Optimization of Lookup Schemes for Flow-Based Packet Classification on FPGAs

Algorithm 1

Ruleset population algorithm for IND.

Require: Range bounds for all UVs at each chunk, number of rules

 (1)   for   to   do

 (2)   

    // simulate lookups for each rule and build BV

 (3) for   to  do

 (4)   for   to   do

 (5)    if    and    then

 (6)       or  

 (7)     end if

 (8)   end for

     // check if BV already exists for other key value

 (9)    

 (10)  while    and    do

 (11)   

 (12)  end while

      // if BV not found, increment UR counter

 (13)  if    then

 (14)   

 (15)  end if

      // store UR and BV for current key value. Just will be transferred to lookup engine (FPGA)

 (16)  

 (17)  

 (18) end for

 (19) 

 (20) end for