[PATCH v3 10/10] devargs: rename legacy API

[Gaetan Rivet <gaetan.rivet@6wind.com>]

This previous symbols were deprecated for two releases.
They are now marked as such and cannot be used anymore.

They are replaced by ones respecting the new namespace that are marked
experimental.

As a result, eth_dev attach and detach is slightly reworked to follow
the changes.

Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
---
 app/test-pmd/cmdline.c                      |  2 +-
 drivers/net/vdev_netvsc/vdev_netvsc.c       |  2 +-
 examples/bond/Makefile                      |  1 +
 examples/bond/main.c                        |  2 +-
 lib/librte_eal/common/eal_common_devargs.c  |  9 +++--
 lib/librte_eal/common/eal_common_options.c  |  2 +-
 lib/librte_eal/common/include/rte_devargs.h | 54 +++++++++++++++++++++++++++++
 lib/librte_eal/rte_eal_version.map          |  3 ++
 lib/librte_ether/rte_ethdev.c               | 44 +++++++++++------------
 test/test/commands.c                        |  2 +-
 10 files changed, 89 insertions(+), 32 deletions(-)

diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index 40b31ad7e..6e6b4e2e2 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -8621,7 +8621,7 @@ static void cmd_dump_parsed(void *parsed_result,
 	else if (!strcmp(res->dump, "dump_mempool"))
 		rte_mempool_list_dump(stdout);
 	else if (!strcmp(res->dump, "dump_devargs"))
-		rte_eal_devargs_dump(stdout);
+		rte_devargs_dump(stdout);
 	else if (!strcmp(res->dump, "dump_log_types"))
 		rte_log_dump(stdout);
 }
diff --git a/drivers/net/vdev_netvsc/vdev_netvsc.c b/drivers/net/vdev_netvsc/vdev_netvsc.c
index b0bbce750..f4e88689f 100644
--- a/drivers/net/vdev_netvsc/vdev_netvsc.c
+++ b/drivers/net/vdev_netvsc/vdev_netvsc.c
@@ -740,7 +740,7 @@ vdev_netvsc_scan_callback(__rte_unused void *arg)
 		vdev_netvsc_cmp_rte_device, VDEV_NETVSC_DRIVER_NAME);
 	if (dev)
 		return;
-	if (rte_eal_devargs_add(RTE_DEVTYPE_VIRTUAL, VDEV_NETVSC_DRIVER_NAME))
+	if (rte_devargs_add(RTE_DEVTYPE_VIRTUAL, VDEV_NETVSC_DRIVER_NAME))
 		DRV_LOG(ERR, "unable to add netvsc devargs.");
 }
 
diff --git a/examples/bond/Makefile b/examples/bond/Makefile
index 44d10d4f5..ce3f907de 100644
--- a/examples/bond/Makefile
+++ b/examples/bond/Makefile
@@ -59,6 +59,7 @@ CFLAGS_main.o += -Wno-return-type
 endif
 
 CFLAGS += -O3
+CFLAGS += -DALLOW_EXPERIMENTAL_API
 
 ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
 LDLIBS += -lrte_pmd_bond
diff --git a/examples/bond/main.c b/examples/bond/main.c
index 455f108ee..ede1c591e 100644
--- a/examples/bond/main.c
+++ b/examples/bond/main.c
@@ -742,7 +742,7 @@ main(int argc, char *argv[])
 
 	/* init EAL */
 	ret = rte_eal_init(argc, argv);
-	rte_eal_devargs_dump(stdout);
+	rte_devargs_dump(stdout);
 	if (ret < 0)
 		rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
 	argc -= ret;
diff --git a/lib/librte_eal/common/eal_common_devargs.c b/lib/librte_eal/common/eal_common_devargs.c
index 24d0f6f44..b0434158b 100644
--- a/lib/librte_eal/common/eal_common_devargs.c
+++ b/lib/librte_eal/common/eal_common_devargs.c
@@ -137,8 +137,9 @@ rte_devargs_insert(struct rte_devargs *da)
 }
 
 /* store a whitelist parameter for later parsing */
+__rte_experimental
 int
-rte_eal_devargs_add(enum rte_devtype devtype, const char *devargs_str)
+rte_devargs_add(enum rte_devtype devtype, const char *devargs_str)
 {
 	struct rte_devargs *devargs = NULL;
 	struct rte_bus *bus = NULL;
@@ -192,8 +193,9 @@ rte_devargs_remove(const char *busname, const char *devname)
 }
 
 /* count the number of devices of a specified type */
+__rte_experimental
 unsigned int
-rte_eal_devargs_type_count(enum rte_devtype devtype)
+rte_devargs_type_count(enum rte_devtype devtype)
 {
 	struct rte_devargs *devargs;
 	unsigned int count = 0;
@@ -207,8 +209,9 @@ rte_eal_devargs_type_count(enum rte_devtype devtype)
 }
 
 /* dump the user devices on the console */
+__rte_experimental
 void
-rte_eal_devargs_dump(FILE *f)
+rte_devargs_dump(FILE *f)
 {
 	struct rte_devargs *devargs;
 
diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c
index 9f2f8d25a..63df21224 100644
--- a/lib/librte_eal/common/eal_common_options.c
+++ b/lib/librte_eal/common/eal_common_options.c
@@ -151,7 +151,7 @@ eal_option_device_parse(void)
 
 	TAILQ_FOREACH_SAFE(devopt, &devopt_list, next, tmp) {
 		if (ret == 0) {
-			ret = rte_eal_devargs_add(devopt->type, devopt->arg);
+			ret = rte_devargs_add(devopt->type, devopt->arg);
 			if (ret)
 				RTE_LOG(ERR, EAL, "Unable to parse device '%s'\n",
 					devopt->arg);
diff --git a/lib/librte_eal/common/include/rte_devargs.h b/lib/librte_eal/common/include/rte_devargs.h
index 07a4701b2..3ba1f2084 100644
--- a/lib/librte_eal/common/include/rte_devargs.h
+++ b/lib/librte_eal/common/include/rte_devargs.h
@@ -60,6 +60,7 @@ struct rte_devargs {
 };
 
 /**
+ * @deprecated
  * Parse a devargs string.
  *
  * For PCI devices, the format of arguments string is "PCI_ADDR" or
@@ -84,6 +85,7 @@ struct rte_devargs {
  *   - 0 on success
  *   - A negative value on error
  */
+__rte_deprecated
 int rte_eal_parse_devargs_str(const char *devargs_str,
 				char **drvname, char **drvargs);
 
@@ -146,6 +148,32 @@ rte_devargs_insert(struct rte_devargs *da);
  *   - 0 on success
  *   - A negative value on error
  */
+__rte_experimental
+int rte_devargs_add(enum rte_devtype devtype, const char *devargs_str);
+
+/**
+ * @deprecated
+ * Add a device to the user device list
+ *
+ * The format is
+ *
+ *     bus:device_identifier,arg1=val1,arg2=val2
+ *
+ * Examples:
+ *
+ *     pci:0000:05.00.0,arg=val
+ *     vdev:net_ring0
+ *
+ * @param devtype
+ *   The type of the device.
+ * @param devargs_str
+ *   The arguments as given by the user.
+ *
+ * @return
+ *   - 0 on success
+ *   - A negative value on error
+ */
+__rte_deprecated
 int rte_eal_devargs_add(enum rte_devtype devtype, const char *devargs_str);
 
 /**
@@ -177,6 +205,21 @@ int rte_devargs_remove(const char *busname,
  * @return
  *   The number of devices.
  */
+__rte_experimental
+unsigned int
+rte_devargs_type_count(enum rte_devtype devtype);
+
+/**
+ * @deprecated
+ * Count the number of user devices of a specified type
+ *
+ * @param devtype
+ *   The type of the devices to counted.
+ *
+ * @return
+ *   The number of devices.
+ */
+__rte_deprecated
 unsigned int
 rte_eal_devargs_type_count(enum rte_devtype devtype);
 
@@ -186,6 +229,17 @@ rte_eal_devargs_type_count(enum rte_devtype devtype);
  * @param f
  *   A pointer to a file for output
  */
+__rte_experimental
+void rte_devargs_dump(FILE *f);
+
+/**
+ * @deprecated
+ * This function dumps the list of user device and their arguments.
+ *
+ * @param f
+ *   A pointer to a file for output
+ */
+__rte_deprecated
 void rte_eal_devargs_dump(FILE *f);
 
 /**
diff --git a/lib/librte_eal/rte_eal_version.map b/lib/librte_eal/rte_eal_version.map
index 1e614f088..bc24237e1 100644
--- a/lib/librte_eal/rte_eal_version.map
+++ b/lib/librte_eal/rte_eal_version.map
@@ -214,10 +214,13 @@ EXPERIMENTAL {
 	global:
 
 	rte_eal_cleanup;
+	rte_devargs_add;
+	rte_devargs_dump;
 	rte_devargs_insert;
 	rte_devargs_next;
 	rte_devargs_parse;
 	rte_devargs_remove;
+	rte_devargs_type_count;
 	rte_eal_hotplug_add;
 	rte_eal_hotplug_remove;
 	rte_eal_mbuf_user_pool_ops;
diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index 0590f0c10..027d5b535 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -596,27 +596,26 @@ eth_err(uint16_t port_id, int ret)
 int
 rte_eth_dev_attach(const char *devargs, uint16_t *port_id)
 {
-	int ret = -1;
 	int current = rte_eth_dev_count();
-	char *name = NULL;
-	char *args = NULL;
+	struct rte_devargs da = {0};
+	int ret = -1;
 
 	if ((devargs == NULL) || (port_id == NULL)) {
 		ret = -EINVAL;
 		goto err;
 	}
 
-	/* parse devargs, then retrieve device name and args */
-	if (rte_eal_parse_devargs_str(devargs, &name, &args))
+	/* parse devargs */
+	if (rte_devargs_parse(&da, "%s", devargs))
 		goto err;
 
-	ret = rte_eal_dev_attach(name, args);
+	ret = rte_eal_hotplug_add(da.bus->name, da.name, da.args);
 	if (ret < 0)
 		goto err;
 
 	/* no point looking at the port count if no port exists */
 	if (!rte_eth_dev_count()) {
-		RTE_LOG(ERR, EAL, "No port found for device (%s)\n", name);
+		RTE_LOG(ERR, EAL, "No port found for device (%s)\n", da.name);
 		ret = -1;
 		goto err;
 	}
@@ -633,45 +632,42 @@ rte_eth_dev_attach(const char *devargs, uint16_t *port_id)
 	ret = 0;
 
 err:
-	free(name);
-	free(args);
+	free(da.args);
 	return ret;
 }
 
 /* detach the device, then store the name of the device */
 int
-rte_eth_dev_detach(uint16_t port_id, char *name)
+rte_eth_dev_detach(uint16_t port_id, char *name __rte_unused)
 {
+	struct rte_device *dev;
+	struct rte_bus *bus;
 	uint32_t dev_flags;
 	int ret = -1;
 
 	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -EINVAL);
 
-	if (name == NULL) {
-		ret = -EINVAL;
-		goto err;
-	}
-
 	dev_flags = rte_eth_devices[port_id].data->dev_flags;
 	if (dev_flags & RTE_ETH_DEV_BONDED_SLAVE) {
 		RTE_LOG(ERR, EAL, "Port %" PRIu16 " is bonded, cannot detach\n",
 			port_id);
-		ret = -ENOTSUP;
-		goto err;
+		return -ENOTSUP;
 	}
 
-	snprintf(name, sizeof(rte_eth_devices[port_id].data->name),
-		 "%s", rte_eth_devices[port_id].data->name);
+	dev = rte_eth_devices[port_id].device;
+	if (dev == NULL)
+		return -EINVAL;
 
-	ret = rte_eal_dev_detach(rte_eth_devices[port_id].device);
+	bus = rte_bus_find_by_device(dev);
+	if (bus == NULL)
+		return -ENOENT;
+
+	ret = rte_eal_hotplug_remove(bus->name, dev->name);
 	if (ret < 0)
-		goto err;
+		return ret;
 
 	rte_eth_dev_release_port(&rte_eth_devices[port_id]);
 	return 0;
-
-err:
-	return ret;
 }
 
 static int
diff --git a/test/test/commands.c b/test/test/commands.c
index cf0b726bb..2ae78a3d0 100644
--- a/test/test/commands.c
+++ b/test/test/commands.c
@@ -132,7 +132,7 @@ static void cmd_dump_parsed(void *parsed_result,
 	else if (!strcmp(res->dump, "dump_mempool"))
 		rte_mempool_list_dump(stdout);
 	else if (!strcmp(res->dump, "dump_devargs"))
-		rte_eal_devargs_dump(stdout);
+		rte_devargs_dump(stdout);
 	else if (!strcmp(res->dump, "dump_log_types"))
 		rte_log_dump(stdout);
 	else if (!strcmp(res->dump, "dump_malloc_stats"))
-- 
2.11.0