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[62.23.145.78]) by smtp.gmail.com with ESMTPSA id m40sm2624808wrm.4.2017.06.07.16.56.28 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 07 Jun 2017 16:56:28 -0700 (PDT) From: Gaetan Rivet To: dev@dpdk.org Cc: Gaetan Rivet Date: Thu, 8 Jun 2017 01:56:07 +0200 Message-Id: X-Mailer: git-send-email 2.1.4 In-Reply-To: References: In-Reply-To: References: Subject: [dpdk-dev] [PATCH v4 7/9] bus: add helper to find a bus from a device name 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: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Find which bus should be able to parse this device name into an internal device representation. Signed-off-by: Gaetan Rivet --- lib/librte_eal/bsdapp/eal/rte_eal_version.map | 1 + lib/librte_eal/common/eal_common_bus.c | 15 +++++++++++++++ lib/librte_eal/common/include/rte_bus.h | 12 ++++++++++++ lib/librte_eal/linuxapp/eal/rte_eal_version.map | 1 + 4 files changed, 29 insertions(+) diff --git a/lib/librte_eal/bsdapp/eal/rte_eal_version.map b/lib/librte_eal/bsdapp/eal/rte_eal_version.map index 3517d74..04fa882 100644 --- a/lib/librte_eal/bsdapp/eal/rte_eal_version.map +++ b/lib/librte_eal/bsdapp/eal/rte_eal_version.map @@ -202,5 +202,6 @@ DPDK_17.08 { global: rte_bus_from_name; + rte_bus_from_dev; } DPDK_17.05; diff --git a/lib/librte_eal/common/eal_common_bus.c b/lib/librte_eal/common/eal_common_bus.c index 2b41ba2..bad1bd9 100644 --- a/lib/librte_eal/common/eal_common_bus.c +++ b/lib/librte_eal/common/eal_common_bus.c @@ -239,3 +239,18 @@ rte_bus_from_name(const char *str) return NULL; return rte_bus_find(bus_cmp_name, str); } + +static int +bus_can_parse(const struct rte_bus *bus, const void *_name) +{ + const char *name = _name; + + return !(bus->parse && bus->parse(name, NULL) == 0); +} + +/* find a bus capable of parsing a device description */ +struct rte_bus * +rte_bus_from_dev(const char *str) +{ + return rte_bus_find(bus_can_parse, str); +} diff --git a/lib/librte_eal/common/include/rte_bus.h b/lib/librte_eal/common/include/rte_bus.h index b236893..4bed780 100644 --- a/lib/librte_eal/common/include/rte_bus.h +++ b/lib/librte_eal/common/include/rte_bus.h @@ -276,6 +276,18 @@ struct rte_bus *rte_bus_find_by_device(const struct rte_device *dev); struct rte_bus *rte_bus_from_name(const char *str); /** + * Find a bus capable of identifying a device. + * + * @param str + * A device identifier (PCI address, virtual PMD name, ...). + * + * @return + * A valid bus handle if found. + * NULL if no bus is able to parse this device. + */ +struct rte_bus *rte_bus_from_dev(const char *str); + +/** * Helper for Bus registration. * The constructor has higher priority than PMD constructors. */ diff --git a/lib/librte_eal/linuxapp/eal/rte_eal_version.map b/lib/librte_eal/linuxapp/eal/rte_eal_version.map index 6607acc..a5127d6 100644 --- a/lib/librte_eal/linuxapp/eal/rte_eal_version.map +++ b/lib/librte_eal/linuxapp/eal/rte_eal_version.map @@ -206,5 +206,6 @@ DPDK_17.08 { global: rte_bus_from_name; + rte_bus_from_dev; } DPDK_17.05;