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x/sys: Increase the number of linux routing tables #40542
Description
What version of Go are you using (go version)?
go version go1.14.4 linux/amd64
At present, the maximum number of routing tables is 32K.However, only 255 routing tables are supported in the code.
Should the code be modified to support a larger number of routing tables?
Activity
tklauser commentedon Aug 3, 2020
I don't think there's anything we need to change in
x/sys.type RtMsgand all the other types inztypes_*.goare auto-generated from kernel headers. These types need to correspond to the respective type expected by the kernel.As a side-note (unrelated to
x/sys):RTA_TABLErtnetlink attributes are probably what you are looking for, see https://man7.org/linux/man-pages/man7/rtnetlink.7.html. If such an attribute is present its value is used as the table ID and the the table field instruct rt_msgis ignored.