Prvni ulozeni z chegewara githubu

tools/sdk/esp32/include/newlib/platform_include/net/if.h

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+// Copyright 2018 Espressif Systems (Shanghai) PTE 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 _ESP_PLATFORM_NET_IF_H_
+#define _ESP_PLATFORM_NET_IF_H_
+
+#include "lwip/sockets.h"
+#include "lwip/if_api.h"
+
+#define	MSG_DONTROUTE   0x4     /* send without using routing tables */
+#define	SOCK_SEQPACKET  5       /* sequenced packet stream */
+#define	MSG_EOR         0x8     /* data completes record */
+#define	SOCK_SEQPACKET  5       /* sequenced packet stream */
+#define	SOMAXCONN       128
+
+#define	IPV6_UNICAST_HOPS   4  /* int; IP6 hops */
+
+#define	NI_MAXHOST  1025
+#define	NI_MAXSERV  32
+#define	NI_NUMERICSERV  0x00000008
+#define	NI_DGRAM        0x00000010
+
+typedef u32_t socklen_t;
+
+
+unsigned int if_nametoindex(const char *ifname);
+
+char *if_indextoname(unsigned int ifindex, char *ifname);
+
+#endif // _ESP_PLATFORM_NET_IF_H_