adding ethhdr type for linux/android for proper packet filtering.

Author: devnexen

libc-test/semver/android.txt

@@ -3230,6 +3230,7 @@ epoll_create1
 epoll_ctl
 epoll_event
 epoll_wait
+ethhdr
 eventfd
 eventfd_read
 eventfd_write

libc-test/semver/linux.txt

@@ -3722,6 +3722,7 @@ epoll_params
 epoll_pwait
 epoll_wait
 erand48
+ethhdr
 eventfd
 eventfd_read
 eventfd_write

src/unix/linux_like/android/mod.rs

@@ -34,6 +34,7 @@ pub type __u16 = c_ushort;
 pub type __s16 = c_short;
 pub type __u32 = c_uint;
 pub type __s32 = c_int;
+pub type __be16 = __u16;
 
 // linux/elf.h
 
@@ -638,6 +639,13 @@ s_no_extra_traits! {
  pub ifc_len: c_int,
  pub ifc_ifcu: __c_anonymous_ifc_ifcu,
  }
+
+ #[repr(C)]
+ pub struct ethhdr {
+ pub h_dest: [c_uchar; crate::ETH_ALEN as usize],
+ pub h_source: [c_uchar; crate::ETH_ALEN as usize],
+ pub h_proto: crate::__be16,
+ }
 }
 
 cfg_if! {
@@ -1020,6 +1028,33 @@ cfg_if! {
  .finish()
  }
  }
+
+ impl Eq for ethhdr {}
+
+ impl PartialEq for ethhdr {
+ fn eq(&self, other: &ethhdr) -> bool {
+ self.h_dest
+ .iter()
+ .zip(other.h_dest.iter())
+ .all(|(a, b)| a == b)
+ && self
+ .h_source
+ .iter()
+ .zip(other.h_source.iter())
+ .all(|(a, b)| a == b)
+ && self.h_proto == other.h_proto
+ }
+ }
+
+ impl fmt::Debug for ethhdr {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ f.debug_struct("ethhdr")
+ .field("h_dest", &self.h_dest)
+ .field("h_source", &self.h_source)
+ .field("h_proto", &{ self.h_proto })
+ .finish()
+ }
+ }
  }
 }
 

src/unix/linux_like/linux/mod.rs

@@ -28,6 +28,7 @@ pub type __u16 = c_ushort;
 pub type __s16 = c_short;
 pub type __u32 = c_uint;
 pub type __s32 = c_int;
+pub type __be16 = __u16;
 
 pub type Elf32_Half = u16;
 pub type Elf32_Word = u32;
@@ -1784,6 +1785,13 @@ s_no_extra_traits! {
  pub request: xsk_tx_metadata_request,
  pub completion: xsk_tx_metadata_completion,
  }
+
+ #[repr(C)]
+ pub struct ethhdr {
+ pub h_dest: [c_uchar; crate::ETH_ALEN as usize],
+ pub h_source: [c_uchar; crate::ETH_ALEN as usize],
+ pub h_proto: crate::__be16,
+ }
 }
 
 cfg_if! {
@@ -2211,6 +2219,33 @@ cfg_if! {
  .finish()
  }
  }
+
+ impl Eq for ethhdr {}
+
+ impl PartialEq for ethhdr {
+ fn eq(&self, other: &ethhdr) -> bool {
+ self.h_dest
+ .iter()
+ .zip(other.h_dest.iter())
+ .all(|(a, b)| a == b)
+ && self
+ .h_source
+ .iter()
+ .zip(other.h_source.iter())
+ .all(|(a, b)| a == b)
+ && self.h_proto == other.h_proto
+ }
+ }
+
+ impl fmt::Debug for ethhdr {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ f.debug_struct("ethhdr")
+ .field("h_dest", &self.h_dest)
+ .field("h_source", &self.h_source)
+ .field("h_proto", &{ self.h_proto })
+ .finish()
+ }
+ }
  }
 }