From: Ido Schimmel <ido...@idosch.org> Date: Mon, 3 Aug 2020 19:11:32 +0300
> From: Ido Schimmel <ido...@mellanox.com> > > Petr says: > > A recent patch set added the ability to mirror buffer related drops > (e.g., early drops) through a netdev. This patch set adds the ability to > trap such packets to the local CPU for analysis. > > The trapping towards the CPU is configured by using tc-trap action > instead of tc-mirred as was done when the packets were mirrored through > a netdev. A future patch set will also add the ability to sample the > dropped packets using tc-sample action. > > The buffer related drop traps are added to devlink, which means that the > dropped packets can be reported to user space via the kernel's > drop_monitor module. > > Patch set overview: > > Patch #1 adds the early_drop trap to devlink > > Patch #2 adds extack to a few devlink operations to facilitate better > error reporting to user space. This is necessary - among other things - > because the action of buffer drop traps cannot be changed in mlxsw > > Patch #3 performs a small refactoring in mlxsw, patch #4 fixes a bug that > this patchset would trigger. > > Patches #5-#6 add the infrastructure required to support different traps > / trap groups in mlxsw per-ASIC. This is required because buffer drop > traps are not supported by Spectrum-1 > > Patch #7 extends mlxsw to register the early_drop trap > > Patch #8 adds the offload logic for the "trap" action at a qevent block. > > Patch #9 adds a mlxsw-specific selftest. Series applied, thank you.
