release candidate 21.05-rc4

A new DPDK release candidate is ready for testing:

	https://git.dpdk.org/dpdk/tag/?id=v21.05-rc4

There are only 48 new patches in this snapshot, meaning this release cycle is almost closed.

Release notes:

	https://doc.dpdk.org/guides/rel_notes/release_21_05.html

Please test and report issues on bugs.dpdk.org. You may share some release validation results by replying to this message at [email protected].

If no issue, DPDK 21.05 should be released at the end of this week.

Please think about sharing your roadmap for DPDK 21.08.

Thank you everyone

All,

Update the test status for Intel part. Till now dpdk21.05-rc4 test is almost finished and no new issue is found.

# Basic Intel(R) NIC testing
* Build or compile:
*Build: cover the build test combination with latest GCC/Clang/ICC version and the popular OS revision such as Ubuntu20.04, CentOS Stream 8, etc.
- All passed.
- Bug about "crypto_zuc build failed on Fedora34 with gcc 11" has been fixed in RC4.
*Compile: cover the CFLAGES(O0/O1/O2/O3) with popular OS such as Ubuntu20.04 and CentOS Stream 8.
- All passed.

* PF(i40e, ixgbe and igb): test scenarios including RTE_FLOW/TSO/Jumboframe/checksum offload/VLAN/VXLAN, etc.
- All tests are done, no new issue is found except known issue.
- 1 bug is reported based on rc1 in bugzilla. Patch has provided but need other patch supports, all of them will be fixed in next release. > * https://bugs.dpdk.org/show_bug.cgi?id=687

* VF(i40e, ixgbe and igb): test scenarios including VF-RTE_FLOW/TSO/Jumboframe/checksum offload/VLAN/VXLAN, etc.
- All tests are done. No new issue is found except known issue.

* PF/VF(ICE): test scenarios including /Switch features/Package Management/Flow Director/Advanced Tx/Advanced RSS/ACL/DCF/Share code update/Flexible Descriptor, etc.
- All tests are done. No new issue is found except known issues.

* Intel NIC single core/NIC performance: test scenarios including PF/VF single core performance test, RFC2544 Zero packet loss performance test, etc.
- Test important part. No new issue is found.

* Power and IPsec:
* Power: test scenarios including bi-direction/Telemetry/Empty Poll Lib/Priority Base Frequency and so on.
- All passed. No new issue is found.
* IPsec: test scenarios including ipsec/ipsec-secgw
- Not tested in RC4. Tested in RC1~RC3, no issue is found.

# Basic cryptodev and virtio testing
* Virtio: both function and performance test are covered. Such as PVP/Virtio_loopback/virtio-user loopback/virtio-net VM2VM perf testing/VMAWARE ESXI 7.0u2, etc.
- All tests are done.
- No new issue is found except known issues which are found in rc2.
- Bug https://bugs.dpdk.org/show_bug.cgi?id=699 has been fixed in RC4.

* Cryptodev:
*Function test: test scenarios including Cryptodev API testing/CompressDev ISA-L/QAT/ZLIB PMD Testing/FIPS, etc.
- All tests are done. No new bug is found except known issue.
*Performance test: test scenarios including Thoughput Performance /Cryptodev Latency, etc.
- All tests are done.

Best regards,
Yu Jiang