b38dff7d79
Packets are now sent over a dedicated MHI channel when indicated by the DFC driver. New dedicated channel is controlled by rmnet driver. Buffers are allocated and supplied to it as needed from a recyclable pool for RX on the channel, and packets will be sent to it and freed manually once the channel indicates that they have been sent. Low latency packets can be aggregated like standard QMAP packets, but have their own aggregation state to prevent mixing default and low latency flows, and to allow each type of flow to use their own send functions (i.e. dev_queue_xmit() versus rmnet_ll_send_skb()). Low latency packets also have their own load-balancing scheme, and do not need to use the SHS module for balancing. To facilitate this, we mark the low latency packets with a non-zero priority value upon receipt from the MHI chainnel and avoid sending any such marked packets to the SHS ingress hook. DFC has been updated with a new netlink message type to handle swapping a list of bearers from one channel to another. The actual swap is performed asynchronously, and separate netlink ACKs will be sent to the userspace socket when the switch has been completed. Change-Id: I93861d4b004f399ba203d76a71b2f01fa5c0d5d2 Signed-off-by: Sean Tranchetti <stranche@codeaurora.org>