Update documentation for Linux networking V3

Signed-off-by: nupuruttarwar <[email protected]>
ipdk-io · Apr 4, 2024 · 8301854 · 8301854
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diff --git a/docs/apps/lnw/es2k/es2k-linux-networking.md b/docs/apps/lnw/es2k/es2k-linux-networking.md
@@ -290,9 +290,20 @@ Current Linux Networking support for the networking recipe has the following lim
 - Only OvS bridges are supported.
 - Configure p4rt-ctl runtime rules before OvS configuration.
 - Double vlan tag is NOT supported.
+- Source port value used in P4RT rules should be VSI ID + 16
+- Delete the route if added manually using `ip route` command
+- Bring the port down or remove the IP address before removing the port from OVS bridge or deleting the bridge.
 - Add all ACC PR's to VSI group 1.
 - On ACC, firewall needs to be disabled. Otherwise, this service will block encapsulated packets.
   - systemctl stop firewalld
 - LAG and ECMP are mutually exclusive. Both can't co-exist in the system configuration at the same time.
 - LAG configuration done via bonding driver is supported.
 - The supported modes are active-backup and active-active with 802.3ad (LACP).
+
+## Additional limitations for Linux Networking V3
+
+- After tearing the setup, it's possible that entries are present in `vm_src_ip4_mac_map_table` and
+  `vm_dst_ip4_mac_map_table` since entries in these tables are learnt from OVS flows in MAC learning phase
+  and OVS might not issue a callback to delete these unless aging happens. Delete these enties using
+  `p4rt-ctl del-entry` command
+- IPv6 is not supported
diff --git a/docs/apps/lnw/es2k/es2k-lnw-overlay-vms.md b/docs/apps/lnw/es2k/es2k-lnw-overlay-vms.md
@@ -31,21 +31,33 @@ for more details on this feature.
 
 Prerequisites:
 
-- Download `hw-p4-programs` TAR file specific to the build and extract it to get `fxp-net_linux-networking-v2` p4 artifacts. Go through `Limitations` specified in `README` and bringup the setup accordingly.
-- Follow steps mentioned in [Deploying P4 Programs for E2100](/guides/es2k/deploying-p4-programs) for bringing up IPU with a custom P4 package.
+- For Linux Networking V2
+  - Download `hw-p4-programs` TAR file specific to the build and extract it to get `fxp-net_linux-networking-v2` P4 artifacts. Go through `Limitations` specified in `README` and bring up the config accordingly.
+  - Follow steps mentioned in [Deploying P4 Programs for E2100](/guides/es2k/deploying-p4-programs) for bringing up IPU with a custom P4 package.
 Modify `load_custom_pkg.sh` with following parameters for linux_networking package:
 
-```text
-    sed -i 's/sem_num_pages = 1;/sem_num_pages = 25;/g' $CP_INIT_CFG
-    sed -i 's/lem_num_pages = 1;/lem_num_pages = 10;/g' $CP_INIT_CFG
-    sed -i 's/acc_apf = 4;/acc_apf = 16;/g' $CP_INIT_CFG
+    ```text
+       sed -i 's/sem_num_pages = 1;/sem_num_pages = 25;/g' $CP_INIT_CFG
+       sed -i 's/lem_num_pages = 1;/lem_num_pages = 10;/g' $CP_INIT_CFG
+       sed -i 's/acc_apf = 4;/acc_apf = 16;/g' $CP_INIT_CFG
+    ```
 
-```
+- For Linux Networking V3
+  - Download `hw-p4-programs` TAR file specific to the build and extract it to get `fxp-net_linux-networking-v3` P4 artifacts. Go through `Limitations` specified in `README` and bring up the config accordingly.
+  - Follow steps mentioned in [Deploying P4 Programs for E2100](/guides/es2k/deploying-p4-programs) for bringing up IPU with a custom P4 package.
+Modify `load_custom_pkg.sh` with following parameters for linux_networking package:
+
+     ```text
+        sed -i 's/sem_num_pages = 1;/sem_num_pages = 28;/g' $CP_INIT_CFG
+        sed -i 's/lem_num_pages = 1;/lem_num_pages = 10;/g' $CP_INIT_CFG
+        sed -i 's/mod_num_pages = 1;/mod_num_pages = 2;/g' $CP_INIT_CFG
+        sed -i 's/acc_apf = 4;/acc_apf = 16;/g' $CP_INIT_CFG
+     ```
 
 - Download `IPU_Documentation` TAR file specific to the build and refer to `Getting Started Guide` on how to install compatible `IDPF driver` on host. Once an IDPF driver is installed, bring up SRIOV VF by modifying the `sriov_numvfs` file present under one of the IDPF network devices. Example as below
 
   ```bash
-  echo 16 > /sys/class/net/ens802f0/device/sriov_numvfs
+  echo 8 > /sys/class/net/ens802f0/device/sriov_numvfs
   ```
 
 Notes about topology:
@@ -67,7 +79,11 @@ System under test will have above topology running the networking recipe. Link P
 
 ## Creating the topology
 
-Follow steps mentioned in [Running Infrap4d on Intel E2100](/guides/es2k/running-infrap4d.md) for starting `infrap4d` process and creating protobuf binary for `fxp-net_linux-networking-v2` p4 program.
+- For Linux Networking V2
+  Follow steps mentioned in [Running Infrap4d on Intel E2100](/guides/es2k/running-infrap4d.md) for starting `infrap4d` process and creating protobuf binary for `fxp-net_linux-networking-v2` P4 program.
+
+- For Linux Networking V3
+  Follow steps mentioned in [Running Infrap4d on Intel E2100](/guides/es2k/running-infrap4d.md) for starting `infrap4d` process and creating protobuf binary for `fxp-net_linux-networking-v3` P4 program.
 
 ### Port Mapping
 
@@ -106,13 +122,22 @@ These VSI values can be checked with `/usr/bin/cli_client -q -c` command on IMC.
 Once the application is started, set the forwarding pipeline config using
 P4Runtime Client `p4rt-ctl` set-pipe command
 
-```bash
-$P4CP_INSTALL/bin/p4rt-ctl set-pipe br0 $OUTPUT_DIR/fxp-net_linux-networking-v2.pb.bin \
-    $OUTPUT_DIR/p4info.txt
-```
+- For Linux Networking V2
 
-Note: Assuming `fxp-net_linux-networking-v2.pb.bin` and `p4info.txt`
-along with other P4 artifacts are created as per the steps mentioned in the previous section.
+  ```bash
+     $P4CP_INSTALL/bin/p4rt-ctl set-pipe br0 $OUTPUT_DIR/fxp-net_linux-networking-v2.pb.bin \
+     $OUTPUT_DIR/p4info.txt
+  ```
+
+- For Linux Networking V3
+
+  ```bash
+     $P4CP_INSTALL/bin/p4rt-ctl set-pipe br0 $OUTPUT_DIR/fxp-net_linux-networking-v3.pb.bin \
+     $OUTPUT_DIR/p4info.txt
+  ```
+
+Note: Assuming `pb.bin` and `p4info.txt` along with other P4 artifacts are created as per
+the steps mentioned in the previous section.
 
 ### Configure VSI Group and add a netdev
 
@@ -205,12 +230,25 @@ Example:
 - Corresponding port representor VSI value 9
 - If a VSI is used as an action, add an offset of 16 to the VSI value
 
-```bash
-# Create a source port for an overlay VF (VSI-27). Source port action can be any value.
-# For simplicity add 16 to VSI ID.
- p4rt-ctl add-entry br0 linux_networking_control.tx_source_port_v4 \
-     "vmeta.common.vsi=27,zero_padding=0,action=linux_networking_control.set_source_port(43)"
+- For Linux Networking V2
+
+  ```bash
+     # Create a source port for an overlay VF (VSI-27). Source port value should be VSI ID + 16.
+      p4rt-ctl add-entry br0 linux_networking_control.tx_source_port_v4 \
+      "vmeta.common.vsi=27,zero_padding=0,action=linux_networking_control.set_source_port(43)"
+   ```
 
+- For Linux Networking V3
+
+  ```bash
+     # Create a source port for an overlay VF (VSI-27). Source port value should be VSI ID + 16.
+      p4rt-ctl add-entry br0 linux_networking_control.tx_source_port_v4 \
+      "vmeta.common.vsi=27/2047,action=linux_networking_control.set_source_port(43)"
+   ```
+
+- Common P4RT rules
+
+```bash
 # Create a mapping between overlay VF (VSI-27/source port-43) and ACC port representor (VSI-9)
  p4rt-ctl add-entry br0 linux_networking_control.source_port_to_pr_map \
      "user_meta.cmeta.source_port=43,zero_padding=0,action=linux_networking_control.fwd_to_vsi(25)"
@@ -240,7 +278,7 @@ Example:
 - If a VSI is used as an action, add an offset of 16 to the VSI value
 
 ```bash
-# Create a source port for a physical port (Phy port-0). Source port action can be any value.
+# Create a source port for a physical port (Phy port-0). Source port value should be VSI ID + 16.
 # For simplicity consider the same value as phy port id.
  p4rt-ctl add-entry br0 linux_networking_control.rx_source_port \
      "vmeta.common.port_id=0,zero_padding=0,action=linux_networking_control.set_source_port(0)"
@@ -268,14 +306,26 @@ Example:
 - Corresponding port representor VSI value 18
 - If a VSI is used as an action, add an offset of 16 to the VSI value
 
-```bash
-# Create a source port for an overlay VF (VSI-24). Source port action can be any value.
-# For simplicity add 16 to VSI ID.
- p4rt-ctl add-entry br0 linux_networking_control.tx_source_port_v4 \
-     "vmeta.common.vsi=24,zero_padding=0,action=linux_networking_control.set_source_port(40)"
+- For Linux Networking V2
+
+  ```bash
+     # Create a source port for an APF netdev (VSI-24). Source port value should be VSI ID + 16.
+      p4rt-ctl add-entry br0 linux_networking_control.tx_source_port_v4 \
+      "vmeta.common.vsi=24,zero_padding=0,action=linux_networking_control.set_source_port(40)"
+   ```
+
+- For Linux Networking V3
+
+  ```bash
+     # Create a source port for an APF netdev (VSI-24). Source port value should be VSI ID + 16.
+      p4rt-ctl add-entry br0 linux_networking_control.tx_source_port_v4 \
+      "vmeta.common.vsi=24/2047,action=linux_networking_control.set_source_port(40)"
+   ```
 
+- Common P4RT rules
 
-# Create a mapping between overlay VF (VSI-24/source port-40) and ACC port representor (VSI-18)
+```bash
+# Create a mapping between APF netdev (VSI-24/source port-40) and ACC port representor (VSI-18)
  p4rt-ctl add-entry br0 linux_networking_control.source_port_to_pr_map \
      "user_meta.cmeta.source_port=40,zero_padding=0,action=linux_networking_control.fwd_to_vsi(34)"
 
@@ -301,31 +351,61 @@ For TCAM entry configure LPM LUT table
 
 Create a dummy LAG bypass table for all 8 hash indexes
 
-```bash
- p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
-     "user_meta.cmeta.lag_group_id=0,hash=0,action=linux_networking_control.bypass"
+- For Linux Networking V2
 
- p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
-     "user_meta.cmeta.lag_group_id=0,hash=1,action=linux_networking_control.bypass"
+  ```bash
+     p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
+      "user_meta.cmeta.lag_group_id=0,hash=0,action=linux_networking_control.bypass"
 
- p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
-     "user_meta.cmeta.lag_group_id=0,hash=2,action=linux_networking_control.bypass"
+     p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
+      "user_meta.cmeta.lag_group_id=0,hash=1,action=linux_networking_control.bypass"
 
- p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
-     "user_meta.cmeta.lag_group_id=0,hash=3,action=linux_networking_control.bypass"
+     p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
+      "user_meta.cmeta.lag_group_id=0,hash=2,action=linux_networking_control.bypass"
 
- p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
-     "user_meta.cmeta.lag_group_id=0,hash=4,action=linux_networking_control.bypass"
+     p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
+      "user_meta.cmeta.lag_group_id=0,hash=3,action=linux_networking_control.bypass"
 
- p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
-     "user_meta.cmeta.lag_group_id=0,hash=5,action=linux_networking_control.bypass"
+     p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
+      "user_meta.cmeta.lag_group_id=0,hash=4,action=linux_networking_control.bypass"
 
- p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
-     "user_meta.cmeta.lag_group_id=0,hash=6,action=linux_networking_control.bypass"
+     p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
+      "user_meta.cmeta.lag_group_id=0,hash=5,action=linux_networking_control.bypass"
 
- p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
-     "user_meta.cmeta.lag_group_id=0,hash=7,action=linux_networking_control.bypass"
-```
+     p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
+      "user_meta.cmeta.lag_group_id=0,hash=6,action=linux_networking_control.bypass"
+
+     p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
+      "user_meta.cmeta.lag_group_id=0,hash=7,action=linux_networking_control.bypass"
+   ```
+
+- For Linux Networking V3
+
+  ```bash
+     p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
+      "user_meta.cmeta.lag_group_id=0/255,hash=0/7,action=linux_networking_control.bypass"
+
+     p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
+      "user_meta.cmeta.lag_group_id=0/255,hash=1/7,action=linux_networking_control.bypass"
+
+     p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
+      "user_meta.cmeta.lag_group_id=0/255,hash=2/7,action=linux_networking_control.bypass"
+
+     p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
+      "user_meta.cmeta.lag_group_id=0/255,hash=3/7,action=linux_networking_control.bypass"
+
+     p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
+      "user_meta.cmeta.lag_group_id=0/255,hash=4/7,action=linux_networking_control.bypass"
+
+     p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
+      "user_meta.cmeta.lag_group_id=0/255,hash=5/7,action=linux_networking_control.bypass"
+
+     p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
+      "user_meta.cmeta.lag_group_id=0/255,hash=6/7,action=linux_networking_control.bypass"
+
+     p4rt-ctl add-entry br0  linux_networking_control.tx_lag_table \
+      "user_meta.cmeta.lag_group_id=0/255,hash=7/7,action=linux_networking_control.bypass"
+   ```
 
 ### Create integration bridge and add ports to the bridge