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- Fix a bug in the TSO transmit routine where frames which had

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been defragged and had their headers in the same cluster as their
payload would be fed to the NIC in header-sized chunks, and would
likely exceed the number of available transmit descriptors.

- If a TSO frame exceeds the number of available transmit descriptors,
don't leak busdmma resources when freeing it.

Sponsored by: Myricom Inc.
This commit is contained in:
Andrew Gallatin 2007-04-03 10:41:33 +00:00
parent 329d3aa320
commit e39a0a37cf
1 changed files with 3 additions and 1 deletions
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4
sys/dev/mxge/if_mxge.c
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@ -1446,10 +1446,11 @@ mxge_encap_tso(mxge_softc_t *sc, struct mbuf *m, int busdma_seg_cnt)
/* Break the busdma segment up into pieces*/
low = MXGE_LOWPART_TO_U32(seg->ds_addr);
high_swapped = htobe32(MXGE_HIGHPART_TO_U32(seg->ds_addr));
len = seglen = seg->ds_len;
len = seg->ds_len;
while (len) {
flags_next = flags & ~MXGEFW_FLAGS_FIRST;
seglen = len;
cum_len_next = cum_len + seglen;
(req-rdma_count)->rdma_count = rdma_count + 1;
if (__predict_true(cum_len >= 0)) {
@ -1514,6 +1515,7 @@ mxge_encap_tso(mxge_softc_t *sc, struct mbuf *m, int busdma_seg_cnt)
return;
drop:
bus_dmamap_unload(tx->dmat, tx->info[tx->req & tx->mask].map);
m_freem(m);
sc->ifp->if_oerrors++;
if (!once) {