diff options
| author | Brad Smith <brad@cvs.openbsd.org> | 2006-09-17 20:26:15 +0000 |
|---|---|---|
| committer | Brad Smith <brad@cvs.openbsd.org> | 2006-09-17 20:26:15 +0000 |
| commit | 76008af14929770082a9ce88ffea788da2c3266f (patch) | |
| tree | ebe96576c268386aced8f80315db2d07229862ac /sys/dev/pci/if_em.h | |
| parent | 57d09531222ccf0c4d2a3511dd4be67ec3bf557f (diff) | |
Overhaul RX path to recover from mbuf cluster allocation failure.
- Create a spare DMA map for RX handler to recover from
bus_dmamap_load() failure.
- Make sure to update status bit in RX descriptors even if we failed
to allocate a new buffer.
- Don't blindly unload DMA map. Reuse loaded DMA map if received
packet has errors.
From yongari@FreeBSD
Tested by myself and a number of end-users on i386/amd64/sparc64
Diffstat (limited to 'sys/dev/pci/if_em.h')
| -rw-r--r-- | sys/dev/pci/if_em.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/dev/pci/if_em.h b/sys/dev/pci/if_em.h index 8a7f970cbb3..1fc3feff912 100644 --- a/sys/dev/pci/if_em.h +++ b/sys/dev/pci/if_em.h @@ -32,7 +32,7 @@ POSSIBILITY OF SUCH DAMAGE. ***************************************************************************/ /* $FreeBSD: if_em.h,v 1.26 2004/09/01 23:22:41 pdeuskar Exp $ */ -/* $OpenBSD: if_em.h,v 1.28 2006/09/17 17:51:01 brad Exp $ */ +/* $OpenBSD: if_em.h,v 1.29 2006/09/17 20:26:14 brad Exp $ */ #ifndef _EM_H_DEFINED_ #define _EM_H_DEFINED_ @@ -347,6 +347,7 @@ struct em_softc { u_int32_t txd_cmd; struct em_buffer *tx_buffer_area; bus_dma_tag_t txtag; /* dma tag for tx */ + bus_dmamap_t rx_sparemap; /* * Receive definitions |