From e90287f3aaf666c9e18e60f889f82ecfb0ee3c5d Mon Sep 17 00:00:00 2001
From: Jakub Kicinski <jakub.kicinski@netronome.com>
Date: Tue, 22 Jan 2019 22:45:25 -0800
Subject: [PATCH] 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>
---
drivers/net/ethernet/netronome/nfp/bpf/jit.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/netronome/nfp/bpf/jit.c b/drivers/net/ethernet/netronome/nfp/bpf/jit.c
index e23ca90289f71..323587dee498e 100644
--- a/drivers/net/ethernet/netronome/nfp/bpf/jit.c
+++ b/drivers/net/ethernet/netronome/nfp/bpf/jit.c
@@ -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);
--
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