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dsa: Change dsa_uses_{dsa, trailer}_tags() into inline functions 

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>
This commit is contained in:
Ben Hutchings 2011-11-25 14:32:52 +00:00 committed by David S. Miller
parent 6dec4ac4ee
commit cf50dcc24f
4 changed files with 52 additions and 59 deletions
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2
include/linux/netdevice.h
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@ -1080,7 +1080,7 @@ struct net_device {
struct vlan_group __rcu *vlgrp; /* VLAN group */
#endif
#ifdef CONFIG_NET_DSA
void *dsa_ptr; /* dsa specific data */
struct dsa_switch_tree *dsa_ptr; /* dsa specific data */
#endif
void *atalk_ptr; /* AppleTalk link */
struct in_device __rcu *ip_ptr; /* IPv4 specific data */

53
include/net/dsa.h
View File

@ -11,6 +11,9 @@
#ifndef __LINUX_NET_DSA_H
#define __LINUX_NET_DSA_H
#include <linux/timer.h>
#include <linux/workqueue.h>
#define DSA_MAX_SWITCHES 4
#define DSA_MAX_PORTS 12
@ -54,8 +57,54 @@ struct dsa_platform_data {
struct dsa_chip_data *chip;
};
extern bool dsa_uses_dsa_tags(void *dsa_ptr);
extern bool dsa_uses_trailer_tags(void *dsa_ptr);
struct dsa_switch_tree {
/*
* Configuration data for the platform device that owns
* this dsa switch tree instance.
*/
struct dsa_platform_data *pd;
/*
* Reference to network device to use, and which tagging
* protocol to use.
*/
struct net_device *master_netdev;
__be16 tag_protocol;
/*
* The switch and port to which the CPU is attached.
*/
s8 cpu_switch;
s8 cpu_port;
/*
* Link state polling.
*/
int link_poll_needed;
struct work_struct link_poll_work;
struct timer_list link_poll_timer;
/*
* Data for the individual switch chips.
*/
struct dsa_switch *ds[DSA_MAX_SWITCHES];
};
/*
* The original DSA tag format and some other tag formats have no
* ethertype, which means that we need to add a little hack to the
* networking receive path to make sure that received frames get
* the right ->protocol assigned to them when one of those tag
* formats is in use.
*/
static inline bool dsa_uses_dsa_tags(struct dsa_switch_tree *dst)
{
return !!(dst->tag_protocol == htons(ETH_P_DSA));
}
static inline bool dsa_uses_trailer_tags(struct dsa_switch_tree *dst)
{
return !!(dst->tag_protocol == htons(ETH_P_TRAILER));
}
#endif

23
net/dsa/dsa.c
View File

@ -199,29 +199,6 @@ static void dsa_switch_destroy(struct dsa_switch *ds)
}
/* hooks for ethertype-less tagging formats *********************************/
/*
* The original DSA tag format and some other tag formats have no
* ethertype, which means that we need to add a little hack to the
* networking receive path to make sure that received frames get
* the right ->protocol assigned to them when one of those tag
* formats is in use.
*/
bool dsa_uses_dsa_tags(void *dsa_ptr)
{
struct dsa_switch_tree *dst = dsa_ptr;
return !!(dst->tag_protocol == htons(ETH_P_DSA));
}
bool dsa_uses_trailer_tags(void *dsa_ptr)
{
struct dsa_switch_tree *dst = dsa_ptr;
return !!(dst->tag_protocol == htons(ETH_P_TRAILER));
}
/* link polling *************************************************************/
static void dsa_link_poll_work(struct work_struct *ugly)
{

33
net/dsa/dsa_priv.h
View File

@ -48,39 +48,6 @@ struct dsa_switch {
struct net_device *ports[DSA_MAX_PORTS];
};
struct dsa_switch_tree {
/*
* Configuration data for the platform device that owns
* this dsa switch tree instance.
*/
struct dsa_platform_data *pd;
/*
* Reference to network device to use, and which tagging
* protocol to use.
*/
struct net_device *master_netdev;
__be16 tag_protocol;
/*
* The switch and port to which the CPU is attached.
*/
s8 cpu_switch;
s8 cpu_port;
/*
* Link state polling.
*/
int link_poll_needed;
struct work_struct link_poll_work;
struct timer_list link_poll_timer;
/*
* Data for the individual switch chips.
*/
struct dsa_switch *ds[DSA_MAX_SWITCHES];
};
static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
{
return !!(ds->index == ds->dst->cpu_switch && p == ds->dst->cpu_port);