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Date: Thu, 11 Sep 2014 21:18:09 -0700
From: Florian Fainelli <f.fainelli@...il.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, kernel@...tstofly.org,
alexander.duyck@...il.com, Florian Fainelli <f.fainelli@...il.com>
Subject: [PATCH net-next v2] net: dsa: change tag_protocol to an enum
Now that we introduced an additional multiplexing/demultiplexing layer
with commit 3e8a72d1dae37 ("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@...il.com>
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
Changes in v2:
- removed now obsolete comment about the former ETH_P_BRCMTAG we did
introduce earlier
drivers/net/dsa/bcm_sf2.c | 2 +-
drivers/net/dsa/mv88e6060.c | 2 +-
drivers/net/dsa/mv88e6123_61_65.c | 4 ++--
drivers/net/dsa/mv88e6131.c | 2 +-
include/net/dsa.h | 17 ++++++++++-------
net/dsa/slave.c | 8 ++++----
net/dsa/tag_brcm.c | 1 -
7 files changed, 19 insertions(+), 17 deletions(-)
diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
index bb7cb8e..e9918c7 100644
--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -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,
diff --git a/drivers/net/dsa/mv88e6060.c b/drivers/net/dsa/mv88e6060.c
index 7a54ec0..d8037c1 100644
--- a/drivers/net/dsa/mv88e6060.c
+++ b/drivers/net/dsa/mv88e6060.c
@@ -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,
diff --git a/drivers/net/dsa/mv88e6123_61_65.c b/drivers/net/dsa/mv88e6123_61_65.c
index 69c4251..975774f 100644
--- a/drivers/net/dsa/mv88e6123_61_65.c
+++ b/drivers/net/dsa/mv88e6123_61_65.c
@@ -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,
diff --git a/drivers/net/dsa/mv88e6131.c b/drivers/net/dsa/mv88e6131.c
index 953bc6a..35541f2 100644
--- a/drivers/net/dsa/mv88e6131.c
+++ b/drivers/net/dsa/mv88e6131.c
@@ -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,
diff --git a/include/net/dsa.h b/include/net/dsa.h
index 9771292..8a8a5d9 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -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
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 7333a4a..809eeb1 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -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
diff --git a/net/dsa/tag_brcm.c b/net/dsa/tag_brcm.c
index e0b759e..8fbc21c 100644
--- a/net/dsa/tag_brcm.c
+++ b/net/dsa/tag_brcm.c
@@ -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);
--
1.9.1
--
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