tailq: move to dynamic tailq

[dpdk.git] / lib / librte_eal / bsdapp / eal / eal_pci.c

diff --git a/lib/librte_eal/bsdapp/eal/eal_pci.c b/lib/librte_eal/bsdapp/eal/eal_pci.c
index 74ecce7..3a0fda5 100644 (file)
--- a/lib/librte_eal/bsdapp/eal/eal_pci.c
+++ b/lib/librte_eal/bsdapp/eal/eal_pci.c
@@ -58,7 +58,6 @@
 #include <rte_launch.h>
 #include <rte_memory.h>
 #include <rte_memzone.h>
-#include <rte_tailq.h>
 #include <rte_eal.h>
 #include <rte_eal_memconfig.h>
 #include <rte_per_lcore.h>
@@ -108,6 +107,11 @@ TAILQ_HEAD(uio_res_list, uio_resource);
 
 static struct uio_res_list *uio_res_list = NULL;
 
+static struct rte_tailq_elem rte_pci_tailq = {
+       .name = "PCI_RESOURCE_LIST",
+};
+EAL_REGISTER_TAILQ(rte_pci_tailq)
+
 /* unbind kernel driver for this device */
 static int
 pci_unbind_kernel_driver(struct rte_pci_device *dev __rte_unused)
@@ -270,20 +274,6 @@ 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)
@@ -356,13 +346,24 @@ pci_scan_one(int dev_pci_fd, struct pci_conf *conf)
        }
        else {
                struct rte_pci_device *dev2 = NULL;
+               int ret;
 
                TAILQ_FOREACH(dev2, &pci_device_list, next) {
-                       if (pci_addr_comparison(&dev->addr, &dev2->addr))
+                       ret = rte_eal_compare_pci_addr(&dev->addr, &dev2->addr);
+                       if (ret > 0)
                                continue;
-                       else {
+                       else if (ret < 0) {
                                TAILQ_INSERT_BEFORE(dev2, dev, next);
                                return 0;
+                       } else { /* already registered */
+                               /* update pt_driver */
+                               dev2->pt_driver = dev->pt_driver;
+                               dev2->max_vfs = dev->max_vfs;
+                               memmove(dev2->mem_resource,
+                                       dev->mem_resource,
+                                       sizeof(dev->mem_resource));
+                               free(dev);
+                               return 0;
                        }
                }
                TAILQ_INSERT_TAIL(&pci_device_list, dev, next);
@@ -382,7 +383,7 @@ skipdev:
 static int
 pci_scan(void)
 {
-       int fd = -1;
+       int fd;
        unsigned dev_count = 0;
        struct pci_conf matches[16];
        struct pci_conf_io conf_io = {
@@ -496,7 +497,7 @@ rte_eal_pci_init(void)
 {
        TAILQ_INIT(&pci_driver_list);
        TAILQ_INIT(&pci_device_list);
-       uio_res_list = RTE_TAILQ_RESERVE_BY_IDX(RTE_TAILQ_PCI, uio_res_list);
+       uio_res_list = RTE_TAILQ_CAST(rte_pci_tailq.head, uio_res_list);
 
        /* for debug purposes, PCI can be disabled */
        if (internal_config.no_pci)