add openbsd

iroh-net/src/net/interfaces/bsd.rs

@@ -25,6 +25,10 @@ pub(crate) use self::freebsd::*;
 mod netbsd;
 #[cfg(target_os = "netbsd")]
 pub(crate) use self::netbsd::*;
+#[cfg(target_os = "openbsd")]
+mod openbsd;
+#[cfg(target_os = "openbsd")]
+pub(crate) use self::openbsd::*;
 
 #[cfg(any(target_os = "macos", target_os = "ios"))]
 mod macos;

iroh-net/src/net/interfaces/bsd/freebsd.rs

@@ -5,8 +5,6 @@ use libc::c_int;
 // Missing constants from libc.
 // https://github.com/rust-lang/libc/issues/3711
 
-pub const LOCAL_PEERCRED: c_int = 1;
-
 // net/route.h
 pub const RTF_GATEWAY: c_int = 0x2;
 pub const RTAX_DST: c_int = 0;

iroh-net/src/net/interfaces/bsd/netbsd.rs

@@ -5,8 +5,6 @@ use libc::c_int;
 // Missing constants from libc.
 // https://github.com/rust-lang/libc/issues/3711
 
-pub const LOCAL_PEERCRED: c_int = 1;
-
 // net/route.h
 pub const RTF_GATEWAY: c_int = 0x2;
 pub const RTAX_DST: c_int = 0;

iroh-net/src/net/interfaces/bsd/openbsd.rs

@@ -0,0 +1,96 @@
+use super::{MessageType, RoutingStack, WireFormat};
+
+use libc::c_int;
+
+// Missing constants from libc.
+// https://github.com/rust-lang/libc/issues/3711
+
+// net/route.h
+pub const RTF_GATEWAY: c_int = 0x2;
+pub const RTAX_DST: c_int = 0;
+pub const RTAX_GATEWAY: c_int = 1;
+pub const RTAX_NETMASK: c_int = 2;
+pub const RTAX_IFP: c_int = 4;
+pub const RTAX_BRD: c_int = 7;
+pub const RTAX_MAX: c_int = 8;
+pub const RTM_VERSION: c_int = 5;
+pub const RTA_DST: c_int = 0x1;
+pub const RTA_GATEWAY: c_int = 0x2;
+pub const RTA_NETMASK: c_int = 0x4;
+pub const RTA_GENMASK: c_int = 0x8;
+pub const RTA_IFP: c_int = 0x10;
+pub const RTA_IFA: c_int = 0x20;
+pub const RTA_AUTHOR: c_int = 0x40;
+pub const RTA_BRD: c_int = 0x80;
+
+// Message types
+pub const RTM_ADD: c_int = 0x1;
+pub const RTM_DELETE: c_int = 0x2;
+pub const RTM_CHANGE: c_int = 0x3;
+pub const RTM_GET: c_int = 0x4;
+pub const RTM_LOSING: c_int = 0x5;
+pub const RTM_REDIRECT: c_int = 0x6;
+pub const RTM_MISS: c_int = 0x7;
+pub const RTM_RESOLVE: c_int = 0xb;
+pub const RTM_NEWADDR: c_int = 0xc;
+pub const RTM_DELADDR: c_int = 0xd;
+pub const RTM_IFINFO: c_int = 0xe;
+pub const RTM_IFANNOUNCE: c_int = 0xf;
+pub const RTM_DESYNC: c_int = 0x10;
+pub const RTM_INVALIDATE: c_int = 0x11;
+
+pub const SHUT_RD: c_int = 0;
+pub const SHUT_WR: c_int = 1;
+pub const SHUT_RDWR: c_int = 2;
+
+// Hardcoded based on the generated values here: https://cs.opensource.google/go/x/net/+/master:route/sys_openbsd.go
+
+pub(super) fn probe_routing_stack() -> RoutingStack {
+    let rtm_version = RTM_VERSION;
+
+    let rtm = WireFormat {
+        ext_off: 0,
+        body_off: 0,
+        typ: MessageType::Route,
+    };
+    let ifm = WireFormat {
+        ext_off: 0,
+        body_off: 0,
+        typ: MessageType::Interface,
+    };
+    let ifam = WireFormat {
+        ext_off: 0,
+        body_off: 0,
+        typ: MessageType::InterfaceAddr,
+    };
+    let ifannm = WireFormat {
+        ext_off: 0,
+        body_off: 0,
+        typ: MessageType::InterfaceAnnounce,
+    };
+
+    let wire_formats = [
+        (RTM_ADD, rtm),
+        (RTM_DELETE, rtm),
+        (RTM_CHANGE, rtm),
+        (RTM_GET, rtm),
+        (RTM_LOSING, rtm),
+        (RTM_REDIRECT, rtm),
+        (RTM_MISS, rtm),
+        (RTM_RESOLVE, rtm),
+        (RTM_NEWADDR, ifam),
+        (RTM_DELADDR, ifam),
+        (RTM_IFINFO, ifm),
+        (RTM_IFANNOUNCE, ifannm),
+        (RTM_DESYNC, ifannm),
+    ]
+    .into_iter()
+    .collect();
+
+    // NetBSD 6 and above kernels require 64-bit aligned access to routing facilities.
+    RoutingStack {
+        rtm_version,
+        wire_formats,
+        kernel_align: 8,
+    }
+}