2021年11月09日 | Mini2440 DM9000 驱动分析

net_device_ops中方法的相应说明

/*

 * This structure defines the management hooks for network devices.

 * The following hooks can be defined; unless noted otherwise, they are

 * optional and can be filled with a null pointer.

 *

 * int (*ndo_init)(struct net_device *dev);

 *     This function is called once when network device is registered.

 *     The network device can use this to any late stage initializaton

 *     or semantic validattion. It can fail with an error code which will

 *     be propogated back to register_netdev

 *

 * void (*ndo_uninit)(struct net_device *dev);

 *     This function is called when device is unregistered or when registration

 *     fails. It is not called if init fails.

 *

 * int (*ndo_open)(struct net_device *dev);

 *     This function is called when network device transistions to the up

 *     state.

 *

 * int (*ndo_stop)(struct net_device *dev);

 *     This function is called when network device transistions to the down

 *     state.

 *

 * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb,

 *                               struct net_device *dev);

 * Called when a packet needs to be transmitted.

 * Must return NETDEV_TX_OK , NETDEV_TX_BUSY.

 *        (can also return NETDEV_TX_LOCKED iff NETIF_F_LLTX)

 * Required can not be NULL.

 *

 * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb);

 * Called to decide which queue to when device supports multiple

 * transmit queues.

 *

 * void (*ndo_change_rx_flags)(struct net_device *dev, int flags);

 * This function is called to allow device receiver to make

 * changes to configuration when multicast or promiscious is enabled.

 *

 * void (*ndo_set_rx_mode)(struct net_device *dev);

 * This function is called device changes address list filtering.

 *

 * void (*ndo_set_multicast_list)(struct net_device *dev);

 * This function is called when the multicast address list changes.

 *

 * int (*ndo_set_mac_address)(struct net_device *dev, void *addr);

 * This function  is called when the Media Access Control address

 * needs to be changed. If this interface is not defined, the

 * mac address can not be changed.

 *

 * int (*ndo_validate_addr)(struct net_device *dev);

 * Test if Media Access Control address is valid for the device.

 *

 * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd);

 * Called when a user request an ioctl which can't be handled by

 * the generic interface code. If not defined ioctl's return

 * not supported error code.

 *

 * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map);

 * Used to set network devices bus interface parameters. This interface

 * is retained for legacy reason, new devices should use the bus

 * interface (PCI) for low level management.

 *

 * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu);

 * Called when a user wants to change the Maximum Transfer Unit

 * of a device. If not defined, any request to change MTU will

 * will return an error.

 *

 * void (*ndo_tx_timeout)(struct net_device *dev);

 * Callback uses when the transmitter has not made any progress

 * for dev->watchdog ticks.

 *

 * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);

 * Called when a user wants to get the network device usage

 * statistics. If not defined, the counters in dev->stats will

 * be used.

 *

 * void (*ndo_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp);

 * If device support VLAN receive accleration

 * (ie. dev->features & NETIF_F_HW_VLAN_RX), then this function is called

 * when vlan groups for the device changes.  Note: grp is NULL

 * if no vlan's groups are being used.

 *

 * void (*ndo_vlan_rx_add_vid)(struct net_device *dev, unsigned short vid);

 * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER)

 * this function is called when a VLAN id is registered.

 *

 * void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, unsigned short vid);

 * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER)

 * this function is called when a VLAN id is unregistered.

 *

 * void (*ndo_poll_controller)(struct net_device *dev);

 */

#define HAVE_NET_DEVICE_OPS

struct net_device_ops {

int (*ndo_init)(struct net_device *dev);

void (*ndo_uninit)(struct net_device *dev);

int (*ndo_open)(struct net_device *dev);

int (*ndo_stop)(struct net_device *dev);

netdev_tx_t (*ndo_start_xmit) (struct sk_buff *skb,

   struct net_device *dev);

u16 (*ndo_select_queue)(struct net_device *dev,

    struct sk_buff *skb);

#define HAVE_CHANGE_RX_FLAGS

void (*ndo_change_rx_flags)(struct net_device *dev,

       int flags);

#define HAVE_SET_RX_MODE

void (*ndo_set_rx_mode)(struct net_device *dev);

#define HAVE_MULTICAST

void (*ndo_set_multicast_list)(struct net_device *dev);

#define HAVE_SET_MAC_ADDR

int (*ndo_set_mac_address)(struct net_device *dev,

       void *addr);

#define HAVE_VALIDATE_ADDR

int (*ndo_validate_addr)(struct net_device *dev);

#define HAVE_PRIVATE_IOCTL

int (*ndo_do_ioctl)(struct net_device *dev,

        struct ifreq *ifr, int cmd);

#define HAVE_SET_CONFIG

int (*ndo_set_config)(struct net_device *dev,

          struct ifmap *map);

#define HAVE_CHANGE_MTU

int (*ndo_change_mtu)(struct net_device *dev,

  int new_mtu);

int (*ndo_neigh_setup)(struct net_device *dev,

   struct neigh_parms *);

#define HAVE_TX_TIMEOUT

void (*ndo_tx_timeout) (struct net_device *dev);

struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);

void (*ndo_vlan_rx_register)(struct net_device *dev,

        struct vlan_group *grp);

void (*ndo_vlan_rx_add_vid)(struct net_device *dev,

       unsigned short vid);

void (*ndo_vlan_rx_kill_vid)(struct net_device *dev,

        unsigned short vid);

#ifdef CONFIG_NET_POLL_CONTROLLER

#define HAVE_NETDEV_POLL

void                    (*ndo_poll_controller)(struct net_device *dev);

#endif

#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)

int (*ndo_fcoe_enable)(struct net_device *dev);

int (*ndo_fcoe_disable)(struct net_device *dev);

int (*ndo_fcoe_ddp_setup)(struct net_device *dev,

      u16 xid,

      struct scatterlist *sgl,

      unsigned int sgc);

int (*ndo_fcoe_ddp_done)(struct net_device *dev,

     u16 xid);

#endif

};

ethtool_ops 中方法的相应说明

/**

 * ðtool_ops - Alter and report network device settings

 * get_settings: Get device-specific settings

 * set_settings: Set device-specific settings

 * get_drvinfo: Report driver information

 * get_regs: Get device registers

 * get_wol: Report whether Wake-on-Lan is enabled

 * set_wol: Turn Wake-on-Lan on or off

 * get_msglevel: Report driver message level

 * set_msglevel: Set driver message level

 * nway_reset: Restart autonegotiation

 * get_link: Get link status

 * get_eeprom: Read data from the device EEPROM

 * set_eeprom: Write data to the device EEPROM

 * get_coalesce: Get interrupt coalescing parameters

 * set_coalesce: Set interrupt coalescing parameters

 * get_ringparam: Report ring sizes

 * set_ringparam: Set ring sizes

 * get_pauseparam: Report pause parameters

 * set_pauseparam: Set pause parameters

 * get_rx_csum: Report whether receive checksums are turned on or off

 * set_rx_csum: Turn receive checksum on or off

 * get_tx_csum: Report whether transmit checksums are turned on or off

 * set_tx_csum: Turn transmit checksums on or off

 * get_sg: Report whether scatter-gather is enabled

 * set_sg: Turn scatter-gather on or off

 * get_tso: Report whether TCP segmentation offload is enabled

 * set_tso: Turn TCP segmentation offload on or off

 * get_ufo: Report whether UDP fragmentation offload is enabled

 * set_ufo: Turn UDP fragmentation offload on or off

 * self_test: Run specified self-tests

 * get_strings: Return a set of strings that describe the requested objects 

 * phys_id: Identify the device

 * get_stats: Return statistics about the device

 * get_flags: get 32-bit flags bitmap

 * set_flags: set 32-bit flags bitmap

 * 

 * Description:

 *

 * get_settings:

 * @get_settings is passed an ðtool_cmd to fill in.  It returns

 * an negative errno or zero.

 *

 * set_settings:

 * @set_settings is passed an ðtool_cmd and should attempt to set

 * all the settings this device supports.  It may return an error value

 * if something goes wrong (otherwise 0).

 *

 * get_eeprom:

 * Should fill in the magic field.  Don't need to check len for zero

 * or wraparound.  Fill in the data argument with the eeprom values

 * from offset to offset + len.  Update len to the amount read.

 * Returns an error or zero.

 *

 * set_eeprom:

 * Should validate the magic field.  Don't need to check len for zero

 * or wraparound.  Update len to the amount written.  Returns an error

 * or zero.

 */

struct ethtool_ops {

int (*get_settings)(struct net_device *, struct ethtool_cmd *);