Dear USB developers,
Based on my google research, the problem I experience seems to happen
with some newer smartphones. My test case is Samsung Galaxy S8 (SM-950U1). I am
trying to use USB tethering and everything seems to work as expected (modules
are loaded, Ethernet devices are up and running, dhcp works fine). I can connect to
the external world using both LTE or wireless network on the phone.
Now, the problem is that the download speeds are terrible, around 64 KB/s,
while uploads are fast, the order of 15 MB/s. These speeds do not depend
on the wireless service provider: the results are similar when I tether wi-fi.
The USB Ethernet interface on the Linux host reports a lot of receive errors (attached:
device_state.txt), while kernel reports bad rndis messages (attached: kernel.log.txt).
Windows 10 works great with the same hardware (same PC and same phone), with
uploads and downloads in the order of 150 Mbit/s, which is probably as fast as my
wireless network can do. But some people reported issues with older Windows drivers too.
Is possible that some newer version of RNDIS protocol is around and Linux hasn't updated
its RNDIS module yet?
Best,
Tomasz
[77979.936526] usb 3-9: new high-speed USB device number 7 using xhci_hcd
[77980.089137] usb 3-9: New USB device found, idVendor=04e8, idProduct=6860
[77980.089143] usb 3-9: New USB device strings: Mfr=7, Product=8, SerialNumber=9
[77980.089146] usb 3-9: Product: SAMSUNG_Android
[77980.089148] usb 3-9: Manufacturer: SAMSUNG
[77980.089151] usb 3-9: SerialNumber: 98882945364a434f46
[78019.597479] usb 3-9: USB disconnect, device number 7
[78020.037162] usb 3-9: new high-speed USB device number 8 using xhci_hcd
[78020.187529] usb 3-9: New USB device found, idVendor=04e8, idProduct=6863
[78020.187534] usb 3-9: New USB device strings: Mfr=7, Product=8, SerialNumber=9
[78020.187537] usb 3-9: Product: SAMSUNG_Android
[78020.187539] usb 3-9: Manufacturer: SAMSUNG
[78020.187542] usb 3-9: SerialNumber: 98882945364a434f46
[78020.191979] rndis_host 3-9:1.0 usb0: register 'rndis_host' at usb-0000:00:14.0-9, RNDIS device, 82:70:61:5c:9d:4f
[78020.238719] rndis_host 3-9:1.0 enp0s20u9: renamed from usb0
[78213.555001] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78213.555027] rndis_host 3-9:1.0 enp0s20u9: bad rndis message -2013127152/-84731529/-93394684/315651350, len 548
[78213.555035] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78213.555243] rndis_host 3-9:1.0 enp0s20u9: bad rndis message -910707548/1362693399/1098054912/-1158698644, len 2048
[78213.555254] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 453773253/1322224416/1773410520/1734735583, len 2048
[78213.555258] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1847997430/-1292764570/-1075768035/-1173448098, len 1644
[78213.580893] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78213.580928] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1374746855/1872717209/1627961749/1446196293, len 2048
[78213.581007] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 2014317876/-1802985385/1741271276/985318156, len 2048
[78213.581272] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 315472595/1240463481/1199472260/-1304836767, len 346
[78213.606421] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78213.606700] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1971266818/603214195/-1554415893/513330975, len 548
[78213.678067] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78213.678094] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1971266818/603214195/-1554415893/513330975, len 548
[78213.755151] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78213.755178] rndis_host 3-9:1.0 enp0s20u9: bad rndis message -960915119/-1414823780/-1725858181/-1936328995, len 548
[78213.781899] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78213.782511] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 484952970/955066952/-390686949/1110830164, len 548
[78213.832185] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78213.832375] rndis_host 3-9:1.0 enp0s20u9: bad rndis message -289948698/1791367026/1725404901/949556424, len 2048
[78213.832383] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 2071042143/-2017854031/-1092884323/1270254088, len 2048
[78213.832405] rndis_host 3-9:1.0 enp0s20u9: bad rndis message -1454388581/-113380006/-2064914356/-1946942086, len 346
[78213.832412] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78213.833306] rndis_host 3-9:1.0 enp0s20u9: bad rndis message -26919620/597103012/-1245814449/-1439889729, len 548
[78213.858455] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78213.858651] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 484952970/955066952/-390686949/1110830164, len 548
[78213.958295] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78213.958320] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 2084747672/-1159076936/-1149113043/-1678125283, len 548
[78213.982941] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78213.983693] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 2102180585/730447672/-1110358447/1834872825, len 548
[78214.031769] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78214.031793] rndis_host 3-9:1.0 enp0s20u9: bad rndis message -1246805200/-557540988/-550708953/333388587, len 2048
[78214.032540] rndis_host 3-9:1.0 enp0s20u9: bad rndis message -1124897987/-1560016508/601048935/912680915, len 1096
[78214.103210] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78214.103823] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 103489251/430730633/-2041888464/-650965517, len 548
[78214.126584] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78214.127271] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1851988335/-877252773/695546869/-225934220, len 548
[78214.210238] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78214.210271] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1277412514/-2057844218/-1021179555/-91396667, len 548
[78214.260735] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78214.261045] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1231413152/-214797924/-1481816745/-1376191182, len 548
[78214.386311] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78214.387063] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 338469046/-1799009170/-96509089/-1013991521, len 548
[78214.513760] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78214.514041] rndis_host 3-9:1.0 enp0s20u9: bad rndis message -431436533/-539194042/2034659576/-244068548, len 548
[78214.642687] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78214.642974] rndis_host 3-9:1.0 enp0s20u9: bad rndis message -927689477/948732430/26418062/76175373, len 548
[78214.772365] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78214.772866] rndis_host 3-9:1.0 enp0s20u9: bad rndis message -1684956545/-172899499/1725123600/662171655, len 548
[78214.896142] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78214.896904] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 84076119/796841153/1020965658/-1286461757, len 548
[78215.018380] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78215.018972] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 930597881/-1791002248/-1397559056/-134399856, len 548
[78215.217262] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78215.217282] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1443753985/486728441/320106976/-987512689, len 548
[78215.342544] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78215.343209] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 609819453/-1575160936/-1030019640/1971513523, len 548
[78215.454935] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78215.455560] rndis_host 3-9:1.0 enp0s20u9: bad rndis message -1146348536/12542297/-1181341947/173064767, len 548
[78215.554938] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78215.555157] rndis_host 3-9:1.0 enp0s20u9: bad rndis message -1586701922/2105434844/67968484/478009949, len 548
[78215.656964] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78215.657764] rndis_host 3-9:1.0 enp0s20u9: bad rndis message -2010532499/-428777225/-913106362/1700629661, len 1846
[78215.759102] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78215.759273] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 8957911/-55399652/254481186/781267956, len 548
[78215.886991] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78215.887236] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 283345402/-393017851/622211229/-1621938810, len 548
[78216.039975] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78216.040593] rndis_host 3-9:1.0 enp0s20u9: bad rndis message -774067577/740327363/1394717201/1870184950, len 548
[78216.064995] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78216.065019] rndis_host 3-9:1.0 enp0s20u9: bad rndis message -1488794099/949017101/563058816/1234612065, len 548
[78216.140773] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78216.141196] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 973637352/-1676660256/-643859106/-293988447, len 548
[78216.264113] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78216.264231] rndis_host 3-9:1.0 enp0s20u9: bad rndis message -1355004786/67511672/-1208103326/832735088, len 548
[78216.388451] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78216.389260] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 740504757/-2049838369/-1422332143/-1592920764, len 548
[78216.512919] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78216.513297] rndis_host 3-9:1.0 enp0s20u9: bad rndis message -909651332/507143459/1375928092/1522993659, len 548
[78216.640219] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78216.640251] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1582522928/-2082421907/-627775921/-41785296, len 548
[78216.765491] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78216.766264] rndis_host 3-9:1.0 enp0s20u9: bad rndis message -521012456/1374598223/-231299891/970638541, len 548
[78216.890022] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78216.890324] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 89130958/-1530942909/-1649415967/105176461, len 548
[78217.016836] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78217.017283] rndis_host 3-9:1.0 enp0s20u9: bad rndis message -1600313178/106169254/-101967744/1398600788, len 548
[78217.171928] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78217.172568] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1846001878/-755765346/181816545/558429318, len 548
[78217.196710] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1/1298/36/1254, len 750
[78217.196945] rndis_host 3-9:1.0 enp0s20u9: bad rndis message 1769762164/-1018178086/1137941038/-1153695535, len 548
enp0s20u9: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.42.166 netmask 255.255.255.0 broadcast 192.168.42.255
inet6 fe80::890:3fff:fe0e:d2c6 prefixlen 64 scopeid 0x20<link>
ether 0a:90:3f:0e:d2:c6 txqueuelen 1000 (Ethernet)
RX packets 716 bytes 859199 (839.0 KiB)
RX errors 459 dropped 0 overruns 0 frame 459
TX packets 731 bytes 86682 (84.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
