netdev - bnxt_en: NIC Link is Up, 100 Mbps full duplex

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-Id: <201811281608.14617.linux@rainbow-software.org>
Date:   Wed, 28 Nov 2018 16:08:14 +0100
From:   Ondrej Zary <linux@...nbow-software.org>
To:     Michael Chan <michael.chan@...adcom.com>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: bnxt_en: NIC Link is Up, 100 Mbps full duplex - but no data

Hello,
I have a new Dell R740 server with BCM57416:
Ethernet controller [0200]: Broadcom Limited BCM57416 NetXtreme-E 10GBase-T RDMA Ethernet Controller [14e4:16d8] (rev 01)
Subsystem: Broadcom Limited BCM57416 NetXtreme-E Dual-Media 10G RDMA Ethernet Controller [14e4:4160]

When I connect a cable from 100Mbps switch, everything looks good - the link
LED lights up orange, data LED flashes green as when data is sent/received,
this appears in log:
[ 3791.655357] bnxt_en 0000:17:00.0 eno1np0: NIC Link is Up, 100 Mbps full duplex, Flow control: ON - receive & transmit
[ 3791.655361] bnxt_en 0000:17:00.0 eno1np0: EEE is not active
[ 3791.655364] bnxt_en 0000:17:00.0 eno1np0: FEC autoneg off encodings: None

But no data comes in or out. tcpdump shows only outgoing packets and they're
not transmitted in real (not seen by other machines).

It works fine after connecting through a gigabit switch.

Currently running 4.18.0-2-amd64 kernel (Debian testing).

Any ideas?

-- 
Ondrej Zary