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
| ||
|
Message-ID: <20221012072411.dk7dynbttnaozyrl@skbuf> Date: Wed, 12 Oct 2022 10:24:11 +0300 From: Vladimir Oltean <olteanv@...il.com> To: Christian Marangi <ansuelsmth@...il.com> Cc: Andrew Lunn <andrew@...n.ch>, Vivien Didelot <vivien.didelot@...il.com>, Florian Fainelli <f.fainelli@...il.com>, "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, Pawel Dembicki <paweldembicki@...il.com>, Lech Perczak <lech.perczak@...il.com> Subject: Re: [net PATCH 1/2] net: dsa: qca8k: fix inband mgmt for big-endian systems On Mon, Oct 10, 2022 at 02:44:46PM +0200, Christian Marangi wrote: > On Mon, Oct 10, 2022 at 08:53:01PM +0200, Andrew Lunn wrote: > > > /* Special struct emulating a Ethernet header */ > > > struct qca_mgmt_ethhdr { > > > - u32 command; /* command bit 31:0 */ > > > - u32 seq; /* seq 63:32 */ > > > - u32 mdio_data; /* first 4byte mdio */ > > > + __le32 command; /* command bit 31:0 */ > > > + __le32 seq; /* seq 63:32 */ > > > + __le32 mdio_data; /* first 4byte mdio */ > > > __be16 hdr; /* qca hdr */ > > > } __packed; > > > > It looks odd that hdr is BE while the rest are LE. Did you check this? > > > > Andrew > > Yes we did many test to analyze this and I just checked with some > tcpdump that the hdr is BE everytime. If you want I can provide you some > tcpdump from 2 different systems. > > Anyway it looks like this family switch treats the hdr in a standard way > with the network byte order and for anything else stick to LE. > > Also as a side note the tagger worked correctly before the mgmt feature > on BE systems and also works correctly now... just any command is slow > as the mgmt system has to timeout and fallback to legacy mdio. Could you provide a tcpdump?
Powered by blists - more mailing lists