pci: support class id probing

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

diff --git a/lib/librte_eal/linuxapp/eal/eal_pci.c b/lib/librte_eal/linuxapp/eal/eal_pci.c
index 5041228..e6990ba 100644 (file)
--- a/lib/librte_eal/linuxapp/eal/eal_pci.c
+++ b/lib/librte_eal/linuxapp/eal/eal_pci.c
@@ -306,6 +306,16 @@ pci_scan_one(const char *dirname, uint16_t domain, uint8_t bus,
        }
        dev->id.subsystem_device_id = (uint16_t)tmp;
 
+       /* get class_id */
+       snprintf(filename, sizeof(filename), "%s/class",
+                dirname);
+       if (eal_parse_sysfs_value(filename, &tmp) < 0) {
+               free(dev);
+               return -1;
+       }
+       /* the least 24 bits are valid: class, subclass, program interface */
+       dev->id.class_id = (uint32_t)tmp & RTE_CLASS_ANY_ID;
+
        /* get max_vfs */
        dev->max_vfs = 0;
        snprintf(filename, sizeof(filename), "%s/max_vfs", dirname);