v2..v3 Restore the original timestamp fix and description instead of tracking frame boundaries. Patch 2 carries Maciej's AF_XDP buffer-size fix unchanged.
v1..v2 Changed commit message in attempt to satisfy bots. No code changes. Maciej's patch: https://lore.kernel.org/all/at+t%2FjHczGvyXKRN@boxer/ # # REPRO # # Receiver: igc / enp1s0 / 10.0.5.175 # Sender: RTL8125B / enP4p65s0 / 10.0.5.165 # Both hosts sudo ip link set dev enp1s0 mtu 9000 sudo ip link set dev enP4p65s0 mtu 9000 # Baseline: RX timestamping off sudo hwstamp_ctl -i enp1s0 -t 0 -r 0 ping -n -M do -c 5 -s 8972 10.0.5.175 # 5/5 received # Enable RX timestamping only sudo hwstamp_ctl -i enp1s0 -t 0 -r 1 # Receiver sudo timeout 20 tcpdump -ni enp1s0 -s 0 -w /tmp/igc-jumbo.pcap \ 'icmp and host 10.0.5.165' # Sender ping -n -M do -c 5 -W 2 -s 8972 10.0.5.175 # 0/5 received # Receiver sudo tcpdump -nn -e -vvv -r /tmp/igc-jumbo.pcap # length 8950 # [total length 9000 > length 8936] (invalid) # wrong icmp cksum # Expected Ethernet length: 9014 # Captured length: 8950 # Loss: 64 = 4 continuation buffers * 16 bytes # Disable RX timestamping again sudo hwstamp_ctl -i enp1s0 -t 0 -r 0 ping -n -M do -c 5 -s 8972 10.0.5.175 # 5/5 received -- 2.56.GIT
