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net/sfc: relax SW packets/bytes atomic ops memory ordering

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No barriers are required when stats are incremented or read.

Fixes: 96fd2bd69b58 ("net/sfc: support flow action count in transfer rules")
Cc: stable@dpdk.org

Signed-off-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
This commit is contained in:
Andrew Rybchenko 2021-09-17 14:15:14 +03:00 committed by Ferruh Yigit
parent dc954ae73a
commit 34f92e82dd
1 changed files with 2 additions and 2 deletions
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4
drivers/net/sfc/sfc_stats.h
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@ -53,7 +53,7 @@ sfc_pkts_bytes_add(union sfc_pkts_bytes *st, uint64_t pkts, uint64_t bytes)
* core sees both counter updates together.
*/
__atomic_store_n(&st->pkts_bytes.int128, result.pkts_bytes.int128,
__ATOMIC_RELEASE);
__ATOMIC_RELAXED);
#else
st->pkts += pkts;
st->bytes += bytes;
@ -68,7 +68,7 @@ sfc_pkts_bytes_get(const union sfc_pkts_bytes *st, union sfc_pkts_bytes *result)
{
#if SFC_SW_STATS_ATOMIC
result->pkts_bytes.int128 = __atomic_load_n(&st->pkts_bytes.int128,
__ATOMIC_ACQUIRE);
__ATOMIC_RELAXED);
#else
*result = *st;
#endif