add linux support for netstat -i

README.md

@@ -1704,6 +1704,38 @@ $ netstat -r | jc --netstat -p          # or:  jc -p netstat -r
     "kind": "route"
   }
 ]
+
+$ netstat -i | jc --netstat -p          # or:  jc -p netstat -i
+[
+  {
+    "iface": "ens33",
+    "mtu": 1500,
+    "rx_ok": 476,
+    "rx_err": 0,
+    "rx_drp": 0,
+    "rx_ovr": 0,
+    "tx_ok": 312,
+    "tx_err": 0,
+    "tx_drp": 0,
+    "tx_ovr": 0,
+    "flg": "BMRU",
+    "kind": "interface"
+  },
+  {
+    "iface": "lo",
+    "mtu": 65536,
+    "rx_ok": 0,
+    "rx_err": 0,
+    "rx_drp": 0,
+    "rx_ovr": 0,
+    "tx_ok": 0,
+    "tx_err": 0,
+    "tx_drp": 0,
+    "tx_ovr": 0,
+    "flg": "LRU",
+    "kind": "interface"
+  }
+]
 ```
 ### ntpq
 ```

docs/parsers/netstat.md

@@ -203,6 +203,38 @@ Examples:
       }
     ]
 
+    $ netstat -i | jc --netstat -p
+    [
+      {
+        "iface": "ens33",
+        "mtu": 1500,
+        "rx_ok": 476,
+        "rx_err": 0,
+        "rx_drp": 0,
+        "rx_ovr": 0,
+        "tx_ok": 312,
+        "tx_err": 0,
+        "tx_drp": 0,
+        "tx_ovr": 0,
+        "flg": "BMRU",
+        "kind": "interface"
+      },
+      {
+        "iface": "lo",
+        "mtu": 65536,
+        "rx_ok": 0,
+        "rx_err": 0,
+        "rx_drp": 0,
+        "rx_ovr": 0,
+        "tx_ok": 0,
+        "tx_err": 0,
+        "tx_drp": 0,
+        "tx_ovr": 0,
+        "flg": "LRU",
+        "kind": "interface"
+      }
+    ]
+
 ## info
 ```python
 info(self, /, *args, **kwargs)
@@ -275,7 +307,23 @@ Returns:
         "window":            integer,
         "irtt":              integer,
         "iface":             string,
-        "metric":            integer
+        "metric":            integer,
+        "network":           string,
+        "address":           string,
+        "ipkts":             integer,    - = null
+        "ierrs":             integer,    - = null
+        "opkts":             integer,    - = null
+        "oerrs":             integer,    - = null
+        "coll":              integer,    - = null
+        "rx_ok":             integer,
+        "rx_err":            integer,
+        "rx_drp":            integer,
+        "rx_ovr":            integer,
+        "tx_ok":             integer,
+        "tx_err":            integer,
+        "tx_drp":            integer,
+        "tx_ovr":            integer,
+        "flg":               string
       }
     ]
 

jc/parsers/netstat.py

@@ -203,7 +203,36 @@ Examples:
     ]
 
     $ netstat -i | jc --netstat -p
-
+    [
+      {
+        "iface": "ens33",
+        "mtu": 1500,
+        "rx_ok": 476,
+        "rx_err": 0,
+        "rx_drp": 0,
+        "rx_ovr": 0,
+        "tx_ok": 312,
+        "tx_err": 0,
+        "tx_drp": 0,
+        "tx_ovr": 0,
+        "flg": "BMRU",
+        "kind": "interface"
+      },
+      {
+        "iface": "lo",
+        "mtu": 65536,
+        "rx_ok": 0,
+        "rx_err": 0,
+        "rx_drp": 0,
+        "rx_ovr": 0,
+        "tx_ok": 0,
+        "tx_err": 0,
+        "tx_drp": 0,
+        "tx_ovr": 0,
+        "flg": "LRU",
+        "kind": "interface"
+      }
+    ]
 """
 
 
@@ -286,7 +315,6 @@ def process(proc_data):
             "irtt":              integer,
             "iface":             string,
             "metric":            integer,
-
             "network":           string,
             "address":           string,
             "ipkts":             integer,    - = null
@@ -294,6 +322,15 @@ def process(proc_data):
             "opkts":             integer,    - = null
             "oerrs":             integer,    - = null
             "coll":              integer,    - = null
+            "rx_ok":             integer,
+            "rx_err":            integer,
+            "rx_drp":            integer,
+            "rx_ovr":            integer,
+            "tx_ok":             integer,
+            "tx_err":            integer,
+            "tx_drp":            integer,
+            "tx_ovr":            integer,
+            "flg":               string
           }
         ]
     """
@@ -302,7 +339,8 @@ def process(proc_data):
         int_list = ['recv_q', 'send_q', 'pid', 'refcnt', 'inode', 'unit', 'vendor', 'class',
                     'osx_flags', 'subcla', 'pcbcount', 'rcvbuf', 'sndbuf', 'rxbytes', 'txbytes',
                     'route_refs', 'use', 'mtu', 'mss', 'window', 'irtt', 'metric', 'ipkts',
-                    'ierrs', 'opkts', 'oerrs', 'coll']
+                    'ierrs', 'opkts', 'oerrs', 'coll', 'rx_ok', 'rx_err', 'rx_drp', 'rx_ovr',
+                    'tx_ok', 'tx_err', 'tx_drp', 'tx_ovr']
         for key in int_list:
             if key in entry:
                 try:

jc/parsers/netstat_linux.py

@@ -23,6 +23,13 @@ def normalize_route_headers(header):
     return header
 
 
+def normalize_interface_headers(header):
+    header = header.lower()
+    header = header.replace('-', '_')
+
+    return header
+
+
 def parse_network(headers, entry):
     # Count words in header
     # if len of line is one less than len of header, then insert None in field 5
@@ -79,6 +86,14 @@ def parse_route(headers, entry):
     return output_line
 
 
+def parse_interface(headers, entry):
+    entry = entry.split(maxsplit=len(headers) - 1)
+    output_line = dict(zip(headers, entry))
+    output_line['kind'] = 'interface'
+
+    return output_line
+
+
 def parse_post(raw_data):
     # clean up trailing whitespace on each item in each entry
     # flags --- = null
@@ -157,6 +172,7 @@ def parse(cleandata):
     socket = False
     bluetooth = False
     routing_table = False
+    interface_table = False
     headers = None
 
     for line in cleandata:
@@ -166,6 +182,7 @@ def parse(cleandata):
             socket = False
             bluetooth = False
             routing_table = False
+            interface_table = False
             continue
 
         if line.startswith('Active UNIX'):
@@ -173,6 +190,7 @@ def parse(cleandata):
             socket = True
             bluetooth = False
             routing_table = False
+            interface_table = False
             continue
 
         if line.startswith('Active Bluetooth'):
@@ -180,6 +198,7 @@ def parse(cleandata):
             socket = False
             bluetooth = True
             routing_table = False
+            interface_table = False
             continue
 
         if line.startswith('Kernel IP routing table'):
@@ -187,8 +206,18 @@ def parse(cleandata):
             socket = False
             bluetooth = False
             routing_table = True
+            interface_table = False
             continue
 
+        if line.startswith('Kernel Interface table'):
+            network = False
+            socket = False
+            bluetooth = False
+            routing_table = False
+            interface_table = True
+            continue
+
+        # get headers
         if line.startswith('Proto'):
             header_text = normalize_headers(line)
             headers = header_text.split()
@@ -199,6 +228,12 @@ def parse(cleandata):
             headers = header_text.split()
             continue
 
+        if line.startswith('Iface '):
+            header_text = normalize_interface_headers(line)
+            headers = header_text.split()
+            continue
+
+        # parse items
         if network:
             raw_output.append(parse_network(headers, line))
             continue
@@ -215,4 +250,8 @@ def parse(cleandata):
             raw_output.append(parse_route(headers, line))
             continue
 
+        if interface_table:
+            raw_output.append(parse_interface(headers, line))
+            continue
+
     return parse_post(raw_output)

tests/fixtures/centos-7.7/netstat-i.out

@@ -0,0 +1,5 @@
+Kernel Interface table
+Iface             MTU    RX-OK RX-ERR RX-DRP RX-OVR    TX-OK TX-ERR TX-DRP TX-OVR Flg
+docker0          1500        0      0      0 0             0      0      0      0 BMU
+ens33            1500      476      0      0 0           312      0      0      0 BMRU
+lo              65536        0      0      0 0             0      0      0      0 LRU