redonkable/alistair23-linux
redonkable/alistair23-linux
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nfp: bpf: move jump resolution to jit.c

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Jump target resolution should be in jit.c not offload.c.
No functional changes.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Jakub Kicinski 2018-01-10 12:25:59 +00:00 committed by Daniel Borkmann
parent a0f30c97ac
commit 1549921da3
3 changed files with 25 additions and 17 deletions
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23
drivers/net/ethernet/netronome/nfp/bpf/jit.c
View file

@ -2742,3 +2742,26 @@ int nfp_bpf_jit(struct nfp_prog *nfp_prog)
return nfp_bpf_ustore_calc(nfp_prog, (__force __le64 *)nfp_prog->prog);
}
void nfp_bpf_jit_prepare(struct nfp_prog *nfp_prog, unsigned int cnt)
{
struct nfp_insn_meta *meta;
/* Another pass to record jump information. */
list_for_each_entry(meta, &nfp_prog->insns, l) {
u64 code = meta->insn.code;
if (BPF_CLASS(code) == BPF_JMP && BPF_OP(code) != BPF_EXIT &&
BPF_OP(code) != BPF_CALL) {
struct nfp_insn_meta *dst_meta;
unsigned short dst_indx;
dst_indx = meta->n + 1 + meta->insn.off;
dst_meta = nfp_bpf_goto_meta(nfp_prog, meta, dst_indx,
cnt);
meta->jmp_dst = dst_meta;
dst_meta->flags |= FLAG_INSN_IS_JUMP_DST;
}
}
}

1
drivers/net/ethernet/netronome/nfp/bpf/main.h
View file

@ -236,6 +236,7 @@ struct nfp_bpf_vnic {
struct bpf_prog *tc_prog;
};
void nfp_bpf_jit_prepare(struct nfp_prog *nfp_prog, unsigned int cnt);
int nfp_bpf_jit(struct nfp_prog *prog);
extern const struct bpf_prog_offload_ops nfp_bpf_analyzer_ops;

18
drivers/net/ethernet/netronome/nfp/bpf/offload.c
View file

@ -70,23 +70,7 @@ nfp_prog_prepare(struct nfp_prog *nfp_prog, const struct bpf_insn *prog,
list_add_tail(&meta->l, &nfp_prog->insns);
}
/* Another pass to record jump information. */
list_for_each_entry(meta, &nfp_prog->insns, l) {
u64 code = meta->insn.code;
if (BPF_CLASS(code) == BPF_JMP && BPF_OP(code) != BPF_EXIT &&
BPF_OP(code) != BPF_CALL) {
struct nfp_insn_meta *dst_meta;
unsigned short dst_indx;
dst_indx = meta->n + 1 + meta->insn.off;
dst_meta = nfp_bpf_goto_meta(nfp_prog, meta, dst_indx,
cnt);
meta->jmp_dst = dst_meta;
dst_meta->flags |= FLAG_INSN_IS_JUMP_DST;
}
}
nfp_bpf_jit_prepare(nfp_prog, cnt);
return 0;
}