By doing the registration immediately upon mapping the BAR instead of
when the memory is inserted into the spdk_mem_map, we're able to
register BARs that are not 2MB multiples in size and alignment. The SPDK
API for registering a BAR already returns the physical/io address in the
map call, and it can be used directly without a call to
spdk_mem_register().
If the user does elect to later register the BAR using
spdk_mem_register(), we attempt to insert the 2MB aligned segments we
can into the spdk_mem_map. Users may still need to register memory for a
few reasons, such as making spdk_vtophys() work, or for setting up the
BAR as a target for RDMA. These cases still require 2MB aligned and
sized segments.
Change-Id: I395ae8803ec4bf22703f6f76db54200949e82532
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/14017
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
This checks the current version to make sure we have
a dpdk_fn_table that supports it.
This is easy for now, since the DPDK PCI API is
public. Moving forward, DPDK 22.11 will likely make
these APIs private, requiring us to carry header file
copies for different DPDK versions so that we can
not only build against DPDK but also use the correct
data strucures and APIs to interact with those private
DPDK interfaces. We will also need to consider
minor (i.e. stable or point) releases since they
could technically change PCI ABI as well - the current
year + month checks won't be sufficient.
Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: Ic9f41d9d13778f3d078b20b08da48d8d16362b11
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/14637
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
This is the next step in supporting multiple DPDK
PCI device/driver ABIs once those APIs are no longer
public and subject to ABI versioning rules.
This patch does the following:
1) introduce dpdk_fn_table
2) rename the existing dpdk_xx functions to xx_2207,
to denote these functions are valid for DPDK versions
up to and including 22.07
3) create a dpdk_fn_table pointing to the xx_2207
functions
4) create a global dpdk_fn_table pointer that points
directly to the 2207 fn_table
5) create new dpdk_xx functions that just redirect
to the associated dpdk_fn_table function pointer
Future patches will add the machinery to register
multiple function tables and pick the one to use at
run time based on rte_version() calls.
Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I1171fbdb4f72ff117416ac1fb282ff6f9fa5cadf
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/14634
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
