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 two counters (current and offset) to implement
SMP safe reset on 64 bit platforms; this avoids having to do locked
operation in the fast path. On 32 bit platforms, the compiler
will split access to 64 bit variables by default; therefore
it has to use std atomic.
By using common code, it also fixes missing counts in several drivers.
And fixes several bugs.
v8 - use counter and offset (based on mailing list discussion) to avoid
having to locked operation on x86 64.
Stephen Hemminger (8):
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
net/ring: use generic SW stats
net/tap: use generic SW stats
net/null: use generic SW stats
drivers/net/af_packet/rte_eth_af_packet.c | 78 +++--------
drivers/net/af_xdp/rte_eth_af_xdp.c | 85 ++++--------
drivers/net/null/rte_eth_null.c | 83 +++---------
drivers/net/pcap/pcap_ethdev.c | 100 ++++-----------
drivers/net/ring/rte_eth_ring.c | 63 +++------
drivers/net/tap/rte_eth_tap.c | 75 ++---------
drivers/net/tap/rte_eth_tap.h | 15 +--
lib/eal/include/meson.build | 1 +
lib/eal/include/rte_counter.h | 150 ++++++++++++++++++++++
lib/ethdev/ethdev_swstats.c | 101 +++++++++++++++
lib/ethdev/ethdev_swstats.h | 111 ++++++++++++++++
lib/ethdev/meson.build | 2 +
lib/ethdev/version.map | 3 +
13 files changed, 486 insertions(+), 381 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
