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authorNathan Binkert <nate@cvs.openbsd.org>2002-04-28 20:46:39 +0000
committerNathan Binkert <nate@cvs.openbsd.org>2002-04-28 20:46:39 +0000
commite08fb0ff38dd899f1f9cd46d1bf47cad4dbc6ca2 (patch)
tree8730ec4e413f26044f085a2c9786f2585c5e35d2 /sys/dev/pci
parentd25e405bd1346d7760d9b0e2678c4ddde2826e80 (diff)
Re-do the way that bus_dma is done for transmit. Loop over the dm_segs
instead of looping over the mbuf. This fixes some problems seen related to IP fragments containing bogus data in them.
Diffstat (limited to 'sys/dev/pci')
-rw-r--r--sys/dev/pci/if_gx.c12
1 files changed, 4 insertions, 8 deletions
diff --git a/sys/dev/pci/if_gx.c b/sys/dev/pci/if_gx.c
index 4b8363d1755..8aede0e56ac 100644
--- a/sys/dev/pci/if_gx.c
+++ b/sys/dev/pci/if_gx.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: if_gx.c,v 1.4 2002/04/26 04:36:38 nate Exp $ */
+/* $OpenBSD: if_gx.c,v 1.5 2002/04/28 20:46:38 nate Exp $ */
/*-
* Copyright (c) 1999,2000,2001 Jonathan Lemon
* All rights reserved.
@@ -1710,7 +1710,6 @@ gx_encap(struct gx_softc *gx, struct mbuf *m_head)
#ifdef notyet
struct gx_tx_desc_ctx *tctx;
#endif
- struct mbuf *m;
bus_dmamap_t txmap;
int i = 0;
int idx, cnt, /*csumopts, */ txcontext;
@@ -1784,10 +1783,7 @@ context_done:
if (bus_dmamap_load_mbuf(gx->gx_dmatag, txmap, m_head, BUS_DMA_NOWAIT))
return(ENOBUFS);
- for (m = m_head; m != NULL; m = m->m_next) {
- if (m->m_len == 0)
- continue;
-
+ for (i = 0; i < txmap->dm_nsegs; i++) {
if (cnt == GX_TX_RING_CNT) {
printf("%s: overflow(2): %d, %d\n", cnt,
GX_TX_RING_CNT, gx->gx_dev.dv_xname);
@@ -1795,9 +1791,9 @@ context_done:
}
tx = (struct gx_tx_desc_data *)&gx->gx_rdata->gx_tx_ring[idx];
- tx->tx_addr = txmap->dm_segs[i++].ds_addr;
+ tx->tx_addr = txmap->dm_segs[i].ds_addr;
tx->tx_status = 0;
- tx->tx_len = m->m_len;
+ tx->tx_len = txmap->dm_segs[i].ds_len;
#ifdef notyet
if (gx->arpcom.ac_if.if_hwassist) {
tx->tx_type = 1;