Hi Dave, This series is a combination of netdev and RDMA, so in order to avoid conflicts, we would like to ask you to route this series through mlx5-next shared branch. It is based on v5.7-rc2 tag. --------------------------------------------------------------------- The following series adds support to get the LAG master xmit slave by introducing new .ndo - ndo_get_xmit_slave. Every LAG module can implement it and it first implemented in the bond driver. This is follow-up to the RFC discussion [1]. The main motivation for doing this is for drivers that offload part of the LAG functionality. For example, Mellanox Connect-X hardware implements RoCE LAG which selects the TX affinity when the resources are created and port is remapped when it goes down. The first part of this patchset introduces the new .ndo and add the support to the bonding module. The second part adds support to get the RoCE LAG xmit slave by building skb of the RoCE packet based on the AH attributes and call to the new .ndo. The third part change the mlx5 driver driver to set the QP's affinity port according to the slave which found by the .ndo. Thanks [1] https://lore.kernel.org/netdev/20200126132126.9981-1-maorg@xxxxxxxxxxxx/ Change log: v7: Change only in RDMA part: - return slave and as output - Don't hold lock while allocating skb. In addition, reorder patches, so mlx5 patches are before RDMA. v6: patch 1 - Fix commit message and add function description. patch 10 - Keep udata as function argument. v5: patch 1 - Remove rcu lock. patch 10 - Refactor patch that group the AH attributes in struct. patch 11 - call the ndo while holding the rcu and initialize xmit_slave. patch 12 - Store the xmit slave in rdma_ah_init_attr and qp_attr. v4: 1. Rename master_get_xmit_slave to netdev_get_xmit_slave and move the implementation to dev.c 2. Remove unnecessary check of NULL pointer. 3. Fix typo. v3: 1. Move master_get_xmit_slave to netdevice.h and change the flags arg. to bool. 2. Split helper functions commit to multiple commits for each bond mode. 3. Extract refcotring changes to seperate commits. v2: The first patch wasn't sent in v1. v1: https://lore.kernel.org/netdev/ac373456-b838-29cf-645f-b1ea1a93e3b0@xxxxxxxxx/T/#t Maor Gottlieb (16): net/core: Introduce netdev_get_xmit_slave bonding: Export skip slave logic to function bonding: Rename slave_arr to usable_slaves bonding/alb: Add helper functions to get the xmit slave bonding: Add helper function to get the xmit slave based on hash bonding: Add helper function to get the xmit slave in rr mode bonding: Add function to get the xmit slave in active-backup mode bonding: Add array of all slaves bonding: Implement ndo_get_xmit_slave net/mlx5: Change lag mutex lock to spin lock net/mlx5: Add support to get lag physical port RDMA: Group create AH arguments in struct RDMA/core: Add LAG functionality RDMA/core: Get xmit slave for LAG RDMA/mlx5: Refactor affinity related code RDMA/mlx5: Set lag tx affinity according to slave drivers/infiniband/core/Makefile | 2 +- drivers/infiniband/core/lag.c | 136 +++++++++ drivers/infiniband/core/verbs.c | 66 +++-- drivers/infiniband/hw/bnxt_re/ib_verbs.c | 8 +- drivers/infiniband/hw/bnxt_re/ib_verbs.h | 2 +- drivers/infiniband/hw/efa/efa.h | 3 +- drivers/infiniband/hw/efa/efa_verbs.c | 6 +- drivers/infiniband/hw/hns/hns_roce_ah.c | 5 +- drivers/infiniband/hw/hns/hns_roce_device.h | 4 +- drivers/infiniband/hw/mlx4/ah.c | 11 +- drivers/infiniband/hw/mlx4/mlx4_ib.h | 2 +- drivers/infiniband/hw/mlx5/ah.c | 14 +- drivers/infiniband/hw/mlx5/gsi.c | 33 ++- drivers/infiniband/hw/mlx5/main.c | 2 + drivers/infiniband/hw/mlx5/mlx5_ib.h | 3 +- drivers/infiniband/hw/mlx5/qp.c | 122 +++++--- drivers/infiniband/hw/mthca/mthca_provider.c | 9 +- drivers/infiniband/hw/ocrdma/ocrdma_ah.c | 3 +- drivers/infiniband/hw/ocrdma/ocrdma_ah.h | 2 +- drivers/infiniband/hw/qedr/verbs.c | 4 +- drivers/infiniband/hw/qedr/verbs.h | 2 +- .../infiniband/hw/vmw_pvrdma/pvrdma_verbs.c | 5 +- .../infiniband/hw/vmw_pvrdma/pvrdma_verbs.h | 2 +- drivers/infiniband/sw/rdmavt/ah.c | 11 +- drivers/infiniband/sw/rdmavt/ah.h | 4 +- drivers/infiniband/sw/rxe/rxe_verbs.c | 9 +- drivers/net/bonding/bond_alb.c | 39 ++- drivers/net/bonding/bond_main.c | 268 +++++++++++++----- drivers/net/ethernet/mellanox/mlx5/core/lag.c | 66 +++-- include/linux/mlx5/driver.h | 2 + include/linux/mlx5/mlx5_ifc.h | 4 +- include/linux/mlx5/qp.h | 2 + include/linux/netdevice.h | 12 + include/net/bond_alb.h | 4 + include/net/bonding.h | 3 +- include/rdma/ib_verbs.h | 12 +- include/rdma/lag.h | 23 ++ net/core/dev.c | 22 ++ 38 files changed, 696 insertions(+), 231 deletions(-) create mode 100644 drivers/infiniband/core/lag.c create mode 100644 include/rdma/lag.h -- 2.17.2
