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diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/external/lwip/src/include/lwip/raw.h b/thirdparty/nRF5_SDK_15.0.0_a53641a/external/lwip/src/include/lwip/raw.h
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+/**
+ * @file
+ * raw API (to be used from TCPIP thread)\n
+ * See also @ref raw_raw
+ */
+
+/*
+ * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * This file is part of the lwIP TCP/IP stack.
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ */
+#ifndef LWIP_HDR_RAW_H
+#define LWIP_HDR_RAW_H
+
+#include "lwip/opt.h"
+
+#if LWIP_RAW /* don't build if not configured for use in lwipopts.h */
+
+#include "lwip/pbuf.h"
+#include "lwip/def.h"
+#include "lwip/ip.h"
+#include "lwip/ip_addr.h"
+#include "lwip/ip6_addr.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct raw_pcb;
+
+/** Function prototype for raw pcb receive callback functions.
+ * @param arg user supplied argument (raw_pcb.recv_arg)
+ * @param pcb the raw_pcb which received data
+ * @param p the packet buffer that was received
+ * @param addr the remote IP address from which the packet was received
+ * @return 1 if the packet was 'eaten' (aka. deleted),
+ * 0 if the packet lives on
+ * If returning 1, the callback is responsible for freeing the pbuf
+ * if it's not used any more.
+ */
+typedef u8_t (*raw_recv_fn)(void *arg, struct raw_pcb *pcb, struct pbuf *p,
+ const ip_addr_t *addr);
+
+/** the RAW protocol control block */
+struct raw_pcb {
+ /* Common members of all PCB types */
+ IP_PCB;
+
+ struct raw_pcb *next;
+
+ u8_t protocol;
+
+ /** receive callback function */
+ raw_recv_fn recv;
+ /* user-supplied argument for the recv callback */
+ void *recv_arg;
+#if LWIP_IPV6
+ /* fields for handling checksum computations as per RFC3542. */
+ u16_t chksum_offset;
+ u8_t chksum_reqd;
+#endif
+};
+
+/* The following functions is the application layer interface to the
+ RAW code. */
+struct raw_pcb * raw_new (u8_t proto);
+struct raw_pcb * raw_new_ip_type(u8_t type, u8_t proto);
+void raw_remove (struct raw_pcb *pcb);
+err_t raw_bind (struct raw_pcb *pcb, const ip_addr_t *ipaddr);
+err_t raw_connect (struct raw_pcb *pcb, const ip_addr_t *ipaddr);
+
+err_t raw_sendto (struct raw_pcb *pcb, struct pbuf *p, const ip_addr_t *ipaddr);
+err_t raw_send (struct raw_pcb *pcb, struct pbuf *p);
+
+void raw_recv (struct raw_pcb *pcb, raw_recv_fn recv, void *recv_arg);
+
+/* The following functions are the lower layer interface to RAW. */
+u8_t raw_input (struct pbuf *p, struct netif *inp);
+#define raw_init() /* Compatibility define, no init needed. */
+
+void raw_netif_ip_addr_changed(const ip_addr_t* old_addr, const ip_addr_t* new_addr);
+
+/* for compatibility with older implementation */
+#define raw_new_ip6(proto) raw_new_ip_type(IPADDR_TYPE_V6, proto)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LWIP_RAW */
+
+#endif /* LWIP_HDR_RAW_H */