132 lines
3.5 KiB
C
132 lines
3.5 KiB
C
/*********************************************************************
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PicoTCP. Copyright (c) 2012-2017 Altran Intelligent Systems. Some rights reserved.
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See COPYING, LICENSE.GPLv2 and LICENSE.GPLv3 for usage.
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*********************************************************************/
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#ifndef INCLUDE_PICO_FRAME
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#define INCLUDE_PICO_FRAME
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#include "pico_config.h"
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#define PICO_FRAME_FLAG_BCAST (0x01)
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#define PICO_FRAME_FLAG_EXT_BUFFER (0x02)
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#define PICO_FRAME_FLAG_EXT_USAGE_COUNTER (0x04)
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#define PICO_FRAME_FLAG_SACKED (0x80)
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#define PICO_FRAME_FLAG_LL_SEC (0x40)
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#define PICO_FRAME_FLAG_SLP_FRAG (0x20)
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#define IS_BCAST(f) ((f->flags & PICO_FRAME_FLAG_BCAST) == PICO_FRAME_FLAG_BCAST)
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struct pico_socket;
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struct pico_frame {
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/* Connector for queues */
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struct pico_frame *next;
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/* Start of the whole buffer, total frame length. */
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unsigned char *buffer;
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uint32_t buffer_len;
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/* For outgoing packets: this is the meaningful buffer. */
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unsigned char *start;
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uint32_t len;
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/* Pointer to usage counter */
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uint32_t *usage_count;
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/* Pointer to protocol headers */
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uint8_t *datalink_hdr;
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uint8_t *net_hdr;
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uint16_t net_len;
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uint8_t *transport_hdr;
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uint16_t transport_len;
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uint8_t *app_hdr;
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uint16_t app_len;
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/* Pointer to the phisical device this packet belongs to.
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* Should be valid in both routing directions
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*/
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struct pico_device *dev;
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pico_time timestamp;
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/* Failures due to bad datalink addressing. */
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uint16_t failure_count;
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/* Protocol over IP */
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uint8_t proto;
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/* PICO_FRAME_FLAG_* */
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uint8_t flags;
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/* Pointer to payload */
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unsigned char *payload;
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uint16_t payload_len;
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#if defined(PICO_SUPPORT_IPV4FRAG) || defined(PICO_SUPPORT_IPV6FRAG)
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/* Payload fragmentation info */
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uint16_t frag;
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#endif
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#if defined(PICO_SUPPORT_6LOWPAN)
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uint32_t hash;
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union pico_ll_addr src;
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union pico_ll_addr dst;
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#endif
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/* Pointer to socket */
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struct pico_socket *sock;
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/* Pointer to transport info, used to store remote UDP endpoint (IP + port) */
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void *info;
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/*Priority. "best-effort" priority, the default value is 0. Priority can be in between -10 and +10*/
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int8_t priority;
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uint8_t transport_flags_saved;
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/* Callback to notify listener when the buffer has been discarded */
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void (*notify_free)(uint8_t *);
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uint8_t send_ttl; /* Special TTL/HOPS value, 0 = auto assign */
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uint8_t send_tos; /* Type of service */
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};
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/** frame alloc/dealloc/copy **/
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void pico_frame_discard(struct pico_frame *f);
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struct pico_frame *pico_frame_copy(struct pico_frame *f);
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struct pico_frame *pico_frame_deepcopy(struct pico_frame *f);
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struct pico_frame *pico_frame_alloc(uint32_t size);
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int pico_frame_grow(struct pico_frame *f, uint32_t size);
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int pico_frame_grow_head(struct pico_frame *f, uint32_t size);
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struct pico_frame *pico_frame_alloc_skeleton(uint32_t size, int ext_buffer);
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int pico_frame_skeleton_set_buffer(struct pico_frame *f, void *buf);
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uint16_t pico_checksum(void *inbuf, uint32_t len);
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uint16_t pico_dualbuffer_checksum(void *b1, uint32_t len1, void *b2, uint32_t len2);
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static inline int pico_is_digit(char c)
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{
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if (c < '0' || c > '9')
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return 0;
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return 1;
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}
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static inline int pico_is_hex(char c)
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{
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if (c >= '0' && c <= '9')
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return 1;
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if (c >= 'a' && c <= 'f')
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return 1;
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if (c >= 'A' && c <= 'F')
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return 1;
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return 0;
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}
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#endif
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