|author||David S. Miller <firstname.lastname@example.org>||2016-04-06 17:24:21 -0400|
|committer||David S. Miller <email@example.com>||2016-04-06 17:24:21 -0400|
|parent||Merge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue (diff)|
|parent||mlxsw: spectrum: Add IEEE 802.1Qbb PFC support (diff)|
Merge branch 'mlxsw-dcb'
Jiri Pirko says: ==================== mlxsw: Introduce support for Data Center Bridging Ido says: This patchset introduces support for Quality of Service (QoS) as part of the IEEE Data Center Bridiging (DCB) standards. Patches 1-9 do the required device initialization. Specifically, patches 1-6 initialize the ports' headroom buffers, which are used at ingress to store incoming packets while they go through the switch's pipeline. Patches 7-9 complete them by initializing the egress scheduling. The pipeline mentioned above determines the packet's egress port(s) and traffic class. Ideally, once out of the pipeline the packet moves to the switch's shared buffer (to be introduced in Jiri's patchset, currently default values are used) and scheduled for transmission according to its traffic class. The egress scheduling is configured according to the 802.1Qaz standard, which is part of the DCB infrastructure supported by Linux. This is introduced in patches 10-12. Even after going through the pipeline packets are not always eligible to enter the shared buffer. This is determined by the amount of available space and the quotas associated with the packet. However, if flow control is enabled and the packet is associated with the lossless flow, then it will stay in the headroom and won't be discarded. This is introduced in patches 13-17. Please check individual commit messages for more info, as I tried to keep them pretty detailed. ==================== Signed-off-by: David S. Miller <firstname.lastname@example.org>
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