At the moment ovs meters are reconfigured by ovn just when a meter is allocated or removed while updates for an already allocated meter are ignored. This issue can be easily verified with the following reproducer:
$ovn-nbctl meter-add meter0 drop 10 pktps $ovn-nbctl --log --meter=meter0 acl-add sw0 to-lport 1000 'tcp.dst == 80' drop $ovn-nbctl --may-exist meter-add meter0 drop 20 pktps $ovs-ofctl -O OpenFlow15 dump-meters br-int In order to fix the issue introduce SB_meter node in the incremetal processing engine and add it as input for lflow_output one. Sync OVS meters in ofctl_put() to push changes in SB meter/SB meter bands tables. Reported-at: https://bugzilla.redhat.com/show_bug.cgi?id=1939524 Signed-off-by: Lorenzo Bianconi <lorenzo.bianc...@redhat.com> --- Changes since v7: - implement full-compare support in ofctrl module - drop SB_meter IP management Changes since v6: - move ovs sync code back to ofctrl_put() - remove meter IP node and link SB_meter node to lflow_output one - add new unit-tests Changes since v5: - add size parameter to extend_table in order to reduce the size Changes since v4: - add offset parameter to ovn_extend_table_init - rebase on top of ovn master Changes since v3: - move full meter management in the IP engine Changes since v2: - move meter ip into lflow ip - add new test in ovn-performance.at - manage metering ip full-recompute Changes since v1: - add IP refactor to the series - rebase on top of ovn master --- controller/ofctrl.c | 200 +++++++++++++++++++++++++++++++----- controller/ovn-controller.c | 12 ++- tests/ovn-performance.at | 22 ++++ tests/ovn.at | 74 +++++++++++++ tests/system-ovn.at | 17 +++ 5 files changed, 301 insertions(+), 24 deletions(-) diff --git a/controller/ofctrl.c b/controller/ofctrl.c index 19aa787f9..5b4c823ef 100644 --- a/controller/ofctrl.c +++ b/controller/ofctrl.c @@ -360,6 +360,21 @@ static struct ovn_extend_table *groups; /* A reference to the meter_table. */ static struct ovn_extend_table *meters; +/* Installed meter bands. */ +struct meter_band_data { + int64_t burst_size; + int64_t rate; +}; + +struct meter_band_entry { + struct meter_band_data *bands; + size_t n_bands; +}; + +static struct shash meter_bands; + +static void ofctrl_meter_bands_destroy(void); + /* MFF_* field ID for our Geneve option. In S_TLV_TABLE_MOD_SENT, this is * the option we requested (we don't know whether we obtained it yet). In * S_CLEAR_FLOWS or S_UPDATE_FLOWS, this is really the option we have. */ @@ -397,6 +412,7 @@ ofctrl_init(struct ovn_extend_table *group_table, ovn_init_symtab(&symtab); groups = group_table; meters = meter_table; + shash_init(&meter_bands); } /* S_NEW, for a new connection. @@ -814,6 +830,7 @@ ofctrl_destroy(void) rconn_packet_counter_destroy(tx_counter); expr_symtab_destroy(&symtab); shash_destroy(&symtab); + ofctrl_meter_bands_destroy(); } uint64_t @@ -1979,26 +1996,14 @@ add_meter_string(struct ovn_extend_table_info *m_desired, } static void -add_meter(struct ovn_extend_table_info *m_desired, - const struct sbrec_meter_table *meter_table, - struct ovs_list *msgs) +update_ovs_meter(struct ovn_extend_table_info *entry, + const struct sbrec_meter *sb_meter, int cmd, + struct ovs_list *msgs) { - const struct sbrec_meter *sb_meter; - SBREC_METER_TABLE_FOR_EACH (sb_meter, meter_table) { - if (!strcmp(m_desired->name, sb_meter->name)) { - break; - } - } - - if (!sb_meter) { - static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1); - VLOG_ERR_RL(&rl, "could not find meter named \"%s\"", m_desired->name); - return; - } struct ofputil_meter_mod mm; - mm.command = OFPMC13_ADD; - mm.meter.meter_id = m_desired->table_id; + mm.command = cmd; + mm.meter.meter_id = entry->table_id; mm.meter.flags = OFPMF13_STATS; if (!strcmp(sb_meter->unit, "pktps")) { @@ -2031,6 +2036,158 @@ add_meter(struct ovn_extend_table_info *m_desired, free(mm.meter.bands); } +static void +ofctrl_meter_bands_destroy(void) +{ + struct shash_node *node, *next; + SHASH_FOR_EACH_SAFE (node, next, &meter_bands) { + struct meter_band_entry *mb = node->data; + shash_delete(&meter_bands, node); + free(mb->bands); + free(mb); + } + shash_destroy(&meter_bands); +} + +static bool +ofctrl_meter_bands_check(const struct sbrec_meter *sb_meter, + struct meter_band_entry *mb) +{ + if (mb->n_bands != sb_meter->n_bands) { + return true; + } + + for (int i = 0; i < sb_meter->n_bands; i++) { + int j; + for (j = 0; j < mb->n_bands; j++) { + if (sb_meter->bands[i]->rate == mb->bands[j].rate && + sb_meter->bands[i]->burst_size == mb->bands[j].burst_size) { + break; + } + } + if (j == mb->n_bands) { + return true; + } + } + return false; +} + +static void +ofctrl_meter_bands_alloc(const struct sbrec_meter *sb_meter, + struct ovn_extend_table_info *entry, + struct ovs_list *msgs) +{ + struct meter_band_entry *mb = mb = xzalloc(sizeof *mb); + mb->n_bands = sb_meter->n_bands; + mb->bands = xcalloc(mb->n_bands, sizeof *mb->bands); + for (int i = 0; i < sb_meter->n_bands; i++) { + mb->bands[i].rate = sb_meter->bands[i]->rate; + mb->bands[i].burst_size = sb_meter->bands[i]->burst_size; + } + shash_add(&meter_bands, entry->name, mb); + update_ovs_meter(entry, sb_meter, OFPMC13_ADD, msgs); +} + +static void +ofctrl_meter_bands_update(const struct sbrec_meter *sb_meter, + struct ovn_extend_table_info *entry, + struct ovs_list *msgs) +{ + struct meter_band_entry *mb = + shash_find_data(&meter_bands, entry->name); + if (!mb) { + ofctrl_meter_bands_alloc(sb_meter, entry, msgs); + return; + } + + if (!ofctrl_meter_bands_check(sb_meter, mb)) { + return; + } + + free(mb->bands); + mb->n_bands = sb_meter->n_bands; + mb->bands = xcalloc(mb->n_bands, sizeof *mb->bands); + for (int i = 0; i < sb_meter->n_bands; i++) { + mb->bands[i].rate = sb_meter->bands[i]->rate; + mb->bands[i].burst_size = sb_meter->bands[i]->burst_size; + } + + update_ovs_meter(entry, sb_meter, OFPMC13_MODIFY, msgs); +} + +static void +ofctrl_meter_bands_erase(struct ovn_extend_table_info *entry, + struct ovs_list *msgs) +{ + struct meter_band_entry *mb = + shash_find_and_delete(&meter_bands, entry->name); + if (mb) { + /* Delete the meter. */ + struct ofputil_meter_mod mm = { + .command = OFPMC13_DELETE, + .meter = { .meter_id = entry->table_id }, + }; + add_meter_mod(&mm, msgs); + + free(mb->bands); + free(mb); + } +} + +static void +ofctrl_meter_bands_sync(const struct sbrec_meter_table *meter_table, + struct ovs_list *msgs) +{ + struct ovn_extend_table_info *m_desired; + HMAP_FOR_EACH (m_desired, hmap_node, &meters->desired) { + struct ovn_extend_table_info *m_existing = + ovn_extend_table_lookup(&meters->existing, m_desired); + if (!m_existing) { + /* Here we are assuming desired and existing are always aligned. + * ofctrl_meter_bands_sync() must run after + * ovn_extend_table_sync() on meter extend table. + */ + continue; + } + + const struct sbrec_meter *sb_meter; + SBREC_METER_TABLE_FOR_EACH (sb_meter, meter_table) { + if (!strcmp(m_desired->name, sb_meter->name)) { + break; + } + } + + if (sb_meter) { + /* OFPMC13_ADD or OFPMC13_MODIFY */ + ofctrl_meter_bands_update(sb_meter, m_existing, msgs); + } else { + /* OFPMC13_DELETE */ + ofctrl_meter_bands_erase(m_existing, msgs); + } + } +} + +static void +add_meter(struct ovn_extend_table_info *m_desired, + const struct sbrec_meter_table *meter_table, + struct ovs_list *msgs) +{ + const struct sbrec_meter *sb_meter; + SBREC_METER_TABLE_FOR_EACH (sb_meter, meter_table) { + if (!strcmp(m_desired->name, sb_meter->name)) { + break; + } + } + + if (!sb_meter) { + static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1); + VLOG_ERR_RL(&rl, "could not find meter named \"%s\"", m_desired->name); + return; + } + + ofctrl_meter_bands_alloc(sb_meter, m_desired, msgs); +} + static void installed_flow_add(struct ovn_flow *d, struct ofputil_bundle_ctrl_msg *bc, @@ -2505,17 +2662,14 @@ ofctrl_put(struct ovn_desired_flow_table *lflow_table, struct ovn_extend_table_info *m_installed, *next_meter; EXTEND_TABLE_FOR_EACH_INSTALLED (m_installed, next_meter, meters) { /* Delete the meter. */ - struct ofputil_meter_mod mm = { - .command = OFPMC13_DELETE, - .meter = { .meter_id = m_installed->table_id }, - }; - add_meter_mod(&mm, &msgs); - + ofctrl_meter_bands_erase(m_installed, &msgs); ovn_extend_table_remove_existing(meters, m_installed); } /* Sync the contents of meters->desired to meters->existing. */ ovn_extend_table_sync(meters); + /* Sync installed meter bands. */ + ofctrl_meter_bands_sync(meter_table, &msgs); if (!ovs_list_is_empty(&msgs)) { /* Add a barrier to the list of messages. */ diff --git a/controller/ovn-controller.c b/controller/ovn-controller.c index c09018243..6f0c095c9 100644 --- a/controller/ovn-controller.c +++ b/controller/ovn-controller.c @@ -968,7 +968,8 @@ ctrl_register_ovs_idl(struct ovsdb_idl *ovs_idl) SB_NODE(dhcpv6_options, "dhcpv6_options") \ SB_NODE(dns, "dns") \ SB_NODE(load_balancer, "load_balancer") \ - SB_NODE(fdb, "fdb") + SB_NODE(fdb, "fdb") \ + SB_NODE(meter, "meter") enum sb_engine_node { #define SB_NODE(NAME, NAME_STR) SB_##NAME, @@ -2718,6 +2719,13 @@ lflow_output_sb_fdb_handler(struct engine_node *node, void *data) return handled; } +static bool +lflow_output_sb_meter_handler(struct engine_node *node, void *data OVS_UNUSED) +{ + engine_set_node_state(node, EN_UPDATED); + return true; +} + struct ed_type_pflow_output { /* Desired physical flows. */ struct ovn_desired_flow_table flow_table; @@ -3316,6 +3324,8 @@ main(int argc, char *argv[]) lflow_output_sb_load_balancer_handler); engine_add_input(&en_lflow_output, &en_sb_fdb, lflow_output_sb_fdb_handler); + engine_add_input(&en_lflow_output, &en_sb_meter, + lflow_output_sb_meter_handler); engine_add_input(&en_ct_zones, &en_ovs_open_vswitch, NULL); engine_add_input(&en_ct_zones, &en_ovs_bridge, NULL); diff --git a/tests/ovn-performance.at b/tests/ovn-performance.at index 10341ad72..bc133f93b 100644 --- a/tests/ovn-performance.at +++ b/tests/ovn-performance.at @@ -543,6 +543,28 @@ OVN_CONTROLLER_EXPECT_HIT( [as hv3 ovs-vsctl set interface vgw3 external-ids:ovn-egress-iface=true] ) +ovn-nbctl --wait=hv meter-add meter0 drop 100 pktps 10 + +OVN_CONTROLLER_EXPECT_NO_HIT( + [hv1 hv2 hv3 hv4], [lflow_run], + [ovn-nbctl --wait=hv copp-add copp0 arp meter0] +) + +OVN_CONTROLLER_EXPECT_NO_HIT( + [hv1 hv2 hv3 hv4], [lflow_run], + [ovn-nbctl --wait=hv lr-copp-add copp0 lr1] +) + +OVN_CONTROLLER_EXPECT_NO_HIT( + [hv1 hv2 hv3 hv4], [lflow_run], + [ovn-nbctl --wait=hv --may-exist meter-add meter0 drop 200 pktps 10] +) + +OVN_CONTROLLER_EXPECT_NO_HIT( + [hv1 hv2 hv3 hv4], [lflow_run], + [ovn-nbctl --wait=hv meter-del meter0] +) + for i in 1 2; do j=$((i%2 + 1)) lp=lp$i diff --git a/tests/ovn.at b/tests/ovn.at index 69270601a..d5ecb3fb4 100644 --- a/tests/ovn.at +++ b/tests/ovn.at @@ -29744,3 +29744,77 @@ OVS_WAIT_UNTIL([ OVN_CLEANUP([hv1],[hv2]) AT_CLEANUP ]) + +OVN_FOR_EACH_NORTHD([ +AT_SETUP([ovn-controller - check meters update]) +AT_KEYWORDS([meters-update]) + +ovn_start + +net_add n1 +sim_add hv1 +as hv1 +ovs-vsctl add-br br-phys +ovn_attach n1 br-phys 192.168.0.10 + +check ovn-nbctl ls-add sw0 +check ovn-nbctl lsp-add sw0 lsp + +as hv1 ovs-vsctl \ + -- add-port br-int vif1 \ + -- set Interface vif1 external_ids:iface-id=lsp + +# Wait for port to be bound. +wait_row_count Chassis 1 name=hv1 +ch=$(fetch_column Chassis _uuid name=hv1) +wait_row_count Port_Binding 1 logical_port=lsp chassis=$ch + +# Add a new meter +check ovn-nbctl --event lb-add lb0 192.168.1.100:80 "" +check ovn-nbctl ls-lb-add sw0 lb0 +check ovn-nbctl meter-add meter0 drop 10 pktps +ovn-nbctl --wait=hv copp-add copp0 event-elb meter0 +ovn-nbctl --wait=hv ls-copp-add copp0 sw0 +check ovn-nbctl --wait=hv sync + +AT_CHECK([as hv1 ovs-ofctl -OOpenFlow15 dump-meters br-int | grep -q rate=10], [0]) +AT_CHECK([as hv1 ovs-ofctl dump-flows br-int | grep -q meter_id=1], [0]) + +# Update existing meter +check ovn-nbctl --may-exist meter-add meter0 drop 20 pktps +check ovn-nbctl --wait=hv sync + +AT_CHECK([as hv1 ovs-ofctl -OOpenFlow15 dump-meters br-int | grep -q rate=20], [0]) + +# Add a new meter +check ovn-nbctl meter-add meter1 drop 30 pktps +check ovn-nbctl --log --severity=alert --meter=meter1 \ + --name=dns acl-add sw0 to-lport 1000 'udp.dst == 53' drop +check ovn-nbctl --wait=hv sync +AT_CHECK([as hv1 ovs-ofctl -OOpenFlow15 dump-meters br-int | grep -q rate=30], [0]) +AT_CHECK([as hv1 ovs-ofctl dump-flows br-int | grep -q meter_id=2], [0]) + +# Remove meter0 +check ovn-nbctl meter-del meter0 +check ovn-nbctl --wait=hv sync +AT_CHECK([as hv1 ovs-ofctl -OOpenFlow15 dump-meters br-int | grep -q rate=10], [1]) +AT_CHECK([as hv1 ovs-ofctl dump-flows br-int | grep -q meter_id=1], [1]) + +check ovn-nbctl meter-del meter1 +check ovn-nbctl --wait=hv sync +AT_CHECK([as hv1 ovs-ofctl -OOpenFlow15 dump-meters br-int | grep -q rate=30], [1]) + +# create meters in the opposite order +check ovn-nbctl --log --severity=alert --meter=meter2 \ + --name=dns acl-add sw0 to-lport 1000 'tcp.dst == 80' drop +check ovn-nbctl meter-add meter2 drop 100 pktps +check ovn-nbctl --wait=hv sync +AT_CHECK([as hv1 ovs-ofctl -OOpenFlow15 dump-meters br-int | grep -q rate=100], [0]) +AT_CHECK([as hv1 ovs-ofctl dump-flows br-int | grep -q meter_id=1], [0]) + +check ovn-nbctl meter-del meter2 +AT_CHECK([as hv1 ovs-ofctl -OOpenFlow15 dump-meters br-int | grep -q rate=100], [1]) + +OVN_CLEANUP([hv1]) +AT_CLEANUP +]) diff --git a/tests/system-ovn.at b/tests/system-ovn.at index f57d752d4..d1770408e 100644 --- a/tests/system-ovn.at +++ b/tests/system-ovn.at @@ -6661,8 +6661,25 @@ OVS_WAIT_UNTIL([ test "${n_reject}" = "2" ]) kill $(pidof tcpdump) +rm -f reject.pcap + +# Let's update the meter +NS_EXEC([sw01], [tcpdump -l -n -i sw01 icmp -Q in > reject.pcap &]) +check ovn-nbctl --may-exist meter-add acl-meter drop 10 pktps 0 +ip netns exec sw01 scapy -H <<-EOF +p = IP(src="192.168.1.2", dst="192.168.1.1") / UDP(dport = 12345) / Raw(b"X"*64) +send (p, iface='sw01', loop = 0, verbose = 0, count = 100) +EOF +# 10pps + 1 burst size +OVS_WAIT_UNTIL([ + n_reject=$(grep unreachable reject.pcap | wc -l) + test "${n_reject}" = "20" +]) + +kill $(pidof tcpdump) rm -f reject.pcap + NS_EXEC([sw01], [tcpdump -l -n -i sw01 icmp -Q in > reject.pcap &]) check ovn-nbctl --wait=hv copp-del copp0 reject -- 2.35.1 _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev
