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author | Florian Fainelli <f.fainelli@gmail.com> | 2017-11-10 15:22:54 -0800 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2017-11-13 10:34:54 +0900 |
commit | b74b70c44986dee87881fbed3d912e02c5dcf78c (patch) | |
tree | c3d9d3d5577243c258d27153fdf114f1a7e73ba8 /net/dsa | |
parent | f7c39e3d1e094af1c3e0676b76c00d8c1f8e7774 (diff) | |
download | linux-stable-b74b70c44986dee87881fbed3d912e02c5dcf78c.tar.gz linux-stable-b74b70c44986dee87881fbed3d912e02c5dcf78c.tar.bz2 linux-stable-b74b70c44986dee87881fbed3d912e02c5dcf78c.zip |
net: dsa: Support prepended Broadcom tag
Add a new type: DSA_TAG_PROTO_PREPEND which allows us to support for the
4-bytes Broadcom tag that we already support, but in a format where it
is pre-pended to the packet instead of located between the MAC SA and
the Ethertyper (DSA_TAG_PROTO_BRCM).
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dsa')
-rw-r--r-- | net/dsa/Kconfig | 3 | ||||
-rw-r--r-- | net/dsa/Makefile | 1 | ||||
-rw-r--r-- | net/dsa/dsa.c | 3 | ||||
-rw-r--r-- | net/dsa/dsa_priv.h | 1 | ||||
-rw-r--r-- | net/dsa/tag_brcm.c | 39 |
5 files changed, 40 insertions, 7 deletions
diff --git a/net/dsa/Kconfig b/net/dsa/Kconfig index cc5f8f971689..2fed892094bc 100644 --- a/net/dsa/Kconfig +++ b/net/dsa/Kconfig @@ -19,6 +19,9 @@ if NET_DSA config NET_DSA_TAG_BRCM bool +config NET_DSA_TAG_BRCM_PREPEND + bool + config NET_DSA_TAG_DSA bool diff --git a/net/dsa/Makefile b/net/dsa/Makefile index e9a4a0f33e86..0e13c1f95d13 100644 --- a/net/dsa/Makefile +++ b/net/dsa/Makefile @@ -5,6 +5,7 @@ dsa_core-y += dsa.o dsa2.o legacy.o master.o port.o slave.o switch.o # tagging formats dsa_core-$(CONFIG_NET_DSA_TAG_BRCM) += tag_brcm.o +dsa_core-$(CONFIG_NET_DSA_TAG_BRCM_PREPEND) += tag_brcm.o dsa_core-$(CONFIG_NET_DSA_TAG_DSA) += tag_dsa.o dsa_core-$(CONFIG_NET_DSA_TAG_EDSA) += tag_edsa.o dsa_core-$(CONFIG_NET_DSA_TAG_KSZ) += tag_ksz.o diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c index b8f2d9f7c3ed..6a9d0f50fbee 100644 --- a/net/dsa/dsa.c +++ b/net/dsa/dsa.c @@ -44,6 +44,9 @@ const struct dsa_device_ops *dsa_device_ops[DSA_TAG_LAST] = { #ifdef CONFIG_NET_DSA_TAG_BRCM [DSA_TAG_PROTO_BRCM] = &brcm_netdev_ops, #endif +#ifdef CONFIG_NET_DSA_TAG_BRCM_PREPEND + [DSA_TAG_PROTO_BRCM_PREPEND] = &brcm_prepend_netdev_ops, +#endif #ifdef CONFIG_NET_DSA_TAG_DSA [DSA_TAG_PROTO_DSA] = &dsa_netdev_ops, #endif diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h index 507e1ce4d4d2..7d036696e8c4 100644 --- a/net/dsa/dsa_priv.h +++ b/net/dsa/dsa_priv.h @@ -191,6 +191,7 @@ void dsa_switch_unregister_notifier(struct dsa_switch *ds); /* tag_brcm.c */ extern const struct dsa_device_ops brcm_netdev_ops; +extern const struct dsa_device_ops brcm_prepend_netdev_ops; /* tag_dsa.c */ extern const struct dsa_device_ops dsa_netdev_ops; diff --git a/net/dsa/tag_brcm.c b/net/dsa/tag_brcm.c index 771409a1e65c..e6e0b7b6025c 100644 --- a/net/dsa/tag_brcm.c +++ b/net/dsa/tag_brcm.c @@ -96,13 +96,6 @@ static struct sk_buff *brcm_tag_xmit_ll(struct sk_buff *skb, return skb; } -static struct sk_buff *brcm_tag_xmit(struct sk_buff *skb, - struct net_device *dev) -{ - /* Build the tag after the MAC Source Address */ - return brcm_tag_xmit_ll(skb, dev, 2 * ETH_ALEN); -} - static struct sk_buff *brcm_tag_rcv_ll(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, @@ -139,6 +132,15 @@ static struct sk_buff *brcm_tag_rcv_ll(struct sk_buff *skb, return skb; } +#ifdef CONFIG_NET_DSA_TAG_BRCM +static struct sk_buff *brcm_tag_xmit(struct sk_buff *skb, + struct net_device *dev) +{ + /* Build the tag after the MAC Source Address */ + return brcm_tag_xmit_ll(skb, dev, 2 * ETH_ALEN); +} + + static struct sk_buff *brcm_tag_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt) { @@ -161,3 +163,26 @@ const struct dsa_device_ops brcm_netdev_ops = { .xmit = brcm_tag_xmit, .rcv = brcm_tag_rcv, }; +#endif + +#ifdef CONFIG_NET_DSA_TAG_BRCM_PREPEND +static struct sk_buff *brcm_tag_xmit_prepend(struct sk_buff *skb, + struct net_device *dev) +{ + /* tag is prepended to the packet */ + return brcm_tag_xmit_ll(skb, dev, 0); +} + +static struct sk_buff *brcm_tag_rcv_prepend(struct sk_buff *skb, + struct net_device *dev, + struct packet_type *pt) +{ + /* tag is prepended to the packet */ + return brcm_tag_rcv_ll(skb, dev, pt, ETH_HLEN); +} + +const struct dsa_device_ops brcm_prepend_netdev_ops = { + .xmit = brcm_tag_xmit_prepend, + .rcv = brcm_tag_rcv_prepend, +}; +#endif |