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net: Fix a couple of large TCP segment issues #101

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merged 2 commits into from
Nov 4, 2013
Merged

net: Fix a couple of large TCP segment issues #101

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692cbd1
lwip: Fix invalid checksum bug
adamgreen Oct 8, 2013
64620e2
lwip: Stop dropping long TCP segments
adamgreen Oct 27, 2013
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2 changes: 1 addition & 1 deletion libraries/net/eth/lwip-eth/arch/lpc_emac_config.h
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Original file line number Diff line number Diff line change
Expand Up @@ -86,7 +86,7 @@ extern "C"
/** \brief Defines the number of descriptors used for TX. Must
* be a minimum value of 2.
*/
#define LPC_NUM_BUFF_TXDESCS 3
#define LPC_NUM_BUFF_TXDESCS (TCP_SND_QUEUELEN + 1)

/** \brief Set this define to 1 to enable bounce buffers for transmit pbufs
* that cannot be sent via the zero-copy method. Some chained pbufs
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3 changes: 3 additions & 0 deletions libraries/net/lwip/lwip/core/tcp_out.c
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Expand Up @@ -646,6 +646,9 @@ tcp_write(struct tcp_pcb *pcb, const void *arg, u16_t len, u8_t apiflags)
last_unsent->len += concat_p->tot_len;
#if TCP_CHECKSUM_ON_COPY
if (concat_chksummed) {
if (concat_chksum_swapped) {
concat_chksum = SWAP_BYTES_IN_WORD(concat_chksum);
}
tcp_seg_add_chksum(concat_chksum, concat_chksummed, &last_unsent->chksum,
&last_unsent->chksum_swapped);
last_unsent->flags |= TF_SEG_DATA_CHECKSUMMED;
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