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    # QoS Manager
    
    
    This program implements methods provided by the `qos` object on U-Bus. This is done by calling `libqos` provided by `easy-soc-libs`.
    
    ## UCI Config
    
    qosmngr requires a configuration file provide objects over ubus. The configuration file is an uci file `/etc/config/qos`. Sample configuration file is provided below.
    
    
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    ```
    
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    config queue 'q_0_eth1'
            option enable '1'
            option ifname 'eth1'
            option precedence '0'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_1_eth1'
            option enable '1'
            option ifname 'eth1'
            option precedence '1'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_2_eth1'
            option enable '1'
            option ifname 'eth1'
            option precedence '2'
            option scheduling 'SP'
            option rate '0'
            option weight '1'
            option burst_size '0'
    
    config queue 'q_3_eth1'
            option enable '1'
            option ifname 'eth1'
            option precedence '3'
            option scheduling 'SP'
            option rate '0'
            option weight '1'
            option burst_size '0'
    
    config queue 'q_4_eth1'
            option enable '1'
            option ifname 'eth1'
            option precedence '4'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_5_eth1'
            option enable '1'
            option ifname 'eth1'
            option precedence '5'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_6_eth1'
            option enable '1'
            option ifname 'eth1'
            option precedence '6'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_7_eth1'
            option enable '1'
            option ifname 'eth1'
            option precedence '7'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_0_eth2'
            option enable '1'
            option ifname 'eth2'
            option precedence '0'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_1_eth2'
            option enable '1'
            option ifname 'eth2'
            option precedence '1'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_2_eth2'
            option enable '1'
            option ifname 'eth2'
            option precedence '2'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_3_eth2'
            option enable '1'
            option ifname 'eth2'
            option precedence '3'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_4_eth2'
            option enable '1'
            option ifname 'eth2'
            option precedence '4'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_5_eth2'
            option enable '1'
            option ifname 'eth2'
            option precedence '5'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_6_eth2'
            option enable '1'
            option ifname 'eth2'
            option precedence '6'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_7_eth2'
            option enable '1'
            option ifname 'eth2'
            option precedence '7'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_0_eth3'
            option enable '1'
            option ifname 'eth3'
            option precedence '0'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_1_eth3'
            option enable '1'
            option ifname 'eth3'
            option precedence '1'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_2_eth3'
            option enable '1'
            option ifname 'eth3'
            option precedence '2'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_3_eth3'
            option enable '1'
            option ifname 'eth3'
            option precedence '3'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_4_eth3'
            option enable '1'
            option ifname 'eth3'
            option precedence '4'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_5_eth3'
            option enable '1'
            option ifname 'eth3'
            option precedence '5'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_6_eth3'
            option enable '1'
            option ifname 'eth3'
            option precedence '6'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_7_eth3'
            option enable '1'
            option ifname 'eth3'
            option precedence '7'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_0_eth4'
            option enable '1'
            option ifname 'eth4'
            option precedence '0'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_1_eth4'
            option enable '1'
            option ifname 'eth4'
            option precedence '1'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_2_eth4'
            option enable '1'
            option ifname 'eth4'
            option precedence '2'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_3_eth4'
            option enable '1'
            option ifname 'eth4'
            option precedence '3'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_4_eth4'
            option enable '1'
            option ifname 'eth4'
            option precedence '4'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_5_eth4'
            option enable '1'
            option ifname 'eth4'
            option precedence '5'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_6_eth4'
            option enable '1'
            option ifname 'eth4'
            option precedence '6'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_7_eth4'
            option enable '1'
            option ifname 'eth4'
            option precedence '7'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_0_eth0'
            option enable '1'
            option ifname 'eth0'
            option precedence '0'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_1_eth0'
            option enable '1'
            option ifname 'eth0'
            option precedence '1'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_2_eth0'
            option enable '1'
            option ifname 'eth0'
            option precedence '2'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_3_eth0'
            option enable '1'
            option ifname 'eth0'
            option precedence '3'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_4_eth0'
            option enable '1'
            option ifname 'eth0'
            option precedence '4'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_5_eth0'
            option enable '1'
            option ifname 'eth0'
            option precedence '5'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_6_eth0'
            option enable '1'
            option ifname 'eth0'
            option precedence '6'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config queue 'q_7_eth0'
            option enable '1'
            option ifname 'eth0'
            option precedence '7'
            option scheduling 'SP'
            option rate '0'
            option burst_size '0'
            option weight '1'
    
    config classify 'cfg298143'
            option enable '1'
            option src_vendor_class_id '234be'
            option src_user_class_id '234be'
            option dst_vendor_class_id '234be'
            option dst_user_class_id '234be'
            option dst_client_id '34ab'
            option src_client_id '34ab'
            option vid_check '23'
            option traffic_class '3'
            option src_port '1'
            option dest_port '1'
            option src_port_range '-1'
            option dest_port_range '-1'
            option ifname 'eth0'
            option policer 'cfg2b6c73'
            option ethertype '0'
            option dhcp_type '0'
            option proto '1'
            option ip_len_min '0'
            option ip_len_max '0'
            option dest_ip '1.2.3.4'
            option src_ip '4.3.2.1'
            option pcp_check '1'
            option src_mac 'aa:bb:cc:dd:ee:ff'
            option dst_mac 'e8:bc:c3:dc:23:f4'
            option dscp_filter '1'
            option dscp_mark '1'
    
    config shaper
            option enable '0'
            option burst_size '0'
            option rate '0'
            option ifname 'eth0'
    
    config policer
            option enable '1'
            option committed_rate '0'
            option committed_burst_size '0'
            option excess_burst_size '0'
            option peak_rate '0'
            option peak_burst_size '0'
            option meter_type '0'
            option name 'cfg2b6c73'
    
    
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    ```
    
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    ## uBus API
    
    
    `ubusd` has to be running all time, as it exposes the qos functionality over ubus. By default,qosmngr registers below namespace with ubus.
    
    
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    ```
    
    root@iopsys:~# ubus -v list | grep qos
    'qos' @e1f3b458
    root@iopsys:~# 
    
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    ```
    
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    ```
    
    root@iopsys:~# ubus -v list qos
    'qos' @e1f3b458
            "queue_stats":{"ifname":"String","qid":"String"}
            "reload":{"section":"String"}
    root@iopsys:~# 
    
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    ```
    
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    ```
    
    root@iopsys:~# 
    root@iopsys:~# ubus -S call qos reload
    root@iopsys:~# 
    root@iopsys:~# ubus -S call qos reload '{"section":"classify"}'
    root@iopsys:~# 
    root@iopsys:~# ubus -S call qos reload '{"section":"queues"}'
    root@iopsys:~# 
    root@iopsys:~# ubus -S call qos reload '{"section":"policer"}'
    root@iopsys:~# 
    root@iopsys:~# ubus -S call qos reload '{"section":"shaper"}'
    root@iopsys:~# 
    
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    ```
    
    - `queue_stats  : {"ifname":"String","qid":"Integer"}`
        - `ifname`: interface name for which we want to get the QoS statistics. Optional argument: if not provided, the statistics of all ports for all queues are returned.
        - `qid`: the TX queue ID for which we want to get the statistics. Optional argument: if not provided, the statistics of all queues for a given interface are returned.
    
        The response given by this method is a JSON-formatted dump as such:
    
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    ```
    
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        root@iopsys:~# ubus  call qos queue_stats '{"ifname":"eth1","qid":1}'
        {
    	"queues": [
    		{
    			"iface": "eth1",
    			"qid": 1,
    			"tx_packets": 13632,
    			"tx_bytes": 1377736,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		}
    	]
        }
        root@iopsys:~# ubus call qos queue_stats '{"ifname":"eth0"}'
        {
    	"queues": [
    		{
    			"iface": "eth0",
    			"qid": 0,
    			"tx_packets": 20,
    			"tx_bytes": 4436,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth0",
    			"qid": 1,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth0",
    			"qid": 2,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth0",
    			"qid": 3,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth0",
    			"qid": 4,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth0",
    			"qid": 5,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth0",
    			"qid": 6,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth0",
    			"qid": 7,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		}
    	]
        }
        root@iopsys:~# ubus call qos queue_stats
        {
    	"queues": [
    		{
    			"iface": "eth1",
    			"qid": 0,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth1",
    			"qid": 1,
    			"tx_packets": 7575,
    			"tx_bytes": 1186770,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth1",
    			"qid": 2,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth1",
    			"qid": 3,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth1",
    			"qid": 4,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth1",
    			"qid": 5,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth1",
    			"qid": 6,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth1",
    			"qid": 7,
    			"tx_packets": 199,
    			"tx_bytes": 20540,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth2",
    			"qid": 0,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth2",
    			"qid": 1,
    			"tx_packets": 2852,
    			"tx_bytes": 295268,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth2",
    			"qid": 2,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth2",
    			"qid": 3,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth2",
    			"qid": 4,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth2",
    			"qid": 5,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth2",
    			"qid": 6,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth2",
    			"qid": 7,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth3",
    			"qid": 0,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth3",
    			"qid": 1,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth3",
    			"qid": 2,
    			"tx_packets": 0,
    			"tx_bytes": 0,
    			"tx_dropped_packets": 0,
    			"tx_dropped_bytes": 0
    		},
    		{
    			"iface": "eth3",
    			"qid": 3,
    			"tx_packets": 0,
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    ```