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net80211: 11ac: add options to manage VHT STBC

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Add IEEE80211_FVHT_STBC_(TX|RX) flags to allow userspace to manage
if STBC will be allowed for VHT RX/TX.
For RX this will only allow us to turn it off but no fine grained
control of the number of supported spatial streams.

Introduce IEEE80211_FVHT_CHANWIDTH_MASK as a helper to make the
spelling out of the IEEE80211_FVHT_MASK more readable.

Update ifconfig to allow setting of these flags.

Sponsored by:	The FreeBSD Foundation
MFC atfer:	3 days
Reviewed by:	adrian
Differential Revision: https://reviews.freebsd.org/D47838
This commit is contained in:
Bjoern A. Zeeb 2024-11-28 23:54:17 +00:00
parent 116102101a
commit 243f6925bf
5 changed files with 44 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
sbin/ifconfig/ifieee80211.c
View File

@ -135,6 +135,8 @@
#define IEEE80211_FVHT_USEVHT80 0x000000004 /* CONF: Use VHT80 */
#define IEEE80211_FVHT_USEVHT160 0x000000008 /* CONF: Use VHT160 */
#define IEEE80211_FVHT_USEVHT80P80 0x000000010 /* CONF: Use VHT 80+80 */
#define IEEE80211_FVHT_STBC_TX 0x00000020 /* CONF: STBC tx enabled */
#define IEEE80211_FVHT_STBC_RX 0x00000040 /* CONF: STBC rx enabled */
#endif
/* Helper macros unified. */
@ -6038,6 +6040,12 @@ static struct cmd ieee80211_cmds[] = {
DEF_CMD("-vht160", -IEEE80211_FVHT_USEVHT160, set80211vhtconf),
DEF_CMD("vht80p80", IEEE80211_FVHT_USEVHT80P80, set80211vhtconf),
DEF_CMD("-vht80p80", -IEEE80211_FVHT_USEVHT80P80, set80211vhtconf),
DEF_CMD("vhtstbctx", IEEE80211_FVHT_STBC_TX, set80211vhtconf),
DEF_CMD("-vhtstbctx", -IEEE80211_FVHT_STBC_TX, set80211vhtconf),
DEF_CMD("vhtstbcrx", IEEE80211_FVHT_STBC_RX, set80211vhtconf),
DEF_CMD("-vhtstbcrx", -IEEE80211_FVHT_STBC_RX, set80211vhtconf),
DEF_CMD("vhtstbc", (IEEE80211_FVHT_STBC_TX|IEEE80211_FVHT_STBC_RX), set80211vhtconf),
DEF_CMD("-vhtstbc", -(IEEE80211_FVHT_STBC_TX|IEEE80211_FVHT_STBC_RX), set80211vhtconf),
DEF_CMD("rifs", 1, set80211rifs),
DEF_CMD("-rifs", 0, set80211rifs),
DEF_CMD("smps", IEEE80211_HTCAP_SMPS_ENA, set80211smps),

4
sys/net80211/ieee80211.c
View File

@ -744,6 +744,8 @@ ieee80211_vap_attach(struct ieee80211vap *vap, ifm_change_cb_t media_change,
ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT80);
ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT160);
ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT80P80);
ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_STBC_TX);
ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_STBC_RX);
IEEE80211_UNLOCK(ic);
return 1;
@ -801,6 +803,8 @@ ieee80211_vap_detach(struct ieee80211vap *vap)
ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT80);
ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT160);
ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_USEVHT80P80);
ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_STBC_TX);
ieee80211_syncflag_vht_locked(ic, IEEE80211_FVHT_STBC_RX);
/* NB: this handles the bpfdetach done below */
ieee80211_syncflag_ext_locked(ic, IEEE80211_FEXT_BPF);

20
sys/net80211/ieee80211_ioctl.c
View File

@ -3506,6 +3506,26 @@ ieee80211_ioctl_set80211(struct ieee80211vap *vap, u_long cmd, struct ieee80211r
else
ieee80211_syncflag_vht(vap, -IEEE80211_FVHT_USEVHT80P80);
/* Check if we can do STBC TX/RX before changing the setting. */
if ((ireq->i_val & IEEE80211_FVHT_STBC_TX) &&
((vap->iv_vht_cap.vht_cap_info & IEEE80211_VHTCAP_TXSTBC) == 0))
return EOPNOTSUPP;
if ((ireq->i_val & IEEE80211_FVHT_STBC_RX) &&
((vap->iv_vht_cap.vht_cap_info & IEEE80211_VHTCAP_RXSTBC_MASK) == 0))
return EOPNOTSUPP;
/* TX */
if (ireq->i_val & IEEE80211_FVHT_STBC_TX)
ieee80211_syncflag_vht(vap, IEEE80211_FVHT_STBC_TX);
else
ieee80211_syncflag_vht(vap, -IEEE80211_FVHT_STBC_TX);
/* RX */
if (ireq->i_val & IEEE80211_FVHT_STBC_RX)
ieee80211_syncflag_vht(vap, IEEE80211_FVHT_STBC_RX);
else
ieee80211_syncflag_vht(vap, -IEEE80211_FVHT_STBC_RX);
error = ENETRESET;
break;

12
sys/net80211/ieee80211_var.h
View File

@ -737,12 +737,20 @@ MALLOC_DECLARE(M_80211_VAP);
#define IEEE80211_FVHT_USEVHT80 0x000000004 /* CONF: Use VHT80 */
#define IEEE80211_FVHT_USEVHT160 0x000000008 /* CONF: Use VHT160 */
#define IEEE80211_FVHT_USEVHT80P80 0x000000010 /* CONF: Use VHT 80+80 */
#define IEEE80211_FVHT_MASK \
#define IEEE80211_FVHT_STBC_TX 0x00000020 /* CONF: STBC tx enabled */
#define IEEE80211_FVHT_STBC_RX 0x00000040 /* CONF: STBC rx enabled */
#define IEEE80211_FVHT_CHANWIDTH_MASK \
(IEEE80211_FVHT_VHT | IEEE80211_FVHT_USEVHT40 | \
IEEE80211_FVHT_USEVHT80 | IEEE80211_FVHT_USEVHT160 | \
IEEE80211_FVHT_USEVHT80P80)
#define IEEE80211_FVHT_MASK \
(IEEE80211_FVHT_CHANWIDTH_MASK | \
IEEE80211_FVHT_STBC_TX | IEEE80211_FVHT_STBC_RX)
#define IEEE80211_VFHT_BITS \
"\20\1VHT\2VHT40\3VHT80\4VHT160\5VHT80P80"
"\20\1VHT\2VHT40\3VHT80\4VHT160\5VHT80P80\6STBC_TX\7STBC_RX"
#define IEEE80211_COM_DETACHED 0x00000001 /* ieee80211_ifdetach called */
#define IEEE80211_COM_REF_ADD 0x00000002 /* add / remove reference */

6
sys/net80211/ieee80211_vht.c
View File

@ -439,8 +439,7 @@ ieee80211_vht_get_vhtcap_ie(struct ieee80211_node *ni,
IEEE80211_VHTCAP_RXSTBC_MASK);
}
val = MIN(val1, val2);
/* XXX For now, use the 11n config flag */
if ((vap->iv_flags_ht & IEEE80211_FHT_STBC_TX) == 0)
if ((vap->iv_vht_flags & IEEE80211_FVHT_STBC_TX) == 0)
val = 0;
new_vhtcap |= _IEEE80211_SHIFTMASK(val, IEEE80211_VHTCAP_TXSTBC);
@ -453,8 +452,7 @@ ieee80211_vht_get_vhtcap_ie(struct ieee80211_node *ni,
IEEE80211_VHTCAP_TXSTBC);
}
val = MIN(val1, val2);
/* XXX For now, use the 11n config flag */
if ((vap->iv_flags_ht & IEEE80211_FHT_STBC_RX) == 0)
if ((vap->iv_vht_flags & IEEE80211_FVHT_STBC_RX) == 0)
val = 0;
new_vhtcap |= _IEEE80211_SHIFTMASK(val, IEEE80211_VHTCAP_RXSTBC_MASK);