Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017-present Open Networking Foundation |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include <core.p4> |
| 18 | #include <v1model.p4> |
| 19 | |
| 20 | #include "../header.p4" |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 21 | |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 22 | control Next (inout parsed_headers_t hdr, |
| 23 | inout fabric_metadata_t fabric_metadata, |
| 24 | inout standard_metadata_t standard_metadata) { |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 25 | |
Yi Tseng | 47eac89 | 2018-07-11 02:17:04 +0800 | [diff] [blame] | 26 | /* |
| 27 | * General actions. |
| 28 | */ |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 29 | @hidden |
| 30 | action output(port_num_t port_num) { |
| 31 | standard_metadata.egress_spec = port_num; |
Yi Tseng | 20f9e7b | 2018-05-24 23:27:39 +0800 | [diff] [blame] | 32 | } |
| 33 | |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 34 | @hidden |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 35 | action rewrite_smac(mac_addr_t smac) { |
| 36 | hdr.ethernet.src_addr = smac; |
| 37 | } |
| 38 | |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 39 | @hidden |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 40 | action rewrite_dmac(mac_addr_t dmac) { |
| 41 | hdr.ethernet.dst_addr = dmac; |
| 42 | } |
| 43 | |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 44 | @hidden |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 45 | action routing(port_num_t port_num, mac_addr_t smac, mac_addr_t dmac) { |
| 46 | rewrite_smac(smac); |
| 47 | rewrite_dmac(dmac); |
| 48 | output(port_num); |
| 49 | } |
| 50 | |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 51 | #ifdef WITH_XCONNECT |
| 52 | /* |
| 53 | * Cross-connect table. |
| 54 | * Bidirectional forwarding for the same next id. |
| 55 | */ |
| 56 | direct_counter(CounterType.packets_and_bytes) xconnect_counter; |
| 57 | |
| 58 | action output_xconnect(port_num_t port_num) { |
| 59 | output(port_num); |
| 60 | xconnect_counter.count(); |
| 61 | } |
| 62 | |
| 63 | action set_next_id_xconnect(next_id_t next_id) { |
| 64 | fabric_metadata.next_id = next_id; |
| 65 | xconnect_counter.count(); |
| 66 | } |
| 67 | |
| 68 | table xconnect { |
| 69 | key = { |
| 70 | standard_metadata.ingress_port: exact @name("ig_port"); |
| 71 | fabric_metadata.next_id: exact @name("next_id"); |
| 72 | } |
| 73 | actions = { |
| 74 | output_xconnect; |
| 75 | set_next_id_xconnect; |
| 76 | @defaultonly nop; |
| 77 | } |
| 78 | counters = xconnect_counter; |
| 79 | const default_action = nop(); |
Carmelo Cascone | 70e816b | 2019-03-19 16:15:47 -0700 | [diff] [blame] | 80 | size = XCONNECT_NEXT_TABLE_SIZE; |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 81 | } |
| 82 | #endif // WITH_XCONNECT |
| 83 | |
| 84 | #ifdef WITH_SIMPLE_NEXT |
Yi Tseng | 47eac89 | 2018-07-11 02:17:04 +0800 | [diff] [blame] | 85 | /* |
| 86 | * Simple Table. |
| 87 | * Do a single egress action based on next id. |
| 88 | */ |
| 89 | direct_counter(CounterType.packets_and_bytes) simple_counter; |
| 90 | |
| 91 | action output_simple(port_num_t port_num) { |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 92 | output(port_num); |
Yi Tseng | 47eac89 | 2018-07-11 02:17:04 +0800 | [diff] [blame] | 93 | simple_counter.count(); |
| 94 | } |
| 95 | |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 96 | action routing_simple(port_num_t port_num, mac_addr_t smac, mac_addr_t dmac) { |
| 97 | routing(port_num, smac, dmac); |
| 98 | simple_counter.count(); |
Yi Tseng | 47eac89 | 2018-07-11 02:17:04 +0800 | [diff] [blame] | 99 | } |
| 100 | |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 101 | table simple { |
| 102 | key = { |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 103 | fabric_metadata.next_id: exact @name("next_id"); |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 104 | } |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 105 | actions = { |
Yi Tseng | 47eac89 | 2018-07-11 02:17:04 +0800 | [diff] [blame] | 106 | output_simple; |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 107 | routing_simple; |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 108 | @defaultonly nop; |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 109 | } |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 110 | const default_action = nop(); |
Yi Tseng | 3a5731e | 2018-01-22 11:38:58 -0800 | [diff] [blame] | 111 | counters = simple_counter; |
Carmelo Cascone | 70e816b | 2019-03-19 16:15:47 -0700 | [diff] [blame] | 112 | size = SIMPLE_NEXT_TABLE_SIZE; |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 113 | } |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 114 | #endif // WITH_SIMPLE_NEXT |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 115 | |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 116 | #ifdef WITH_HASHED_NEXT |
Yi Tseng | 47eac89 | 2018-07-11 02:17:04 +0800 | [diff] [blame] | 117 | /* |
| 118 | * Hashed table. |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 119 | * Execute an action profile selector based on next id. |
Yi Tseng | 47eac89 | 2018-07-11 02:17:04 +0800 | [diff] [blame] | 120 | */ |
Carmelo Cascone | 70e816b | 2019-03-19 16:15:47 -0700 | [diff] [blame] | 121 | @max_group_size(HASHED_SELECTOR_MAX_GROUP_SIZE) |
Daniele Moro | 5a2de71 | 2019-09-24 14:34:07 -0700 | [diff] [blame] | 122 | #ifdef _CUSTOM_HASHED_SELECTOR_ANNOTATION |
| 123 | _CUSTOM_HASHED_SELECTOR_ANNOTATION |
| 124 | #endif |
Carmelo Cascone | 70e816b | 2019-03-19 16:15:47 -0700 | [diff] [blame] | 125 | action_selector(HashAlgorithm.crc16, HASHED_ACT_PROFILE_SIZE, 32w16) hashed_selector; |
Yi Tseng | 47eac89 | 2018-07-11 02:17:04 +0800 | [diff] [blame] | 126 | direct_counter(CounterType.packets_and_bytes) hashed_counter; |
| 127 | |
| 128 | action output_hashed(port_num_t port_num) { |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 129 | output(port_num); |
Yi Tseng | 47eac89 | 2018-07-11 02:17:04 +0800 | [diff] [blame] | 130 | hashed_counter.count(); |
| 131 | } |
| 132 | |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 133 | action routing_hashed(port_num_t port_num, mac_addr_t smac, mac_addr_t dmac) { |
| 134 | routing(port_num, smac, dmac); |
| 135 | hashed_counter.count(); |
Yi Tseng | 47eac89 | 2018-07-11 02:17:04 +0800 | [diff] [blame] | 136 | } |
| 137 | |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 138 | table hashed { |
| 139 | key = { |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 140 | fabric_metadata.next_id: exact @name("next_id"); |
Robert MacDavid | bec6b6a | 2020-05-21 21:32:38 -0400 | [diff] [blame] | 141 | fabric_metadata.ipv4_src_addr: selector; |
| 142 | fabric_metadata.ipv4_dst_addr: selector; |
Yi Tseng | 1d84267 | 2017-11-28 16:06:52 -0800 | [diff] [blame] | 143 | fabric_metadata.ip_proto: selector; |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 144 | fabric_metadata.l4_sport: selector; |
| 145 | fabric_metadata.l4_dport: selector; |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 146 | } |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 147 | actions = { |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 148 | output_hashed; |
| 149 | routing_hashed; |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 150 | @defaultonly nop; |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 151 | } |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 152 | implementation = hashed_selector; |
Yi Tseng | 3a5731e | 2018-01-22 11:38:58 -0800 | [diff] [blame] | 153 | counters = hashed_counter; |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 154 | const default_action = nop(); |
Carmelo Cascone | 70e816b | 2019-03-19 16:15:47 -0700 | [diff] [blame] | 155 | size = HASHED_NEXT_TABLE_SIZE; |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 156 | } |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 157 | #endif // WITH_HASHED_NEXT |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 158 | |
| 159 | /* |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 160 | * Multicast |
| 161 | * Maps next IDs to PRE multicat group IDs. |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 162 | */ |
Yi Tseng | 47eac89 | 2018-07-11 02:17:04 +0800 | [diff] [blame] | 163 | direct_counter(CounterType.packets_and_bytes) multicast_counter; |
| 164 | |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 165 | action set_mcast_group_id(mcast_group_id_t group_id) { |
| 166 | standard_metadata.mcast_grp = group_id; |
Carmelo Cascone | 1e8843f | 2018-07-19 19:01:12 +0200 | [diff] [blame] | 167 | fabric_metadata.is_multicast = _TRUE; |
Yi Tseng | 47eac89 | 2018-07-11 02:17:04 +0800 | [diff] [blame] | 168 | multicast_counter.count(); |
Carmelo Cascone | a106140 | 2018-02-03 17:39:59 -0800 | [diff] [blame] | 169 | } |
| 170 | |
Carmelo Cascone | a106140 | 2018-02-03 17:39:59 -0800 | [diff] [blame] | 171 | table multicast { |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 172 | key = { |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 173 | fabric_metadata.next_id: exact @name("next_id"); |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 174 | } |
| 175 | actions = { |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 176 | set_mcast_group_id; |
| 177 | @defaultonly nop; |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 178 | } |
Carmelo Cascone | a106140 | 2018-02-03 17:39:59 -0800 | [diff] [blame] | 179 | counters = multicast_counter; |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 180 | const default_action = nop(); |
Carmelo Cascone | 70e816b | 2019-03-19 16:15:47 -0700 | [diff] [blame] | 181 | size = MULTICAST_NEXT_TABLE_SIZE; |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 182 | } |
| 183 | |
| 184 | apply { |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 185 | #ifdef WITH_XCONNECT |
| 186 | // xconnect might set a new next_id. |
| 187 | xconnect.apply(); |
| 188 | #endif // WITH_XCONNECT |
| 189 | #ifdef WITH_SIMPLE_NEXT |
| 190 | simple.apply(); |
| 191 | #endif // WITH_SIMPLE_NEXT |
| 192 | #ifdef WITH_HASHED_NEXT |
| 193 | hashed.apply(); |
| 194 | #endif // WITH_HASHED_NEXT |
| 195 | multicast.apply(); |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 196 | } |
| 197 | } |
| 198 | |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 199 | control EgressNextControl (inout parsed_headers_t hdr, |
| 200 | inout fabric_metadata_t fabric_metadata, |
| 201 | inout standard_metadata_t standard_metadata) { |
| 202 | @hidden |
| 203 | action pop_mpls_if_present() { |
| 204 | hdr.mpls.setInvalid(); |
| 205 | // Assuming there's an IP header after the MPLS one. |
Daniele Moro | 5a2de71 | 2019-09-24 14:34:07 -0700 | [diff] [blame] | 206 | hdr.eth_type.value = fabric_metadata.ip_eth_type; |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 207 | } |
| 208 | |
| 209 | @hidden |
| 210 | action set_mpls() { |
| 211 | hdr.mpls.setValid(); |
| 212 | hdr.mpls.label = fabric_metadata.mpls_label; |
| 213 | hdr.mpls.tc = 3w0; |
| 214 | hdr.mpls.bos = 1w1; // BOS = TRUE |
| 215 | hdr.mpls.ttl = fabric_metadata.mpls_ttl; // Decrement after push. |
Daniele Moro | 5a2de71 | 2019-09-24 14:34:07 -0700 | [diff] [blame] | 216 | hdr.eth_type.value = ETHERTYPE_MPLS; |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 217 | } |
| 218 | |
| 219 | @hidden |
pierventre | 48e7882 | 2020-12-15 17:34:54 +0100 | [diff] [blame] | 220 | action push_outer_vlan() { |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 221 | // If VLAN is already valid, we overwrite it with a potentially new VLAN |
| 222 | // ID, and same CFI, PRI, and eth_type values found in ingress. |
| 223 | hdr.vlan_tag.setValid(); |
| 224 | hdr.vlan_tag.cfi = fabric_metadata.vlan_cfi; |
| 225 | hdr.vlan_tag.pri = fabric_metadata.vlan_pri; |
Daniele Moro | 5a2de71 | 2019-09-24 14:34:07 -0700 | [diff] [blame] | 226 | hdr.vlan_tag.eth_type = ETHERTYPE_VLAN; |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 227 | hdr.vlan_tag.vlan_id = fabric_metadata.vlan_id; |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 228 | } |
Yi Tseng | 20f9e7b | 2018-05-24 23:27:39 +0800 | [diff] [blame] | 229 | |
Daniele Moro | 7c3a002 | 2019-07-12 13:38:34 -0700 | [diff] [blame] | 230 | #ifdef WITH_DOUBLE_VLAN_TERMINATION |
| 231 | @hidden |
| 232 | action push_inner_vlan() { |
Daniele Moro | 5a2de71 | 2019-09-24 14:34:07 -0700 | [diff] [blame] | 233 | // Push inner VLAN TAG, rewriting correclty the outer vlan eth_type |
Daniele Moro | 7c3a002 | 2019-07-12 13:38:34 -0700 | [diff] [blame] | 234 | hdr.inner_vlan_tag.setValid(); |
| 235 | hdr.inner_vlan_tag.cfi = fabric_metadata.inner_vlan_cfi; |
| 236 | hdr.inner_vlan_tag.pri = fabric_metadata.inner_vlan_pri; |
| 237 | hdr.inner_vlan_tag.vlan_id = fabric_metadata.inner_vlan_id; |
Daniele Moro | 5a2de71 | 2019-09-24 14:34:07 -0700 | [diff] [blame] | 238 | hdr.inner_vlan_tag.eth_type = ETHERTYPE_VLAN; |
Daniele Moro | 7c3a002 | 2019-07-12 13:38:34 -0700 | [diff] [blame] | 239 | hdr.vlan_tag.eth_type = ETHERTYPE_VLAN; |
| 240 | } |
| 241 | #endif // WITH_DOUBLE_VLAN_TERMINATION |
| 242 | |
Yi Tseng | 47eac89 | 2018-07-11 02:17:04 +0800 | [diff] [blame] | 243 | /* |
| 244 | * Egress VLAN Table. |
pierventre | 48e7882 | 2020-12-15 17:34:54 +0100 | [diff] [blame] | 245 | * Pushes or Pops the VLAN tag if the pair egress port and VLAN ID is matched. |
| 246 | * Instead, it drops the packets on miss. |
Yi Tseng | 47eac89 | 2018-07-11 02:17:04 +0800 | [diff] [blame] | 247 | */ |
| 248 | direct_counter(CounterType.packets_and_bytes) egress_vlan_counter; |
| 249 | |
pierventre | 48e7882 | 2020-12-15 17:34:54 +0100 | [diff] [blame] | 250 | action push_vlan() { |
| 251 | push_outer_vlan(); |
| 252 | egress_vlan_counter.count(); |
| 253 | } |
| 254 | |
Yi Tseng | 20f9e7b | 2018-05-24 23:27:39 +0800 | [diff] [blame] | 255 | action pop_vlan() { |
Yi Tseng | 20f9e7b | 2018-05-24 23:27:39 +0800 | [diff] [blame] | 256 | hdr.vlan_tag.setInvalid(); |
Yi Tseng | 47eac89 | 2018-07-11 02:17:04 +0800 | [diff] [blame] | 257 | egress_vlan_counter.count(); |
Yi Tseng | 20f9e7b | 2018-05-24 23:27:39 +0800 | [diff] [blame] | 258 | } |
| 259 | |
pierventre | 48e7882 | 2020-12-15 17:34:54 +0100 | [diff] [blame] | 260 | action drop() { |
| 261 | mark_to_drop(standard_metadata); |
| 262 | egress_vlan_counter.count(); |
| 263 | } |
| 264 | |
Yi Tseng | 20f9e7b | 2018-05-24 23:27:39 +0800 | [diff] [blame] | 265 | table egress_vlan { |
| 266 | key = { |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 267 | fabric_metadata.vlan_id: exact @name("vlan_id"); |
| 268 | standard_metadata.egress_port: exact @name("eg_port"); |
Yi Tseng | 20f9e7b | 2018-05-24 23:27:39 +0800 | [diff] [blame] | 269 | } |
| 270 | actions = { |
pierventre | 48e7882 | 2020-12-15 17:34:54 +0100 | [diff] [blame] | 271 | push_vlan; |
Yi Tseng | 20f9e7b | 2018-05-24 23:27:39 +0800 | [diff] [blame] | 272 | pop_vlan; |
pierventre | 48e7882 | 2020-12-15 17:34:54 +0100 | [diff] [blame] | 273 | @defaultonly drop; |
Yi Tseng | 20f9e7b | 2018-05-24 23:27:39 +0800 | [diff] [blame] | 274 | } |
pierventre | 48e7882 | 2020-12-15 17:34:54 +0100 | [diff] [blame] | 275 | const default_action = drop(); |
Yi Tseng | 47eac89 | 2018-07-11 02:17:04 +0800 | [diff] [blame] | 276 | counters = egress_vlan_counter; |
Carmelo Cascone | 70e816b | 2019-03-19 16:15:47 -0700 | [diff] [blame] | 277 | size = EGRESS_VLAN_TABLE_SIZE; |
Yi Tseng | 20f9e7b | 2018-05-24 23:27:39 +0800 | [diff] [blame] | 278 | } |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 279 | |
| 280 | apply { |
Carmelo Cascone | 1e8843f | 2018-07-19 19:01:12 +0200 | [diff] [blame] | 281 | if (fabric_metadata.is_multicast == _TRUE |
Carmelo Cascone | a5400af | 2018-07-17 22:11:54 +0200 | [diff] [blame] | 282 | && standard_metadata.ingress_port == standard_metadata.egress_port) { |
Carmelo Cascone | 9b607da | 2019-05-08 14:03:01 -0700 | [diff] [blame] | 283 | mark_to_drop(standard_metadata); |
Carmelo Cascone | a5400af | 2018-07-17 22:11:54 +0200 | [diff] [blame] | 284 | } |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 285 | |
| 286 | if (fabric_metadata.mpls_label == 0) { |
| 287 | if (hdr.mpls.isValid()) pop_mpls_if_present(); |
| 288 | } else { |
| 289 | set_mpls(); |
| 290 | } |
| 291 | |
Daniele Moro | 7c3a002 | 2019-07-12 13:38:34 -0700 | [diff] [blame] | 292 | #ifdef WITH_DOUBLE_VLAN_TERMINATION |
| 293 | if (fabric_metadata.push_double_vlan == _TRUE) { |
| 294 | // Double VLAN termination. |
pierventre | 48e7882 | 2020-12-15 17:34:54 +0100 | [diff] [blame] | 295 | push_outer_vlan(); |
Daniele Moro | 7c3a002 | 2019-07-12 13:38:34 -0700 | [diff] [blame] | 296 | push_inner_vlan(); |
| 297 | } else { |
| 298 | // If no push double vlan, inner_vlan_tag must be popped |
| 299 | hdr.inner_vlan_tag.setInvalid(); |
| 300 | #endif // WITH_DOUBLE_VLAN_TERMINATION |
pierventre | 48e7882 | 2020-12-15 17:34:54 +0100 | [diff] [blame] | 301 | // Port-based VLAN tagging; if there is no match drop the packet! |
| 302 | egress_vlan.apply(); |
Daniele Moro | 7c3a002 | 2019-07-12 13:38:34 -0700 | [diff] [blame] | 303 | #ifdef WITH_DOUBLE_VLAN_TERMINATION |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 304 | } |
Daniele Moro | 7c3a002 | 2019-07-12 13:38:34 -0700 | [diff] [blame] | 305 | #endif // WITH_DOUBLE_VLAN_TERMINATION |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 306 | |
| 307 | // TTL decrement and check. |
| 308 | if (hdr.mpls.isValid()) { |
| 309 | hdr.mpls.ttl = hdr.mpls.ttl - 1; |
Carmelo Cascone | 9b607da | 2019-05-08 14:03:01 -0700 | [diff] [blame] | 310 | if (hdr.mpls.ttl == 0) mark_to_drop(standard_metadata); |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 311 | } else { |
Charles Chan | 74ad51e | 2020-09-12 19:05:42 -0700 | [diff] [blame] | 312 | if(hdr.ipv4.isValid() && fabric_metadata.fwd_type != FWD_BRIDGING) { |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 313 | hdr.ipv4.ttl = hdr.ipv4.ttl - 1; |
Carmelo Cascone | 9b607da | 2019-05-08 14:03:01 -0700 | [diff] [blame] | 314 | if (hdr.ipv4.ttl == 0) mark_to_drop(standard_metadata); |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 315 | } |
| 316 | #ifdef WITH_IPV6 |
Charles Chan | 74ad51e | 2020-09-12 19:05:42 -0700 | [diff] [blame] | 317 | else if (hdr.ipv6.isValid() && fabric_metadata.fwd_type != FWD_BRIDGING) { |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 318 | hdr.ipv6.hop_limit = hdr.ipv6.hop_limit - 1; |
Carmelo Cascone | 9b607da | 2019-05-08 14:03:01 -0700 | [diff] [blame] | 319 | if (hdr.ipv6.hop_limit == 0) mark_to_drop(standard_metadata); |
Carmelo Cascone | b5324e7 | 2018-11-25 02:26:32 -0800 | [diff] [blame] | 320 | } |
| 321 | #endif // WITH_IPV6 |
| 322 | } |
Yi Tseng | be34205 | 2017-11-03 10:21:23 -0700 | [diff] [blame] | 323 | } |
| 324 | } |