[PATCH v7 0/9] Use weak atomic operations for SW PMD counters

[Stephen Hemminger]

Adds common code for collecting basic statistics used by many
SW based PMD's such as af_packet, af_xdp, null, tap and ring.

This version uses std atomic on all platforms. The memory order
is chosen to be the best performance but still providing the
guarantees expected of PMD counters.

By using common code, it also fixes missing counts in several drivers.
And fixes several bugs.

v7 - use stdatomic even on 64 bit. Does cause extra locked operation
     for increment on x86 64 but will be safe.
   - rebase

Stephen Hemminger (9):
  eal: generic 64 bit counter
  ethdev: add common counters for statistics
  net/af_packet: use generic SW stats
  net/af_xdp: use generic SW stats
  net/pcap: use generic SW stats
  test/pmd_ring: initialize mbufs
  net/ring: use generic SW stats
  net/tap: use generic SW stats
  net/null: use generic SW stats

 app/test/test_pmd_ring.c                  |  26 ++++-
 drivers/net/af_packet/rte_eth_af_packet.c |  82 +++-----------
 drivers/net/af_xdp/rte_eth_af_xdp.c       |  97 +++++------------
 drivers/net/null/rte_eth_null.c           |  80 +++-----------
 drivers/net/pcap/pcap_ethdev.c            | 125 +++++-----------------
 drivers/net/ring/rte_eth_ring.c           |  71 +++++-------
 drivers/net/tap/rte_eth_tap.c             |  88 +++------------
 drivers/net/tap/rte_eth_tap.h             |  15 +--
 lib/eal/include/meson.build               |   1 +
 lib/eal/include/rte_counter.h             | 116 ++++++++++++++++++++
 lib/ethdev/ethdev_swstats.c               | 101 +++++++++++++++++
 lib/ethdev/ethdev_swstats.h               | 124 +++++++++++++++++++++
 lib/ethdev/meson.build                    |   2 +
 lib/ethdev/version.map                    |   3 +
 14 files changed, 495 insertions(+), 436 deletions(-)
 create mode 100644 lib/eal/include/rte_counter.h
 create mode 100644 lib/ethdev/ethdev_swstats.c
 create mode 100644 lib/ethdev/ethdev_swstats.h

-- 
2.43.0