diff options
| author | Kaike Wan <kaike.wan@intel.com> | 2020-05-11 19:06:18 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2020-05-21 17:23:55 +0300 |
| commit | 6d72344cf6c47010cc2055a832e16c7fcdd16f82 (patch) | |
| tree | d8eaf896a5ca9df7d49473d51cfa4e85c88af94f /drivers/infiniband/hw/hfi1/verbs.c | |
| parent | 19d8b90a509f7fd9a3224cca6df160a413a4d521 (diff) | |
| download | linux-6d72344cf6c47010cc2055a832e16c7fcdd16f82.tar.xz | |
IB/ipoib: Increase ipoib Datagram mode MTU's upper limit
Currently the ipoib UD mtu is restricted to 4K bytes. Remove this
limitation so that the IPOIB module can potentially use an MTU (in UD
mode) that is bounded by the MTU of the underlying device. A field is
added to the ib_port_attr structure to indicate the maximum physical
MTU the underlying device supports.
Link: https://lore.kernel.org/r/20200511160618.173205.23053.stgit@awfm-01.aw.intel.com
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Sadanand Warrier <sadanand.warrier@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/hw/hfi1/verbs.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/verbs.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/verbs.c b/drivers/infiniband/hw/hfi1/verbs.c index c61b2916d420..19d5d0061b01 100644 --- a/drivers/infiniband/hw/hfi1/verbs.c +++ b/drivers/infiniband/hw/hfi1/verbs.c @@ -1439,6 +1439,8 @@ static int query_port(struct rvt_dev_info *rdi, u8 port_num, 4096 : hfi1_max_mtu), IB_MTU_4096); props->active_mtu = !valid_ib_mtu(ppd->ibmtu) ? props->max_mtu : mtu_to_enum(ppd->ibmtu, IB_MTU_4096); + props->phys_mtu = HFI1_CAP_IS_KSET(AIP) ? hfi1_max_mtu : + ib_mtu_enum_to_int(props->max_mtu); return 0; } |