diff options
| author | wpaul <wpaul@FreeBSD.org> | 1999-04-29 16:27:51 +0000 |
|---|---|---|
| committer | wpaul <wpaul@FreeBSD.org> | 1999-04-29 16:27:51 +0000 |
| commit | 7d47725500cdad61cb85ec5b9274d772e56159e6 (patch) | |
| tree | 69961fa2a5f6ad7cad0b70f0ed530b94ca02fd4b /sys/pci/if_ti.c | |
| parent | ddb28a558c400ea61fe8f37c1b0216e567949406 (diff) | |
| download | FreeBSD-src-7d47725500cdad61cb85ec5b9274d772e56159e6.zip FreeBSD-src-7d47725500cdad61cb85ec5b9274d772e56159e6.tar.gz | |
Add a test to ti_encap() to try and prevent the transmit producer index
from ever catching up to the transmit consumer index. We can't let this
happen because ti_txeof() depends on the assumption that producer == consumer
means the ring is empty, and producer != consumer means the ring has some
number of active descriptors in it.
Diffstat (limited to 'sys/pci/if_ti.c')
| -rw-r--r-- | sys/pci/if_ti.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/sys/pci/if_ti.c b/sys/pci/if_ti.c index 297cbc0..212f345 100644 --- a/sys/pci/if_ti.c +++ b/sys/pci/if_ti.c @@ -29,7 +29,7 @@ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. * - * $Id: if_ti.c,v 1.2 1999/04/06 22:56:21 wpaul Exp $ + * $Id: if_ti.c,v 1.109 1999/04/29 16:22:07 wpaul Exp $ */ /* @@ -128,7 +128,7 @@ #if !defined(lint) static const char rcsid[] = - "$Id: if_ti.c,v 1.2 1999/04/06 22:56:21 wpaul Exp $"; + "$Id: if_ti.c,v 1.109 1999/04/29 16:22:07 wpaul Exp $"; #endif /* @@ -2053,6 +2053,9 @@ static int ti_encap(sc, m_head, txidx) if (m != NULL) return(ENOBUFS); + if (frag == sc->ti_tx_saved_considx) + return(ENOBUFS); + if (sc->ti_hwrev == TI_HWREV_TIGON) sc->ti_rdata->ti_tx_ring_nic[cur % 128].ti_flags |= TI_BDFLAG_END; |
