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[91.76.161.180]) by smtp.gmail.com with ESMTPSA id rp6sm28510lbb.44.2015.09.11.05.53.19 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 11 Sep 2015 05:53:19 -0700 (PDT) From: Maxim Uvarov To: lng-odp@lists.linaro.org Date: Fri, 11 Sep 2015 15:53:11 +0300 Message-Id: <1441975993-4687-2-git-send-email-maxim.uvarov@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1441975993-4687-1-git-send-email-maxim.uvarov@linaro.org> References: <1441975993-4687-1-git-send-email-maxim.uvarov@linaro.org> X-Topics: patch Subject: [lng-odp] [API-NEXT PATCHv2 1/3] api: packet reference count support X-BeenThere: lng-odp@lists.linaro.org X-Mailman-Version: 2.1.16 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: , List-Help: , List-Subscribe: , MIME-Version: 1.0 Errors-To: lng-odp-bounces@lists.linaro.org Sender: "lng-odp" X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: maxim.uvarov@linaro.org X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of patch+caf_=patchwork-forward=linaro.org@linaro.org designates 209.85.217.173 as permitted sender) smtp.mailfrom=patch+caf_=patchwork-forward=linaro.org@linaro.org Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org X-Google-Group-Id: 836684582541 Add api for packet reference count support. Which is useful in case: - multicast support - TCP retransmission - traffic generator Introduced new call: newpkt = odp_packet_create_ref(pkt) which creates reference to original packet, but handles for reference packet and original are different. Signed-off-by: Maxim Uvarov --- include/odp/api/packet.h | 9 +++++++++ platform/linux-generic/include/odp_buffer_internal.h | 2 ++ platform/linux-generic/odp_packet.c | 20 ++++++++++++++++++++ 3 files changed, 31 insertions(+) diff --git a/include/odp/api/packet.h b/include/odp/api/packet.h index 5d46b7b..f9745fb 100644 --- a/include/odp/api/packet.h +++ b/include/odp/api/packet.h @@ -125,6 +125,15 @@ odp_packet_t odp_packet_from_event(odp_event_t ev); */ odp_event_t odp_packet_to_event(odp_packet_t pkt); +/** + * Create reference for packet handle + * + * @param pkt Packet handle + * + * @return New packet handle + */ +odp_packet_t odp_packet_create_ref(odp_packet_t pkt); + /* * * Pointers and lengths diff --git a/platform/linux-generic/include/odp_buffer_internal.h b/platform/linux-generic/include/odp_buffer_internal.h index 4cacca1..e079c6b 100644 --- a/platform/linux-generic/include/odp_buffer_internal.h +++ b/platform/linux-generic/include/odp_buffer_internal.h @@ -79,6 +79,7 @@ typedef union odp_buffer_bits_t { uint32_t u32; struct { #if ODP_BYTE_ORDER == ODP_BIG_ENDIAN + uint32_t ref:1; /* pkt is reference for other packet */ uint32_t pool_id:ODP_BUFFER_POOL_BITS; uint32_t index:ODP_BUFFER_INDEX_BITS; uint32_t seg:ODP_BUFFER_SEG_BITS; @@ -86,6 +87,7 @@ typedef union odp_buffer_bits_t { uint32_t seg:ODP_BUFFER_SEG_BITS; uint32_t index:ODP_BUFFER_INDEX_BITS; uint32_t pool_id:ODP_BUFFER_POOL_BITS; + uint32_t ref:1; /* pkt is reference for other packet */ #endif }; diff --git a/platform/linux-generic/odp_packet.c b/platform/linux-generic/odp_packet.c index 209a6e6..2d5a618 100644 --- a/platform/linux-generic/odp_packet.c +++ b/platform/linux-generic/odp_packet.c @@ -49,6 +49,13 @@ odp_packet_t odp_packet_alloc(odp_pool_t pool_hdl, uint32_t len) void odp_packet_free(odp_packet_t pkt) { + odp_buffer_t buf = _odp_packet_to_buffer(pkt); + odp_buffer_bits_t handle; + + handle.handle = buf; + if (handle.ref) + return; + odp_buffer_free((odp_buffer_t)pkt); } @@ -85,6 +92,19 @@ odp_event_t odp_packet_to_event(odp_packet_t pkt) return (odp_event_t)pkt; } +odp_packet_t odp_packet_create_ref(odp_packet_t pkt) +{ + odp_buffer_t buf = _odp_packet_to_buffer(pkt); + odp_buffer_bits_t handle; + + handle.handle = buf; + if (handle.ref) + ODP_ABORT("packet is reference already\n"); + handle.ref = 1; + + return _odp_packet_from_buffer(handle.handle); +} + /* * * Pointers and lengths