net/sfc: support new representor parameter syntax

[dpdk.git] / drivers / net / sfc / sfc_tweak.h

diff --git a/drivers/net/sfc/sfc_tweak.h b/drivers/net/sfc/sfc_tweak.h
index bd3de53..d09c7a3 100644 (file)
--- a/drivers/net/sfc/sfc_tweak.h
+++ b/drivers/net/sfc/sfc_tweak.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: BSD-3-Clause
  *
- * Copyright(c) 2019-2020 Xilinx, Inc.
+ * Copyright(c) 2019-2021 Xilinx, Inc.
  * Copyright(c) 2016-2019 Solarflare Communications Inc.
  *
  * This software was jointly developed between OKTET Labs (under contract
@@ -26,7 +26,7 @@
  * this improves cache locality because the same mbufs may be used to send
  * subsequent bursts in certain cases because of well-timed reap
  */
-#define SFC_TX_XMIT_PKTS_REAP_AT_LEAST_ONCE    0
+#define SFC_TX_XMIT_PKTS_REAP_AT_LEAST_ONCE    1
 
 /** Default free threshold follows recommendations from DPDK documentation */
 #define SFC_TX_DEFAULT_FREE_THRESH     32
@@ -42,4 +42,13 @@
  */
 #define SFC_RXD_WAIT_TIMEOUT_NS_DEF    (200U * 1000)
 
+/**
+ * Ideally reading packet and byte counters together should return
+ * consistent values. I.e. a number of bytes corresponds to a number of
+ * packets. Since counters are updated in one thread and queried in
+ * another it requires either locking or atomics which are very
+ * expensive from performance point of view. So, disable it by default.
+ */
+#define SFC_SW_STATS_ATOMIC            0
+
 #endif /* _SFC_TWEAK_H_ */