Release Notes

PFQ 3.0

• New functional engine embedded within the kernel module.
• eDSL PFQ-lang implemented for both C++11 and Haskell languages.
• Stability improved, random crashes fixed.
• pfq-omatic script improved.

PFQ 3.1

• New lightweight Garbage Collector for sk_buff (GC).
• New experimental functions: (lazy) forward, forwardIO, bridge, tap, tee.
• Added pfq-bridge tool.
• Minor bugs fixed.

PFQ 3.2

• In Q-Lang, support for vectors (of Storable and pod) added.

PFQ 3.3

• Functional argument serialization updated.
• Q-lang experimental functions: vlan_id, vlan_id_filter, steer_field, bloom, bloom_src, bloom_dst, bloom_filter, bloom_src_filter, bloom_dst_filter, bloom_calc_m, bloom_calc_n, bloom_calc_p.
• Simple proc added in /proc/net/pfq.
• Code cleanup and minor bugs fixed.
• Tools and tests updated.

PFQ 3.4

• PFQ daemon released.

PFQ 3.5

• Few bugs and kernel panic fixed.

PFQ 3.6

• Group control access refactoring.
• Policies enhanced by socket ownership.
• BPF extended to newer kernels.

PFQ 3.7

• pfq-load utility added.

PFQ 3.8

• Aggressive polling added to libraries.
• Performance improvements.
• pfq-load utility improved.
• Bug fixes.

PFQ 4.0

• Transparent support of kernel transmission threads.
• Linux Kernel 3.18 xmit_more bit ready.
• New APIs for transmission of packets.
• Shared memory on top of HugePages.
• Switched to LTS 1.0 Haskell (Stackage).
• Accelerated pcap library.
• Bug fixes.

PFQ 4.1

• New SPSC double-buffered variadic Tx queue.
• Active timestamping for transmission.
• Improved performance and stability.
• Various bug fixes.

PFQ 4.2

• Pool of socket buffers improved.

PFQ 4.3

• Possible regression fixed in group policies.
• Internal refactoring of socket groups.
• Miscellaneous improvements.
• Bug fixes.

PFQ 4.4

• Improved stability in packet transmission.
• Bug fixes.

PFQ 5.0

• Steering enhanced through the use of weights.
• General improvements of user-space tools.
• HugePages support enabled by default.
• New binding format for user tools.
• Packet transmission improved.
• API simplified and clean.
• Stats of memory pool improved.
• Support for i40e driver added.
• New declarative syntax for pfqd config.
• Performance improvements.
• Regressions fixed.
• Code cleanup.
• Bugs fixed.

PFQ 5.1

• Monadic state and skb mark enabled for DSL.
• General and performance improvements.
• Bug fixes.

PFQ 5.2

• Transmission APIs updated.
• Transmission performance improvements.
• Bug fixes.

PFQ 6.0

• Experimental pfq-lang compiler released.
• API extended with setGroupComputationFromString, setGroupComputationFromJSON...
• Internal Fanout monad extended with DoubleSteering.
• Pfq-lang: expressions are now JSON serializable.
• Pfq-lang: native CIDR type added.
• Pfq-lang: do notation implemented.
• Pfq-lang: new steering functions:
  • steer_rrobin
  • steer_rss
  • steer_mac
  • steer_p2p
  • double_steer_field
  • double_steer_ip
  • double_steer_mac
  • steer_field_symmetric
  • steer_local_ip
  • steer_local_link
  • detour
• Transmission APIs updated.
• General improvements.
• Regressions and bugs fixes.