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hyperv/hn: Don't mess up RSS key and indirect table after attachment.

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MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D7889
This commit is contained in:
sephe 2016-09-18 08:10:40 +00:00
parent a239b508b1
commit f29c827bf6
1 changed files with 18 additions and 6 deletions
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24
sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
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@ -3159,13 +3159,25 @@ hn_synth_attach(struct hn_softc *sc, int mtu)
* are allocated.
*/
/* Setup default RSS key. */
memcpy(rss->rss_key, hn_rss_key_default, sizeof(rss->rss_key));
if (!device_is_attached(sc->hn_dev)) {
/*
* Setup default RSS key and indirect table for the
* attach DEVMETHOD. They can be altered later on,
* so don't mess them up once this interface is attached.
*/
if (bootverbose) {
if_printf(sc->hn_ifp, "setup default RSS key and "
"indirect table\n");
}
/* Setup default RSS indirect table. */
/* TODO: Take ndis_rss_caps.ndis_nind into account. */
for (i = 0; i < NDIS_HASH_INDCNT; ++i)
rss->rss_ind[i] = i % nchan;
/* Setup default RSS key. */
memcpy(rss->rss_key, hn_rss_key_default, sizeof(rss->rss_key));
/* Setup default RSS indirect table. */
/* TODO: Take ndis_rss_caps.ndis_nind into account. */
for (i = 0; i < NDIS_HASH_INDCNT; ++i)
rss->rss_ind[i] = i % nchan;
}
error = hn_rndis_conf_rss(sc);
if (error) {