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Disable Rx checksum offload until I find more clue why it breaks

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under certain environments. However give users chance to override
it when he/she surely knows his/her hardware works with Rx checksum
offload.

Reported by:	Ulrich Spoerlein ( uqs <> spoerlein dot net )
MFC after:	1 week
Approved by:	re (kensmith)
This commit is contained in:
yongari 2009-06-29 05:12:21 +00:00
parent a3faeb1b41
commit f21ccb87b0
1 changed files with 8 additions and 0 deletions
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8
sys/dev/ale/if_ale.c
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@ -620,6 +620,14 @@ ale_attach(device_t dev)
ifp->if_capabilities |= IFCAP_VLAN_MTU;
ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_HWCSUM;
ifp->if_capenable = ifp->if_capabilities;
/*
* Even though controllers supported by ale(3) have Rx checksum
* offload bug the workaround for fragmented frames seemed to
* work so far. However it seems Rx checksum offload does not
* work under certain conditions. So disable Rx checksum offload
* until I find more clue about it but allow users to override it.
*/
ifp->if_capenable &= ~IFCAP_RXCSUM;
/* Tell the upper layer(s) we support long frames. */
ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);