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[108.92.19.205]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-77607a47d7fsm18898875b3a.31.2025.09.17.04.36.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 17 Sep 2025 04:36:12 -0700 (PDT) From: Khadem Ullah <14pwcse1224@uetpeshawar.edu.pk> To: Aman Singh , Tyler Retzlaff , Anatoly Burakov , "Min Hu (Connor)" , Ferruh Yigit , Andrew Rybchenko , Xiaoyun Li , Lijun Ou Cc: dev@dpdk.org, Khadem Ullah <14pwcse1224@uetpeshawar.edu.pk>, stable@dpdk.org, Stephen Hemminger Subject: [PATCH v4] app/testpmd: stop secondary process fwd_lcores during primary teardown Date: Wed, 17 Sep 2025 04:36:01 -0700 Message-Id: <20250917113601.521308-1-14pwcse1224@uetpeshawar.edu.pk> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20250915112513.496136-1-14pwcse1224@uetpeshawar.edu.pk> References: <20250915112513.496136-1-14pwcse1224@uetpeshawar.edu.pk> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 When the secondary process testpmd application running any fwd_engine and after that primary has exited will cause a crash. This patch forces secondary process forwarding lcores in fwd_engine to stop before the primary process exits. Fixes: a550baf24af90f ("app/testpmd: support multi-process") Cc: stable@dpdk.org Signed-off-by: Khadem Ullah <14pwcse1224@uetpeshawar.edu.pk> Signed-off-by: Stephen Hemminger --- app/test-pmd/testpmd.c | 57 ++++++++++++++++++++++++++++++++++--- app/test-pmd/testpmd.h | 1 - lib/eal/common/hotplug_mp.h | 1 + 3 files changed, 54 insertions(+), 5 deletions(-) diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c index 0f58a31eb5..474c97ed1c 100644 --- a/app/test-pmd/testpmd.c +++ b/app/test-pmd/testpmd.c @@ -75,6 +75,7 @@ #endif #include "testpmd.h" +#include "hotplug_mp.h" #ifndef MAP_HUGETLB /* FreeBSD may not have MAP_HUGETLB (in fact, it probably doesn't) */ @@ -103,7 +104,7 @@ uint16_t verbose_level = 0; /**< Silent by default. */ int testpmd_logtype; /**< Log type for testpmd logs */ /* Maximum delay for exiting after primary process. */ -#define MONITOR_INTERVAL (500 * 1000) +#define MONITOR_INTERVAL (500) /* use main core for command line ? */ uint8_t interactive = 0; @@ -238,6 +239,7 @@ unsigned int xstats_display_num; /**< Size of extended statistics to show */ */ volatile uint8_t f_quit; uint8_t cl_quit; /* Quit testpmd from cmdline. */ +volatile uint8_t f_exit_sec; /* * Max Rx frame size, set by '--max-pkt-len' parameter. @@ -2563,7 +2565,12 @@ stop_packet_forwarding(void) for (lc_id = 0; lc_id < cur_fwd_config.nb_fwd_lcores; lc_id++) fwd_lcores[lc_id]->stopped = 1; printf("\nWaiting for lcores to finish...\n"); - rte_eal_mp_wait_lcore(); +#ifndef RTE_EXEC_ENV_WINDOWS + if (rte_eal_process_type() == RTE_PROC_PRIMARY) + rte_eal_mp_wait_lcore(); +#else + rte_eal_mp_wait_lcore(); +#endif port_fwd_end = cur_fwd_config.fwd_eng->port_fwd_end; if (port_fwd_end != NULL) { for (i = 0; i < cur_fwd_config.nb_fwd_ports; i++) { @@ -3630,6 +3637,19 @@ pmd_test_exit(void) #endif if (ports != NULL) { no_link_check = 1; + if (rte_eal_process_type() == RTE_PROC_PRIMARY) { + struct eal_dev_mp_req req = { .t = EAL_DEV_REQ_TYPE_STOP, + .result = 0}; + struct rte_mp_msg mp_req; + memset(&mp_req, 0, sizeof(mp_req)); + snprintf(mp_req.name, sizeof(mp_req.name), "eal_dev_mp_stop_req"); + memcpy(mp_req.param, &req, sizeof(req)); + mp_req.len_param = sizeof(req); + struct rte_mp_reply reply; + struct timespec ts = {.tv_sec = 5, .tv_nsec = 0}; + printf("Primary: Sending 'stop_req' request to secondary...\n"); + rte_mp_request_sync(&mp_req, &reply, &ts); + } RTE_ETH_FOREACH_DEV(pt_id) { printf("\nStopping port %d...\n", pt_id); fflush(stdout); @@ -4365,12 +4385,35 @@ signal_handler(int signum __rte_unused) prompt_exit(); } +static int +handle_eal_dev_request(const struct rte_mp_msg *request, const void *peer) +{ + const struct eal_dev_mp_req *req = + (const struct eal_dev_mp_req *)request->param; + struct eal_dev_mp_req reply_data; + struct rte_mp_msg reply_msg; + + printf("Received message from primary\n"); + if (req->t == EAL_DEV_REQ_TYPE_STOP) { + f_quit = 1; + reply_data.result = 0; + } else { + reply_data.result = -1; + } + memset(&reply_msg, 0, sizeof(reply_msg)); + strlcpy(reply_msg.name, request->name, sizeof(reply_msg.name)); + memcpy(reply_msg.param, &reply_data, sizeof(reply_data)); + rte_mp_reply(&reply_msg, peer); + printf("Sent stop reply to primary\n"); + return 0; +} + #ifndef RTE_EXEC_ENV_WINDOWS /* Alarm signal handler, used to check that primary process */ static void monitor_primary(void *arg __rte_unused) { - if (rte_eal_primary_proc_alive(NULL)) { + if (rte_eal_primary_proc_alive(NULL) && (!f_quit)) { rte_eal_alarm_set(MONITOR_INTERVAL, monitor_primary, NULL); } else { /* @@ -4378,6 +4421,7 @@ monitor_primary(void *arg __rte_unused) * is no longer valid. Calling any cleanup code is going to * run into use after free. */ + stop_packet_forwarding(); fprintf(stderr, "\nPrimary process is no longer active, exiting...\n"); exit(EXIT_FAILURE); } @@ -4432,6 +4476,9 @@ main(int argc, char** argv) if (rte_eal_process_type() == RTE_PROC_SECONDARY && enable_primary_monitor() < 0) rte_exit(EXIT_FAILURE, "Cannot setup primary monitor"); + else if (rte_mp_action_register("eal_dev_mp_stop_req", + handle_eal_dev_request) != 0) + rte_exit(EXIT_FAILURE, "Failed to register message action\n"); #endif /* allocate port structures, and init them */ @@ -4628,8 +4675,10 @@ main(int argc, char** argv) } #ifndef RTE_EXEC_ENV_WINDOWS - if (rte_eal_process_type() == RTE_PROC_SECONDARY) + if (rte_eal_process_type() == RTE_PROC_SECONDARY) { disable_primary_monitor(); + rte_mp_action_unregister("eal_dev_mp_stop_req"); + } #endif pmd_test_exit(); diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h index 96ac88a29c..79adb82f74 100644 --- a/app/test-pmd/testpmd.h +++ b/app/test-pmd/testpmd.h @@ -34,7 +34,6 @@ #define RTE_PORT_HANDLING (uint16_t)3 extern uint8_t cl_quit; -extern volatile uint8_t f_quit; /* * It is used to allocate the memory for hash key. diff --git a/lib/eal/common/hotplug_mp.h b/lib/eal/common/hotplug_mp.h index 7221284286..bfea2906c0 100644 --- a/lib/eal/common/hotplug_mp.h +++ b/lib/eal/common/hotplug_mp.h @@ -19,6 +19,7 @@ enum eal_dev_req_type { EAL_DEV_REQ_TYPE_DETACH, EAL_DEV_REQ_TYPE_ATTACH_ROLLBACK, EAL_DEV_REQ_TYPE_DETACH_ROLLBACK, + EAL_DEV_REQ_TYPE_STOP, }; struct eal_dev_mp_req { -- 2.27.0