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net: dsa: change tag_protocol to an enum 

Now that we introduced an additional multiplexing/demultiplexing layer
with commit 3e8a72d1da ("net: dsa: reduce number of protocol hooks")
that lives within the DSA code, we no longer need to have a given switch
driver tag_protocol be an actual ethertype value, instead, we can
replace it with an enum: dsa_tag_protocol.

Do this replacement in the drivers, which allows us to get rid of the
cpu_to_be16()/htons() dance, and remove ETH_P_BRCMTAG since we do not
need it anymore.

Suggested-by: Alexander Duyck <alexander.duyck@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2014-09-11 21:18:09 -07:00 committed by David S. Miller
parent c55542983e
commit ac7a04c33d
7 changed files with 19 additions and 17 deletions
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2
drivers/net/dsa/bcm_sf2.c
View File

@ -592,7 +592,7 @@ static void bcm_sf2_sw_fixed_link_update(struct dsa_switch *ds, int port,
}
static struct dsa_switch_driver bcm_sf2_switch_driver = {
.tag_protocol = htons(ETH_P_BRCMTAG),
.tag_protocol = DSA_TAG_PROTO_BRCM,
.priv_size = sizeof(struct bcm_sf2_priv),
.probe = bcm_sf2_sw_probe,
.setup = bcm_sf2_sw_setup,

2
drivers/net/dsa/mv88e6060.c
View File

@ -258,7 +258,7 @@ static void mv88e6060_poll_link(struct dsa_switch *ds)
}
static struct dsa_switch_driver mv88e6060_switch_driver = {
.tag_protocol = htons(ETH_P_TRAILER),
.tag_protocol = DSA_TAG_PROTO_TRAILER,
.probe = mv88e6060_probe,
.setup = mv88e6060_setup,
.set_addr = mv88e6060_set_addr,

4
drivers/net/dsa/mv88e6123_61_65.c
View File

@ -207,7 +207,7 @@ static int mv88e6123_61_65_setup_port(struct dsa_switch *ds, int p)
*/
val = 0x0433;
if (dsa_is_cpu_port(ds, p)) {
if (ds->dst->tag_protocol == htons(ETH_P_EDSA))
if (ds->dst->tag_protocol == DSA_TAG_PROTO_EDSA)
val |= 0x3300;
else
val |= 0x0100;
@ -391,7 +391,7 @@ static int mv88e6123_61_65_get_sset_count(struct dsa_switch *ds)
}
struct dsa_switch_driver mv88e6123_61_65_switch_driver = {
.tag_protocol = cpu_to_be16(ETH_P_EDSA),
.tag_protocol = DSA_TAG_PROTO_EDSA,
.priv_size = sizeof(struct mv88e6xxx_priv_state),
.probe = mv88e6123_61_65_probe,
.setup = mv88e6123_61_65_setup,

2
drivers/net/dsa/mv88e6131.c
View File

@ -379,7 +379,7 @@ static int mv88e6131_get_sset_count(struct dsa_switch *ds)
}
struct dsa_switch_driver mv88e6131_switch_driver = {
.tag_protocol = cpu_to_be16(ETH_P_DSA),
.tag_protocol = DSA_TAG_PROTO_DSA,
.priv_size = sizeof(struct mv88e6xxx_priv_state),
.probe = mv88e6131_probe,
.setup = mv88e6131_setup,

17
include/net/dsa.h
View File

@ -19,10 +19,13 @@
#include <linux/phy.h>
#include <linux/phy_fixed.h>
/* Not an official ethertype value, used only internally for DSA
* demultiplexing
*/
#define ETH_P_BRCMTAG (ETH_P_XDSA + 1)
enum dsa_tag_protocol {
DSA_TAG_PROTO_NONE = 0,
DSA_TAG_PROTO_DSA,
DSA_TAG_PROTO_TRAILER,
DSA_TAG_PROTO_EDSA,
DSA_TAG_PROTO_BRCM,
};
#define DSA_MAX_SWITCHES 4
#define DSA_MAX_PORTS 12
@ -89,7 +92,7 @@ struct dsa_switch_tree {
*/
struct net_device *master_netdev;
const struct dsa_device_ops *ops;
__be16 tag_protocol;
enum dsa_tag_protocol tag_protocol;
/*
* The switch and port to which the CPU is attached.
@ -166,7 +169,7 @@ static inline u8 dsa_upstream_port(struct dsa_switch *ds)
struct dsa_switch_driver {
struct list_head list;
__be16 tag_protocol;
enum dsa_tag_protocol tag_protocol;
int priv_size;
/*
@ -215,7 +218,7 @@ static inline void *ds_to_priv(struct dsa_switch *ds)
static inline bool dsa_uses_tagged_protocol(struct dsa_switch_tree *dst)
{
return dst->tag_protocol != 0;
return dst->tag_protocol != DSA_TAG_PROTO_NONE;
}
#endif

8
net/dsa/slave.c
View File

@ -437,22 +437,22 @@ dsa_slave_create(struct dsa_switch *ds, struct device *parent,
switch (ds->dst->tag_protocol) {
#ifdef CONFIG_NET_DSA_TAG_DSA
case htons(ETH_P_DSA):
case DSA_TAG_PROTO_DSA:
ds->dst->ops = &dsa_netdev_ops;
break;
#endif
#ifdef CONFIG_NET_DSA_TAG_EDSA
case htons(ETH_P_EDSA):
case DSA_TAG_PROTO_EDSA:
ds->dst->ops = &edsa_netdev_ops;
break;
#endif
#ifdef CONFIG_NET_DSA_TAG_TRAILER
case htons(ETH_P_TRAILER):
case DSA_TAG_PROTO_TRAILER:
ds->dst->ops = &trailer_netdev_ops;
break;
#endif
#ifdef CONFIG_NET_DSA_TAG_BRCM
case htons(ETH_P_BRCMTAG):
case DSA_TAG_PROTO_BRCM:
ds->dst->ops = &brcm_netdev_ops;
break;
#endif

1
net/dsa/tag_brcm.c
View File

@ -91,7 +91,6 @@ static netdev_tx_t brcm_tag_xmit(struct sk_buff *skb, struct net_device *dev)
/* Queue the SKB for transmission on the parent interface, but
* do not modify its EtherType
*/
skb->protocol = htons(ETH_P_BRCMTAG);
skb->dev = p->parent->dst->master_netdev;
dev_queue_xmit(skb);