net: dsa: add Broadcom tag RX/TX handler
Add support for the 4-bytes Broadcom tag that built-in switches such as the Starfighter 2 might insert when receiving packets, or that we need to insert while targetting specific switch ports. We use a fake local EtherType value for this 4-bytes switch tag: ETH_P_BRCMTAG to make sure we can assign DSA-specific network operations within the DSA drivers. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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David S. Miller

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ce31b31c68
commit
5037d532b8
@@ -19,6 +19,11 @@
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#include <linux/phy.h>
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#include <linux/phy_fixed.h>
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/* Not an official ethertype value, used only internally for DSA
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* demultiplexing
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*/
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#define ETH_P_BRCMTAG (ETH_P_XDSA + 1)
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#define DSA_MAX_SWITCHES 4
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#define DSA_MAX_PORTS 12
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