layer2: update comments, use constant
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8aacbaf8c3
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@ -51,7 +51,7 @@ result_t layer2_tx_fill_packet_queue(layer2_tx_t *ctx)
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header.tx_request = 0;
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while(packet_queue_get_free_space(&ctx->packet_queue) > 0) {
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int ret = poll(&pfd, 1, 0);
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int ret = poll(&pfd, 1, 0 /* timeout */);
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if(ret < 0) {
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LOG(LVL_ERR, "poll: %s", strerror(errno));
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return ERR_SYSCALL;
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@ -75,7 +75,7 @@ result_t layer2_tx_fill_packet_queue(layer2_tx_t *ctx)
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free(packetbuf);
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return ERR_SYSCALL;
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} else if(ret == 0) {
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// no more data
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// no more data, should not happen
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free(packetbuf);
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break;
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}
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@ -128,7 +128,7 @@ size_t layer2_tx_encode_next_packet(layer2_tx_t *ctx, uint8_t ack_seq_nr, uint8_
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unsigned int crc_size = crc_sizeof_key(PAYLOAD_CRC_SCHEME);
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assert(buf_len >= 18 + crc_size + entry->data_len);
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assert(buf_len >= LAYER2_PACKET_HEADER_ENCODED_SIZE_MAX + crc_size + entry->data_len);
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layer2_packet_header_t header = entry->header;
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header.rx_seq_nr = ack_seq_nr;
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