From: Numan Siddique <num...@ovn.org> This patch makes use of the new hairpin OVN actions - chk_lb_hairpin, chk_lb_hairpin_reply and ct_snat_to_vip.
Suppose there are 'm' load balancers associated to a logical switch and each load balancer has 'n' VIPs and each VIP has 'p' backends then ovn-northd adds (m * ((n * p) + n)) hairpin logical flows. After this patch, ovn-northd adds just 5 hairpin logical flows. With this patch number of hairpin related OF flows on a chassis are almost the same as before, but in a large scale deployment, this reduces memory consumption and load on ovn-northd and SB DB ovsdb-servers. Signed-off-by: Numan Siddique <num...@ovn.org> --- northd/ovn-northd.8.xml | 65 +++++++++++----- northd/ovn-northd.c | 160 +++++++++++++--------------------------- tests/ovn-northd.at | 28 +++---- tests/ovn.at | 2 +- 4 files changed, 116 insertions(+), 139 deletions(-) diff --git a/northd/ovn-northd.8.xml b/northd/ovn-northd.8.xml index b37cecd381..8c0a4a98f5 100644 --- a/northd/ovn-northd.8.xml +++ b/northd/ovn-northd.8.xml @@ -718,24 +718,55 @@ <h3>Ingress Table 12: Pre-Hairpin</h3> <ul> <li> - For all configured load balancer VIPs a priority-2 flow that - matches on traffic that needs to be hairpinned, i.e., after load - balancing the destination IP matches the source IP, which sets - <code>reg0[6] = 1 </code> and executes <code>ct_snat(VIP)</code> - to force replies to these packets to come back through OVN. + If the logical switch has load balancer(s) configured, then a + priorirty-100 flow is added with the match + <code>ip && ct.trk&& ct.dnat</code> to check if the + packet needs to be hairpinned ( if after load balancing the destination + IP matches the source IP) or not by executing the action + <code>reg0[6] = chk_lb_hairpin();</code> and advances the packet to + the next table. + </li> + + <li> + If the logical switch has load balancer(s) configured, then a + priorirty-90 flow is added with the match <code>ip</code> to check if + the packet is a reply for a hairpinned connection or not by executing + the action <code>reg0[6] = chk_lb_hairpin_reply();</code> and advances + the packet to the next table. </li> + <li> - For all configured load balancer VIPs a priority-1 flow that - matches on replies to hairpinned traffic, i.e., destination IP is VIP, - source IP is the backend IP and source L4 port is backend port, which - sets <code>reg0[6] = 1 </code> and executes <code>ct_snat;</code>. + A priority-0 flow that simply moves traffic to the next table. </li> + </ul> + + <h3>Ingress Table 13: Nat-Hairpin</h3> + <ul> + <li> + If the logical switch has load balancer(s) configured, then a + priorirty-100 flow is added with the match + <code>ip && (ct.new || ct.est) && ct.trk && + ct.dnat && reg0[6] == 1</code> which hairpins the traffic by + NATting source IP to the load balancer VIP by executing the action + <code>ct_snat_to_vip</code> and advances the packet to the next table. + </li> + + <li> + If the logical switch has load balancer(s) configured, then a + priorirty-90 flow is added with the match + <code>ip && reg0[6] == 1</code> which matches on the replies + of hairpinned traffic ( i.e., destination IP is VIP, + source IP is the backend IP and source L4 port is backend port for L4 + load balancers) and executes <code>ct_snat</code> and advances the + packet to the next table. + </li> + <li> A priority-0 flow that simply moves traffic to the next table. </li> </ul> - <h3>Ingress Table 13: Hairpin</h3> + <h3>Ingress Table 14: Hairpin</h3> <ul> <li> A priority-1 flow that hairpins traffic matched by non-default @@ -748,7 +779,7 @@ </li> </ul> - <h3>Ingress Table 14: ARP/ND responder</h3> + <h3>Ingress Table 15: ARP/ND responder</h3> <p> This table implements ARP/ND responder in a logical switch for known @@ -1038,7 +1069,7 @@ output; </li> </ul> - <h3>Ingress Table 15: DHCP option processing</h3> + <h3>Ingress Table 16: DHCP option processing</h3> <p> This table adds the DHCPv4 options to a DHCPv4 packet from the @@ -1099,7 +1130,7 @@ next; </li> </ul> - <h3>Ingress Table 16: DHCP responses</h3> + <h3>Ingress Table 17: DHCP responses</h3> <p> This table implements DHCP responder for the DHCP replies generated by @@ -1180,7 +1211,7 @@ output; </li> </ul> - <h3>Ingress Table 17 DNS Lookup</h3> + <h3>Ingress Table 18 DNS Lookup</h3> <p> This table looks up and resolves the DNS names to the corresponding @@ -1209,7 +1240,7 @@ reg0[4] = dns_lookup(); next; </li> </ul> - <h3>Ingress Table 18 DNS Responses</h3> + <h3>Ingress Table 19 DNS Responses</h3> <p> This table implements DNS responder for the DNS replies generated by @@ -1244,7 +1275,7 @@ output; </li> </ul> - <h3>Ingress table 19 External ports</h3> + <h3>Ingress table 20 External ports</h3> <p> Traffic from the <code>external</code> logical ports enter the ingress @@ -1287,7 +1318,7 @@ output; </li> </ul> - <h3>Ingress Table 20 Destination Lookup</h3> + <h3>Ingress Table 21 Destination Lookup</h3> <p> This table implements switching behavior. It contains these logical diff --git a/northd/ovn-northd.c b/northd/ovn-northd.c index 2445c763e2..b5f7da8bd7 100644 --- a/northd/ovn-northd.c +++ b/northd/ovn-northd.c @@ -150,14 +150,15 @@ enum ovn_stage { PIPELINE_STAGE(SWITCH, IN, LB, 10, "ls_in_lb") \ PIPELINE_STAGE(SWITCH, IN, STATEFUL, 11, "ls_in_stateful") \ PIPELINE_STAGE(SWITCH, IN, PRE_HAIRPIN, 12, "ls_in_pre_hairpin") \ - PIPELINE_STAGE(SWITCH, IN, HAIRPIN, 13, "ls_in_hairpin") \ - PIPELINE_STAGE(SWITCH, IN, ARP_ND_RSP, 14, "ls_in_arp_rsp") \ - PIPELINE_STAGE(SWITCH, IN, DHCP_OPTIONS, 15, "ls_in_dhcp_options") \ - PIPELINE_STAGE(SWITCH, IN, DHCP_RESPONSE, 16, "ls_in_dhcp_response") \ - PIPELINE_STAGE(SWITCH, IN, DNS_LOOKUP, 17, "ls_in_dns_lookup") \ - PIPELINE_STAGE(SWITCH, IN, DNS_RESPONSE, 18, "ls_in_dns_response") \ - PIPELINE_STAGE(SWITCH, IN, EXTERNAL_PORT, 19, "ls_in_external_port") \ - PIPELINE_STAGE(SWITCH, IN, L2_LKUP, 20, "ls_in_l2_lkup") \ + PIPELINE_STAGE(SWITCH, IN, NAT_HAIRPIN, 13, "ls_in_nat_hairpin") \ + PIPELINE_STAGE(SWITCH, IN, HAIRPIN, 14, "ls_in_hairpin") \ + PIPELINE_STAGE(SWITCH, IN, ARP_ND_RSP, 15, "ls_in_arp_rsp") \ + PIPELINE_STAGE(SWITCH, IN, DHCP_OPTIONS, 16, "ls_in_dhcp_options") \ + PIPELINE_STAGE(SWITCH, IN, DHCP_RESPONSE, 17, "ls_in_dhcp_response") \ + PIPELINE_STAGE(SWITCH, IN, DNS_LOOKUP, 18, "ls_in_dns_lookup") \ + PIPELINE_STAGE(SWITCH, IN, DNS_RESPONSE, 19, "ls_in_dns_response") \ + PIPELINE_STAGE(SWITCH, IN, EXTERNAL_PORT, 20, "ls_in_external_port") \ + PIPELINE_STAGE(SWITCH, IN, L2_LKUP, 21, "ls_in_l2_lkup") \ \ /* Logical switch egress stages. */ \ PIPELINE_STAGE(SWITCH, OUT, PRE_LB, 0, "ls_out_pre_lb") \ @@ -5827,85 +5828,6 @@ build_lb(struct ovn_datapath *od, struct hmap *lflows) } } -static void -build_lb_hairpin_rules(struct ovn_datapath *od, struct hmap *lflows, - struct ovn_northd_lb *lb, - struct ovn_lb_vip *lb_vip, - const char *ip_match, const char *proto) -{ - if (lb_vip->n_backends == 0) { - return; - } - - struct ds action = DS_EMPTY_INITIALIZER; - struct ds match_initiator = DS_EMPTY_INITIALIZER; - struct ds match_reply = DS_EMPTY_INITIALIZER; - struct ds proto_match = DS_EMPTY_INITIALIZER; - - /* Ingress Pre-Hairpin table. - * - Priority 2: SNAT load balanced traffic that needs to be hairpinned: - * - Both SRC and DST IP match backend->ip and destination port - * matches backend->port. - * - Priority 1: unSNAT replies to hairpinned load balanced traffic. - * - SRC IP matches backend->ip, DST IP matches LB VIP and source port - * matches backend->port. - */ - ds_put_char(&match_reply, '('); - for (size_t i = 0; i < lb_vip->n_backends; i++) { - struct ovn_lb_backend *backend = &lb_vip->backends[i]; - - /* Packets that after load balancing have equal source and - * destination IPs should be hairpinned. - */ - if (lb_vip->vip_port) { - ds_put_format(&proto_match, " && %s.dst == %"PRIu16, - proto, backend->port); - } - ds_put_format(&match_initiator, "(%s.src == %s && %s.dst == %s%s)", - ip_match, backend->ip_str, ip_match, backend->ip_str, - ds_cstr(&proto_match)); - - /* Replies to hairpinned traffic are originated by backend->ip:port. */ - ds_clear(&proto_match); - if (lb_vip->vip_port) { - ds_put_format(&proto_match, " && %s.src == %"PRIu16, proto, - backend->port); - } - ds_put_format(&match_reply, "(%s.src == %s%s)", - ip_match, backend->ip_str, ds_cstr(&proto_match)); - ds_clear(&proto_match); - - if (i < lb_vip->n_backends - 1) { - ds_put_cstr(&match_initiator, " || "); - ds_put_cstr(&match_reply, " || "); - } - } - ds_put_char(&match_reply, ')'); - - /* SNAT hairpinned initiator traffic so that the reply traffic is - * also directed through OVN. - */ - ds_put_format(&action, REGBIT_HAIRPIN " = 1; ct_snat(%s);", - lb_vip->vip_str); - ovn_lflow_add_with_hint(lflows, od, S_SWITCH_IN_PRE_HAIRPIN, 2, - ds_cstr(&match_initiator), ds_cstr(&action), - &lb->nlb->header_); - - /* Replies to hairpinned traffic are destined to the LB VIP. */ - ds_put_format(&match_reply, " && %s.dst == %s", ip_match, lb_vip->vip_str); - - /* UNSNAT replies for hairpinned traffic. */ - ovn_lflow_add_with_hint(lflows, od, S_SWITCH_IN_PRE_HAIRPIN, 1, - ds_cstr(&match_reply), - REGBIT_HAIRPIN " = 1; ct_snat;", - &lb->nlb->header_); - - ds_destroy(&action); - ds_destroy(&match_initiator); - ds_destroy(&match_reply); - ds_destroy(&proto_match); -} - static void build_lb_rules(struct ovn_datapath *od, struct hmap *lflows, struct ovn_northd_lb *lb) @@ -5954,12 +5876,6 @@ build_lb_rules(struct ovn_datapath *od, struct hmap *lflows, ds_destroy(&match); ds_destroy(&action); - - /* Also install flows that allow hairpinning of traffic (i.e., if - * a load balancer VIP is DNAT-ed to a backend that happens to be - * the source of the traffic). - */ - build_lb_hairpin_rules(od, lflows, lb, lb_vip, ip_match, proto); } } @@ -6006,24 +5922,53 @@ build_stateful(struct ovn_datapath *od, struct hmap *lflows, struct hmap *lbs) ovs_assert(lb); build_lb_rules(od, lflows, lb); } +} - /* Ingress Pre-Hairpin table (Priority 0). Packets that don't need - * hairpinning should continue processing. +static void +build_lb_hairpin(struct ovn_datapath *od, struct hmap *lflows) +{ + /* Ingress Pre-Hairpin/Nat-Hairpin/Hairpin tabled (Priority 0). + * Packets that don't need hairpinning should continue processing. */ ovn_lflow_add(lflows, od, S_SWITCH_IN_PRE_HAIRPIN, 0, "1", "next;"); - - /* Ingress Hairpin table. - * - Priority 0: Packets that don't need hairpinning should continue - * processing. - * - Priority 1: Packets that were SNAT-ed for hairpinning should be - * looped back (i.e., swap ETH addresses and send back on inport). - */ - ovn_lflow_add(lflows, od, S_SWITCH_IN_HAIRPIN, 1, REGBIT_HAIRPIN " == 1", - "eth.dst <-> eth.src;" - "outport = inport;" - "flags.loopback = 1;" - "output;"); + ovn_lflow_add(lflows, od, S_SWITCH_IN_NAT_HAIRPIN, 0, "1", "next;"); ovn_lflow_add(lflows, od, S_SWITCH_IN_HAIRPIN, 0, "1", "next;"); + + if (has_lb_vip(od)) { + /* Check if the packet needs to be hairpinned. */ + ovn_lflow_add_with_hint(lflows, od, S_SWITCH_IN_PRE_HAIRPIN, 100, + "ip && ct.trk && ct.dnat", + REGBIT_HAIRPIN " = chk_lb_hairpin(); next;", + &od->nbs->header_); + + /* Check if the packet is a reply of hairpinned traffic. */ + ovn_lflow_add_with_hint(lflows, od, S_SWITCH_IN_PRE_HAIRPIN, 90, "ip", + REGBIT_HAIRPIN " = chk_lb_hairpin_reply(); " + "next;", &od->nbs->header_); + + /* If packet needs to be hairpinned, snat the src ip with the VIP. */ + ovn_lflow_add_with_hint(lflows, od, S_SWITCH_IN_NAT_HAIRPIN, 100, + "ip && (ct.new || ct.est) && ct.trk && ct.dnat" + " && "REGBIT_HAIRPIN " == 1", + "ct_snat_to_vip; next;", + &od->nbs->header_); + + /* For the reply of hairpinned traffic, snat the src ip to the VIP. */ + ovn_lflow_add_with_hint(lflows, od, S_SWITCH_IN_NAT_HAIRPIN, 90, + "ip && "REGBIT_HAIRPIN " == 1", "ct_snat;", + &od->nbs->header_); + + /* Ingress Hairpin table. + * - Priority 1: Packets that were SNAT-ed for hairpinning should be + * looped back (i.e., swap ETH addresses and send back on inport). + */ + ovn_lflow_add(lflows, od, S_SWITCH_IN_HAIRPIN, 1, + REGBIT_HAIRPIN " == 1", + "eth.dst <-> eth.src;" + "outport = inport;" + "flags.loopback = 1;" + "output;"); + } } /* Build logical flows for the forwarding groups */ @@ -7360,6 +7305,7 @@ build_lswitch_lflows_pre_acl_and_acl(struct ovn_datapath *od, build_qos(od, lflows); build_lb(od, lflows); build_stateful(od, lflows, lbs); + build_lb_hairpin(od, lflows); } } diff --git a/tests/ovn-northd.at b/tests/ovn-northd.at index 7805763445..85f61f3577 100644 --- a/tests/ovn-northd.at +++ b/tests/ovn-northd.at @@ -1728,13 +1728,13 @@ action=(reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implici AT_CHECK([grep "ls_out_acl" sw0flows | grep pg0 | sort], [0], [dnl table=5 (ls_out_acl ), priority=2003 , dnl match=(outport == @pg0 && ip6 && udp), dnl -action=(reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=20); };) +action=(reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=21); };) ]) AT_CHECK([grep "ls_out_acl" sw1flows | grep pg0 | sort], [0], [dnl table=5 (ls_out_acl ), priority=2003 , dnl match=(outport == @pg0 && ip6 && udp), dnl -action=(reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=20); };) +action=(reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=21); };) ]) AS_BOX([2]) @@ -1749,19 +1749,19 @@ AT_CAPTURE_FILE([sw1flows2]) AT_CHECK([grep "ls_out_acl" sw0flows2 | grep pg0 | sort], [0], [dnl table=5 (ls_out_acl ), priority=2002 , dnl match=(outport == @pg0 && ip4 && udp), dnl -action=(reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=20); };) +action=(reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=21); };) table=5 (ls_out_acl ), priority=2003 , dnl match=(outport == @pg0 && ip6 && udp), dnl -action=(reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=20); };) +action=(reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=21); };) ]) AT_CHECK([grep "ls_out_acl" sw1flows2 | grep pg0 | sort], [0], [dnl table=5 (ls_out_acl ), priority=2002 , dnl match=(outport == @pg0 && ip4 && udp), dnl -action=(reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=20); };) +action=(reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=21); };) table=5 (ls_out_acl ), priority=2003 , dnl match=(outport == @pg0 && ip6 && udp), dnl -action=(reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=20); };) +action=(reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=21); };) ]) AS_BOX([3]) @@ -1780,16 +1780,16 @@ match=(reg0[[7]] == 1 && (outport == @pg0 && ip)), action=(reg0[[1]] = 1; next;) match=(reg0[[8]] == 1 && (outport == @pg0 && ip)), action=(next;) table=5 (ls_out_acl ), priority=2002 , dnl match=((reg0[[10]] == 1) && outport == @pg0 && ip4 && udp), dnl -action=(ct_commit { ct_label.blocked = 1; }; reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=20); };) +action=(ct_commit { ct_label.blocked = 1; }; reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=21); };) table=5 (ls_out_acl ), priority=2002 , dnl match=((reg0[[9]] == 1) && outport == @pg0 && ip4 && udp), dnl -action=(reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=20); };) +action=(reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=21); };) table=5 (ls_out_acl ), priority=2003 , dnl match=((reg0[[10]] == 1) && outport == @pg0 && ip6 && udp), dnl -action=(ct_commit { ct_label.blocked = 1; }; reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=20); };) +action=(ct_commit { ct_label.blocked = 1; }; reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=21); };) table=5 (ls_out_acl ), priority=2003 , dnl match=((reg0[[9]] == 1) && outport == @pg0 && ip6 && udp), dnl -action=(reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=20); };) +action=(reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=21); };) ]) AT_CHECK([grep "ls_out_acl" sw1flows3 | grep pg0 | sort], [0], [dnl @@ -1799,16 +1799,16 @@ match=(reg0[[7]] == 1 && (outport == @pg0 && ip)), action=(reg0[[1]] = 1; next;) match=(reg0[[8]] == 1 && (outport == @pg0 && ip)), action=(next;) table=5 (ls_out_acl ), priority=2002 , dnl match=((reg0[[10]] == 1) && outport == @pg0 && ip4 && udp), dnl -action=(ct_commit { ct_label.blocked = 1; }; reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=20); };) +action=(ct_commit { ct_label.blocked = 1; }; reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=21); };) table=5 (ls_out_acl ), priority=2002 , dnl match=((reg0[[9]] == 1) && outport == @pg0 && ip4 && udp), dnl -action=(reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=20); };) +action=(reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=21); };) table=5 (ls_out_acl ), priority=2003 , dnl match=((reg0[[10]] == 1) && outport == @pg0 && ip6 && udp), dnl -action=(ct_commit { ct_label.blocked = 1; }; reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=20); };) +action=(ct_commit { ct_label.blocked = 1; }; reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=21); };) table=5 (ls_out_acl ), priority=2003 , dnl match=((reg0[[9]] == 1) && outport == @pg0 && ip6 && udp), dnl -action=(reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=20); };) +action=(reg0 = 0; reject { /* eth.dst <-> eth.src; ip.dst <-> ip.src; is implicit. */ outport <-> inport; next(pipeline=ingress,table=21); };) ]) AT_CLEANUP diff --git a/tests/ovn.at b/tests/ovn.at index 4883ddb8fc..2253d0bde1 100644 --- a/tests/ovn.at +++ b/tests/ovn.at @@ -15093,7 +15093,7 @@ logical_port=ls1-lp_ext1` # There should be a flow in hv2 to drop traffic from ls1-lp_ext1 destined # to router mac. AT_CHECK([as hv2 ovs-ofctl dump-flows br-int \ -table=27,dl_src=f0:00:00:00:00:03,dl_dst=a0:10:00:00:00:01 | \ +table=28,dl_src=f0:00:00:00:00:03,dl_dst=a0:10:00:00:00:01 | \ grep -c "actions=drop"], [0], [1 ]) -- 2.28.0 _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev