Feat : LWIP integration part1

Change-Id: Ia26c092d16579c6f845a021ba66bde106363883a
Signed-off-by: Swarup Nayak <swarupnpvt@gmail.com>

1 files changed, 142 insertions, 0 deletions

diff --git a/stacks/lwip_stack/lwip_src/common/spl_def.h b/stacks/lwip_stack/lwip_src/common/spl_def.h
new file mode 100644
index 0000000..b62d179
--- /dev/null
+++ b/stacks/lwip_stack/lwip_src/common/spl_def.h
@@ -0,0 +1,142 @@
+/*
+*
+* Copyright (c) 2018 Huawei Technologies Co.,Ltd.
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at:
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#ifndef __STACKX_DEF_H__
+#define __STACKX_DEF_H__
+
+/* arch.h might define NULL already */
+//#include "lwip/arch.h"
+#include "spl_opt.h"
+#include "stackx_types.h"
+
+#ifdef __cplusplus
+/* *INDENT-OFF* */
+extern "C" {
+/* *INDENT-ON* */
+#endif
+
+#define STACKX_MAX(x, y) (((x) > (y)) ? (x) : (y))
+#define STACKX_MIN(x, y) (((x) < (y)) ? (x) : (y))
+
+/* Endianess-optimized shifting of two u8_t to create one u16_t */
+#if BYTE_ORDER == LITTLE_ENDIAN
+#define STACKX_MAKE_U16(a, b) ((a << 8) | b)
+#else
+#define STACKX_MAKE_U16(a, b) ((b << 8) | a)
+#endif
+
+#ifndef STACKX_PLATFORM_BYTESWAP
+#define STACKX_PLATFORM_BYTESWAP 0
+#endif
+
+#ifndef STACKX_PREFIX_BYTEORDER_FUNCS
+
+/* workaround for naming collisions on some platforms */
+
+#ifdef spl_htons
+#undef spl_htons
+#endif /* htons */
+#ifdef spl_htonl
+#undef spl_htonl
+#endif /* spl_htonl */
+#ifdef spl_ntohs
+#undef spl_ntohs
+#endif /* spl_ntohs */
+#ifdef spl_ntohl
+#undef spl_ntohl
+#endif /* spl_ntohl */
+
+#define spl_htons(x) stackx_htons(x)
+#define spl_ntohs(x) stackx_ntohs(x)
+#define spl_htonl(x) stackx_htonl(x)
+#define spl_ntohl(x) stackx_ntohl(x)
+#endif /* STACKX_PREFIX_BYTEORDER_FUNCS */
+
+#if BYTE_ORDER == BIG_ENDIAN
+#define stackx_htons(x) (x)
+#define stackx_ntohs(x) (x)
+#define stackx_htonl(x) (x)
+#define stackx_ntohl(x) (x)
+#define SPL_PP_HTONS(x) (x)
+#define SPL_PP_NTOHS(x) (x)
+#define SPL_PP_HTONL(x) (x)
+#define SPL_PP_NTOHL(x) (x)
+#else /* BYTE_ORDER != BIG_ENDIAN */
+#if STACKX_PLATFORM_BYTESWAP
+#define stackx_htons(x) STACKX_PLATFORM_HTONS(x)
+#define stackx_ntohs(x) STACKX_PLATFORM_HTONS(x)
+#define stackx_htonl(x) STACKX_PLATFORM_HTONL(x)
+#define stackx_ntohl(x) STACKX_PLATFORM_HTONL(x)
+#else /* STACKX_PLATFORM_BYTESWAP */
+ /**
+  * Convert an u16_t from host- to network byte order.
+  *
+  * @param n u16_t in host byte order
+  * @return n in network byte order
+  */
+static inline u16_t
+stackx_htons (u16_t x)
+{
+  return ((x & 0xff) << 8) | ((x & 0xff00) >> 8);
+}
+
+static inline u16_t
+stackx_ntohs (u16_t x)
+{
+  return stackx_htons (x);
+}
+
+ /**
+  * Convert an u32_t from host- to network byte order.
+  *
+  * @param n u32_t in host byte order
+  * @return n in network byte order
+  */
+static inline u32_t
+stackx_htonl (u32_t x)
+{
+  return ((x & 0xff) << 24) |
+    ((x & 0xff00) << 8) |
+    ((x & 0xff0000UL) >> 8) | ((x & 0xff000000UL) >> 24);
+}
+
+static inline u32_t
+stackx_ntohl (u32_t x)
+{
+  return stackx_htonl (x);
+}
+#endif /* STACKX_PLATFORM_BYTESWAP */
+
+/* These macros should be calculated by the preprocessor and are used
+   with compile-time constants only (so that there is no little-endian
+   overhead at runtime). */
+#define SPL_PP_HTONS(x) ((((x) & 0xff) << 8) | (((x) & 0xff00) >> 8))
+#define SPL_PP_NTOHS(x) SPL_PP_HTONS(x)
+#define SPL_PP_HTONL(x) ((((x) & 0xff) << 24) | \
+					  (((x) & 0xff00) << 8) | \
+					  (((x) & 0xff0000UL) >> 8) | \
+					  (((x) & 0xff000000UL) >> 24))
+#define SPL_PP_NTOHL(x) SPL_PP_HTONL(x)
+
+#endif /* BYTE_ORDER == BIG_ENDIAN */
+
+#ifdef __cplusplus
+/* *INDENT-OFF* */
+}
+/* *INDENT-ON* */
+#endif
+
+#endif /* __STACKX_DEF_H__ */