Spdk/scripts/env_dpdk/check_dpdk_pci_api.sh
Tomasz Zawadzki 44290e13b4 env_dpdk: add script for comparing DPDK PCI API
Starting with DPDK 22.11, PCI API are no longer public.
In order to implement out-of-tree driver like
SPDK NVMe driver that is compatible with DPDK,
a copy of PCI API headers are required in SPDK.

check_dpdk_pci_api.sh script is intended simplify
the maintanance of the compatibility between
SPDK copies of the headers and multiple DPDK versions.

Please see the included README

Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Change-Id: Ief028c13564441560425761e7802c6cf07460876
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/15857
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
2022-12-16 09:27:11 +00:00

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#!/usr/bin/env bash
# SPDX-License-Identifier: BSD-3-Clause
# Copyright (C) 2022 Intel Corporation
# All rights reserved.
#
scriptdir=$(readlink -f "$(dirname "$0")")
rootdir=$(readlink -f "$scriptdir/../..")
source "$rootdir/scripts/common.sh"
set -e
shopt -s extglob
mode=${1:-check} # check or fix
# By default verify headers matching the DPDK submodule
dpdk_dir=${2:-"$rootdir/dpdk"}
dpdk_ver=$(< "$dpdk_dir/VERSION")
env_path="$rootdir/lib/env_dpdk"
tracked_versions=("$env_path/"+([0-9]).+([0-9])/*.h)
tracked_versions=("${tracked_versions[@]#"$env_path/"}")
tracked_versions=("${tracked_versions[@]%/*}")
# The DPDK PCI API tracking started with DPDK 22.11, all prior versions will use DPDK 22.07 headers
target_ver="22.07"
while read -r ver; do
ge "$dpdk_ver" "$ver" && target_ver=$ver && break
done < <(printf "%s\n" "${tracked_versions[@]}" | sort -Vru)
echo "Checking DPDK PCI API from $dpdk_ver against $target_ver ..."
target_headers=("$env_path/$target_ver/"*.h)
target_headers=("${target_headers[@]##*/}")
# The includes should point to headers in SPDK tree rather than system ones.
use_local_includes="-e "
for header in "${target_headers[@]}"; do
use_local_includes+="s/#include <$header>/#include \"$header\"/g;"
done
for header in "${target_headers[@]}"; do
dpdk_file="$dpdk_dir/$(git -C "$dpdk_dir" ls-files "*/$header")"
# Patch DPDK header with any workarounds necessary
patch_file="$scriptdir/$target_ver/$header.patch"
if [[ -s $patch_file ]]; then
dpdk_header=$(patch -s "$dpdk_file" "$patch_file" -o - | sed "$use_local_includes")
else
dpdk_header=$(sed "$use_local_includes" "$dpdk_file")
fi
spdk_file="$env_path/$target_ver/$header"
if ! single_diff=$(diff -u "$spdk_file" <(echo "$dpdk_header")); then
header_diff+="$single_diff\n"
fi
done
if [[ -z "$header_diff" ]]; then
echo "No differences in headers found."
exit 0
fi
if [[ "$mode" == "check" ]]; then
cat <<- CHECK
$(echo -e "$header_diff")
Differences in DPDK and internal SPDK headers found.
For changes that do not affect the API, please use 'fix' as \$1 to this script.
If API was changed, please create "$env_path/$dpdk_ver/" with appropriate headers.
CHECK
elif [[ "$mode" == "fix" ]]; then
echo -e "$header_diff" | patch -d "$env_path/$target_ver/"
echo "Fixed differences between DPDK and internal SPDK headers."
else
echo "Incorrect \$1 passed, please use 'check' or 'fix'."
exit 1
fi