Add ioctl() constants for BPF

[equal-l2]

No description provided.

[rust-highfive]

r? @gnzlbg

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[equal-l2]

@bors: try

[bors]

@equal-l2: 🔑 Insufficient privileges: not in try users

[gnzlbg]

@bors: r+

[bors]

📌 Commit 1cf0811 has been approved by gnzlbg

[bors]

⌛ Testing commit 1cf0811 with merge ebbb10e...

[bors]

💔 Test failed - status-azure

[equal-l2]

@gnzlbg Will you try again please?

[gnzlbg]

@bors: r+

[bors]

📌 Commit d2bf673 has been approved by gnzlbg

[bors]

⌛ Testing commit d2bf673 with merge 1a9f1e9...

[bors]

💔 Test failed - status-azure

[equal-l2]

bad BIOCSETF value at byte 2: rust: 16 (0x10) != c 8 (0x8)
bad BIOCSRTIMEOUT value at byte 2: rust: 16 (0x10) != c 8 (0x8)
bad BIOCGRTIMEOUT value at byte 2: rust: 16 (0x10) != c 8 (0x8)
bad BIOCSETFNR value at byte 2: rust: 16 (0x10) != c 8 (0x8)

I'll fix this soon.

[equal-l2]

For future reference:

These constants are defined as below:

#define BIOCSETF        _IOW('B',103, struct bpf_program)
#define BIOCSRTIMEOUT   _IOW('B',109, struct timeval)
#define BIOCGRTIMEOUT   _IOR('B',110, struct timeval)
#define BIOCSETFNR      _IOW('B', 126, struct bpf_program)

struct bpf_program is this:

struct bpf_program {
	u_int bf_len;
	struct bpf_insn *bf_insns;
};

And struct timeval:

_STRUCT_TIMEVAL
{
	__darwin_time_t         tv_sec;         /* seconds */
	__darwin_suseconds_t    tv_usec;        /* and microseconds */
};

(__darwin_time_t is long, __darwin_suseconds_t is __int32_t)

The problem is that size of pointer and long differs between 32-bit and 64-bit.

EDIT: The size of bpf_program is 16 (including 4 bytes padding) on 64-bit and 8 on 32-bit system.
The same is timeval.

[gnzlbg]

@bors: r+

[bors]

📌 Commit cf1a3e1 has been approved by gnzlbg

[bors]

⌛ Testing commit cf1a3e1 with merge ec3f080...

[bors]

💔 Test failed - status-azure

[gnzlbg]

@bors: retry

[bors]

⌛ Testing commit cf1a3e1 with merge abd5a3c...

[bors]

☀️ Test successful - checks-cirrus-freebsd-11, checks-cirrus-freebsd-12, status-azure
Approved by: gnzlbg
Pushing abd5a3c to master...

[semarie]

it broke OpenBSD. several of them are not defined on it