diff options
| author | Vijayavardhan Vennapusa <vvreddy@codeaurora.org> | 2017-10-10 11:50:18 +0530 |
|---|---|---|
| committer | Vijayavardhan Vennapusa <vvreddy@codeaurora.org> | 2017-10-10 11:51:54 +0530 |
| commit | e2ed5d95d208ff1febae9cc817858ca18ad691d2 (patch) | |
| tree | 17acbedb4624bcddf8a084a891559d7dfdc13c0c /drivers | |
| parent | 8aedd7084222d4cce3acdfe3c71820c674503bee (diff) | |
USB: rndis: Honor dl_max_packet_size value sent by host
This change starts using dl_max_packet_size value sent by host
as part of USB RNDIS init message communication. Using default
dl_max_packet_size value results into low throughput with more
data loss on host side as host side RNDIS can't support
de-aggregation (applicable for Linux Host RNDIS driver) or it
ignores received more data then host side RNDIS can handle. To
use fine tune dl_max_packet_size for better throughput, driver
selects minimum value between host supported dl_max_packet_size
and default size (i.e. 9216 bytes as RNDIS IN aggregation size).
Change-Id: I00c81bc905a032867c537536b01bf32584c37e63
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/gadget/function/f_gsi.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/usb/gadget/function/f_gsi.c b/drivers/usb/gadget/function/f_gsi.c index 19fe6c8cb25a..49f29fcb2aff 100644 --- a/drivers/usb/gadget/function/f_gsi.c +++ b/drivers/usb/gadget/function/f_gsi.c @@ -1577,6 +1577,7 @@ static void gsi_rndis_command_complete(struct usb_ep *ep, struct usb_request *req) { struct f_gsi *rndis = req->context; + rndis_init_msg_type *buf; int status; if (req->status != 0) { @@ -1589,6 +1590,16 @@ static void gsi_rndis_command_complete(struct usb_ep *ep, if (status < 0) log_event_err("RNDIS command error %d, %d/%d", status, req->actual, req->length); + + buf = (rndis_init_msg_type *)req->buf; + if (buf->MessageType == RNDIS_MSG_INIT) { + rndis->d_port.in_aggr_size = min_t(u32, + rndis->d_port.in_aggr_size, + rndis->params->dl_max_xfer_size); + log_event_dbg("RNDIS host dl_aggr_size:%d in_aggr_size:%d\n", + rndis->params->dl_max_xfer_size, + rndis->d_port.in_aggr_size); + } } static void |