netmap BUG found on big endian machine

[dongshan]

Hi, 

 

       I have tested netmap on freescale PowerPC board, it is a big endian
machine, when I test the example app pkt-gen， I found one bug, really it is
bug of netmap souce code.

       The commit id is “d39c4411a2129926d262f9faffacaf876392c7cd”, the
bug locates in “netmap_mem2.c, netmap_mem_rings_create()”, you should use 

“*(uint32_t *)(uintptr_t)&ring->nr_buf_size =
NETMAP_BDG_BUF_SIZE(na->nm_mem);” substituting

“*(uint16_t *)(uintptr_t)&ring->nr_buf_size =
NETMAP_BDG_BUF_SIZE(na->nm_mem);”

       Because the outcome of big endian and little endian is different. I
guess the source code is written and tested on intel arch machine. But it is
true it can’t run big endian machine directly.

 

 

Best regards,

Dongshan