diff options
| author | Jason Xing <kerneljasonxing@gmail.com> | 2025-02-20 15:29:37 +0800 |
|---|---|---|
| committer | Martin KaFai Lau <martin.lau@kernel.org> | 2025-02-20 14:29:43 -0800 |
| commit | b3b81e6b009dd8f85cd3b9c65eb492249c2649a8 (patch) | |
| tree | ab5f6727c4276805bf7dc4b773c2b2636a4e66d0 /include/uapi/linux/bpf.h | |
| parent | 2deaf7f42b8c551e84da20483ca2d4a65c3623b3 (diff) | |
bpf: Add BPF_SOCK_OPS_TSTAMP_ACK_CB callback
Support the ACK case for bpf timestamping.
Add a new sock_ops callback, BPF_SOCK_OPS_TSTAMP_ACK_CB. This
callback will occur at the same timestamping point as the user
space's SCM_TSTAMP_ACK. The BPF program can use it to get the
same SCM_TSTAMP_ACK timestamp without modifying the user-space
application.
This patch extends txstamp_ack to two bits: 1 stands for
SO_TIMESTAMPING mode, 2 bpf extension.
Signed-off-by: Jason Xing <kerneljasonxing@gmail.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250220072940.99994-10-kerneljasonxing@gmail.com
Diffstat (limited to 'include/uapi/linux/bpf.h')
| -rw-r--r-- | include/uapi/linux/bpf.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 72045c242396..cc10104f34a0 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -7044,6 +7044,11 @@ enum { * SK_BPF_CB_TX_TIMESTAMPING feature * is on. */ + BPF_SOCK_OPS_TSTAMP_ACK_CB, /* Called when all the skbs in the + * same sendmsg call are acked + * when SK_BPF_CB_TX_TIMESTAMPING + * feature is on. + */ }; /* List of TCP states. There is a build check in net/ipv4/tcp.c to detect |