From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by dpdk.org (Postfix) with ESMTP id 4048D91A0 for ; Wed, 4 Nov 2015 11:06:36 +0100 (CET) Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga102.jf.intel.com with ESMTP; 04 Nov 2015 02:06:36 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,242,1444719600"; d="scan'208";a="811444791" Received: from unknown ([10.217.248.15]) by orsmga001.jf.intel.com with SMTP; 04 Nov 2015 02:06:34 -0800 Received: by (sSMTP sendmail emulation); Wed, 04 Nov 2015 11:06:33 +0100 From: Daniel Mrzyglod To: dev@dpdk.org Date: Wed, 4 Nov 2015 11:06:16 +0100 Message-Id: <1446631581-4040-3-git-send-email-danielx.t.mrzyglod@intel.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1446631581-4040-1-git-send-email-danielx.t.mrzyglod@intel.com> References: <1443799208-9408-1-git-send-email-danielx.t.mrzyglod@intel.com> <1446631581-4040-1-git-send-email-danielx.t.mrzyglod@intel.com> Subject: [dpdk-dev] [PATCH v4 2/7] net: Add common PTP structures and functions X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 04 Nov 2015 10:06:36 -0000 This patch add common functions and structures used for PTP processing. Signed-off-by: Daniel Mrzyglod --- lib/librte_net/Makefile | 2 +- lib/librte_net/rte_ptp.h | 105 +++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 106 insertions(+), 1 deletion(-) create mode 100644 lib/librte_net/rte_ptp.h diff --git a/lib/librte_net/Makefile b/lib/librte_net/Makefile index ad2e482..1d33618 100644 --- a/lib/librte_net/Makefile +++ b/lib/librte_net/Makefile @@ -34,7 +34,7 @@ include $(RTE_SDK)/mk/rte.vars.mk CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) -O3 # install includes -SYMLINK-$(CONFIG_RTE_LIBRTE_NET)-include := rte_ip.h rte_tcp.h rte_udp.h rte_sctp.h rte_icmp.h rte_arp.h +SYMLINK-$(CONFIG_RTE_LIBRTE_NET)-include := rte_ip.h rte_tcp.h rte_udp.h rte_sctp.h rte_icmp.h rte_arp.h rte_ptp.h include $(RTE_SDK)/mk/rte.install.mk diff --git a/lib/librte_net/rte_ptp.h b/lib/librte_net/rte_ptp.h new file mode 100644 index 0000000..8a4c83c --- /dev/null +++ b/lib/librte_net/rte_ptp.h @@ -0,0 +1,105 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2015 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#define NSEC_PER_SEC 1000000000L + +/* + * Structure for cyclecounter IEEE1588 functionality. + */ +struct cyclecounter { + uint64_t (*read)(struct rte_eth_dev *dev); + uint64_t mask; + uint32_t shift; +}; + +/* + * Structure to hold and calculate Unix epoch time. + */ +struct timecounter { + struct cyclecounter *cc; + uint64_t cycle_last; + uint64_t nsec; + uint64_t mask; + uint64_t frac; +}; + + +/* Utility functions for PTP/IEEE1588 support. */ + +static inline uint64_t +timespec_to_ns(const struct timespec *ts) +{ + return ((uint64_t) ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec; +} + +static inline struct timespec +ns_to_timespec(uint64_t nsec) +{ + struct timespec ts = {0, 0}; + + if (nsec == 0) + return ts; + + ts.tv_sec = nsec / NSEC_PER_SEC; + ts.tv_nsec = nsec % NSEC_PER_SEC; + + return ts; +} + +/* + * Converts cycle counter cycles to nanoseconds. + */ +static inline uint64_t +cyclecounter_cycles_to_ns(const struct cyclecounter *cc, + uint64_t cycles, uint64_t mask, uint64_t *frac) +{ + uint64_t ns; + + /* Add fractional nanoseconds */ + ns = cycles + *frac; + *frac = ns & mask; + + /* Shift to get only nanoseconds. */ + return ns >> cc->shift; +} + +/* + * Like cyclecounter_cycles_to_ns(), but this is used when + * computing a time previous to the stored in the cycle counter. + */ +static inline uint64_t +cyclecounter_cycles_to_ns_backwards(const struct cyclecounter *cc, + uint64_t cycles, uint64_t frac) +{ + return ((cycles - frac) >> cc->shift); +} -- 2.5.0