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| author | tmm <tmm@FreeBSD.org> | 2002-03-23 19:43:15 +0000 |
|---|---|---|
| committer | tmm <tmm@FreeBSD.org> | 2002-03-23 19:43:15 +0000 |
| commit | b004f846650d2b4557c3bd674a96672a970f1b0b (patch) | |
| tree | 73dce8b86a48d31813798ad37382811ddd497552 /sys/dev/gem/if_gemvar.h | |
| parent | 67873bb7a8246bf8d6726b0912d5d7de275e340a (diff) | |
| download | FreeBSD-src-b004f846650d2b4557c3bd674a96672a970f1b0b.zip FreeBSD-src-b004f846650d2b4557c3bd674a96672a970f1b0b.tar.gz | |
In some cases, RX descriptors that are signalled to have been completed
by the hardware are still marked as owned. Handle this by installing a
timeout handler to collect this descriptor to avoid having received
packets remain unhandled until the next one arrives.
Diffstat (limited to 'sys/dev/gem/if_gemvar.h')
| -rw-r--r-- | sys/dev/gem/if_gemvar.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sys/dev/gem/if_gemvar.h b/sys/dev/gem/if_gemvar.h index 8abce88..9e6c7ee 100644 --- a/sys/dev/gem/if_gemvar.h +++ b/sys/dev/gem/if_gemvar.h @@ -60,6 +60,12 @@ #define GEM_NEXTRX(x) ((x + 1) & GEM_NRXDESC_MASK) /* + * How many ticks to wait until to retry on a RX descriptor that is still owned + * by the hardware. + */ +#define GEM_RXOWN_TICKS (hz / 50) + +/* * Control structures are DMA'd to the GEM chip. We allocate them in * a single clump that maps to a single DMA segment to make several things * easier. @@ -132,6 +138,7 @@ struct gem_softc { struct mii_data *sc_mii; /* MII media control */ device_t sc_dev; /* generic device information */ struct callout sc_tick_ch; /* tick callout */ + struct callout sc_rx_ch; /* delayed rx callout */ /* The following bus handles are to be provided by the bus front-end */ bus_space_tag_t sc_bustag; /* bus tag */ |
