]> git.baikalelectronics.ru Git - kernel.git/commit
nfp: bpf: add helper for validating stack pointers
authorJakub Kicinski <jakub.kicinski@netronome.com>
Thu, 29 Mar 2018 00:48:29 +0000 (17:48 -0700)
committerAlexei Starovoitov <ast@kernel.org>
Thu, 29 Mar 2018 02:36:13 +0000 (19:36 -0700)
commitcb09c196ff031cb5b26602348420c928c2ce4d04
tree1a890a77ef5f1b07c3f55c76d3e8acef52a32dc9
parent87b12330a1447e3566a2098c61bf1418de0e4b36
nfp: bpf: add helper for validating stack pointers

Our implementation has restriction on stack pointers for function
calls.  Move the common checks into a helper for reuse.  The state
has to be encapsulated into a structure to support parameters
other than BPF_REG_2.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
drivers/net/ethernet/netronome/nfp/bpf/jit.c
drivers/net/ethernet/netronome/nfp/bpf/main.h
drivers/net/ethernet/netronome/nfp/bpf/verifier.c