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

devnexen · tgross35 · commit 82b748093aa9 · 2026-03-14T07:55:44.000Z
[ref](https://docs.huihoo.com/doxygen/linux/kernel/3.7/structethhdr.html)
diff --git a/libc-test/semver/android.txt b/libc-test/semver/android.txt
@@ -3425,6 +3425,7 @@ epoll_create1
 epoll_ctl
 epoll_event
 epoll_wait
+ethhdr
 eventfd
 eventfd_read
 eventfd_write
diff --git a/libc-test/semver/linux-gnu.txt b/libc-test/semver/linux-gnu.txt
@@ -594,6 +594,7 @@ dlvsym
 eaccess
 endutxent
 epoll_pwait2
+ethhdr
 euidaccess
 execveat
 explicit_bzero
diff --git a/src/unix/linux_like/android/mod.rs b/src/unix/linux_like/android/mod.rs
@@ -46,6 +46,7 @@ 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
 
@@ -615,6 +616,15 @@ s_no_extra_traits! {
         pub ifc_ifcu: __c_anonymous_ifc_ifcu,
     }
 
+    // linux/if_ether.h
+
+    #[repr(C, packed)]
+    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,
+    }
+
     // Internal, for casts to access union fields
     struct sifields_sigchld {
         si_pid: crate::pid_t,
diff --git a/src/unix/linux_like/linux/gnu/mod.rs b/src/unix/linux_like/linux/gnu/mod.rs
@@ -7,6 +7,7 @@ pub type __rlimit_resource_t = c_uint;
 pub type Lmid_t = c_long;
 pub type regoff_t = c_int;
 pub type __kernel_rwf_t = c_int;
+pub type __be16 = crate::__u16;
 
 cfg_if! {
     if #[cfg(doc)] {
@@ -405,6 +406,15 @@ s_no_extra_traits! {
         __glibc_reserved: Padding<[c_char; 32]>,
     }
 
+    // linux/if_ether.h
+
+    #[repr(C, packed)]
+    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,
+    }
+
     // Internal, for casts to access union fields
     struct sifields_sigchld {
         si_pid: crate::pid_t,
