> -----Original Message-----
> From: Tetsuya Mukawa [mailto:mukawa at igel.co.jp]
> Sent: Monday, February 23, 2015 5:09 AM
> To: dev at dpdk.org
> Cc: Qiu, Michael; Iremonger, Bernard; maxime.leroy at 6wind.com; Tetsuya
> Mukawa
> Subject: [PATCH v11 08/13] ethdev: Add functions that will be used by port
> hotplug functions
>
> The patch adds following functions.
>
> - rte_eth_dev_save()
> The function is used for saving current rte_eth_dev structures.
> - rte_eth_dev_get_changed_port()
> The function receives the rte_eth_dev structures, then compare
> these with current values to know which port is actually
> attached or detached.
> - rte_eth_dev_get_addr_by_port()
> The function returns a pci address of an ethdev specified by port
> identifier.
> - rte_eth_dev_get_port_by_addr()
> The function returns a port identifier of an ethdev specified by
> pci address.
> - rte_eth_dev_get_name_by_port()
> The function returns a unique identifier name of an ethdev
> specified by port identifier.
> - Add rte_eth_dev_is_detachable()
> The function returns whether a PMD supports detach function.
>
> Also, the patch changes scope of rte_eth_dev_allocated() to global.
> This function will be called by virtual PMDs to support port hotplug.
> So change scope of the function to global.
>
> v10:
> - Change order of version.map.
> (Thanks to Thomas Monjalon)
> v9:
> - rte_eth_dev_check_detachable() is replaced by
> rte_eth_dev_is_detachable().
> - strncpy() is replaced by strcpy().
> (Thanks to Thomas Monjalon)
> - Add missing symbol in version map.
> (Thanks to Nail Horman)
> v8:
> - Add size parameter to rte_eth_dev_save().
> - Add missing symbol in version map.
> (Thanks to Qiu, Michael and Iremonger, Bernard)
> v7:
> - Add pt_driver checking to rte_eth_dev_check_detachable().
> (Thanks to Qiu, Michael)
> v5:
> - Fix return value of below functions.
> rte_eth_dev_get_changed_port().
> rte_eth_dev_get_port_by_addr().
> v4:
> - Add parameter checking.
> v3:
> - Fix if-condition bug while comparing pci addresses.
> - Add error checking codes.
> Reported-by: Mark Enright <menrigh at brocade.com>
>
> Signed-off-by: Tetsuya Mukawa <mukawa at igel.co.jp>
> ---
> lib/librte_ether/rte_ethdev.c | 103
> ++++++++++++++++++++++++++++++++-
> lib/librte_ether/rte_ethdev.h | 83 ++++++++++++++++++++++++++
> lib/librte_ether/rte_ether_version.map | 7 +++
> 3 files changed, 192 insertions(+), 1 deletion(-)
>
> diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
> index 3d148e2..7067620
> 100644
> --- a/lib/librte_ether/rte_ethdev.c
> +++ b/lib/librte_ether/rte_ethdev.c
> @@ -201,7 +201,7 @@ rte_eth_dev_data_alloc(void)
> RTE_MAX_ETHPORTS * sizeof(*rte_eth_dev_data));
> }
>
> -static struct rte_eth_dev *
> +struct rte_eth_dev *
> rte_eth_dev_allocated(const char *name) {
> unsigned i;
> @@ -426,6 +426,107 @@ rte_eth_dev_count(void)
> return (nb_ports);
> }
>
> +int
> +rte_eth_dev_save(struct rte_eth_dev *devs, size_t size) {
> + if ((devs == NULL) ||
> + (size != sizeof(struct rte_eth_dev) * RTE_MAX_ETHPORTS))
> + return -EINVAL;
> +
> + /* save current rte_eth_devices */
> + memcpy(devs, rte_eth_devices, size);
> + return 0;
> +}
> +
> +int
> +rte_eth_dev_get_changed_port(struct rte_eth_dev *devs, uint8_t
> +*port_id) {
> + if ((devs == NULL) || (port_id == NULL))
> + return -EINVAL;
> +
> + /* check which port was attached or detached */
> + for (*port_id = 0; *port_id < RTE_MAX_ETHPORTS; (*port_id)++, devs++) {
> + if (rte_eth_devices[*port_id].attached ^ devs->attached)
> + return 0;
> + }
> + return -ENODEV;
> +}
> +
> +int
> +rte_eth_dev_get_addr_by_port(uint8_t port_id, struct rte_pci_addr
> +*addr) {
> + if (!rte_eth_dev_is_valid_port(port_id)) {
> + PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
> + return -EINVAL;
> + }
> +
> + if (addr == NULL) {
> + PMD_DEBUG_TRACE("Null pointer is specified\n");
> + return -EINVAL;
> + }
> +
> + *addr = rte_eth_devices[port_id].pci_dev->addr;
> + return 0;
> +}
> +
> +int
> +rte_eth_dev_get_port_by_addr(struct rte_pci_addr *addr, uint8_t
> +*port_id) {
> + struct rte_pci_addr *tmp;
> +
> + if ((addr == NULL) || (port_id == NULL)) {
> + PMD_DEBUG_TRACE("Null pointer is specified\n");
> + return -EINVAL;
> + }
> +
> + for (*port_id = 0; *port_id < RTE_MAX_ETHPORTS; (*port_id)++) {
> + if (!rte_eth_devices[*port_id].attached)
> + continue;
> + if (!rte_eth_devices[*port_id].pci_dev)
> + continue;
> + tmp = &rte_eth_devices[*port_id].pci_dev->addr;
> + if (rte_eal_compare_pci_addr(tmp, addr) == 0)
> + return 0;
> + }
> + return -ENODEV;
> +}
> +
> +int
> +rte_eth_dev_get_name_by_port(uint8_t port_id, char *name) {
> + char *tmp;
> +
> + if (!rte_eth_dev_is_valid_port(port_id)) {
> + PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
> + return -EINVAL;
> + }
> +
> + if (name == NULL) {
> + PMD_DEBUG_TRACE("Null pointer is specified\n");
> + return -EINVAL;
> + }
> +
> + /* shouldn't check 'rte_eth_devices[i].data',
> + * because it might be overwritten by VDEV PMD */
> + tmp = rte_eth_dev_data[port_id].name;
> + strcpy(name, tmp);
> + return 0;
> +}
> +
> +int
> +rte_eth_dev_is_detachable(uint8_t port_id) {
> + uint32_t drv_flags;
> +
> + if (port_id >= RTE_MAX_ETHPORTS) {
> + PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
> + return -EINVAL;
> + }
> +
> + drv_flags = rte_eth_devices[port_id].driver->pci_drv.drv_flags;
> + return !(drv_flags & RTE_PCI_DRV_DETACHABLE); }
> +
> static int
> rte_eth_dev_rx_queue_config(struct rte_eth_dev *dev, uint16_t nb_queues) {
> diff --git
> a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h index
> 6cba06d..d4cfafb 100644
> --- a/lib/librte_ether/rte_ethdev.h
> +++ b/lib/librte_ether/rte_ethdev.h
> @@ -1476,6 +1476,89 @@ extern struct rte_eth_dev rte_eth_devices[]; extern
> uint8_t
> rte_eth_dev_count(void);
>
> /**
> + * Function for internal use by port hotplug functions.
> + * Copies current ethdev structures to the specified pointer.
> + *
> + * @param devs The pointer to the ethdev structures
> + * @param size The size of ethdev structures
> + * @return
> + * - 0 on success, negative on error
> + */
> +extern int rte_eth_dev_save(struct rte_eth_dev *devs, size_t size);
> +
> +/**
> + * Function for internal use by port hotplug functions.
> + * Compare the specified ethdev structures with currents. Then
> + * if there is a port which status is changed, fill the specified
> +pointer
> + * with the port id of that port.
> + * @param devs The pointer to the ethdev structures
> + * @param port_id The pointer to the port id
> + * @return
> + * - 0 on success, negative on error
> + */
> +extern int rte_eth_dev_get_changed_port(
> + struct rte_eth_dev *devs, uint8_t *port_id);
> +
> +/**
> + * Function for internal use by port hotplug functions.
> + * Returns a pci address of a ethdev specified by port identifier.
> + * @param port_id
> + * The port identifier of the Ethernet device
> + * @param addr
> + * The pointer to the pci address
> + * @return
> + * - 0 on success, negative on error
> + */
> +extern int rte_eth_dev_get_addr_by_port(
> + uint8_t port_id, struct rte_pci_addr *addr);
> +
> +/**
> + * Function for internal use by port hotplug functions.
> + * Returns a port identifier of a ethdev specified by pci address.
> + * @param addr
> + * The pointer to the pci address of the Ethernet device.
> + * @param port_id
> + * The pointer to the port identifier
> + * @return
> + * - 0 on success, negative on error
> + */
> +extern int rte_eth_dev_get_port_by_addr(
> + struct rte_pci_addr *addr, uint8_t *port_id);
> +
> +/**
> + * Function for internal use by port hotplug functions.
> + * Returns a unique identifier name of a ethdev specified by port identifier.
> + * @param port_id
> + * The port identifier.
> + * @param name
> + * The pointer to the Unique identifier name for each Ethernet device
> + * @return
> + * - 0 on success, negative on error
> + */
> +extern int rte_eth_dev_get_name_by_port(uint8_t port_id, char *name);
> +
> +/**
> + * Function for internal use by port hotplug functions.
> + * Check whether or not, a PMD that is handling the ethdev specified by
> +port
> + * identifier can support detach function.
> + * @param port_id
> + * The port identifier
> + * @return
> + * - 0 on supporting detach function, negative on not supporting
> + */
> +extern int rte_eth_dev_is_detachable(uint8_t port_id);
> +
> +/**
> + * Function for internal use by port hotplug functions.
> + * Returns a ethdev slot specified by the unique identifier name.
> + * @param name
> + * The pointer to the Unique identifier name for each Ethernet device
> + * @return
> + * - The pointer to the ethdev slot, on success. NULL on error
> + */
> +extern struct rte_eth_dev *rte_eth_dev_allocated(const char *name);
> +
> +/**
> * Function for internal use by dummy drivers primarily, e.g. ring-based
> * driver.
> * Allocates a new ethdev slot for an ethernet device and returns the
> pointer diff --git
> a/lib/librte_ether/rte_ether_version.map
> b/lib/librte_ether/rte_ether_version.map
> index f66fd2d..099c769 100644
> --- a/lib/librte_ether/rte_ether_version.map
> +++ b/lib/librte_ether/rte_ether_version.map
> @@ -6,6 +6,7 @@ DPDK_2.0 {
> rte_eth_allmulticast_enable;
> rte_eth_allmulticast_get;
> rte_eth_dev_allocate;
> + rte_eth_dev_allocated;
> rte_eth_dev_bypass_event_show;
> rte_eth_dev_bypass_event_store;
> rte_eth_dev_bypass_init;
> @@ -32,9 +33,14 @@ DPDK_2.0 {
> rte_eth_dev_filter_supported;
> rte_eth_dev_flow_ctrl_get;
> rte_eth_dev_flow_ctrl_set;
> + rte_eth_dev_get_addr_by_port;
> + rte_eth_dev_get_changed_port;
Hi Tetsuya,
rte_eth_dev_get_device_type;
needs to be added to rte_ether_version map to solve linking issue.
Regards,
Bernard.
> rte_eth_dev_get_mtu;
> + rte_eth_dev_get_name_by_port;
> + rte_eth_dev_get_port_by_addr;
> rte_eth_dev_get_vlan_offload;
> rte_eth_dev_info_get;
> + rte_eth_dev_is_detachable;
> rte_eth_dev_mac_addr_add;
> rte_eth_dev_mac_addr_remove;
> rte_eth_dev_priority_flow_ctrl_set;
> @@ -44,6 +50,7 @@ DPDK_2.0 {
> rte_eth_dev_rss_reta_update;
> rte_eth_dev_rx_queue_start;
> rte_eth_dev_rx_queue_stop;
> + rte_eth_dev_save;
> rte_eth_dev_set_link_down;
> rte_eth_dev_set_link_up;
> rte_eth_dev_set_mtu;
> --
> 1.9.1
