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It seems some 82559ER controllers do not support Rx checksum

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offloading. Datasheet said nothing about the limitation of 82559ER
except WOL. Explicitly disable Rx checksum offloading for
controllers that is known to lack the capability.

PR:	kern/138135
Tested by:	Gooderum, Mark < mgooderum <> websense dot com >
This commit is contained in:
Pyun YongHyeon 2009-09-28 19:40:16 +00:00
parent 32f8942a21
commit 829b278e5e
1 changed files with 5 additions and 2 deletions
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7
sys/dev/fxp/if_fxp.c
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@ -631,8 +631,11 @@ fxp_attach(device_t dev)
}
/* For 82559 or later chips, Rx checksum offload is supported. */
if (sc->revision >= FXP_REV_82559_A0)
sc->flags |= FXP_FLAG_82559_RXCSUM;
if (sc->revision >= FXP_REV_82559_A0) {
/* 82559ER does not support Rx checksum offloading. */
if (sc->ident->devid != 0x1209)
sc->flags |= FXP_FLAG_82559_RXCSUM;
}
/*
* Enable use of extended RFDs and TCBs for 82550
* and later chips. Note: we need extended TXCB support