Messages in this thread | | | Subject | Re: [PATCH net] net: enetc: preserve TX ring priority across reconfiguration | From | patchwork-bot+netdevbpf@kernel ... | Date | Thu, 24 Nov 2022 04:30:15 +0000 |
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Hello:
This patch was applied to netdev/net.git (master) by Jakub Kicinski <kuba@kernel.org>:
On Tue, 22 Nov 2022 15:09:36 +0200 you wrote: > In the blamed commit, a rudimentary reallocation procedure for RX buffer > descriptors was implemented, for the situation when their format changes > between normal (no PTP) and extended (PTP). > > enetc_hwtstamp_set() calls enetc_close() and enetc_open() in a sequence, > and this sequence loses information which was previously configured in > the TX BDR Mode Register, specifically via the enetc_set_bdr_prio() call. > The TX ring priority is configured by tc-mqprio and tc-taprio, and > affects important things for TSN such as the TX time of packets. The > issue manifests itself most visibly by the fact that isochron --txtime > reports premature packet transmissions when PTP is first enabled on an > enetc interface. > > [...]
Here is the summary with links: - [net] net: enetc: preserve TX ring priority across reconfiguration https://git.kernel.org/netdev/net/c/290b5fe096e7
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