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mxge's tunable hw.mxge.rss_hash_type cannot be set from the

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loader, because it uses a reserved suffix (_type).  Fix
this by removing the "_" and renaming the tunable to
hw.mxge.rss_hashtype.  The old (rss_hash_type) tunable is
still fetched, in case people load the driver via scripts.
When both are present in the kernel environment,
the new value (hw.mxge.rss_hashtype) overrides the old
value.

Approved by:	re (kib)
This commit is contained in:
Andrew Gallatin 2009-07-22 11:57:34 +00:00
parent 90ad51e897
commit 94c7d993a3
2 changed files with 3 additions and 2 deletions
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4
share/man/man4/mxge.4
View File

@ -125,14 +125,14 @@ A slice is comprised
of a set of receive queues and an associated interrupt thread.
When using multiple slices, the NIC hashes traffic to different slices
based on the value of
.Va hw.mxge.rss_hash_type .
.Va hw.mxge.rss_hashtype .
Using multiple slices requires that your motherboard and Myri10GE NIC
both be capable of MSI-X.
Older Myri10GE NICs can be field upgraded to add
MSI-X using the "10G NIC Tool Kit" for FreeBSD which is available from
.Pa http://www.myri.com/scs/download-10g-tools.html .
.Pp
.It Va hw.mxge.rss_hash_type
.It Va hw.mxge.rss_hashtype
This value determines how incoming traffic is steered to different
slices.
This tunable is ignored when using just a single slice.

1
sys/dev/mxge/if_mxge.c
View File

@ -4014,6 +4014,7 @@ mxge_fetch_tunables(mxge_softc_t *sc)
TUNABLE_INT_FETCH("hw.mxge.lro_cnt", &sc->lro_cnt);
TUNABLE_INT_FETCH("hw.mxge.always_promisc", &mxge_always_promisc);
TUNABLE_INT_FETCH("hw.mxge.rss_hash_type", &mxge_rss_hash_type);
TUNABLE_INT_FETCH("hw.mxge.rss_hashtype", &mxge_rss_hash_type);
TUNABLE_INT_FETCH("hw.mxge.initial_mtu", &mxge_initial_mtu);
if (sc->lro_cnt != 0)
mxge_lro_cnt = sc->lro_cnt;