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

["Iremonger, Bernard" <bernard.iremonger@intel.com>]

> -----Original Message-----
> From: Tetsuya Mukawa [mailto:mukawa@igel.co.jp]
> Sent: Tuesday, June 30, 2015 9:27 AM
> To: dev@dpdk.org
> Cc: Iremonger, Bernard; david.marchand@6wind.com; Richardson, Bruce;
> Tetsuya.Mukawa
> Subject: [PATCH v4] eal: Enable Port Hotplug as default in Linux and BSD
> 
> 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>

Hi Tetsuya,

Would it be cleaner to add this patch to the  [PATCH  v7 12/12] patch set as  patch 13 rather than having it as a separate patch?

Regards,

Bernard.
 
> ---
>  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