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authorMartin KaFai Lau <martin.lau@kernel.org>2022-11-08 02:04:18 +0300
committerAndrii Nakryiko <andrii@kernel.org>2022-11-12 00:18:14 +0300
commit9bb053490f1a5a0914eb9f7b4116a0e4a95d4f8e (patch)
treea44f6c828d0f65af2efde01d4149bc8ffcfa6c92 /tools/include
parente4c9cf0ce8c413c2030e8fb215551d7e0582ee7b (diff)
downloadlinux-9bb053490f1a5a0914eb9f7b4116a0e4a95d4f8e.tar.xz
bpf: Add hwtstamp field for the sockops prog
The bpf-tc prog has already been able to access the skb_hwtstamps(skb)->hwtstamp. This patch extends the same hwtstamp access to the sockops prog. In sockops, the skb is also available to the bpf prog during the BPF_SOCK_OPS_PARSE_HDR_OPT_CB event. There is a use case that the hwtstamp will be useful to the sockops prog to better measure the one-way-delay when the sender has put the tx timestamp in the tcp header option. Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20221107230420.4192307-2-martin.lau@linux.dev
Diffstat (limited to 'tools/include')
-rw-r--r--tools/include/uapi/linux/bpf.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 94659f6b3395..fb4c911d2a03 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -6445,6 +6445,7 @@ struct bpf_sock_ops {
* the outgoing header has not
* been written yet.
*/
+ __u64 skb_hwtstamp;
};
/* Definitions for bpf_sock_ops_cb_flags */