diff options
Diffstat (limited to 'sys/dev/pci/if_msk.c')
| -rw-r--r-- | sys/dev/pci/if_msk.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/sys/dev/pci/if_msk.c b/sys/dev/pci/if_msk.c index da5d602a5cf..da4d86ef1de 100644 --- a/sys/dev/pci/if_msk.c +++ b/sys/dev/pci/if_msk.c @@ -1,4 +1,4 @@ -/* $OpenBSD: if_msk.c,v 1.26 2006/11/25 16:26:17 brad Exp $ */ +/* $OpenBSD: if_msk.c,v 1.27 2006/12/06 23:34:45 reyk Exp $ */ /* * Copyright (c) 1997, 1998, 1999, 2000 @@ -1325,7 +1325,6 @@ mskc_attach(struct device *parent, struct device *self, void *aux) printf(" rev. %s", revstr); printf(" (0x%x): %s\n", sc->sk_rev, intrstr); - sc->sk_macs = 1; hw = sk_win_read_1(sc, SK_Y2_HWRES); @@ -1372,7 +1371,7 @@ msk_encap(struct sk_if_softc *sc_if, struct mbuf *m_head, u_int32_t *txidx) { struct sk_softc *sc = sc_if->sk_softc; struct msk_tx_desc *f = NULL; - u_int32_t frag, cur, cnt = 0; + u_int32_t frag, cur; int i; struct sk_txmap_entry *entry; bus_dmamap_t txmap; @@ -1404,6 +1403,12 @@ msk_encap(struct sk_if_softc *sc_if, struct mbuf *m_head, u_int32_t *txidx) return (ENOBUFS); } + if (txmap->dm_nsegs > (MSK_TX_RING_CNT - sc_if->sk_cdata.sk_tx_cnt - 2)) { + DPRINTFN(2, ("msk_encap: too few descriptors free\n")); + bus_dmamap_unload(sc->sc_dmatag, txmap); + return (ENOBUFS); + } + DPRINTFN(2, ("msk_encap: dm_nsegs=%d\n", txmap->dm_nsegs)); /* Sync the DMA map. */ @@ -1411,21 +1416,16 @@ msk_encap(struct sk_if_softc *sc_if, struct mbuf *m_head, u_int32_t *txidx) BUS_DMASYNC_PREWRITE); for (i = 0; i < txmap->dm_nsegs; i++) { - if ((MSK_TX_RING_CNT - (sc_if->sk_cdata.sk_tx_cnt + cnt)) < 2) { - DPRINTFN(2, ("msk_encap: too few descriptors free\n")); - return (ENOBUFS); - } f = &sc_if->sk_rdata->sk_tx_ring[frag]; f->sk_addr = htole32(txmap->dm_segs[i].ds_addr); f->sk_len = htole16(txmap->dm_segs[i].ds_len); f->sk_ctl = 0; - if (cnt == 0) + if (i == 0) f->sk_opcode = SK_Y2_TXOPC_PACKET; else f->sk_opcode = SK_Y2_TXOPC_BUFFER | SK_Y2_TXOPC_OWN; cur = frag; SK_INC(frag, MSK_TX_RING_CNT); - cnt++; } sc_if->sk_cdata.sk_tx_chain[cur].sk_mbuf = m_head; @@ -1444,7 +1444,7 @@ msk_encap(struct sk_if_softc *sc_if, struct mbuf *m_head, u_int32_t *txidx) MSK_CDTXSYNC(sc_if, *txidx, 1, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); - sc_if->sk_cdata.sk_tx_cnt += cnt; + sc_if->sk_cdata.sk_tx_cnt += txmap->dm_nsegs; #ifdef MSK_DEBUG if (mskdebug >= 2) { |