Added TPACKET_* macro definitions

Author: nathaniel-bennett

libc-test/build.rs

@@ -3377,6 +3377,8 @@ fn test_linux(target: &str) {
             // FIXME: This is actually a union, not a struct
             "sigval" => true,
 
+            "fanout_args" if musl => true,
+
             // This type is tested in the `linux_termios.rs` file since there
             // are header conflicts when including them with all the other
             // structs.

src/unix/linux_like/linux/mod.rs

@@ -2917,6 +2917,17 @@ pub const TP_STATUS_TS_SOFTWARE: ::__u32 = 1 << 29;
 pub const TP_STATUS_TS_SYS_HARDWARE: ::__u32 = 1 << 30;
 pub const TP_STATUS_TS_RAW_HARDWARE: ::__u32 = 1 << 31;
 
+pub const TPACKET_ALIGNMENT: usize = 16;
+pub const TPACKET_HDRLEN: usize = ((core::mem::size_of::<::tpacket_hdr>() + TPACKET_ALIGNMENT - 1)
+    & !(TPACKET_ALIGNMENT - 1))
+    + core::mem::size_of::<::sockaddr_ll>();
+pub const TPACKET2_HDRLEN: usize =
+    ((core::mem::size_of::<::tpacket2_hdr>() + TPACKET_ALIGNMENT - 1) & !(TPACKET_ALIGNMENT - 1))
+        + core::mem::size_of::<::sockaddr_ll>();
+pub const TPACKET3_HDRLEN: usize =
+    ((core::mem::size_of::<::tpacket3_hdr>() + TPACKET_ALIGNMENT - 1) & !(TPACKET_ALIGNMENT - 1))
+        + core::mem::size_of::<::sockaddr_ll>();
+
 // linux/netfilter.h
 pub const NF_DROP: ::c_int = 0;
 pub const NF_ACCEPT: ::c_int = 1;
@@ -4214,6 +4225,10 @@ f! {
         ee.offset(1) as *mut ::sockaddr
     }
 
+    pub fn TPACKET_ALIGN(x: usize) -> usize {
+        (x + TPACKET_ALIGNMENT - 1) & !(TPACKET_ALIGNMENT - 1)
+    }
+
     pub fn BPF_RVAL(code: ::__u32) -> ::__u32 {
         code & 0x18
     }