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cf50dcc24f
eth_type_trans() will use these functions if DSA is enabled, which blocks building DSA as a module. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
111 lines
2.7 KiB
C
111 lines
2.7 KiB
C
/*
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* include/net/dsa.h - Driver for Distributed Switch Architecture switch chips
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* Copyright (c) 2008-2009 Marvell Semiconductor
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __LINUX_NET_DSA_H
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#define __LINUX_NET_DSA_H
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#include <linux/timer.h>
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#include <linux/workqueue.h>
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#define DSA_MAX_SWITCHES 4
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#define DSA_MAX_PORTS 12
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struct dsa_chip_data {
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/*
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* How to access the switch configuration registers.
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*/
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struct device *mii_bus;
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int sw_addr;
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/*
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* The names of the switch's ports. Use "cpu" to
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* designate the switch port that the cpu is connected to,
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* "dsa" to indicate that this port is a DSA link to
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* another switch, NULL to indicate the port is unused,
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* or any other string to indicate this is a physical port.
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*/
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char *port_names[DSA_MAX_PORTS];
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/*
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* An array (with nr_chips elements) of which element [a]
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* indicates which port on this switch should be used to
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* send packets to that are destined for switch a. Can be
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* NULL if there is only one switch chip.
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*/
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s8 *rtable;
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};
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struct dsa_platform_data {
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/*
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* Reference to a Linux network interface that connects
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* to the root switch chip of the tree.
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*/
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struct device *netdev;
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/*
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* Info structs describing each of the switch chips
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* connected via this network interface.
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*/
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int nr_chips;
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struct dsa_chip_data *chip;
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};
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struct dsa_switch_tree {
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/*
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* Configuration data for the platform device that owns
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* this dsa switch tree instance.
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*/
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struct dsa_platform_data *pd;
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/*
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* Reference to network device to use, and which tagging
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* protocol to use.
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*/
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struct net_device *master_netdev;
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__be16 tag_protocol;
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/*
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* The switch and port to which the CPU is attached.
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*/
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s8 cpu_switch;
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s8 cpu_port;
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/*
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* Link state polling.
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*/
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int link_poll_needed;
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struct work_struct link_poll_work;
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struct timer_list link_poll_timer;
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/*
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* Data for the individual switch chips.
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*/
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struct dsa_switch *ds[DSA_MAX_SWITCHES];
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};
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/*
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* The original DSA tag format and some other tag formats have no
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* ethertype, which means that we need to add a little hack to the
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* networking receive path to make sure that received frames get
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* the right ->protocol assigned to them when one of those tag
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* formats is in use.
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*/
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static inline bool dsa_uses_dsa_tags(struct dsa_switch_tree *dst)
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{
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return !!(dst->tag_protocol == htons(ETH_P_DSA));
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}
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static inline bool dsa_uses_trailer_tags(struct dsa_switch_tree *dst)
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{
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return !!(dst->tag_protocol == htons(ETH_P_TRAILER));
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}
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#endif
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