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Fix TX bug: when using TCP/IP checksum offload on TX, we tell the chip

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we want the checksums calculated on a per-packet basis using control bits
in the extsts field of the DMA descriptor structure. For TX, the chip
seems to want these bits set in the field of the first descriptor in
a fragment chain, not the last.
This commit is contained in:
Bill Paul 2001-06-15 18:43:19 +00:00
parent cf5e44f88e
commit 1bacd83aea
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=78286
1 changed files with 4 additions and 4 deletions
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8
sys/dev/nge/if_nge.c
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@ -1546,16 +1546,16 @@ static int nge_encap(sc, m_head, txidx)
if (m != NULL)
return(ENOBUFS);
sc->nge_ldata->nge_tx_list[cur].nge_extsts = 0;
sc->nge_ldata->nge_tx_list[*txidx].nge_extsts = 0;
if (m_head->m_pkthdr.csum_flags) {
if (m_head->m_pkthdr.csum_flags & CSUM_IP)
sc->nge_ldata->nge_tx_list[cur].nge_extsts |=
sc->nge_ldata->nge_tx_list[*txidx].nge_extsts |=
NGE_TXEXTSTS_IPCSUM;
if (m_head->m_pkthdr.csum_flags & CSUM_TCP)
sc->nge_ldata->nge_tx_list[cur].nge_extsts |=
sc->nge_ldata->nge_tx_list[*txidx].nge_extsts |=
NGE_TXEXTSTS_TCPCSUM;
if (m_head->m_pkthdr.csum_flags & CSUM_UDP)
sc->nge_ldata->nge_tx_list[cur].nge_extsts |=
sc->nge_ldata->nge_tx_list[*txidx].nge_extsts |=
NGE_TXEXTSTS_UDPCSUM;
}