selftests: mlxsw: Introduce devlink line card provision/unprovision/activation tests

Introduce basic line card manipulation which consists of provisioning,
unprovisioning and activation of a line card.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/tools/testing/selftests/drivers/net/mlxsw/devlink_linecard.sh b/tools/testing/selftests/drivers/net/mlxsw/devlink_linecard.sh
new file mode 100755 (executable)
index 0000000..08a922d
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/mlxsw/devlink_linecard.sh
@@ -0,0 +1,280 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# In addition to the common variables, user might use:
+# LC_SLOT - If not set, all probed line cards are going to be tested,
+#          with an exception of the "activation_16x100G_test".
+#          It set, only the selected line card is going to be used
+#          for tests, including "activation_16x100G_test".
+
+lib_dir=$(dirname $0)/../../../net/forwarding
+
+ALL_TESTS="
+       unprovision_test
+       provision_test
+       activation_16x100G_test
+"
+
+NUM_NETIFS=0
+
+source $lib_dir/lib.sh
+source $lib_dir/devlink_lib.sh
+
+until_lc_state_is()
+{
+       local state=$1; shift
+       local current=$("$@")
+
+       echo "$current"
+       [ "$current" == "$state" ]
+}
+
+until_lc_state_is_not()
+{
+       ! until_lc_state_is "$@"
+}
+
+lc_state_get()
+{
+       local lc=$1
+
+       devlink lc show $DEVLINK_DEV lc $lc -j | jq -e -r ".[][][].state"
+}
+
+lc_wait_until_state_changes()
+{
+       local lc=$1
+       local state=$2
+       local timeout=$3 # ms
+
+       busywait "$timeout" until_lc_state_is_not "$state" lc_state_get "$lc"
+}
+
+lc_wait_until_state_becomes()
+{
+       local lc=$1
+       local state=$2
+       local timeout=$3 # ms
+
+       busywait "$timeout" until_lc_state_is "$state" lc_state_get "$lc"
+}
+
+until_lc_port_count_is()
+{
+       local port_count=$1; shift
+       local current=$("$@")
+
+       echo "$current"
+       [ $current == $port_count ]
+}
+
+lc_port_count_get()
+{
+       local lc=$1
+
+       devlink port -j | jq -e -r ".[][] | select(.lc==$lc) | .port" | wc -l
+}
+
+lc_wait_until_port_count_is()
+{
+       local lc=$1
+       local port_count=$2
+       local timeout=$3 # ms
+
+       busywait "$timeout" until_lc_port_count_is "$port_count" lc_port_count_get "$lc"
+}
+
+PROV_UNPROV_TIMEOUT=8000 # ms
+POST_PROV_ACT_TIMEOUT=2000 # ms
+PROV_PORTS_INSTANTIATION_TIMEOUT=15000 # ms
+
+unprovision_one()
+{
+       local lc=$1
+       local state
+
+       state=$(lc_state_get $lc)
+       check_err $? "Failed to get state of linecard $lc"
+       if [[ "$state" == "unprovisioned" ]]; then
+               return
+       fi
+
+       log_info "Unprovisioning linecard $lc"
+
+       devlink lc set $DEVLINK_DEV lc $lc notype
+       check_err $? "Failed to trigger linecard $lc unprovisioning"
+
+       state=$(lc_wait_until_state_changes $lc "unprovisioning" \
+               $PROV_UNPROV_TIMEOUT)
+       check_err $? "Failed to unprovision linecard $lc (timeout)"
+
+       [ "$state" == "unprovisioned" ]
+       check_err $? "Failed to unprovision linecard $lc (state=$state)"
+}
+
+provision_one()
+{
+       local lc=$1
+       local type=$2
+       local state
+
+       log_info "Provisioning linecard $lc"
+
+       devlink lc set $DEVLINK_DEV lc $lc type $type
+       check_err $? "Failed trigger linecard $lc provisioning"
+
+       state=$(lc_wait_until_state_changes $lc "provisioning" \
+               $PROV_UNPROV_TIMEOUT)
+       check_err $? "Failed to provision linecard $lc (timeout)"
+
+       [ "$state" == "provisioned" ] || [ "$state" == "active" ]
+       check_err $? "Failed to provision linecard $lc (state=$state)"
+
+       provisioned_type=$(devlink lc show $DEVLINK_DEV lc $lc -j | jq -e -r ".[][][].type")
+       [ "$provisioned_type" == "$type" ]
+       check_err $? "Wrong provision type returned for linecard $lc (got \"$provisioned_type\", expected \"$type\")"
+
+       # Wait for possible activation to make sure the state
+       # won't change after return from this function.
+       state=$(lc_wait_until_state_becomes $lc "active" \
+               $POST_PROV_ACT_TIMEOUT)
+}
+
+unprovision_test()
+{
+       RET=0
+       local lc
+
+       lc=$LC_SLOT
+       unprovision_one $lc
+       log_test "Unprovision"
+}
+
+LC_16X100G_TYPE="16x100G"
+LC_16X100G_PORT_COUNT=16
+
+supported_types_check()
+{
+       local lc=$1
+       local supported_types_count
+       local type_index
+       local lc_16x100_found=false
+
+       supported_types_count=$(devlink lc show $DEVLINK_DEV lc $lc -j | \
+                               jq -e -r ".[][][].supported_types | length")
+       [ $supported_types_count != 0 ]
+       check_err $? "No supported types found for linecard $lc"
+       for (( type_index=0; type_index<$supported_types_count; type_index++ ))
+       do
+               type=$(devlink lc show $DEVLINK_DEV lc $lc -j | \
+                      jq -e -r ".[][][].supported_types[$type_index]")
+               if [[ "$type" == "$LC_16X100G_TYPE" ]]; then
+                       lc_16x100_found=true
+                       break
+               fi
+       done
+       [ $lc_16x100_found = true ]
+       check_err $? "16X100G not found between supported types of linecard $lc"
+}
+
+ports_check()
+{
+       local lc=$1
+       local expected_port_count=$2
+       local port_count
+
+       port_count=$(lc_wait_until_port_count_is $lc $expected_port_count \
+               $PROV_PORTS_INSTANTIATION_TIMEOUT)
+       [ $port_count != 0 ]
+       check_err $? "No port associated with linecard $lc"
+       [ $port_count == $expected_port_count ]
+       check_err $? "Unexpected port count linecard $lc (got $port_count, expected $expected_port_count)"
+}
+
+provision_test()
+{
+       RET=0
+       local lc
+       local type
+       local state
+
+       lc=$LC_SLOT
+       supported_types_check $lc
+       state=$(lc_state_get $lc)
+       check_err $? "Failed to get state of linecard $lc"
+       if [[ "$state" != "unprovisioned" ]]; then
+               unprovision_one $lc
+       fi
+       provision_one $lc $LC_16X100G_TYPE
+       ports_check $lc $LC_16X100G_PORT_COUNT
+       log_test "Provision"
+}
+
+ACTIVATION_TIMEOUT=20000 # ms
+
+interface_check()
+{
+       ip link set $h1 up
+       ip link set $h2 up
+       ifaces_upped=true
+       setup_wait
+}
+
+activation_16x100G_test()
+{
+       RET=0
+       local lc
+       local type
+       local state
+
+       lc=$LC_SLOT
+       type=$LC_16X100G_TYPE
+
+       unprovision_one $lc
+       provision_one $lc $type
+       state=$(lc_wait_until_state_becomes $lc "active" \
+               $ACTIVATION_TIMEOUT)
+       check_err $? "Failed to get linecard $lc activated (timeout)"
+
+       interface_check
+
+       log_test "Activation 16x100G"
+}
+
+setup_prepare()
+{
+       local lc_num=$(devlink lc show -j | jq -e -r ".[][\"$DEVLINK_DEV\"] |length")
+       if [[ $? -ne 0 ]] || [[ $lc_num -eq 0 ]]; then
+               echo "SKIP: No linecard support found"
+               exit $ksft_skip
+       fi
+
+       if [ -z "$LC_SLOT" ]; then
+               echo "SKIP: \"LC_SLOT\" variable not provided"
+               exit $ksft_skip
+       fi
+
+       # Interfaces are not present during the script start,
+       # that's why we define NUM_NETIFS here so dummy
+       # implicit veth pairs are not created.
+       NUM_NETIFS=2
+       h1=${NETIFS[p1]}
+       h2=${NETIFS[p2]}
+       ifaces_upped=false
+}
+
+cleanup()
+{
+       if [ "$ifaces_upped" = true ] ; then
+               ip link set $h1 down
+               ip link set $h2 down
+       fi
+}
+
+trap cleanup EXIT
+
+setup_prepare
+
+tests_run
+
+exit $EXIT_STATUS