From: Gaetan Rivet <gaetan.rivet@6wind.com>
Date: Fri, 7 Jul 2017 00:03:12 +0000 (+0200)
Subject: devargs: parse bus info
X-Git-Tag: spdx-start~2564
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=47828c5f3bc3;p=dpdk.git

devargs: parse bus info

Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
Acked-by: Shreyansh Jain <shreyansh.jain@nxp.com>
---

diff --git a/lib/librte_eal/common/eal_common_devargs.c b/lib/librte_eal/common/eal_common_devargs.c
index ffa8ad96f9..2e97d798a6 100644
--- a/lib/librte_eal/common/eal_common_devargs.c
+++ b/lib/librte_eal/common/eal_common_devargs.c
@@ -78,12 +78,20 @@ rte_eal_parse_devargs_str(const char *devargs_str,
 	return 0;
 }
 
+static int
+bus_name_cmp(const struct rte_bus *bus, const void *name)
+{
+	return strncmp(bus->name, name, strlen(bus->name));
+}
+
 /* store a whitelist parameter for later parsing */
 int
 rte_eal_devargs_add(enum rte_devtype devtype, const char *devargs_str)
 {
 	struct rte_devargs *devargs = NULL;
-	char *buf = NULL;
+	struct rte_bus *bus = NULL;
+	char *dev = NULL;
+	const char *devname;
 	int ret;
 
 	/* use malloc instead of rte_malloc as it's called early at init */
@@ -94,34 +102,51 @@ rte_eal_devargs_add(enum rte_devtype devtype, const char *devargs_str)
 	memset(devargs, 0, sizeof(*devargs));
 	devargs->type = devtype;
 
-	if (rte_eal_parse_devargs_str(devargs_str, &buf, &devargs->args))
+	if (rte_eal_parse_devargs_str(devargs_str, &dev, &devargs->args))
 		goto fail;
+	devname = dev;
+	do {
+		bus = rte_bus_find(bus, bus_name_cmp, dev);
+		if (bus == NULL)
+			break;
+		devname = dev + strlen(bus->name) + 1;
+		if (rte_bus_find_by_device_name(devname) == bus)
+			break;
+		devname = dev;
+	} while (1);
+	if (bus == NULL) {
+		bus = rte_bus_find_by_device_name(devname);
+		if (bus == NULL) {
+			fprintf(stderr, "ERROR: failed to parse bus info from device declaration\n");
+			goto fail;
+		}
+	}
+	devargs->bus = bus;
 
 	switch (devargs->type) {
 	case RTE_DEVTYPE_WHITELISTED_PCI:
 	case RTE_DEVTYPE_BLACKLISTED_PCI:
 		/* try to parse pci identifier */
-		if (eal_parse_pci_BDF(buf, &devargs->pci.addr) != 0 &&
-		    eal_parse_pci_DomBDF(buf, &devargs->pci.addr) != 0)
+		if (bus->parse(devname, &devargs->pci.addr) != 0)
 			goto fail;
 
 		break;
 	case RTE_DEVTYPE_VIRTUAL:
 		/* save driver name */
 		ret = snprintf(devargs->virt.drv_name,
-			       sizeof(devargs->virt.drv_name), "%s", buf);
+			       sizeof(devargs->virt.drv_name), "%s", devname);
 		if (ret < 0 || ret >= (int)sizeof(devargs->virt.drv_name))
 			goto fail;
 
 		break;
 	}
 
-	free(buf);
+	free(dev);
 	TAILQ_INSERT_TAIL(&devargs_list, devargs, next);
 	return 0;
 
 fail:
-	free(buf);
+	free(dev);
 	if (devargs) {
 		free(devargs->args);
 		free(devargs);
diff --git a/lib/librte_eal/common/eal_common_vdev.c b/lib/librte_eal/common/eal_common_vdev.c
index 2250b8f2e4..a985294649 100644
--- a/lib/librte_eal/common/eal_common_vdev.c
+++ b/lib/librte_eal/common/eal_common_vdev.c
@@ -177,6 +177,7 @@ alloc_devargs(const char *name, const char *args)
 		return NULL;
 
 	devargs->type = RTE_DEVTYPE_VIRTUAL;
+	devargs->bus = rte_bus_find_by_name("vdev");
 	if (args)
 		devargs->args = strdup(args);
 
@@ -289,12 +290,13 @@ vdev_scan(void)
 {
 	struct rte_vdev_device *dev;
 	struct rte_devargs *devargs;
+	struct rte_bus *vbus;
 
 	/* for virtual devices we scan the devargs_list populated via cmdline */
-
+	vbus = rte_bus_find_by_name("vdev");
 	TAILQ_FOREACH(devargs, &devargs_list, next) {
 
-		if (devargs->type != RTE_DEVTYPE_VIRTUAL)
+		if (devargs->bus != vbus)
 			continue;
 
 		dev = find_vdev(devargs->virt.drv_name);
diff --git a/lib/librte_eal/common/include/rte_devargs.h b/lib/librte_eal/common/include/rte_devargs.h
index b11cbfca3c..6014853389 100644
--- a/lib/librte_eal/common/include/rte_devargs.h
+++ b/lib/librte_eal/common/include/rte_devargs.h
@@ -51,6 +51,7 @@ extern "C" {
 #include <stdio.h>
 #include <sys/queue.h>
 #include <rte_pci.h>
+#include <rte_bus.h>
 
 /**
  * Type of generic device
@@ -89,6 +90,8 @@ struct rte_devargs {
 			char drv_name[RTE_DEV_NAME_MAX_LEN];
 		} virt;
 	};
+	/** Bus handle for the device. */
+	struct rte_bus *bus;
 	/** Arguments string as given by user or "" for no argument. */
 	char *args;
 };