From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr1-f67.google.com (mail-wr1-f67.google.com [209.85.221.67]) by dpdk.org (Postfix) with ESMTP id 135521B54B for ; Wed, 11 Jul 2018 23:45:51 +0200 (CEST) Received: by mail-wr1-f67.google.com with SMTP id c13-v6so19558163wrt.1 for ; Wed, 11 Jul 2018 14:45:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=6wind-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=yXVPuQbXIM7PPzxvuLOIBdECBu+SGT4tTjEn838vlUA=; b=1M0bgxYD+Cbeg925PnWHEp5AAJDxNQAAF+yJEa/AgRWdE8Dx/b3IWVc2zO52dzZvj7 bW26OUactP33kc9V5dK1kD1AhjqC3hCI7dK6d6j6O2xCF+PoCvpAqnzsX9QVtU8LxGNb ITwgu9v/u54kcDeS+MXPSaF9X1/KIrX3B02QZRdmEPYMcWsHeuJ+GtgYLux/Vz/FJnw7 FoQYJGgomwtB911ZYiXqQQtcASo2sKnAa1HUEqS78/2o11nERuklPkPJJPNs/yxA2e5B +MWMvTTVRFoQP1TRj5WioM/tJD3PnS3ZH7Dc4JsVfKVhbautFNBtBuUlH9UMsEpwHu2P kU3w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=yXVPuQbXIM7PPzxvuLOIBdECBu+SGT4tTjEn838vlUA=; b=PfiQsRmetGXAupR/PP9UvBPa57IKeTE4X/vlPJKObY6wCwJmjJElSK55JCc2Vc2O2u MrgwOd5leS2WyWUEA08m0Rfzqht/Ubp6yv7BewwjSy5pd90QVWZT8w9OsmRVtM8JH0rX 1XJFWAkLw+fmIsSJdSTT9kgzc5s4NKfgj4lcqEiE00k19Ro4/FLhvM9upc91bafP+QFf iEd5ZJySa8s7Q7XCqXElMOinM3KLY2vvxn4yjISLm99oe9KDAIavkXWe1eQinTXAAYDf GVXykb0CCkN3piSxsLwdiZI8VZWNQCQQ6VUjT5oRUqUPHbANoB+P1BwOdj5x3KuEhneG ImTQ== X-Gm-Message-State: AOUpUlG+U8ealGxh0xzF6T+v+DQcmX/T58vaUddo8bpdU5b2YW1y0kOP lxxl6vFkXD/7acl6Dssl/vL30zy6 X-Google-Smtp-Source: AAOMgpf0uztanZjZXugGNHw9csFqLeeDyrAsOVRq+1W0DfQRl4g7s9Nn+s5HStu4jqH6IIzqJaxH1Q== X-Received: by 2002:adf:fc86:: with SMTP id g6-v6mr213370wrr.216.1531345550260; Wed, 11 Jul 2018 14:45:50 -0700 (PDT) Received: from bidouze.dev.6wind.com. (host.78.145.23.62.rev.coltfrance.com. [62.23.145.78]) by smtp.gmail.com with ESMTPSA id h5-v6sm10550936wrr.19.2018.07.11.14.45.49 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 11 Jul 2018 14:45:49 -0700 (PDT) From: Gaetan Rivet To: dev@dpdk.org Cc: Gaetan Rivet Date: Wed, 11 Jul 2018 23:45:00 +0200 Message-Id: <806fcb35c84d6e8c0f8479c7714a1d8505b5d440.1531345404.git.gaetan.rivet@6wind.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: References: Subject: [dpdk-dev] [PATCH v11 10/25] eal/dev: implement device iteration initialization 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: Wed, 11 Jul 2018 21:45:51 -0000 Parse a device description. Split this description in their relevant part for each layers. No dynamic allocation is performed. Signed-off-by: Gaetan Rivet --- lib/Makefile | 1 + lib/librte_eal/bsdapp/eal/Makefile | 1 + lib/librte_eal/common/eal_common_dev.c | 55 +++++++++++++++++++++++++ lib/librte_eal/common/include/rte_dev.h | 24 +++++++++++ lib/librte_eal/linuxapp/eal/Makefile | 1 + lib/librte_eal/rte_eal_version.map | 1 + 6 files changed, 83 insertions(+) diff --git a/lib/Makefile b/lib/Makefile index 8a65525cd..afa604e20 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -7,6 +7,7 @@ DIRS-y += librte_compat DIRS-$(CONFIG_RTE_LIBRTE_KVARGS) += librte_kvargs DEPDIRS-librte_kvargs := librte_compat DIRS-$(CONFIG_RTE_LIBRTE_EAL) += librte_eal +DEPDIRS-librte_eal := librte_kvargs DIRS-$(CONFIG_RTE_LIBRTE_PCI) += librte_pci DEPDIRS-librte_pci := librte_eal DIRS-$(CONFIG_RTE_LIBRTE_RING) += librte_ring diff --git a/lib/librte_eal/bsdapp/eal/Makefile b/lib/librte_eal/bsdapp/eal/Makefile index b0a1c880a..67b10ae0d 100644 --- a/lib/librte_eal/bsdapp/eal/Makefile +++ b/lib/librte_eal/bsdapp/eal/Makefile @@ -18,6 +18,7 @@ CFLAGS += $(WERROR_FLAGS) -O3 LDLIBS += -lexecinfo LDLIBS += -lpthread LDLIBS += -lgcc_s +LDLIBS += -lrte_kvargs EXPORT_MAP := ../../rte_eal_version.map diff --git a/lib/librte_eal/common/eal_common_dev.c b/lib/librte_eal/common/eal_common_dev.c index ce4b51469..63e329bd8 100644 --- a/lib/librte_eal/common/eal_common_dev.c +++ b/lib/librte_eal/common/eal_common_dev.c @@ -10,9 +10,12 @@ #include #include +#include #include #include #include +#include +#include #include #include #include @@ -343,3 +346,55 @@ dev_callback_process(char *device_name, enum rte_dev_event_type event) } rte_spinlock_unlock(&dev_event_lock); } + +__rte_experimental +int +rte_dev_iterator_init(struct rte_dev_iterator *it, + const char *dev_str) +{ + struct rte_devargs devargs; + struct rte_class *cls = NULL; + struct rte_bus *bus = NULL; + + /* Having both bus_str and cls_str NULL is illegal, + * marking this iterator as invalid unless + * everything goes well. + */ + it->bus_str = NULL; + it->cls_str = NULL; + + devargs.data = dev_str; + if (rte_devargs_layers_parse(&devargs, dev_str)) + goto get_out; + + bus = devargs.bus; + cls = devargs.cls; + /* The string should have at least + * one layer specified. + */ + if (bus == NULL && cls == NULL) { + RTE_LOG(ERR, EAL, + "Either bus or class must be specified.\n"); + rte_errno = EINVAL; + goto get_out; + } + if (bus != NULL && bus->dev_iterate == NULL) { + RTE_LOG(ERR, EAL, "Bus %s not supported\n", bus->name); + rte_errno = ENOTSUP; + goto get_out; + } + if (cls != NULL && cls->dev_iterate == NULL) { + RTE_LOG(ERR, EAL, "Class %s not supported\n", cls->name); + rte_errno = ENOTSUP; + goto get_out; + } + it->bus_str = devargs.bus_str; + it->cls_str = devargs.cls_str; + it->dev_str = dev_str; + it->bus = bus; + it->cls = cls; + it->device = NULL; + it->class_device = NULL; +get_out: + return -rte_errno; +} diff --git a/lib/librte_eal/common/include/rte_dev.h b/lib/librte_eal/common/include/rte_dev.h index 49000abac..fdc812ff8 100644 --- a/lib/librte_eal/common/include/rte_dev.h +++ b/lib/librte_eal/common/include/rte_dev.h @@ -331,6 +331,30 @@ typedef void *(*rte_dev_iterate_t)(const void *start, const char *devstr, const struct rte_dev_iterator *it); +/** + * Initializes a device iterator. + * + * This iterator allows accessing a list of devices matching a criteria. + * The device matching is made among all buses and classes currently registered, + * filtered by the device description given as parameter. + * + * This function will not allocate any memory. It is safe to stop the + * iteration at any moment and let the iterator go out of context. + * + * @param it + * Device iterator handle. + * + * @param str + * Device description string. + * + * @return + * 0 on successful initialization. + * <0 on error. + */ +__rte_experimental +int +rte_dev_iterator_init(struct rte_dev_iterator *it, const char *str); + #ifdef __cplusplus } #endif diff --git a/lib/librte_eal/linuxapp/eal/Makefile b/lib/librte_eal/linuxapp/eal/Makefile index babc8617a..885c48110 100644 --- a/lib/librte_eal/linuxapp/eal/Makefile +++ b/lib/librte_eal/linuxapp/eal/Makefile @@ -27,6 +27,7 @@ LDLIBS += -lrt ifeq ($(CONFIG_RTE_EAL_NUMA_AWARE_HUGEPAGES),y) LDLIBS += -lnuma endif +LDLIBS += -lrte_kvargs # specific to linuxapp exec-env SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) := eal.c diff --git a/lib/librte_eal/rte_eal_version.map b/lib/librte_eal/rte_eal_version.map index 19d36b4c7..ac04120d6 100644 --- a/lib/librte_eal/rte_eal_version.map +++ b/lib/librte_eal/rte_eal_version.map @@ -251,6 +251,7 @@ EXPERIMENTAL { rte_dev_event_callback_unregister; rte_dev_event_monitor_start; rte_dev_event_monitor_stop; + rte_dev_iterator_init; rte_devargs_add; rte_devargs_dump; rte_devargs_insert; -- 2.18.0