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authorLennert Buytenhek <buytenh@wantstofly.org>2008-10-07 13:46:07 +0000
committerDavid S. Miller <davem@davemloft.net>2008-10-08 17:24:16 -0700
commit396138f03f4521c55ecc3a5dd75d4c56e6323244 (patch)
tree61dc43e540c861a4b05753da56a9fe2a19bea206 /include/linux
parent2e5f032095ff101274dfb03d5fd5e06d9aeb83cd (diff)
dsa: add support for Trailer tagging format
This adds support for the Trailer switch tagging format. This is another tagging that doesn't explicitly mark tagged packets with a distinct ethertype, so that we need to add a similar hack in the receive path as for the Original DSA tagging format. Signed-off-by: Lennert Buytenhek <buytenh@marvell.com> Tested-by: Byron Bradley <byron.bbradley@gmail.com> Tested-by: Tim Ellis <tim.ellis@mac.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/if_ether.h1
-rw-r--r--include/linux/netdevice.h10
2 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/if_ether.h b/include/linux/if_ether.h
index 32b9dcda68c..a0099e98b5c 100644
--- a/include/linux/if_ether.h
+++ b/include/linux/if_ether.h
@@ -102,6 +102,7 @@
#define ETH_P_HDLC 0x0019 /* HDLC frames */
#define ETH_P_ARCNET 0x001A /* 1A for ArcNet :-) */
#define ETH_P_DSA 0x001B /* Distributed Switch Arch. */
+#define ETH_P_TRAILER 0x001C /* Trailer switch tagging */
#define ETH_P_PHONET 0x00F5 /* Nokia Phonet frames */
/*
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 97f0c64c152..d3ea3de70a8 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -812,6 +812,16 @@ static inline bool netdev_uses_dsa_tags(struct net_device *dev)
return 0;
}
+static inline bool netdev_uses_trailer_tags(struct net_device *dev)
+{
+#ifdef CONFIG_NET_DSA_TAG_TRAILER
+ if (dev->dsa_ptr != NULL)
+ return dsa_uses_trailer_tags(dev->dsa_ptr);
+#endif
+
+ return 0;
+}
+
/**
* netdev_priv - access network device private data
* @dev: network device