prc64;    Packets Received (64 bytes)
prc127;   Packets Received (65-127 bytes)
prc255;   Packets Received (128-255 bytes)
prc511;   Packets Received (255-511 bytes)
prc1023;  Packets Received (512-1023 bytes)
prc1522;  Packets Received (1024-1522 bytes)
tpr;      Total Packets Received
torl;     Total Octets Received
torh;     
gprc;     Good Packets Received
gorcl;    Good Octets Received
gorch;    
bprc;     Broadcast Packets Received
mprc;     Multicast Packets Received

ptc64;    Packets Transmitted (64 bytes)
ptc127;   Packets Transmitted (65-127 bytes)
ptc255;   Packets Transmitted (128-255 bytes)
ptc511;   Packets Transmitted (256-511 bytes)
ptc1023;  Packets Transmitted (512-1023 bytes)
ptc1522;  Packets Transmitted (1024-1522 Bytes)
mptc;     Multicast Packets Transmitted
bptc;     Broadcast Packets Transmitted
tpt;      Total Packets Transmitted
totl;     Total Octets Transmitted
toth;     
gptc;     Good Packets Transmitted
gotcl;    Good Octets Transmitted
gotch;    

mgprc;    Management Packets Received
mgpdc;    Management Packets Dropped
mgptc;    Management Packets Transmitted

xonrxc;   XON Received
xontxc;   XON Transmitted
xoffrxc;  XOFF Received
xofftxc;  XOFF Transmitted

[RX errors is sum of these]
rxerrc;   *Receive Errors
algnerrc; *Alignment Errors
crcerrs;  CRC Errors
rlec;     Receive Length Errors
rnbc;     Receive No Buffers
mpc;      Missed Packets
cexterr;  *Carrier Extension Errors

ruc;      Receive Undersize
rfc;      Receive Fragment
roc;      Receive Oversize
rjc;      Receive Jabber

[TX errors is sum of these]
ecol;     Excessive Collisions
latecol;  Late Collisions

scc;      Single Collisions
mcc;      Multiple Collisions
colc;     Collisions
dc;       Defer Count

symerrs;  Symbol Errors
tncrs;    *Transmit-No CRS
sec;      Sequence Errors
fcruc;    Flow Control Receive Unsupported
tsctc;    *TCP Segmentation Context Transmit
tsctfc;   *TCP Segmentation Context Transmit Fail
          
* means if (adapter->hw.mac_type >= em_82543) 