diff options
| author | Jakub Kicinski <jakub.kicinski@netronome.com> | 2017-05-28 17:53:03 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-05-30 11:27:07 -0400 |
| commit | 770f0cea19510098cb01ac87370e800b53a6bf5d (patch) | |
| tree | b2aa23abefb21491fcf779fe942ce0abc7b86bd2 /drivers/net/ethernet/netronome/nfp | |
| parent | 193d6218ba801c88a5f3ef1bb2357e39074b3cdc (diff) | |
nfp: don't add ring size to index calculations
Adding ring size to index calculation is pointless, since index
will be masked with ring size - 1.
Suggested-by: David Laight <David.Laight@ACULAB.COM>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/nfp_net_common.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c index 9312a737fbc9..68013d048e9d 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c @@ -928,7 +928,7 @@ static void nfp_net_tx_complete(struct nfp_net_tx_ring *tx_ring) if (qcp_rd_p == tx_ring->qcp_rd_p) return; - todo = D_IDX(tx_ring, qcp_rd_p + tx_ring->cnt - tx_ring->qcp_rd_p); + todo = D_IDX(tx_ring, qcp_rd_p - tx_ring->qcp_rd_p); while (todo--) { idx = D_IDX(tx_ring, tx_ring->rd_p++); @@ -999,7 +999,7 @@ static bool nfp_net_xdp_complete(struct nfp_net_tx_ring *tx_ring) if (qcp_rd_p == tx_ring->qcp_rd_p) return true; - todo = D_IDX(tx_ring, qcp_rd_p + tx_ring->cnt - tx_ring->qcp_rd_p); + todo = D_IDX(tx_ring, qcp_rd_p - tx_ring->qcp_rd_p); done_all = todo <= NFP_NET_XDP_MAX_COMPLETE; todo = min(todo, NFP_NET_XDP_MAX_COMPLETE); |