diff options
Diffstat (limited to 'include/linux/netdevice.h')
| -rw-r--r-- | include/linux/netdevice.h | 166 |
1 files changed, 161 insertions, 5 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 60584b185a0..3de49aca451 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -324,12 +324,15 @@ struct napi_struct { struct sk_buff *gro_list; struct sk_buff *skb; struct list_head dev_list; + struct hlist_node napi_hash_node; + unsigned int napi_id; }; enum { NAPI_STATE_SCHED, /* Poll is scheduled */ NAPI_STATE_DISABLE, /* Disable pending */ NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */ + NAPI_STATE_HASHED, /* In NAPI hash */ }; enum gro_result { @@ -446,6 +449,32 @@ extern void __napi_complete(struct napi_struct *n); extern void napi_complete(struct napi_struct *n); /** + * napi_by_id - lookup a NAPI by napi_id + * @napi_id: hashed napi_id + * + * lookup @napi_id in napi_hash table + * must be called under rcu_read_lock() + */ +extern struct napi_struct *napi_by_id(unsigned int napi_id); + +/** + * napi_hash_add - add a NAPI to global hashtable + * @napi: napi context + * + * generate a new napi_id and store a @napi under it in napi_hash + */ +extern void napi_hash_add(struct napi_struct *napi); + +/** + * napi_hash_del - remove a NAPI from global table + * @napi: napi context + * + * Warning: caller must observe rcu grace period + * before freeing memory containing @napi + */ +extern void napi_hash_del(struct napi_struct *napi); + +/** * napi_disable - prevent NAPI from scheduling * @n: napi context * @@ -699,6 +728,16 @@ struct netdev_fcoe_hbainfo { }; #endif +#define MAX_PHYS_PORT_ID_LEN 32 + +/* This structure holds a unique identifier to identify the + * physical port used by a netdevice. + */ +struct netdev_phys_port_id { + unsigned char id[MAX_PHYS_PORT_ID_LEN]; + unsigned char id_len; +}; + /* * This structure defines the management hooks for network devices. * The following hooks can be defined; unless noted otherwise, they are @@ -800,6 +839,7 @@ struct netdev_fcoe_hbainfo { * int (*ndo_set_vf_spoofchk)(struct net_device *dev, int vf, bool setting); * int (*ndo_get_vf_config)(struct net_device *dev, * int vf, struct ifla_vf_info *ivf); + * int (*ndo_set_vf_link_state)(struct net_device *dev, int vf, int link_state); * int (*ndo_set_vf_port)(struct net_device *dev, int vf, * struct nlattr *port[]); * int (*ndo_get_vf_port)(struct net_device *dev, int vf, struct sk_buff *skb); @@ -902,6 +942,25 @@ struct netdev_fcoe_hbainfo { * that determine carrier state from physical hardware properties (eg * network cables) or protocol-dependent mechanisms (eg * USB_CDC_NOTIFY_NETWORK_CONNECTION) should NOT implement this function. + * + * int (*ndo_get_phys_port_id)(struct net_device *dev, + * struct netdev_phys_port_id *ppid); + * Called to get ID of physical port of this device. If driver does + * not implement this, it is assumed that the hw is not able to have + * multiple net devices on single physical port. + * + * void (*ndo_add_vxlan_port)(struct net_device *dev, + * sa_family_t sa_family, __be16 port); + * Called by vxlan to notiy a driver about the UDP port and socket + * address family that vxlan is listnening to. It is called only when + * a new port starts listening. The operation is protected by the + * vxlan_net->sock_lock. + * + * void (*ndo_del_vxlan_port)(struct net_device *dev, + * sa_family_t sa_family, __be16 port); + * Called by vxlan to notify the driver about a UDP port and socket + * address family that vxlan is not listening to anymore. The operation + * is protected by the vxlan_net->sock_lock. */ struct net_device_ops { int (*ndo_init)(struct net_device *dev); @@ -943,6 +1002,9 @@ struct net_device_ops { gfp_t gfp); void (*ndo_netpoll_cleanup)(struct net_device *dev); #endif +#ifdef CONFIG_NET_RX_BUSY_POLL + int (*ndo_busy_poll)(struct napi_struct *dev); +#endif int (*ndo_set_vf_mac)(struct net_device *dev, int queue, u8 *mac); int (*ndo_set_vf_vlan)(struct net_device *dev, @@ -954,6 +1016,8 @@ struct net_device_ops { int (*ndo_get_vf_config)(struct net_device *dev, int vf, struct ifla_vf_info *ivf); + int (*ndo_set_vf_link_state)(struct net_device *dev, + int vf, int link_state); int (*ndo_set_vf_port)(struct net_device *dev, int vf, struct nlattr *port[]); @@ -1025,6 +1089,14 @@ struct net_device_ops { struct nlmsghdr *nlh); int (*ndo_change_carrier)(struct net_device *dev, bool new_carrier); + int (*ndo_get_phys_port_id)(struct net_device *dev, + struct netdev_phys_port_id *ppid); + void (*ndo_add_vxlan_port)(struct net_device *dev, + sa_family_t sa_family, + __be16 port); + void (*ndo_del_vxlan_port)(struct net_device *dev, + sa_family_t sa_family, + __be16 port); }; /* @@ -1072,6 +1144,7 @@ struct net_device { struct list_head napi_list; struct list_head unreg_list; struct list_head upper_dev_list; /* List of upper devices */ + struct list_head lower_dev_list; /* currently active device features */ @@ -1088,6 +1161,8 @@ struct net_device { * need to set them appropriately. */ netdev_features_t hw_enc_features; + /* mask of fetures inheritable by MPLS */ + netdev_features_t mpls_features; /* Interface index. Unique device identifier */ int ifindex; @@ -1140,8 +1215,10 @@ struct net_device { unsigned char addr_assign_type; /* hw address assignment type */ unsigned char addr_len; /* hardware address length */ unsigned char neigh_priv_len; - unsigned short dev_id; /* for shared network cards */ - + unsigned short dev_id; /* Used to differentiate devices + * that share the same link + * layer address + */ spinlock_t addr_list_lock; struct netdev_hw_addr_list uc; /* Unicast mac addresses */ struct netdev_hw_addr_list mc; /* Multicast mac addresses */ @@ -1593,17 +1670,40 @@ struct packet_offload { #define NETDEV_RELEASE 0x0012 #define NETDEV_NOTIFY_PEERS 0x0013 #define NETDEV_JOIN 0x0014 +#define NETDEV_CHANGEUPPER 0x0015 +#define NETDEV_RESEND_IGMP 0x0016 extern int register_netdevice_notifier(struct notifier_block *nb); extern int unregister_netdevice_notifier(struct notifier_block *nb); -extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev); +struct netdev_notifier_info { + struct net_device *dev; +}; -extern rwlock_t dev_base_lock; /* Device list lock */ +struct netdev_notifier_change_info { + struct netdev_notifier_info info; /* must be first */ + unsigned int flags_changed; +}; -extern seqcount_t devnet_rename_seq; /* Device rename seq */ +static inline void netdev_notifier_info_init(struct netdev_notifier_info *info, + struct net_device *dev) +{ + info->dev = dev; +} + +static inline struct net_device * +netdev_notifier_info_to_dev(const struct netdev_notifier_info *info) +{ + return info->dev; +} + +extern int call_netdevice_notifiers_info(unsigned long val, struct net_device *dev, + struct netdev_notifier_info *info); +extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev); +extern rwlock_t dev_base_lock; /* Device list lock */ + #define for_each_netdev(net, d) \ list_for_each_entry(d, &(net)->dev_base_head, dev_list) #define for_each_netdev_reverse(net, d) \ @@ -1695,6 +1795,7 @@ extern int init_dummy_netdev(struct net_device *dev); extern struct net_device *dev_get_by_index(struct net *net, int ifindex); extern struct net_device *__dev_get_by_index(struct net *net, int ifindex); extern struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex); +extern int netdev_get_name(struct net *net, char *name, int ifindex); extern int dev_restart(struct net_device *dev); #ifdef CONFIG_NETPOLL_TRAP extern int netpoll_trap(void); @@ -1778,6 +1879,19 @@ static inline int unregister_gifconf(unsigned int family) return register_gifconf(family, NULL); } +#ifdef CONFIG_NET_FLOW_LIMIT +#define FLOW_LIMIT_HISTORY (1 << 7) /* must be ^2 and !overflow buckets */ +struct sd_flow_limit { + u64 count; + unsigned int num_buckets; + unsigned int history_head; + u16 history[FLOW_LIMIT_HISTORY]; + u8 buckets[]; +}; + +extern int netdev_flow_limit_table_len; +#endif /* CONFIG_NET_FLOW_LIMIT */ + /* * Incoming packets are placed on per-cpu queues */ @@ -1807,6 +1921,10 @@ struct softnet_data { unsigned int dropped; struct sk_buff_head input_pkt_queue; struct napi_struct backlog; + +#ifdef CONFIG_NET_FLOW_LIMIT + struct sd_flow_limit __rcu *flow_limit; +#endif }; static inline void input_queue_head_incr(struct softnet_data *sd) @@ -1983,6 +2101,15 @@ static inline void netdev_tx_sent_queue(struct netdev_queue *dev_queue, #endif } +/** + * netdev_sent_queue - report the number of bytes queued to hardware + * @dev: network device + * @bytes: number of bytes queued to the hardware device queue + * + * Report the number of bytes queued for sending/completion to the network + * device hardware queue. @bytes should be a good approximation and should + * exactly match netdev_completed_queue() @bytes + */ static inline void netdev_sent_queue(struct net_device *dev, unsigned int bytes) { netdev_tx_sent_queue(netdev_get_tx_queue(dev, 0), bytes); @@ -2012,6 +2139,16 @@ static inline void netdev_tx_completed_queue(struct netdev_queue *dev_queue, #endif } +/** + * netdev_completed_queue - report bytes and packets completed by device + * @dev: network device + * @pkts: actual number of packets sent over the medium + * @bytes: actual number of bytes sent over the medium + * + * Report the number of bytes and packets transmitted by the network device + * hardware queue over the physical medium, @bytes must exactly match the + * @bytes amount passed to netdev_sent_queue() + */ static inline void netdev_completed_queue(struct net_device *dev, unsigned int pkts, unsigned int bytes) { @@ -2026,6 +2163,13 @@ static inline void netdev_tx_reset_queue(struct netdev_queue *q) #endif } +/** + * netdev_reset_queue - reset the packets and bytes count of a network device + * @dev_queue: network device + * + * Reset the bytes and packet count of a network device and clear the + * software flow control OFF bit for this network device + */ static inline void netdev_reset_queue(struct net_device *dev_queue) { netdev_tx_reset_queue(netdev_get_tx_queue(dev_queue, 0)); @@ -2235,6 +2379,8 @@ extern int dev_set_mac_address(struct net_device *, struct sockaddr *); extern int dev_change_carrier(struct net_device *, bool new_carrier); +extern int dev_get_phys_port_id(struct net_device *dev, + struct netdev_phys_port_id *ppid); extern int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev, struct netdev_queue *txq); @@ -2667,6 +2813,16 @@ extern int bpf_jit_enable; extern bool netdev_has_upper_dev(struct net_device *dev, struct net_device *upper_dev); extern bool netdev_has_any_upper_dev(struct net_device *dev); +extern struct net_device *netdev_upper_get_next_dev_rcu(struct net_device *dev, + struct list_head **iter); + +/* iterate through upper list, must be called under RCU read lock */ +#define netdev_for_each_upper_dev_rcu(dev, upper, iter) \ + for (iter = &(dev)->upper_dev_list, \ + upper = netdev_upper_get_next_dev_rcu(dev, &(iter)); \ + upper; \ + upper = netdev_upper_get_next_dev_rcu(dev, &(iter))) + extern struct net_device *netdev_master_upper_dev_get(struct net_device *dev); extern struct net_device *netdev_master_upper_dev_get_rcu(struct net_device *dev); extern int netdev_upper_dev_link(struct net_device *dev, |