diff --git a/lib/librte_pipeline/rte_swx_pipeline.c b/lib/librte_pipeline/rte_swx_pipeline.c
index 9d64611..7f62425 100644
--- a/lib/librte_pipeline/rte_swx_pipeline.c
+++ b/lib/librte_pipeline/rte_swx_pipeline.c
@@ -5,6 +5,7 @@
 #include <string.h>
 #include <stdio.h>
 #include <errno.h>
+#include <inttypes.h>
 #include <sys/queue.h>
 #include <arpa/inet.h>
 
@@ -480,7 +481,7 @@ struct instr_dst_src {
 	struct instr_operand dst;
 	union {
 		struct instr_operand src;
-		uint32_t src_val;
+		uint64_t src_val;
 	};
 };
 
@@ -508,7 +509,7 @@ struct instr_jmp {
 
 	union {
 		struct instr_operand b;
-		uint32_t b_val;
+		uint64_t b_val;
 	};
 };
 
@@ -3189,7 +3190,8 @@ struct_field_parse(struct rte_swx_pipeline *p,
 {
 	char *dst = tokens[1], *src = tokens[2];
 	struct field *fdst, *fsrc;
-	uint32_t dst_struct_id, src_struct_id, src_val;
+	uint64_t src_val;
+	uint32_t dst_struct_id, src_struct_id;
 
 	CHECK(n_tokens == 3, EINVAL);
 
@@ -3214,17 +3216,17 @@ struct_field_parse(struct rte_swx_pipeline *p,
 	}
 
 	/* MOV_I. */
-	src_val = strtoul(src, &src, 0);
+	src_val = strtoull(src, &src, 0);
 	CHECK(!src[0], EINVAL);
 
 	if (dst[0] == 'h')
-		src_val = htonl(src_val);
+		src_val = hton64(src_val) >> (64 - fdst->n_bits);
 
 	instr->type = INSTR_MOV_I;
 	instr->mov.dst.struct_id = (uint8_t)dst_struct_id;
 	instr->mov.dst.n_bits = fdst->n_bits;
 	instr->mov.dst.offset = fdst->offset / 8;
-	instr->mov.src_val = (uint32_t)src_val;
+	instr->mov.src_val = src_val;
 	return 0;
 }
 
@@ -3264,7 +3266,7 @@ struct_field_parse(struct rte_swx_pipeline *p,
 	struct thread *t = &p->threads[p->thread_id];
 	struct instruction *ip = t->ip;
 
-	TRACE("[Thread %2u] mov m.f %x\n",
+	TRACE("[Thread %2u] mov m.f %" PRIx64 "\n",
 	      p->thread_id,
 	      ip->mov.src_val);
 
@@ -3451,7 +3453,8 @@ struct_field_parse(struct rte_swx_pipeline *p,
 {
 	char *dst = tokens[1], *src = tokens[2];
 	struct field *fdst, *fsrc;
-	uint32_t dst_struct_id, src_struct_id, src_val;
+	uint64_t src_val;
+	uint32_t dst_struct_id, src_struct_id;
 
 	CHECK(n_tokens == 3, EINVAL);
 
@@ -3479,7 +3482,7 @@ struct_field_parse(struct rte_swx_pipeline *p,
 	}
 
 	/* ADD_MI, ADD_HI. */
-	src_val = strtoul(src, &src, 0);
+	src_val = strtoull(src, &src, 0);
 	CHECK(!src[0], EINVAL);
 
 	instr->type = INSTR_ALU_ADD_MI;
@@ -3489,7 +3492,7 @@ struct_field_parse(struct rte_swx_pipeline *p,
 	instr->alu.dst.struct_id = (uint8_t)dst_struct_id;
 	instr->alu.dst.n_bits = fdst->n_bits;
 	instr->alu.dst.offset = fdst->offset / 8;
-	instr->alu.src_val = (uint32_t)src_val;
+	instr->alu.src_val = src_val;
 	return 0;
 }
 
@@ -3503,7 +3506,8 @@ struct_field_parse(struct rte_swx_pipeline *p,
 {
 	char *dst = tokens[1], *src = tokens[2];
 	struct field *fdst, *fsrc;
-	uint32_t dst_struct_id, src_struct_id, src_val;
+	uint64_t src_val;
+	uint32_t dst_struct_id, src_struct_id;
 
 	CHECK(n_tokens == 3, EINVAL);
 
@@ -3531,7 +3535,7 @@ struct_field_parse(struct rte_swx_pipeline *p,
 	}
 
 	/* SUB_MI, SUB_HI. */
-	src_val = strtoul(src, &src, 0);
+	src_val = strtoull(src, &src, 0);
 	CHECK(!src[0], EINVAL);
 
 	instr->type = INSTR_ALU_SUB_MI;
@@ -3541,7 +3545,7 @@ struct_field_parse(struct rte_swx_pipeline *p,
 	instr->alu.dst.struct_id = (uint8_t)dst_struct_id;
 	instr->alu.dst.n_bits = fdst->n_bits;
 	instr->alu.dst.offset = fdst->offset / 8;
-	instr->alu.src_val = (uint32_t)src_val;
+	instr->alu.src_val = src_val;
 	return 0;
 }
 
@@ -3632,7 +3636,8 @@ struct_field_parse(struct rte_swx_pipeline *p,
 {
 	char *dst = tokens[1], *src = tokens[2];
 	struct field *fdst, *fsrc;
-	uint32_t dst_struct_id, src_struct_id, src_val;
+	uint64_t src_val;
+	uint32_t dst_struct_id, src_struct_id;
 
 	CHECK(n_tokens == 3, EINVAL);
 
@@ -3660,7 +3665,7 @@ struct_field_parse(struct rte_swx_pipeline *p,
 	}
 
 	/* SHL_MI, SHL_HI. */
-	src_val = strtoul(src, &src, 0);
+	src_val = strtoull(src, &src, 0);
 	CHECK(!src[0], EINVAL);
 
 	instr->type = INSTR_ALU_SHL_MI;
@@ -3670,7 +3675,7 @@ struct_field_parse(struct rte_swx_pipeline *p,
 	instr->alu.dst.struct_id = (uint8_t)dst_struct_id;
 	instr->alu.dst.n_bits = fdst->n_bits;
 	instr->alu.dst.offset = fdst->offset / 8;
-	instr->alu.src_val = (uint32_t)src_val;
+	instr->alu.src_val = src_val;
 	return 0;
 }
 
@@ -3684,7 +3689,8 @@ struct_field_parse(struct rte_swx_pipeline *p,
 {
 	char *dst = tokens[1], *src = tokens[2];
 	struct field *fdst, *fsrc;
-	uint32_t dst_struct_id, src_struct_id, src_val;
+	uint64_t src_val;
+	uint32_t dst_struct_id, src_struct_id;
 
 	CHECK(n_tokens == 3, EINVAL);
 
@@ -3712,7 +3718,7 @@ struct_field_parse(struct rte_swx_pipeline *p,
 	}
 
 	/* SHR_MI, SHR_HI. */
-	src_val = strtoul(src, &src, 0);
+	src_val = strtoull(src, &src, 0);
 	CHECK(!src[0], EINVAL);
 
 	instr->type = INSTR_ALU_SHR_MI;
@@ -3722,7 +3728,7 @@ struct_field_parse(struct rte_swx_pipeline *p,
 	instr->alu.dst.struct_id = (uint8_t)dst_struct_id;
 	instr->alu.dst.n_bits = fdst->n_bits;
 	instr->alu.dst.offset = fdst->offset / 8;
-	instr->alu.src_val = (uint32_t)src_val;
+	instr->alu.src_val = src_val;
 	return 0;
 }
 
@@ -3736,7 +3742,8 @@ struct_field_parse(struct rte_swx_pipeline *p,
 {
 	char *dst = tokens[1], *src = tokens[2];
 	struct field *fdst, *fsrc;
-	uint32_t dst_struct_id, src_struct_id, src_val;
+	uint64_t src_val;
+	uint32_t dst_struct_id, src_struct_id;
 
 	CHECK(n_tokens == 3, EINVAL);
 
@@ -3761,17 +3768,17 @@ struct_field_parse(struct rte_swx_pipeline *p,
 	}
 
 	/* AND_I. */
-	src_val = strtoul(src, &src, 0);
+	src_val = strtoull(src, &src, 0);
 	CHECK(!src[0], EINVAL);
 
 	if (dst[0] == 'h')
-		src_val = htonl(src_val);
+		src_val = hton64(src_val) >> (64 - fdst->n_bits);
 
 	instr->type = INSTR_ALU_AND_I;
 	instr->alu.dst.struct_id = (uint8_t)dst_struct_id;
 	instr->alu.dst.n_bits = fdst->n_bits;
 	instr->alu.dst.offset = fdst->offset / 8;
-	instr->alu.src_val = (uint32_t)src_val;
+	instr->alu.src_val = src_val;
 	return 0;
 }
 
@@ -3785,7 +3792,8 @@ struct_field_parse(struct rte_swx_pipeline *p,
 {
 	char *dst = tokens[1], *src = tokens[2];
 	struct field *fdst, *fsrc;
-	uint32_t dst_struct_id, src_struct_id, src_val;
+	uint64_t src_val;
+	uint32_t dst_struct_id, src_struct_id;
 
 	CHECK(n_tokens == 3, EINVAL);
 
@@ -3810,17 +3818,17 @@ struct_field_parse(struct rte_swx_pipeline *p,
 	}
 
 	/* OR_I. */
-	src_val = strtoul(src, &src, 0);
+	src_val = strtoull(src, &src, 0);
 	CHECK(!src[0], EINVAL);
 
 	if (dst[0] == 'h')
-		src_val = htonl(src_val);
+		src_val = hton64(src_val) >> (64 - fdst->n_bits);
 
 	instr->type = INSTR_ALU_OR_I;
 	instr->alu.dst.struct_id = (uint8_t)dst_struct_id;
 	instr->alu.dst.n_bits = fdst->n_bits;
 	instr->alu.dst.offset = fdst->offset / 8;
-	instr->alu.src_val = (uint32_t)src_val;
+	instr->alu.src_val = src_val;
 	return 0;
 }
 
@@ -3834,7 +3842,8 @@ struct_field_parse(struct rte_swx_pipeline *p,
 {
 	char *dst = tokens[1], *src = tokens[2];
 	struct field *fdst, *fsrc;
-	uint32_t dst_struct_id, src_struct_id, src_val;
+	uint64_t src_val;
+	uint32_t dst_struct_id, src_struct_id;
 
 	CHECK(n_tokens == 3, EINVAL);
 
@@ -3859,17 +3868,17 @@ struct_field_parse(struct rte_swx_pipeline *p,
 	}
 
 	/* XOR_I. */
-	src_val = strtoul(src, &src, 0);
+	src_val = strtoull(src, &src, 0);
 	CHECK(!src[0], EINVAL);
 
 	if (dst[0] == 'h')
-		src_val = htonl(src_val);
+		src_val = hton64(src_val) >> (64 - fdst->n_bits);
 
 	instr->type = INSTR_ALU_XOR_I;
 	instr->alu.dst.struct_id = (uint8_t)dst_struct_id;
 	instr->alu.dst.n_bits = fdst->n_bits;
 	instr->alu.dst.offset = fdst->offset / 8;
-	instr->alu.src_val = (uint32_t)src_val;
+	instr->alu.src_val = src_val;
 	return 0;
 }
 
@@ -4765,7 +4774,8 @@ struct_field_parse(struct rte_swx_pipeline *p,
 {
 	char *a = tokens[2], *b = tokens[3];
 	struct field *fa, *fb;
-	uint32_t a_struct_id, b_struct_id, b_val;
+	uint64_t b_val;
+	uint32_t a_struct_id, b_struct_id;
 
 	CHECK(n_tokens == 4, EINVAL);
 
@@ -4793,18 +4803,18 @@ struct_field_parse(struct rte_swx_pipeline *p,
 	}
 
 	/* JMP_EQ_I. */
-	b_val = strtoul(b, &b, 0);
+	b_val = strtoull(b, &b, 0);
 	CHECK(!b[0], EINVAL);
 
 	if (a[0] == 'h')
-		b_val = htonl(b_val);
+		b_val = hton64(b_val) >> (64 - fa->n_bits);
 
 	instr->type = INSTR_JMP_EQ_I;
 	instr->jmp.ip = NULL; /* Resolved later. */
 	instr->jmp.a.struct_id = (uint8_t)a_struct_id;
 	instr->jmp.a.n_bits = fa->n_bits;
 	instr->jmp.a.offset = fa->offset / 8;
-	instr->jmp.b_val = (uint32_t)b_val;
+	instr->jmp.b_val = b_val;
 	return 0;
 }
 
@@ -4818,7 +4828,8 @@ struct_field_parse(struct rte_swx_pipeline *p,
 {
 	char *a = tokens[2], *b = tokens[3];
 	struct field *fa, *fb;
-	uint32_t a_struct_id, b_struct_id, b_val;
+	uint64_t b_val;
+	uint32_t a_struct_id, b_struct_id;
 
 	CHECK(n_tokens == 4, EINVAL);
 
@@ -4846,18 +4857,18 @@ struct_field_parse(struct rte_swx_pipeline *p,
 	}
 
 	/* JMP_NEQ_I. */
-	b_val = strtoul(b, &b, 0);
+	b_val = strtoull(b, &b, 0);
 	CHECK(!b[0], EINVAL);
 
 	if (a[0] == 'h')
-		b_val = htonl(b_val);
+		b_val = hton64(b_val) >> (64 - fa->n_bits);
 
 	instr->type = INSTR_JMP_NEQ_I;
 	instr->jmp.ip = NULL; /* Resolved later. */
 	instr->jmp.a.struct_id = (uint8_t)a_struct_id;
 	instr->jmp.a.n_bits = fa->n_bits;
 	instr->jmp.a.offset = fa->offset / 8;
-	instr->jmp.b_val = (uint32_t)b_val;
+	instr->jmp.b_val = b_val;
 	return 0;
 }
 
@@ -4871,7 +4882,8 @@ struct_field_parse(struct rte_swx_pipeline *p,
 {
 	char *a = tokens[2], *b = tokens[3];
 	struct field *fa, *fb;
-	uint32_t a_struct_id, b_struct_id, b_val;
+	uint64_t b_val;
+	uint32_t a_struct_id, b_struct_id;
 
 	CHECK(n_tokens == 4, EINVAL);
 
@@ -4902,7 +4914,7 @@ struct_field_parse(struct rte_swx_pipeline *p,
 	}
 
 	/* JMP_LT_MI, JMP_LT_HI. */
-	b_val = strtoul(b, &b, 0);
+	b_val = strtoull(b, &b, 0);
 	CHECK(!b[0], EINVAL);
 
 	instr->type = INSTR_JMP_LT_MI;
@@ -4913,7 +4925,7 @@ struct_field_parse(struct rte_swx_pipeline *p,
 	instr->jmp.a.struct_id = (uint8_t)a_struct_id;
 	instr->jmp.a.n_bits = fa->n_bits;
 	instr->jmp.a.offset = fa->offset / 8;
-	instr->jmp.b_val = (uint32_t)b_val;
+	instr->jmp.b_val = b_val;
 	return 0;
 }
 
@@ -4927,7 +4939,8 @@ struct_field_parse(struct rte_swx_pipeline *p,
 {
 	char *a = tokens[2], *b = tokens[3];
 	struct field *fa, *fb;
-	uint32_t a_struct_id, b_struct_id, b_val;
+	uint64_t b_val;
+	uint32_t a_struct_id, b_struct_id;
 
 	CHECK(n_tokens == 4, EINVAL);
 
@@ -4958,7 +4971,7 @@ struct_field_parse(struct rte_swx_pipeline *p,
 	}
 
 	/* JMP_GT_MI, JMP_GT_HI. */
-	b_val = strtoul(b, &b, 0);
+	b_val = strtoull(b, &b, 0);
 	CHECK(!b[0], EINVAL);
 
 	instr->type = INSTR_JMP_GT_MI;
@@ -4969,7 +4982,7 @@ struct_field_parse(struct rte_swx_pipeline *p,
 	instr->jmp.a.struct_id = (uint8_t)a_struct_id;
 	instr->jmp.a.n_bits = fa->n_bits;
 	instr->jmp.a.offset = fa->offset / 8;
-	instr->jmp.b_val = (uint32_t)b_val;
+	instr->jmp.b_val = b_val;
 	return 0;
 }
 
diff --git a/lib/librte_pipeline/rte_swx_pipeline.h b/lib/librte_pipeline/rte_swx_pipeline.h
index aed6273..7d59c30 100644
--- a/lib/librte_pipeline/rte_swx_pipeline.h
+++ b/lib/librte_pipeline/rte_swx_pipeline.h
@@ -371,7 +371,7 @@ struct rte_swx_field_params {
  *<pre>+-----+---------------------------+------------------+-----+-----+</pre>
  *<pre>| T   | Table action data field   | t.header.field   | NO  | YES |</pre>
  *<pre>+-----+---------------------------+------------------+-----+-----+</pre>
- *<pre>| I   | Immediate value (32-bit)  | h.header.field   | NO  | YES |</pre>
+ *<pre>| I   | Immediate value (64-bit)  | h.header.field   | NO  | YES |</pre>
  *<pre>+-----+---------------------------+------------------+-----+-----+</pre>
  *
  * Instruction set:
