From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniele Palmas Subject: [PATCH 1/1] net: usb: cdc_mbim: add flag FLAG_SEND_ZLP Date: Thu, 31 May 2018 11:18:29 +0200 Message-ID: <1527758309-9614-1-git-send-email-dnlplm@gmail.com> Cc: netdev@vger.kernel.org, linux-usb@vger.kernel.org, Daniele Palmas To: =?UTF-8?q?Bj=C3=B8rn=20Mork?= , Oliver Neukum Return-path: Received: from mail-wr0-f193.google.com ([209.85.128.193]:39176 "EHLO mail-wr0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754093AbeEaJSn (ORCPT ); Thu, 31 May 2018 05:18:43 -0400 Sender: netdev-owner@vger.kernel.org List-ID: 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 --- drivers/net/usb/cdc_mbim.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/usb/cdc_mbim.c b/drivers/net/usb/cdc_mbim.c index 7220cd6..0362acd 100644 --- a/drivers/net/usb/cdc_mbim.c +++ b/drivers/net/usb/cdc_mbim.c @@ -609,7 +609,7 @@ static const struct driver_info cdc_mbim_info_ndp_to_end = { */ static const struct driver_info cdc_mbim_info_avoid_altsetting_toggle = { .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, -- 2.7.4