IW_CUSTOM_MAX
buff = kzalloc(IW_CUSTOM_MAX, GFP_ATOMIC);
p += scnprintf(p, IW_CUSTOM_MAX - (p - buff), "ASSOCINFO(ReqIEs =");
len = (len < IW_CUSTOM_MAX) ? len : IW_CUSTOM_MAX;
p += scnprintf(p, IW_CUSTOM_MAX - (p - buff), " %*ph", len, sec_ie);
p += scnprintf(p, IW_CUSTOM_MAX - (p - buff), ")");
wrqu.data.length = (wrqu.data.length < IW_CUSTOM_MAX) ? wrqu.data.length : IW_CUSTOM_MAX;
.max_tokens = IW_CUSTOM_MAX,