implement tcx links

This commit adds the initial support for tcx
bpf links.  It adds a new LinkOrder type which
can be used to specify the order of links on a
given attach point.  Currently this only works for
SchedClassifier Programs but will possibly be
extended to other program types in the future.

update public-api

Signed-off-by: astoycos <astoycos@redhat.com>

aya/src/programs/cgroup_device.rs

@@ -77,6 +77,9 @@ impl CgroupDevice {
                 BPF_CGROUP_DEVICE,
                 None,
                 mode.into(),
+                Some(0),
+                None,
+                None,
             )
             .map_err(|(_, io_error)| SyscallError {
                 call: "bpf_link_create",

aya/src/programs/cgroup_skb.rs

@@ -105,6 +105,9 @@ impl CgroupSkb {
                 attach_type,
                 None,
                 mode.into(),
+                Some(0),
+                None,
+                None,
             )
             .map_err(|(_, io_error)| SyscallError {
                 call: "bpf_link_create",

aya/src/programs/cgroup_sock.rs

@@ -83,6 +83,9 @@ impl CgroupSock {
                 attach_type,
                 None,
                 mode.into(),
+                Some(0),
+                None,
+                None,
             )
             .map_err(|(_, io_error)| SyscallError {
                 call: "bpf_link_create",

aya/src/programs/cgroup_sock_addr.rs

@@ -84,6 +84,9 @@ impl CgroupSockAddr {
                 attach_type,
                 None,
                 mode.into(),
+                Some(0),
+                None,
+                None,
             )
             .map_err(|(_, io_error)| SyscallError {
                 call: "bpf_link_create",

aya/src/programs/cgroup_sockopt.rs

@@ -81,6 +81,9 @@ impl CgroupSockopt {
                 attach_type,
                 None,
                 mode.into(),
+                Some(0),
+                None,
+                None,
             )
             .map_err(|(_, io_error)| SyscallError {
                 call: "bpf_link_create",

aya/src/programs/cgroup_sysctl.rs

@@ -76,6 +76,9 @@ impl CgroupSysctl {
                 BPF_CGROUP_SYSCTL,
                 None,
                 mode.into(),
+                Some(0),
+                None,
+                None,
             )
             .map_err(|(_, io_error)| SyscallError {
                 call: "bpf_link_create",

aya/src/programs/extension.rs

@@ -103,6 +103,9 @@ impl Extension {
             BPF_CGROUP_INET_INGRESS,
             Some(btf_id),
             0,
+            None,
+            None,
+            None,
         )
         .map_err(|(_, io_error)| SyscallError {
             call: "bpf_link_create",
@@ -140,6 +143,9 @@ impl Extension {
             BPF_CGROUP_INET_INGRESS,
             Some(btf_id),
             0,
+            None,
+            None,
+            None,
         )
         .map_err(|(_, io_error)| SyscallError {
             call: "bpf_link_create",

aya/src/programs/links.rs

@@ -10,9 +10,12 @@ use std::{
 use thiserror::Error;
 
 use crate::{
-    generated::{bpf_attach_type, BPF_F_ALLOW_MULTI, BPF_F_ALLOW_OVERRIDE},
+    generated::{
+        bpf_attach_type, BPF_F_AFTER, BPF_F_ALLOW_MULTI, BPF_F_ALLOW_OVERRIDE, BPF_F_BEFORE,
+        BPF_F_ID, BPF_F_LINK, BPF_F_REPLACE,
+    },
     pin::PinError,
-    programs::{ProgramError, ProgramFd},
+    programs::{MprogLink, MprogProgram, ProgramError, ProgramFd, ProgramId},
     sys::{bpf_get_object, bpf_pin_object, bpf_prog_attach, bpf_prog_detach, SyscallError},
 };
 
@@ -329,7 +332,7 @@ macro_rules! define_link_wrapper {
         pub struct $wrapper(Option<$base>);
 
         #[allow(dead_code)]
-        // allow dead code since currently XDP is the only consumer of inner and
+        // allow dead code since currently XDP/TC are the only consumers of inner and
         // into_inner
         impl $wrapper {
             fn new(base: $base) -> $wrapper {
@@ -394,6 +397,180 @@ pub enum LinkError {
     SyscallError(#[from] SyscallError),
 }
 
+/// A [`Link`] identifier, which may or may not be owned by aya.
+pub struct LinkId(u32);
+
+impl LinkId {
+    /// A wrapper for an arbitrary loaded link specified by its kernel id,
+    /// unsafe because there is no guarantee provided by aya that the link is
+    /// still loaded or even exists.
+    pub unsafe fn new(id: u32) -> Self {
+        Self(id)
+    }
+}
+
+bitflags::bitflags! {
+    /// Flags which are use to build a set of MprogOptions.
+    #[derive(Clone, Copy, Debug, Default)]
+    pub(crate) struct MprogFlags: u32 {
+        const REPLACE = BPF_F_REPLACE;
+        const BEFORE = BPF_F_BEFORE;
+        const AFTER = BPF_F_AFTER;
+        const ID = BPF_F_ID;
+        const LINK = BPF_F_LINK;
+    }
+}
+
+/// Struct defining the arguments required for interacting with the kernel's
+/// multi-prog API.
+///
+/// # Minimum kernel version
+///
+/// The minimum kernel version required to use this feature is 6.6.
+///
+/// # Example
+///
+///```no_run
+/// # let mut bpf = aya::Ebpf::load(&[])?;
+/// use aya::programs::{tc, SchedClassifier, TcAttachType, tc::TcAttachOptions, LinkOrder};
+///
+/// let prog: &mut SchedClassifier = bpf.program_mut("redirect_ingress").unwrap().try_into()?;
+/// prog.load()?;
+/// let options = TcAttachOptions::tcxoptions(LinkOrder::first());
+/// prog.attach_with_options("eth0", TcAttachType::Ingress, options)?;
+///
+/// # Ok::<(), aya::EbpfError>(())
+/// ```
+#[derive(Debug)]
+pub struct LinkOrder {
+    pub(crate) id: Option<u32>,
+    pub(crate) fd: Option<RawFd>,
+    pub(crate) expected_revision: Option<u64>,
+    pub(crate) flags: MprogFlags,
+}
+
+/// Ensure that default link ordering is to be attached last.
+impl Default for LinkOrder {
+    fn default() -> Self {
+        Self {
+            id: Some(0),
+            fd: None,
+            flags: MprogFlags::AFTER,
+            expected_revision: None,
+        }
+    }
+}
+
+impl LinkOrder {
+    /// Ensure the link is created before all other links at a given attachment point.
+    pub fn first() -> Self {
+        Self {
+            id: Some(0),
+            fd: None,
+            flags: MprogFlags::BEFORE,
+            expected_revision: None,
+        }
+    }
+
+    /// Ensure the link is created after all other links for a given attachment point.
+    pub fn last() -> Self {
+        Self {
+            id: Some(0),
+            fd: None,
+            flags: MprogFlags::AFTER,
+            expected_revision: None,
+        }
+    }
+
+    /// Ensure the link is created before the specified aya-owned link for a given attachment point.
+    pub fn before_link<L: MprogLink>(link: &L) -> Result<Self, LinkError> {
+        Ok(Self {
+            id: None,
+            fd: Some(link.fd()?.as_raw_fd()),
+            flags: MprogFlags::BEFORE | MprogFlags::LINK,
+            expected_revision: None,
+        })
+    }
+
+    /// Ensure the link is created after the specified aya-owned link for a given attachment point.
+    pub fn after_link<L: MprogLink>(link: &L) -> Result<Self, LinkError> {
+        Ok(Self {
+            id: None,
+            fd: Some(link.fd()?.as_raw_fd()),
+            flags: MprogFlags::AFTER | MprogFlags::LINK,
+            expected_revision: None,
+        })
+    }
+
+    /// Ensure the link is created before a link specified by its kernel id for a given attachment point.
+    pub fn before_link_id(id: LinkId) -> Result<Self, LinkError> {
+        Ok(Self {
+            id: Some(id.0),
+            fd: None,
+            flags: MprogFlags::BEFORE | MprogFlags::LINK | MprogFlags::ID,
+            expected_revision: None,
+        })
+    }
+
+    /// Ensure the link is created after a link specified by its kernel id for a given attachment point.
+    pub fn after_link_id(id: LinkId) -> Result<Self, LinkError> {
+        Ok(Self {
+            id: Some(id.0),
+            fd: None,
+            flags: MprogFlags::AFTER | MprogFlags::LINK | MprogFlags::ID,
+            expected_revision: None,
+        })
+    }
+
+    /// Ensure the link is created before the specified aya-owned program for a given attachment point.
+    pub fn before_program<P: MprogProgram>(program: &P) -> Result<Self, ProgramError> {
+        Ok(Self {
+            id: None,
+            fd: Some(program.fd()?.as_raw_fd()),
+            flags: MprogFlags::BEFORE,
+            expected_revision: None,
+        })
+    }
+
+    /// Ensure the link is created after the specified aya-owned program for a given attachment point.
+    pub fn after_program<P: MprogProgram>(program: &P) -> Result<Self, ProgramError> {
+        Ok(Self {
+            id: None,
+            fd: Some(program.fd()?.as_raw_fd()),
+            flags: MprogFlags::AFTER,
+            expected_revision: None,
+        })
+    }
+
+    /// Ensure the link is created before a program specified by its kernel id for a given attachment point.
+    pub fn before_program_id(id: ProgramId) -> Self {
+        Self {
+            id: Some(id.0),
+            fd: None,
+            flags: MprogFlags::BEFORE | MprogFlags::ID,
+            expected_revision: None,
+        }
+    }
+
+    /// Ensure the link is created after a program specified by its kernel id for a given attachment point.
+    pub fn after_program_id(id: ProgramId) -> Self {
+        Self {
+            id: Some(id.0),
+            fd: None,
+            flags: MprogFlags::AFTER | MprogFlags::ID,
+            expected_revision: None,
+        }
+    }
+
+    /// set the expected revision for the link, the revision changes
+    /// with each modification of the list of attached programs. User space
+    /// can pass an expected revision when creating a new link. The kernel
+    /// then rejects the update if the revision has changed.
+    pub fn set_expected_revision(&mut self, revision: u64) {
+        self.expected_revision = Some(revision);
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use std::{cell::RefCell, fs::File, rc::Rc};

aya/src/programs/mod.rs

@@ -80,6 +80,7 @@ use std::{
 use info::impl_info;
 pub use info::{loaded_programs, ProgramInfo, ProgramType};
 use libc::ENOSPC;
+use tc::SchedClassifierLink;
 use thiserror::Error;
 
 // re-export the main items needed to load and attach
@@ -94,7 +95,7 @@ pub use crate::programs::{
     fentry::FEntry,
     fexit::FExit,
     kprobe::{KProbe, KProbeError},
-    links::{CgroupAttachMode, Link},
+    links::{CgroupAttachMode, Link, LinkOrder},
     lirc_mode2::LircMode2,
     lsm::Lsm,
     perf_event::{PerfEvent, PerfEventScope, PerfTypeId, SamplePolicy},
@@ -239,6 +240,19 @@ impl AsFd for ProgramFd {
 }
 
 /// The various eBPF programs.
+/// A [`Program`] identifier, which may or may not be owned by aya.
+pub struct ProgramId(u32);
+
+impl ProgramId {
+    /// A wrapper for an arbitrary loaded program specified by its kernel id,
+    /// unsafe because there is no guarantee provided by aya that the program is
+    /// still loaded or even exists.
+    pub unsafe fn new(id: u32) -> Self {
+        Self(id)
+    }
+}
+
+/// eBPF program type.
 #[derive(Debug)]
 pub enum Program {
     /// A [`KProbe`] program
@@ -797,6 +811,61 @@ impl_fd!(
     CgroupDevice,
 );
 
+/// Defines which [`Program`]s support the kernel's
+/// generic multi-prog API.
+///
+/// # Minimum kernel version
+///
+/// The minimum kernel version required to use this feature is 6.6.
+pub trait MprogProgram {
+    /// Returns a borrowed reference to the file descriptor of a given
+    /// [`Program`] which has support for the kernel's generic multi-prog API.
+    fn fd(&self) -> Result<BorrowedFd<'_>, ProgramError>;
+}
+
+macro_rules! impl_mprog_fd {
+    ($($struct_name:ident),+ $(,)?) => {
+        $(
+            impl MprogProgram for $struct_name {
+                /// Returns the a borrowed reference file descriptor of this Program.
+                fn fd(&self) -> Result<BorrowedFd<'_>, ProgramError> {
+                    Ok(self.fd()?.as_fd())
+                }
+            }
+        )+
+    }
+}
+
+impl_mprog_fd!(SchedClassifier,);
+
+/// Defines which [`Link`]s support the kernel's
+/// generic multi-prog API.
+///
+/// # Minimum kernel version
+///
+/// The minimum kernel version required to use this feature is 6.6.
+pub trait MprogLink {
+    /// Returns a borrowed reference to the file descriptor of a given
+    /// [`Link`] which has support for the kernel's generic multi-prog API.
+    fn fd(&self) -> Result<BorrowedFd<'_>, LinkError>;
+}
+
+macro_rules! impl_mproglink_fd {
+    ($($struct_name:ident),+ $(,)?) => {
+        $(
+            impl MprogLink for $struct_name {
+                /// Returns the a borrowed reference file descriptor of this Program.
+                fn fd(&self) -> Result<BorrowedFd<'_>, LinkError> {
+                    let link: &FdLink = self.try_into()?;
+                    Ok(link.fd.as_fd())
+                }
+            }
+        )+
+    }
+}
+
+impl_mproglink_fd!(SchedClassifierLink);
+
 macro_rules! impl_program_pin{
     ($($struct_name:ident),+ $(,)?) => {
         $(

aya/src/programs/perf_attach.rs

@@ -75,7 +75,16 @@ pub(crate) fn perf_attach(
     fd: crate::MockableFd,
 ) -> Result<PerfLinkInner, ProgramError> {
     if FEATURES.bpf_perf_link() {
-        let link_fd = bpf_link_create(prog_fd, LinkTarget::Fd(fd.as_fd()), BPF_PERF_EVENT, None, 0)
+        let link_fd = bpf_link_create(
+            prog_fd,
+            LinkTarget::Fd(fd.as_fd()),
+            BPF_PERF_EVENT,
+            None,
+            0,
+            None,
+            None,
+            None,
+        )
         .map_err(|(_, io_error)| SyscallError {
             call: "bpf_link_create",
             io_error,

aya/src/programs/sk_lookup.rs

@@ -65,7 +65,16 @@ impl SkLookup {
         let prog_fd = prog_fd.as_fd();
         let netns_fd = netns.as_fd();
 
-        let link_fd = bpf_link_create(prog_fd, LinkTarget::Fd(netns_fd), BPF_SK_LOOKUP, None, 0)
+        let link_fd = bpf_link_create(
+            prog_fd,
+            LinkTarget::Fd(netns_fd),
+            BPF_SK_LOOKUP,
+            None,
+            0,
+            None,
+            None,
+            None,
+        )
         .map_err(|(_, io_error)| SyscallError {
             call: "bpf_link_create",
             io_error,

aya/src/programs/tc.rs

@@ -6,18 +6,26 @@ use std::{
     path::Path,
 };
 
+use log::debug;
 use thiserror::Error;
 
+use super::FdLink;
 use crate::{
     generated::{
-        bpf_prog_type::BPF_PROG_TYPE_SCHED_CLS, TC_H_CLSACT, TC_H_MIN_EGRESS, TC_H_MIN_INGRESS,
+        bpf_attach_type::{self, BPF_TCX_EGRESS, BPF_TCX_INGRESS},
+        bpf_link_type,
+        bpf_prog_type::BPF_PROG_TYPE_SCHED_CLS,
+        TC_H_CLSACT, TC_H_MIN_EGRESS, TC_H_MIN_INGRESS,
+    },
+    programs::{
+        define_link_wrapper, load_program, Link, LinkError, LinkOrder, ProgramData, ProgramError,
     },
-    programs::{define_link_wrapper, load_program, Link, ProgramData, ProgramError},
     sys::{
-        netlink_find_filter_with_name, netlink_qdisc_add_clsact, netlink_qdisc_attach,
+        bpf_link_create, bpf_link_get_info_by_fd, bpf_link_update, netlink_find_filter_with_name,
-        netlink_qdisc_detach,
+        netlink_qdisc_add_clsact, netlink_qdisc_attach, netlink_qdisc_detach, LinkTarget,
+        SyscallError,
     },
-    util::{ifindex_from_ifname, tc_handler_make},
+    util::{ifindex_from_ifname, tc_handler_make, KernelVersion},
     VerifierLogLevel,
 };
 
@@ -89,6 +97,12 @@ pub enum TcError {
     /// the clsact qdisc is already attached
     #[error("the clsact qdisc is already attached")]
     AlreadyAttached,
+    /// tcx links can only be attached to ingress or egress
+    #[error("tcx links can only be attached to ingress or egress")]
+    InvalidTcxAttach,
+    /// program was loaded via tcx not netlink
+    #[error("program was loaded via tcx not netlink")]
+    InvalidTcLink,
 }
 
 impl TcAttachType {
@@ -99,11 +113,43 @@ impl TcAttachType {
             Self::Egress => tc_handler_make(TC_H_CLSACT, TC_H_MIN_EGRESS),
         }
     }
+
+    pub(crate) fn tcx_attach(&self) -> Result<bpf_attach_type, TcError> {
+        match self {
+            Self::Ingress => Ok(BPF_TCX_INGRESS),
+            Self::Egress => Ok(BPF_TCX_EGRESS),
+            Self::Custom(_) => Err(TcError::InvalidTcxAttach),
+        }
+    }
 }
 
-/// Options for SchedClassifier attach
+/// Options for a SchedClassifier attach operation. The options vary based on
-#[derive(Default)]
+/// what is supported by the current kernel. Kernels older than 6.6 must utilize
-pub struct TcOptions {
+/// netlink for attachements, while newer kernels can utilize the modern TCX eBPF
+/// link type which support's the kernel's mprog ordering api.
+pub enum TcAttachOptions {
+    /// Netlink attach options.
+    NlOptions(NlOptions),
+    /// Tcx attach options.
+    TCXOptions(LinkOrder),
+}
+
+impl TcAttachOptions {
+    /// Create a new set of tcx attach options with a specified link ordering
+    pub fn tcxoptions(order: LinkOrder) -> Self {
+        Self::TCXOptions(order)
+    }
+
+    /// Create a new set of netlink attach options with a specified priority and
+    /// handle.
+    pub fn nloptions(nl: NlOptions) -> Self {
+        Self::NlOptions(nl)
+    }
+}
+
+/// Options for SchedClassifier attach via netlink
+#[derive(Debug, Default, Hash, Eq, PartialEq)]
+pub struct NlOptions {
     /// Priority assigned to tc program with lower number = higher priority.
     /// If set to default (0), the system chooses the next highest priority or 49152 if no filters exist yet
     pub priority: u16,
@@ -118,14 +164,16 @@ impl SchedClassifier {
         load_program(BPF_PROG_TYPE_SCHED_CLS, &mut self.data)
     }
 
-    /// Attaches the program to the given `interface` using the default options.
+    /// Attaches the program to the given `interface` using the TCX link
+    /// API in the first position by default, revert to the legacy netlink API otherwise.
+    /// For fine-grain control over link ordering use [`SchedClassifier::attach_with_options`].
     ///
     /// The returned value can be used to detach, see [SchedClassifier::detach].
     ///
     /// # Errors
     ///
-    /// [`TcError::NetlinkError`] is returned if attaching fails. A common cause
+    /// [`TcError::NetlinkError`] is returned if attaching via netlink fails. A
-    /// of failure is not having added the `clsact` qdisc to the given
+    /// common cause of failure is not having added the `clsact` qdisc to the given
     /// interface, see [`qdisc_add_clsact`]
     ///
     pub fn attach(
@@ -133,10 +181,24 @@ impl SchedClassifier {
         interface: &str,
         attach_type: TcAttachType,
     ) -> Result<SchedClassifierLinkId, ProgramError> {
-        self.attach_with_options(interface, attach_type, TcOptions::default())
+        if KernelVersion::current().unwrap() >= KernelVersion::new(6, 6, 0) {
+            debug!("attaching schedClassifier program via txc link API");
+            self.attach_with_options(
+                interface,
+                attach_type,
+                TcAttachOptions::TCXOptions(LinkOrder::default()),
+            )
+        } else {
+            debug!("attaching SchedClassifier program via netlink API");
+            self.attach_with_options(
+                interface,
+                attach_type,
+                TcAttachOptions::NlOptions(NlOptions::default()),
+            )
+        }
     }
 
-    /// Attaches the program to the given `interface` with options defined in [`TcOptions`].
+    /// Attaches the program to the given `interface` with options defined in [`TcAttachOptions`].
     ///
     /// The returned value can be used to detach, see [SchedClassifier::detach].
     ///
@@ -150,11 +212,11 @@ impl SchedClassifier {
         &mut self,
         interface: &str,
         attach_type: TcAttachType,
-        options: TcOptions,
+        options: TcAttachOptions,
     ) -> Result<SchedClassifierLinkId, ProgramError> {
         let if_index = ifindex_from_ifname(interface)
             .map_err(|io_error| TcError::NetlinkError { io_error })?;
-        self.do_attach(if_index as i32, attach_type, options, true)
+        self.do_attach(if_index, attach_type, options, true)
     }
 
     /// Atomically replaces the program referenced by the provided link.
@@ -164,30 +226,58 @@ impl SchedClassifier {
         &mut self,
         link: SchedClassifierLink,
     ) -> Result<SchedClassifierLinkId, ProgramError> {
-        let TcLink {
+        let prog_fd = self.fd()?;
+        let prog_fd = prog_fd.as_fd();
+        match link.into_inner() {
+            TcLinkInner::FdLink(link) => {
+                let fd = link.fd;
+                let link_fd = fd.as_fd();
+
+                bpf_link_update(link_fd.as_fd(), prog_fd, None, 0).map_err(|(_, io_error)| {
+                    SyscallError {
+                        call: "bpf_link_update",
+                        io_error,
+                    }
+                })?;
+
+                self.data
+                    .links
+                    .insert(SchedClassifierLink::new(TcLinkInner::FdLink(FdLink::new(
+                        fd,
+                    ))))
+            }
+            TcLinkInner::NlLink(NlLink {
                 if_index,
                 attach_type,
                 priority,
                 handle,
-        } = link.into_inner();
+            }) => self.do_attach(
-        self.do_attach(if_index, attach_type, TcOptions { priority, handle }, false)
+                if_index,
+                attach_type,
+                TcAttachOptions::NlOptions(NlOptions { priority, handle }),
+                false,
+            ),
+        }
     }
 
     fn do_attach(
         &mut self,
-        if_index: i32,
+        if_index: u32,
         attach_type: TcAttachType,
-        options: TcOptions,
+        options: TcAttachOptions,
         create: bool,
     ) -> Result<SchedClassifierLinkId, ProgramError> {
         let prog_fd = self.fd()?;
         let prog_fd = prog_fd.as_fd();
+
+        match options {
+            TcAttachOptions::NlOptions(options) => {
                 let name = self.data.name.as_deref().unwrap_or_default();
                 // TODO: avoid this unwrap by adding a new error variant.
                 let name = CString::new(name).unwrap();
                 let (priority, handle) = unsafe {
                     netlink_qdisc_attach(
-                if_index,
+                        if_index as i32,
                         &attach_type,
                         prog_fd,
                         &name,
@@ -198,12 +288,38 @@ impl SchedClassifier {
                 }
                 .map_err(|io_error| TcError::NetlinkError { io_error })?;
 
-        self.data.links.insert(SchedClassifierLink::new(TcLink {
+                self.data
+                    .links
+                    .insert(SchedClassifierLink::new(TcLinkInner::NlLink(NlLink {
                         if_index,
                         attach_type,
                         priority,
                         handle,
-        }))
+                    })))
+            }
+            TcAttachOptions::TCXOptions(options) => {
+                let link_fd = bpf_link_create(
+                    prog_fd,
+                    LinkTarget::IfIndex(if_index),
+                    attach_type.tcx_attach()?,
+                    None,
+                    options.flags.bits(),
+                    options.id,
+                    options.fd,
+                    None,
+                )
+                .map_err(|(_, io_error)| SyscallError {
+                    call: "bpf_mprog_attach",
+                    io_error,
+                })?;
+
+                self.data
+                    .links
+                    .insert(SchedClassifierLink::new(TcLinkInner::FdLink(FdLink::new(
+                        link_fd,
+                    ))))
+            }
+        }
     }
 
     /// Detaches the program.
@@ -237,39 +353,111 @@ impl SchedClassifier {
 }
 
 #[derive(Debug, Hash, Eq, PartialEq)]
-pub(crate) struct TcLinkId(i32, TcAttachType, u16, u32);
+pub(crate) struct NlLinkId(u32, TcAttachType, u16, u32);
 
 #[derive(Debug)]
-struct TcLink {
+pub(crate) struct NlLink {
-    if_index: i32,
+    if_index: u32,
     attach_type: TcAttachType,
     priority: u16,
     handle: u32,
 }
 
-impl Link for TcLink {
+impl Link for NlLink {
-    type Id = TcLinkId;
+    type Id = NlLinkId;
 
     fn id(&self) -> Self::Id {
-        TcLinkId(self.if_index, self.attach_type, self.priority, self.handle)
+        NlLinkId(self.if_index, self.attach_type, self.priority, self.handle)
     }
 
     fn detach(self) -> Result<(), ProgramError> {
         unsafe {
-            netlink_qdisc_detach(self.if_index, &self.attach_type, self.priority, self.handle)
+            netlink_qdisc_detach(
+                self.if_index as i32,
+                &self.attach_type,
+                self.priority,
+                self.handle,
+            )
         }
         .map_err(|io_error| TcError::NetlinkError { io_error })?;
         Ok(())
     }
 }
 
+#[derive(Debug, Hash, Eq, PartialEq)]
+pub(crate) enum TcLinkIdInner {
+    FdLinkId(<FdLink as Link>::Id),
+    NlLinkId(<NlLink as Link>::Id),
+}
+
+#[derive(Debug)]
+pub(crate) enum TcLinkInner {
+    FdLink(FdLink),
+    NlLink(NlLink),
+}
+
+impl Link for TcLinkInner {
+    type Id = TcLinkIdInner;
+
+    fn id(&self) -> Self::Id {
+        match self {
+            Self::FdLink(link) => TcLinkIdInner::FdLinkId(link.id()),
+            Self::NlLink(link) => TcLinkIdInner::NlLinkId(link.id()),
+        }
+    }
+
+    fn detach(self) -> Result<(), ProgramError> {
+        match self {
+            Self::FdLink(link) => link.detach(),
+            Self::NlLink(link) => link.detach(),
+        }
+    }
+}
+
+impl<'a> TryFrom<&'a SchedClassifierLink> for &'a FdLink {
+    type Error = LinkError;
+
+    fn try_from(value: &'a SchedClassifierLink) -> Result<Self, Self::Error> {
+        if let TcLinkInner::FdLink(fd) = value.inner() {
+            Ok(fd)
+        } else {
+            Err(LinkError::InvalidLink)
+        }
+    }
+}
+
+impl TryFrom<SchedClassifierLink> for FdLink {
+    type Error = LinkError;
+
+    fn try_from(value: SchedClassifierLink) -> Result<Self, Self::Error> {
+        if let TcLinkInner::FdLink(fd) = value.into_inner() {
+            Ok(fd)
+        } else {
+            Err(LinkError::InvalidLink)
+        }
+    }
+}
+
+impl TryFrom<FdLink> for SchedClassifierLink {
+    type Error = LinkError;
+
+    fn try_from(fd_link: FdLink) -> Result<Self, Self::Error> {
+        // unwrap of fd_link.fd will not panic since it's only None when being dropped.
+        let info = bpf_link_get_info_by_fd(fd_link.fd.as_fd())?;
+        if info.type_ == (bpf_link_type::BPF_LINK_TYPE_TCX as u32) {
+            return Ok(Self::new(TcLinkInner::FdLink(fd_link)));
+        }
+        Err(LinkError::InvalidLink)
+    }
+}
+
 define_link_wrapper!(
     /// The link used by [SchedClassifier] programs.
     SchedClassifierLink,
     /// The type returned by [SchedClassifier::attach]. Can be passed to [SchedClassifier::detach].
     SchedClassifierLinkId,
-    TcLink,
+    TcLinkInner,
-    TcLinkId
+    TcLinkIdInner
 );
 
 impl SchedClassifierLink {
@@ -311,27 +499,39 @@ impl SchedClassifierLink {
         handle: u32,
     ) -> Result<Self, io::Error> {
         let if_index = ifindex_from_ifname(if_name)?;
-        Ok(Self(Some(TcLink {
+        Ok(Self(Some(TcLinkInner::NlLink(NlLink {
-            if_index: if_index as i32,
+            if_index,
             attach_type,
             priority,
             handle,
-        })))
+        }))))
     }
 
     /// Returns the attach type.
-    pub fn attach_type(&self) -> TcAttachType {
+    pub fn attach_type(&self) -> Result<TcAttachType, ProgramError> {
-        self.inner().attach_type
+        if let TcLinkInner::NlLink(n) = self.inner() {
+            Ok(n.attach_type)
+        } else {
+            Err(TcError::InvalidTcLink.into())
+        }
     }
 
     /// Returns the allocated priority. If none was provided at attach time, this was allocated for you.
-    pub fn priority(&self) -> u16 {
+    pub fn priority(&self) -> Result<u16, ProgramError> {
-        self.inner().priority
+        if let TcLinkInner::NlLink(n) = self.inner() {
+            Ok(n.priority)
+        } else {
+            Err(TcError::InvalidTcLink.into())
+        }
     }
 
     /// Returns the assigned handle. If none was provided at attach time, this was allocated for you.
-    pub fn handle(&self) -> u32 {
+    pub fn handle(&self) -> Result<u32, ProgramError> {
-        self.inner().handle
+        if let TcLinkInner::NlLink(n) = self.inner() {
+            Ok(n.handle)
+        } else {
+            Err(TcError::InvalidTcLink.into())
+        }
     }
 }
 

aya/src/programs/xdp.rs

@@ -140,7 +140,7 @@ impl Xdp {
             // if the program has been loaded, i.e. there is an fd. We get one by:
             // - Using `Xdp::from_pin` that sets `expected_attach_type`
             // - Calling `Xdp::attach` that sets `expected_attach_type`, as geting an `Xdp`
-            //   instance trhough `Xdp:try_from(Program)` does not set any fd.
+            //   instance through `Xdp:try_from(Program)` does not set any fd.
             // So, in all cases where we have an fd, we have an expected_attach_type. Thus, if we
             // reach this point, expected_attach_type is guaranteed to be Some(_).
             let attach_type = self.data.expected_attach_type.unwrap();
@@ -150,6 +150,9 @@ impl Xdp {
                 attach_type,
                 None,
                 flags.bits(),
+                None,
+                None,
+                None,
             )
             .map_err(|(_, io_error)| SyscallError {
                 call: "bpf_link_create",

aya/src/sys/bpf.rs

@@ -379,12 +379,16 @@ pub(crate) enum LinkTarget<'f> {
 }
 
 // since kernel 5.7
+#[allow(clippy::too_many_arguments)]
 pub(crate) fn bpf_link_create(
     prog_fd: BorrowedFd<'_>,
     target: LinkTarget<'_>,
     attach_type: bpf_attach_type,
     btf_id: Option<u32>,
     flags: u32,
+    relative_id: Option<u32>,
+    relative_fd: Option<RawFd>,
+    expected_revision: Option<u64>,
 ) -> SysResult<crate::MockableFd> {
     let mut attr = unsafe { mem::zeroed::<bpf_attr>() };
 
@@ -399,11 +403,36 @@ pub(crate) fn bpf_link_create(
         }
     };
     attr.link_create.attach_type = attach_type as u32;
-    attr.link_create.flags = flags;
+
     if let Some(btf_id) = btf_id {
         attr.link_create.__bindgen_anon_3.target_btf_id = btf_id;
     }
 
+    attr.link_create.flags = flags;
+
+    // since kernel 6.6
+    if let Some(expected_revision) = expected_revision {
+        attr.link_create.__bindgen_anon_3.tcx.expected_revision = expected_revision;
+    }
+
+    match (relative_fd, relative_id) {
+        (Some(fd), None) => {
+            attr.link_create
+                .__bindgen_anon_3
+                .tcx
+                .__bindgen_anon_1
+                .relative_fd = fd as u32;
+        }
+        (None, Some(id)) => {
+            attr.link_create
+                .__bindgen_anon_3
+                .tcx
+                .__bindgen_anon_1
+                .relative_id = id;
+        }
+        _ => {}
+    };
+
     // SAFETY: BPF_LINK_CREATE returns a new file descriptor.
     unsafe { fd_sys_bpf(bpf_cmd::BPF_LINK_CREATE, &mut attr) }
 }
@@ -826,7 +855,7 @@ pub(crate) fn is_perf_link_supported() -> bool {
         let fd = fd.as_fd();
         matches!(
             // Uses an invalid target FD so we get EBADF if supported.
-            bpf_link_create(fd, LinkTarget::IfIndex(u32::MAX), bpf_attach_type::BPF_PERF_EVENT, None, 0),
+            bpf_link_create(fd, LinkTarget::IfIndex(u32::MAX), bpf_attach_type::BPF_PERF_EVENT, None, 0, None, None, None),
             // Returns EINVAL if unsupported. EBADF if supported.
             Err((_, e)) if e.raw_os_error() == Some(libc::EBADF),
         )

xtask/public-api/aya.txt

@@ -3929,6 +3929,9 @@ pub fn aya::programs::kprobe::KProbeLink::try_from(fd_link: aya::programs::links
 impl core::convert::TryFrom<aya::programs::links::FdLink> for aya::programs::perf_event::PerfEventLink
 pub type aya::programs::perf_event::PerfEventLink::Error = aya::programs::links::LinkError
 pub fn aya::programs::perf_event::PerfEventLink::try_from(fd_link: aya::programs::links::FdLink) -> core::result::Result<Self, Self::Error>
+impl core::convert::TryFrom<aya::programs::links::FdLink> for aya::programs::tc::SchedClassifierLink
+pub type aya::programs::tc::SchedClassifierLink::Error = aya::programs::links::LinkError
+pub fn aya::programs::tc::SchedClassifierLink::try_from(fd_link: aya::programs::links::FdLink) -> core::result::Result<Self, Self::Error>
 impl core::convert::TryFrom<aya::programs::links::FdLink> for aya::programs::trace_point::TracePointLink
 pub type aya::programs::trace_point::TracePointLink::Error = aya::programs::links::LinkError
 pub fn aya::programs::trace_point::TracePointLink::try_from(fd_link: aya::programs::links::FdLink) -> core::result::Result<Self, Self::Error>
@@ -3941,6 +3944,9 @@ pub fn aya::programs::xdp::XdpLink::try_from(fd_link: aya::programs::links::FdLi
 impl core::convert::TryFrom<aya::programs::perf_event::PerfEventLink> for aya::programs::links::FdLink
 pub type aya::programs::links::FdLink::Error = aya::programs::links::LinkError
 pub fn aya::programs::links::FdLink::try_from(value: aya::programs::perf_event::PerfEventLink) -> core::result::Result<Self, Self::Error>
+impl core::convert::TryFrom<aya::programs::tc::SchedClassifierLink> for aya::programs::links::FdLink
+pub type aya::programs::links::FdLink::Error = aya::programs::links::LinkError
+pub fn aya::programs::links::FdLink::try_from(value: aya::programs::tc::SchedClassifierLink) -> core::result::Result<Self, Self::Error>
 impl core::convert::TryFrom<aya::programs::trace_point::TracePointLink> for aya::programs::links::FdLink
 pub type aya::programs::links::FdLink::Error = aya::programs::links::LinkError
 pub fn aya::programs::links::FdLink::try_from(value: aya::programs::trace_point::TracePointLink) -> core::result::Result<Self, Self::Error>
@@ -3952,6 +3958,9 @@ pub type aya::programs::links::FdLink::Error = aya::programs::links::LinkError
 pub fn aya::programs::links::FdLink::try_from(value: aya::programs::xdp::XdpLink) -> core::result::Result<Self, Self::Error>
 impl core::fmt::Debug for aya::programs::links::FdLink
 pub fn aya::programs::links::FdLink::fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result
+impl<'a> core::convert::TryFrom<&'a aya::programs::tc::SchedClassifierLink> for &'a aya::programs::links::FdLink
+pub type &'a aya::programs::links::FdLink::Error = aya::programs::links::LinkError
+pub fn &'a aya::programs::links::FdLink::try_from(value: &'a aya::programs::tc::SchedClassifierLink) -> core::result::Result<Self, Self::Error>
 impl core::marker::Freeze for aya::programs::links::FdLink
 impl core::marker::Send for aya::programs::links::FdLink
 impl core::marker::Sync for aya::programs::links::FdLink
@@ -4009,6 +4018,70 @@ impl<T> core::borrow::BorrowMut<T> for aya::programs::links::FdLinkId where T: c
 pub fn aya::programs::links::FdLinkId::borrow_mut(&mut self) -> &mut T
 impl<T> core::convert::From<T> for aya::programs::links::FdLinkId
 pub fn aya::programs::links::FdLinkId::from(t: T) -> T
+pub struct aya::programs::links::LinkId(_)
+impl aya::programs::links::LinkId
+pub unsafe fn aya::programs::links::LinkId::new(id: u32) -> Self
+impl core::marker::Freeze for aya::programs::links::LinkId
+impl core::marker::Send for aya::programs::links::LinkId
+impl core::marker::Sync for aya::programs::links::LinkId
+impl core::marker::Unpin for aya::programs::links::LinkId
+impl core::panic::unwind_safe::RefUnwindSafe for aya::programs::links::LinkId
+impl core::panic::unwind_safe::UnwindSafe for aya::programs::links::LinkId
+impl<T, U> core::convert::Into<U> for aya::programs::links::LinkId where U: core::convert::From<T>
+pub fn aya::programs::links::LinkId::into(self) -> U
+impl<T, U> core::convert::TryFrom<U> for aya::programs::links::LinkId where U: core::convert::Into<T>
+pub type aya::programs::links::LinkId::Error = core::convert::Infallible
+pub fn aya::programs::links::LinkId::try_from(value: U) -> core::result::Result<T, <T as core::convert::TryFrom<U>>::Error>
+impl<T, U> core::convert::TryInto<U> for aya::programs::links::LinkId where U: core::convert::TryFrom<T>
+pub type aya::programs::links::LinkId::Error = <U as core::convert::TryFrom<T>>::Error
+pub fn aya::programs::links::LinkId::try_into(self) -> core::result::Result<U, <U as core::convert::TryFrom<T>>::Error>
+impl<T> core::any::Any for aya::programs::links::LinkId where T: 'static + core::marker::Sized
+pub fn aya::programs::links::LinkId::type_id(&self) -> core::any::TypeId
+impl<T> core::borrow::Borrow<T> for aya::programs::links::LinkId where T: core::marker::Sized
+pub fn aya::programs::links::LinkId::borrow(&self) -> &T
+impl<T> core::borrow::BorrowMut<T> for aya::programs::links::LinkId where T: core::marker::Sized
+pub fn aya::programs::links::LinkId::borrow_mut(&mut self) -> &mut T
+impl<T> core::convert::From<T> for aya::programs::links::LinkId
+pub fn aya::programs::links::LinkId::from(t: T) -> T
+pub struct aya::programs::links::LinkOrder
+impl aya::programs::links::LinkOrder
+pub fn aya::programs::links::LinkOrder::after_link<L: aya::programs::MprogLink>(link: &L) -> core::result::Result<Self, aya::programs::links::LinkError>
+pub fn aya::programs::links::LinkOrder::after_link_id(id: aya::programs::links::LinkId) -> core::result::Result<Self, aya::programs::links::LinkError>
+pub fn aya::programs::links::LinkOrder::after_program<P: aya::programs::MprogProgram>(program: &P) -> core::result::Result<Self, aya::programs::ProgramError>
+pub fn aya::programs::links::LinkOrder::after_program_id(id: aya::programs::ProgramId) -> Self
+pub fn aya::programs::links::LinkOrder::before_link<L: aya::programs::MprogLink>(link: &L) -> core::result::Result<Self, aya::programs::links::LinkError>
+pub fn aya::programs::links::LinkOrder::before_link_id(id: aya::programs::links::LinkId) -> core::result::Result<Self, aya::programs::links::LinkError>
+pub fn aya::programs::links::LinkOrder::before_program<P: aya::programs::MprogProgram>(program: &P) -> core::result::Result<Self, aya::programs::ProgramError>
+pub fn aya::programs::links::LinkOrder::before_program_id(id: aya::programs::ProgramId) -> Self
+pub fn aya::programs::links::LinkOrder::first() -> Self
+pub fn aya::programs::links::LinkOrder::last() -> Self
+pub fn aya::programs::links::LinkOrder::set_expected_revision(&mut self, revision: u64)
+impl core::default::Default for aya::programs::links::LinkOrder
+pub fn aya::programs::links::LinkOrder::default() -> Self
+impl core::fmt::Debug for aya::programs::links::LinkOrder
+pub fn aya::programs::links::LinkOrder::fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result
+impl core::marker::Freeze for aya::programs::links::LinkOrder
+impl core::marker::Send for aya::programs::links::LinkOrder
+impl core::marker::Sync for aya::programs::links::LinkOrder
+impl core::marker::Unpin for aya::programs::links::LinkOrder
+impl core::panic::unwind_safe::RefUnwindSafe for aya::programs::links::LinkOrder
+impl core::panic::unwind_safe::UnwindSafe for aya::programs::links::LinkOrder
+impl<T, U> core::convert::Into<U> for aya::programs::links::LinkOrder where U: core::convert::From<T>
+pub fn aya::programs::links::LinkOrder::into(self) -> U
+impl<T, U> core::convert::TryFrom<U> for aya::programs::links::LinkOrder where U: core::convert::Into<T>
+pub type aya::programs::links::LinkOrder::Error = core::convert::Infallible
+pub fn aya::programs::links::LinkOrder::try_from(value: U) -> core::result::Result<T, <T as core::convert::TryFrom<U>>::Error>
+impl<T, U> core::convert::TryInto<U> for aya::programs::links::LinkOrder where U: core::convert::TryFrom<T>
+pub type aya::programs::links::LinkOrder::Error = <U as core::convert::TryFrom<T>>::Error
+pub fn aya::programs::links::LinkOrder::try_into(self) -> core::result::Result<U, <U as core::convert::TryFrom<T>>::Error>
+impl<T> core::any::Any for aya::programs::links::LinkOrder where T: 'static + core::marker::Sized
+pub fn aya::programs::links::LinkOrder::type_id(&self) -> core::any::TypeId
+impl<T> core::borrow::Borrow<T> for aya::programs::links::LinkOrder where T: core::marker::Sized
+pub fn aya::programs::links::LinkOrder::borrow(&self) -> &T
+impl<T> core::borrow::BorrowMut<T> for aya::programs::links::LinkOrder where T: core::marker::Sized
+pub fn aya::programs::links::LinkOrder::borrow_mut(&mut self) -> &mut T
+impl<T> core::convert::From<T> for aya::programs::links::LinkOrder
+pub fn aya::programs::links::LinkOrder::from(t: T) -> T
 pub struct aya::programs::links::PinnedLink
 impl aya::programs::links::PinnedLink
 pub fn aya::programs::links::PinnedLink::from_pin<P: core::convert::AsRef<std::path::Path>>(path: P) -> core::result::Result<Self, aya::programs::links::LinkError>
@@ -5558,6 +5631,34 @@ pub fn aya::programs::socket_filter::SocketFilterLinkId::borrow_mut(&mut self) -
 impl<T> core::convert::From<T> for aya::programs::socket_filter::SocketFilterLinkId
 pub fn aya::programs::socket_filter::SocketFilterLinkId::from(t: T) -> T
 pub mod aya::programs::tc
+pub enum aya::programs::tc::TcAttachOptions
+pub aya::programs::tc::TcAttachOptions::NlOptions(aya::programs::tc::NlOptions)
+pub aya::programs::tc::TcAttachOptions::TCXOptions(aya::programs::links::LinkOrder)
+impl aya::programs::tc::TcAttachOptions
+pub fn aya::programs::tc::TcAttachOptions::nloptions(nl: aya::programs::tc::NlOptions) -> Self
+pub fn aya::programs::tc::TcAttachOptions::tcxoptions(order: aya::programs::links::LinkOrder) -> Self
+impl core::marker::Freeze for aya::programs::tc::TcAttachOptions
+impl core::marker::Send for aya::programs::tc::TcAttachOptions
+impl core::marker::Sync for aya::programs::tc::TcAttachOptions
+impl core::marker::Unpin for aya::programs::tc::TcAttachOptions
+impl core::panic::unwind_safe::RefUnwindSafe for aya::programs::tc::TcAttachOptions
+impl core::panic::unwind_safe::UnwindSafe for aya::programs::tc::TcAttachOptions
+impl<T, U> core::convert::Into<U> for aya::programs::tc::TcAttachOptions where U: core::convert::From<T>
+pub fn aya::programs::tc::TcAttachOptions::into(self) -> U
+impl<T, U> core::convert::TryFrom<U> for aya::programs::tc::TcAttachOptions where U: core::convert::Into<T>
+pub type aya::programs::tc::TcAttachOptions::Error = core::convert::Infallible
+pub fn aya::programs::tc::TcAttachOptions::try_from(value: U) -> core::result::Result<T, <T as core::convert::TryFrom<U>>::Error>
+impl<T, U> core::convert::TryInto<U> for aya::programs::tc::TcAttachOptions where U: core::convert::TryFrom<T>
+pub type aya::programs::tc::TcAttachOptions::Error = <U as core::convert::TryFrom<T>>::Error
+pub fn aya::programs::tc::TcAttachOptions::try_into(self) -> core::result::Result<U, <U as core::convert::TryFrom<T>>::Error>
+impl<T> core::any::Any for aya::programs::tc::TcAttachOptions where T: 'static + core::marker::Sized
+pub fn aya::programs::tc::TcAttachOptions::type_id(&self) -> core::any::TypeId
+impl<T> core::borrow::Borrow<T> for aya::programs::tc::TcAttachOptions where T: core::marker::Sized
+pub fn aya::programs::tc::TcAttachOptions::borrow(&self) -> &T
+impl<T> core::borrow::BorrowMut<T> for aya::programs::tc::TcAttachOptions where T: core::marker::Sized
+pub fn aya::programs::tc::TcAttachOptions::borrow_mut(&mut self) -> &mut T
+impl<T> core::convert::From<T> for aya::programs::tc::TcAttachOptions
+pub fn aya::programs::tc::TcAttachOptions::from(t: T) -> T
 pub enum aya::programs::tc::TcAttachType
 pub aya::programs::tc::TcAttachType::Custom(u32)
 pub aya::programs::tc::TcAttachType::Egress
@@ -5607,6 +5708,8 @@ impl<T> core::convert::From<T> for aya::programs::tc::TcAttachType
 pub fn aya::programs::tc::TcAttachType::from(t: T) -> T
 pub enum aya::programs::tc::TcError
 pub aya::programs::tc::TcError::AlreadyAttached
+pub aya::programs::tc::TcError::InvalidTcLink
+pub aya::programs::tc::TcError::InvalidTcxAttach
 pub aya::programs::tc::TcError::NetlinkError
 pub aya::programs::tc::TcError::NetlinkError::io_error: std::io::error::Error
 impl core::convert::From<aya::programs::tc::TcError> for aya::programs::ProgramError
@@ -5641,11 +5744,50 @@ impl<T> core::borrow::BorrowMut<T> for aya::programs::tc::TcError where T: core:
 pub fn aya::programs::tc::TcError::borrow_mut(&mut self) -> &mut T
 impl<T> core::convert::From<T> for aya::programs::tc::TcError
 pub fn aya::programs::tc::TcError::from(t: T) -> T
+pub struct aya::programs::tc::NlOptions
+pub aya::programs::tc::NlOptions::handle: u32
+pub aya::programs::tc::NlOptions::priority: u16
+impl core::cmp::Eq for aya::programs::tc::NlOptions
+impl core::cmp::PartialEq for aya::programs::tc::NlOptions
+pub fn aya::programs::tc::NlOptions::eq(&self, other: &aya::programs::tc::NlOptions) -> bool
+impl core::default::Default for aya::programs::tc::NlOptions
+pub fn aya::programs::tc::NlOptions::default() -> aya::programs::tc::NlOptions
+impl core::fmt::Debug for aya::programs::tc::NlOptions
+pub fn aya::programs::tc::NlOptions::fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result
+impl core::hash::Hash for aya::programs::tc::NlOptions
+pub fn aya::programs::tc::NlOptions::hash<__H: core::hash::Hasher>(&self, state: &mut __H)
+impl core::marker::StructuralPartialEq for aya::programs::tc::NlOptions
+impl core::marker::Freeze for aya::programs::tc::NlOptions
+impl core::marker::Send for aya::programs::tc::NlOptions
+impl core::marker::Sync for aya::programs::tc::NlOptions
+impl core::marker::Unpin for aya::programs::tc::NlOptions
+impl core::panic::unwind_safe::RefUnwindSafe for aya::programs::tc::NlOptions
+impl core::panic::unwind_safe::UnwindSafe for aya::programs::tc::NlOptions
+impl<Q, K> equivalent::Equivalent<K> for aya::programs::tc::NlOptions where Q: core::cmp::Eq + core::marker::Sized, K: core::borrow::Borrow<Q> + core::marker::Sized
+pub fn aya::programs::tc::NlOptions::equivalent(&self, key: &K) -> bool
+impl<Q, K> hashbrown::Equivalent<K> for aya::programs::tc::NlOptions where Q: core::cmp::Eq + core::marker::Sized, K: core::borrow::Borrow<Q> + core::marker::Sized
+pub fn aya::programs::tc::NlOptions::equivalent(&self, key: &K) -> bool
+impl<T, U> core::convert::Into<U> for aya::programs::tc::NlOptions where U: core::convert::From<T>
+pub fn aya::programs::tc::NlOptions::into(self) -> U
+impl<T, U> core::convert::TryFrom<U> for aya::programs::tc::NlOptions where U: core::convert::Into<T>
+pub type aya::programs::tc::NlOptions::Error = core::convert::Infallible
+pub fn aya::programs::tc::NlOptions::try_from(value: U) -> core::result::Result<T, <T as core::convert::TryFrom<U>>::Error>
+impl<T, U> core::convert::TryInto<U> for aya::programs::tc::NlOptions where U: core::convert::TryFrom<T>
+pub type aya::programs::tc::NlOptions::Error = <U as core::convert::TryFrom<T>>::Error
+pub fn aya::programs::tc::NlOptions::try_into(self) -> core::result::Result<U, <U as core::convert::TryFrom<T>>::Error>
+impl<T> core::any::Any for aya::programs::tc::NlOptions where T: 'static + core::marker::Sized
+pub fn aya::programs::tc::NlOptions::type_id(&self) -> core::any::TypeId
+impl<T> core::borrow::Borrow<T> for aya::programs::tc::NlOptions where T: core::marker::Sized
+pub fn aya::programs::tc::NlOptions::borrow(&self) -> &T
+impl<T> core::borrow::BorrowMut<T> for aya::programs::tc::NlOptions where T: core::marker::Sized
+pub fn aya::programs::tc::NlOptions::borrow_mut(&mut self) -> &mut T
+impl<T> core::convert::From<T> for aya::programs::tc::NlOptions
+pub fn aya::programs::tc::NlOptions::from(t: T) -> T
 pub struct aya::programs::tc::SchedClassifier
 impl aya::programs::tc::SchedClassifier
 pub fn aya::programs::tc::SchedClassifier::attach(&mut self, interface: &str, attach_type: aya::programs::tc::TcAttachType) -> core::result::Result<aya::programs::tc::SchedClassifierLinkId, aya::programs::ProgramError>
 pub fn aya::programs::tc::SchedClassifier::attach_to_link(&mut self, link: aya::programs::tc::SchedClassifierLink) -> core::result::Result<aya::programs::tc::SchedClassifierLinkId, aya::programs::ProgramError>
-pub fn aya::programs::tc::SchedClassifier::attach_with_options(&mut self, interface: &str, attach_type: aya::programs::tc::TcAttachType, options: aya::programs::tc::TcOptions) -> core::result::Result<aya::programs::tc::SchedClassifierLinkId, aya::programs::ProgramError>
+pub fn aya::programs::tc::SchedClassifier::attach_with_options(&mut self, interface: &str, attach_type: aya::programs::tc::TcAttachType, options: aya::programs::tc::TcAttachOptions) -> core::result::Result<aya::programs::tc::SchedClassifierLinkId, aya::programs::ProgramError>
 pub fn aya::programs::tc::SchedClassifier::detach(&mut self, link_id: aya::programs::tc::SchedClassifierLinkId) -> core::result::Result<(), aya::programs::ProgramError>
 pub fn aya::programs::tc::SchedClassifier::from_pin<P: core::convert::AsRef<std::path::Path>>(path: P) -> core::result::Result<Self, aya::programs::ProgramError>
 pub fn aya::programs::tc::SchedClassifier::load(&mut self) -> core::result::Result<(), aya::programs::ProgramError>
@@ -5659,6 +5801,8 @@ pub fn aya::programs::tc::SchedClassifier::pin<P: core::convert::AsRef<std::path
 pub fn aya::programs::tc::SchedClassifier::unpin(self) -> core::result::Result<(), std::io::error::Error>
 impl aya::programs::tc::SchedClassifier
 pub fn aya::programs::tc::SchedClassifier::unload(&mut self) -> core::result::Result<(), aya::programs::ProgramError>
+impl aya::programs::MprogProgram for aya::programs::tc::SchedClassifier
+pub fn aya::programs::tc::SchedClassifier::fd(&self) -> core::result::Result<std::os::fd::owned::BorrowedFd<'_>, aya::programs::ProgramError>
 impl core::fmt::Debug for aya::programs::tc::SchedClassifier
 pub fn aya::programs::tc::SchedClassifier::fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result
 impl core::ops::drop::Drop for aya::programs::tc::SchedClassifier
@@ -5693,18 +5837,29 @@ impl<T> core::convert::From<T> for aya::programs::tc::SchedClassifier
 pub fn aya::programs::tc::SchedClassifier::from(t: T) -> T
 pub struct aya::programs::tc::SchedClassifierLink(_)
 impl aya::programs::tc::SchedClassifierLink
-pub fn aya::programs::tc::SchedClassifierLink::attach_type(&self) -> aya::programs::tc::TcAttachType
+pub fn aya::programs::tc::SchedClassifierLink::attach_type(&self) -> core::result::Result<aya::programs::tc::TcAttachType, aya::programs::ProgramError>
 pub fn aya::programs::tc::SchedClassifierLink::attached(if_name: &str, attach_type: aya::programs::tc::TcAttachType, priority: u16, handle: u32) -> core::result::Result<Self, std::io::error::Error>
-pub fn aya::programs::tc::SchedClassifierLink::handle(&self) -> u32
+pub fn aya::programs::tc::SchedClassifierLink::handle(&self) -> core::result::Result<u32, aya::programs::ProgramError>
-pub fn aya::programs::tc::SchedClassifierLink::priority(&self) -> u16
+pub fn aya::programs::tc::SchedClassifierLink::priority(&self) -> core::result::Result<u16, aya::programs::ProgramError>
+impl aya::programs::MprogLink for aya::programs::tc::SchedClassifierLink
+pub fn aya::programs::tc::SchedClassifierLink::fd(&self) -> core::result::Result<std::os::fd::owned::BorrowedFd<'_>, aya::programs::links::LinkError>
 impl aya::programs::links::Link for aya::programs::tc::SchedClassifierLink
 pub type aya::programs::tc::SchedClassifierLink::Id = aya::programs::tc::SchedClassifierLinkId
 pub fn aya::programs::tc::SchedClassifierLink::detach(self) -> core::result::Result<(), aya::programs::ProgramError>
 pub fn aya::programs::tc::SchedClassifierLink::id(&self) -> Self::Id
+impl core::convert::TryFrom<aya::programs::links::FdLink> for aya::programs::tc::SchedClassifierLink
+pub type aya::programs::tc::SchedClassifierLink::Error = aya::programs::links::LinkError
+pub fn aya::programs::tc::SchedClassifierLink::try_from(fd_link: aya::programs::links::FdLink) -> core::result::Result<Self, Self::Error>
+impl core::convert::TryFrom<aya::programs::tc::SchedClassifierLink> for aya::programs::links::FdLink
+pub type aya::programs::links::FdLink::Error = aya::programs::links::LinkError
+pub fn aya::programs::links::FdLink::try_from(value: aya::programs::tc::SchedClassifierLink) -> core::result::Result<Self, Self::Error>
 impl core::fmt::Debug for aya::programs::tc::SchedClassifierLink
 pub fn aya::programs::tc::SchedClassifierLink::fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result
 impl core::ops::drop::Drop for aya::programs::tc::SchedClassifierLink
 pub fn aya::programs::tc::SchedClassifierLink::drop(&mut self)
+impl<'a> core::convert::TryFrom<&'a aya::programs::tc::SchedClassifierLink> for &'a aya::programs::links::FdLink
+pub type &'a aya::programs::links::FdLink::Error = aya::programs::links::LinkError
+pub fn &'a aya::programs::links::FdLink::try_from(value: &'a aya::programs::tc::SchedClassifierLink) -> core::result::Result<Self, Self::Error>
 impl core::marker::Freeze for aya::programs::tc::SchedClassifierLink
 impl core::marker::Send for aya::programs::tc::SchedClassifierLink
 impl core::marker::Sync for aya::programs::tc::SchedClassifierLink
@@ -5762,33 +5917,6 @@ impl<T> core::borrow::BorrowMut<T> for aya::programs::tc::SchedClassifierLinkId
 pub fn aya::programs::tc::SchedClassifierLinkId::borrow_mut(&mut self) -> &mut T
 impl<T> core::convert::From<T> for aya::programs::tc::SchedClassifierLinkId
 pub fn aya::programs::tc::SchedClassifierLinkId::from(t: T) -> T
-pub struct aya::programs::tc::TcOptions
-pub aya::programs::tc::TcOptions::handle: u32
-pub aya::programs::tc::TcOptions::priority: u16
-impl core::default::Default for aya::programs::tc::TcOptions
-pub fn aya::programs::tc::TcOptions::default() -> aya::programs::tc::TcOptions
-impl core::marker::Freeze for aya::programs::tc::TcOptions
-impl core::marker::Send for aya::programs::tc::TcOptions
-impl core::marker::Sync for aya::programs::tc::TcOptions
-impl core::marker::Unpin for aya::programs::tc::TcOptions
-impl core::panic::unwind_safe::RefUnwindSafe for aya::programs::tc::TcOptions
-impl core::panic::unwind_safe::UnwindSafe for aya::programs::tc::TcOptions
-impl<T, U> core::convert::Into<U> for aya::programs::tc::TcOptions where U: core::convert::From<T>
-pub fn aya::programs::tc::TcOptions::into(self) -> U
-impl<T, U> core::convert::TryFrom<U> for aya::programs::tc::TcOptions where U: core::convert::Into<T>
-pub type aya::programs::tc::TcOptions::Error = core::convert::Infallible
-pub fn aya::programs::tc::TcOptions::try_from(value: U) -> core::result::Result<T, <T as core::convert::TryFrom<U>>::Error>
-impl<T, U> core::convert::TryInto<U> for aya::programs::tc::TcOptions where U: core::convert::TryFrom<T>
-pub type aya::programs::tc::TcOptions::Error = <U as core::convert::TryFrom<T>>::Error
-pub fn aya::programs::tc::TcOptions::try_into(self) -> core::result::Result<U, <U as core::convert::TryFrom<T>>::Error>
-impl<T> core::any::Any for aya::programs::tc::TcOptions where T: 'static + core::marker::Sized
-pub fn aya::programs::tc::TcOptions::type_id(&self) -> core::any::TypeId
-impl<T> core::borrow::Borrow<T> for aya::programs::tc::TcOptions where T: core::marker::Sized
-pub fn aya::programs::tc::TcOptions::borrow(&self) -> &T
-impl<T> core::borrow::BorrowMut<T> for aya::programs::tc::TcOptions where T: core::marker::Sized
-pub fn aya::programs::tc::TcOptions::borrow_mut(&mut self) -> &mut T
-impl<T> core::convert::From<T> for aya::programs::tc::TcOptions
-pub fn aya::programs::tc::TcOptions::from(t: T) -> T
 pub fn aya::programs::tc::qdisc_add_clsact(if_name: &str) -> core::result::Result<(), std::io::error::Error>
 pub fn aya::programs::tc::qdisc_detach_program(if_name: &str, attach_type: aya::programs::tc::TcAttachType, name: &str) -> core::result::Result<(), std::io::error::Error>
 pub mod aya::programs::tp_btf
@@ -7276,6 +7404,8 @@ impl<T> core::convert::From<T> for aya::programs::tc::TcAttachType
 pub fn aya::programs::tc::TcAttachType::from(t: T) -> T
 pub enum aya::programs::TcError
 pub aya::programs::TcError::AlreadyAttached
+pub aya::programs::TcError::InvalidTcLink
+pub aya::programs::TcError::InvalidTcxAttach
 pub aya::programs::TcError::NetlinkError
 pub aya::programs::TcError::NetlinkError::io_error: std::io::error::Error
 impl core::convert::From<aya::programs::tc::TcError> for aya::programs::ProgramError
@@ -7962,6 +8092,45 @@ impl<T> core::borrow::BorrowMut<T> for aya::programs::kprobe::KProbe where T: co
 pub fn aya::programs::kprobe::KProbe::borrow_mut(&mut self) -> &mut T
 impl<T> core::convert::From<T> for aya::programs::kprobe::KProbe
 pub fn aya::programs::kprobe::KProbe::from(t: T) -> T
+pub struct aya::programs::LinkOrder
+impl aya::programs::links::LinkOrder
+pub fn aya::programs::links::LinkOrder::after_link<L: aya::programs::MprogLink>(link: &L) -> core::result::Result<Self, aya::programs::links::LinkError>
+pub fn aya::programs::links::LinkOrder::after_link_id(id: aya::programs::links::LinkId) -> core::result::Result<Self, aya::programs::links::LinkError>
+pub fn aya::programs::links::LinkOrder::after_program<P: aya::programs::MprogProgram>(program: &P) -> core::result::Result<Self, aya::programs::ProgramError>
+pub fn aya::programs::links::LinkOrder::after_program_id(id: aya::programs::ProgramId) -> Self
+pub fn aya::programs::links::LinkOrder::before_link<L: aya::programs::MprogLink>(link: &L) -> core::result::Result<Self, aya::programs::links::LinkError>
+pub fn aya::programs::links::LinkOrder::before_link_id(id: aya::programs::links::LinkId) -> core::result::Result<Self, aya::programs::links::LinkError>
+pub fn aya::programs::links::LinkOrder::before_program<P: aya::programs::MprogProgram>(program: &P) -> core::result::Result<Self, aya::programs::ProgramError>
+pub fn aya::programs::links::LinkOrder::before_program_id(id: aya::programs::ProgramId) -> Self
+pub fn aya::programs::links::LinkOrder::first() -> Self
+pub fn aya::programs::links::LinkOrder::last() -> Self
+pub fn aya::programs::links::LinkOrder::set_expected_revision(&mut self, revision: u64)
+impl core::default::Default for aya::programs::links::LinkOrder
+pub fn aya::programs::links::LinkOrder::default() -> Self
+impl core::fmt::Debug for aya::programs::links::LinkOrder
+pub fn aya::programs::links::LinkOrder::fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result
+impl core::marker::Freeze for aya::programs::links::LinkOrder
+impl core::marker::Send for aya::programs::links::LinkOrder
+impl core::marker::Sync for aya::programs::links::LinkOrder
+impl core::marker::Unpin for aya::programs::links::LinkOrder
+impl core::panic::unwind_safe::RefUnwindSafe for aya::programs::links::LinkOrder
+impl core::panic::unwind_safe::UnwindSafe for aya::programs::links::LinkOrder
+impl<T, U> core::convert::Into<U> for aya::programs::links::LinkOrder where U: core::convert::From<T>
+pub fn aya::programs::links::LinkOrder::into(self) -> U
+impl<T, U> core::convert::TryFrom<U> for aya::programs::links::LinkOrder where U: core::convert::Into<T>
+pub type aya::programs::links::LinkOrder::Error = core::convert::Infallible
+pub fn aya::programs::links::LinkOrder::try_from(value: U) -> core::result::Result<T, <T as core::convert::TryFrom<U>>::Error>
+impl<T, U> core::convert::TryInto<U> for aya::programs::links::LinkOrder where U: core::convert::TryFrom<T>
+pub type aya::programs::links::LinkOrder::Error = <U as core::convert::TryFrom<T>>::Error
+pub fn aya::programs::links::LinkOrder::try_into(self) -> core::result::Result<U, <U as core::convert::TryFrom<T>>::Error>
+impl<T> core::any::Any for aya::programs::links::LinkOrder where T: 'static + core::marker::Sized
+pub fn aya::programs::links::LinkOrder::type_id(&self) -> core::any::TypeId
+impl<T> core::borrow::Borrow<T> for aya::programs::links::LinkOrder where T: core::marker::Sized
+pub fn aya::programs::links::LinkOrder::borrow(&self) -> &T
+impl<T> core::borrow::BorrowMut<T> for aya::programs::links::LinkOrder where T: core::marker::Sized
+pub fn aya::programs::links::LinkOrder::borrow_mut(&mut self) -> &mut T
+impl<T> core::convert::From<T> for aya::programs::links::LinkOrder
+pub fn aya::programs::links::LinkOrder::from(t: T) -> T
 pub struct aya::programs::LircMode2
 impl aya::programs::lirc_mode2::LircMode2
 pub fn aya::programs::lirc_mode2::LircMode2::attach<T: std::os::fd::owned::AsFd>(&mut self, lircdev: T) -> core::result::Result<aya::programs::lirc_mode2::LircLinkId, aya::programs::ProgramError>
@@ -8139,6 +8308,31 @@ impl<T> core::borrow::BorrowMut<T> for aya::programs::ProgramFd where T: core::m
 pub fn aya::programs::ProgramFd::borrow_mut(&mut self) -> &mut T
 impl<T> core::convert::From<T> for aya::programs::ProgramFd
 pub fn aya::programs::ProgramFd::from(t: T) -> T
+pub struct aya::programs::ProgramId(_)
+impl aya::programs::ProgramId
+pub unsafe fn aya::programs::ProgramId::new(id: u32) -> Self
+impl core::marker::Freeze for aya::programs::ProgramId
+impl core::marker::Send for aya::programs::ProgramId
+impl core::marker::Sync for aya::programs::ProgramId
+impl core::marker::Unpin for aya::programs::ProgramId
+impl core::panic::unwind_safe::RefUnwindSafe for aya::programs::ProgramId
+impl core::panic::unwind_safe::UnwindSafe for aya::programs::ProgramId
+impl<T, U> core::convert::Into<U> for aya::programs::ProgramId where U: core::convert::From<T>
+pub fn aya::programs::ProgramId::into(self) -> U
+impl<T, U> core::convert::TryFrom<U> for aya::programs::ProgramId where U: core::convert::Into<T>
+pub type aya::programs::ProgramId::Error = core::convert::Infallible
+pub fn aya::programs::ProgramId::try_from(value: U) -> core::result::Result<T, <T as core::convert::TryFrom<U>>::Error>
+impl<T, U> core::convert::TryInto<U> for aya::programs::ProgramId where U: core::convert::TryFrom<T>
+pub type aya::programs::ProgramId::Error = <U as core::convert::TryFrom<T>>::Error
+pub fn aya::programs::ProgramId::try_into(self) -> core::result::Result<U, <U as core::convert::TryFrom<T>>::Error>
+impl<T> core::any::Any for aya::programs::ProgramId where T: 'static + core::marker::Sized
+pub fn aya::programs::ProgramId::type_id(&self) -> core::any::TypeId
+impl<T> core::borrow::Borrow<T> for aya::programs::ProgramId where T: core::marker::Sized
+pub fn aya::programs::ProgramId::borrow(&self) -> &T
+impl<T> core::borrow::BorrowMut<T> for aya::programs::ProgramId where T: core::marker::Sized
+pub fn aya::programs::ProgramId::borrow_mut(&mut self) -> &mut T
+impl<T> core::convert::From<T> for aya::programs::ProgramId
+pub fn aya::programs::ProgramId::from(t: T) -> T
 pub struct aya::programs::ProgramInfo(_)
 impl aya::programs::ProgramInfo
 pub fn aya::programs::ProgramInfo::btf_id(&self) -> core::option::Option<core::num::nonzero::NonZeroU32>
@@ -8236,7 +8430,7 @@ pub struct aya::programs::SchedClassifier
 impl aya::programs::tc::SchedClassifier
 pub fn aya::programs::tc::SchedClassifier::attach(&mut self, interface: &str, attach_type: aya::programs::tc::TcAttachType) -> core::result::Result<aya::programs::tc::SchedClassifierLinkId, aya::programs::ProgramError>
 pub fn aya::programs::tc::SchedClassifier::attach_to_link(&mut self, link: aya::programs::tc::SchedClassifierLink) -> core::result::Result<aya::programs::tc::SchedClassifierLinkId, aya::programs::ProgramError>
-pub fn aya::programs::tc::SchedClassifier::attach_with_options(&mut self, interface: &str, attach_type: aya::programs::tc::TcAttachType, options: aya::programs::tc::TcOptions) -> core::result::Result<aya::programs::tc::SchedClassifierLinkId, aya::programs::ProgramError>
+pub fn aya::programs::tc::SchedClassifier::attach_with_options(&mut self, interface: &str, attach_type: aya::programs::tc::TcAttachType, options: aya::programs::tc::TcAttachOptions) -> core::result::Result<aya::programs::tc::SchedClassifierLinkId, aya::programs::ProgramError>
 pub fn aya::programs::tc::SchedClassifier::detach(&mut self, link_id: aya::programs::tc::SchedClassifierLinkId) -> core::result::Result<(), aya::programs::ProgramError>
 pub fn aya::programs::tc::SchedClassifier::from_pin<P: core::convert::AsRef<std::path::Path>>(path: P) -> core::result::Result<Self, aya::programs::ProgramError>
 pub fn aya::programs::tc::SchedClassifier::load(&mut self) -> core::result::Result<(), aya::programs::ProgramError>
@@ -8250,6 +8444,8 @@ pub fn aya::programs::tc::SchedClassifier::pin<P: core::convert::AsRef<std::path
 pub fn aya::programs::tc::SchedClassifier::unpin(self) -> core::result::Result<(), std::io::error::Error>
 impl aya::programs::tc::SchedClassifier
 pub fn aya::programs::tc::SchedClassifier::unload(&mut self) -> core::result::Result<(), aya::programs::ProgramError>
+impl aya::programs::MprogProgram for aya::programs::tc::SchedClassifier
+pub fn aya::programs::tc::SchedClassifier::fd(&self) -> core::result::Result<std::os::fd::owned::BorrowedFd<'_>, aya::programs::ProgramError>
 impl core::fmt::Debug for aya::programs::tc::SchedClassifier
 pub fn aya::programs::tc::SchedClassifier::fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result
 impl core::ops::drop::Drop for aya::programs::tc::SchedClassifier
@@ -8899,6 +9095,14 @@ impl aya::programs::links::Link for aya::programs::xdp::XdpLink
 pub type aya::programs::xdp::XdpLink::Id = aya::programs::xdp::XdpLinkId
 pub fn aya::programs::xdp::XdpLink::detach(self) -> core::result::Result<(), aya::programs::ProgramError>
 pub fn aya::programs::xdp::XdpLink::id(&self) -> Self::Id
+pub trait aya::programs::MprogLink
+pub fn aya::programs::MprogLink::fd(&self) -> core::result::Result<std::os::fd::owned::BorrowedFd<'_>, aya::programs::links::LinkError>
+impl aya::programs::MprogLink for aya::programs::tc::SchedClassifierLink
+pub fn aya::programs::tc::SchedClassifierLink::fd(&self) -> core::result::Result<std::os::fd::owned::BorrowedFd<'_>, aya::programs::links::LinkError>
+pub trait aya::programs::MprogProgram
+pub fn aya::programs::MprogProgram::fd(&self) -> core::result::Result<std::os::fd::owned::BorrowedFd<'_>, aya::programs::ProgramError>
+impl aya::programs::MprogProgram for aya::programs::tc::SchedClassifier
+pub fn aya::programs::tc::SchedClassifier::fd(&self) -> core::result::Result<std::os::fd::owned::BorrowedFd<'_>, aya::programs::ProgramError>
 pub fn aya::programs::loaded_programs() -> impl core::iter::traits::iterator::Iterator<Item = core::result::Result<aya::programs::ProgramInfo, aya::programs::ProgramError>>
 pub mod aya::sys
 #[non_exhaustive] pub enum aya::sys::Stats