Hi: This series adds support to mlx4 for the netdev-genl API which makes it much easier for users and user programs to map NAPI IDs back to ifindexes, queues, and IRQs. This is extremely useful for a number of use cases, including epoll-based busy poll. In addition, this series includes a patch to generate per-queue statistics using the netlink API, as well. To facilitate the stats, patch 1/3 makes use of an existing field, "dropped" which was already being exported in the ethtool stats by the driver, but was never incremented. As of patch 1/3, it is now being incremented by the driver in an appropriate place and used in patch 3/3 as alloc_fail. Please note: I do not have access to mlx4 hardware, but I've been working closely with Martin Karsten from University of Waterloo (CC'd) who has very graciously tested my patches on their mlx4 hardware (hence his Tested-by attribution in each commit). His latest research work is particularly interesting [1] and this series helps to support that (and future) work. [1]: https://dl.acm.org/doi/pdf/10.1145/3626780 Thanks, Joe Joe Damato (3): net/mlx4: Track RX allocation failures in a stat net/mlx4: link NAPI instances to queues and IRQs net/mlx4: support per-queue statistics via netlink drivers/net/ethernet/mellanox/mlx4/en_cq.c | 14 +++ .../net/ethernet/mellanox/mlx4/en_netdev.c | 91 +++++++++++++++++++ drivers/net/ethernet/mellanox/mlx4/en_port.c | 4 +- drivers/net/ethernet/mellanox/mlx4/en_rx.c | 4 +- drivers/net/ethernet/mellanox/mlx4/mlx4_en.h | 1 + 5 files changed, 112 insertions(+), 2 deletions(-) -- 2.25.1
