# iw phy phy0 info
Wiphy phy0 max # scan SSIDs: 4 max scan IEs length: 2257 bytes Retry short limit: 7 Retry long limit: 4 Coverage class: 5 (up to 2250m) // 这个是用来干嘛的，等级是如何划分的？ Device supports AP-side u-APSD. Device supports T-DLS. Available Antennas: TX 0x3 RX 0x3 Configured Antennas: TX 0x1 RX 0x1 Supported interface modes: * IBSS * managed * AP * AP/VLAN * WDS * monitor * mesh point * P2P-client * P2P-GO Band 1: Capabilities: 0x11ef RX LDPC HT20/HT40 SM Power Save disabled RX HT20 SGI RX HT40 SGI TX STBC RX STBC 1-stream Max AMSDU length: 3839 bytes DSSS/CCK HT40 Maximum RX AMPDU length 65535 bytes (exponent: 0x003) Minimum RX AMPDU time spacing: 8 usec (0x06) HT TX/RX MCS rate indexes supported: 0-7 Frequencies: * 2412 MHz [1] (19.0 dBm) * 2417 MHz [2] (19.0 dBm) * 2422 MHz [3] (19.0 dBm) * 2427 MHz [4] (19.0 dBm) * 2432 MHz [5] (19.0 dBm) * 2437 MHz [6] (19.0 dBm) * 2442 MHz [7] (19.0 dBm) * 2447 MHz [8] (19.0 dBm) * 2452 MHz [9] (19.0 dBm) * 2457 MHz [10] (19.0 dBm) * 2462 MHz [11] (19.0 dBm) * 2467 MHz [12] (disabled) * 2472 MHz [13] (disabled) * 2484 MHz [14] (disabled) valid interface combinations: * #{ managed } <= 2048, #{ AP, mesh point } <= 8, #{ P2P-client, P2P-GO } <= 1, #{ IBSS } <= 1, total <= 2048, #channels <= 1, STA/AP BI must match * #{ WDS } <= 2048, total <= 2048, #channels <= 1, STA/AP BI must match * #{ IBSS, AP, mesh point } <= 1, total <= 1, #channels <= 1, STA/AP BI must match, radar detect widths: { 20 MHz (no HT), 20 MHz, 40 MHz }HT Capability overrides:
* MCS: ff ff ff ff ff ff ff ff ff ff * maximum A-MSDU length * supported channel width * short GI for 40 MHz * max A-MPDU length exponent * min MPDU start spacing#