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net: usb: cdc_mbim: add flag FLAG_SEND_ZLP

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[ Upstream commit 9f7c728332e8966084242fcd951aa46583bc308c ]

Testing Telit LM940 with ICMP packets > 14552 bytes revealed that
the modem needs FLAG_SEND_ZLP to properly work, otherwise the cdc
mbim data interface won't be anymore responsive.

Signed-off-by: Daniele Palmas <dnlplm@gmail.com>
Acked-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Daniele Palmas 2018-05-31 11:18:29 +02:00 • committed by Greg Kroah-Hartman
parent 2f59e1e852
commit 163258f23a
1 changed files with 1 additions and 1 deletions
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2
drivers/net/usb/cdc_mbim.c
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@ -593,7 +593,7 @@ static const struct driver_info cdc_mbim_info_zlp = {
*/
static const struct driver_info cdc_mbim_info_ndp_to_end = {
.description = "CDC MBIM",
.flags = FLAG_NO_SETINT | FLAG_MULTI_PACKET | FLAG_WWAN,
.flags = FLAG_NO_SETINT | FLAG_MULTI_PACKET | FLAG_WWAN | FLAG_SEND_ZLP,
.bind = cdc_mbim_bind,
.unbind = cdc_mbim_unbind,
.manage_power = cdc_mbim_manage_power,