[v2,05/16] net/af_xdp: use previous value atomic fetch operations
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Commit Message
Use __atomic_fetch_{add,and,or,sub,xor} instead of
__atomic_{add,and,or,sub,xor}_fetch adding the necessary code to
allow consumption of the resulting value.
Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
---
drivers/net/af_xdp/rte_eth_af_xdp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
@@ -979,7 +979,7 @@ static int link_xdp_prog_with_dev(int ifindex, int fd, __u32 flags)
break;
xsk_socket__delete(rxq->xsk);
- if (__atomic_sub_fetch(&rxq->umem->refcnt, 1, __ATOMIC_ACQUIRE)
+ if (__atomic_fetch_sub(&rxq->umem->refcnt, 1, __ATOMIC_ACQUIRE) - 1
== 0) {
(void)xsk_umem__delete(rxq->umem->umem);
xdp_umem_destroy(rxq->umem);
@@ -1710,7 +1710,7 @@ struct msg_internal {
out_xsk:
xsk_socket__delete(rxq->xsk);
out_umem:
- if (__atomic_sub_fetch(&rxq->umem->refcnt, 1, __ATOMIC_ACQUIRE) == 0)
+ if (__atomic_fetch_sub(&rxq->umem->refcnt, 1, __ATOMIC_ACQUIRE) - 1 == 0)
xdp_umem_destroy(rxq->umem);
return ret;