Commit Graph

6 Commits

Author SHA1 Message Date
David C Somayajulu
45f1312387 Performance enhancements to reduce CPU utililization for large number of
TCP connections (order of tens of thousands), with predominantly Transmits.

Choice to perform receive operations either in IThread or Taskqueue Thread.

Submitted by:Vaishali.Kulkarni@cavium.com
MFC after:5 days
2017-08-11 17:43:25 +00:00
David C Somayajulu
b284b46dc4 Provide compile to choose receive processing in either Ithread or Taskqueue Thread. 2017-08-09 22:18:49 +00:00
Ryan Libby
d576ccdf01 qlnx: gcc build errors
Propagate warning flags from kern.opts.mk and then fix minor -Werror
issues when building with gcc from -Wredundant-decls, -Wnested-externs,
-Wuninitialized.

Reviewed by:	davidcs
Approved by:	markj (mentor)
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D11413
2017-07-18 06:15:05 +00:00
David C Somayajulu
77388ed2f3 1. Move Rx Processing to fp_taskqueue(). With this CPU utilization for processing interrupts drops to around 1% for 100G and under 1% for other speeds.
2. Use sysctls for TRACE_LRO_CNT and TRACE_TSO_PKT_LEN
3. remove unused mtx tx_lock
4. bind taskqueue kernel thread to the appropriate cpu core
5. when tx_ring is full, stop further transmits till at least 1/16th of the Tx Ring is empty. In our case 1K entries. Also if there are rx_pkts to process, put the taskqueue thread to sleep for 100ms, before enabling interrupts.
6. Use rx_pkt_threshold of 128.

MFC after:3 days
2017-05-16 21:34:40 +00:00
Hans Petter Selasky
c9dd0b48c9 Cleanup the bitmap_xxx() functions in the LinuxKPI:
- Move all bitmap related functions from bitops.h to bitmap.h, similar
  to what Linux does.

- Apply some minor code cleanup and simplifications to optimize the
  generated code when using static inline functions.

- Implement the following list of bitmap functions which are needed by
  drm-next and ibcore:
  - bitmap_find_next_zero_area_off()
  - bitmap_find_next_zero_area()
  - bitmap_or()
  - bitmap_and()
  - bitmap_xor()

- Add missing include directives to the qlnxe driver
  (davidcs@ has been notified)

MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-04-06 13:30:31 +00:00
David C Somayajulu
11e25f0da3 Add 25/40/100Gigabit Ethernet Driver version v1.3.0 for Cavium Inc's.
Qlogic 45000 Series Adapters

MFC after:2 weeks
2017-04-04 06:16:59 +00:00