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authorVladimir Oltean <olteanv@gmail.com>2019-05-05 13:19:27 +0300
committerDavid S. Miller <davem@davemloft.net>2019-05-05 21:52:42 -0700
commit227d07a07ef126272ea2eed97fd136cd7a803d81 (patch)
treed5004e1438e81abf29266b349005ae3a945f7e72 /include/net
parentc362beb072e14b929eb657dc174d83ccdd9b0eed (diff)
net: dsa: sja1105: Add support for traffic through standalone ports
In order to support this, we are creating a make-shift switch tag out of a VLAN trunk configured on the CPU port. Termination of normal traffic on switch ports only works when not under a vlan_filtering bridge. Termination of management (PTP, BPDU) traffic works under all circumstances because it uses a different tagging mechanism (incl_srcpt). We are making use of the generic CONFIG_NET_DSA_TAG_8021Q code and leveraging it from our own CONFIG_NET_DSA_TAG_SJA1105. There are two types of traffic: regular and link-local. The link-local traffic received on the CPU port is trapped from the switch's regular forwarding decisions because it matched one of the two DMAC filters for management traffic. On transmission, the switch requires special massaging for these link-local frames. Due to a weird implementation of the switching IP, by default it drops link-local frames that originate on the CPU port. It needs to be told where to forward them to, through an SPI command ("management route") that is valid for only a single frame. So when we're sending link-local traffic, we are using the dsa_defer_xmit mechanism. Signed-off-by: Vladimir Oltean <olteanv@gmail.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/dsa.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/net/dsa.h b/include/net/dsa.h
index e20be1ceb306..6aaaadd6a413 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -43,6 +43,7 @@ struct phylink_link_state;
#define DSA_TAG_PROTO_QCA_VALUE 10
#define DSA_TAG_PROTO_TRAILER_VALUE 11
#define DSA_TAG_PROTO_8021Q_VALUE 12
+#define DSA_TAG_PROTO_SJA1105_VALUE 13
enum dsa_tag_protocol {
DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE,
@@ -58,6 +59,7 @@ enum dsa_tag_protocol {
DSA_TAG_PROTO_QCA = DSA_TAG_PROTO_QCA_VALUE,
DSA_TAG_PROTO_TRAILER = DSA_TAG_PROTO_TRAILER_VALUE,
DSA_TAG_PROTO_8021Q = DSA_TAG_PROTO_8021Q_VALUE,
+ DSA_TAG_PROTO_SJA1105 = DSA_TAG_PROTO_SJA1105_VALUE,
};
struct packet_type;