This series contains fixes and improvements for virtio-net RSS and hash reporting feature.
V7 -> V8: Reset author email addresses. Rebased. V6 -> V7: Dropped patch "virtio-net: Do not clear VIRTIO_NET_F_HASH_REPORT". Dropped the changes to remove packet flags. Re-introduced tap_receive() and changed it to call tap_receive_iov(). Removed tap_get_vnet_hdr_len(). Fixed tap initialization not to call tap_fd_set_vnet_hdr_len() for tap without virtio-net header. Changed to call error_report() instead of warn_report() for programming errors. V5 -> V6: Corrected the message for patch "virtio-net: Return an error when vhost cannot enable RSS". Removed changes to introduce asserts from "virtio-net: Return an error when vhost cannot enable RSS". Reorganized patches "virtio-net: Return an error when vhost cannot enable RSS" and "virtio-net: Do not clear VIRTIO_NET_F_RSS". This version now contains patches "virtio-net: Return an error when vhost cannot enable RSS" and "virtio-net: Enable software RSS". Rebased. V4 -> V5: Added patch "virtio-net: Do not write hashes to peer buffer". V3 -> V4: Extract patches "tap: Remove tap_receive()" and "net: Remove flag propagation" from "net: Remove receive_raw()". Added patch "virtio-net: Always set populate_hash". Added patch "virtio-net: Do not clear VIRTIO_NET_F_HASH_REPORT". Added patch "ebpf: Use standard section name". Added patch "ebpf: Simplify error handling". Added patch "ebpf: Return 0 when configuration fails". Added patch "ebpf: Refactor tun_rss_steering_prog()". Added patch "ebpf: Add a separate target for skeleton". V2 -> V3: Added patch "tap: Remove tap_probe_vnet_hdr_len()". Added patch "tap: Remove qemu_using_vnet_hdr()". Added patch "net: Move virtio-net header length assertion". Added patch "net: Remove receive_raw()". Added patch "tap: Shrink zeroed virtio-net header". Dropped patch "tap: Fix virtio-net header buffer size". V1 -> V2: Added patch "ebpf: Fix RSS error handling". Signed-off-by: Akihiko Odaki <akihiko.od...@daynix.com> --- Changes in v9: - Added patch "virtio-net: Do not propagate ebpf-rss-fds errors". - Added patch "virtio-net: Shrink header byte swapping buffer". - Rebased. - Link to v8: https://lore.kernel.org/r/20231210-rss-v8-0-9553ee714...@daynix.com --- Akihiko Odaki (20): tap: Remove tap_probe_vnet_hdr_len() tap: Remove qemu_using_vnet_hdr() net: Move virtio-net header length assertion net: Remove receive_raw() tap: Call tap_receive_iov() from tap_receive() tap: Shrink zeroed virtio-net header virtio-net: Do not propagate ebpf-rss-fds errors virtio-net: Add only one queue pair when realizing virtio-net: Copy header only when necessary virtio-net: Shrink header byte swapping buffer virtio-net: Disable RSS on reset virtio-net: Unify the logic to update NIC state for RSS virtio-net: Return an error when vhost cannot enable RSS virtio-net: Report RSS warning at device realization virtio-net: Always set populate_hash virtio-net: Do not write hashes to peer buffer ebpf: Fix RSS error handling ebpf: Return 0 when configuration fails ebpf: Refactor tun_rss_steering_prog() ebpf: Add a separate target for skeleton ebpf/rss.bpf.skeleton.h | 1558 +++++++++++++++++++++++----------------------- include/net/net.h | 8 - net/tap_int.h | 1 - hw/net/e1000e.c | 1 - hw/net/igb.c | 1 - hw/net/net_tx_pkt.c | 4 +- hw/net/virtio-net.c | 344 +++++----- hw/net/vmxnet3.c | 2 - net/dump.c | 4 +- net/net.c | 47 +- net/netmap.c | 5 - net/tap-bsd.c | 5 - net/tap-linux.c | 20 - net/tap-solaris.c | 5 - net/tap-stub.c | 5 - net/tap.c | 77 +-- tools/ebpf/rss.bpf.c | 44 +- tools/ebpf/Makefile.ebpf | 15 +- 18 files changed, 988 insertions(+), 1158 deletions(-) --- base-commit: e5c6528dce86d7a9ada7ecf02fcb7b8560955131 change-id: 20231210-rss-e7c98e722253 Best regards, -- Akihiko Odaki <akihiko.od...@daynix.com>
