Add DPDK SWX based P4 backend stratum-dpdk

[pudelkoM]

Compile DPDK

./stratum/hal/lib/dpdk/build-dpdk-install-docker.sh
tar xf dpdk-install.tar.xz
set -Ux DPDK_INSTALL (realpath ./dpdk-install)

Running SWX pipeline from DPDK example code

bazel build //stratum/hal/bin/dpdk:stratum_dpdk_deb
sudo apt-get install --reinstall ./stratum_dpdk_deb.deb
sudo start-stratum.sh

Logs:

EAL: Detected CPU lcores: 96
EAL: Detected NUMA nodes: 2
EAL: Detected shared linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: No available 1048576 kB hugepages reported
EAL: VFIO support initialized
EAL: Probe PCI driver: net_i40e (8086:1583) device: 0000:3b:00.0 (socket 0)
EAL: Probe PCI driver: net_i40e (8086:1583) device: 0000:3b:00.1 (socket 0)
EAL: Probe PCI driver: net_i40e (8086:1583) device: 0000:5e:00.0 (socket 0)
EAL: Probe PCI driver: net_i40e (8086:1583) device: 0000:5e:00.1 (socket 0)
EAL: Probe PCI driver: net_i40e (8086:1583) device: 0000:af:00.0 (socket 1)
EAL: Probe PCI driver: net_i40e (8086:1583) device: 0000:af:00.1 (socket 1)
TELEMETRY: No legacy callbacks, legacy socket not created
; SPDX-License-Identifier: BSD-3-Clause
; Copyright(c) 2020 Intel Corporation

mempool MEMPOOL0 buffer 2304 pool 32K cache 256 cpu 0

link LINK0 dev 0000:af:00.0 rxq 1 128 MEMPOOL0 txq 1 512 promiscuous on
link LINK1 dev 0000:af:00.1 rxq 1 128 MEMPOOL0 txq 1 512 promiscuous on
link LINK2 dev 0000:5e:00.0 rxq 1 128 MEMPOOL0 txq 1 512 promiscuous on
link LINK3 dev 0000:5e:00.1 rxq 1 128 MEMPOOL0 txq 1 512 promiscuous on

pipeline PIPELINE0 create 0

pipeline PIPELINE0 port in 0 link LINK0 rxq 0 bsz 32
pipeline PIPELINE0 port in 1 link LINK1 rxq 0 bsz 32
pipeline PIPELINE0 port in 2 link LINK2 rxq 0 bsz 32
pipeline PIPELINE0 port in 3 link LINK3 rxq 0 bsz 32

pipeline PIPELINE0 port out 0 link LINK0 txq 0 bsz 32
pipeline PIPELINE0 port out 1 link LINK1 txq 0 bsz 32
pipeline PIPELINE0 port out 2 link LINK2 txq 0 bsz 32
pipeline PIPELINE0 port out 3 link LINK3 txq 0 bsz 32

pipeline PIPELINE0 build ./stratum/hal/lib/dpdk/l2fwd.spec

thread 1 pipeline PIPELINE0 enable

CLI:

nc 0.0.0.0 8086

pipeline> link show

LINK0: flags=<UP> mtu 8982
	ether AC:1F:6B:FD:83:5E rxqueues 1 txqueues 1
	port# 4  speed 40 Gbps
	RX packets 2  bytes 180
	RX errors 0  missed 0  no-mbuf 0
	TX packets 0  bytes 0
	TX errors 0

LINK1: flags=<UP> mtu 8982
	ether AC:1F:6B:FD:83:5F rxqueues 1 txqueues 1
	port# 5  speed 40 Gbps
	RX packets 2  bytes 180
	RX errors 0  missed 0  no-mbuf 0
	TX packets 0  bytes 0
	TX errors 0

LINK2: flags=<DOWN> mtu 8982
	ether 40:A6:B7:28:B6:00 rxqueues 1 txqueues 1
	port# 2  speed None
	RX packets 0  bytes 0
	RX errors 0  missed 0  no-mbuf 0
	TX packets 0  bytes 0
	TX errors 0

LINK3: flags=<DOWN> mtu 8982
	ether 40:A6:B7:28:B6:01 rxqueues 1 txqueues 1
	port# 3  speed None
	RX packets 0  bytes 0
	RX errors 0  missed 0  no-mbuf 0
	TX packets 0  bytes 0
	TX errors 0

pipeline> pipeline PIPELINE0 stats
Input ports:
	Port 0: packets 2 bytes 180 empty 281162596
	Port 1: packets 2 bytes 180 empty 281162631
	Port 2: packets 0 bytes 0 empty 281162640
	Port 3: packets 0 bytes 0 empty 281162644

Hello world

./stratum/hal/lib/dpdk/build-dpdk-install-docker.sh
tar xf dpdk-install.tar.xz
export $DPDK_INSTALL=...
bazel build //stratum/hal/lib/dpdk:dpdk_hello
<huge pages setup>
sudo ./bazel-bin/stratum/hal/lib/dpdk/dpdk_hello

EAL: Detected CPU lcores: 96
EAL: Detected NUMA nodes: 2
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'VA'
EAL: No available 1048576 kB hugepages reported
EAL: VFIO support initialized
TELEMETRY: No legacy callbacks, legacy socket not created
hello from core 1
hello from core 2
hello from core 3
hello from core 4
hello from core 5
hello from core 6
hello from core 7
hello from core 8
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hello from core 19
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hello from core 22
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hello from core 28
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hello from core 92
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hello from core 89
hello from core 94
hello from core 91
hello from core 93
hello from core 90
hello from core 95
hello from core 0

[codecov]

Codecov Report

Merging #866 (b88ffe6) into main (b1b7836) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #866   +/-   ##
=======================================
  Coverage   78.55%   78.55%           
=======================================
  Files         334      334           
  Lines       30077    30077           
=======================================
  Hits        23628    23628           
  Misses       6449     6449