The goal is to land every deprecation currently listed in the release
notes by the 26.11 ABI bump. Functions to be removed in 26.11 need
to be marked __rte_deprecated by 26.07, with all in-tree users
converted off them first so CI stays clean.
This is the first step. After this series there are no remaining
in-tree users of rte_atomic64. Expected follow-ups:
- convert remaining rte_atomic32 users (dpaa/fslmc, netvsc, vmbus,
sw_evdev, txgbe, ifc, hinic, bnx2x, vhost)
- convert remaining rte_atomic16 users (dpaa/fslmc, qman)
- mark the rte_atomicNN_*() family __rte_deprecated
- remove the legacy test_atomic.c
- remove the API itself at 26.11
Patch 1 deletes the inline-asm atomic fallbacks across arm, ppc,
loongarch, riscv, and x86 now that RTE_FORCE_INTRINSICS has been
the default everywhere for years. Largest patch by line count and
the one most worth review attention.
Patch 2 retires the rte_smp_*mb deprecation notice (open since 2021)
by reimplementing those APIs as inline wrappers over
rte_atomic_thread_fence; the API is preserved for readability.
Patch 3 is the load-bearing change for lib/: the last caller of
rte_atomic32_cmpset() is converted, with explicit acquire/release
orderings matching the existing HTS/RTS ring pattern.
Driver conversions (patches 4-11) match each rte_atomic64 use to its
best fit rather than blanket seq_cst: software stats become plain
assignment (DPDK convention, torn reads accepted); CAS loops setting
a flag collapse to fetch_or or exchange; open-coded link-status CAS
in net/pfe and net/sfc moves to the existing rte_eth_linkstatus
helpers; genuine synchronization stays atomic with explicit ordering.
v2 - fix clang build
- replace rte_atomic64 in more drivers
- incorporate feedback on rte_smp and ring
- drop zxdh change (only caused by intrinsics in spinlock)
Stephen Hemminger (11):
eal: use intrinsics for rte_atomic on all platforms
eal: reimplement rte_smp_*mb with rte_atomic_thread_fence
ring: use C11 atomic operations for MP/SP head/tail
net/bonding: use stdatomic
net/nbl: remove unused rte_atomic16 field
net/ena: replace use of rte_atomicNN
net/failsafe: convert to stdatomic
net/enic: do not use deprecated rte_atomic64
net/pfe: use ethdev linkstatus helpers
net/sfc: replace rte_atomic with stdatomic
crypto/ccp: replace use of rte_atomic64 with stdatomic
doc/guides/rel_notes/deprecation.rst | 8 -
drivers/crypto/ccp/ccp_crypto.c | 11 +-
drivers/crypto/ccp/ccp_crypto.h | 2 +-
drivers/crypto/ccp/ccp_dev.c | 10 +-
drivers/crypto/ccp/ccp_dev.h | 4 +-
drivers/net/bonding/eth_bond_8023ad_private.h | 6 +-
drivers/net/bonding/rte_eth_bond_8023ad.c | 35 ++-
drivers/net/ena/base/ena_plat_dpdk.h | 14 +-
drivers/net/ena/ena_ethdev.c | 21 +-
drivers/net/ena/ena_ethdev.h | 7 +-
drivers/net/enic/enic.h | 6 +-
drivers/net/enic/enic_compat.h | 1 -
drivers/net/enic/enic_main.c | 17 +-
drivers/net/enic/enic_rxtx.c | 14 +-
drivers/net/enic/enic_rxtx_vec_avx2.c | 4 +-
drivers/net/failsafe/failsafe_ops.c | 12 +-
drivers/net/failsafe/failsafe_private.h | 29 +--
drivers/net/failsafe/failsafe_rxtx.c | 2 +-
drivers/net/nbl/nbl_hw/nbl_resource.h | 1 -
drivers/net/pfe/pfe_ethdev.c | 32 +--
drivers/net/sfc/sfc.c | 9 +-
drivers/net/sfc/sfc.h | 4 +-
drivers/net/sfc/sfc_port.c | 7 +-
drivers/net/sfc/sfc_stats.h | 2 +-
lib/eal/arm/include/rte_atomic_32.h | 10 -
lib/eal/arm/include/rte_atomic_64.h | 10 -
lib/eal/include/generic/rte_atomic.h | 206 +++---------------
lib/eal/loongarch/include/rte_atomic.h | 10 -
lib/eal/ppc/include/rte_atomic.h | 179 ---------------
lib/eal/riscv/include/rte_atomic.h | 10 -
lib/eal/x86/include/rte_atomic.h | 205 +----------------
lib/eal/x86/include/rte_atomic_32.h | 188 ----------------
lib/eal/x86/include/rte_atomic_64.h | 157 -------------
lib/ring/rte_ring_generic_pvt.h | 65 ++++--
34 files changed, 190 insertions(+), 1108 deletions(-)
--
2.53.0
