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Code Issues Releases Activity

hyperv/hn: Allow RSS capability flipping upon attach/reinit.

Browse Source 
MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D7927
This commit is contained in:
Sepherosa Ziehau 2016-09-19 07:47:56 +00:00
parent 12fe8fd761
commit 8377ced7ee
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=305967
2 changed files with 20 additions and 11 deletions
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2
sys/dev/hyperv/netvsc/hv_net_vsc.h
View File

@ -245,6 +245,8 @@ struct hn_softc {
#define HN_FLAG_RXBUF_CONNECTED 0x0001
#define HN_FLAG_CHIM_CONNECTED 0x0002
#define HN_FLAG_HAS_RSSKEY 0x0004
#define HN_FLAG_HAS_RSSIND 0x0008
#define HN_CAP_VLAN 0x0001
#define HN_CAP_MTU 0x0002

29
sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
View File

@ -2146,6 +2146,7 @@ hn_rss_key_sysctl(SYSCTL_HANDLER_ARGS)
error = SYSCTL_IN(req, sc->hn_rss.rss_key, sizeof(sc->hn_rss.rss_key));
if (error)
goto back;
sc->hn_flags |= HN_FLAG_HAS_RSSKEY;
if (sc->hn_rx_ring_inuse > 1) {
error = hn_rss_reconfig(sc);
@ -2182,6 +2183,7 @@ hn_rss_ind_sysctl(SYSCTL_HANDLER_ARGS)
error = SYSCTL_IN(req, sc->hn_rss.rss_ind, sizeof(sc->hn_rss.rss_ind));
if (error)
goto back;
sc->hn_flags |= HN_FLAG_HAS_RSSIND;
hn_rss_ind_fixup(sc, sc->hn_rx_ring_inuse);
error = hn_rss_reconfig(sc);
@ -3335,24 +3337,29 @@ hn_synth_attach(struct hn_softc *sc, int mtu)
* are allocated.
*/
if (!device_is_attached(sc->hn_dev)) {
if ((sc->hn_flags & HN_FLAG_HAS_RSSKEY) == 0) {
/*
* 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.
* RSS key is not set yet; set it to the default RSS key.
*/
if (bootverbose)
if_printf(sc->hn_ifp, "setup default RSS key\n");
memcpy(rss->rss_key, hn_rss_key_default, sizeof(rss->rss_key));
sc->hn_flags |= HN_FLAG_HAS_RSSKEY;
}
if ((sc->hn_flags & HN_FLAG_HAS_RSSIND) == 0) {
/*
* RSS indirect table is not set yet; set it up in round-
* robin fashion.
*/
if (bootverbose) {
if_printf(sc->hn_ifp, "setup default RSS key and "
"indirect table\n");
if_printf(sc->hn_ifp, "setup default RSS indirect "
"table\n");
}
/* 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;
sc->hn_flags |= HN_FLAG_HAS_RSSIND;
} else {
/*
* # of usable channels may be changed, so we have to