UDP GSO packets from network stack currently do not honor the
gso_max_size limits set in a driver. As a result, there needs
to be some enforcement done at the driver itself prior to the
transmit to hardware.
Instead of setting the gso_max_size on the rmnet devices, the
gso_max_size is instead set on the physical device. This
ensures that the network stack processing happens with the
maximum gso size possible for the TCP case.
CRs-Fixed: 2981039
Change-Id: I5280ea79f868e2b933f2604f8a33fbf33687f76c
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Add strings to display the cumulative result of the segmentation of
TSO packets on LL channel per rmnet device
CRs-Fixed: 2982506
Change-Id: I2454080d89c7a39a67004e0143463cd35772d45c
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
ULSO is not supported on the LL endpoint. If such skbs are received by the
rmnet driver, they must be segmented in software before transmitting them.
Change-Id: I0103d06c6bfa8eb96cfbde85f68b1b45034a93e5
Signed-off-by: Sean Tranchetti <stranche@codeaurora.org>
Add support to switch bearers between default and lower latency
channels via QMAP commands.
Change-Id: I6662f59c713e8e3ab7409f50871bec11d9908c67
Acked-by: Weiyi Chen <weiyic@qti.qualcomm.com>
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
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>
Define the hooks to be used be perf tether ingress and egress.
CRs-Fixed: 2813607
Change-Id: I68c4cc1e73c60e784fd4117679b3a373d29f539c
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
This adds support for the new transmit offload header as well as
the handling needed for it in the core driver.
CRs-Fixed: 2810638
Change-Id: I8ce2e0772209faf3d585e7d9d8d56eceb695d586
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Add watchdog timer to recover potential data stall when data is
not going to the expected DRB and no DFC indication is received.
Change-Id: Iaa4b4814967cf9400c36115a083922376d23928d
Acked-by: Weiyi Chen <weiyic@qti.qualcomm.com>
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
This patch adds trace events to help with debug for gso feature
by identifying the packets (and their lengths) that are using
the segmentation offload feature.
Adding source and destination port number info
in the gso trace events to differentiate between
the flows.
CRs-Fixed: 2697145
Change-Id: I4f9786afa799cb1589bd07393c0922913037390d
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Allows calculation of the average buffer utilization for RSB/RSC packets.
Change-Id: Id719b97ceffc62b1b9ce28bfab8ec32c6604529c
Acked-by: Conner Huff <chuff@codeaurora.org>
Signed-off-by: Sean Tranchetti <stranche@codeaurora.org>
This brings the RmNet and DFC modules up to date with the 4.19 tip as of
commit 9b38611ea527 ("rmnet: Reduce synchronize_rcu calls").
As part of this, the rmnet_ctl driver was also incorporated, using commit
4ceee3aafb7d ("rmnet_ctl: Add IPC logging and optimizations")
Change-Id: Ic45d46074c7401dfed408c769cfb6462dac0d4ee
Signed-off-by: Sean Tranchetti <stranche@codeaurora.org>
Inital commit of rmnet_core net device driver in dlkm form
in datarmnet. This requires rmnet to be disabled in the
kernel and for it to be loaded before dependent modules.
CRs-Fixed: 2558810
Change-Id: I742e85033fa0999bf9069d43ce73ab9a622a8388
Acked-by: Raul Martinez <mraul@qti.qualcomm.com>
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
