mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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6e3f7faf3e
Add __rcu annotations to : (struct netdev_rx_queue)->rps_map (struct netdev_rx_queue)->rps_flow_table struct rps_sock_flow_table *rps_sock_flow_table; And use appropriate rcu primitives. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2435 lines
73 KiB
C
2435 lines
73 KiB
C
/*
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* INET An implementation of the TCP/IP protocol suite for the LINUX
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* operating system. INET is implemented using the BSD Socket
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* interface as the means of communication with the user level.
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*
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* Definitions for the Interfaces handler.
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*
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* Version: @(#)dev.h 1.0.10 08/12/93
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*
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* Authors: Ross Biro
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* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
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* Corey Minyard <wf-rch!minyard@relay.EU.net>
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* Donald J. Becker, <becker@cesdis.gsfc.nasa.gov>
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* Alan Cox, <alan@lxorguk.ukuu.org.uk>
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* Bjorn Ekwall. <bj0rn@blox.se>
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* Pekka Riikonen <priikone@poseidon.pspt.fi>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Moved to /usr/include/linux for NET3
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*/
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#ifndef _LINUX_NETDEVICE_H
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#define _LINUX_NETDEVICE_H
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#include <linux/if.h>
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#include <linux/if_ether.h>
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#include <linux/if_packet.h>
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#include <linux/if_link.h>
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#ifdef __KERNEL__
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#include <linux/pm_qos_params.h>
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#include <linux/timer.h>
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#include <linux/delay.h>
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#include <linux/mm.h>
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#include <asm/atomic.h>
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#include <asm/cache.h>
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#include <asm/byteorder.h>
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#include <linux/device.h>
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#include <linux/percpu.h>
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#include <linux/rculist.h>
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#include <linux/dmaengine.h>
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#include <linux/workqueue.h>
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#include <linux/ethtool.h>
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#include <net/net_namespace.h>
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#include <net/dsa.h>
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#ifdef CONFIG_DCB
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#include <net/dcbnl.h>
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#endif
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struct vlan_group;
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struct netpoll_info;
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struct phy_device;
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/* 802.11 specific */
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struct wireless_dev;
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/* source back-compat hooks */
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#define SET_ETHTOOL_OPS(netdev,ops) \
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( (netdev)->ethtool_ops = (ops) )
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#define HAVE_ALLOC_NETDEV /* feature macro: alloc_xxxdev
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functions are available. */
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#define HAVE_FREE_NETDEV /* free_netdev() */
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#define HAVE_NETDEV_PRIV /* netdev_priv() */
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/* hardware address assignment types */
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#define NET_ADDR_PERM 0 /* address is permanent (default) */
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#define NET_ADDR_RANDOM 1 /* address is generated randomly */
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#define NET_ADDR_STOLEN 2 /* address is stolen from other device */
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/* Backlog congestion levels */
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#define NET_RX_SUCCESS 0 /* keep 'em coming, baby */
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#define NET_RX_DROP 1 /* packet dropped */
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/*
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* Transmit return codes: transmit return codes originate from three different
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* namespaces:
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*
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* - qdisc return codes
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* - driver transmit return codes
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* - errno values
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*
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* Drivers are allowed to return any one of those in their hard_start_xmit()
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* function. Real network devices commonly used with qdiscs should only return
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* the driver transmit return codes though - when qdiscs are used, the actual
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* transmission happens asynchronously, so the value is not propagated to
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* higher layers. Virtual network devices transmit synchronously, in this case
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* the driver transmit return codes are consumed by dev_queue_xmit(), all
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* others are propagated to higher layers.
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*/
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/* qdisc ->enqueue() return codes. */
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#define NET_XMIT_SUCCESS 0x00
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#define NET_XMIT_DROP 0x01 /* skb dropped */
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#define NET_XMIT_CN 0x02 /* congestion notification */
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#define NET_XMIT_POLICED 0x03 /* skb is shot by police */
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#define NET_XMIT_MASK 0x0f /* qdisc flags in net/sch_generic.h */
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/* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It
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* indicates that the device will soon be dropping packets, or already drops
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* some packets of the same priority; prompting us to send less aggressively. */
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#define net_xmit_eval(e) ((e) == NET_XMIT_CN ? 0 : (e))
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#define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0)
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/* Driver transmit return codes */
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#define NETDEV_TX_MASK 0xf0
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enum netdev_tx {
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__NETDEV_TX_MIN = INT_MIN, /* make sure enum is signed */
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NETDEV_TX_OK = 0x00, /* driver took care of packet */
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NETDEV_TX_BUSY = 0x10, /* driver tx path was busy*/
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NETDEV_TX_LOCKED = 0x20, /* driver tx lock was already taken */
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};
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typedef enum netdev_tx netdev_tx_t;
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/*
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* Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant;
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* hard_start_xmit() return < NET_XMIT_MASK means skb was consumed.
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*/
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static inline bool dev_xmit_complete(int rc)
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{
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/*
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* Positive cases with an skb consumed by a driver:
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* - successful transmission (rc == NETDEV_TX_OK)
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* - error while transmitting (rc < 0)
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* - error while queueing to a different device (rc & NET_XMIT_MASK)
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*/
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if (likely(rc < NET_XMIT_MASK))
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return true;
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return false;
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}
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#endif
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#define MAX_ADDR_LEN 32 /* Largest hardware address length */
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#ifdef __KERNEL__
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/*
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* Compute the worst case header length according to the protocols
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* used.
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*/
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#if defined(CONFIG_WLAN) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
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# if defined(CONFIG_MAC80211_MESH)
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# define LL_MAX_HEADER 128
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# else
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# define LL_MAX_HEADER 96
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# endif
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#elif defined(CONFIG_TR) || defined(CONFIG_TR_MODULE)
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# define LL_MAX_HEADER 48
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#else
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# define LL_MAX_HEADER 32
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#endif
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#if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \
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!defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \
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!defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \
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!defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE)
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#define MAX_HEADER LL_MAX_HEADER
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#else
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#define MAX_HEADER (LL_MAX_HEADER + 48)
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#endif
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/*
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* Old network device statistics. Fields are native words
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* (unsigned long) so they can be read and written atomically.
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*/
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struct net_device_stats {
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unsigned long rx_packets;
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unsigned long tx_packets;
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unsigned long rx_bytes;
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unsigned long tx_bytes;
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unsigned long rx_errors;
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unsigned long tx_errors;
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unsigned long rx_dropped;
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unsigned long tx_dropped;
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unsigned long multicast;
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unsigned long collisions;
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unsigned long rx_length_errors;
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unsigned long rx_over_errors;
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unsigned long rx_crc_errors;
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unsigned long rx_frame_errors;
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unsigned long rx_fifo_errors;
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unsigned long rx_missed_errors;
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unsigned long tx_aborted_errors;
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unsigned long tx_carrier_errors;
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unsigned long tx_fifo_errors;
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unsigned long tx_heartbeat_errors;
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unsigned long tx_window_errors;
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unsigned long rx_compressed;
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unsigned long tx_compressed;
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};
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#endif /* __KERNEL__ */
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/* Media selection options. */
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enum {
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IF_PORT_UNKNOWN = 0,
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IF_PORT_10BASE2,
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IF_PORT_10BASET,
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IF_PORT_AUI,
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IF_PORT_100BASET,
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IF_PORT_100BASETX,
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IF_PORT_100BASEFX
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};
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#ifdef __KERNEL__
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#include <linux/cache.h>
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#include <linux/skbuff.h>
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struct neighbour;
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struct neigh_parms;
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struct sk_buff;
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struct netdev_hw_addr {
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struct list_head list;
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unsigned char addr[MAX_ADDR_LEN];
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unsigned char type;
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#define NETDEV_HW_ADDR_T_LAN 1
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#define NETDEV_HW_ADDR_T_SAN 2
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#define NETDEV_HW_ADDR_T_SLAVE 3
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#define NETDEV_HW_ADDR_T_UNICAST 4
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#define NETDEV_HW_ADDR_T_MULTICAST 5
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bool synced;
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bool global_use;
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int refcount;
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struct rcu_head rcu_head;
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};
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struct netdev_hw_addr_list {
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struct list_head list;
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int count;
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};
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#define netdev_hw_addr_list_count(l) ((l)->count)
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#define netdev_hw_addr_list_empty(l) (netdev_hw_addr_list_count(l) == 0)
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#define netdev_hw_addr_list_for_each(ha, l) \
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list_for_each_entry(ha, &(l)->list, list)
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#define netdev_uc_count(dev) netdev_hw_addr_list_count(&(dev)->uc)
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#define netdev_uc_empty(dev) netdev_hw_addr_list_empty(&(dev)->uc)
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#define netdev_for_each_uc_addr(ha, dev) \
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netdev_hw_addr_list_for_each(ha, &(dev)->uc)
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#define netdev_mc_count(dev) netdev_hw_addr_list_count(&(dev)->mc)
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#define netdev_mc_empty(dev) netdev_hw_addr_list_empty(&(dev)->mc)
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#define netdev_for_each_mc_addr(ha, dev) \
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netdev_hw_addr_list_for_each(ha, &(dev)->mc)
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struct hh_cache {
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struct hh_cache *hh_next; /* Next entry */
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atomic_t hh_refcnt; /* number of users */
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/*
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* We want hh_output, hh_len, hh_lock and hh_data be a in a separate
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* cache line on SMP.
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* They are mostly read, but hh_refcnt may be changed quite frequently,
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* incurring cache line ping pongs.
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*/
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__be16 hh_type ____cacheline_aligned_in_smp;
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/* protocol identifier, f.e ETH_P_IP
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* NOTE: For VLANs, this will be the
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* encapuslated type. --BLG
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*/
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u16 hh_len; /* length of header */
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int (*hh_output)(struct sk_buff *skb);
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seqlock_t hh_lock;
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/* cached hardware header; allow for machine alignment needs. */
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#define HH_DATA_MOD 16
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#define HH_DATA_OFF(__len) \
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(HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1))
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#define HH_DATA_ALIGN(__len) \
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(((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1))
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unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)];
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};
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static inline void hh_cache_put(struct hh_cache *hh)
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{
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if (atomic_dec_and_test(&hh->hh_refcnt))
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kfree(hh);
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}
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/* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much.
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* Alternative is:
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* dev->hard_header_len ? (dev->hard_header_len +
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* (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0
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*
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* We could use other alignment values, but we must maintain the
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* relationship HH alignment <= LL alignment.
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*
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* LL_ALLOCATED_SPACE also takes into account the tailroom the device
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* may need.
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*/
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#define LL_RESERVED_SPACE(dev) \
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((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
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#define LL_RESERVED_SPACE_EXTRA(dev,extra) \
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((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
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#define LL_ALLOCATED_SPACE(dev) \
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((((dev)->hard_header_len+(dev)->needed_headroom+(dev)->needed_tailroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
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struct header_ops {
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int (*create) (struct sk_buff *skb, struct net_device *dev,
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unsigned short type, const void *daddr,
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const void *saddr, unsigned len);
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int (*parse)(const struct sk_buff *skb, unsigned char *haddr);
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int (*rebuild)(struct sk_buff *skb);
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#define HAVE_HEADER_CACHE
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int (*cache)(const struct neighbour *neigh, struct hh_cache *hh);
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void (*cache_update)(struct hh_cache *hh,
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const struct net_device *dev,
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const unsigned char *haddr);
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};
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/* These flag bits are private to the generic network queueing
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* layer, they may not be explicitly referenced by any other
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* code.
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*/
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enum netdev_state_t {
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__LINK_STATE_START,
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__LINK_STATE_PRESENT,
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__LINK_STATE_NOCARRIER,
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__LINK_STATE_LINKWATCH_PENDING,
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__LINK_STATE_DORMANT,
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};
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/*
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* This structure holds at boot time configured netdevice settings. They
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* are then used in the device probing.
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*/
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struct netdev_boot_setup {
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char name[IFNAMSIZ];
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struct ifmap map;
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};
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#define NETDEV_BOOT_SETUP_MAX 8
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extern int __init netdev_boot_setup(char *str);
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/*
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* Structure for NAPI scheduling similar to tasklet but with weighting
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*/
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struct napi_struct {
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/* The poll_list must only be managed by the entity which
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* changes the state of the NAPI_STATE_SCHED bit. This means
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* whoever atomically sets that bit can add this napi_struct
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* to the per-cpu poll_list, and whoever clears that bit
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* can remove from the list right before clearing the bit.
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*/
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struct list_head poll_list;
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unsigned long state;
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int weight;
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int (*poll)(struct napi_struct *, int);
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#ifdef CONFIG_NETPOLL
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spinlock_t poll_lock;
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int poll_owner;
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#endif
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unsigned int gro_count;
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struct net_device *dev;
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struct list_head dev_list;
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struct sk_buff *gro_list;
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struct sk_buff *skb;
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};
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enum {
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NAPI_STATE_SCHED, /* Poll is scheduled */
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NAPI_STATE_DISABLE, /* Disable pending */
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NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */
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};
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enum gro_result {
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GRO_MERGED,
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GRO_MERGED_FREE,
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GRO_HELD,
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GRO_NORMAL,
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GRO_DROP,
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};
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typedef enum gro_result gro_result_t;
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typedef struct sk_buff *rx_handler_func_t(struct sk_buff *skb);
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extern void __napi_schedule(struct napi_struct *n);
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static inline int napi_disable_pending(struct napi_struct *n)
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{
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return test_bit(NAPI_STATE_DISABLE, &n->state);
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}
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/**
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* napi_schedule_prep - check if napi can be scheduled
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* @n: napi context
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*
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* Test if NAPI routine is already running, and if not mark
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* it as running. This is used as a condition variable
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* insure only one NAPI poll instance runs. We also make
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* sure there is no pending NAPI disable.
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*/
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static inline int napi_schedule_prep(struct napi_struct *n)
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{
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return !napi_disable_pending(n) &&
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!test_and_set_bit(NAPI_STATE_SCHED, &n->state);
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}
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/**
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* napi_schedule - schedule NAPI poll
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* @n: napi context
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*
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* Schedule NAPI poll routine to be called if it is not already
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* running.
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*/
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static inline void napi_schedule(struct napi_struct *n)
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{
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if (napi_schedule_prep(n))
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__napi_schedule(n);
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}
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/* Try to reschedule poll. Called by dev->poll() after napi_complete(). */
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static inline int napi_reschedule(struct napi_struct *napi)
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{
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if (napi_schedule_prep(napi)) {
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__napi_schedule(napi);
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return 1;
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}
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return 0;
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}
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|
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/**
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* napi_complete - NAPI processing complete
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* @n: napi context
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*
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* Mark NAPI processing as complete.
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*/
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extern void __napi_complete(struct napi_struct *n);
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extern void napi_complete(struct napi_struct *n);
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/**
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* napi_disable - prevent NAPI from scheduling
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* @n: napi context
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*
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* Stop NAPI from being scheduled on this context.
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* Waits till any outstanding processing completes.
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*/
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static inline void napi_disable(struct napi_struct *n)
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{
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set_bit(NAPI_STATE_DISABLE, &n->state);
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while (test_and_set_bit(NAPI_STATE_SCHED, &n->state))
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msleep(1);
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clear_bit(NAPI_STATE_DISABLE, &n->state);
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}
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|
|
/**
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* napi_enable - enable NAPI scheduling
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* @n: napi context
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*
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* Resume NAPI from being scheduled on this context.
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* Must be paired with napi_disable.
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*/
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static inline void napi_enable(struct napi_struct *n)
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{
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BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state));
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smp_mb__before_clear_bit();
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clear_bit(NAPI_STATE_SCHED, &n->state);
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}
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|
|
#ifdef CONFIG_SMP
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/**
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* napi_synchronize - wait until NAPI is not running
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* @n: napi context
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*
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* Wait until NAPI is done being scheduled on this context.
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|
* Waits till any outstanding processing completes but
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|
* does not disable future activations.
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|
*/
|
|
static inline void napi_synchronize(const struct napi_struct *n)
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{
|
|
while (test_bit(NAPI_STATE_SCHED, &n->state))
|
|
msleep(1);
|
|
}
|
|
#else
|
|
# define napi_synchronize(n) barrier()
|
|
#endif
|
|
|
|
enum netdev_queue_state_t {
|
|
__QUEUE_STATE_XOFF,
|
|
__QUEUE_STATE_FROZEN,
|
|
};
|
|
|
|
struct netdev_queue {
|
|
/*
|
|
* read mostly part
|
|
*/
|
|
struct net_device *dev;
|
|
struct Qdisc *qdisc;
|
|
unsigned long state;
|
|
struct Qdisc *qdisc_sleeping;
|
|
/*
|
|
* write mostly part
|
|
*/
|
|
spinlock_t _xmit_lock ____cacheline_aligned_in_smp;
|
|
int xmit_lock_owner;
|
|
/*
|
|
* please use this field instead of dev->trans_start
|
|
*/
|
|
unsigned long trans_start;
|
|
u64 tx_bytes;
|
|
u64 tx_packets;
|
|
u64 tx_dropped;
|
|
} ____cacheline_aligned_in_smp;
|
|
|
|
#ifdef CONFIG_RPS
|
|
/*
|
|
* This structure holds an RPS map which can be of variable length. The
|
|
* map is an array of CPUs.
|
|
*/
|
|
struct rps_map {
|
|
unsigned int len;
|
|
struct rcu_head rcu;
|
|
u16 cpus[0];
|
|
};
|
|
#define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + (_num * sizeof(u16)))
|
|
|
|
/*
|
|
* The rps_dev_flow structure contains the mapping of a flow to a CPU and the
|
|
* tail pointer for that CPU's input queue at the time of last enqueue.
|
|
*/
|
|
struct rps_dev_flow {
|
|
u16 cpu;
|
|
u16 fill;
|
|
unsigned int last_qtail;
|
|
};
|
|
|
|
/*
|
|
* The rps_dev_flow_table structure contains a table of flow mappings.
|
|
*/
|
|
struct rps_dev_flow_table {
|
|
unsigned int mask;
|
|
struct rcu_head rcu;
|
|
struct work_struct free_work;
|
|
struct rps_dev_flow flows[0];
|
|
};
|
|
#define RPS_DEV_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_dev_flow_table) + \
|
|
(_num * sizeof(struct rps_dev_flow)))
|
|
|
|
/*
|
|
* The rps_sock_flow_table contains mappings of flows to the last CPU
|
|
* on which they were processed by the application (set in recvmsg).
|
|
*/
|
|
struct rps_sock_flow_table {
|
|
unsigned int mask;
|
|
u16 ents[0];
|
|
};
|
|
#define RPS_SOCK_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_sock_flow_table) + \
|
|
(_num * sizeof(u16)))
|
|
|
|
#define RPS_NO_CPU 0xffff
|
|
|
|
static inline void rps_record_sock_flow(struct rps_sock_flow_table *table,
|
|
u32 hash)
|
|
{
|
|
if (table && hash) {
|
|
unsigned int cpu, index = hash & table->mask;
|
|
|
|
/* We only give a hint, preemption can change cpu under us */
|
|
cpu = raw_smp_processor_id();
|
|
|
|
if (table->ents[index] != cpu)
|
|
table->ents[index] = cpu;
|
|
}
|
|
}
|
|
|
|
static inline void rps_reset_sock_flow(struct rps_sock_flow_table *table,
|
|
u32 hash)
|
|
{
|
|
if (table && hash)
|
|
table->ents[hash & table->mask] = RPS_NO_CPU;
|
|
}
|
|
|
|
extern struct rps_sock_flow_table __rcu *rps_sock_flow_table;
|
|
|
|
/* This structure contains an instance of an RX queue. */
|
|
struct netdev_rx_queue {
|
|
struct rps_map __rcu *rps_map;
|
|
struct rps_dev_flow_table __rcu *rps_flow_table;
|
|
struct kobject kobj;
|
|
struct netdev_rx_queue *first;
|
|
atomic_t count;
|
|
} ____cacheline_aligned_in_smp;
|
|
#endif /* CONFIG_RPS */
|
|
|
|
/*
|
|
* 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 rtnl_link_stats64* (*ndo_get_stats64)(struct net_device *dev,
|
|
* struct rtnl_link_stats64 *storage);
|
|
* struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);
|
|
* Called when a user wants to get the network device usage
|
|
* statistics. Drivers must do one of the following:
|
|
* 1. Define @ndo_get_stats64 to fill in a zero-initialised
|
|
* rtnl_link_stats64 structure passed by the caller.
|
|
* 2. Define @ndo_get_stats to update a net_device_stats structure
|
|
* (which should normally be dev->stats) and return a pointer to
|
|
* it. The structure may be changed asynchronously only if each
|
|
* field is written atomically.
|
|
* 3. Update dev->stats asynchronously and atomically, and define
|
|
* neither operation.
|
|
*
|
|
* 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);
|
|
*
|
|
* SR-IOV management functions.
|
|
* int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac);
|
|
* int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, u8 qos);
|
|
* int (*ndo_set_vf_tx_rate)(struct net_device *dev, int vf, int rate);
|
|
* int (*ndo_get_vf_config)(struct net_device *dev,
|
|
* int vf, struct ifla_vf_info *ivf);
|
|
* 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);
|
|
*/
|
|
#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);
|
|
void (*ndo_change_rx_flags)(struct net_device *dev,
|
|
int flags);
|
|
void (*ndo_set_rx_mode)(struct net_device *dev);
|
|
void (*ndo_set_multicast_list)(struct net_device *dev);
|
|
int (*ndo_set_mac_address)(struct net_device *dev,
|
|
void *addr);
|
|
int (*ndo_validate_addr)(struct net_device *dev);
|
|
int (*ndo_do_ioctl)(struct net_device *dev,
|
|
struct ifreq *ifr, int cmd);
|
|
int (*ndo_set_config)(struct net_device *dev,
|
|
struct ifmap *map);
|
|
int (*ndo_change_mtu)(struct net_device *dev,
|
|
int new_mtu);
|
|
int (*ndo_neigh_setup)(struct net_device *dev,
|
|
struct neigh_parms *);
|
|
void (*ndo_tx_timeout) (struct net_device *dev);
|
|
|
|
struct rtnl_link_stats64* (*ndo_get_stats64)(struct net_device *dev,
|
|
struct rtnl_link_stats64 *storage);
|
|
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
|
|
void (*ndo_poll_controller)(struct net_device *dev);
|
|
int (*ndo_netpoll_setup)(struct net_device *dev,
|
|
struct netpoll_info *info);
|
|
void (*ndo_netpoll_cleanup)(struct net_device *dev);
|
|
#endif
|
|
int (*ndo_set_vf_mac)(struct net_device *dev,
|
|
int queue, u8 *mac);
|
|
int (*ndo_set_vf_vlan)(struct net_device *dev,
|
|
int queue, u16 vlan, u8 qos);
|
|
int (*ndo_set_vf_tx_rate)(struct net_device *dev,
|
|
int vf, int rate);
|
|
int (*ndo_get_vf_config)(struct net_device *dev,
|
|
int vf,
|
|
struct ifla_vf_info *ivf);
|
|
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);
|
|
#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);
|
|
#define NETDEV_FCOE_WWNN 0
|
|
#define NETDEV_FCOE_WWPN 1
|
|
int (*ndo_fcoe_get_wwn)(struct net_device *dev,
|
|
u64 *wwn, int type);
|
|
#endif
|
|
};
|
|
|
|
/*
|
|
* The DEVICE structure.
|
|
* Actually, this whole structure is a big mistake. It mixes I/O
|
|
* data with strictly "high-level" data, and it has to know about
|
|
* almost every data structure used in the INET module.
|
|
*
|
|
* FIXME: cleanup struct net_device such that network protocol info
|
|
* moves out.
|
|
*/
|
|
|
|
struct net_device {
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
char name[IFNAMSIZ];
|
|
|
|
struct pm_qos_request_list pm_qos_req;
|
|
|
|
/* device name hash chain */
|
|
struct hlist_node name_hlist;
|
|
/* snmp alias */
|
|
char *ifalias;
|
|
|
|
/*
|
|
* I/O specific fields
|
|
* FIXME: Merge these and struct ifmap into one
|
|
*/
|
|
unsigned long mem_end; /* shared mem end */
|
|
unsigned long mem_start; /* shared mem start */
|
|
unsigned long base_addr; /* device I/O address */
|
|
unsigned int irq; /* device IRQ number */
|
|
|
|
/*
|
|
* Some hardware also needs these fields, but they are not
|
|
* part of the usual set specified in Space.c.
|
|
*/
|
|
|
|
unsigned char if_port; /* Selectable AUI, TP,..*/
|
|
unsigned char dma; /* DMA channel */
|
|
|
|
unsigned long state;
|
|
|
|
struct list_head dev_list;
|
|
struct list_head napi_list;
|
|
struct list_head unreg_list;
|
|
|
|
/* Net device features */
|
|
unsigned long features;
|
|
#define NETIF_F_SG 1 /* Scatter/gather IO. */
|
|
#define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */
|
|
#define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */
|
|
#define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */
|
|
#define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */
|
|
#define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */
|
|
#define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */
|
|
#define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */
|
|
#define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */
|
|
#define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */
|
|
#define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
|
|
#define NETIF_F_GSO 2048 /* Enable software GSO. */
|
|
#define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */
|
|
/* do not use LLTX in new drivers */
|
|
#define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */
|
|
#define NETIF_F_GRO 16384 /* Generic receive offload */
|
|
#define NETIF_F_LRO 32768 /* large receive offload */
|
|
|
|
/* the GSO_MASK reserves bits 16 through 23 */
|
|
#define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */
|
|
#define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */
|
|
#define NETIF_F_FCOE_MTU (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/
|
|
#define NETIF_F_NTUPLE (1 << 27) /* N-tuple filters supported */
|
|
#define NETIF_F_RXHASH (1 << 28) /* Receive hashing offload */
|
|
|
|
/* Segmentation offload features */
|
|
#define NETIF_F_GSO_SHIFT 16
|
|
#define NETIF_F_GSO_MASK 0x00ff0000
|
|
#define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
|
|
#define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT)
|
|
#define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)
|
|
#define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT)
|
|
#define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT)
|
|
#define NETIF_F_FSO (SKB_GSO_FCOE << NETIF_F_GSO_SHIFT)
|
|
|
|
/* List of features with software fallbacks. */
|
|
#define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | \
|
|
NETIF_F_TSO6 | NETIF_F_UFO)
|
|
|
|
|
|
#define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)
|
|
#define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)
|
|
#define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)
|
|
#define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)
|
|
|
|
/*
|
|
* If one device supports one of these features, then enable them
|
|
* for all in netdev_increment_features.
|
|
*/
|
|
#define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \
|
|
NETIF_F_SG | NETIF_F_HIGHDMA | \
|
|
NETIF_F_FRAGLIST)
|
|
|
|
/* Interface index. Unique device identifier */
|
|
int ifindex;
|
|
int iflink;
|
|
|
|
struct net_device_stats stats;
|
|
atomic_long_t rx_dropped; /* dropped packets by core network
|
|
* Do not use this in drivers.
|
|
*/
|
|
|
|
#ifdef CONFIG_WIRELESS_EXT
|
|
/* List of functions to handle Wireless Extensions (instead of ioctl).
|
|
* See <net/iw_handler.h> for details. Jean II */
|
|
const struct iw_handler_def * wireless_handlers;
|
|
/* Instance data managed by the core of Wireless Extensions. */
|
|
struct iw_public_data * wireless_data;
|
|
#endif
|
|
/* Management operations */
|
|
const struct net_device_ops *netdev_ops;
|
|
const struct ethtool_ops *ethtool_ops;
|
|
|
|
/* Hardware header description */
|
|
const struct header_ops *header_ops;
|
|
|
|
unsigned int flags; /* interface flags (a la BSD) */
|
|
unsigned short gflags;
|
|
unsigned int priv_flags; /* Like 'flags' but invisible to userspace. */
|
|
unsigned short padded; /* How much padding added by alloc_netdev() */
|
|
|
|
unsigned char operstate; /* RFC2863 operstate */
|
|
unsigned char link_mode; /* mapping policy to operstate */
|
|
|
|
unsigned int mtu; /* interface MTU value */
|
|
unsigned short type; /* interface hardware type */
|
|
unsigned short hard_header_len; /* hardware hdr length */
|
|
|
|
/* extra head- and tailroom the hardware may need, but not in all cases
|
|
* can this be guaranteed, especially tailroom. Some cases also use
|
|
* LL_MAX_HEADER instead to allocate the skb.
|
|
*/
|
|
unsigned short needed_headroom;
|
|
unsigned short needed_tailroom;
|
|
|
|
/* Interface address info. */
|
|
unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */
|
|
unsigned char addr_assign_type; /* hw address assignment type */
|
|
unsigned char addr_len; /* hardware address length */
|
|
unsigned short dev_id; /* for shared network cards */
|
|
|
|
spinlock_t addr_list_lock;
|
|
struct netdev_hw_addr_list uc; /* Unicast mac addresses */
|
|
struct netdev_hw_addr_list mc; /* Multicast mac addresses */
|
|
int uc_promisc;
|
|
unsigned int promiscuity;
|
|
unsigned int allmulti;
|
|
|
|
|
|
/* Protocol specific pointers */
|
|
|
|
#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
|
|
struct vlan_group __rcu *vlgrp; /* VLAN group */
|
|
#endif
|
|
#ifdef CONFIG_NET_DSA
|
|
void *dsa_ptr; /* dsa specific data */
|
|
#endif
|
|
void *atalk_ptr; /* AppleTalk link */
|
|
struct in_device __rcu *ip_ptr; /* IPv4 specific data */
|
|
void *dn_ptr; /* DECnet specific data */
|
|
struct inet6_dev __rcu *ip6_ptr; /* IPv6 specific data */
|
|
void *ec_ptr; /* Econet specific data */
|
|
void *ax25_ptr; /* AX.25 specific data */
|
|
struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data,
|
|
assign before registering */
|
|
|
|
/*
|
|
* Cache lines mostly used on receive path (including eth_type_trans())
|
|
*/
|
|
unsigned long last_rx; /* Time of last Rx
|
|
* This should not be set in
|
|
* drivers, unless really needed,
|
|
* because network stack (bonding)
|
|
* use it if/when necessary, to
|
|
* avoid dirtying this cache line.
|
|
*/
|
|
|
|
struct net_device *master; /* Pointer to master device of a group,
|
|
* which this device is member of.
|
|
*/
|
|
|
|
/* Interface address info used in eth_type_trans() */
|
|
unsigned char *dev_addr; /* hw address, (before bcast
|
|
because most packets are
|
|
unicast) */
|
|
|
|
struct netdev_hw_addr_list dev_addrs; /* list of device
|
|
hw addresses */
|
|
|
|
unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */
|
|
|
|
#ifdef CONFIG_RPS
|
|
struct kset *queues_kset;
|
|
|
|
struct netdev_rx_queue *_rx;
|
|
|
|
/* Number of RX queues allocated at register_netdev() time */
|
|
unsigned int num_rx_queues;
|
|
|
|
/* Number of RX queues currently active in device */
|
|
unsigned int real_num_rx_queues;
|
|
#endif
|
|
|
|
rx_handler_func_t *rx_handler;
|
|
void *rx_handler_data;
|
|
|
|
struct netdev_queue __rcu *ingress_queue;
|
|
|
|
/*
|
|
* Cache lines mostly used on transmit path
|
|
*/
|
|
struct netdev_queue *_tx ____cacheline_aligned_in_smp;
|
|
|
|
/* Number of TX queues allocated at alloc_netdev_mq() time */
|
|
unsigned int num_tx_queues;
|
|
|
|
/* Number of TX queues currently active in device */
|
|
unsigned int real_num_tx_queues;
|
|
|
|
/* root qdisc from userspace point of view */
|
|
struct Qdisc *qdisc;
|
|
|
|
unsigned long tx_queue_len; /* Max frames per queue allowed */
|
|
spinlock_t tx_global_lock;
|
|
|
|
/* These may be needed for future network-power-down code. */
|
|
|
|
/*
|
|
* trans_start here is expensive for high speed devices on SMP,
|
|
* please use netdev_queue->trans_start instead.
|
|
*/
|
|
unsigned long trans_start; /* Time (in jiffies) of last Tx */
|
|
|
|
int watchdog_timeo; /* used by dev_watchdog() */
|
|
struct timer_list watchdog_timer;
|
|
|
|
/* Number of references to this device */
|
|
int __percpu *pcpu_refcnt;
|
|
|
|
/* delayed register/unregister */
|
|
struct list_head todo_list;
|
|
/* device index hash chain */
|
|
struct hlist_node index_hlist;
|
|
|
|
struct list_head link_watch_list;
|
|
|
|
/* register/unregister state machine */
|
|
enum { NETREG_UNINITIALIZED=0,
|
|
NETREG_REGISTERED, /* completed register_netdevice */
|
|
NETREG_UNREGISTERING, /* called unregister_netdevice */
|
|
NETREG_UNREGISTERED, /* completed unregister todo */
|
|
NETREG_RELEASED, /* called free_netdev */
|
|
NETREG_DUMMY, /* dummy device for NAPI poll */
|
|
} reg_state:16;
|
|
|
|
enum {
|
|
RTNL_LINK_INITIALIZED,
|
|
RTNL_LINK_INITIALIZING,
|
|
} rtnl_link_state:16;
|
|
|
|
/* Called from unregister, can be used to call free_netdev */
|
|
void (*destructor)(struct net_device *dev);
|
|
|
|
#ifdef CONFIG_NETPOLL
|
|
struct netpoll_info *npinfo;
|
|
#endif
|
|
|
|
#ifdef CONFIG_NET_NS
|
|
/* Network namespace this network device is inside */
|
|
struct net *nd_net;
|
|
#endif
|
|
|
|
/* mid-layer private */
|
|
union {
|
|
void *ml_priv;
|
|
struct pcpu_lstats __percpu *lstats; /* loopback stats */
|
|
struct pcpu_tstats __percpu *tstats; /* tunnel stats */
|
|
struct pcpu_dstats __percpu *dstats; /* dummy stats */
|
|
};
|
|
/* GARP */
|
|
struct garp_port __rcu *garp_port;
|
|
|
|
/* class/net/name entry */
|
|
struct device dev;
|
|
/* space for optional device, statistics, and wireless sysfs groups */
|
|
const struct attribute_group *sysfs_groups[4];
|
|
|
|
/* rtnetlink link ops */
|
|
const struct rtnl_link_ops *rtnl_link_ops;
|
|
|
|
/* VLAN feature mask */
|
|
unsigned long vlan_features;
|
|
|
|
/* for setting kernel sock attribute on TCP connection setup */
|
|
#define GSO_MAX_SIZE 65536
|
|
unsigned int gso_max_size;
|
|
|
|
#ifdef CONFIG_DCB
|
|
/* Data Center Bridging netlink ops */
|
|
const struct dcbnl_rtnl_ops *dcbnl_ops;
|
|
#endif
|
|
|
|
#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
|
|
/* max exchange id for FCoE LRO by ddp */
|
|
unsigned int fcoe_ddp_xid;
|
|
#endif
|
|
/* n-tuple filter list attached to this device */
|
|
struct ethtool_rx_ntuple_list ethtool_ntuple_list;
|
|
|
|
/* phy device may attach itself for hardware timestamping */
|
|
struct phy_device *phydev;
|
|
};
|
|
#define to_net_dev(d) container_of(d, struct net_device, dev)
|
|
|
|
#define NETDEV_ALIGN 32
|
|
|
|
static inline
|
|
struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev,
|
|
unsigned int index)
|
|
{
|
|
return &dev->_tx[index];
|
|
}
|
|
|
|
static inline void netdev_for_each_tx_queue(struct net_device *dev,
|
|
void (*f)(struct net_device *,
|
|
struct netdev_queue *,
|
|
void *),
|
|
void *arg)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < dev->num_tx_queues; i++)
|
|
f(dev, &dev->_tx[i], arg);
|
|
}
|
|
|
|
/*
|
|
* Net namespace inlines
|
|
*/
|
|
static inline
|
|
struct net *dev_net(const struct net_device *dev)
|
|
{
|
|
return read_pnet(&dev->nd_net);
|
|
}
|
|
|
|
static inline
|
|
void dev_net_set(struct net_device *dev, struct net *net)
|
|
{
|
|
#ifdef CONFIG_NET_NS
|
|
release_net(dev->nd_net);
|
|
dev->nd_net = hold_net(net);
|
|
#endif
|
|
}
|
|
|
|
static inline bool netdev_uses_dsa_tags(struct net_device *dev)
|
|
{
|
|
#ifdef CONFIG_NET_DSA_TAG_DSA
|
|
if (dev->dsa_ptr != NULL)
|
|
return dsa_uses_dsa_tags(dev->dsa_ptr);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifndef CONFIG_NET_NS
|
|
static inline void skb_set_dev(struct sk_buff *skb, struct net_device *dev)
|
|
{
|
|
skb->dev = dev;
|
|
}
|
|
#else /* CONFIG_NET_NS */
|
|
void skb_set_dev(struct sk_buff *skb, struct net_device *dev);
|
|
#endif
|
|
|
|
static inline bool netdev_uses_trailer_tags(struct net_device *dev)
|
|
{
|
|
#ifdef CONFIG_NET_DSA_TAG_TRAILER
|
|
if (dev->dsa_ptr != NULL)
|
|
return dsa_uses_trailer_tags(dev->dsa_ptr);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* netdev_priv - access network device private data
|
|
* @dev: network device
|
|
*
|
|
* Get network device private data
|
|
*/
|
|
static inline void *netdev_priv(const struct net_device *dev)
|
|
{
|
|
return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN);
|
|
}
|
|
|
|
/* Set the sysfs physical device reference for the network logical device
|
|
* if set prior to registration will cause a symlink during initialization.
|
|
*/
|
|
#define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev))
|
|
|
|
/* Set the sysfs device type for the network logical device to allow
|
|
* fin grained indentification of different network device types. For
|
|
* example Ethernet, Wirelss LAN, Bluetooth, WiMAX etc.
|
|
*/
|
|
#define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype))
|
|
|
|
/**
|
|
* netif_napi_add - initialize a napi context
|
|
* @dev: network device
|
|
* @napi: napi context
|
|
* @poll: polling function
|
|
* @weight: default weight
|
|
*
|
|
* netif_napi_add() must be used to initialize a napi context prior to calling
|
|
* *any* of the other napi related functions.
|
|
*/
|
|
void netif_napi_add(struct net_device *dev, struct napi_struct *napi,
|
|
int (*poll)(struct napi_struct *, int), int weight);
|
|
|
|
/**
|
|
* netif_napi_del - remove a napi context
|
|
* @napi: napi context
|
|
*
|
|
* netif_napi_del() removes a napi context from the network device napi list
|
|
*/
|
|
void netif_napi_del(struct napi_struct *napi);
|
|
|
|
struct napi_gro_cb {
|
|
/* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */
|
|
void *frag0;
|
|
|
|
/* Length of frag0. */
|
|
unsigned int frag0_len;
|
|
|
|
/* This indicates where we are processing relative to skb->data. */
|
|
int data_offset;
|
|
|
|
/* This is non-zero if the packet may be of the same flow. */
|
|
int same_flow;
|
|
|
|
/* This is non-zero if the packet cannot be merged with the new skb. */
|
|
int flush;
|
|
|
|
/* Number of segments aggregated. */
|
|
int count;
|
|
|
|
/* Free the skb? */
|
|
int free;
|
|
};
|
|
|
|
#define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb)
|
|
|
|
struct packet_type {
|
|
__be16 type; /* This is really htons(ether_type). */
|
|
struct net_device *dev; /* NULL is wildcarded here */
|
|
int (*func) (struct sk_buff *,
|
|
struct net_device *,
|
|
struct packet_type *,
|
|
struct net_device *);
|
|
struct sk_buff *(*gso_segment)(struct sk_buff *skb,
|
|
int features);
|
|
int (*gso_send_check)(struct sk_buff *skb);
|
|
struct sk_buff **(*gro_receive)(struct sk_buff **head,
|
|
struct sk_buff *skb);
|
|
int (*gro_complete)(struct sk_buff *skb);
|
|
void *af_packet_priv;
|
|
struct list_head list;
|
|
};
|
|
|
|
#include <linux/interrupt.h>
|
|
#include <linux/notifier.h>
|
|
|
|
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) \
|
|
list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list)
|
|
#define for_each_netdev_rcu(net, d) \
|
|
list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list)
|
|
#define for_each_netdev_safe(net, d, n) \
|
|
list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list)
|
|
#define for_each_netdev_continue(net, d) \
|
|
list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list)
|
|
#define for_each_netdev_continue_rcu(net, d) \
|
|
list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list)
|
|
#define net_device_entry(lh) list_entry(lh, struct net_device, dev_list)
|
|
|
|
static inline struct net_device *next_net_device(struct net_device *dev)
|
|
{
|
|
struct list_head *lh;
|
|
struct net *net;
|
|
|
|
net = dev_net(dev);
|
|
lh = dev->dev_list.next;
|
|
return lh == &net->dev_base_head ? NULL : net_device_entry(lh);
|
|
}
|
|
|
|
static inline struct net_device *next_net_device_rcu(struct net_device *dev)
|
|
{
|
|
struct list_head *lh;
|
|
struct net *net;
|
|
|
|
net = dev_net(dev);
|
|
lh = rcu_dereference(dev->dev_list.next);
|
|
return lh == &net->dev_base_head ? NULL : net_device_entry(lh);
|
|
}
|
|
|
|
static inline struct net_device *first_net_device(struct net *net)
|
|
{
|
|
return list_empty(&net->dev_base_head) ? NULL :
|
|
net_device_entry(net->dev_base_head.next);
|
|
}
|
|
|
|
extern int netdev_boot_setup_check(struct net_device *dev);
|
|
extern unsigned long netdev_boot_base(const char *prefix, int unit);
|
|
extern struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *hwaddr);
|
|
extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type);
|
|
extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type);
|
|
extern void dev_add_pack(struct packet_type *pt);
|
|
extern void dev_remove_pack(struct packet_type *pt);
|
|
extern void __dev_remove_pack(struct packet_type *pt);
|
|
|
|
extern struct net_device *dev_get_by_flags_rcu(struct net *net, unsigned short flags,
|
|
unsigned short mask);
|
|
extern struct net_device *dev_get_by_name(struct net *net, const char *name);
|
|
extern struct net_device *dev_get_by_name_rcu(struct net *net, const char *name);
|
|
extern struct net_device *__dev_get_by_name(struct net *net, const char *name);
|
|
extern int dev_alloc_name(struct net_device *dev, const char *name);
|
|
extern int dev_open(struct net_device *dev);
|
|
extern int dev_close(struct net_device *dev);
|
|
extern void dev_disable_lro(struct net_device *dev);
|
|
extern int dev_queue_xmit(struct sk_buff *skb);
|
|
extern int register_netdevice(struct net_device *dev);
|
|
extern void unregister_netdevice_queue(struct net_device *dev,
|
|
struct list_head *head);
|
|
extern void unregister_netdevice_many(struct list_head *head);
|
|
static inline void unregister_netdevice(struct net_device *dev)
|
|
{
|
|
unregister_netdevice_queue(dev, NULL);
|
|
}
|
|
|
|
extern int netdev_refcnt_read(const struct net_device *dev);
|
|
extern void free_netdev(struct net_device *dev);
|
|
extern void synchronize_net(void);
|
|
extern int register_netdevice_notifier(struct notifier_block *nb);
|
|
extern int unregister_netdevice_notifier(struct notifier_block *nb);
|
|
extern int init_dummy_netdev(struct net_device *dev);
|
|
extern void netdev_resync_ops(struct net_device *dev);
|
|
|
|
extern int call_netdevice_notifiers(unsigned long val, 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 dev_restart(struct net_device *dev);
|
|
#ifdef CONFIG_NETPOLL_TRAP
|
|
extern int netpoll_trap(void);
|
|
#endif
|
|
extern int skb_gro_receive(struct sk_buff **head,
|
|
struct sk_buff *skb);
|
|
extern void skb_gro_reset_offset(struct sk_buff *skb);
|
|
|
|
static inline unsigned int skb_gro_offset(const struct sk_buff *skb)
|
|
{
|
|
return NAPI_GRO_CB(skb)->data_offset;
|
|
}
|
|
|
|
static inline unsigned int skb_gro_len(const struct sk_buff *skb)
|
|
{
|
|
return skb->len - NAPI_GRO_CB(skb)->data_offset;
|
|
}
|
|
|
|
static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len)
|
|
{
|
|
NAPI_GRO_CB(skb)->data_offset += len;
|
|
}
|
|
|
|
static inline void *skb_gro_header_fast(struct sk_buff *skb,
|
|
unsigned int offset)
|
|
{
|
|
return NAPI_GRO_CB(skb)->frag0 + offset;
|
|
}
|
|
|
|
static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen)
|
|
{
|
|
return NAPI_GRO_CB(skb)->frag0_len < hlen;
|
|
}
|
|
|
|
static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen,
|
|
unsigned int offset)
|
|
{
|
|
NAPI_GRO_CB(skb)->frag0 = NULL;
|
|
NAPI_GRO_CB(skb)->frag0_len = 0;
|
|
return pskb_may_pull(skb, hlen) ? skb->data + offset : NULL;
|
|
}
|
|
|
|
static inline void *skb_gro_mac_header(struct sk_buff *skb)
|
|
{
|
|
return NAPI_GRO_CB(skb)->frag0 ?: skb_mac_header(skb);
|
|
}
|
|
|
|
static inline void *skb_gro_network_header(struct sk_buff *skb)
|
|
{
|
|
return (NAPI_GRO_CB(skb)->frag0 ?: skb->data) +
|
|
skb_network_offset(skb);
|
|
}
|
|
|
|
static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev,
|
|
unsigned short type,
|
|
const void *daddr, const void *saddr,
|
|
unsigned len)
|
|
{
|
|
if (!dev->header_ops || !dev->header_ops->create)
|
|
return 0;
|
|
|
|
return dev->header_ops->create(skb, dev, type, daddr, saddr, len);
|
|
}
|
|
|
|
static inline int dev_parse_header(const struct sk_buff *skb,
|
|
unsigned char *haddr)
|
|
{
|
|
const struct net_device *dev = skb->dev;
|
|
|
|
if (!dev->header_ops || !dev->header_ops->parse)
|
|
return 0;
|
|
return dev->header_ops->parse(skb, haddr);
|
|
}
|
|
|
|
typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len);
|
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extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf);
|
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static inline int unregister_gifconf(unsigned int family)
|
|
{
|
|
return register_gifconf(family, NULL);
|
|
}
|
|
|
|
/*
|
|
* Incoming packets are placed on per-cpu queues
|
|
*/
|
|
struct softnet_data {
|
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struct Qdisc *output_queue;
|
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struct Qdisc **output_queue_tailp;
|
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struct list_head poll_list;
|
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struct sk_buff *completion_queue;
|
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struct sk_buff_head process_queue;
|
|
|
|
/* stats */
|
|
unsigned int processed;
|
|
unsigned int time_squeeze;
|
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unsigned int cpu_collision;
|
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unsigned int received_rps;
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|
|
|
#ifdef CONFIG_RPS
|
|
struct softnet_data *rps_ipi_list;
|
|
|
|
/* Elements below can be accessed between CPUs for RPS */
|
|
struct call_single_data csd ____cacheline_aligned_in_smp;
|
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struct softnet_data *rps_ipi_next;
|
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unsigned int cpu;
|
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unsigned int input_queue_head;
|
|
unsigned int input_queue_tail;
|
|
#endif
|
|
unsigned dropped;
|
|
struct sk_buff_head input_pkt_queue;
|
|
struct napi_struct backlog;
|
|
};
|
|
|
|
static inline void input_queue_head_incr(struct softnet_data *sd)
|
|
{
|
|
#ifdef CONFIG_RPS
|
|
sd->input_queue_head++;
|
|
#endif
|
|
}
|
|
|
|
static inline void input_queue_tail_incr_save(struct softnet_data *sd,
|
|
unsigned int *qtail)
|
|
{
|
|
#ifdef CONFIG_RPS
|
|
*qtail = ++sd->input_queue_tail;
|
|
#endif
|
|
}
|
|
|
|
DECLARE_PER_CPU_ALIGNED(struct softnet_data, softnet_data);
|
|
|
|
#define HAVE_NETIF_QUEUE
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|
|
|
extern void __netif_schedule(struct Qdisc *q);
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|
|
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static inline void netif_schedule_queue(struct netdev_queue *txq)
|
|
{
|
|
if (!test_bit(__QUEUE_STATE_XOFF, &txq->state))
|
|
__netif_schedule(txq->qdisc);
|
|
}
|
|
|
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static inline void netif_tx_schedule_all(struct net_device *dev)
|
|
{
|
|
unsigned int i;
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|
|
|
for (i = 0; i < dev->num_tx_queues; i++)
|
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netif_schedule_queue(netdev_get_tx_queue(dev, i));
|
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}
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|
|
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static inline void netif_tx_start_queue(struct netdev_queue *dev_queue)
|
|
{
|
|
clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state);
|
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}
|
|
|
|
/**
|
|
* netif_start_queue - allow transmit
|
|
* @dev: network device
|
|
*
|
|
* Allow upper layers to call the device hard_start_xmit routine.
|
|
*/
|
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static inline void netif_start_queue(struct net_device *dev)
|
|
{
|
|
netif_tx_start_queue(netdev_get_tx_queue(dev, 0));
|
|
}
|
|
|
|
static inline void netif_tx_start_all_queues(struct net_device *dev)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < dev->num_tx_queues; i++) {
|
|
struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
|
|
netif_tx_start_queue(txq);
|
|
}
|
|
}
|
|
|
|
static inline void netif_tx_wake_queue(struct netdev_queue *dev_queue)
|
|
{
|
|
#ifdef CONFIG_NETPOLL_TRAP
|
|
if (netpoll_trap()) {
|
|
netif_tx_start_queue(dev_queue);
|
|
return;
|
|
}
|
|
#endif
|
|
if (test_and_clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state))
|
|
__netif_schedule(dev_queue->qdisc);
|
|
}
|
|
|
|
/**
|
|
* netif_wake_queue - restart transmit
|
|
* @dev: network device
|
|
*
|
|
* Allow upper layers to call the device hard_start_xmit routine.
|
|
* Used for flow control when transmit resources are available.
|
|
*/
|
|
static inline void netif_wake_queue(struct net_device *dev)
|
|
{
|
|
netif_tx_wake_queue(netdev_get_tx_queue(dev, 0));
|
|
}
|
|
|
|
static inline void netif_tx_wake_all_queues(struct net_device *dev)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < dev->num_tx_queues; i++) {
|
|
struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
|
|
netif_tx_wake_queue(txq);
|
|
}
|
|
}
|
|
|
|
static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue)
|
|
{
|
|
set_bit(__QUEUE_STATE_XOFF, &dev_queue->state);
|
|
}
|
|
|
|
/**
|
|
* netif_stop_queue - stop transmitted packets
|
|
* @dev: network device
|
|
*
|
|
* Stop upper layers calling the device hard_start_xmit routine.
|
|
* Used for flow control when transmit resources are unavailable.
|
|
*/
|
|
static inline void netif_stop_queue(struct net_device *dev)
|
|
{
|
|
netif_tx_stop_queue(netdev_get_tx_queue(dev, 0));
|
|
}
|
|
|
|
static inline void netif_tx_stop_all_queues(struct net_device *dev)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < dev->num_tx_queues; i++) {
|
|
struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
|
|
netif_tx_stop_queue(txq);
|
|
}
|
|
}
|
|
|
|
static inline int netif_tx_queue_stopped(const struct netdev_queue *dev_queue)
|
|
{
|
|
return test_bit(__QUEUE_STATE_XOFF, &dev_queue->state);
|
|
}
|
|
|
|
/**
|
|
* netif_queue_stopped - test if transmit queue is flowblocked
|
|
* @dev: network device
|
|
*
|
|
* Test if transmit queue on device is currently unable to send.
|
|
*/
|
|
static inline int netif_queue_stopped(const struct net_device *dev)
|
|
{
|
|
return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0));
|
|
}
|
|
|
|
static inline int netif_tx_queue_frozen(const struct netdev_queue *dev_queue)
|
|
{
|
|
return test_bit(__QUEUE_STATE_FROZEN, &dev_queue->state);
|
|
}
|
|
|
|
/**
|
|
* netif_running - test if up
|
|
* @dev: network device
|
|
*
|
|
* Test if the device has been brought up.
|
|
*/
|
|
static inline int netif_running(const struct net_device *dev)
|
|
{
|
|
return test_bit(__LINK_STATE_START, &dev->state);
|
|
}
|
|
|
|
/*
|
|
* Routines to manage the subqueues on a device. We only need start
|
|
* stop, and a check if it's stopped. All other device management is
|
|
* done at the overall netdevice level.
|
|
* Also test the device if we're multiqueue.
|
|
*/
|
|
|
|
/**
|
|
* netif_start_subqueue - allow sending packets on subqueue
|
|
* @dev: network device
|
|
* @queue_index: sub queue index
|
|
*
|
|
* Start individual transmit queue of a device with multiple transmit queues.
|
|
*/
|
|
static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index)
|
|
{
|
|
struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
|
|
|
|
netif_tx_start_queue(txq);
|
|
}
|
|
|
|
/**
|
|
* netif_stop_subqueue - stop sending packets on subqueue
|
|
* @dev: network device
|
|
* @queue_index: sub queue index
|
|
*
|
|
* Stop individual transmit queue of a device with multiple transmit queues.
|
|
*/
|
|
static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index)
|
|
{
|
|
struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
|
|
#ifdef CONFIG_NETPOLL_TRAP
|
|
if (netpoll_trap())
|
|
return;
|
|
#endif
|
|
netif_tx_stop_queue(txq);
|
|
}
|
|
|
|
/**
|
|
* netif_subqueue_stopped - test status of subqueue
|
|
* @dev: network device
|
|
* @queue_index: sub queue index
|
|
*
|
|
* Check individual transmit queue of a device with multiple transmit queues.
|
|
*/
|
|
static inline int __netif_subqueue_stopped(const struct net_device *dev,
|
|
u16 queue_index)
|
|
{
|
|
struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
|
|
|
|
return netif_tx_queue_stopped(txq);
|
|
}
|
|
|
|
static inline int netif_subqueue_stopped(const struct net_device *dev,
|
|
struct sk_buff *skb)
|
|
{
|
|
return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb));
|
|
}
|
|
|
|
/**
|
|
* netif_wake_subqueue - allow sending packets on subqueue
|
|
* @dev: network device
|
|
* @queue_index: sub queue index
|
|
*
|
|
* Resume individual transmit queue of a device with multiple transmit queues.
|
|
*/
|
|
static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index)
|
|
{
|
|
struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
|
|
#ifdef CONFIG_NETPOLL_TRAP
|
|
if (netpoll_trap())
|
|
return;
|
|
#endif
|
|
if (test_and_clear_bit(__QUEUE_STATE_XOFF, &txq->state))
|
|
__netif_schedule(txq->qdisc);
|
|
}
|
|
|
|
/**
|
|
* netif_is_multiqueue - test if device has multiple transmit queues
|
|
* @dev: network device
|
|
*
|
|
* Check if device has multiple transmit queues
|
|
*/
|
|
static inline int netif_is_multiqueue(const struct net_device *dev)
|
|
{
|
|
return dev->num_tx_queues > 1;
|
|
}
|
|
|
|
extern int netif_set_real_num_tx_queues(struct net_device *dev,
|
|
unsigned int txq);
|
|
|
|
#ifdef CONFIG_RPS
|
|
extern int netif_set_real_num_rx_queues(struct net_device *dev,
|
|
unsigned int rxq);
|
|
#else
|
|
static inline int netif_set_real_num_rx_queues(struct net_device *dev,
|
|
unsigned int rxq)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static inline int netif_copy_real_num_queues(struct net_device *to_dev,
|
|
const struct net_device *from_dev)
|
|
{
|
|
netif_set_real_num_tx_queues(to_dev, from_dev->real_num_tx_queues);
|
|
#ifdef CONFIG_RPS
|
|
return netif_set_real_num_rx_queues(to_dev,
|
|
from_dev->real_num_rx_queues);
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
/* Use this variant when it is known for sure that it
|
|
* is executing from hardware interrupt context or with hardware interrupts
|
|
* disabled.
|
|
*/
|
|
extern void dev_kfree_skb_irq(struct sk_buff *skb);
|
|
|
|
/* Use this variant in places where it could be invoked
|
|
* from either hardware interrupt or other context, with hardware interrupts
|
|
* either disabled or enabled.
|
|
*/
|
|
extern void dev_kfree_skb_any(struct sk_buff *skb);
|
|
|
|
#define HAVE_NETIF_RX 1
|
|
extern int netif_rx(struct sk_buff *skb);
|
|
extern int netif_rx_ni(struct sk_buff *skb);
|
|
#define HAVE_NETIF_RECEIVE_SKB 1
|
|
extern int netif_receive_skb(struct sk_buff *skb);
|
|
extern gro_result_t dev_gro_receive(struct napi_struct *napi,
|
|
struct sk_buff *skb);
|
|
extern gro_result_t napi_skb_finish(gro_result_t ret, struct sk_buff *skb);
|
|
extern gro_result_t napi_gro_receive(struct napi_struct *napi,
|
|
struct sk_buff *skb);
|
|
extern void napi_gro_flush(struct napi_struct *napi);
|
|
extern struct sk_buff * napi_get_frags(struct napi_struct *napi);
|
|
extern gro_result_t napi_frags_finish(struct napi_struct *napi,
|
|
struct sk_buff *skb,
|
|
gro_result_t ret);
|
|
extern struct sk_buff * napi_frags_skb(struct napi_struct *napi);
|
|
extern gro_result_t napi_gro_frags(struct napi_struct *napi);
|
|
|
|
static inline void napi_free_frags(struct napi_struct *napi)
|
|
{
|
|
kfree_skb(napi->skb);
|
|
napi->skb = NULL;
|
|
}
|
|
|
|
extern int netdev_rx_handler_register(struct net_device *dev,
|
|
rx_handler_func_t *rx_handler,
|
|
void *rx_handler_data);
|
|
extern void netdev_rx_handler_unregister(struct net_device *dev);
|
|
|
|
extern int dev_valid_name(const char *name);
|
|
extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *);
|
|
extern int dev_ethtool(struct net *net, struct ifreq *);
|
|
extern unsigned dev_get_flags(const struct net_device *);
|
|
extern int __dev_change_flags(struct net_device *, unsigned int flags);
|
|
extern int dev_change_flags(struct net_device *, unsigned);
|
|
extern void __dev_notify_flags(struct net_device *, unsigned int old_flags);
|
|
extern int dev_change_name(struct net_device *, const char *);
|
|
extern int dev_set_alias(struct net_device *, const char *, size_t);
|
|
extern int dev_change_net_namespace(struct net_device *,
|
|
struct net *, const char *);
|
|
extern int dev_set_mtu(struct net_device *, int);
|
|
extern int dev_set_mac_address(struct net_device *,
|
|
struct sockaddr *);
|
|
extern int dev_hard_start_xmit(struct sk_buff *skb,
|
|
struct net_device *dev,
|
|
struct netdev_queue *txq);
|
|
extern int dev_forward_skb(struct net_device *dev,
|
|
struct sk_buff *skb);
|
|
|
|
extern int netdev_budget;
|
|
|
|
/* Called by rtnetlink.c:rtnl_unlock() */
|
|
extern void netdev_run_todo(void);
|
|
|
|
/**
|
|
* dev_put - release reference to device
|
|
* @dev: network device
|
|
*
|
|
* Release reference to device to allow it to be freed.
|
|
*/
|
|
static inline void dev_put(struct net_device *dev)
|
|
{
|
|
irqsafe_cpu_dec(*dev->pcpu_refcnt);
|
|
}
|
|
|
|
/**
|
|
* dev_hold - get reference to device
|
|
* @dev: network device
|
|
*
|
|
* Hold reference to device to keep it from being freed.
|
|
*/
|
|
static inline void dev_hold(struct net_device *dev)
|
|
{
|
|
irqsafe_cpu_inc(*dev->pcpu_refcnt);
|
|
}
|
|
|
|
/* Carrier loss detection, dial on demand. The functions netif_carrier_on
|
|
* and _off may be called from IRQ context, but it is caller
|
|
* who is responsible for serialization of these calls.
|
|
*
|
|
* The name carrier is inappropriate, these functions should really be
|
|
* called netif_lowerlayer_*() because they represent the state of any
|
|
* kind of lower layer not just hardware media.
|
|
*/
|
|
|
|
extern void linkwatch_fire_event(struct net_device *dev);
|
|
extern void linkwatch_forget_dev(struct net_device *dev);
|
|
|
|
/**
|
|
* netif_carrier_ok - test if carrier present
|
|
* @dev: network device
|
|
*
|
|
* Check if carrier is present on device
|
|
*/
|
|
static inline int netif_carrier_ok(const struct net_device *dev)
|
|
{
|
|
return !test_bit(__LINK_STATE_NOCARRIER, &dev->state);
|
|
}
|
|
|
|
extern unsigned long dev_trans_start(struct net_device *dev);
|
|
|
|
extern void __netdev_watchdog_up(struct net_device *dev);
|
|
|
|
extern void netif_carrier_on(struct net_device *dev);
|
|
|
|
extern void netif_carrier_off(struct net_device *dev);
|
|
|
|
extern void netif_notify_peers(struct net_device *dev);
|
|
|
|
/**
|
|
* netif_dormant_on - mark device as dormant.
|
|
* @dev: network device
|
|
*
|
|
* Mark device as dormant (as per RFC2863).
|
|
*
|
|
* The dormant state indicates that the relevant interface is not
|
|
* actually in a condition to pass packets (i.e., it is not 'up') but is
|
|
* in a "pending" state, waiting for some external event. For "on-
|
|
* demand" interfaces, this new state identifies the situation where the
|
|
* interface is waiting for events to place it in the up state.
|
|
*
|
|
*/
|
|
static inline void netif_dormant_on(struct net_device *dev)
|
|
{
|
|
if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state))
|
|
linkwatch_fire_event(dev);
|
|
}
|
|
|
|
/**
|
|
* netif_dormant_off - set device as not dormant.
|
|
* @dev: network device
|
|
*
|
|
* Device is not in dormant state.
|
|
*/
|
|
static inline void netif_dormant_off(struct net_device *dev)
|
|
{
|
|
if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state))
|
|
linkwatch_fire_event(dev);
|
|
}
|
|
|
|
/**
|
|
* netif_dormant - test if carrier present
|
|
* @dev: network device
|
|
*
|
|
* Check if carrier is present on device
|
|
*/
|
|
static inline int netif_dormant(const struct net_device *dev)
|
|
{
|
|
return test_bit(__LINK_STATE_DORMANT, &dev->state);
|
|
}
|
|
|
|
|
|
/**
|
|
* netif_oper_up - test if device is operational
|
|
* @dev: network device
|
|
*
|
|
* Check if carrier is operational
|
|
*/
|
|
static inline int netif_oper_up(const struct net_device *dev)
|
|
{
|
|
return (dev->operstate == IF_OPER_UP ||
|
|
dev->operstate == IF_OPER_UNKNOWN /* backward compat */);
|
|
}
|
|
|
|
/**
|
|
* netif_device_present - is device available or removed
|
|
* @dev: network device
|
|
*
|
|
* Check if device has not been removed from system.
|
|
*/
|
|
static inline int netif_device_present(struct net_device *dev)
|
|
{
|
|
return test_bit(__LINK_STATE_PRESENT, &dev->state);
|
|
}
|
|
|
|
extern void netif_device_detach(struct net_device *dev);
|
|
|
|
extern void netif_device_attach(struct net_device *dev);
|
|
|
|
/*
|
|
* Network interface message level settings
|
|
*/
|
|
#define HAVE_NETIF_MSG 1
|
|
|
|
enum {
|
|
NETIF_MSG_DRV = 0x0001,
|
|
NETIF_MSG_PROBE = 0x0002,
|
|
NETIF_MSG_LINK = 0x0004,
|
|
NETIF_MSG_TIMER = 0x0008,
|
|
NETIF_MSG_IFDOWN = 0x0010,
|
|
NETIF_MSG_IFUP = 0x0020,
|
|
NETIF_MSG_RX_ERR = 0x0040,
|
|
NETIF_MSG_TX_ERR = 0x0080,
|
|
NETIF_MSG_TX_QUEUED = 0x0100,
|
|
NETIF_MSG_INTR = 0x0200,
|
|
NETIF_MSG_TX_DONE = 0x0400,
|
|
NETIF_MSG_RX_STATUS = 0x0800,
|
|
NETIF_MSG_PKTDATA = 0x1000,
|
|
NETIF_MSG_HW = 0x2000,
|
|
NETIF_MSG_WOL = 0x4000,
|
|
};
|
|
|
|
#define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV)
|
|
#define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE)
|
|
#define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK)
|
|
#define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER)
|
|
#define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN)
|
|
#define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP)
|
|
#define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR)
|
|
#define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR)
|
|
#define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED)
|
|
#define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR)
|
|
#define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE)
|
|
#define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS)
|
|
#define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA)
|
|
#define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW)
|
|
#define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL)
|
|
|
|
static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits)
|
|
{
|
|
/* use default */
|
|
if (debug_value < 0 || debug_value >= (sizeof(u32) * 8))
|
|
return default_msg_enable_bits;
|
|
if (debug_value == 0) /* no output */
|
|
return 0;
|
|
/* set low N bits */
|
|
return (1 << debug_value) - 1;
|
|
}
|
|
|
|
static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu)
|
|
{
|
|
spin_lock(&txq->_xmit_lock);
|
|
txq->xmit_lock_owner = cpu;
|
|
}
|
|
|
|
static inline void __netif_tx_lock_bh(struct netdev_queue *txq)
|
|
{
|
|
spin_lock_bh(&txq->_xmit_lock);
|
|
txq->xmit_lock_owner = smp_processor_id();
|
|
}
|
|
|
|
static inline int __netif_tx_trylock(struct netdev_queue *txq)
|
|
{
|
|
int ok = spin_trylock(&txq->_xmit_lock);
|
|
if (likely(ok))
|
|
txq->xmit_lock_owner = smp_processor_id();
|
|
return ok;
|
|
}
|
|
|
|
static inline void __netif_tx_unlock(struct netdev_queue *txq)
|
|
{
|
|
txq->xmit_lock_owner = -1;
|
|
spin_unlock(&txq->_xmit_lock);
|
|
}
|
|
|
|
static inline void __netif_tx_unlock_bh(struct netdev_queue *txq)
|
|
{
|
|
txq->xmit_lock_owner = -1;
|
|
spin_unlock_bh(&txq->_xmit_lock);
|
|
}
|
|
|
|
static inline void txq_trans_update(struct netdev_queue *txq)
|
|
{
|
|
if (txq->xmit_lock_owner != -1)
|
|
txq->trans_start = jiffies;
|
|
}
|
|
|
|
/**
|
|
* netif_tx_lock - grab network device transmit lock
|
|
* @dev: network device
|
|
*
|
|
* Get network device transmit lock
|
|
*/
|
|
static inline void netif_tx_lock(struct net_device *dev)
|
|
{
|
|
unsigned int i;
|
|
int cpu;
|
|
|
|
spin_lock(&dev->tx_global_lock);
|
|
cpu = smp_processor_id();
|
|
for (i = 0; i < dev->num_tx_queues; i++) {
|
|
struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
|
|
|
|
/* We are the only thread of execution doing a
|
|
* freeze, but we have to grab the _xmit_lock in
|
|
* order to synchronize with threads which are in
|
|
* the ->hard_start_xmit() handler and already
|
|
* checked the frozen bit.
|
|
*/
|
|
__netif_tx_lock(txq, cpu);
|
|
set_bit(__QUEUE_STATE_FROZEN, &txq->state);
|
|
__netif_tx_unlock(txq);
|
|
}
|
|
}
|
|
|
|
static inline void netif_tx_lock_bh(struct net_device *dev)
|
|
{
|
|
local_bh_disable();
|
|
netif_tx_lock(dev);
|
|
}
|
|
|
|
static inline void netif_tx_unlock(struct net_device *dev)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < dev->num_tx_queues; i++) {
|
|
struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
|
|
|
|
/* No need to grab the _xmit_lock here. If the
|
|
* queue is not stopped for another reason, we
|
|
* force a schedule.
|
|
*/
|
|
clear_bit(__QUEUE_STATE_FROZEN, &txq->state);
|
|
netif_schedule_queue(txq);
|
|
}
|
|
spin_unlock(&dev->tx_global_lock);
|
|
}
|
|
|
|
static inline void netif_tx_unlock_bh(struct net_device *dev)
|
|
{
|
|
netif_tx_unlock(dev);
|
|
local_bh_enable();
|
|
}
|
|
|
|
#define HARD_TX_LOCK(dev, txq, cpu) { \
|
|
if ((dev->features & NETIF_F_LLTX) == 0) { \
|
|
__netif_tx_lock(txq, cpu); \
|
|
} \
|
|
}
|
|
|
|
#define HARD_TX_UNLOCK(dev, txq) { \
|
|
if ((dev->features & NETIF_F_LLTX) == 0) { \
|
|
__netif_tx_unlock(txq); \
|
|
} \
|
|
}
|
|
|
|
static inline void netif_tx_disable(struct net_device *dev)
|
|
{
|
|
unsigned int i;
|
|
int cpu;
|
|
|
|
local_bh_disable();
|
|
cpu = smp_processor_id();
|
|
for (i = 0; i < dev->num_tx_queues; i++) {
|
|
struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
|
|
|
|
__netif_tx_lock(txq, cpu);
|
|
netif_tx_stop_queue(txq);
|
|
__netif_tx_unlock(txq);
|
|
}
|
|
local_bh_enable();
|
|
}
|
|
|
|
static inline void netif_addr_lock(struct net_device *dev)
|
|
{
|
|
spin_lock(&dev->addr_list_lock);
|
|
}
|
|
|
|
static inline void netif_addr_lock_bh(struct net_device *dev)
|
|
{
|
|
spin_lock_bh(&dev->addr_list_lock);
|
|
}
|
|
|
|
static inline void netif_addr_unlock(struct net_device *dev)
|
|
{
|
|
spin_unlock(&dev->addr_list_lock);
|
|
}
|
|
|
|
static inline void netif_addr_unlock_bh(struct net_device *dev)
|
|
{
|
|
spin_unlock_bh(&dev->addr_list_lock);
|
|
}
|
|
|
|
/*
|
|
* dev_addrs walker. Should be used only for read access. Call with
|
|
* rcu_read_lock held.
|
|
*/
|
|
#define for_each_dev_addr(dev, ha) \
|
|
list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list)
|
|
|
|
/* These functions live elsewhere (drivers/net/net_init.c, but related) */
|
|
|
|
extern void ether_setup(struct net_device *dev);
|
|
|
|
/* Support for loadable net-drivers */
|
|
extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
|
|
void (*setup)(struct net_device *),
|
|
unsigned int queue_count);
|
|
#define alloc_netdev(sizeof_priv, name, setup) \
|
|
alloc_netdev_mq(sizeof_priv, name, setup, 1)
|
|
extern int register_netdev(struct net_device *dev);
|
|
extern void unregister_netdev(struct net_device *dev);
|
|
|
|
/* General hardware address lists handling functions */
|
|
extern int __hw_addr_add_multiple(struct netdev_hw_addr_list *to_list,
|
|
struct netdev_hw_addr_list *from_list,
|
|
int addr_len, unsigned char addr_type);
|
|
extern void __hw_addr_del_multiple(struct netdev_hw_addr_list *to_list,
|
|
struct netdev_hw_addr_list *from_list,
|
|
int addr_len, unsigned char addr_type);
|
|
extern int __hw_addr_sync(struct netdev_hw_addr_list *to_list,
|
|
struct netdev_hw_addr_list *from_list,
|
|
int addr_len);
|
|
extern void __hw_addr_unsync(struct netdev_hw_addr_list *to_list,
|
|
struct netdev_hw_addr_list *from_list,
|
|
int addr_len);
|
|
extern void __hw_addr_flush(struct netdev_hw_addr_list *list);
|
|
extern void __hw_addr_init(struct netdev_hw_addr_list *list);
|
|
|
|
/* Functions used for device addresses handling */
|
|
extern int dev_addr_add(struct net_device *dev, unsigned char *addr,
|
|
unsigned char addr_type);
|
|
extern int dev_addr_del(struct net_device *dev, unsigned char *addr,
|
|
unsigned char addr_type);
|
|
extern int dev_addr_add_multiple(struct net_device *to_dev,
|
|
struct net_device *from_dev,
|
|
unsigned char addr_type);
|
|
extern int dev_addr_del_multiple(struct net_device *to_dev,
|
|
struct net_device *from_dev,
|
|
unsigned char addr_type);
|
|
extern void dev_addr_flush(struct net_device *dev);
|
|
extern int dev_addr_init(struct net_device *dev);
|
|
|
|
/* Functions used for unicast addresses handling */
|
|
extern int dev_uc_add(struct net_device *dev, unsigned char *addr);
|
|
extern int dev_uc_del(struct net_device *dev, unsigned char *addr);
|
|
extern int dev_uc_sync(struct net_device *to, struct net_device *from);
|
|
extern void dev_uc_unsync(struct net_device *to, struct net_device *from);
|
|
extern void dev_uc_flush(struct net_device *dev);
|
|
extern void dev_uc_init(struct net_device *dev);
|
|
|
|
/* Functions used for multicast addresses handling */
|
|
extern int dev_mc_add(struct net_device *dev, unsigned char *addr);
|
|
extern int dev_mc_add_global(struct net_device *dev, unsigned char *addr);
|
|
extern int dev_mc_del(struct net_device *dev, unsigned char *addr);
|
|
extern int dev_mc_del_global(struct net_device *dev, unsigned char *addr);
|
|
extern int dev_mc_sync(struct net_device *to, struct net_device *from);
|
|
extern void dev_mc_unsync(struct net_device *to, struct net_device *from);
|
|
extern void dev_mc_flush(struct net_device *dev);
|
|
extern void dev_mc_init(struct net_device *dev);
|
|
|
|
/* Functions used for secondary unicast and multicast support */
|
|
extern void dev_set_rx_mode(struct net_device *dev);
|
|
extern void __dev_set_rx_mode(struct net_device *dev);
|
|
extern int dev_set_promiscuity(struct net_device *dev, int inc);
|
|
extern int dev_set_allmulti(struct net_device *dev, int inc);
|
|
extern void netdev_state_change(struct net_device *dev);
|
|
extern int netdev_bonding_change(struct net_device *dev,
|
|
unsigned long event);
|
|
extern void netdev_features_change(struct net_device *dev);
|
|
/* Load a device via the kmod */
|
|
extern void dev_load(struct net *net, const char *name);
|
|
extern void dev_mcast_init(void);
|
|
extern struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev,
|
|
struct rtnl_link_stats64 *storage);
|
|
extern void dev_txq_stats_fold(const struct net_device *dev,
|
|
struct rtnl_link_stats64 *stats);
|
|
|
|
extern int netdev_max_backlog;
|
|
extern int netdev_tstamp_prequeue;
|
|
extern int weight_p;
|
|
extern int netdev_set_master(struct net_device *dev, struct net_device *master);
|
|
extern int skb_checksum_help(struct sk_buff *skb);
|
|
extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features);
|
|
#ifdef CONFIG_BUG
|
|
extern void netdev_rx_csum_fault(struct net_device *dev);
|
|
#else
|
|
static inline void netdev_rx_csum_fault(struct net_device *dev)
|
|
{
|
|
}
|
|
#endif
|
|
/* rx skb timestamps */
|
|
extern void net_enable_timestamp(void);
|
|
extern void net_disable_timestamp(void);
|
|
|
|
#ifdef CONFIG_PROC_FS
|
|
extern void *dev_seq_start(struct seq_file *seq, loff_t *pos);
|
|
extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos);
|
|
extern void dev_seq_stop(struct seq_file *seq, void *v);
|
|
#endif
|
|
|
|
extern int netdev_class_create_file(struct class_attribute *class_attr);
|
|
extern void netdev_class_remove_file(struct class_attribute *class_attr);
|
|
|
|
extern struct kobj_ns_type_operations net_ns_type_operations;
|
|
|
|
extern char *netdev_drivername(const struct net_device *dev, char *buffer, int len);
|
|
|
|
extern void linkwatch_run_queue(void);
|
|
|
|
unsigned long netdev_increment_features(unsigned long all, unsigned long one,
|
|
unsigned long mask);
|
|
unsigned long netdev_fix_features(unsigned long features, const char *name);
|
|
|
|
void netif_stacked_transfer_operstate(const struct net_device *rootdev,
|
|
struct net_device *dev);
|
|
|
|
static inline int net_gso_ok(int features, int gso_type)
|
|
{
|
|
int feature = gso_type << NETIF_F_GSO_SHIFT;
|
|
return (features & feature) == feature;
|
|
}
|
|
|
|
static inline int skb_gso_ok(struct sk_buff *skb, int features)
|
|
{
|
|
return net_gso_ok(features, skb_shinfo(skb)->gso_type) &&
|
|
(!skb_has_frag_list(skb) || (features & NETIF_F_FRAGLIST));
|
|
}
|
|
|
|
static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb)
|
|
{
|
|
if (skb_is_gso(skb)) {
|
|
int features = dev->features;
|
|
|
|
if (skb->protocol == htons(ETH_P_8021Q) || skb->vlan_tci)
|
|
features &= dev->vlan_features;
|
|
|
|
return (!skb_gso_ok(skb, features) ||
|
|
unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline void netif_set_gso_max_size(struct net_device *dev,
|
|
unsigned int size)
|
|
{
|
|
dev->gso_max_size = size;
|
|
}
|
|
|
|
extern int __skb_bond_should_drop(struct sk_buff *skb,
|
|
struct net_device *master);
|
|
|
|
static inline int skb_bond_should_drop(struct sk_buff *skb,
|
|
struct net_device *master)
|
|
{
|
|
if (master)
|
|
return __skb_bond_should_drop(skb, master);
|
|
return 0;
|
|
}
|
|
|
|
extern struct pernet_operations __net_initdata loopback_net_ops;
|
|
|
|
static inline int dev_ethtool_get_settings(struct net_device *dev,
|
|
struct ethtool_cmd *cmd)
|
|
{
|
|
if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings)
|
|
return -EOPNOTSUPP;
|
|
return dev->ethtool_ops->get_settings(dev, cmd);
|
|
}
|
|
|
|
static inline u32 dev_ethtool_get_rx_csum(struct net_device *dev)
|
|
{
|
|
if (!dev->ethtool_ops || !dev->ethtool_ops->get_rx_csum)
|
|
return 0;
|
|
return dev->ethtool_ops->get_rx_csum(dev);
|
|
}
|
|
|
|
static inline u32 dev_ethtool_get_flags(struct net_device *dev)
|
|
{
|
|
if (!dev->ethtool_ops || !dev->ethtool_ops->get_flags)
|
|
return 0;
|
|
return dev->ethtool_ops->get_flags(dev);
|
|
}
|
|
|
|
/* Logging, debugging and troubleshooting/diagnostic helpers. */
|
|
|
|
/* netdev_printk helpers, similar to dev_printk */
|
|
|
|
static inline const char *netdev_name(const struct net_device *dev)
|
|
{
|
|
if (dev->reg_state != NETREG_REGISTERED)
|
|
return "(unregistered net_device)";
|
|
return dev->name;
|
|
}
|
|
|
|
extern int netdev_printk(const char *level, const struct net_device *dev,
|
|
const char *format, ...)
|
|
__attribute__ ((format (printf, 3, 4)));
|
|
extern int netdev_emerg(const struct net_device *dev, const char *format, ...)
|
|
__attribute__ ((format (printf, 2, 3)));
|
|
extern int netdev_alert(const struct net_device *dev, const char *format, ...)
|
|
__attribute__ ((format (printf, 2, 3)));
|
|
extern int netdev_crit(const struct net_device *dev, const char *format, ...)
|
|
__attribute__ ((format (printf, 2, 3)));
|
|
extern int netdev_err(const struct net_device *dev, const char *format, ...)
|
|
__attribute__ ((format (printf, 2, 3)));
|
|
extern int netdev_warn(const struct net_device *dev, const char *format, ...)
|
|
__attribute__ ((format (printf, 2, 3)));
|
|
extern int netdev_notice(const struct net_device *dev, const char *format, ...)
|
|
__attribute__ ((format (printf, 2, 3)));
|
|
extern int netdev_info(const struct net_device *dev, const char *format, ...)
|
|
__attribute__ ((format (printf, 2, 3)));
|
|
|
|
#if defined(DEBUG)
|
|
#define netdev_dbg(__dev, format, args...) \
|
|
netdev_printk(KERN_DEBUG, __dev, format, ##args)
|
|
#elif defined(CONFIG_DYNAMIC_DEBUG)
|
|
#define netdev_dbg(__dev, format, args...) \
|
|
do { \
|
|
dynamic_dev_dbg((__dev)->dev.parent, "%s: " format, \
|
|
netdev_name(__dev), ##args); \
|
|
} while (0)
|
|
#else
|
|
#define netdev_dbg(__dev, format, args...) \
|
|
({ \
|
|
if (0) \
|
|
netdev_printk(KERN_DEBUG, __dev, format, ##args); \
|
|
0; \
|
|
})
|
|
#endif
|
|
|
|
#if defined(VERBOSE_DEBUG)
|
|
#define netdev_vdbg netdev_dbg
|
|
#else
|
|
|
|
#define netdev_vdbg(dev, format, args...) \
|
|
({ \
|
|
if (0) \
|
|
netdev_printk(KERN_DEBUG, dev, format, ##args); \
|
|
0; \
|
|
})
|
|
#endif
|
|
|
|
/*
|
|
* netdev_WARN() acts like dev_printk(), but with the key difference
|
|
* of using a WARN/WARN_ON to get the message out, including the
|
|
* file/line information and a backtrace.
|
|
*/
|
|
#define netdev_WARN(dev, format, args...) \
|
|
WARN(1, "netdevice: %s\n" format, netdev_name(dev), ##args);
|
|
|
|
/* netif printk helpers, similar to netdev_printk */
|
|
|
|
#define netif_printk(priv, type, level, dev, fmt, args...) \
|
|
do { \
|
|
if (netif_msg_##type(priv)) \
|
|
netdev_printk(level, (dev), fmt, ##args); \
|
|
} while (0)
|
|
|
|
#define netif_level(level, priv, type, dev, fmt, args...) \
|
|
do { \
|
|
if (netif_msg_##type(priv)) \
|
|
netdev_##level(dev, fmt, ##args); \
|
|
} while (0)
|
|
|
|
#define netif_emerg(priv, type, dev, fmt, args...) \
|
|
netif_level(emerg, priv, type, dev, fmt, ##args)
|
|
#define netif_alert(priv, type, dev, fmt, args...) \
|
|
netif_level(alert, priv, type, dev, fmt, ##args)
|
|
#define netif_crit(priv, type, dev, fmt, args...) \
|
|
netif_level(crit, priv, type, dev, fmt, ##args)
|
|
#define netif_err(priv, type, dev, fmt, args...) \
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netif_level(err, priv, type, dev, fmt, ##args)
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#define netif_warn(priv, type, dev, fmt, args...) \
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netif_level(warn, priv, type, dev, fmt, ##args)
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#define netif_notice(priv, type, dev, fmt, args...) \
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|
netif_level(notice, priv, type, dev, fmt, ##args)
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|
#define netif_info(priv, type, dev, fmt, args...) \
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|
netif_level(info, priv, type, dev, fmt, ##args)
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|
|
|
#if defined(DEBUG)
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|
#define netif_dbg(priv, type, dev, format, args...) \
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|
netif_printk(priv, type, KERN_DEBUG, dev, format, ##args)
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|
#elif defined(CONFIG_DYNAMIC_DEBUG)
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|
#define netif_dbg(priv, type, netdev, format, args...) \
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|
do { \
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|
if (netif_msg_##type(priv)) \
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|
dynamic_dev_dbg((netdev)->dev.parent, \
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|
"%s: " format, \
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|
netdev_name(netdev), ##args); \
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|
} while (0)
|
|
#else
|
|
#define netif_dbg(priv, type, dev, format, args...) \
|
|
({ \
|
|
if (0) \
|
|
netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \
|
|
0; \
|
|
})
|
|
#endif
|
|
|
|
#if defined(VERBOSE_DEBUG)
|
|
#define netif_vdbg netif_dbg
|
|
#else
|
|
#define netif_vdbg(priv, type, dev, format, args...) \
|
|
({ \
|
|
if (0) \
|
|
netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \
|
|
0; \
|
|
})
|
|
#endif
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* _LINUX_NETDEVICE_H */
|