On 21/06/2023 19.02, Stanislav Fomichev wrote:
Two kfuncs, one per hook point:
1. at submit time - bpf_devtx_sb_request_timestamp - to request HW
to put TX timestamp into TX completion descriptors
2. at completion time - bpf_devtx_cp_timestamp - to read out
TX timestamp
[...]
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 08fbd4622ccf..2fdb0731eb67 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
[...]
struct xdp_metadata_ops {
int (*xmo_rx_timestamp)(const struct xdp_md *ctx, u64 *timestamp);
int (*xmo_rx_hash)(const struct xdp_md *ctx, u32 *hash,
enum xdp_rss_hash_type *rss_type);
+ int (*xmo_sb_request_timestamp)(const struct devtx_frame *ctx);
+ int (*xmo_cp_timestamp)(const struct devtx_frame *ctx, u64 *timestamp);
};
The "sb" and "cp" abbreviations, what do they stand for?
--Jesper
