nfp: bpf: don't depend on high order allocations for program image

Browse source

The translator pre-allocates a buffer of maximal program size.
Due to HW/FW limitations the program buffer can't currently be
longer than 128Kb, so we used to kmalloc() it, and then map for
DMA directly.

Now that the late branch resolution is copying the program image
anyway, we can just kvmalloc() the buffer.  While at it, after
translation reallocate the buffer to save space.

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

...

This commit is contained in:

Jakub Kicinski 2018-01-10 12:26:02 +00:00 • committed by Daniel Borkmann

parent 2314fe9ed0

commit 44a12ecc1c

2 changed files with 19 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

16

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

View file

5

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

View file