d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

hyperv/hn: Apply RSS indirect table fixup before configure RNDIS RSS.

Browse Source 
MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D7916
This commit is contained in:
sephe 2016-09-19 06:46:22 +00:00
parent 1c690efc0a
commit ba2004cd6c
1 changed files with 28 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
View File

@ -428,6 +428,26 @@ hn_rss_reconfig(struct hn_softc *sc)
return (0);
}
static void
hn_rss_ind_fixup(struct hn_softc *sc, int nchan)
{
struct ndis_rssprm_toeplitz *rss = &sc->hn_rss;
int i;
/*
* Check indirect table to make sure that all channels in it
* can be used.
*/
for (i = 0; i < NDIS_HASH_INDCNT; ++i) {
if (rss->rss_ind[i] >= nchan) {
if_printf(sc->hn_ifp,
"RSS indirect table %d fixup: %u -> %d\n",
i, rss->rss_ind[i], nchan - 1);
rss->rss_ind[i] = nchan - 1;
}
}
}
static int
hn_ifmedia_upd(struct ifnet *ifp __unused)
{
@ -2112,6 +2132,7 @@ hn_rss_ind_sysctl(SYSCTL_HANDLER_ARGS)
if (error)
goto back;
hn_rss_ind_fixup(sc, sc->hn_rx_ring_inuse);
error = hn_rss_reconfig(sc);
back:
HN_UNLOCK(sc);
@ -3265,6 +3286,13 @@ hn_synth_attach(struct hn_softc *sc, int mtu)
/* TODO: Take ndis_rss_caps.ndis_nind into account. */
for (i = 0; i < NDIS_HASH_INDCNT; ++i)
rss->rss_ind[i] = i % nchan;
} else {
/*
* # of usable channels may be changed, so we have to
* make sure that all entries in RSS indirect table
* are valid.
*/
hn_rss_ind_fixup(sc, nchan);
}
error = hn_rndis_conf_rss(sc, NDIS_RSS_FLAG_NONE);