dev_get_phys_port_name – Get device physical port name Synopsis int dev_get_phys_port_name(struct net_device *dev, char *name, size_t len); Arguments dev device name port name len limit of bytes to copy to name Description Get device physical port name Copyright
dev_get_phys_port_id – Get device physical port ID Synopsis int dev_get_phys_port_id(struct net_device *dev, struct netdev_phys_item_id *ppid); Arguments dev device ppid port ID Description Get device physical port ID Copyright
dev_get_iflink – get ‘iflink’ value of a interface Synopsis int dev_get_iflink(const struct net_device *dev); Arguments dev targeted interface Description Indicates the ifindex the interface is linked to. Physical interfaces have the same ‘ifindex’ and ‘iflink’ values. Copyright
dev_get_flags – get flags reported to userspace Synopsis unsigned int dev_get_flags(const struct net_device *dev); Arguments dev device Description Get the combination of flag bits exported through APIs to userspace. Copyright
dev_get_by_name_rcu – find a device by its name Synopsis struct net_device *dev_get_by_name_rcu(struct net *net, const char *name); Arguments net the applicable net namespace name name to find Description Find an interface by name. If the name is found a pointer to the device is returned. If the name is not found then NULL is returned….
dev_get_by_name – find a device by its name Synopsis struct net_device *dev_get_by_name(struct net *net, const char *name); Arguments net the applicable net namespace name name to find Description Find an interface by name. This can be called from any context and does its own locking. The returned handle has the usage count incremented and the…
dev_get_by_index_rcu – find a device by its ifindex Synopsis struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex); Arguments net the applicable net namespace ifindex index of device Description Search for an interface by index. Returns NULL if the device is not found or a pointer to the device. The device has not had its reference counter…
dev_get_by_index – find a device by its ifindex Synopsis struct net_device *dev_get_by_index(struct net *net, int ifindex); Arguments net the applicable net namespace ifindex index of device Description Search for an interface by index. Returns NULL if the device is not found or a pointer to the device. The device returned has had a reference added…
dev_forward_skb – loopback an skb to another netif Synopsis int dev_forward_skb(struct net_device *dev, struct sk_buff *skb); Arguments dev destination network device skb buffer to forward Description return values: NET_RX_SUCCESS (no congestion) NET_RX_DROP (packet was dropped, but freed) dev_forward_skb can be used for injecting an skb from the start_xmit function of one device into the receive…
dev_fill_metadata_dst – Retrieve tunnel egress information. Synopsis int dev_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb); Arguments dev targeted interface skb The packet. Description For better visibility of tunnel traffic OVS needs to retrieve egress tunnel information for a packet. Following API allows user to get this info. Copyright
dev_disable_lro – disable Large Receive Offload on a device Synopsis void dev_disable_lro(struct net_device *dev); Arguments dev device Description Disable Large Receive Offload (LRO) on a net device. Must be called under RTNL. This is needed if received packets may be forwarded to another interface. Copyright
dev_close – shutdown an interface. Synopsis int dev_close(struct net_device *dev); Arguments dev device to shutdown Description This function moves an active device into down state. A NETDEV_GOING_DOWN is sent to the netdev notifier chain. The device is then deactivated and finally a NETDEV_DOWN is sent to the notifier chain. Copyright
dev_change_xdp_fd – set or clear a bpf program for a device rx path Synopsis int dev_change_xdp_fd(struct net_device *dev, int fd); Arguments dev device fd new program fd or negative value to clear Description Set or clear a bpf program for a device Copyright
dev_change_proto_down – update protocol port state information Synopsis int dev_change_proto_down(struct net_device *dev, bool proto_down); Arguments dev device proto_down new value Description This info can be used by switch drivers to set the phys state of the port. Copyright
dev_change_net_namespace – move device to different nethost namespace Synopsis int dev_change_net_namespace(struct net_device *dev, struct net *net, const char *pat); Arguments dev device net network namespace pat If not NULL name pattern to try if the current device name is already taken in the destination network namespace. Description This function shuts down a device interface and…
dev_change_flags – change device settings Synopsis int dev_change_flags(struct net_device *dev, unsigned int flags); Arguments dev device flags device state flags Description Change settings on device based state flags. The flags are in the userspace exported format. Copyright
dev_change_carrier – Change device carrier Synopsis int dev_change_carrier(struct net_device *dev, bool new_carrier); Arguments dev device new_carrier new value Description Change device carrier Copyright
dev_alloc_name – allocate a name for a device Synopsis int dev_alloc_name(struct net_device *dev, const char *name); Arguments dev device name name format string Description Passed a format string – eg “ltd” it will try and find a suitable id. It scans list of devices to build up a free map, then chooses the first empty…
dev_add_pack – add packet handler Synopsis void dev_add_pack(struct packet_type *pt); Arguments pt packet type declaration Description Add a protocol handler to the networking stack. The passed packet_type is linked into kernel lists and may not be freed until it has been removed from the kernel lists. This call does not sleep therefore it can not…
dev_add_offload – register offload handlers Synopsis void dev_add_offload(struct packet_offload *po); Arguments po protocol offload declaration Description Add protocol offload handlers to the networking stack. The passed proto_offload is linked into kernel lists and may not be freed until it has been removed from the kernel lists. This call does not sleep therefore it can not…