diff options
| author | Daniel Borkmann <daniel@iogearbox.net> | 2023-11-14 03:42:18 +0300 |
|---|---|---|
| committer | Martin KaFai Lau <martin.lau@kernel.org> | 2023-11-20 21:15:16 +0300 |
| commit | 2c225425704078282e152ba692649237f78b3d7a (patch) | |
| tree | 4e96deef285ebb130c3d8904010d2920c81160c2 /drivers | |
| parent | 024ee930cb3c9ae49e4266aee89cfde0ebb407e1 (diff) | |
| download | linux-2c225425704078282e152ba692649237f78b3d7a.tar.xz | |
bpf, netkit: Add indirect call wrapper for fetching peer dev
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/netkit.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/netkit.c b/drivers/net/netkit.c index 99de11f9cde5..97bd6705c241 100644 --- a/drivers/net/netkit.c +++ b/drivers/net/netkit.c @@ -7,6 +7,7 @@ #include <linux/filter.h> #include <linux/netfilter_netdev.h> #include <linux/bpf_mprog.h> +#include <linux/indirect_call_wrapper.h> #include <net/netkit.h> #include <net/dst.h> @@ -177,7 +178,7 @@ out: rcu_read_unlock(); } -static struct net_device *netkit_peer_dev(struct net_device *dev) +INDIRECT_CALLABLE_SCOPE struct net_device *netkit_peer_dev(struct net_device *dev) { return rcu_dereference(netkit_priv(dev)->peer); } |