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qcacld-3.0: Fallback to 80MHz capability if HE160 MCS is not valid

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If the STA DUT is attempting to connect in 160MHz channel width,
and if the HE160 Rx/Tx MCS is not valid after intersection, the
STA DUT will fallback to 80MHZ channel width.

Change-Id: I11fe8830851fcbb3796703a605568f83c9ff9932
CRs-Fixed: 3011510
This commit is contained in:
Surya Prakash Sivaraj 2021-08-20 11:14:44 +05:30 • committed by Madan Koyyalamudi
commit 0080099b5d
1 changed files with 39 additions and 2 deletions
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41
core/mac/src/pe/lim/lim_prop_exts_utils.c
View file

@ -161,6 +161,36 @@ static void lim_extract_he_op(struct pe_session *session,
}
}
static bool lim_validate_he160_mcs_map(struct mac_context *mac_ctx,
uint16_t peer_rx, uint16_t peer_tx,
uint8_t nss)
{
uint16_t rx_he_mcs_map;
uint16_t tx_he_mcs_map;
uint16_t he_mcs_map;
he_mcs_map = *((uint16_t *)mac_ctx->mlme_cfg->he_caps.dot11_he_cap.
tx_he_mcs_map_160);
rx_he_mcs_map = HE_INTERSECT_MCS(peer_rx, he_mcs_map);
he_mcs_map = *((uint16_t *)mac_ctx->mlme_cfg->he_caps.dot11_he_cap.
rx_he_mcs_map_160);
tx_he_mcs_map = HE_INTERSECT_MCS(peer_tx, he_mcs_map);
if (nss == NSS_1x1_MODE) {
rx_he_mcs_map |= HE_MCS_INV_MSK_4_NSS(1);
tx_he_mcs_map |= HE_MCS_INV_MSK_4_NSS(1);
} else if (nss == NSS_2x2_MODE) {
rx_he_mcs_map |= (HE_MCS_INV_MSK_4_NSS(1) &
HE_MCS_INV_MSK_4_NSS(2));
tx_he_mcs_map |= (HE_MCS_INV_MSK_4_NSS(1) &
HE_MCS_INV_MSK_4_NSS(2));
}
return ((rx_he_mcs_map != HE_MCS_ALL_DISABLED) &&
(tx_he_mcs_map != HE_MCS_ALL_DISABLED));
}
static void lim_check_is_he_mcs_valid(struct pe_session *session,
tSirProbeRespBeacon *beacon_struct)
{
@ -200,8 +230,10 @@ void lim_update_he_bw_cap_mcs(struct pe_session *session,
if (!beacon->he_cap.chan_width_2)
is_80mhz = 1;
else if (beacon->he_cap.chan_width_2 &&
(*(uint16_t *)beacon->he_cap.rx_he_mcs_map_160 ==
HE_MCS_ALL_DISABLED))
!lim_validate_he160_mcs_map(session->mac_ctx,
*((uint16_t *)beacon->he_cap.rx_he_mcs_map_160),
*((uint16_t *)beacon->he_cap.tx_he_mcs_map_160),
session->nss))
is_80mhz = 1;
else
is_80mhz = 0;
@ -213,6 +245,11 @@ void lim_update_he_bw_cap_mcs(struct pe_session *session,
session->he_config.chan_width_2 = 0;
session->he_config.chan_width_3 = 0;
} else if (session->ch_width == CH_WIDTH_160MHZ) {
if (is_80mhz) {
pe_debug("HE160 Rx/Tx MCS is not valid, falling back to 80MHz");
session->ch_width = CH_WIDTH_80MHZ;
session->he_config.chan_width_2 = 0;
}
session->he_config.chan_width_3 = 0;
}
/* Reset the > 20MHz caps for 20MHz connection */