[dpdk-dev] Pktgen-DPDK build errors on ppc64le

[Rahul Lakkireddy]

Hi All,

We are seeing Pktgen-DPDK not building on ppc64le with latest dpdk git
repo.

Below build errors are seen:
-------------------------
[pktgen-dpdk]# make
== lib
== common
  CC l2p.o
In file included from /root/pktgen-dpdk/lib/common/l2p.c:88:0:
/root/pktgen-dpdk/lib/common/l2p.h: In function ‘pg_raw_dump_l2p’:
/root/pktgen-dpdk/lib/common/l2p.h:103:2: error: comparison is always true due to limited range of data type [-Werror=type-limits]
  for (i = 0; i  < RTE_MAX_LCORE; i++)
  ^
/root/pktgen-dpdk/lib/common/l2p.h:109:2: error: comparison is always true due to limited range of data type [-Werror=type-limits]
  for (j = 0; j < RTE_MAX_LCORE; j++) {
  ^
/root/pktgen-dpdk/lib/common/l2p.h: In function ‘pg_dump_l2p’:
/root/pktgen-dpdk/lib/common/l2p.h:486:2: error: comparison is always true due to limited range of data type [-Werror=type-limits]
  for (lid = 0; lid < RTE_MAX_LCORE; lid++) {
  ^
/root/pktgen-dpdk/lib/common/l2p.c: In function ‘pg_port_matrix_dump’:
/root/pktgen-dpdk/lib/common/l2p.c:477:3: error: large integer implicitly truncated to unsigned type [-Werror=overflow]
   cnt.rxtx = get_map(l2p, pid, RTE_MAX_LCORE);
   ^
/root/pktgen-dpdk/lib/common/l2p.c:488:3: error: large integer implicitly truncated to unsigned type [-Werror=overflow]
   cnt.rxtx = get_map(l2p, pid, RTE_MAX_LCORE);
   ^
cc1: all warnings being treated as errors
make[3]: *** [l2p.o] Error 1
make[2]: *** [all] Error 2
make[1]: *** [common] Error 2
make: *** [lib] Error 2
-------------------------

By changing CONFIG_RTE_MAX_LCORE to 128 in defconfig_ppc_64-power8-linuxapp-gcc
file, Pktgen-DPDK then builds fine.

Thanks,
Rahul