nfp: bpf: add support for reading map memory

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Map memory needs to use 40 bit addressing.  Add handling of such
accesses.  Since 40 bit addresses are formed by using both 32 bit
operands we need to pre-calculate the actual address instead of
adding in the offset inside the instruction, like we did in 32 bit
mode.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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Jakub Kicinski 2018-01-11 20:29:16 -08:00 • committed by Daniel Borkmann

parent 77a3d3113b

commit 3dd43c3319

2 changed files with 76 additions and 9 deletions

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77

drivers/net/ethernet/netronome/nfp/bpf/jit.c

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8

drivers/net/ethernet/netronome/nfp/bpf/verifier.c

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