Hi Corentin,
On 16-05-2018 19:32, Corentin Labbe wrote:
> Hello
>
> The dwmac-sun8i driver is broken in next-20180515, symptom are no RX and TX
> errors as shown by ifconfig:
> eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
> inet 192.168.1.204 netmask 255.255.255.0 broadcast 192.168.1.255
> ether 96:75:ff:0d:f6:d8 txqueuelen 1000 (Ethernet)
> RX packets 0 bytes 0 (0.0 B)
> RX errors 0 dropped 0 overruns 0 frame 0
> TX packets 0 bytes 4956 (4.8 KiB)
> TX errors 118 dropped 0 overruns 0 carrier 0 collisions 0
>
> Reverting the following commit made the driver working:
> 4dbbe8dde8485b89bce8bbbe7564337fd7eed69f ("net: stmmac: Add support for U32
> TC filter using Flexible RX Parser")
> 5f0456b43140af9413397cc11d03d18b9f2fc2fc ("net: stmmac: Implement logic to
> automatically select HW Interface")
>
> Note that reverting only 4dbbe8dde8485b89bce8bbbe7564337fd7eed69f lead to
> crash:
> [ 31.385110] Backtrace:
> [ 31.387576] [<c0510cd4>] (stmmac_open) from [<c062cf48>]
> (__dev_open+0xe4/0x180)
> [ 31.394972] r10:ed447d04 r9:edc5d010 r8:ef02002c r7:c08670a4 r6:00000000
> r5:c0c08488
> [ 31.402793] r4:ef020000
> [ 31.405335] [<c062ce64>] (__dev_open) from [<c062d374>]
> (__dev_change_flags+0x190/0x1e8)
> [ 31.413421] r8:00001002 r7:c0c08488 r6:00001003 r5:00000001 r4:ef020000
> [ 31.420122] [<c062d1e4>] (__dev_change_flags) from [<c062d3ec>]
> (dev_change_flags+0x20/0x50)
> [ 31.428555] r9:edc5d010 r8:ed447c18 r7:ef020134 r6:00000000 r5:00001002
> r4:ef020000
> [ 31.436300] [<c062d3cc>] (dev_change_flags) from [<c0646ef0>]
> (do_setlink+0x28c/0xbdc)
> [ 31.444213] r9:edc5d010 r8:ed447c18 r7:00000000 r6:c0c08488 r5:ed447b50
> r4:ef020000
> [ 31.451955] [<c0646c64>] (do_setlink) from [<c0648064>]
> (rtnl_newlink+0x54c/0x7a8)
> [ 31.459522] r10:ed447d04 r9:00000000 r8:00000000 r7:00000000 r6:00000000
> r5:00000000
> [ 31.467343] r4:ef020000
> [ 31.469885] [<c0647b18>] (rtnl_newlink) from [<c06449f8>]
> (rtnetlink_rcv_msg+0x38c/0x544)
> [ 31.478058] r10:ed447d04 r9:00000000 r8:ee242840 r7:00000000 r6:edc5d000
> r5:c0c08488
> [ 31.485879] r4:00000000
> [ 31.488422] [<c064466c>] (rtnetlink_rcv_msg) from [<c066e458>]
> (netlink_rcv_skb+0xc0/0x118)
> [ 31.496768] r10:c0c08488 r9:00000000 r8:00000020 r7:edc5d000 r6:c064466c
> r5:c0c08488
> [ 31.504589] r4:ee242840
> [ 31.507129] [<c066e398>] (netlink_rcv_skb) from [<c0644668>]
> (rtnetlink_rcv+0x18/0x1c)
> [ 31.515042] r8:ed447d60 r7:ee242840 r6:00000020 r5:ee37d800 r4:ee5fac00
> [ 31.521742] [<c0644650>] (rtnetlink_rcv) from [<c066db98>]
> (netlink_unicast+0x190/0x1fc)
> [ 31.529829] [<c066da08>] (netlink_unicast) from [<c066e098>]
> (netlink_sendmsg+0x3cc/0x410)
> [ 31.538089] r10:00000000 r9:00000020 r8:014000c0 r7:ee242840 r6:ee37d800
> r5:c0c08488
> [ 31.545910] r4:ed447f44
> [ 31.548452] [<c066dccc>] (netlink_sendmsg) from [<c0604460>]
> (sock_sendmsg+0x1c/0x2c)
> [ 31.556279] r10:00000000 r9:ed447edc r8:00000000 r7:eefce640 r6:00000000
> r5:c0c08488
> [ 31.564100] r4:ed447f44
> [ 31.566640] [<c0604444>] (sock_sendmsg) from [<c0604d9c>]
> (___sys_sendmsg+0x250/0x264)
> [ 31.574555] [<c0604b4c>] (___sys_sendmsg) from [<c0605e98>]
> (__sys_sendmsg+0x58/0x94)
> [ 31.582382] r10:00000000 r9:ed446000 r8:c01011c4 r7:eefce640 r6:00000000
> r5:bec25150
> [ 31.590203] r4:c0c08488
> [ 31.592743] [<c0605e40>] (__sys_sendmsg) from [<c0605ee8>]
> (sys_sendmsg+0x14/0x18)
> [ 31.600307] r7:00000128 r6:bec2d17c r5:bec25144 r4:00093ee0
> [ 31.605969] [<c0605ed4>] (sys_sendmsg) from [<c0101000>]
> (ret_fast_syscall+0x0/0x28)
> [ 31.613704] Exception stack(0xed447fa8 to 0xed447ff0)
> [ 31.618756] 7fa0: 00093ee0 bec25144 00000003 bec25150
> 00000000 85ce0000
> [ 31.626929] 7fc0: 00093ee0 bec25144 bec2d17c 00000128 000942a8 5afc783a
> 00094000 bec25150
> [ 31.635099] 7fe0: 00000000 bec250f0 0000012c b6e10b5c
> [ 31.640152] Code: e59a261c e59a013c e50b306c e592300c (e593300c)
> [ 31.646632] ---[ end trace 407964b7deb937bf ]---
>
> For the moment, I stil didnt find the issue.
> What to we do now ? do you want that I send revert patchs ?
No need for revert. I checked the patch and dwmac-sun8i
implementation and I think I found the problem. I will send you a
patch to test.
Thanks and Best Regards,
Jose Miguel Abreu
>
> Regards
