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nfp: bpf: round up the size of the stack 

Kernel enforces the alignment of the bottom of the stack, NFP
deals with positive offsets better so we should align the top
of the stack.  Round the stack size to NFP word size (4B).

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 12:25:56 +00:00 committed by Daniel Borkmann
parent 8c6a6d9804
commit c4f7730be5
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/netronome/nfp/bpf/offload.c
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@ -147,7 +147,7 @@ int nfp_bpf_translate(struct nfp_app *app, struct nfp_net *nn,
return -EOPNOTSUPP; return -EOPNOTSUPP;
} }
nfp_prog->stack_depth = prog->aux->stack_depth; nfp_prog->stack_depth = round_up(prog->aux->stack_depth, 4);
nfp_prog->start_off = nn_readw(nn, NFP_NET_CFG_BPF_START); nfp_prog->start_off = nn_readw(nn, NFP_NET_CFG_BPF_START);
nfp_prog->tgt_done = nn_readw(nn, NFP_NET_CFG_BPF_DONE); nfp_prog->tgt_done = nn_readw(nn, NFP_NET_CFG_BPF_DONE);