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| author |   Gary Leshner <Gary.S.Leshner@intel.com> | 2020-05-11 12:05:48 -0400 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2020-05-21 11:23:54 -0300 |
| commit | d99dc602e2a55a99940ba9506a7126dfa54d54ea (patch) | |
| tree | 977ed17d40aa1c83eb616f4269874cfa6fa1834e /include/rdma | |
| parent | IB/hfi1: Add accelerated IP capability bit (diff) | |
| download | wireguard-linux-d99dc602e2a55a99940ba9506a7126dfa54d54ea.tar.xz wireguard-linux-d99dc602e2a55a99940ba9506a7126dfa54d54ea.zip | |
IB/hfi1: Add functions to transmit datagram ipoib packets
This patch implements the mechanism to accelerate the transmit side of
a multiple transmit queue RDMA netdev by submitting the packets to
the SDMA engine directly instead of sending through the verbs layer.
This patch also changes the UD/SEND_ONLY op to output the entropy value
in byte 0 of deth[1]. UD/SEND_ONLY_WITH_IMMEDIATE uses the previous
behavior with no entropy value being output.
The code in the ipoib rdma netdev which submits tx requests upon
successful submission will call trace_sdma_output_ibhdr to output
the ibhdr to the trace buffer.
Link: https://lore.kernel.org/r/20200511160548.173205.45616.stgit@awfm-01.aw.intel.com
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Gary Leshner <Gary.S.Leshner@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 'include/rdma')
| -rw-r--r-- | include/rdma/ib_verbs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index db58f11552f1..029541a8faeb 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -2205,6 +2205,7 @@ struct rdma_netdev { void *clnt_priv; struct ib_device *hca; u8 port_num; + int mtu; /* * cleanup function must be specified. |