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Several users with alc(4)-based "Killer" Ethernet cards have reported issues with this driver not passing traffic, which are solved by disabling MSI-X using the provided tunable. To work around this issue, disable MSI-X by default on this card. This is done by having msix_disable default to 2, which means "auto-detect". The user can still override this to either 0 or 1 as desired. Since these are slow (1Gbps) Ethernet ICs used in low-end systems, it's unlikely this will cause any practical performance issues; on the other hand, the card not working by default likely causes issues for many new FreeBSD users who find their network port doesn't work and have no idea why. PR: 230807 MFC after: 1 week Reviewed by: imp Pull Request: https://github.com/freebsd/freebsd-src/pull/1185 |
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| if_alc.c | ||
| if_alcreg.h | ||
| if_alcvar.h | ||