Get speed of all the ports in Linux - linux

Question

Objective:
Main objective is to the details as below (The JSON part I will do ,getting the below information using command is a problem ,from Java I can run once i get the command )
ether_stat_s
{
port_name [16] : **Name** of the Port(**Can get from ifconfig -a** )
port_udev_id; **ID** of the port ( **No idea from where I can get ID** )
mac_address[32] Mac address (**Ifconfig -a** )
int speed; // 1 = 100 Mbps/ 2 = 1Gbps/ 3 = 10 Gbps(**Only know about wlan0 and eth0**)
uint64_t rx_pkts ( **Ifconfig -a**)
uint64_t tx_pkts (**ifconfig -a**)
};
Work So Far:
I have used the below command to get all the ports
command : ifconfig -a
O/p:
docker0 Link encap:Ethernet HWaddr 39:37:7a:bd:33:99
inet addr:1XX.XX.XX.X Bcast:0.0.0.0 Mask:255.255.0.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
eth0 Link encap:Ethernet HWaddr a0:b3:cc:82:a9:b1
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:64836 errors:0 dropped:0 overruns:0 frame:0
TX packets:64836 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:5780566 (5.7 MB) TX bytes:5780566 (5.7 MB)
wlan0 Link encap:Ethernet HWaddr 39:37:7a:bd:33:99
inet addr:1XX.XX.XX.X Bcast:10.0.0.255 Mask:255.255.255.0
inet6 addr: 2601:445:4100:8bf4:76e5:43ff:fe34:c1eb/64 Scope:Global
inet6 addr: fe80::76e5:43ff:fe34:c1eb/64 Scope:Link
inet6 addr: 2601:445:4100:8bf4:2ca2:8b5f:c58e:8fd2/64 Scope:Global
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3204378 errors:0 dropped:0 overruns:0 frame:0
TX packets:2060195 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3719913504 (3.7 GB) TX bytes:583906526 (583.9 MB)
I am able to get Speed of eth0 using ethtool (but it does not give me speed of wlan0 ,docker0,l0) ,I can get speed of wlan0 using iwconfig,but is there any tool such as ethtool which can give me speed of all the ports in my linux .
Also am I going in the right direction on the getting all the port information on linux (ie:Using command ifconfig -a ,or /etc/sbin/network ) .Please can anyone guide me .