On Mon, Sep 14, 2020 at 02:18:57PM +0300, Leon Romanovsky wrote: > From: Leon Romanovsky <leonro@xxxxxxxxxx> > > Special QPs created by mlx4 have same QP port borrowed from > the context, while they are expected to have different ones. > > Fix it by using HW physical port instead. > > It fixes the following error during driver init: > [ 12.074150] mlx4_core 0000:05:00.0: mlx4_ib: initializing demux service for 128 qp1 clients > [ 12.084036] <mlx4_ib> create_pv_sqp: Couldn't create special QP (-16) > [ 12.085123] <mlx4_ib> create_pv_resources: Couldn't create QP1 (-16) > [ 12.088300] mlx4_en: Mellanox ConnectX HCA Ethernet driver v4.0-0 > > Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxx> > --- > Changelog: > v3: mlx4 devices create 2 special QPs in SRIOV mode, separate them by > port number and special bit. The mlx4 is limited to two ports and not > going to be extended, and the port_num is not forwarded to FW too, so > it is safe. > v2: https://lore.kernel.org/linux-rdma/20200907122156.478360-4-leon@xxxxxxxxxx/#r > --- > drivers/infiniband/hw/mlx4/mad.c | 9 +++++---- > 1 file changed, 5 insertions(+), 4 deletions(-) I didn't understand why this was in the restrack series, and the commit doesn't say when the error can be hit No fixes line? Jason
