SYNOPSIS

struct net_device {
char name[IFNAMSIZ];
struct hlist_node name_hlist;
char * ifalias;
unsigned long mem_end;
unsigned long mem_start;
unsigned long base_addr;
int irq;
atomic_t carrier_changes;
unsigned long state;
struct list_head dev_list;
struct list_head napi_list;
struct list_head unreg_list;
struct list_head close_list;
struct list_head ptype_all;
struct list_head ptype_specific;
struct {unnamed_struct};
struct garp_port __rcu * garp_port;
struct mrp_port __rcu * mrp_port;
struct device dev;
const struct attribute_group * sysfs_groups[4];
const struct attribute_group * sysfs_rx_queue_group;
const struct rtnl_link_ops * rtnl_link_ops;
#define GSO_MAX_SIZE 65536
unsigned int gso_max_size;
#define GSO_MAX_SEGS 65535
u16 gso_max_segs;
#ifdef CONFIG_DCB
const struct dcbnl_rtnl_ops * dcbnl_ops;
#endif
u8 num_tc;
struct netdev_tc_txq tc_to_txq[TC_MAX_QUEUE];
u8 prio_tc_map[TC_BITMASK + 1];
#if IS_ENABLED(CONFIG_FCOE)
unsigned int fcoe_ddp_xid;
#endif
#if IS_ENABLED(CONFIG_CGROUP_NET_PRIO)
struct netprio_map __rcu * priomap;
#endif
struct phy_device * phydev;
struct lock_class_key * qdisc_tx_busylock;
bool proto_down;
};

MEMBERS

name[IFNAMSIZ]

This is the first field of the "visible" part of this structure (i.e. as seen by users in the "Space.c" file). It is the name of the interface.

name_hlist

Device name hash chain, please keep it close to name[]

ifalias

SNMP alias

mem_end

Shared memory end

mem_start

Shared memory start

base_addr

Device I/O address

irq

Device IRQ number

carrier_changes

Stats to monitor carrier on<->off transitions

state

Generic network queuing layer state, see netdev_state_t

dev_list

The global list of network devices

napi_list

List entry used for polling NAPI devices

unreg_list

List entry when we are unregistering the device; see the function unregister_netdev

close_list

List entry used when we are closing the device

ptype_all

Device-specific packet handlers for all protocols

ptype_specific

Device-specific, protocol-specific packet handlers

{unnamed_struct}

anonymous

garp_port

GARP

mrp_port

MRP

dev

Class/net/name entry

sysfs_groups[4]

Space for optional device, statistics and wireless sysfs groups

sysfs_rx_queue_group

Space for optional per-rx queue attributes

rtnl_link_ops

Rtnl_link_ops

gso_max_size

Maximum size of generic segmentation offload

gso_max_segs

Maximum number of segments that can be passed to the NIC for GSO

dcbnl_ops

Data Center Bridging netlink ops

num_tc

Number of traffic classes in the net device

tc_to_txq[TC_MAX_QUEUE]

XXX: need comments on this one

prio_tc_map[TC_BITMASK + 1]

need comments on this one

fcoe_ddp_xid

Max exchange id for FCoE LRO by ddp

priomap

XXX: need comments on this one

phydev

Physical device may attach itself for hardware timestamping

qdisc_tx_busylock

XXX: need comments on this one

proto_down

protocol port state information can be sent to the switch driver and used to set the phys state of the switch port.

FIXME

cleanup struct net_device such that network protocol info moves out.

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