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[219.106.231.132]) by mx.google.com with ESMTPSA id ky4sm3686872pbc.55.2014.10.29.01.50.01 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 29 Oct 2014 01:50:03 -0700 (PDT) From: Tetsuya Mukawa To: dev@dpdk.org Date: Wed, 29 Oct 2014 17:49:14 +0900 Message-Id: <1414572576-21371-4-git-send-email-mukawa@igel.co.jp> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1414572576-21371-1-git-send-email-mukawa@igel.co.jp> References: <1414572576-21371-1-git-send-email-mukawa@igel.co.jp> Cc: nakajima.yoshihiro@lab.ntt.co.jp, masutani.hitoshi@lab.ntt.co.jp Subject: [dpdk-dev] [RFC PATCH 03/25] eal/pci: Replace pci address comparison code by eal_compare_pci_addr X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 29 Oct 2014 08:41:13 -0000 This patch replaces pci_addr_comparison() and memcmp() of pci addresses by eal_compare_pci_addr(). Signed-off-by: Tetsuya Mukawa --- lib/librte_eal/bsdapp/eal/eal_pci.c | 16 +--------------- lib/librte_eal/common/eal_common_pci.c | 2 +- lib/librte_eal/common/include/rte_pci.h | 29 +++++++++++++++++++++++++++++ lib/librte_eal/linuxapp/eal/eal_pci.c | 16 +--------------- lib/librte_eal/linuxapp/eal/eal_pci_uio.c | 2 +- 5 files changed, 33 insertions(+), 32 deletions(-) diff --git a/lib/librte_eal/bsdapp/eal/eal_pci.c b/lib/librte_eal/bsdapp/eal/eal_pci.c index 54fcaf0..2576fa7 100644 --- a/lib/librte_eal/bsdapp/eal/eal_pci.c +++ b/lib/librte_eal/bsdapp/eal/eal_pci.c @@ -270,20 +270,6 @@ pci_uio_map_resource(struct rte_pci_device *dev) return (0); } -/* Compare two PCI device addresses. */ -static int -pci_addr_comparison(struct rte_pci_addr *addr, struct rte_pci_addr *addr2) -{ - uint64_t dev_addr = (addr->domain << 24) + (addr->bus << 16) + (addr->devid << 8) + addr->function; - uint64_t dev_addr2 = (addr2->domain << 24) + (addr2->bus << 16) + (addr2->devid << 8) + addr2->function; - - if (dev_addr > dev_addr2) - return 1; - else - return 0; -} - - /* Scan one pci sysfs entry, and fill the devices list from it. */ static int pci_scan_one(int dev_pci_fd, struct pci_conf *conf) @@ -358,7 +344,7 @@ pci_scan_one(int dev_pci_fd, struct pci_conf *conf) struct rte_pci_device *dev2 = NULL; TAILQ_FOREACH(dev2, &pci_device_list, next) { - if (pci_addr_comparison(&dev->addr, &dev2->addr)) + if (eal_compare_pci_addr(&dev->addr, &dev2->addr)) continue; else { TAILQ_INSERT_BEFORE(dev2, dev, next); diff --git a/lib/librte_eal/common/eal_common_pci.c b/lib/librte_eal/common/eal_common_pci.c index f3c7f71..f01f258 100644 --- a/lib/librte_eal/common/eal_common_pci.c +++ b/lib/librte_eal/common/eal_common_pci.c @@ -93,7 +93,7 @@ static struct rte_devargs *pci_devargs_lookup(struct rte_pci_device *dev) if (devargs->type != RTE_DEVTYPE_BLACKLISTED_PCI && devargs->type != RTE_DEVTYPE_WHITELISTED_PCI) continue; - if (!memcmp(&dev->addr, &devargs->pci.addr, sizeof(dev->addr))) + if (eal_compare_pci_addr(&dev->addr, &devargs->pci.addr)) return devargs; } return NULL; diff --git a/lib/librte_eal/common/include/rte_pci.h b/lib/librte_eal/common/include/rte_pci.h index b819539..fe374a8 100644 --- a/lib/librte_eal/common/include/rte_pci.h +++ b/lib/librte_eal/common/include/rte_pci.h @@ -261,6 +261,35 @@ eal_parse_pci_DomBDF(const char *input, struct rte_pci_addr *dev_addr) } #undef GET_PCIADDR_FIELD +/* Compare two PCI device addresses. */ +/** + * Utility function to compare two PCI device addresses. + * + * @param addr + * The PCI Bus-Device-Function address to compare + * @param addr2 + * The PCI Bus-Device-Function address to compare + * @return + * 0 on equal PCI address. + * Positive on addr is greater than addr2. + * Negative on addr is less than addr2. + */ +static inline int +eal_compare_pci_addr(struct rte_pci_addr *addr, struct rte_pci_addr *addr2) +{ + uint64_t dev_addr = (addr->domain << 24) + (addr->bus << 16) + + (addr->devid << 8) + addr->function; + uint64_t dev_addr2 = (addr2->domain << 24) + (addr2->bus << 16) + + (addr2->devid << 8) + addr2->function; + + if (dev_addr > dev_addr2) + return 1; + else if (dev_addr < dev_addr2) + return -1; + else + return 0; +} + /** * Probe the PCI bus for registered drivers. * diff --git a/lib/librte_eal/linuxapp/eal/eal_pci.c b/lib/librte_eal/linuxapp/eal/eal_pci.c index 5fe3961..862b93a 100644 --- a/lib/librte_eal/linuxapp/eal/eal_pci.c +++ b/lib/librte_eal/linuxapp/eal/eal_pci.c @@ -186,20 +186,6 @@ error: return -1; } -/* Compare two PCI device addresses. */ -static int -pci_addr_comparison(struct rte_pci_addr *addr, struct rte_pci_addr *addr2) -{ - uint64_t dev_addr = (addr->domain << 24) + (addr->bus << 16) + (addr->devid << 8) + addr->function; - uint64_t dev_addr2 = (addr2->domain << 24) + (addr2->bus << 16) + (addr2->devid << 8) + addr2->function; - - if (dev_addr > dev_addr2) - return 1; - else - return 0; -} - - /* Scan one pci sysfs entry, and fill the devices list from it. */ static int pci_scan_one(const char *dirname, uint16_t domain, uint8_t bus, @@ -292,7 +278,7 @@ pci_scan_one(const char *dirname, uint16_t domain, uint8_t bus, struct rte_pci_device *dev2 = NULL; TAILQ_FOREACH(dev2, &pci_device_list, next) { - if (pci_addr_comparison(&dev->addr, &dev2->addr)) + if (eal_compare_pci_addr(&dev->addr, &dev2->addr) != 0) continue; else { TAILQ_INSERT_BEFORE(dev2, dev, next); diff --git a/lib/librte_eal/linuxapp/eal/eal_pci_uio.c b/lib/librte_eal/linuxapp/eal/eal_pci_uio.c index 7e62266..f0deeba 100644 --- a/lib/librte_eal/linuxapp/eal/eal_pci_uio.c +++ b/lib/librte_eal/linuxapp/eal/eal_pci_uio.c @@ -120,7 +120,7 @@ pci_uio_map_secondary(struct rte_pci_device *dev) TAILQ_FOREACH(uio_res, pci_res_list, next) { /* skip this element if it doesn't match our PCI address */ - if (memcmp(&uio_res->pci_addr, &dev->addr, sizeof(dev->addr))) + if (eal_compare_pci_addr(&uio_res->pci_addr, &dev->addr)) continue; for (i = 0; i != uio_res->nb_maps; i++) { -- 1.9.1