github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-24 23:22:31 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

bpf: Prepare the sock_ops ctx and call bpf prog for TX timestamping

Browse Source 
This patch introduces a new bpf_skops_tx_timestamping() function
that prepares the "struct bpf_sock_ops" ctx and then executes the
sockops BPF program.

The subsequent patch will utilize bpf_skops_tx_timestamping() at
the existing TX timestamping kernel callbacks (__sk_tstamp_tx
specifically) to call the sockops BPF program. Later, four callback
points to report information to user space based on this patch will
be introduced.

Signed-off-by: Jason Xing <kerneljasonxing@gmail.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://patch.msgid.link/20250220072940.99994-3-kerneljasonxing@gmail.com
This commit is contained in:
Jason Xing 2025-02-20 15:29:30 +08:00 committed by Martin KaFai Lau
parent 24e82b7c04
commit df600f3b1d
2 changed files with 21 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
include/net/sock.h
View File

@ -2924,6 +2924,13 @@ int sock_set_timestamping(struct sock *sk, int optname,
struct so_timestamping timestamping);
void sock_enable_timestamps(struct sock *sk);
#if defined(CONFIG_CGROUP_BPF)
void bpf_skops_tx_timestamping(struct sock *sk, struct sk_buff *skb, int op);
#else
static inline void bpf_skops_tx_timestamping(struct sock *sk, struct sk_buff *skb, int op)
{
}
#endif
void sock_no_linger(struct sock *sk);
void sock_set_keepalive(struct sock *sk);
void sock_set_priority(struct sock *sk, u32 priority);

14
net/core/sock.c
View File

@ -949,6 +949,20 @@ int sock_set_timestamping(struct sock *sk, int optname,
return 0;
}
#if defined(CONFIG_CGROUP_BPF)
void bpf_skops_tx_timestamping(struct sock *sk, struct sk_buff *skb, int op)
{
struct bpf_sock_ops_kern sock_ops;
memset(&sock_ops, 0, offsetof(struct bpf_sock_ops_kern, temp));
sock_ops.op = op;
sock_ops.is_fullsock = 1;
sock_ops.sk = sk;
bpf_skops_init_skb(&sock_ops, skb, 0);
__cgroup_bpf_run_filter_sock_ops(sk, &sock_ops, CGROUP_SOCK_OPS);
}
#endif
void sock_set_keepalive(struct sock *sk)
{
lock_sock(sk);