| Message ID | 20170609110750.14950-2-sven.eckelmann@openmesh.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Delegated to: | Kalle Valo |
| Headers | show |
Sven Eckelmann <sven.eckelmann@openmesh.com> wrote: > QCA9984 hardware can do 4x4 at 80Mhz, but only 2x2 at 160Mhz. > > First, report this to user-space by setting the max-tx-speed > and max-rx-speed vht capabilities. > > Second, if the peer rx-speed is configured, and if we > are in 160 or 80+80 mode, and the peer rx-speed matches > the max speed for 2x2 or 1x1 at 160Mhz (long guard interval), > then use that info to set the peer_bw_rxnss_override appropriately. > > Without this, a 9984 firmware will not use 2x2 ratesets when > transmitting to peer (it will be stuck at 1x1), because > the firmware would not have configured the rxnss_override. > > This could use some testing.... > > Signed-off-by: Ben Greear <greearb@candelatech.com> > [sven.eckelmann@openmesh.com: rebase, cleanup, drop 160Mhz workaround cleanup] > Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com> > Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com> This one had warnings, fixed in pending branch: drivers/net/wireless/ath/ath10k/mac.c:4436:52: warning: incorrect type in assignment (different base types) drivers/net/wireless/ath/ath10k/mac.c:4436:52: expected restricted __le16 [assigned] [usertype] rx_highest drivers/net/wireless/ath/ath10k/mac.c:4436:52: got int drivers/net/wireless/ath/ath10k/mac.c:4437:52: warning: incorrect type in assignment (different base types) drivers/net/wireless/ath/ath10k/mac.c:4437:52: expected restricted __le16 [assigned] [usertype] tx_highest drivers/net/wireless/ath/ath10k/mac.c:4437:52: got int
Sven Eckelmann <sven.eckelmann@openmesh.com> writes: > From: Ben Greear <greearb@candelatech.com> > > QCA9984 hardware can do 4x4 at 80Mhz, but only 2x2 at 160Mhz. > > First, report this to user-space by setting the max-tx-speed > and max-rx-speed vht capabilities. > > Second, if the peer rx-speed is configured, and if we > are in 160 or 80+80 mode, and the peer rx-speed matches > the max speed for 2x2 or 1x1 at 160Mhz (long guard interval), > then use that info to set the peer_bw_rxnss_override appropriately. > > Without this, a 9984 firmware will not use 2x2 ratesets when > transmitting to peer (it will be stuck at 1x1), because > the firmware would not have configured the rxnss_override. > > This could use some testing.... Sven, I assume you have tested this so I removed the last sentence. > @@ -4408,6 +4422,23 @@ static struct ieee80211_sta_vht_cap ath10k_create_vht_cap(struct ath10k *ar) > vht_cap.vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map); > vht_cap.vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map); > > + /* If we are supporting 160Mhz or 80+80, then the NIC may be able to do > + * a restricted NSS for 160 or 80+80 vs what it can do for 80Mhz. Give > + * user-space a clue if that is the case. > + */ > + if (vht_cap.cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) { > + switch (ar->dev_id) { > + case QCA9984_1_0_DEVICE_ID: > + /* Can do only 2x2 VHT160 or 80+80. > + * 1560Mbps is 4x4 80Mhz or 2x2 160Mhz, > + * long-guard-interval > + */ > + vht_cap.vht_mcs.rx_highest = 1560; > + vht_cap.vht_mcs.tx_highest = 1560; > + break; > + } > + } We have hw_params for stuff like this so I changed this and the following patch to use that. Please review: https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/commit/?h=pending&id=81f55f2a3e1837287a52de6577ca89a2c7393456 https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/commit/?h=pending&id=09ce674529472c8deca41fbb28bad59e03330321
On Freitag, 16. Juni 2017 08:50:13 CEST Kalle Valo wrote: > We have hw_params for stuff like this so I changed this and the > following patch to use that. Please review: Looks good. Thanks for adjusting the patches. Kind regards, Sven
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 8087b6be5484..0752cf351b4a 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -2519,6 +2519,20 @@ static void ath10k_peer_assoc_h_vht(struct ath10k *ar, ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vht peer %pM max_mpdu %d flags 0x%x\n", sta->addr, arg->peer_max_mpdu, arg->peer_flags); + + if (arg->peer_vht_rates.rx_max_rate && + (sta->vht_cap.cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK)) { + switch (arg->peer_vht_rates.rx_max_rate) { + case 1560: + /* Must be 2x2 at 160Mhz is all it can do. */ + arg->peer_bw_rxnss_override = 2; + break; + case 780: + /* Can only do 1x1 at 160Mhz (Long Guard Interval) */ + arg->peer_bw_rxnss_override = 1; + break; + } + } } static void ath10k_peer_assoc_h_qos(struct ath10k *ar, @@ -4408,6 +4422,23 @@ static struct ieee80211_sta_vht_cap ath10k_create_vht_cap(struct ath10k *ar) vht_cap.vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map); vht_cap.vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map); + /* If we are supporting 160Mhz or 80+80, then the NIC may be able to do + * a restricted NSS for 160 or 80+80 vs what it can do for 80Mhz. Give + * user-space a clue if that is the case. + */ + if (vht_cap.cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) { + switch (ar->dev_id) { + case QCA9984_1_0_DEVICE_ID: + /* Can do only 2x2 VHT160 or 80+80. + * 1560Mbps is 4x4 80Mhz or 2x2 160Mhz, + * long-guard-interval + */ + vht_cap.vht_mcs.rx_highest = 1560; + vht_cap.vht_mcs.tx_highest = 1560; + break; + } + } + return vht_cap; } diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c index 6afc8d27f0d5..2c3b0214ba5f 100644 --- a/drivers/net/wireless/ath/ath10k/wmi.c +++ b/drivers/net/wireless/ath/ath10k/wmi.c @@ -6757,7 +6757,12 @@ ath10k_wmi_peer_assoc_fill_10_4(struct ath10k *ar, void *buf, struct wmi_10_4_peer_assoc_complete_cmd *cmd = buf; ath10k_wmi_peer_assoc_fill_10_2(ar, buf, arg); - cmd->peer_bw_rxnss_override = 0; + if (arg->peer_bw_rxnss_override) + cmd->peer_bw_rxnss_override = + __cpu_to_le32((arg->peer_bw_rxnss_override - 1) | + BIT(PEER_BW_RXNSS_OVERRIDE_OFFSET)); + else + cmd->peer_bw_rxnss_override = 0; } static int diff --git a/drivers/net/wireless/ath/ath10k/wmi.h b/drivers/net/wireless/ath/ath10k/wmi.h index 1b4865a55595..dd6cac150749 100644 --- a/drivers/net/wireless/ath/ath10k/wmi.h +++ b/drivers/net/wireless/ath/ath10k/wmi.h @@ -6028,6 +6028,7 @@ struct wmi_10_2_peer_assoc_complete_cmd { __le32 info0; /* WMI_PEER_ASSOC_INFO0_ */ } __packed; +#define PEER_BW_RXNSS_OVERRIDE_OFFSET 31 struct wmi_10_4_peer_assoc_complete_cmd { struct wmi_10_2_peer_assoc_complete_cmd cmd; __le32 peer_bw_rxnss_override; @@ -6051,6 +6052,7 @@ struct wmi_peer_assoc_complete_arg { u32 peer_vht_caps; enum wmi_phy_mode peer_phymode; struct wmi_vht_rate_set_arg peer_vht_rates; + u32 peer_bw_rxnss_override; }; struct wmi_peer_add_wds_entry_cmd {