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selftests: mlxsw: Use busywait helper in vxlan test 

Vxlan test uses offload indication checks.

Use a busywait helper and wait until the offload indication is set or
fail if it reaches timeout.

Signed-off-by: Danielle Ratson <danieller@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Danielle Ratson 2020-02-27 08:50:12 +01:00 committed by David S. Miller
parent 0c22f993c9
commit 05ef614c55
2 changed files with 139 additions and 89 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

206
tools/testing/selftests/drivers/net/mlxsw/vxlan.sh
View File

@ -9,6 +9,7 @@ lib_dir=$(dirname $0)/../../../net/forwarding
ALL_TESTS="sanitization_test offload_indication_test \ ALL_TESTS="sanitization_test offload_indication_test \
sanitization_vlan_aware_test offload_indication_vlan_aware_test" sanitization_vlan_aware_test offload_indication_vlan_aware_test"
NUM_NETIFS=2 NUM_NETIFS=2
: ${TIMEOUT:=20000} # ms
source $lib_dir/lib.sh source $lib_dir/lib.sh
setup_prepare() setup_prepare()
@ -470,8 +471,8 @@ offload_indication_fdb_flood_test()
bridge fdb append 00:00:00:00:00:00 dev vxlan0 self dst 198.51.100.2 bridge fdb append 00:00:00:00:00:00 dev vxlan0 self dst 198.51.100.2
bridge fdb show brport vxlan0 | grep 00:00:00:00:00:00 \ busywait "$TIMEOUT" wait_for_offload grep_bridge_fdb 00:00:00:00:00:00 \
| grep -q offload bridge fdb show brport vxlan0
check_err $? check_err $?
bridge fdb del 00:00:00:00:00:00 dev vxlan0 self bridge fdb del 00:00:00:00:00:00 dev vxlan0 self
@ -486,11 +487,11 @@ offload_indication_fdb_bridge_test()
bridge fdb add de:ad:be:ef:13:37 dev vxlan0 self master static \ bridge fdb add de:ad:be:ef:13:37 dev vxlan0 self master static \
dst 198.51.100.2 dst 198.51.100.2
bridge fdb show brport vxlan0 | grep de:ad:be:ef:13:37 | grep self \ busywait "$TIMEOUT" wait_for_offload grep_bridge_fdb \
| grep -q offload de:ad:be:ef:13:37 self bridge fdb show brport vxlan0
check_err $? check_err $?
bridge fdb show brport vxlan0 | grep de:ad:be:ef:13:37 | grep -v self \ busywait "$TIMEOUT" wait_for_offload grep_bridge_fdb \
| grep -q offload de:ad:be:ef:13:37 self -v bridge fdb show brport vxlan0
check_err $? check_err $?
log_test "vxlan entry offload indication - initial state" log_test "vxlan entry offload indication - initial state"
@ -500,9 +501,9 @@ offload_indication_fdb_bridge_test()
RET=0 RET=0
bridge fdb del de:ad:be:ef:13:37 dev vxlan0 master bridge fdb del de:ad:be:ef:13:37 dev vxlan0 master
bridge fdb show brport vxlan0 | grep de:ad:be:ef:13:37 | grep self \ busywait "$TIMEOUT" not wait_for_offload grep_bridge_fdb \
| grep -q offload de:ad:be:ef:13:37 self bridge fdb show brport vxlan0
check_fail $? check_err $?
log_test "vxlan entry offload indication - after removal from bridge" log_test "vxlan entry offload indication - after removal from bridge"
@ -511,11 +512,11 @@ offload_indication_fdb_bridge_test()
RET=0 RET=0
bridge fdb add de:ad:be:ef:13:37 dev vxlan0 master static bridge fdb add de:ad:be:ef:13:37 dev vxlan0 master static
bridge fdb show brport vxlan0 | grep de:ad:be:ef:13:37 | grep self \ busywait "$TIMEOUT" wait_for_offload grep_bridge_fdb \
| grep -q offload de:ad:be:ef:13:37 self bridge fdb show brport vxlan0
check_err $? check_err $?
bridge fdb show brport vxlan0 | grep de:ad:be:ef:13:37 | grep -v self \ busywait "$TIMEOUT" wait_for_offload grep_bridge_fdb \
| grep -q offload de:ad:be:ef:13:37 self -v bridge fdb show brport vxlan0
check_err $? check_err $?
log_test "vxlan entry offload indication - after re-add to bridge" log_test "vxlan entry offload indication - after re-add to bridge"
@ -525,9 +526,9 @@ offload_indication_fdb_bridge_test()
RET=0 RET=0
bridge fdb del de:ad:be:ef:13:37 dev vxlan0 self bridge fdb del de:ad:be:ef:13:37 dev vxlan0 self
bridge fdb show brport vxlan0 | grep de:ad:be:ef:13:37 | grep -v self \ busywait "$TIMEOUT" not wait_for_offload grep_bridge_fdb \
| grep -q offload de:ad:be:ef:13:37 self -v bridge fdb show brport vxlan0
check_fail $? check_err $?
log_test "vxlan entry offload indication - after removal from vxlan" log_test "vxlan entry offload indication - after removal from vxlan"
@ -536,11 +537,11 @@ offload_indication_fdb_bridge_test()
RET=0 RET=0
bridge fdb add de:ad:be:ef:13:37 dev vxlan0 self dst 198.51.100.2 bridge fdb add de:ad:be:ef:13:37 dev vxlan0 self dst 198.51.100.2
bridge fdb show brport vxlan0 | grep de:ad:be:ef:13:37 | grep self \ busywait "$TIMEOUT" wait_for_offload grep_bridge_fdb \
| grep -q offload de:ad:be:ef:13:37 self bridge fdb show brport vxlan0
check_err $? check_err $?
bridge fdb show brport vxlan0 | grep de:ad:be:ef:13:37 | grep -v self \ busywait "$TIMEOUT" wait_for_offload grep_bridge_fdb \
| grep -q offload de:ad:be:ef:13:37 self -v bridge fdb show brport vxlan0
check_err $? check_err $?
log_test "vxlan entry offload indication - after re-add to vxlan" log_test "vxlan entry offload indication - after re-add to vxlan"
@ -558,27 +559,32 @@ offload_indication_decap_route_test()
{ {
RET=0 RET=0
ip route show table local | grep 198.51.100.1 | grep -q offload busywait "$TIMEOUT" wait_for_offload \
ip route show table local 198.51.100.1
check_err $? check_err $?
ip link set dev vxlan0 down ip link set dev vxlan0 down
ip route show table local | grep 198.51.100.1 | grep -q offload busywait "$TIMEOUT" wait_for_offload \
ip route show table local 198.51.100.1
check_err $? check_err $?
ip link set dev vxlan1 down ip link set dev vxlan1 down
ip route show table local | grep 198.51.100.1 | grep -q offload busywait "$TIMEOUT" not wait_for_offload \
check_fail $? ip route show table local 198.51.100.1
check_err $?
log_test "vxlan decap route - vxlan device down" log_test "vxlan decap route - vxlan device down"
RET=0 RET=0
ip link set dev vxlan1 up ip link set dev vxlan1 up
ip route show table local | grep 198.51.100.1 | grep -q offload busywait "$TIMEOUT" wait_for_offload \
ip route show table local 198.51.100.1
check_err $? check_err $?
ip link set dev vxlan0 up ip link set dev vxlan0 up
ip route show table local | grep 198.51.100.1 | grep -q offload busywait "$TIMEOUT" wait_for_offload \
ip route show table local 198.51.100.1
check_err $? check_err $?
log_test "vxlan decap route - vxlan device up" log_test "vxlan decap route - vxlan device up"
@ -586,11 +592,13 @@ offload_indication_decap_route_test()
RET=0 RET=0
ip address delete 198.51.100.1/32 dev lo ip address delete 198.51.100.1/32 dev lo
ip route show table local | grep 198.51.100.1 | grep -q offload busywait "$TIMEOUT" not wait_for_offload \
check_fail $? ip route show table local 198.51.100.1
check_err $?
ip address add 198.51.100.1/32 dev lo ip address add 198.51.100.1/32 dev lo
ip route show table local | grep 198.51.100.1 | grep -q offload busywait "$TIMEOUT" wait_for_offload \
ip route show table local 198.51.100.1
check_err $? check_err $?
log_test "vxlan decap route - add local route" log_test "vxlan decap route - add local route"
@ -598,16 +606,19 @@ offload_indication_decap_route_test()
RET=0 RET=0
ip link set dev $swp1 nomaster ip link set dev $swp1 nomaster
ip route show table local | grep 198.51.100.1 | grep -q offload busywait "$TIMEOUT" wait_for_offload \
ip route show table local 198.51.100.1
check_err $? check_err $?
ip link set dev $swp2 nomaster ip link set dev $swp2 nomaster
ip route show table local | grep 198.51.100.1 | grep -q offload busywait "$TIMEOUT" not wait_for_offload \
check_fail $? ip route show table local 198.51.100.1
check_err $?
ip link set dev $swp1 master br0 ip link set dev $swp1 master br0
ip link set dev $swp2 master br1 ip link set dev $swp2 master br1
ip route show table local | grep 198.51.100.1 | grep -q offload busywait "$TIMEOUT" wait_for_offload \
ip route show table local 198.51.100.1
check_err $? check_err $?
log_test "vxlan decap route - local ports enslavement" log_test "vxlan decap route - local ports enslavement"
@ -615,12 +626,14 @@ offload_indication_decap_route_test()
RET=0 RET=0
ip link del dev br0 ip link del dev br0
ip route show table local | grep 198.51.100.1 | grep -q offload busywait "$TIMEOUT" wait_for_offload \
ip route show table local 198.51.100.1
check_err $? check_err $?
ip link del dev br1 ip link del dev br1
ip route show table local | grep 198.51.100.1 | grep -q offload busywait "$TIMEOUT" not wait_for_offload \
check_fail $? ip route show table local 198.51.100.1
check_err $?
log_test "vxlan decap route - bridge device deletion" log_test "vxlan decap route - bridge device deletion"
@ -632,16 +645,19 @@ offload_indication_decap_route_test()
ip link set dev $swp2 master br1 ip link set dev $swp2 master br1
ip link set dev vxlan0 master br0 ip link set dev vxlan0 master br0
ip link set dev vxlan1 master br1 ip link set dev vxlan1 master br1
ip route show table local | grep 198.51.100.1 | grep -q offload busywait "$TIMEOUT" wait_for_offload \
ip route show table local 198.51.100.1
check_err $? check_err $?
ip link del dev vxlan0 ip link del dev vxlan0
ip route show table local | grep 198.51.100.1 | grep -q offload busywait "$TIMEOUT" wait_for_offload \
ip route show table local 198.51.100.1
check_err $? check_err $?
ip link del dev vxlan1 ip link del dev vxlan1
ip route show table local | grep 198.51.100.1 | grep -q offload busywait "$TIMEOUT" not wait_for_offload \
check_fail $? ip route show table local 198.51.100.1
check_err $?
log_test "vxlan decap route - vxlan device deletion" log_test "vxlan decap route - vxlan device deletion"
@ -656,12 +672,15 @@ check_fdb_offloaded()
local mac=00:11:22:33:44:55 local mac=00:11:22:33:44:55
local zmac=00:00:00:00:00:00 local zmac=00:00:00:00:00:00
bridge fdb show dev vxlan0 | grep $mac | grep self | grep -q offload busywait "$TIMEOUT" wait_for_offload grep_bridge_fdb $mac self \
bridge fdb show dev vxlan0
check_err $? check_err $?
bridge fdb show dev vxlan0 | grep $mac | grep master | grep -q offload busywait "$TIMEOUT" wait_for_offload grep_bridge_fdb $mac master \
bridge fdb show dev vxlan0
check_err $? check_err $?
bridge fdb show dev vxlan0 | grep $zmac | grep self | grep -q offload busywait "$TIMEOUT" wait_for_offload grep_bridge_fdb $zmac self \
bridge fdb show dev vxlan0
check_err $? check_err $?
} }
@ -672,13 +691,15 @@ check_vxlan_fdb_not_offloaded()
bridge fdb show dev vxlan0 | grep $mac | grep -q self bridge fdb show dev vxlan0 | grep $mac | grep -q self
check_err $? check_err $?
bridge fdb show dev vxlan0 | grep $mac | grep self | grep -q offload busywait "$TIMEOUT" not wait_for_offload grep_bridge_fdb $mac self \
check_fail $? bridge fdb show dev vxlan0
check_err $?
bridge fdb show dev vxlan0 | grep $zmac | grep -q self bridge fdb show dev vxlan0 | grep $zmac | grep -q self
check_err $? check_err $?
bridge fdb show dev vxlan0 | grep $zmac | grep self | grep -q offload busywait "$TIMEOUT" not wait_for_offload grep_bridge_fdb $zmac self \
check_fail $? bridge fdb show dev vxlan0
check_err $?
} }
check_bridge_fdb_not_offloaded() check_bridge_fdb_not_offloaded()
@ -688,8 +709,9 @@ check_bridge_fdb_not_offloaded()
bridge fdb show dev vxlan0 | grep $mac | grep -q master bridge fdb show dev vxlan0 | grep $mac | grep -q master
check_err $? check_err $?
bridge fdb show dev vxlan0 | grep $mac | grep master | grep -q offload busywait "$TIMEOUT" not wait_for_offload grep_bridge_fdb $mac master \
check_fail $? bridge fdb show dev vxlan0
check_err $?
} }
__offload_indication_join_vxlan_first() __offload_indication_join_vxlan_first()
@ -771,12 +793,14 @@ __offload_indication_join_vxlan_last()
ip link set dev $swp1 master br0 ip link set dev $swp1 master br0
bridge fdb show dev vxlan0 | grep $zmac | grep self | grep -q offload busywait "$TIMEOUT" not wait_for_offload grep_bridge_fdb $zmac self \
check_fail $? bridge fdb show dev vxlan0
check_err $?
ip link set dev vxlan0 master br0 ip link set dev vxlan0 master br0
bridge fdb show dev vxlan0 | grep $zmac | grep self | grep -q offload busywait "$TIMEOUT" wait_for_offload grep_bridge_fdb $zmac self \
bridge fdb show dev vxlan0
check_err $? check_err $?
log_test "offload indication - attach vxlan last" log_test "offload indication - attach vxlan last"
@ -866,8 +890,9 @@ sanitization_vlan_aware_test()
ip link set dev $swp1 master br0 &> /dev/null ip link set dev $swp1 master br0 &> /dev/null
check_fail $? check_fail $?
ip route show table local | grep 198.51.100.1 | grep -q offload busywait "$TIMEOUT" not wait_for_offload \
check_fail $? ip route show table local 198.51.100.1
check_err $?
log_test "vlan-aware - failed enslavement to bridge due to conflict" log_test "vlan-aware - failed enslavement to bridge due to conflict"
@ -929,11 +954,11 @@ offload_indication_vlan_aware_fdb_test()
bridge fdb add de:ad:be:ef:13:37 dev vxlan10 self master static \ bridge fdb add de:ad:be:ef:13:37 dev vxlan10 self master static \
dst 198.51.100.2 vlan 10 dst 198.51.100.2 vlan 10
bridge fdb show brport vxlan10 | grep de:ad:be:ef:13:37 | grep self \ busywait "$TIMEOUT" wait_for_offload grep_bridge_fdb \
| grep -q offload de:ad:be:ef:13:37 self bridge fdb show brport vxlan10
check_err $? check_err $?
bridge fdb show brport vxlan10 | grep de:ad:be:ef:13:37 | grep -v self \ busywait "$TIMEOUT" wait_for_offload grep_bridge_fdb \
| grep -q offload de:ad:be:ef:13:37 self -v bridge fdb show brport vxlan10
check_err $? check_err $?
log_test "vxlan entry offload indication - initial state" log_test "vxlan entry offload indication - initial state"
@ -943,9 +968,9 @@ offload_indication_vlan_aware_fdb_test()
RET=0 RET=0
bridge fdb del de:ad:be:ef:13:37 dev vxlan10 master vlan 10 bridge fdb del de:ad:be:ef:13:37 dev vxlan10 master vlan 10
bridge fdb show brport vxlan10 | grep de:ad:be:ef:13:37 | grep self \ busywait "$TIMEOUT" not wait_for_offload grep_bridge_fdb \
| grep -q offload de:ad:be:ef:13:37 self bridge fdb show brport vxlan10
check_fail $? check_err $?
log_test "vxlan entry offload indication - after removal from bridge" log_test "vxlan entry offload indication - after removal from bridge"
@ -954,11 +979,11 @@ offload_indication_vlan_aware_fdb_test()
RET=0 RET=0
bridge fdb add de:ad:be:ef:13:37 dev vxlan10 master static vlan 10 bridge fdb add de:ad:be:ef:13:37 dev vxlan10 master static vlan 10
bridge fdb show brport vxlan10 | grep de:ad:be:ef:13:37 | grep self \ busywait "$TIMEOUT" wait_for_offload grep_bridge_fdb \
| grep -q offload de:ad:be:ef:13:37 self bridge fdb show brport vxlan10
check_err $? check_err $?
bridge fdb show brport vxlan10 | grep de:ad:be:ef:13:37 | grep -v self \ busywait "$TIMEOUT" wait_for_offload grep_bridge_fdb \
| grep -q offload de:ad:be:ef:13:37 self -v bridge fdb show brport vxlan10
check_err $? check_err $?
log_test "vxlan entry offload indication - after re-add to bridge" log_test "vxlan entry offload indication - after re-add to bridge"
@ -968,9 +993,9 @@ offload_indication_vlan_aware_fdb_test()
RET=0 RET=0
bridge fdb del de:ad:be:ef:13:37 dev vxlan10 self bridge fdb del de:ad:be:ef:13:37 dev vxlan10 self
bridge fdb show brport vxlan10 | grep de:ad:be:ef:13:37 | grep -v self \ busywait "$TIMEOUT" not wait_for_offload grep_bridge_fdb \
| grep -q offload de:ad:be:ef:13:37 self -v bridge fdb show brport vxlan10
check_fail $? check_err $?
log_test "vxlan entry offload indication - after removal from vxlan" log_test "vxlan entry offload indication - after removal from vxlan"
@ -979,11 +1004,11 @@ offload_indication_vlan_aware_fdb_test()
RET=0 RET=0
bridge fdb add de:ad:be:ef:13:37 dev vxlan10 self dst 198.51.100.2 bridge fdb add de:ad:be:ef:13:37 dev vxlan10 self dst 198.51.100.2
bridge fdb show brport vxlan10 | grep de:ad:be:ef:13:37 | grep self \ busywait "$TIMEOUT" wait_for_offload grep_bridge_fdb \
| grep -q offload de:ad:be:ef:13:37 self bridge fdb show brport vxlan10
check_err $? check_err $?
bridge fdb show brport vxlan10 | grep de:ad:be:ef:13:37 | grep -v self \ busywait "$TIMEOUT" wait_for_offload grep_bridge_fdb \
| grep -q offload de:ad:be:ef:13:37 self -v bridge fdb show brport vxlan10
check_err $? check_err $?
log_test "vxlan entry offload indication - after re-add to vxlan" log_test "vxlan entry offload indication - after re-add to vxlan"
@ -995,28 +1020,31 @@ offload_indication_vlan_aware_decap_route_test()
{ {
RET=0 RET=0
ip route show table local | grep 198.51.100.1 | grep -q offload busywait "$TIMEOUT" wait_for_offload \
ip route show table local 198.51.100.1
check_err $? check_err $?
# Toggle PVID flag on one VxLAN device and make sure route is still # Toggle PVID flag on one VxLAN device and make sure route is still
# marked as offloaded # marked as offloaded
bridge vlan add vid 10 dev vxlan10 untagged bridge vlan add vid 10 dev vxlan10 untagged
ip route show table local | grep 198.51.100.1 | grep -q offload busywait "$TIMEOUT" wait_for_offload \
ip route show table local 198.51.100.1
check_err $? check_err $?
# Toggle PVID flag on second VxLAN device and make sure route is no # Toggle PVID flag on second VxLAN device and make sure route is no
# longer marked as offloaded # longer marked as offloaded
bridge vlan add vid 20 dev vxlan20 untagged bridge vlan add vid 20 dev vxlan20 untagged
ip route show table local | grep 198.51.100.1 | grep -q offload busywait "$TIMEOUT" not wait_for_offload \
check_fail $? ip route show table local 198.51.100.1
check_err $?
# Toggle PVID flag back and make sure route is marked as offloaded # Toggle PVID flag back and make sure route is marked as offloaded
bridge vlan add vid 10 dev vxlan10 pvid untagged bridge vlan add vid 10 dev vxlan10 pvid untagged
bridge vlan add vid 20 dev vxlan20 pvid untagged bridge vlan add vid 20 dev vxlan20 pvid untagged
ip route show table local | grep 198.51.100.1 | grep -q offload busywait "$TIMEOUT" wait_for_offload ip route show table local 198.51.100.1
check_err $? check_err $?
log_test "vxlan decap route - vni map/unmap" log_test "vxlan decap route - vni map/unmap"
@ -1069,33 +1097,33 @@ offload_indication_vlan_aware_l3vni_test()
ip link set dev vxlan0 master br0 ip link set dev vxlan0 master br0
bridge vlan add dev vxlan0 vid 10 pvid untagged bridge vlan add dev vxlan0 vid 10 pvid untagged
bridge fdb show brport vxlan0 | grep $zmac | grep self \ busywait "$TIMEOUT" wait_for_offload grep_bridge_fdb $zmac self \
| grep -q offload bridge fdb show brport vxlan0
check_err $? "vxlan tunnel not offloaded when should" check_err $? "vxlan tunnel not offloaded when should"
# Configure a VLAN interface and make sure tunnel is offloaded # Configure a VLAN interface and make sure tunnel is offloaded
ip link add link br0 name br10 up type vlan id 10 ip link add link br0 name br10 up type vlan id 10
sysctl_set net.ipv6.conf.br10.disable_ipv6 0 sysctl_set net.ipv6.conf.br10.disable_ipv6 0
ip -6 address add 2001:db8:1::1/64 dev br10 ip -6 address add 2001:db8:1::1/64 dev br10
bridge fdb show brport vxlan0 | grep $zmac | grep self \ busywait "$TIMEOUT" wait_for_offload grep_bridge_fdb $zmac self \
| grep -q offload bridge fdb show brport vxlan0
check_err $? "vxlan tunnel not offloaded when should" check_err $? "vxlan tunnel not offloaded when should"
# Unlink the VXLAN device, make sure tunnel is no longer offloaded, # Unlink the VXLAN device, make sure tunnel is no longer offloaded,
# then add it back to the bridge and make sure it is offloaded # then add it back to the bridge and make sure it is offloaded
ip link set dev vxlan0 nomaster ip link set dev vxlan0 nomaster
bridge fdb show brport vxlan0 | grep $zmac | grep self \ busywait "$TIMEOUT" not wait_for_offload grep_bridge_fdb $zmac self \
| grep -q offload bridge fdb show brport vxlan0
check_fail $? "vxlan tunnel offloaded after unlinked from bridge" check_err $? "vxlan tunnel offloaded after unlinked from bridge"
ip link set dev vxlan0 master br0 ip link set dev vxlan0 master br0
bridge fdb show brport vxlan0 | grep $zmac | grep self \ busywait "$TIMEOUT" not wait_for_offload grep_bridge_fdb $zmac self \
| grep -q offload bridge fdb show brport vxlan0
check_fail $? "vxlan tunnel offloaded despite no matching vid" check_err $? "vxlan tunnel offloaded despite no matching vid"
bridge vlan add dev vxlan0 vid 10 pvid untagged bridge vlan add dev vxlan0 vid 10 pvid untagged
bridge fdb show brport vxlan0 | grep $zmac | grep self \ busywait "$TIMEOUT" wait_for_offload grep_bridge_fdb $zmac self \
| grep -q offload bridge fdb show brport vxlan0
check_err $? "vxlan tunnel not offloaded after adding vid" check_err $? "vxlan tunnel not offloaded after adding vid"
log_test "vxlan - l3 vni" log_test "vxlan - l3 vni"

22
tools/testing/selftests/net/forwarding/lib.sh
View File

@ -248,6 +248,28 @@ busywait()
done done
} }
not()
{
"$@"
[[ $? != 0 ]]
}
grep_bridge_fdb()
{
local addr=$1; shift
local word
local flag
if [ "$1" == "self" ] || [ "$1" == "master" ]; then
word=$1; shift
if [ "$1" == "-v" ]; then
flag=$1; shift
fi
fi
$@ | grep $addr | grep $flag "$word"
}
wait_for_offload() wait_for_offload()
{ {
"$@" | grep -q offload "$@" | grep -q offload