[dpdk-dev] [PATCH v4] eal: Enable Port Hotplug as default in Linux and BSD

[Tetsuya Mukawa <mukawa@igel.co.jp>]

From: "Tetsuya.Mukawa" <mukawa@igel.co.jp>

This patch removes CONFIG_RTE_LIBRTE_EAL_HOTPLUG option, and enables it
as default in both Linux and BSD.
Also, to support port hotplug, rte_eal_pci_scan() and below missing
symbols should be exported to ethdev library.
 - rte_eal_parse_devargs_str()
 - rte_eal_pci_close_one()
 - rte_eal_pci_probe_one()
 - rte_eal_pci_scan()
 - rte_eal_vdev_init()
 - rte_eal_vdev_uninit()

Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
---
 config/common_bsdapp                          |  6 ------
 config/common_linuxapp                        |  5 -----
 lib/librte_eal/bsdapp/eal/eal_pci.c           |  6 +++---
 lib/librte_eal/bsdapp/eal/rte_eal_version.map |  6 ++++++
 lib/librte_eal/common/eal_common_dev.c        |  2 --
 lib/librte_eal/common/eal_common_pci.c        |  6 ------
 lib/librte_eal/common/eal_common_pci_uio.c    |  2 --
 lib/librte_eal/common/eal_private.h           |  2 --
 lib/librte_eal/common/include/rte_pci.h       |  2 --
 lib/librte_ether/rte_ethdev.c                 | 21 ---------------------
 10 files changed, 9 insertions(+), 49 deletions(-)

diff --git a/config/common_bsdapp b/config/common_bsdapp
index 464250b..c6e6e9c 100644
--- a/config/common_bsdapp
+++ b/config/common_bsdapp
@@ -121,12 +121,6 @@ CONFIG_RTE_LIBRTE_EAL_BSDAPP=y
 CONFIG_RTE_LIBRTE_EAL_LINUXAPP=n
 
 #
-# Compile Environment Abstraction Layer to support hotplug
-# So far, Hotplug functions only support linux
-#
-CONFIG_RTE_LIBRTE_EAL_HOTPLUG=n
-
-#
 # Compile Environment Abstraction Layer to support Vmware TSC map
 #
 CONFIG_RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT=y
diff --git a/config/common_linuxapp b/config/common_linuxapp
index aae22f4..c33a6fe 100644
--- a/config/common_linuxapp
+++ b/config/common_linuxapp
@@ -119,11 +119,6 @@ CONFIG_RTE_PCI_MAX_READ_REQUEST_SIZE=0
 CONFIG_RTE_LIBRTE_EAL_LINUXAPP=y
 
 #
-# Compile Environment Abstraction Layer to support hotplug
-#
-CONFIG_RTE_LIBRTE_EAL_HOTPLUG=y
-
-#
 # Compile Environment Abstraction Layer to support Vmware TSC map
 #
 CONFIG_RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT=y
diff --git a/lib/librte_eal/bsdapp/eal/eal_pci.c b/lib/librte_eal/bsdapp/eal/eal_pci.c
index 508cfa7..0724c45 100644
--- a/lib/librte_eal/bsdapp/eal/eal_pci.c
+++ b/lib/librte_eal/bsdapp/eal/eal_pci.c
@@ -309,8 +309,8 @@ skipdev:
  * Scan the content of the PCI bus, and add the devices in the devices
  * list. Call pci_scan_one() for each pci entry found.
  */
-static int
-pci_scan(void)
+int
+rte_eal_pci_scan(void)
 {
 	int fd;
 	unsigned dev_count = 0;
@@ -366,7 +366,7 @@ rte_eal_pci_init(void)
 	if (internal_config.no_pci)
 		return 0;
 
-	if (pci_scan() < 0) {
+	if (rte_eal_pci_scan() < 0) {
 		RTE_LOG(ERR, EAL, "%s(): Cannot scan PCI bus\n", __func__);
 		return -1;
 	}
diff --git a/lib/librte_eal/bsdapp/eal/rte_eal_version.map b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
index 67b6a6c..7e850a9 100644
--- a/lib/librte_eal/bsdapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
@@ -37,14 +37,20 @@ DPDK_2.0 {
 	rte_eal_lcore_role;
 	rte_eal_mp_remote_launch;
 	rte_eal_mp_wait_lcore;
+	rte_eal_parse_devargs_str;
+	rte_eal_pci_close_one;
 	rte_eal_pci_dump;
 	rte_eal_pci_probe;
+	rte_eal_pci_probe_one;
 	rte_eal_pci_register;
+	rte_eal_pci_scan;
 	rte_eal_pci_unregister;
 	rte_eal_process_type;
 	rte_eal_remote_launch;
 	rte_eal_tailq_lookup;
 	rte_eal_tailq_register;
+	rte_eal_vdev_init;
+	rte_eal_vdev_uninit;
 	rte_eal_wait_lcore;
 	rte_exit;
 	rte_get_hpet_cycles;
diff --git a/lib/librte_eal/common/eal_common_dev.c b/lib/librte_eal/common/eal_common_dev.c
index 92a5a94..4089d66 100644
--- a/lib/librte_eal/common/eal_common_dev.c
+++ b/lib/librte_eal/common/eal_common_dev.c
@@ -125,7 +125,6 @@ rte_eal_dev_init(void)
 	return 0;
 }
 
-#ifdef RTE_LIBRTE_EAL_HOTPLUG
 int
 rte_eal_vdev_uninit(const char *name)
 {
@@ -151,4 +150,3 @@ rte_eal_vdev_uninit(const char *name)
 	RTE_LOG(ERR, EAL, "no driver found for %s\n", name);
 	return -EINVAL;
 }
-#endif /* RTE_LIBRTE_EAL_HOTPLUG */
diff --git a/lib/librte_eal/common/eal_common_pci.c b/lib/librte_eal/common/eal_common_pci.c
index 8ef8057..3805aed 100644
--- a/lib/librte_eal/common/eal_common_pci.c
+++ b/lib/librte_eal/common/eal_common_pci.c
@@ -167,7 +167,6 @@ pci_map_device(struct rte_pci_device *dev)
 	return ret;
 }
 
-#ifdef RTE_LIBRTE_EAL_HOTPLUG
 /* Unmap pci device */
 static void
 pci_unmap_device(struct rte_pci_device *dev)
@@ -192,7 +191,6 @@ pci_unmap_device(struct rte_pci_device *dev)
 		break;
 	}
 }
-#endif /* RTE_LIBRTE_EAL_HOTPLUG */
 
 /*
  * If vendor/device ID match, call the devinit() function of the
@@ -265,7 +263,6 @@ rte_eal_pci_probe_one_driver(struct rte_pci_driver *dr, struct rte_pci_device *d
 	return 1;
 }
 
-#ifdef RTE_LIBRTE_EAL_HOTPLUG
 /*
  * If vendor/device ID match, call the devuninit() function of the
  * driver.
@@ -321,7 +318,6 @@ rte_eal_pci_close_one_driver(struct rte_pci_driver *dr,
 	/* return positive value if driver is not found */
 	return 1;
 }
-#endif /* RTE_LIBRTE_EAL_HOTPLUG */
 
 /*
  * If vendor/device ID match, call the devinit() function of all
@@ -350,7 +346,6 @@ pci_probe_all_drivers(struct rte_pci_device *dev)
 	return 1;
 }
 
-#ifdef RTE_LIBRTE_EAL_HOTPLUG
 /*
  * If vendor/device ID match, call the devuninit() function of all
  * registered driver for the given device. Return -1 if initialization
@@ -441,7 +436,6 @@ err_return:
 			dev->addr.devid, dev->addr.function);
 	return -1;
 }
-#endif /* RTE_LIBRTE_EAL_HOTPLUG */
 
 /*
  * Scan the content of the PCI bus, and call the devinit() function for
diff --git a/lib/librte_eal/common/eal_common_pci_uio.c b/lib/librte_eal/common/eal_common_pci_uio.c
index bf29484..bb38498 100644
--- a/lib/librte_eal/common/eal_common_pci_uio.c
+++ b/lib/librte_eal/common/eal_common_pci_uio.c
@@ -194,7 +194,6 @@ free_uio_res:
 	return -1;
 }
 
-#ifdef RTE_LIBRTE_EAL_HOTPLUG
 static void
 pci_uio_unmap(struct mapped_pci_resource *uio_res)
 {
@@ -267,4 +266,3 @@ pci_uio_unmap_resource(struct rte_pci_device *dev)
 	dev->intr_handle.fd = -1;
 	dev->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
 }
-#endif /* RTE_LIBRTE_EAL_HOTPLUG */
diff --git a/lib/librte_eal/common/eal_private.h b/lib/librte_eal/common/eal_private.h
index 216c098..6c9ac1a 100644
--- a/lib/librte_eal/common/eal_private.h
+++ b/lib/librte_eal/common/eal_private.h
@@ -174,14 +174,12 @@ int pci_unbind_kernel_driver(struct rte_pci_device *dev);
  */
 int pci_uio_map_resource(struct rte_pci_device *dev);
 
-#ifdef RTE_LIBRTE_EAL_HOTPLUG
 /**
  * Unmap this device
  *
  * This function is private to EAL.
  */
 void pci_uio_unmap_resource(struct rte_pci_device *dev);
-#endif /* RTE_LIBRTE_EAL_HOTPLUG */
 
 /**
  * Allocate uio resource for PCI device
diff --git a/lib/librte_eal/common/include/rte_pci.h b/lib/librte_eal/common/include/rte_pci.h
index 475d2dc..a8b6a10 100644
--- a/lib/librte_eal/common/include/rte_pci.h
+++ b/lib/librte_eal/common/include/rte_pci.h
@@ -376,7 +376,6 @@ void *pci_map_resource(void *requested_addr, int fd, off_t offset,
  */
 void pci_unmap_resource(void *requested_addr, size_t size);
 
-#ifdef RTE_LIBRTE_EAL_HOTPLUG
 /**
  * Probe the single PCI device.
  *
@@ -406,7 +405,6 @@ int rte_eal_pci_probe_one(const struct rte_pci_addr *addr);
  *   - Negative on error.
  */
 int rte_eal_pci_close_one(const struct rte_pci_addr *addr);
-#endif /* RTE_LIBRTE_EAL_HOTPLUG */
 
 /**
  * Dump the content of the PCI bus.
diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index 1822258..43b9fcc 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -425,9 +425,6 @@ rte_eth_dev_count(void)
 	return nb_ports;
 }
 
-/* So far, DPDK hotplug function only supports linux */
-#ifdef RTE_LIBRTE_EAL_HOTPLUG
-
 static enum rte_eth_dev_type
 rte_eth_dev_get_device_type(uint8_t port_id)
 {
@@ -708,24 +705,6 @@ rte_eth_dev_detach(uint8_t port_id, char *name)
 	} else
 		return rte_eth_dev_detach_vdev(port_id, name);
 }
-#else /* RTE_LIBRTE_EAL_HOTPLUG */
-int
-rte_eth_dev_attach(const char *devargs __rte_unused,
-			uint8_t *port_id __rte_unused)
-{
-	RTE_LOG(ERR, EAL, "Hotplug support isn't enabled\n");
-	return -1;
-}
-
-/* detach the device, then store the name of the device */
-int
-rte_eth_dev_detach(uint8_t port_id __rte_unused,
-			char *name __rte_unused)
-{
-	RTE_LOG(ERR, EAL, "Hotplug support isn't enabled\n");
-	return -1;
-}
-#endif /* RTE_LIBRTE_EAL_HOTPLUG */
 
 static int
 rte_eth_dev_rx_queue_config(struct rte_eth_dev *dev, uint16_t nb_queues)
-- 
2.1.4