From cbf10af6ded52f42c68f9d01317750cb94204c66 Mon Sep 17 00:00:00 2001 From: Gaetan Rivet Date: Thu, 26 Oct 2017 12:05:56 +0200 Subject: [PATCH] pci: avoid inlining functions Parsing operations should not happen in performance critical sections. Headers should not propose implementations unless duly required. Signed-off-by: Gaetan Rivet --- lib/librte_eal/common/eal_common_pci.c | 68 ++++++++++++++++++++++++ lib/librte_eal/common/include/rte_pci.h | 69 +++---------------------- lib/librte_eal/rte_eal_version.map | 4 ++ 3 files changed, 78 insertions(+), 63 deletions(-) diff --git a/lib/librte_eal/common/eal_common_pci.c b/lib/librte_eal/common/eal_common_pci.c index fb92ee7b9b..54931d1e54 100644 --- a/lib/librte_eal/common/eal_common_pci.c +++ b/lib/librte_eal/common/eal_common_pci.c @@ -87,6 +87,74 @@ static struct rte_devargs *pci_devargs_lookup(struct rte_pci_device *dev) return NULL; } +/* Macro used by pci addr parsing functions. **/ +#define GET_PCIADDR_FIELD(in, fd, lim, dlm) \ +do { \ + unsigned long val; \ + char *end; \ + errno = 0; \ + val = strtoul((in), &end, 16); \ + if (errno != 0 || end[0] != (dlm) || val > (lim)) \ + return -EINVAL; \ + (fd) = (typeof (fd))val; \ + (in) = end + 1; \ +} while(0) + + +int +eal_parse_pci_BDF(const char *input, struct rte_pci_addr *dev_addr) +{ + dev_addr->domain = 0; + GET_PCIADDR_FIELD(input, dev_addr->bus, UINT8_MAX, ':'); + GET_PCIADDR_FIELD(input, dev_addr->devid, UINT8_MAX, '.'); + GET_PCIADDR_FIELD(input, dev_addr->function, UINT8_MAX, 0); + return 0; +} + +int +eal_parse_pci_DomBDF(const char *input, struct rte_pci_addr *dev_addr) +{ + GET_PCIADDR_FIELD(input, dev_addr->domain, UINT16_MAX, ':'); + GET_PCIADDR_FIELD(input, dev_addr->bus, UINT8_MAX, ':'); + GET_PCIADDR_FIELD(input, dev_addr->devid, UINT8_MAX, '.'); + GET_PCIADDR_FIELD(input, dev_addr->function, UINT8_MAX, 0); + return 0; +} + +#undef GET_PCIADDR_FIELD + +void +rte_pci_device_name(const struct rte_pci_addr *addr, + char *output, size_t size) +{ + RTE_VERIFY(size >= PCI_PRI_STR_SIZE); + RTE_VERIFY(snprintf(output, size, PCI_PRI_FMT, + addr->domain, addr->bus, + addr->devid, addr->function) >= 0); +} + +int +rte_eal_compare_pci_addr(const struct rte_pci_addr *addr, + const struct rte_pci_addr *addr2) +{ + uint64_t dev_addr, dev_addr2; + + if ((addr == NULL) || (addr2 == NULL)) + return -1; + + dev_addr = ((uint64_t)addr->domain << 24) | + (addr->bus << 16) | (addr->devid << 8) | addr->function; + dev_addr2 = ((uint64_t)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; +} + void pci_name_set(struct rte_pci_device *dev) { diff --git a/lib/librte_eal/common/include/rte_pci.h b/lib/librte_eal/common/include/rte_pci.h index 1c5f469a4d..a366f3f54c 100644 --- a/lib/librte_eal/common/include/rte_pci.h +++ b/lib/librte_eal/common/include/rte_pci.h @@ -240,19 +240,6 @@ struct mapped_pci_resource { /** mapped pci device list */ TAILQ_HEAD(mapped_pci_res_list, mapped_pci_resource); -/**< Internal use only - Macro used by pci addr parsing functions **/ -#define GET_PCIADDR_FIELD(in, fd, lim, dlm) \ -do { \ - unsigned long val; \ - char *end; \ - errno = 0; \ - val = strtoul((in), &end, 16); \ - if (errno != 0 || end[0] != (dlm) || val > (lim)) \ - return -EINVAL; \ - (fd) = (typeof (fd))val; \ - (in) = end + 1; \ -} while(0) - /** * Utility function to produce a PCI Bus-Device-Function value * given a string representation. Assumes that the BDF is provided without @@ -266,15 +253,7 @@ do { \ * @return * 0 on success, negative on error. */ -static inline int -eal_parse_pci_BDF(const char *input, struct rte_pci_addr *dev_addr) -{ - dev_addr->domain = 0; - GET_PCIADDR_FIELD(input, dev_addr->bus, UINT8_MAX, ':'); - GET_PCIADDR_FIELD(input, dev_addr->devid, UINT8_MAX, '.'); - GET_PCIADDR_FIELD(input, dev_addr->function, UINT8_MAX, 0); - return 0; -} +int eal_parse_pci_BDF(const char *input, struct rte_pci_addr *dev_addr); /** * Utility function to produce a PCI Bus-Device-Function value @@ -288,16 +267,7 @@ eal_parse_pci_BDF(const char *input, struct rte_pci_addr *dev_addr) * @return * 0 on success, negative on error. */ -static inline int -eal_parse_pci_DomBDF(const char *input, struct rte_pci_addr *dev_addr) -{ - GET_PCIADDR_FIELD(input, dev_addr->domain, UINT16_MAX, ':'); - GET_PCIADDR_FIELD(input, dev_addr->bus, UINT8_MAX, ':'); - GET_PCIADDR_FIELD(input, dev_addr->devid, UINT8_MAX, '.'); - GET_PCIADDR_FIELD(input, dev_addr->function, UINT8_MAX, 0); - return 0; -} -#undef GET_PCIADDR_FIELD +int eal_parse_pci_DomBDF(const char *input, struct rte_pci_addr *dev_addr); /** * Utility function to write a pci device name, this device name can later be @@ -311,17 +281,9 @@ eal_parse_pci_DomBDF(const char *input, struct rte_pci_addr *dev_addr) * @param size * The output buffer size */ -static inline void -rte_pci_device_name(const struct rte_pci_addr *addr, - char *output, size_t size) -{ - RTE_VERIFY(size >= PCI_PRI_STR_SIZE); - RTE_VERIFY(snprintf(output, size, PCI_PRI_FMT, - addr->domain, addr->bus, - addr->devid, addr->function) >= 0); -} +void rte_pci_device_name(const struct rte_pci_addr *addr, char *output, + size_t size); -/* Compare two PCI device addresses. */ /** * Utility function to compare two PCI device addresses. * @@ -334,27 +296,8 @@ rte_pci_device_name(const struct rte_pci_addr *addr, * Positive on addr is greater than addr2. * Negative on addr is less than addr2, or error. */ -static inline int -rte_eal_compare_pci_addr(const struct rte_pci_addr *addr, - const struct rte_pci_addr *addr2) -{ - uint64_t dev_addr, dev_addr2; - - if ((addr == NULL) || (addr2 == NULL)) - return -1; - - dev_addr = ((uint64_t)addr->domain << 24) | - (addr->bus << 16) | (addr->devid << 8) | addr->function; - dev_addr2 = ((uint64_t)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; -} +int rte_eal_compare_pci_addr(const struct rte_pci_addr *addr, + const struct rte_pci_addr *addr2); /** * Scan the content of the PCI bus, and the devices in the devices diff --git a/lib/librte_eal/rte_eal_version.map b/lib/librte_eal/rte_eal_version.map index 262211a5cd..f22869aee2 100644 --- a/lib/librte_eal/rte_eal_version.map +++ b/lib/librte_eal/rte_eal_version.map @@ -241,8 +241,11 @@ EXPERIMENTAL { DPDK_17.11 { global: + eal_parse_pci_BDF; + eal_parse_pci_DomBDF; rte_eal_create_uio_dev; rte_bus_get_iommu_class; + rte_eal_compare_pci_addr; rte_eal_has_pci; rte_eal_iova_mode; rte_eal_mbuf_default_mempool_ops; @@ -250,6 +253,7 @@ DPDK_17.11 { rte_eal_vfio_intr_mode; rte_lcore_has_role; rte_memcpy_ptr; + rte_pci_device_name; rte_pci_get_iommu_class; rte_pci_match; vfio_enable;