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author | Song Yoong Siang <yoong.siang.song@intel.com> | 2023-11-27 22:03:11 +0300 |
---|---|---|
committer | Alexei Starovoitov <ast@kernel.org> | 2023-11-30 01:59:40 +0300 |
commit | 1347b419318d6afa1c86d7865d82ca0a6cdf30ce (patch) | |
tree | bde2e77272746023942585a6e19a6b8975e99db0 /drivers/net/ethernet/stmicro/stmmac/stmmac.h | |
parent | ec706a860eba99bf934d59f74b5db90af44e882e (diff) | |
download | linux-1347b419318d6afa1c86d7865d82ca0a6cdf30ce.tar.xz |
net: stmmac: Add Tx HWTS support to XDP ZC
This patch enables transmit hardware timestamp support to XDP zero copy
via XDP Tx metadata framework.
This patchset is tested with tools/testing/selftests/bpf/xdp_hw_metadata
on Intel Tiger Lake platform. Below are the test steps and results.
Command on DUT:
sudo ./xdp_hw_metadata <interface name>
sudo hwstamp_ctl -i <interface name> -t 1 -r 1
Command on Link Partner:
echo -n xdp | nc -u -q1 <destination IPv4 addr> 9091
Result:
xsk_ring_cons__peek: 1
0x55bbbf08b6d0: rx_desc[2]->addr=8c100 addr=8c100 comp_addr=8c100 EoP
No rx_hash err=-95
rx_timestamp: 1677762688429141540 (sec:1677762688.4291)
HW RX-time: 1677762688429141540 (sec:1677762688.4291) delta to User RX-time sec:0.0003 (250.665 usec)
XDP RX-time: 1677762688429375597 (sec:1677762688.4294) delta to User RX-time sec:0.0000 (16.608 usec)
0x55bbbf08b6d0: ping-pong with csum=561c (want f488) csum_start=34 csum_offset=6
0x55bbbf08b6d0: complete tx idx=2 addr=2008
tx_timestamp: 1677762688431127273 (sec:1677762688.4311)
HW TX-complete-time: 1677762688431127273 (sec:1677762688.4311) delta to User TX-complete-time sec:0.0083 (8331.655 usec)
XDP RX-time: 1677762688429375597 (sec:1677762688.4294) delta to User TX-complete-time sec:0.0101 (10083.331 usec)
HW RX-time: 1677762688429141540 (sec:1677762688.4291) delta to HW TX-complete-time sec:0.0020 (1985.733 usec)
0x55bbbf08b6d0: complete rx idx=130 addr=8c100
Signed-off-by: Song Yoong Siang <yoong.siang.song@intel.com>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/r/20231127190319.1190813-6-sdf@google.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/stmmac.h')
-rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h index cd7a9768de5f..686c94c2e8a7 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h @@ -51,6 +51,7 @@ struct stmmac_tx_info { bool last_segment; bool is_jumbo; enum stmmac_txbuf_type buf_type; + struct xsk_tx_metadata_compl xsk_meta; }; #define STMMAC_TBS_AVAIL BIT(0) @@ -100,6 +101,17 @@ struct stmmac_xdp_buff { struct dma_desc *ndesc; }; +struct stmmac_metadata_request { + struct stmmac_priv *priv; + struct dma_desc *tx_desc; + bool *set_ic; +}; + +struct stmmac_xsk_tx_complete { + struct stmmac_priv *priv; + struct dma_desc *desc; +}; + struct stmmac_rx_queue { u32 rx_count_frames; u32 queue_index; |