From 19fcec84d8d7d21e796c7624e521b60d28ee21ed Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:45:59 +0200 Subject: Adding upstream version 16.2.11+ds. Signed-off-by: Daniel Baumann --- src/seastar/dpdk/drivers/net/sfc/sfc_tweak.h | 45 ++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 src/seastar/dpdk/drivers/net/sfc/sfc_tweak.h (limited to 'src/seastar/dpdk/drivers/net/sfc/sfc_tweak.h') diff --git a/src/seastar/dpdk/drivers/net/sfc/sfc_tweak.h b/src/seastar/dpdk/drivers/net/sfc/sfc_tweak.h new file mode 100644 index 000000000..4d543f685 --- /dev/null +++ b/src/seastar/dpdk/drivers/net/sfc/sfc_tweak.h @@ -0,0 +1,45 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * + * Copyright (c) 2016-2018 Solarflare Communications Inc. + * All rights reserved. + * + * This software was jointly developed between OKTET Labs (under contract + * for Solarflare) and Solarflare Communications, Inc. + */ + +#ifndef _SFC_TWEAK_H_ +#define _SFC_TWEAK_H_ + +/* + * The header is intended to collect defines/constants which could be + * tweaked to improve the PMD performance characteristics depending on + * the usecase or requirements (CPU load, packet rate, latency). + */ + +/** + * Number of Rx descriptors in the bulk submitted on Rx ring refill. + */ +#define SFC_RX_REFILL_BULK (RTE_CACHE_LINE_SIZE / sizeof(efx_qword_t)) + +/** + * Make the transmit path reap at least one time per a burst; + * 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 + +/** Default free threshold follows recommendations from DPDK documentation */ +#define SFC_TX_DEFAULT_FREE_THRESH 32 + +/** Number of mbufs to be freed in bulk in a single call */ +#define SFC_TX_REAP_BULK_SIZE 32 + +/** + * Default head-of-line block timeout to wait for Rx descriptor before + * packet drop because of no descriptors available. + * + * DPDK FW variant only with equal stride super-buffer Rx mode. + */ +#define SFC_RXD_WAIT_TIMEOUT_NS_DEF (200U * 1000) + +#endif /* _SFC_TWEAK_H_ */ -- cgit v1.2.3