From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id 1B62C1B1C3 for ; Thu, 11 Jan 2018 05:05:49 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 10 Jan 2018 20:05:49 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.46,343,1511856000"; d="scan'208";a="194041986" Received: from dpdk06.sh.intel.com ([10.67.110.196]) by fmsmga006.fm.intel.com with ESMTP; 10 Jan 2018 20:05:47 -0800 From: Jianfeng Tan To: dev@dpdk.org Cc: anatoly.burakov@intel.com, bruce.richardson@intel.com, konstantin.ananyev@intel.com, thomas@monjalon.net, Jianfeng Tan Date: Thu, 11 Jan 2018 04:07:32 +0000 Message-Id: <1515643654-129489-3-git-send-email-jianfeng.tan@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1515643654-129489-1-git-send-email-jianfeng.tan@intel.com> References: <1512067450-59203-1-git-send-email-jianfeng.tan@intel.com> <1515643654-129489-1-git-send-email-jianfeng.tan@intel.com> Subject: [dpdk-dev] [PATCH v2 2/4] eal: add and del secondary processes in the primary 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: , X-List-Received-Date: Thu, 11 Jan 2018 04:05:50 -0000 By the multi-process channel, we add an mp action named "proc". As a secondary process starts, it sends a "proc add" message to the primary. As the primary finds a failure in sending message to a specific secondary process, that secondary process is treated as exited; and we remove it from the secondary array by sending a "proc del" message to the primary itself. Test: 1. Start the primary and the secondary process $ (testpmd) -c 0x3 -n 4 -- -i $ (helloworld) -c 0xc -n 4 --proc-type=auto -- 2. Check the log of testpmd: ... EAL: bind to /var/run/.rte_unix ... EAL: add secondary: /var/run/.testpmd_unix_(xxx) ... 3. Check the log of helloworld: ... EAL: bind to /var/run/.testpmd_unix_xxx EAL: bind to /var/run/.testpmd_unix_c_xxx ... Signed-off-by: Jianfeng Tan --- lib/librte_eal/common/eal_common_proc.c | 88 ++++++++++++++++++++++++++++++++- 1 file changed, 86 insertions(+), 2 deletions(-) diff --git a/lib/librte_eal/common/eal_common_proc.c b/lib/librte_eal/common/eal_common_proc.c index d700e9e..70519cc 100644 --- a/lib/librte_eal/common/eal_common_proc.c +++ b/lib/librte_eal/common/eal_common_proc.c @@ -54,6 +54,13 @@ struct mp_msghdr { char params[0]; } __rte_packed; +struct proc_request { +#define MP_PROC_ADD 0 +#define MP_PROC_DEL 1 + int type; + char path[MAX_UNIX_PATH_LEN]; +}; + int rte_eal_primary_proc_alive(const char *config_file_path) { @@ -214,6 +221,58 @@ mp_handle(void *arg __rte_unused) return NULL; } +static int +add_sec_proc(const char *path) +{ + int i; + + for (i = 0; i < MAX_SECONDARY_PROCS; ++i) + if (mp_sec_sockets[i] == NULL) + break; + if (i < MAX_SECONDARY_PROCS) + mp_sec_sockets[i] = strdup(path); + + return i < MAX_SECONDARY_PROCS; +} + +static int +del_sec_proc(const char *path) +{ + int i; + + for (i = 0; i < MAX_SECONDARY_PROCS; ++i) { + if (!strcmp(mp_sec_sockets[i], path)) { + free(mp_sec_sockets[i]); + mp_sec_sockets[i] = NULL; + break; + } + } + + return i < MAX_SECONDARY_PROCS; +} + +static int +mp_primary_proc(const void *params, + int len __rte_unused, + int fds[] __rte_unused, + int fds_num __rte_unused) +{ + const struct proc_request *r = (const struct proc_request *)params; + + switch (r->type) { + case MP_PROC_ADD: + RTE_LOG(INFO, EAL, "add secondary: %s\n", r->path); + return add_sec_proc(r->path); + case MP_PROC_DEL: + RTE_LOG(INFO, EAL, "del secondary: %s\n", r->path); + return del_sec_proc(r->path); + default: + RTE_LOG(ERR, EAL, "invalid type: %d\n", r->type); + } + + return -1; +} + static inline const char * get_unix_path(int is_server) { @@ -267,6 +326,22 @@ rte_eal_mp_channel_init(void) if (mp_fd < 0) return -1; + if (rte_eal_process_type() == RTE_PROC_PRIMARY) { + if (rte_eal_mp_action_register("proc", mp_primary_proc) < 0) { + RTE_LOG(ERR, EAL, "failed to register handler\n"); + goto error; + } + } else { + struct proc_request r; + + r.type = MP_PROC_ADD; + snprintf(r.path, MAX_UNIX_PATH_LEN, "%s", get_unix_path(1)); + if (rte_eal_mp_sendmsg("proc", &r, sizeof(r), NULL, 0) < 0) { + RTE_LOG(ERR, EAL, "failed to add into primary\n"); + goto error; + } + } + if (pthread_create(&tid, NULL, mp_handle, NULL) < 0) { RTE_LOG(ERR, EAL, "failed to create mp handle thead: %s\n", strerror(errno)); @@ -354,10 +429,19 @@ send_msg(int fd, const char *dst_path, struct mp_msghdr *msg, int fds[]) if (ret < 0) { RTE_LOG(ERR, EAL, "failed to send msg: %s\n", strerror(errno)); - if (rte_eal_process_type() == RTE_PROC_PRIMARY) + if (rte_eal_process_type() == RTE_PROC_PRIMARY) { + struct proc_request r; + RTE_LOG(ERR, EAL, "secondary process (%s) exited\n", dst_path); - else if (!rte_eal_primary_proc_alive(NULL)) + r.type = MP_PROC_DEL; + snprintf(r.path, MAX_UNIX_PATH_LEN, "%s", dst_path); + if (rte_eal_mp_sendmsg("proc", &r, + sizeof(r), NULL, 0) < 0) + RTE_LOG(ERR, EAL, + "failed to del secondary %s\n", + dst_path); + } else if (!rte_eal_primary_proc_alive(NULL)) RTE_LOG(ERR, EAL, "primary process exited\n"); return 0; -- 2.7.4