cf85d08fdf
Most of the DSA switches currently in the field do not support the Ethertype DSA tagging format that one of the previous patches added support for, but only the original DSA tagging format. The original DSA tagging format carries the same information as the Ethertype DSA tagging format, but with the difference that it does not have an ethertype field. In other words, when receiving a packet that is tagged with an original DSA tag, there is no way of telling in eth_type_trans() that this packet is in fact a DSA-tagged packet. This patch adds a hook into eth_type_trans() which is only compiled in if support for a switch chip that doesn't support Ethertype DSA is selected, and which checks whether there is a DSA switch driver instance attached to this network device which uses the old tag format. If so, it sets the protocol field to ETH_P_DSA without looking at the packet, so that the packet ends up in the right place. Signed-off-by: Lennert Buytenhek <buytenh@marvell.com> Tested-by: Nicolas Pitre <nico@marvell.com> Tested-by: Peter van Valderen <linux@ddcrew.com> Tested-by: Dirk Teurlings <dirk@upexia.nl> Signed-off-by: David S. Miller <davem@davemloft.net>
113 lines
2.6 KiB
C
113 lines
2.6 KiB
C
/*
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* net/dsa/dsa_priv.h - Hardware switch handling
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* Copyright (c) 2008 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 __DSA_PRIV_H
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#define __DSA_PRIV_H
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#include <linux/list.h>
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#include <linux/phy.h>
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#include <linux/timer.h>
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#include <linux/workqueue.h>
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#include <net/dsa.h>
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struct dsa_switch {
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/*
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* Configuration data for the platform device that owns
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* this dsa switch instance.
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*/
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struct dsa_platform_data *pd;
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/*
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* References to network device and mii bus to use.
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*/
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struct net_device *master_netdev;
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struct mii_bus *master_mii_bus;
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/*
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* The used switch driver and frame tagging type.
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*/
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struct dsa_switch_driver *drv;
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__be16 tag_protocol;
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/*
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* Slave mii_bus and devices for the individual ports.
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*/
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int cpu_port;
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u32 valid_port_mask;
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struct mii_bus *slave_mii_bus;
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struct net_device *ports[DSA_MAX_PORTS];
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/*
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* Link state polling.
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*/
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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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struct dsa_slave_priv {
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struct net_device *dev;
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struct dsa_switch *parent;
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int port;
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struct phy_device *phy;
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};
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struct dsa_switch_driver {
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struct list_head list;
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__be16 tag_protocol;
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int priv_size;
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/*
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* Probing and setup.
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*/
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char *(*probe)(struct mii_bus *bus, int sw_addr);
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int (*setup)(struct dsa_switch *ds);
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int (*set_addr)(struct dsa_switch *ds, u8 *addr);
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/*
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* Access to the switch's PHY registers.
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*/
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int (*phy_read)(struct dsa_switch *ds, int port, int regnum);
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int (*phy_write)(struct dsa_switch *ds, int port,
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int regnum, u16 val);
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/*
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* Link state polling and IRQ handling.
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*/
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void (*poll_link)(struct dsa_switch *ds);
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/*
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* ethtool hardware statistics.
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*/
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void (*get_strings)(struct dsa_switch *ds, int port, uint8_t *data);
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void (*get_ethtool_stats)(struct dsa_switch *ds,
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int port, uint64_t *data);
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int (*get_sset_count)(struct dsa_switch *ds);
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};
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/* dsa.c */
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extern char dsa_driver_version[];
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void register_switch_driver(struct dsa_switch_driver *type);
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void unregister_switch_driver(struct dsa_switch_driver *type);
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/* slave.c */
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void dsa_slave_mii_bus_init(struct dsa_switch *ds);
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struct net_device *dsa_slave_create(struct dsa_switch *ds,
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struct device *parent,
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int port, char *name);
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/* tag_dsa.c */
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int dsa_xmit(struct sk_buff *skb, struct net_device *dev);
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/* tag_edsa.c */
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int edsa_xmit(struct sk_buff *skb, struct net_device *dev);
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#endif
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