net/ncsi: NCSI command packet handler
The NCSI command packets are sent from MC (Management Controller)
to remote end. They are used for multiple purposes: probe existing
NCSI package/channel, retrieve NCSI channel's capability, configure
NCSI channel etc.
This defines struct to represent NCSI command packets and introduces
function ncsi_xmit_cmd(), which will be used to transmit NCSI command
packet according to the request. The request is represented by struct
ncsi_cmd_arg.
Signed-off-by: Gavin Shan <[email protected]>
Acked-by: Joel Stanley <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
diff --git a/net/ncsi/internal.h b/net/ncsi/internal.h
index 89028e1..3d81697 100644
--- a/net/ncsi/internal.h
+++ b/net/ncsi/internal.h
@@ -220,6 +220,21 @@
struct list_head node; /* Form NCSI device list */
};
+struct ncsi_cmd_arg {
+ struct ncsi_dev_priv *ndp; /* Associated NCSI device */
+ unsigned char type; /* Command in the NCSI packet */
+ unsigned char id; /* Request ID (sequence number) */
+ unsigned char package; /* Destination package ID */
+ unsigned char channel; /* Detination channel ID or 0x1f */
+ unsigned short payload; /* Command packet payload length */
+ bool driven; /* Drive the state machine? */
+ union {
+ unsigned char bytes[16]; /* Command packet specific data */
+ unsigned short words[8];
+ unsigned int dwords[4];
+ };
+};
+
extern struct list_head ncsi_dev_list;
extern spinlock_t ncsi_dev_lock;
@@ -253,4 +268,8 @@
void ncsi_free_request(struct ncsi_request *nr);
struct ncsi_dev *ncsi_find_dev(struct net_device *dev);
+/* Packet handlers */
+u32 ncsi_calculate_checksum(unsigned char *data, int len);
+int ncsi_xmit_cmd(struct ncsi_cmd_arg *nca);
+
#endif /* __NCSI_INTERNAL_H__ */
