Optimize the type of prio and queue_idx in openwifi_tx()

Try to wait a bit instead of quit immediately while status!=DMA_COMPLETE in openwifi_tx()

Optimize seq_no in openwifi_tx()

Calculate the duration/id field in driver:

Linux only sets that field for non-ht, and leaves the field blank for ht. Linux expects lower level set it. This is realized after checking the mac80211 so

Calculate the duration/id field in driver:

Linux only sets that field for non-ht, and leaves the field blank for ht. Linux expects lower level set it. This is realized after checking the mac80211 source code. After studying the duration/id field of COTS WiFi chip by wireshark, we calculate it in driver sdr.c gen_ht_duration_id(). The concrete logic/method of the calculation is in the comments of the function gen_ht_duration_id().

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sifs and n_dbps optimization in openwfii_tx()

date type optimization

Optimize the pkt_need_ack flag check and rate_hw_value override

Add abnormal detection prio >= MAX_NUM_HW_QUEUE in openwifi_tx()

Optimize some variable type

We try to handle all tid, so qos_hdr can be optimized

Merge branch 'pre-release' of github.com:open-sdr/openwifi into pre-release

replace len_mpdu+LEN_PHY_CRC with num_dma_symbol in sdr.c because axis interface in tx_intf IP use it as num_dma_symbol.

Remove unnecessary ht aggr related flag reset:

Don't need to reset _prev variables every time when it is not ht aggr qos data. Reason:
1. In 99.9999% cases, the ht always use qos data and goes to pr

Remove unnecessary ht aggr related flag reset:

Don't need to reset _prev variables every time when it is not ht aggr qos data. Reason:
1. In 99.9999% cases, the ht always use qos data and goes to prio/queue_idx 2. By not resetting the variable to -1, we can have continuous aggregation packet operation in FPGA queue 2.
2. In other words, the aggregation operation for queue 2 in FPGA won't be interrupted by other non aggregation packets (control/management/beacon/etc.) that go to queue 0 (or other queues than 2).
3. From wired domain and upper level ( DSCP, AC (0~3), WMM management, 802.11D service classes and user priority (UP) ) to chip/FPGA queue index, thre should be some (complicated) mapping relationship.
4. More decent design is setting these aggregation flags (ht_aggr_start) per queue/prio here in driver. But since now only queue 2 and 0 are used (data goes to queue 2, others go to queue 0) in normal (most) cases, let's not go to the decent (complicated) solution immediately.

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Driver changes for FPGA SPI Tx LO control
- Manually issue Tx Quadrature calibration if frequency change is more than 100MHz
- Disable FPGA SPI module before calibration
- Add xpu reg 13 to disable c

Driver changes for FPGA SPI Tx LO control
- Manually issue Tx Quadrature calibration if frequency change is more than 100MHz
- Disable FPGA SPI module before calibration
- Add xpu reg 13 to disable control manually

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Update ad9361_rf_set_channel() for easier rssi_half_db rssi_dbm rssi_correction stuffs:
by using the helper functions: rssi_correction_lookup_table(), rssi_dbm_to_rssi_half_db(), rssi_half_db_to_rssi

Update ad9361_rf_set_channel() for easier rssi_half_db rssi_dbm rssi_correction stuffs:
by using the helper functions: rssi_correction_lookup_table(), rssi_dbm_to_rssi_half_db(), rssi_half_db_to_rssi_dbm()

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Restructure a bit ad9361_rf_set_channel() for actual lo tuning and priv lo variable update

Remove unused code in ad9361_rf_set_channel()

Add useful function definition at the beginning of sdr.c

Remove the unused code

Add a printing via comment in openwifi_beacon_work() in case debug

Add MAC addr setting support into driver via openwifi_add_interface()

Add more print into openwifi_bss_info_changed() when vif_priv->enable_beacon

Add more info printing into openwifi_ampdu_action

Remove unused variable from openwifi_dev_probe()

Tell mac80211 we need extra_tx_headroom = LEN_MPDU_DELIM