DSA_LOOP_NUM_PORTS  330 drivers/net/dsa/dsa_loop.c #define NUM_FIXED_PHYS	(DSA_LOOP_NUM_PORTS - 2)
DSA_LOOP_NUM_PORTS   18 drivers/net/dsa/dsa_loop.h #define DSA_LOOP_CPU_PORT	(DSA_LOOP_NUM_PORTS - 1)