v4.19.13 snapshot.
diff --git a/arch/mips/net/bpf_jit.h b/arch/mips/net/bpf_jit.h
new file mode 100644
index 0000000..8f9f548
--- /dev/null
+++ b/arch/mips/net/bpf_jit.h
@@ -0,0 +1,84 @@
+/*
+ * Just-In-Time compiler for BPF filters on MIPS
+ *
+ * Copyright (c) 2014 Imagination Technologies Ltd.
+ * Author: Markos Chandras <markos.chandras@imgtec.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; version 2 of the License.
+ */
+
+#ifndef BPF_JIT_MIPS_OP_H
+#define BPF_JIT_MIPS_OP_H
+
+/* Registers used by JIT */
+#define MIPS_R_ZERO 0
+#define MIPS_R_V0 2
+#define MIPS_R_A0 4
+#define MIPS_R_A1 5
+#define MIPS_R_T4 12
+#define MIPS_R_T5 13
+#define MIPS_R_T6 14
+#define MIPS_R_T7 15
+#define MIPS_R_S0 16
+#define MIPS_R_S1 17
+#define MIPS_R_S2 18
+#define MIPS_R_S3 19
+#define MIPS_R_S4 20
+#define MIPS_R_S5 21
+#define MIPS_R_S6 22
+#define MIPS_R_S7 23
+#define MIPS_R_SP 29
+#define MIPS_R_RA 31
+
+/* Conditional codes */
+#define MIPS_COND_EQ 0x1
+#define MIPS_COND_GE (0x1 << 1)
+#define MIPS_COND_GT (0x1 << 2)
+#define MIPS_COND_NE (0x1 << 3)
+#define MIPS_COND_ALL (0x1 << 4)
+/* Conditionals on X register or K immediate */
+#define MIPS_COND_X (0x1 << 5)
+#define MIPS_COND_K (0x1 << 6)
+
+#define r_ret MIPS_R_V0
+
+/*
+ * Use 2 scratch registers to avoid pipeline interlocks.
+ * There is no overhead during epilogue and prologue since
+ * any of the $s0-$s6 registers will only be preserved if
+ * they are going to actually be used.
+ */
+#define r_skb_hl MIPS_R_S0 /* skb header length */
+#define r_skb_data MIPS_R_S1 /* skb actual data */
+#define r_off MIPS_R_S2
+#define r_A MIPS_R_S3
+#define r_X MIPS_R_S4
+#define r_skb MIPS_R_S5
+#define r_M MIPS_R_S6
+#define r_skb_len MIPS_R_S7
+#define r_s0 MIPS_R_T4 /* scratch reg 1 */
+#define r_s1 MIPS_R_T5 /* scratch reg 2 */
+#define r_tmp_imm MIPS_R_T6 /* No need to preserve this */
+#define r_tmp MIPS_R_T7 /* No need to preserve this */
+#define r_zero MIPS_R_ZERO
+#define r_sp MIPS_R_SP
+#define r_ra MIPS_R_RA
+
+#ifndef __ASSEMBLY__
+
+/* Declare ASM helpers */
+
+#define DECLARE_LOAD_FUNC(func) \
+ extern u8 func(unsigned long *skb, int offset); \
+ extern u8 func##_negative(unsigned long *skb, int offset); \
+ extern u8 func##_positive(unsigned long *skb, int offset)
+
+DECLARE_LOAD_FUNC(sk_load_word);
+DECLARE_LOAD_FUNC(sk_load_half);
+DECLARE_LOAD_FUNC(sk_load_byte);
+
+#endif
+
+#endif /* BPF_JIT_MIPS_OP_H */