LoongArch: BPF: Support unconditional bswap instructions

Add support for unconditional bswap instruction. Since LoongArch is
always little-endian, just treat unconditional bswap the same as big-
endian conversion.

Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

diff --git a/arch/loongarch/net/bpf_jit.c b/arch/loongarch/net/bpf_jit.c
index ac9edf02675cbfd27236fdba96a107e572a75d7b..a8be6d4b058cd4338b23ef920fb294cd24e03023 100644 (file)
--- a/arch/loongarch/net/bpf_jit.c
+++ b/arch/loongarch/net/bpf_jit.c
@@ -731,6 +731,7 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx, bool ext
                break;
 
        case BPF_ALU | BPF_END | BPF_FROM_BE:
+       case BPF_ALU64 | BPF_END | BPF_FROM_LE:
                switch (imm) {
                case 16:
                        emit_insn(ctx, revb2h, dst, dst);