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hyperv/hn: Always query RSS capabilities.

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- This avoid distributing NDIS version check.
- Only NDIS 6.20 required (earlier NDIS uses different indirect table
  format).

MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D8291
This commit is contained in:
Sepherosa Ziehau 2016-10-21 07:37:29 +00:00
parent e0e8479b87
commit 0634f75c72
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=307710
3 changed files with 13 additions and 13 deletions
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5
sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
View File

@ -3408,10 +3408,9 @@ hn_synth_alloc_subchans(struct hn_softc *sc, int *nsubch)
int nchan, rxr_cnt, error;
nchan = *nsubch + 1;
if (sc->hn_ndis_ver < HN_NDIS_VERSION_6_30 || nchan == 1) {
if (nchan == 1) {
/*
* Either RSS is not supported, or multiple RX/TX rings
* are not requested.
* Multiple RX/TX rings are not requested.
*/
*nsubch = 0;
return (0);

20
sys/dev/hyperv/netvsc/hv_rndis_filter.c
View File

@ -744,15 +744,13 @@ hn_rndis_get_rsscaps(struct hn_softc *sc, int *rxr_cnt)
*rxr_cnt = 0;
if (sc->hn_ndis_ver < HN_NDIS_VERSION_6_20)
return (EOPNOTSUPP);
memset(&in, 0, sizeof(in));
in.ndis_hdr.ndis_type = NDIS_OBJTYPE_RSS_CAPS;
if (sc->hn_ndis_ver < HN_NDIS_VERSION_6_30) {
in.ndis_hdr.ndis_rev = NDIS_RSS_CAPS_REV_1;
in.ndis_hdr.ndis_size = NDIS_RSS_CAPS_SIZE_6_0;
} else {
in.ndis_hdr.ndis_rev = NDIS_RSS_CAPS_REV_2;
in.ndis_hdr.ndis_size = NDIS_RSS_CAPS_SIZE;
}
in.ndis_hdr.ndis_rev = NDIS_RSS_CAPS_REV_2;
in.ndis_hdr.ndis_size = NDIS_RSS_CAPS_SIZE;
caps_len = NDIS_RSS_CAPS_SIZE;
error = hn_rndis_query2(sc, OID_GEN_RECEIVE_SCALE_CAPABILITIES,
@ -1027,10 +1025,12 @@ hn_rndis_conf_rss(struct hn_softc *sc, uint16_t flags)
int error;
/*
* Only NDIS 6.30+ is supported.
* Only NDIS 6.20+ is supported:
* We only support 4bytes element in indirect table, which has been
* adopted since NDIS 6.20.
*/
KASSERT(sc->hn_ndis_ver >= HN_NDIS_VERSION_6_30,
("NDIS 6.30+ is required, NDIS version 0x%08x", sc->hn_ndis_ver));
KASSERT(sc->hn_ndis_ver >= HN_NDIS_VERSION_6_20,
("NDIS 6.20+ is required, NDIS version 0x%08x", sc->hn_ndis_ver));
/*
* NOTE:

1
sys/dev/hyperv/netvsc/if_hnreg.h
View File

@ -36,6 +36,7 @@
* NDIS protocol version numbers
*/
#define HN_NDIS_VERSION_6_1 0x00060001
#define HN_NDIS_VERSION_6_20 0x00060014
#define HN_NDIS_VERSION_6_30 0x0006001e
#define HN_NDIS_VERSION_MAJOR(ver) (((ver) & 0xffff0000) >> 16)
#define HN_NDIS_VERSION_MINOR(ver) ((ver) & 0xffff)