| /** @file |
| @brief 802.15.4 fragment handler |
| |
| This is not to be included by the application. |
| */ |
| |
| /* |
| * Copyright (c) 2016 Intel Corporation |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #ifndef __NET_IEEE802154_FRAGMENT_H__ |
| #define __NET_IEEE802154_FRAGMENT_H__ |
| |
| #include <misc/slist.h> |
| #include <stdint.h> |
| |
| #include <net/nbuf.h> |
| |
| /** |
| * @brief Fragment IPv6 packet as per RFC 6282 |
| * |
| * @details After IPv6 compression, transimission of IPv6 over 802.15.4 |
| * needs to be fragmented. Every fragment will have frgmentation header |
| * data size, data offset, data tag and payload. |
| * |
| * @param Pointer to network buffer |
| * @param Header difference between origianl IPv6 header and compressed header |
| * |
| * @return True in case of success, false otherwise |
| */ |
| bool ieee802154_fragment(struct net_buf *buf, int hdr_diff); |
| |
| /** |
| * @brief Reassemble 802.15.4 fragments as per RFC 6282 |
| * |
| * @details If the data does not fit into sinle fragment whole IPv6 packet |
| * comes in number of fragments. This funtion will reassemble them all as |
| * per data tag, data offset and data size. First packet is uncompressed |
| * immediately after reception. |
| * |
| * @param Pointer to network fragment, which gets updated to full reassembled |
| * packet when verdict is NET_CONTINUE |
| * |
| * @return NET_CONTINUE reassembly done, buf is complete |
| * NET_OK waiting for other fragments, |
| * NET_DROP invalid fragment. |
| */ |
| |
| enum net_verdict ieee802154_reassemble(struct net_buf *buf); |
| |
| #endif /* __NET_IEEE802154_FRAGMENT_H__ */ |
