diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/usb/mctp-usb.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/include/linux/usb/mctp-usb.h b/include/linux/usb/mctp-usb.h index 595e6af16dd0..76f9d8879254 100644 --- a/include/linux/usb/mctp-usb.h +++ b/include/linux/usb/mctp-usb.h @@ -55,4 +55,43 @@ int mctp_usblib_rx_complete(struct net_device *netdev, void mctp_usblib_rx_cancel(struct mctp_usblib_rx *rx); +/* + * TX handle: created by mctp_usblib_tx_push() during the tx path, and + * may persist across multiple packet transmits. + * + * Currently though, there is a 1:1 mapping between packets and transfers, so + * the tx context will be cleared over each transmit. This will change in + * future. + */ +struct mctp_usblib_tx_ctx; + +struct mctp_usblib_tx_ops { + /* Start a USB TX for @data. On returning success, the implementation + * must arrange for mctp_usblib_tx_send_complete() to be called at some + * later point (eg., on urb completion). + */ + int (*send)(struct mctp_usblib_tx_ctx *tx_ctx, void *data, size_t len); +}; + +struct mctp_usblib_tx { + struct mctp_usblib_tx_ops ops; + void *priv; +}; + +void mctp_usblib_tx_init(struct mctp_usblib_tx *tx, + const struct mctp_usblib_tx_ops *ops, void *priv); +void mctp_usblib_tx_fini(struct mctp_usblib_tx *tx); + +void *mctp_usblib_tx_ctx_priv(struct mctp_usblib_tx_ctx *tx_ctx); + +int mctp_usblib_tx_push(struct net_device *dev, + struct mctp_usblib_tx *tx, + struct sk_buff *skb, bool more); + +void mctp_usblib_tx_send_complete(struct mctp_usblib_tx_ctx *tx_ctx, + struct net_device *dev, bool ok); + +void mctp_usblib_tx_cancel(struct mctp_usblib_tx *tx, struct net_device *dev, + enum skb_drop_reason reason); + #endif /* __LINUX_USB_MCTP_USB_H */ |