bus: fix driver registration

The bus name was stored with embedded double quotes.
Indeed the bus name is given with a string in a macro,
which is not used elsewhere.
These macros are useless because the buses are drivers,
so they must not have any API for the application writer.
The registration can be done with a hardcoded value without quotes.

There is another (small) benefit of not using macros for driver names:
it is to have a meaningful constructor function name.
For instance, it was businitfn_PCI_BUS_NAME instead of businitfn_pci.

The bus registration macro is also changed to use
the new RTE_INIT_PRIO macro, similar to RTE_INIT used for other drivers.
The priority is the highest (101) in order to be sure that the bus driver
is registered before its device drivers.

Fixes: 0fd1a0eaae19 ("pci: add bus driver")
Fixes: fea892e35f21 ("bus/vdev: use standard bus registration")
Fixes: 7e7df6d0a41d ("bus/fslmc: introduce fsl-mc bus driver")

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Reviewed-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
Acked-by: Shreyansh Jain <shreyansh.jain@nxp.com>

diff --git a/drivers/bus/fslmc/fslmc_bus.c b/drivers/bus/fslmc/fslmc_bus.c
index 88b969c..c5f2554 100644 (file)
--- a/drivers/bus/fslmc/fslmc_bus.c
+++ b/drivers/bus/fslmc/fslmc_bus.c
@@ -159,4 +159,4 @@ struct rte_fslmc_bus rte_fslmc_bus = {
        .driver_list = TAILQ_HEAD_INITIALIZER(rte_fslmc_bus.driver_list),
 };
 
-RTE_REGISTER_BUS(FSLMC_BUS_NAME, rte_fslmc_bus.bus);
+RTE_REGISTER_BUS(fslmc, rte_fslmc_bus.bus);

diff --git a/drivers/bus/fslmc/rte_fslmc.h b/drivers/bus/fslmc/rte_fslmc.h
index 040ab95..8f35278 100644 (file)
--- a/drivers/bus/fslmc/rte_fslmc.h
+++ b/drivers/bus/fslmc/rte_fslmc.h
@@ -56,9 +56,6 @@ extern "C" {
 #include <rte_dev.h>
 #include <rte_bus.h>
 
-/** Name of FSLMC Bus */
-#define FSLMC_BUS_NAME "FSLMC"
-
 struct rte_dpaa2_driver;
 
 /* DPAA2 Device and Driver lists for FSLMC bus */

diff --git a/lib/librte_eal/common/eal_common_bus.c b/lib/librte_eal/common/eal_common_bus.c
index 997009d..96eb4fd 100644 (file)
--- a/lib/librte_eal/common/eal_common_bus.c
+++ b/lib/librte_eal/common/eal_common_bus.c
@@ -92,7 +92,7 @@ rte_bus_probe(void)
        struct rte_bus *bus, *vbus = NULL;
 
        TAILQ_FOREACH(bus, &rte_bus_list, next) {
-               if (!strcmp(bus->name, "virtual")) {
+               if (!strcmp(bus->name, "vdev")) {
                        vbus = bus;
                        continue;
                }

diff --git a/lib/librte_eal/common/eal_common_dev.c b/lib/librte_eal/common/eal_common_dev.c
index 4ee52fd..32e12b5 100644 (file)
--- a/lib/librte_eal/common/eal_common_dev.c
+++ b/lib/librte_eal/common/eal_common_dev.c
@@ -74,7 +74,7 @@ int rte_eal_dev_attach(const char *name, const char *devargs)
                return -EINVAL;
        }
 
-       ret = rte_eal_hotplug_add("PCI", name, devargs);
+       ret = rte_eal_hotplug_add("pci", name, devargs);
        if (ret && ret != -EINVAL)
                return ret;
 

diff --git a/lib/librte_eal/common/eal_common_pci.c b/lib/librte_eal/common/eal_common_pci.c
index 15991b5..f3830a1 100644 (file)
--- a/lib/librte_eal/common/eal_common_pci.c
+++ b/lib/librte_eal/common/eal_common_pci.c
@@ -547,4 +547,4 @@ struct rte_pci_bus rte_pci_bus = {
        .driver_list = TAILQ_HEAD_INITIALIZER(rte_pci_bus.driver_list),
 };
 
-RTE_REGISTER_BUS(PCI_BUS_NAME, rte_pci_bus.bus);
+RTE_REGISTER_BUS(pci, rte_pci_bus.bus);

diff --git a/lib/librte_eal/common/eal_common_vdev.c b/lib/librte_eal/common/eal_common_vdev.c
index 9ec62f4..b3570f9 100644 (file)
--- a/lib/librte_eal/common/eal_common_vdev.c
+++ b/lib/librte_eal/common/eal_common_vdev.c
@@ -372,4 +372,4 @@ static struct rte_bus rte_vdev_bus = {
        .unplug = vdev_unplug,
 };
 
-RTE_REGISTER_BUS(VIRTUAL_BUS_NAME, rte_vdev_bus);
+RTE_REGISTER_BUS(vdev, rte_vdev_bus);

diff --git a/lib/librte_eal/common/include/rte_bus.h b/lib/librte_eal/common/include/rte_bus.h
index 2f1c911..773b0d7 100644 (file)
--- a/lib/librte_eal/common/include/rte_bus.h
+++ b/lib/librte_eal/common/include/rte_bus.h
@@ -256,7 +256,8 @@ struct rte_bus *rte_bus_find_by_name(const char *busname);
  * The constructor has higher priority than PMD constructors.
  */
 #define RTE_REGISTER_BUS(nm, bus) \
-static void __attribute__((constructor(101), used)) businitfn_ ##nm(void) \
+RTE_INIT_PRIO(businitfn_ ##nm, 101); \
+static void businitfn_ ##nm(void) \
 {\
        (bus).name = RTE_STR(nm);\
        rte_bus_register(&bus); \

diff --git a/lib/librte_eal/common/include/rte_eal.h b/lib/librte_eal/common/include/rte_eal.h
index abf020b..6b7c5ca 100644 (file)
--- a/lib/librte_eal/common/include/rte_eal.h
+++ b/lib/librte_eal/common/include/rte_eal.h
@@ -286,6 +286,9 @@ static inline int rte_gettid(void)
 #define RTE_INIT(func) \
 static void __attribute__((constructor, used)) func(void)
 
+#define RTE_INIT_PRIO(func, prio) \
+static void __attribute__((constructor(prio), used)) func(void)
+
 #ifdef __cplusplus
 }
 #endif

diff --git a/lib/librte_eal/common/include/rte_pci.h b/lib/librte_eal/common/include/rte_pci.h
index e416714..406d918 100644 (file)
--- a/lib/librte_eal/common/include/rte_pci.h
+++ b/lib/librte_eal/common/include/rte_pci.h
@@ -77,9 +77,6 @@ const char *pci_get_sysfs_path(void);
 /** Maximum number of PCI resources. */
 #define PCI_MAX_RESOURCE 6
 
-/** Name of PCI Bus */
-#define PCI_BUS_NAME "PCI"
-
 /* Forward declarations */
 struct rte_pci_device;
 struct rte_pci_driver;

diff --git a/lib/librte_eal/common/include/rte_vdev.h b/lib/librte_eal/common/include/rte_vdev.h
index 2d02c68..e6b678e 100644 (file)
--- a/lib/librte_eal/common/include/rte_vdev.h
+++ b/lib/librte_eal/common/include/rte_vdev.h
@@ -41,8 +41,6 @@ extern "C" {
 #include <rte_dev.h>
 #include <rte_devargs.h>
 
-#define VIRTUAL_BUS_NAME "virtual"
-
 struct rte_vdev_device {
        TAILQ_ENTRY(rte_vdev_device) next;      /**< Next attached vdev */
        struct rte_device device;               /**< Inherit core device */