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[54.225.227.206]) by mx.google.com with ESMTP id z197si2472927qka.413.2017.07.20.13.06.41; Thu, 20 Jul 2017 13:06:41 -0700 (PDT) Received-SPF: pass (google.com: domain of lng-odp-bounces@lists.linaro.org designates 54.225.227.206 as permitted sender) client-ip=54.225.227.206; Authentication-Results: mx.google.com; spf=pass (google.com: domain of lng-odp-bounces@lists.linaro.org designates 54.225.227.206 as permitted sender) smtp.mailfrom=lng-odp-bounces@lists.linaro.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=yandex.ru Received: by lists.linaro.org (Postfix, from userid 109) id A785C65BBD; Thu, 20 Jul 2017 20:06:41 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on ip-10-142-244-252 X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,FREEMAIL_FROM, RCVD_IN_DNSWL_LOW,URIBL_BLOCKED autolearn=disabled version=3.4.0 Received: from [127.0.0.1] (localhost [127.0.0.1]) by lists.linaro.org (Postfix) with ESMTP id E5016658CC; Thu, 20 Jul 2017 20:02:28 +0000 (UTC) X-Original-To: lng-odp@lists.linaro.org Delivered-To: lng-odp@lists.linaro.org Received: by lists.linaro.org (Postfix, from userid 109) id 65BD464A60; Thu, 20 Jul 2017 20:02:24 +0000 (UTC) Received: from forward4o.cmail.yandex.net (forward4o.cmail.yandex.net [37.9.109.248]) by lists.linaro.org (Postfix) with ESMTPS id 1EC5664A60 for ; Thu, 20 Jul 2017 20:00:48 +0000 (UTC) Received: from smtp4j.mail.yandex.net (smtp4j.mail.yandex.net [5.45.198.129]) by forward4o.cmail.yandex.net (Yandex) with ESMTP id 8E70E2072D for ; Thu, 20 Jul 2017 23:00:46 +0300 (MSK) Received: from smtp4j.mail.yandex.net (localhost.localdomain [127.0.0.1]) by smtp4j.mail.yandex.net (Yandex) with ESMTP id 28F8032410F3 for ; Thu, 20 Jul 2017 23:00:45 +0300 (MSK) Received: by smtp4j.mail.yandex.net (nwsmtp/Yandex) with ESMTPSA id 0hzMV06TG7-0jE8OBP3; Thu, 20 Jul 2017 23:00:45 +0300 (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (Client certificate not present) X-Yandex-Suid-Status: 1 0 From: Github ODP bot To: lng-odp@lists.linaro.org Date: Thu, 20 Jul 2017 23:00:31 +0300 Message-Id: <1500580834-26476-8-git-send-email-odpbot@yandex.ru> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1500580834-26476-1-git-send-email-odpbot@yandex.ru> References: <1500580834-26476-1-git-send-email-odpbot@yandex.ru> Github-pr-num: 82 Subject: [lng-odp] [PATCH v4 7/10] linux-generic: packet: restructure free routines for references X-BeenThere: lng-odp@lists.linaro.org X-Mailman-Version: 2.1.16 Precedence: list List-Id: "The OpenDataPlane \(ODP\) List" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: lng-odp-bounces@lists.linaro.org Sender: "lng-odp" From: Bill Fischofer Restructure the various packet/segment free routines to support references. Signed-off-by: Bill Fischofer --- /** Email created from pull request 82 (Bill-Fischofer-Linaro:pktrefs) ** https://github.com/Linaro/odp/pull/82 ** Patch: https://github.com/Linaro/odp/pull/82.patch ** Base sha: 3eeb249a4774f12d2d16ca349a591654eae620ae ** Merge commit sha: f6e0d4b8b10f1803fb4513254c404df31e3f9f3f **/ platform/linux-generic/odp_packet.c | 123 +++++++++++++++++++++++++----------- 1 file changed, 87 insertions(+), 36 deletions(-) diff --git a/platform/linux-generic/odp_packet.c b/platform/linux-generic/odp_packet.c index b31d1d78..a26d6528 100644 --- a/platform/linux-generic/odp_packet.c +++ b/platform/linux-generic/odp_packet.c @@ -438,13 +438,20 @@ static inline odp_packet_hdr_t *add_segments(odp_packet_hdr_t *pkt_hdr, static inline void free_bufs(odp_packet_hdr_t *pkt_hdr, int first, int num) { - int i; + int i, nfree; odp_buffer_hdr_t *buf_hdr[num]; - for (i = 0; i < num; i++) - buf_hdr[i] = pkt_hdr->buf_hdr.seg[first + i].hdr; + for (i = 0, nfree = 0; i < num; i++) { + odp_packet_hdr_t *hdr = pkt_hdr->buf_hdr.seg[first + i].hdr; + + if (packet_ref_count(hdr) == 1 || packet_ref_dec(hdr) == 1) { + ODP_ASSERT((packet_ref_count_set(hdr, 0), 1)); + buf_hdr[nfree++] = &hdr->buf_hdr; + } + } - buffer_free_multi(buf_hdr, num); + if (nfree > 0) + buffer_free_multi(buf_hdr, nfree); } static inline odp_packet_hdr_t *free_segments(odp_packet_hdr_t *pkt_hdr, @@ -455,11 +462,19 @@ static inline odp_packet_hdr_t *free_segments(odp_packet_hdr_t *pkt_hdr, if (head) { odp_packet_hdr_t *new_hdr; - int i; + int i, nfree; odp_buffer_hdr_t *buf_hdr[num]; - for (i = 0; i < num; i++) - buf_hdr[i] = pkt_hdr->buf_hdr.seg[i].hdr; + for (i = 0, nfree = 0; i < num; i++) { + new_hdr = pkt_hdr->buf_hdr.seg[i].hdr; + + if (packet_ref_count(new_hdr) == 1 || + packet_ref_dec(new_hdr) == 1) { + ODP_ASSERT((packet_ref_count_set(new_hdr, 0), + 1)); + buf_hdr[nfree++] = &new_hdr->buf_hdr; + } + } /* First remaining segment is the new packet descriptor */ new_hdr = pkt_hdr->buf_hdr.seg[num].hdr; @@ -477,7 +492,8 @@ static inline odp_packet_hdr_t *free_segments(odp_packet_hdr_t *pkt_hdr, pkt_hdr = new_hdr; - buffer_free_multi(buf_hdr, num); + if (nfree > 0) + buffer_free_multi(buf_hdr, nfree); } else { /* Free last 'num' bufs */ free_bufs(pkt_hdr, num_remain, num); @@ -593,48 +609,80 @@ int odp_packet_alloc_multi(odp_pool_t pool_hdl, uint32_t len, return num; } -void odp_packet_free(odp_packet_t pkt) +static inline void packet_free(odp_packet_hdr_t *pkt_hdr) { - odp_packet_hdr_t *pkt_hdr = packet_hdr(pkt); - odp_buffer_t hdl = buffer_handle(pkt_hdr); + odp_packet_hdr_t *ref_hdr; + odp_buffer_hdr_t *buf_hdr; + uint32_t ref_count; + int num_seg; + + do { + buf_hdr = &pkt_hdr->buf_hdr; + ref_count = packet_ref_count(pkt_hdr); + num_seg = pkt_hdr->buf_hdr.segcount; + ref_hdr = pkt_hdr->ref_hdr; + ODP_ASSERT(ref_count >= 1); + + if (odp_likely((CONFIG_PACKET_MAX_SEGS == 1 || num_seg == 1) && + ref_count == 1)) { + ODP_ASSERT((packet_ref_count_set(pkt_hdr, 0), 1)); + buffer_free_multi(&buf_hdr, 1); + } else { + free_bufs(pkt_hdr, 0, num_seg); + } - int num_seg = pkt_hdr->buf_hdr.segcount; + pkt_hdr = ref_hdr; + } while (pkt_hdr); +} - if (odp_likely(CONFIG_PACKET_MAX_SEGS == 1 || num_seg == 1)) - buffer_free_multi((odp_buffer_hdr_t **)&hdl, 1); - else - free_bufs(pkt_hdr, 0, num_seg); +void odp_packet_free(odp_packet_t pkt) +{ + packet_free(packet_hdr(pkt)); } void odp_packet_free_multi(const odp_packet_t pkt[], int num) { - if (CONFIG_PACKET_MAX_SEGS == 1) { - buffer_free_multi((odp_buffer_hdr_t **)(uintptr_t)pkt, num); - } else { - odp_buffer_hdr_t *buf_hdr[num * CONFIG_PACKET_MAX_SEGS]; - int i; - int j; - int bufs = 0; + odp_packet_hdr_t *pkt_hdr, *ref_hdr, *hdr; + int nbufs = num * CONFIG_PACKET_MAX_SEGS * 2; + odp_buffer_hdr_t *buf_hdr[nbufs]; + int num_seg; + int i, j; + uint32_t ref_count; + int nfree = 0; - for (i = 0; i < num; i++) { - odp_packet_hdr_t *pkt_hdr = packet_hdr(pkt[i]); - int num_seg = pkt_hdr->buf_hdr.segcount; - odp_buffer_hdr_t *hdr = &pkt_hdr->buf_hdr; + for (i = 0; i < num; i++) { + pkt_hdr = packet_hdr(pkt[i]); - buf_hdr[bufs] = hdr; - bufs++; + do { + num_seg = pkt_hdr->buf_hdr.segcount; + ref_hdr = pkt_hdr->ref_hdr; - if (odp_likely(num_seg == 1)) - continue; + /* Make sure we have enough space for this pkt's segs */ + if (nfree + num_seg > nbufs) { + buffer_free_multi(buf_hdr, nfree); + nfree = 0; + } - for (j = 1; j < num_seg; j++) { - buf_hdr[bufs] = hdr->seg[j].hdr; - bufs++; + for (j = 0; j < num_seg; j++) { + hdr = pkt_hdr->buf_hdr.seg[j].hdr; + ref_count = packet_ref_count(hdr); + ODP_ASSERT(ref_count >= 1); + + if (ref_count == 1 || + packet_ref_dec(hdr) == 1) { + ODP_ASSERT + ((packet_ref_count_set(hdr, 0), + 1)); + buf_hdr[nfree++] = &hdr->buf_hdr; + } } - } - buffer_free_multi(buf_hdr, bufs); + pkt_hdr = ref_hdr; + } while (pkt_hdr); } + + if (nfree > 0) + buffer_free_multi(buf_hdr, nfree); } int odp_packet_reset(odp_packet_t pkt, uint32_t len) @@ -646,6 +694,9 @@ int odp_packet_reset(odp_packet_t pkt, uint32_t len) if (odp_unlikely(len > (pool->max_seg_len * num))) return -1; + if (pkt_hdr->ref_hdr) + packet_free(pkt_hdr->ref_hdr); + reset_seg(pkt_hdr, 0, num); packet_init(pkt_hdr, len);