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https://github.com/torvalds/linux
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2c22542570
ndo_get_peer_dev is used in tcx BPF fast path, therefore make use of indirect call wrapper and therefore optimize the bpf_redirect_peer() internal handling a bit. Add a small skb_get_peer_dev() wrapper which utilizes the INDIRECT_CALL_1() macro instead of open coding. Future work could potentially add a peer pointer directly into struct net_device in future and convert veth and netkit over to use it so that eventually ndo_get_peer_dev can be removed. Co-developed-by: Nikolay Aleksandrov <razor@blackwall.org> Signed-off-by: Nikolay Aleksandrov <razor@blackwall.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Stanislav Fomichev <sdf@google.com> Link: https://lore.kernel.org/r/20231114004220.6495-7-daniel@iogearbox.net Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2023 Isovalent */
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#ifndef __NET_NETKIT_H
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#define __NET_NETKIT_H
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#include <linux/bpf.h>
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#ifdef CONFIG_NETKIT
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int netkit_prog_attach(const union bpf_attr *attr, struct bpf_prog *prog);
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int netkit_link_attach(const union bpf_attr *attr, struct bpf_prog *prog);
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int netkit_prog_detach(const union bpf_attr *attr, struct bpf_prog *prog);
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int netkit_prog_query(const union bpf_attr *attr, union bpf_attr __user *uattr);
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INDIRECT_CALLABLE_DECLARE(struct net_device *netkit_peer_dev(struct net_device *dev));
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#else
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static inline int netkit_prog_attach(const union bpf_attr *attr,
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struct bpf_prog *prog)
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{
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return -EINVAL;
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}
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static inline int netkit_link_attach(const union bpf_attr *attr,
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struct bpf_prog *prog)
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{
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return -EINVAL;
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}
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static inline int netkit_prog_detach(const union bpf_attr *attr,
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struct bpf_prog *prog)
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{
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return -EINVAL;
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}
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static inline int netkit_prog_query(const union bpf_attr *attr,
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union bpf_attr __user *uattr)
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{
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return -EINVAL;
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}
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static inline struct net_device *netkit_peer_dev(struct net_device *dev)
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{
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return NULL;
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}
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#endif /* CONFIG_NETKIT */
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#endif /* __NET_NETKIT_H */
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