Free (GPLv2) TCP/IP stack developed by TASS Belgium
Dependents: lpc1768-picotcp-demo ZeroMQ_PicoTCP_Publisher_demo TCPSocket_HelloWorld_PicoTCP Pico_TCP_UDP_Test ... more
PicoTCP. Copyright (c) 2013 TASS Belgium NV.
Released under the GNU General Public License, version 2.
Different licensing models may exist, at the sole discretion of the Copyright holders.
Official homepage: http://www.picotcp.com
Bug tracker: https://github.com/tass-belgium/picotcp/issues
Development steps:
initial integration with mbed RTOSgeneric mbed Ethernet driverhigh performance NXP LPC1768 specific Ethernet driverMulti-threading support for mbed RTOSBerkeley sockets and integration with the New Socket APIFork of the apps running on top of the New Socket APIScheduling optimizations- Debugging/benchmarking/testing
Demo application (measuring TCP sender performance):
Import programlpc1768-picotcp-demo
A PicoTCP demo app testing the ethernet throughput on the lpc1768 mbed board.
stack/pico_frame.c@155:a70f34550c34, 2016-01-28 (annotated)
- Committer:
- tass
- Date:
- Thu Jan 28 15:12:00 2016 +0100
- Revision:
- 155:a70f34550c34
- Parent:
- 154:6c0e92a80c4a
Adding TCP flag for FIN.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
tass | 68:0847e35d08a6 | 1 | /********************************************************************* |
tass | 152:a3d286bf94e5 | 2 | PicoTCP. Copyright (c) 2012-2015 Altran Intelligent Systems. Some rights reserved. |
TASS Belgium NV |
131:4758606c9316 | 3 | See LICENSE and COPYING for usage. |
tass | 68:0847e35d08a6 | 4 | |
TASS Belgium NV |
131:4758606c9316 | 5 | . |
tass | 68:0847e35d08a6 | 6 | |
TASS Belgium NV |
131:4758606c9316 | 7 | Authors: Daniele Lacamera |
TASS Belgium NV |
131:4758606c9316 | 8 | *********************************************************************/ |
tass | 68:0847e35d08a6 | 9 | |
tass | 68:0847e35d08a6 | 10 | |
tass | 68:0847e35d08a6 | 11 | #include "pico_config.h" |
tass | 68:0847e35d08a6 | 12 | #include "pico_frame.h" |
tass | 152:a3d286bf94e5 | 13 | #include "pico_protocol.h" |
tass | 152:a3d286bf94e5 | 14 | #include "pico_stack.h" |
tass | 68:0847e35d08a6 | 15 | |
tass | 68:0847e35d08a6 | 16 | #ifdef PICO_SUPPORT_DEBUG_MEMORY |
tass | 68:0847e35d08a6 | 17 | static int n_frames_allocated; |
tass | 68:0847e35d08a6 | 18 | #endif |
tass | 68:0847e35d08a6 | 19 | |
tass | 68:0847e35d08a6 | 20 | /** frame alloc/dealloc/copy **/ |
tass | 68:0847e35d08a6 | 21 | void pico_frame_discard(struct pico_frame *f) |
tass | 68:0847e35d08a6 | 22 | { |
tass picotcp@tass.be | 149:5f4cb161cec3 | 23 | if (!f) |
tass picotcp@tass.be | 149:5f4cb161cec3 | 24 | return; |
tass picotcp@tass.be | 149:5f4cb161cec3 | 25 | |
TASS Belgium NV |
131:4758606c9316 | 26 | (*f->usage_count)--; |
tass | 154:6c0e92a80c4a | 27 | if (*f->usage_count == 0) { |
tass | 152:a3d286bf94e5 | 28 | if (f->flags & PICO_FRAME_FLAG_EXT_USAGE_COUNTER) |
tass | 152:a3d286bf94e5 | 29 | PICO_FREE(f->usage_count); |
tass | 152:a3d286bf94e5 | 30 | |
tass | 68:0847e35d08a6 | 31 | #ifdef PICO_SUPPORT_DEBUG_MEMORY |
TASS Belgium NV |
131:4758606c9316 | 32 | dbg("Discarded buffer @%p, caller: %p\n", f->buffer, __builtin_return_address(3)); |
TASS Belgium NV |
131:4758606c9316 | 33 | dbg("DEBUG MEMORY: %d frames in use.\n", --n_frames_allocated); |
tass | 68:0847e35d08a6 | 34 | #endif |
tass | 152:a3d286bf94e5 | 35 | if (!(f->flags & PICO_FRAME_FLAG_EXT_BUFFER)) |
tass | 152:a3d286bf94e5 | 36 | PICO_FREE(f->buffer); |
tass | 152:a3d286bf94e5 | 37 | else if (f->notify_free) |
tass | 152:a3d286bf94e5 | 38 | f->notify_free(f->buffer); |
tass | 152:a3d286bf94e5 | 39 | |
TASS Belgium NV |
131:4758606c9316 | 40 | if (f->info) |
tass picotcp@tass.be | 149:5f4cb161cec3 | 41 | PICO_FREE(f->info); |
TASS Belgium NV |
131:4758606c9316 | 42 | } |
TASS Belgium NV |
131:4758606c9316 | 43 | |
tass | 68:0847e35d08a6 | 44 | #ifdef PICO_SUPPORT_DEBUG_MEMORY |
TASS Belgium NV |
131:4758606c9316 | 45 | else { |
TASS Belgium NV |
131:4758606c9316 | 46 | dbg("Removed frame @%p(copy), usage count now: %d\n", f, *f->usage_count); |
TASS Belgium NV |
131:4758606c9316 | 47 | } |
tass | 68:0847e35d08a6 | 48 | #endif |
tass picotcp@tass.be | 149:5f4cb161cec3 | 49 | PICO_FREE(f); |
tass | 68:0847e35d08a6 | 50 | } |
tass | 68:0847e35d08a6 | 51 | |
tass | 68:0847e35d08a6 | 52 | struct pico_frame *pico_frame_copy(struct pico_frame *f) |
tass | 68:0847e35d08a6 | 53 | { |
tass picotcp@tass.be | 149:5f4cb161cec3 | 54 | struct pico_frame *new = PICO_ZALLOC(sizeof(struct pico_frame)); |
TASS Belgium NV |
131:4758606c9316 | 55 | if (!new) |
TASS Belgium NV |
131:4758606c9316 | 56 | return NULL; |
TASS Belgium NV |
131:4758606c9316 | 57 | |
TASS Belgium NV |
131:4758606c9316 | 58 | memcpy(new, f, sizeof(struct pico_frame)); |
TASS Belgium NV |
131:4758606c9316 | 59 | *(new->usage_count) += 1; |
tass | 68:0847e35d08a6 | 60 | #ifdef PICO_SUPPORT_DEBUG_MEMORY |
TASS Belgium NV |
131:4758606c9316 | 61 | dbg("Copied frame @%p, into %p, usage count now: %d\n", f, new, *new->usage_count); |
tass | 68:0847e35d08a6 | 62 | #endif |
TASS Belgium NV |
131:4758606c9316 | 63 | new->next = NULL; |
TASS Belgium NV |
131:4758606c9316 | 64 | return new; |
tass | 68:0847e35d08a6 | 65 | } |
tass | 68:0847e35d08a6 | 66 | |
tass | 68:0847e35d08a6 | 67 | |
tass | 152:a3d286bf94e5 | 68 | static struct pico_frame *pico_frame_do_alloc(uint32_t size, int zerocopy, int ext_buffer) |
tass | 68:0847e35d08a6 | 69 | { |
tass picotcp@tass.be | 149:5f4cb161cec3 | 70 | struct pico_frame *p = PICO_ZALLOC(sizeof(struct pico_frame)); |
tass | 152:a3d286bf94e5 | 71 | uint32_t frame_buffer_size = size; |
TASS Belgium NV |
131:4758606c9316 | 72 | if (!p) |
TASS Belgium NV |
131:4758606c9316 | 73 | return NULL; |
TASS Belgium NV |
131:4758606c9316 | 74 | |
tass | 152:a3d286bf94e5 | 75 | if (ext_buffer && !zerocopy) { |
tass | 152:a3d286bf94e5 | 76 | /* external buffer implies zerocopy flag! */ |
tass | 152:a3d286bf94e5 | 77 | PICO_FREE(p); |
tass | 152:a3d286bf94e5 | 78 | return NULL; |
tass | 152:a3d286bf94e5 | 79 | } |
tass | 152:a3d286bf94e5 | 80 | |
tass picotcp@tass.be | 149:5f4cb161cec3 | 81 | if (!zerocopy) { |
tass | 152:a3d286bf94e5 | 82 | unsigned int align = size % sizeof(uint32_t); |
tass | 152:a3d286bf94e5 | 83 | /* Ensure that usage_count starts on an aligned address */ |
tass | 152:a3d286bf94e5 | 84 | if (align) { |
tass | 152:a3d286bf94e5 | 85 | frame_buffer_size += (uint32_t)sizeof(uint32_t) - align; |
tass | 152:a3d286bf94e5 | 86 | } |
tass | 152:a3d286bf94e5 | 87 | |
tass | 152:a3d286bf94e5 | 88 | p->buffer = PICO_ZALLOC(frame_buffer_size + sizeof(uint32_t)); |
tass picotcp@tass.be | 149:5f4cb161cec3 | 89 | if (!p->buffer) { |
tass picotcp@tass.be | 149:5f4cb161cec3 | 90 | PICO_FREE(p); |
tass picotcp@tass.be | 149:5f4cb161cec3 | 91 | return NULL; |
tass picotcp@tass.be | 149:5f4cb161cec3 | 92 | } |
tass | 152:a3d286bf94e5 | 93 | |
tass | 152:a3d286bf94e5 | 94 | p->usage_count = (uint32_t *)(((uint8_t*)p->buffer) + frame_buffer_size); |
tass picotcp@tass.be | 149:5f4cb161cec3 | 95 | } else { |
tass picotcp@tass.be | 149:5f4cb161cec3 | 96 | p->buffer = NULL; |
tass | 152:a3d286bf94e5 | 97 | p->flags |= PICO_FRAME_FLAG_EXT_USAGE_COUNTER; |
tass | 152:a3d286bf94e5 | 98 | p->usage_count = PICO_ZALLOC(sizeof(uint32_t)); |
tass | 152:a3d286bf94e5 | 99 | if (!p->usage_count) { |
tass | 152:a3d286bf94e5 | 100 | PICO_FREE(p); |
tass | 152:a3d286bf94e5 | 101 | return NULL; |
tass | 152:a3d286bf94e5 | 102 | } |
TASS Belgium NV |
131:4758606c9316 | 103 | } |
TASS Belgium NV |
131:4758606c9316 | 104 | |
TASS Belgium NV |
131:4758606c9316 | 105 | |
TASS Belgium NV |
131:4758606c9316 | 106 | p->buffer_len = size; |
tass | 68:0847e35d08a6 | 107 | |
TASS Belgium NV |
131:4758606c9316 | 108 | /* By default, frame content is the full buffer. */ |
TASS Belgium NV |
131:4758606c9316 | 109 | p->start = p->buffer; |
TASS Belgium NV |
131:4758606c9316 | 110 | p->len = p->buffer_len; |
TASS Belgium NV |
131:4758606c9316 | 111 | *p->usage_count = 1; |
tass | 152:a3d286bf94e5 | 112 | |
tass | 152:a3d286bf94e5 | 113 | if (ext_buffer) |
tass | 152:a3d286bf94e5 | 114 | p->flags |= PICO_FRAME_FLAG_EXT_BUFFER; |
tass | 152:a3d286bf94e5 | 115 | |
tass | 68:0847e35d08a6 | 116 | #ifdef PICO_SUPPORT_DEBUG_MEMORY |
tass | 68:0847e35d08a6 | 117 | dbg("Allocated buffer @%p, len= %d caller: %p\n", p->buffer, p->buffer_len, __builtin_return_address(2)); |
tass | 68:0847e35d08a6 | 118 | dbg("DEBUG MEMORY: %d frames in use.\n", ++n_frames_allocated); |
tass | 68:0847e35d08a6 | 119 | #endif |
TASS Belgium NV |
131:4758606c9316 | 120 | return p; |
tass | 68:0847e35d08a6 | 121 | } |
tass | 68:0847e35d08a6 | 122 | |
tass picotcp@tass.be | 149:5f4cb161cec3 | 123 | struct pico_frame *pico_frame_alloc(uint32_t size) |
tass picotcp@tass.be | 149:5f4cb161cec3 | 124 | { |
tass | 152:a3d286bf94e5 | 125 | return pico_frame_do_alloc(size, 0, 0); |
tass picotcp@tass.be | 149:5f4cb161cec3 | 126 | } |
tass picotcp@tass.be | 149:5f4cb161cec3 | 127 | |
tass | 152:a3d286bf94e5 | 128 | int pico_frame_grow(struct pico_frame *f, uint32_t size) |
tass picotcp@tass.be | 149:5f4cb161cec3 | 129 | { |
tass | 152:a3d286bf94e5 | 130 | uint8_t *oldbuf; |
tass | 152:a3d286bf94e5 | 131 | uint32_t usage_count, *p_old_usage; |
tass | 152:a3d286bf94e5 | 132 | uint32_t frame_buffer_size; |
tass | 152:a3d286bf94e5 | 133 | uint32_t oldsize; |
tass | 152:a3d286bf94e5 | 134 | unsigned int align; |
tass | 152:a3d286bf94e5 | 135 | int addr_diff = 0; |
tass | 152:a3d286bf94e5 | 136 | |
tass | 152:a3d286bf94e5 | 137 | if (!f || (size < f->buffer_len)) { |
tass | 152:a3d286bf94e5 | 138 | return -1; |
tass | 152:a3d286bf94e5 | 139 | } |
tass | 152:a3d286bf94e5 | 140 | |
tass | 152:a3d286bf94e5 | 141 | align = size % sizeof(uint32_t); |
tass | 152:a3d286bf94e5 | 142 | frame_buffer_size = size; |
tass | 152:a3d286bf94e5 | 143 | if (align) { |
tass | 152:a3d286bf94e5 | 144 | frame_buffer_size += (uint32_t)sizeof(uint32_t) - align; |
tass | 152:a3d286bf94e5 | 145 | } |
tass | 152:a3d286bf94e5 | 146 | |
tass | 152:a3d286bf94e5 | 147 | oldbuf = f->buffer; |
tass | 152:a3d286bf94e5 | 148 | oldsize = f->buffer_len; |
tass | 152:a3d286bf94e5 | 149 | usage_count = *(f->usage_count); |
tass | 152:a3d286bf94e5 | 150 | p_old_usage = f->usage_count; |
tass | 152:a3d286bf94e5 | 151 | f->buffer = PICO_ZALLOC(frame_buffer_size + sizeof(uint32_t)); |
tass | 152:a3d286bf94e5 | 152 | if (!f->buffer) { |
tass | 152:a3d286bf94e5 | 153 | f->buffer = oldbuf; |
tass | 152:a3d286bf94e5 | 154 | return -1; |
tass | 152:a3d286bf94e5 | 155 | } |
tass | 152:a3d286bf94e5 | 156 | |
tass | 152:a3d286bf94e5 | 157 | f->usage_count = (uint32_t *)(((uint8_t*)f->buffer) + frame_buffer_size); |
tass | 152:a3d286bf94e5 | 158 | *f->usage_count = usage_count; |
tass | 152:a3d286bf94e5 | 159 | f->buffer_len = size; |
tass | 152:a3d286bf94e5 | 160 | memcpy(f->buffer, oldbuf, oldsize); |
tass | 152:a3d286bf94e5 | 161 | |
tass | 152:a3d286bf94e5 | 162 | /* Update hdr fields to new buffer*/ |
tass | 152:a3d286bf94e5 | 163 | addr_diff = (int)(f->buffer - oldbuf); |
tass | 152:a3d286bf94e5 | 164 | f->net_hdr += addr_diff; |
tass | 152:a3d286bf94e5 | 165 | f->datalink_hdr += addr_diff; |
tass | 152:a3d286bf94e5 | 166 | f->transport_hdr += addr_diff; |
tass | 152:a3d286bf94e5 | 167 | f->app_hdr += addr_diff; |
tass | 152:a3d286bf94e5 | 168 | f->start += addr_diff; |
tass | 152:a3d286bf94e5 | 169 | f->payload += addr_diff; |
tass | 152:a3d286bf94e5 | 170 | |
tass | 152:a3d286bf94e5 | 171 | if (f->flags & PICO_FRAME_FLAG_EXT_USAGE_COUNTER) |
tass | 152:a3d286bf94e5 | 172 | PICO_FREE(p_old_usage); |
tass | 152:a3d286bf94e5 | 173 | |
tass | 152:a3d286bf94e5 | 174 | if (!(f->flags & PICO_FRAME_FLAG_EXT_BUFFER)) |
tass | 152:a3d286bf94e5 | 175 | PICO_FREE(oldbuf); |
tass | 152:a3d286bf94e5 | 176 | else if (f->notify_free) |
tass | 152:a3d286bf94e5 | 177 | f->notify_free(oldbuf); |
tass | 152:a3d286bf94e5 | 178 | |
tass | 152:a3d286bf94e5 | 179 | f->flags = 0; |
tass | 152:a3d286bf94e5 | 180 | /* Now, the frame is not zerocopy anymore, and the usage counter has been moved within it */ |
tass | 152:a3d286bf94e5 | 181 | return 0; |
tass | 152:a3d286bf94e5 | 182 | } |
tass | 152:a3d286bf94e5 | 183 | |
tass | 152:a3d286bf94e5 | 184 | struct pico_frame *pico_frame_alloc_skeleton(uint32_t size, int ext_buffer) |
tass | 152:a3d286bf94e5 | 185 | { |
tass | 152:a3d286bf94e5 | 186 | return pico_frame_do_alloc(size, 1, ext_buffer); |
tass picotcp@tass.be | 149:5f4cb161cec3 | 187 | } |
tass picotcp@tass.be | 149:5f4cb161cec3 | 188 | |
tass picotcp@tass.be | 149:5f4cb161cec3 | 189 | int pico_frame_skeleton_set_buffer(struct pico_frame *f, void *buf) |
tass picotcp@tass.be | 149:5f4cb161cec3 | 190 | { |
tass picotcp@tass.be | 149:5f4cb161cec3 | 191 | if (!buf) |
tass picotcp@tass.be | 149:5f4cb161cec3 | 192 | return -1; |
tass picotcp@tass.be | 149:5f4cb161cec3 | 193 | |
tass picotcp@tass.be | 149:5f4cb161cec3 | 194 | f->buffer = (uint8_t *) buf; |
tass picotcp@tass.be | 149:5f4cb161cec3 | 195 | f->start = f->buffer; |
tass picotcp@tass.be | 149:5f4cb161cec3 | 196 | return 0; |
tass picotcp@tass.be | 149:5f4cb161cec3 | 197 | } |
tass picotcp@tass.be | 149:5f4cb161cec3 | 198 | |
tass | 68:0847e35d08a6 | 199 | struct pico_frame *pico_frame_deepcopy(struct pico_frame *f) |
tass | 68:0847e35d08a6 | 200 | { |
TASS Belgium NV |
131:4758606c9316 | 201 | struct pico_frame *new = pico_frame_alloc(f->buffer_len); |
TASS Belgium NV |
131:4758606c9316 | 202 | int addr_diff; |
TASS Belgium NV |
131:4758606c9316 | 203 | unsigned char *buf; |
TASS Belgium NV |
131:4758606c9316 | 204 | uint32_t *uc; |
TASS Belgium NV |
131:4758606c9316 | 205 | if (!new) |
TASS Belgium NV |
131:4758606c9316 | 206 | return NULL; |
tass | 68:0847e35d08a6 | 207 | |
TASS Belgium NV |
131:4758606c9316 | 208 | /* Save the two key pointers... */ |
TASS Belgium NV |
131:4758606c9316 | 209 | buf = new->buffer; |
TASS Belgium NV |
131:4758606c9316 | 210 | uc = new->usage_count; |
tass | 68:0847e35d08a6 | 211 | |
TASS Belgium NV |
131:4758606c9316 | 212 | /* Overwrite all fields with originals */ |
TASS Belgium NV |
131:4758606c9316 | 213 | memcpy(new, f, sizeof(struct pico_frame)); |
tass | 68:0847e35d08a6 | 214 | |
TASS Belgium NV |
131:4758606c9316 | 215 | /* ...restore the two key pointers */ |
TASS Belgium NV |
131:4758606c9316 | 216 | new->buffer = buf; |
TASS Belgium NV |
131:4758606c9316 | 217 | new->usage_count = uc; |
tass | 68:0847e35d08a6 | 218 | |
TASS Belgium NV |
131:4758606c9316 | 219 | /* Update in-buffer pointers with offset */ |
TASS Belgium NV |
131:4758606c9316 | 220 | addr_diff = (int)(new->buffer - f->buffer); |
tass | 152:a3d286bf94e5 | 221 | new->datalink_hdr += addr_diff; |
TASS Belgium NV |
131:4758606c9316 | 222 | new->net_hdr += addr_diff; |
TASS Belgium NV |
131:4758606c9316 | 223 | new->transport_hdr += addr_diff; |
TASS Belgium NV |
131:4758606c9316 | 224 | new->app_hdr += addr_diff; |
TASS Belgium NV |
131:4758606c9316 | 225 | new->start += addr_diff; |
TASS Belgium NV |
131:4758606c9316 | 226 | new->payload += addr_diff; |
tass | 68:0847e35d08a6 | 227 | |
tass | 68:0847e35d08a6 | 228 | #ifdef PICO_SUPPORT_DEBUG_MEMORY |
TASS Belgium NV |
131:4758606c9316 | 229 | dbg("Deep-Copied frame @%p, into %p, usage count now: %d\n", f, new, *new->usage_count); |
tass | 68:0847e35d08a6 | 230 | #endif |
TASS Belgium NV |
131:4758606c9316 | 231 | new->next = NULL; |
TASS Belgium NV |
131:4758606c9316 | 232 | return new; |
tass | 68:0847e35d08a6 | 233 | } |
tass | 68:0847e35d08a6 | 234 | |
tass | 152:a3d286bf94e5 | 235 | |
tass | 152:a3d286bf94e5 | 236 | static inline uint32_t pico_checksum_adder(uint32_t sum, void *data, uint32_t len) |
tass | 152:a3d286bf94e5 | 237 | { |
tass | 152:a3d286bf94e5 | 238 | uint16_t *buf = (uint16_t *)data; |
tass | 152:a3d286bf94e5 | 239 | uint16_t *stop; |
tass | 152:a3d286bf94e5 | 240 | |
tass | 152:a3d286bf94e5 | 241 | if (len & 0x01) { |
tass | 152:a3d286bf94e5 | 242 | --len; |
tass | 152:a3d286bf94e5 | 243 | #ifdef PICO_BIGENDIAN |
tass | 152:a3d286bf94e5 | 244 | sum += (((uint8_t *)data)[len]) << 8; |
tass | 152:a3d286bf94e5 | 245 | #else |
tass | 152:a3d286bf94e5 | 246 | sum += ((uint8_t *)data)[len]; |
tass | 152:a3d286bf94e5 | 247 | #endif |
tass | 152:a3d286bf94e5 | 248 | } |
tass | 152:a3d286bf94e5 | 249 | |
tass | 152:a3d286bf94e5 | 250 | stop = (uint16_t *)(((uint8_t *)data) + len); |
tass | 152:a3d286bf94e5 | 251 | |
tass | 152:a3d286bf94e5 | 252 | while (buf < stop) { |
tass | 152:a3d286bf94e5 | 253 | sum += *buf++; |
tass | 152:a3d286bf94e5 | 254 | } |
tass | 152:a3d286bf94e5 | 255 | return sum; |
tass | 152:a3d286bf94e5 | 256 | } |
tass | 152:a3d286bf94e5 | 257 | |
tass | 152:a3d286bf94e5 | 258 | static inline uint16_t pico_checksum_finalize(uint32_t sum) |
tass | 152:a3d286bf94e5 | 259 | { |
tass | 152:a3d286bf94e5 | 260 | while (sum >> 16) { /* a second carry is possible! */ |
tass | 152:a3d286bf94e5 | 261 | sum = (sum & 0x0000FFFF) + (sum >> 16); |
tass | 152:a3d286bf94e5 | 262 | } |
tass | 152:a3d286bf94e5 | 263 | return short_be((uint16_t) ~sum); |
tass | 152:a3d286bf94e5 | 264 | } |
tass | 152:a3d286bf94e5 | 265 | |
tass | 68:0847e35d08a6 | 266 | /** |
tass | 68:0847e35d08a6 | 267 | * Calculate checksum of a given string |
tass | 68:0847e35d08a6 | 268 | */ |
tass | 70:cd218dd180e5 | 269 | uint16_t pico_checksum(void *inbuf, uint32_t len) |
tass | 68:0847e35d08a6 | 270 | { |
tass | 152:a3d286bf94e5 | 271 | uint32_t sum; |
tass | 68:0847e35d08a6 | 272 | |
tass | 152:a3d286bf94e5 | 273 | sum = pico_checksum_adder(0, inbuf, len); |
tass | 152:a3d286bf94e5 | 274 | return pico_checksum_finalize(sum); |
tass | 68:0847e35d08a6 | 275 | } |
tass | 68:0847e35d08a6 | 276 | |
tass | 152:a3d286bf94e5 | 277 | /* WARNING: len1 MUST be an EVEN number */ |
tass | 70:cd218dd180e5 | 278 | uint16_t pico_dualbuffer_checksum(void *inbuf1, uint32_t len1, void *inbuf2, uint32_t len2) |
tass | 68:0847e35d08a6 | 279 | { |
tass | 152:a3d286bf94e5 | 280 | uint32_t sum; |
TASS Belgium NV |
131:4758606c9316 | 281 | |
tass | 152:a3d286bf94e5 | 282 | sum = pico_checksum_adder(0, inbuf1, len1); |
tass | 152:a3d286bf94e5 | 283 | sum = pico_checksum_adder(sum, inbuf2, len2); |
tass | 152:a3d286bf94e5 | 284 | return pico_checksum_finalize(sum); |
tass | 68:0847e35d08a6 | 285 | } |
tass | 68:0847e35d08a6 | 286 |