On 5/17/15 3:56 AM, Wang Nan wrote:
bpf_load_program() can be used to load bpf program into kernel. To make
loading faster, first try to load without logbuf. Try again with logbuf
if the first try failed.
Signed-off-by: Wang Nan <wangn...@huawei.com>
...
+ attr.insn_cnt = (__u32)insns_cnt;
+ attr.insns = ptr_to_u64((void *) insns);
+ attr.license = ptr_to_u64((void *) license);
unnecessary casts?
+ attr.log_buf = ptr_to_u64(NULL);
+ attr.log_size = 0;
+ attr.log_level = 0;
+ attr.kern_version = kern_version;
+
+ fd = sys_bpf(BPF_PROG_LOAD, &attr, sizeof(attr));
+ if ((fd >= 0) || !log_buf || !log_buf_sz)
unnecessary ()
+ return fd;
+
+ /* Try again with log */
+ attr.log_buf = ptr_to_u64(log_buf);
+ attr.log_size = log_buf_sz;
+ attr.log_level = 1;
+ log_buf[0] = 0;
+ return sys_bpf(BPF_PROG_LOAD, &attr, sizeof(attr));
this part looks good. thank you for addressing the feedback from v1.
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