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uqmi: fix raw-ip mode for newer lte modems

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Some newer LTE modems, like the MC7455 or EC25-E do not support
"802.3" mode, and will stay in "raw-ip" regardless of the mode being
set.

In this case, the driver must be informed that it should handle all
packets in raw mode. [1]

This commit fixes connectivity issues for these devices.

Before:

[ Node 5 ] udhcpc -i wwan0
udhcpc: started, v1.27.2
udhcpc: sending discover
udhcpc: sending discover
udhcpc: sending discover

After:

[ Node 5 ] udhcpc -i wwan0
udhcpc: started, v1.27.2
udhcpc: sending discover
udhcpc: sending select for 100.66.245.226
udhcpc: lease of 100.66.245.226 obtained, lease time 7200
udhcpc: ifconfig wwan0 100.66.245.226 netmask 255.255.255.252 broadcast
+
udhcpc: setting default routers: 100.66.245.225

[1] https://lists.freedesktop.org/archives/libqmi-
devel/2017-January/002064.html

Tested on cns3xxx using a Sierra Wireless MC7455 LTE-A

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
[bumped PKG_RELEASE]
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
This commit is contained in:
Koen Vandeputte 2017-11-27 18:31:30 +01:00 committed by Jo-Philipp Wich
parent 030176e0e7
commit 7488be7010
2 changed files with 15 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
package/network/utils/uqmi/Makefile
View file

@ -1,7 +1,7 @@
include $(TOPDIR)/rules.mk
PKG_NAME:=uqmi
PKG_RELEASE:=1
PKG_RELEASE:=2
PKG_SOURCE_PROTO:=git
PKG_SOURCE_URL=$(PROJECT_GIT)/project/uqmi.git

15
package/network/utils/uqmi/files/lib/netifd/proto/qmi.sh
View file

@ -27,7 +27,7 @@ proto_qmi_init_config() {
proto_qmi_setup() {
local interface="$1"
local dataformat
local device apn auth username password pincode delay modes pdptype profile dhcpv6 autoconnect plmn $PROTO_DEFAULT_OPTIONS
local cid_4 pdh_4 cid_6 pdh_6
local ip_6 ip_prefix_length gateway_6 dns1_6 dns2_6
@ -99,6 +99,19 @@ proto_qmi_setup() {
uqmi -s -d "$device" --set-data-format 802.3
uqmi -s -d "$device" --wda-set-data-format 802.3
dataformat="$(uqmi -s -d "$device" --wda-get-data-format)"
if [ "$dataformat" = '"raw-ip"' ]; then
[ -f /sys/class/net/$ifname/qmi/raw_ip ] || {
echo "Device only supports raw-ip mode but is missing this required driver attribute: /sys/class/net/$ifname/qmi/raw_ip"
return 1
}
echo "Device does not support 802.3 mode. Informing driver of raw-ip only for $ifname .."
echo "Y" > /sys/class/net/$ifname/qmi/raw_ip
fi
uqmi -s -d "$device" --sync
echo "Waiting for network registration"