[RFC PATCH v7 07/16] net: dsa: tag_qca: add define for handling MIB packet

Ansuel Smith
2022-01-23T01:34:21Z

Add struct to correctly parse a mib Ethernet packet.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
---
include/linux/dsa/tag_qca.h | 10 ++++++++++
net/dsa/tag_qca.c | 4 ++++
2 files changed, 14 insertions(+)

diff --git a/include/linux/dsa/tag_qca.h b/include/linux/dsa/tag_qca.h
index 1a02f695f3a3..87dd84e31304 100644
--- a/include/linux/dsa/tag_qca.h
+++ b/include/linux/dsa/tag_qca.h
@@ -62,4 +62,14 @@ struct mgmt_ethhdr {
__be16 hdr; /* qca hdr */
} __packed;

+enum mdio_cmd {
+ MDIO_WRITE = 0x0,
+ MDIO_READ
+};
+
+struct mib_ethhdr {
+ u32 data[3]; /* first 3 mib counter */
+ __be16 hdr; /* qca hdr */
+} __packed;
+
#endif /* __TAG_QCA_H */
diff --git a/net/dsa/tag_qca.c b/net/dsa/tag_qca.c
index c57d6e1a0c0c..fdaa1b322d25 100644
--- a/net/dsa/tag_qca.c
+++ b/net/dsa/tag_qca.c
@@ -55,6 +55,10 @@ static struct sk_buff *qca_tag_rcv(struct sk_buff *skb, struct net_device *dev)
if (pk_type == QCA_HDR_RECV_TYPE_RW_REG_ACK)
return NULL;

+ /* Ethernet MIB counter packet */
+ if (pk_type == QCA_HDR_RECV_TYPE_MIB)
+ return NULL;
+
/* Remove QCA tag and recalculate checksum */
skb_pull_rcsum(skb, QCA_HDR_LEN);
dsa_strip_etype_header(skb, QCA_HDR_LEN);
--
2.33.1