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nfp: bpf: don't use instruction number for jump target 

Instruction number is meaningless at code gen phase.  The target
of the instruction is overwritten by nfp_fixup_branches().  The
convention is to put the raw offset in target address as a place
holder.  See cmp_* functions.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Jakub Kicinski 2019-01-22 22:45:25 -08:00 committed by Alexei Starovoitov
parent 08ca90afba
commit e90287f3aa
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/netronome/nfp/bpf/jit.c
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@ -3182,7 +3182,7 @@ bpf_to_bpf_call(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta)
wrp_immed_relo(nfp_prog, imm_b(nfp_prog), 0, RELO_IMMED_REL);
} else {
ret_tgt = nfp_prog_current_offset(nfp_prog) + 2;
emit_br(nfp_prog, BR_UNC, meta->n + 1 + meta->insn.imm, 1);
emit_br(nfp_prog, BR_UNC, meta->insn.imm, 1);
offset_br = nfp_prog_current_offset(nfp_prog);
}
wrp_immed_relo(nfp_prog, ret_reg(nfp_prog), ret_tgt, RELO_IMMED_REL);