Adds capability to create a qpn to be recognized as an accelerated
UD QP for ipoib.

This is accomplished by reserving 0x81 in byte[0] of the qpn as the
prefix for these qp types and reserving qpns between 0x810000 and
0x81ffff.

The hfi1 capability mask already contained a flag for the VNIC netdev.
This has been renamed and extended to include both VNIC and ipoib.

The rvt code to allocate qps now recognizes this flag and sets 0x81
into byte[0] of the qpn.

The code to allocate qpns is modified to reset the qpn numbering when it
is detected that a value is located in byte[0] for a UD QP and it is a
qpn being requested for net dev use. If it is a regular UD QP then it is
allowable to have bits set in byte[0] of the qpn and provide the
previously normal behavior.

The code to free the qpn now checks for the AIP prefix value of 0x81 and
removes it from the qpn before being freed so that the lower 16 bit
number can be reused.

This patch requires minor changes in the IB core and ipoib to facilitate
the creation of accelerated UP QPs.

Link: https://lore.kernel.org/r/20200511160607.173205.11757.stgit@awfm-01.aw.intel.comReviewed-by: NDennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: NMike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: NGary Leshner <Gary.S.Leshner@intel.com>
Signed-off-by: NKaike Wan <kaike.wan@intel.com>
Signed-off-by: NDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

The module parameter for KDETH qpns is being removed in favor
of always using the default value of 0x80 as the qpn prefix.
Defines have been added for various KDETH values including
the prefix of 0x80.
The reserved range now starts at the base value for KDETH
qpns (0x80) and extends up to and including the last qpn for
other reserved QP prefixed types.
Adjust other QP prefixed define names to match KDETH defined
names.

Link: https://lore.kernel.org/r/20200511160600.173205.27508.stgit@awfm-01.aw.intel.comReviewed-by: NDennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: NMike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: NGary Leshner <Gary.S.Leshner@intel.com>
Signed-off-by: NKaike Wan <kaike.wan@intel.com>
Signed-off-by: NDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

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.comReviewed-by: NMike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: NDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: NGary Leshner <Gary.S.Leshner@intel.com>
Signed-off-by: NKaike Wan <kaike.wan@intel.com>
Signed-off-by: NDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

The accelerated IP capability bit is added to allow users to control
which feature is enabled and disabled.

Link: https://lore.kernel.org/r/20200511160541.173205.96870.stgit@awfm-01.aw.intel.comReviewed-by: NDennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: NMike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: NKaike Wan <kaike.wan@intel.com>
Signed-off-by: NDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

The uverbs layer largely duplicate the code in ib_create_srq(), with the
slight difference that it passes in a udata. Move all the code together
into ib_create_srq_user() and provide an inline for kernel users, similar
to other create calls.

Link: https://lore.kernel.org/r/20200506082444.14502-6-leon@kernel.orgSigned-off-by: NYishai Hadas <yishaih@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

When drop action is used the matching packet will stop processing in
steering and will be dropped. This functionality will allow users to drop
matching packets.

Link: https://lore.kernel.org/r/20200504054227.271486-1-leon@kernel.orgSigned-off-by: NDaria Velikovsky <daria@mellanox.com>
Reviewed-by: NMaor Gottlieb <maorg@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

User can configure default miss rule in order to skip matching in the user
domain and forward the packet to the kernel steering domain.  When user
requests a default miss rule, we add steering rule to forward the traffic
to the next namespace.

Link: https://lore.kernel.org/r/20200504053012.270689-5-leon@kernel.orgSigned-off-by: NMaor Gottlieb <maorg@mellanox.com>
Reviewed-by: NMark Zhang <markz@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

Currently, fs_core supports rule of forward the traffic
to continue matching in the next priority, now we add support
to forward the traffic matching in the next namespace.
Signed-off-by: NMaor Gottlieb <maorg@mellanox.com>
Reviewed-by: NMark Bloch <markb@mellanox.com>
Reviewed-by: NMark Zhang <markz@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>

The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:

struct foo {
        int stuff;
        struct boo array[];
};

By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.

Also, notice that, dynamic memory allocations won't be affected by
this change:

"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]

sizeof(flexible-array-member) triggers a warning because flexible array
members have incomplete type[1]. There are some instances of code in
which the sizeof operator is being incorrectly/erroneously applied to
zero-length arrays and the result is zero. Such instances may be hiding
some bugs. So, this work (flexible-array member conversions) will also
help to get completely rid of those sorts of issues.

This issue was found with the help of Coccinelle.

[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour")

Link: https://lore.kernel.org/r/20200507185342.GA14476@embeddedorSigned-off-by: NGustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

The librdmacm uses node_guid as identifier to correlate between IB devices
and CMA devices. However FW resets cause to such "connection" to be lost
and require from the user to restart its application.

Extend UCMA to return IB device index, which is stable identifier.

Link: https://lore.kernel.org/r/20200504132541.355710-1-leon@kernel.orgSigned-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:

struct foo {
        int stuff;
        struct boo array[];
};

By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.

Also, notice that, dynamic memory allocations won't be affected by
this change:

"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]

sizeof(flexible-array-member) triggers a warning because flexible array
members have incomplete type[1]. There are some instances of code in
which the sizeof operator is being incorrectly/erroneously applied to
zero-length arrays and the result is zero. Such instances may be hiding
some bugs. So, this work (flexible-array member conversions) will also
help to get completely rid of those sorts of issues.

This issue was found with the help of Coccinelle.

[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: NGustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>

Add two hash functions to distribute RoCE v2 UDP source and Flowlabel
symmetrically. These are user visible API and any change in the
implementation needs to be tested for inter-operability between old and
new variant.

Link: https://lore.kernel.org/r/20200504051935.269708-2-leon@kernel.orgSigned-off-by: NMark Zhang <markz@mellanox.com>
Reviewed-by: NMaor Gottlieb <maorg@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

When a client is added it isn't allowed to fail, but all the client's have
various failure paths within their add routines.

This creates the very fringe condition where the client was added, failed
during add and didn't set the client_data. The core code will then still
call other client_data centric ops like remove(), rename(), get_nl_info(),
and get_net_dev_by_params() with NULL client_data - which is confusing and
unexpected.

If the add() callback fails, then do not call any more client ops for the
device, even remove.

Remove all the now redundant checks for NULL client_data in ops callbacks.

Update all the add() callbacks to return error codes
appropriately. EOPNOTSUPP is used for cases where the ULP does not support
the ib_device - eg because it only works with IB.

Link: https://lore.kernel.org/r/20200421172440.387069-1-leon@kernel.orgSigned-off-by: NLeon Romanovsky <leonro@mellanox.com>
Acked-by: NUrsula Braun <ubraun@linux.ibm.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

Snoop interface is not used. Remove it.

Link: https://lore.kernel.org/r/20200413132408.931084-1-leon@kernel.orgSigned-off-by: NMaor Gottlieb <maorg@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

The patch sets the lag tx affinity of the data QPs and the GSI QPs
according to the LAG xmit slave.

For GSI QPs, in case the link layer is Ethenet (RoCE) we create two GSI
QPs, one for each physical port. When the driver selects the GSI QP, it
will consider the port affinity result.  For connected QPs, the driver
sets the affinity of the xmit slave.

The above, ensures that RC QP and it's corresponding GSI QP will transmit
from the same physical port.

Link: https://lore.kernel.org/r/20200430192146.12863-17-maorg@mellanox.comSigned-off-by: NMaor Gottlieb <maorg@mellanox.com>
Reviewed-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

Add a call to rdma_lag_get_ah_roce_slave() when the address handle is
created. Lower driver can use it to select the QP's affinity port.

Link: https://lore.kernel.org/r/20200430192146.12863-15-maorg@mellanox.comSigned-off-by: NMaor Gottlieb <maorg@mellanox.com>
Reviewed-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

Add support to get the RoCE LAG xmit slave by building skb of the RoCE
packet and call to master_get_xmit_slave.  If driver wants to get the
slave assume all slaves are available, then need to set
RDMA_LAG_FLAGS_HASH_ALL_SLAVES in flags.

Link: https://lore.kernel.org/r/20200430192146.12863-14-maorg@mellanox.comSigned-off-by: NMaor Gottlieb <maorg@mellanox.com>
Reviewed-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

Following patch adds additional argument to the create AH function, so it
make sense to group ah_attr and flags arguments in struct.

Link: https://lore.kernel.org/r/20200430192146.12863-13-maorg@mellanox.comSigned-off-by: NMaor Gottlieb <maorg@mellanox.com>
Acked-by: NDevesh Sharma <devesh.sharma@broadcom.com>
Acked-by: NGal Pressman <galpress@amazon.com>
Acked-by: NWeihang Li <liweihang@huawei.com>
Reviewed-by: NJason Gunthorpe <jgg@mellanox.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>

Add function to get the device physical port of the lag slave.
Signed-off-by: NMaor Gottlieb <maorg@mellanox.com>
Reviewed-by: NLeon Romanovsky <leonro@mellanox.com>
Acked-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>

Keep all slaves in array so it could be used to get the xmit slave
assume all the slaves are active.
The logic to add slave to the array is like the usable slaves, except
that we also add slaves that currently can't transmit - not up or active.
Signed-off-by: NMaor Gottlieb <maorg@mellanox.com>
Reviewed-by: NJiri Pirko <jiri@mellanox.com>
Reviewed-by: NJay Vosburgh <jay.vosburgh@canonical.com>
Acked-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>

Add two helper functions to get the xmit slave of bond in alb or tlb
mode. Extract the logic of find the xmit slave from the xmit flow
to function. Xmit flow will xmit through this slave and in the
following patches the new .ndo will call to the helper function
to return the xmit slave.
Signed-off-by: NMaor Gottlieb <maorg@mellanox.com>
Reviewed-by: NJiri Pirko <jiri@mellanox.com>
Reviewed-by: NJay Vosburgh <jay.vosburgh@canonical.com>
Acked-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>

Rename slave_arr to usable_slaves, since we will have two arrays,
one for the usable slaves and the other to all slaves.
Signed-off-by: NMaor Gottlieb <maorg@mellanox.com>
Reviewed-by: NJiri Pirko <jiri@mellanox.com>
Reviewed-by: NJay Vosburgh <jay.vosburgh@canonical.com>
Acked-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>

Add new ndo to get the xmit slave of master device. The reference
counters are not incremented so the caller must be careful with locks.
User can ask to get the xmit slave assume all the slaves can
transmit by set all_slaves arg to true.
Signed-off-by: NMaor Gottlieb <maorg@mellanox.com>
Reviewed-by: NJiri Pirko <jiri@mellanox.com>
Reviewed-by: NDavid Ahern <dsahern@gmail.com>
Acked-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>

Add new TX WQE field for Connect-X6DX trailer insertion support,
when set, the HW adds a trailer to the packet, the WQE trailer
association flags are used to set to HW the header which the
trailer belongs.
Signed-off-by: NRaed Salem <raeds@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>

Add a bit in HCA capabilities layout to indicate if release all pages is
supported.
Signed-off-by: NEran Ben Elisha <eranbe@mellanox.com>
Reviewed-by: NMoshe Shemesh <moshe@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>

Add TLS RX offload related IFC hardware fields and enumerations.
Signed-off-by: NTariq Toukan <tariqt@mellanox.com>
Reviewed-by: NMaxim Mikityanskiy <maximmi@mellanox.com>
Reviewed-by: NBoris Pismenny <borisp@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>

Add needed structure layouts and defines for pci sync for fw update
event. The downstream patches will include event handlers for this event
type.
Signed-off-by: NMoshe Shemesh <moshe@mellanox.com>
Reviewed-by: NTariq Toukan <tariqt@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>

Add needed structure layouts and defines for MFRL (Management Firmware
Reset Level) register. This structure will be used for the firmware
upgrade and reset flow in the downstream patches.
Signed-off-by: NMoshe Shemesh <moshe@mellanox.com>
Reviewed-by: NTariq Toukan <tariqt@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>

The imm_inval_pkey field can hold four different types of data,
depends on the usage, the data could be one of the below:
- Immediate field of the received message
- Invalidate rkey
- Pkey of the packet
- Flow table metadata

Current implementation doesn't reflect the intended usage of the
field at usage time.

Reflect the different types by replace this field with a union,
modify code where this field is used to reflect its intended
usage.
Signed-off-by: NRaed Salem <raeds@mellanox.com>
Reviewed-by: NHuy Nguyen <huyn@mellanox.com>
Reviewed-by: NTariq Toukan <tariqt@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>

The alignment value is part of the input structure, so use it and spare
extra memory allocation when is not needed.
Now, using the new ability when allocating icm for Direct-Rule
insertion.
Signed-off-by: NAriel Levkovich <lariel@mellanox.com>
Signed-off-by: NErez Shitrit <erezsh@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>

Add IPsec offload related IFC structs, layouts and enumerations.
Signed-off-by: NRaed Salem <raeds@mellanox.com>
Reviewed-by: NTariq Toukan <tariqt@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>

Add COPY type to modify_header action. IPsec feature is the first
feature that needs COPY steering action.
Signed-off-by: NHuy Nguyen <huyn@mellanox.com>
Signed-off-by: NRaed Salem <raeds@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
Acked-by: NLeon Romanovsky <leonro@mellanox.com>

Do mass update of transobj.c to reuse newly introduced
mlx5_cmd_exec_in*() interfaces.
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>

Do mass update of cq.c to reuse newly introduced
mlx5_cmd_exec_in*() interfaces.
Reviewed-by: NMoshe Shemesh <moshe@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>

Do mass update of vport.c to reuse newly introduced
mlx5_cmd_exec_in*() interfaces.
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>

When this is enabled, UDP source port for RoCEv2 packets are defined
by software instead of firmware.
Signed-off-by: NMark Zhang <markz@mellanox.com>
Reviewed-by: NMaor Gottlieb <maorg@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>

The mlx5_core doesn't need any functionality coded in qp.c, so move
that file to drivers/infiniband/ be under mlx5_ib responsibility.
Reviewed-by: NSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>

mlx5 core users are encouraged to use low level API (mlx5_cmd_exec)
without the need of helper functions, do this for q counters, remove
helper functions and call mlx5_cmd_exec directly from users.

This will help reduce the total amount of code and reduction of the
mlx5_core symbol table.
Reviewed-by: NSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>

Many mlx5_cmd_exec() callers are not interested in the output from that
command or have standard in/out structures. Those callers simply allocate
those structure on the stack and use sizeof() to provide in/out arguments.

In this naive approach provide simplified versions of mlx5_cmd_exec().
Reviewed-by: NSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>

The function is local to cma.c, so let's limit its scope.

Link: https://lore.kernel.org/r/20200413132323.930869-1-leon@kernel.orgReviewed-by: NMaor Gottlieb <maorg@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>