dev_info; + uint16_t burst_size; + uint16_t pkt_burst; + char *end = NULL; + int ret; + + /* parse decimal string */ + pkt_burst = strtoul(optarg, &end, 10); + if ((optarg[0] == '\0') || (end == NULL) || (*end != '\0')) + return; + + if (pkt_burst > MAX_PKT_BURST) { + RTE_LOG(INFO, L3FWD, "User provided burst must be <= %d. Using default value %d\n", + MAX_PKT_BURST, nb_pkt_per_burst); + return; + } else if (pkt_burst > 0) { + nb_pkt_per_burst = pkt_burst; + return; + } + + /* If user gives a value of zero, query the PMD for its recommended Rx burst size. */ + ret = rte_eth_dev_info_get(0, &dev_info); + if (ret != 0) + return; + burst_size = dev_info.default_rxportconf.burst_size; + if (burst_size == 0) { + RTE_LOG(INFO, L3FWD, "PMD does not recommend a burst size. Using default value %d. " + "User provided value must be in [1, %d]\n", + nb_pkt_per_burst, MAX_PKT_BURST); + return; + } else if (burst_size > MAX_PKT_BURST) { + RTE_LOG(INFO, L3FWD, "PMD recommended burst size %d exceeds maximum value %d. " + "Using default value %d\n", + burst_size, MAX_PKT_BURST, nb_pkt_per_burst); + return; + } + nb_pkt_per_burst = burst_size; + RTE_LOG(INFO, L3FWD, "Using PMD-provided burst value %d\n", burst_size); +} + #define MAX_JUMBO_PKT_LEN 9600 static const char short_options[] = @@ -698,6 +745,7 @@ static const char short_options[] = #define CMD_LINE_OPT_RULE_IPV4 "rule_ipv4" #define CMD_LINE_OPT_RULE_IPV6 "rule_ipv6" #define CMD_LINE_OPT_ALG "alg" +#define CMD_LINE_OPT_PKT_BURST "burst" enum { /* long options mapped to a short option */ @@ -726,7 +774,8 @@ enum { CMD_LINE_OPT_LOOKUP_NUM, CMD_LINE_OPT_ENABLE_VECTOR_NUM, CMD_LINE_OPT_VECTOR_SIZE_NUM, - CMD_LINE_OPT_VECTOR_TMO_NS_NUM + CMD_LINE_OPT_VECTOR_TMO_NS_NUM, + CMD_LINE_OPTPKT_BURST_NUM }; static const struct option lgopts[] = { @@ -753,6 +802,7 @@ static const struct option lgopts[] = { {CMD_LINE_OPT_RULE_IPV4, 1, 0, CMD_LINE_OPT_RULE_IPV4_NUM}, {CMD_LINE_OPT_RULE_IPV6, 1, 0, CMD_LINE_OPT_RULE_IPV6_NUM}, {CMD_LINE_OPT_ALG, 1, 0, CMD_LINE_OPT_ALG_NUM}, + {CMD_LINE_OPT_PKT_BURST, 1, 0, CMD_LINE_OPTPKT_BURST_NUM}, {NULL, 0, 0, 0} }; @@ -841,6 +891,10 @@ parse_args(int argc, char **argv) parse_queue_size(optarg, &nb_txd, 0); break; + case CMD_LINE_OPTPKT_BURST_NUM: + parse_pkt_burst(optarg); + break; + case CMD_LINE_OPT_ETH_DEST_NUM: parse_eth_dest(optarg); break; -- 2.22.0