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[66.68.129.43]) by smtp.gmail.com with ESMTPSA id b3sm6959158otc.30.2016.04.25.13.14.26 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 25 Apr 2016 13:14:26 -0700 (PDT) From: Bill Fischofer To: lng-odp@lists.linaro.org Date: Mon, 25 Apr 2016 15:14:17 -0500 Message-Id: <1461615258-17929-7-git-send-email-bill.fischofer@linaro.org> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1461615258-17929-1-git-send-email-bill.fischofer@linaro.org> References: <1461615258-17929-1-git-send-email-bill.fischofer@linaro.org> X-Topics: patch Subject: [lng-odp] [API-NEXT PATCHv2 6/7] linux-generic: packet: implement new packet APIs 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: , MIME-Version: 1.0 Errors-To: lng-odp-bounces@lists.linaro.org Sender: "lng-odp" Implement the following new Packet APIs: odp_packet_align() odp_packet_concat() odp_packet_split() odp_packet_copy_part() odp_packet_copy_data() odp_packet_move_data() Signed-off-by: Bill Fischofer --- platform/linux-generic/odp_packet.c | 105 ++++++++++++++++++++++++++++++++++++ 1 file changed, 105 insertions(+) diff --git a/platform/linux-generic/odp_packet.c b/platform/linux-generic/odp_packet.c index d84a3cc..0b447e4 100644 --- a/platform/linux-generic/odp_packet.c +++ b/platform/linux-generic/odp_packet.c @@ -673,6 +673,80 @@ int odp_packet_rem_data(odp_packet_t *pkt_ptr, uint32_t offset, uint32_t len) return 1; } +int odp_packet_align(odp_packet_t *pkt, uint32_t offset, uint32_t len, + uint32_t align) +{ + int rc; + uint32_t shift; + uint32_t seglen = 0; /* GCC */ + odp_packet_hdr_t *pkt_hdr = odp_packet_hdr(*pkt); + void *addr = packet_map(pkt_hdr, offset, &seglen); + uint64_t uaddr = (uint64_t)addr; + uint64_t misalign; + + if (align > ODP_CACHE_LINE_SIZE) + align = ODP_CACHE_LINE_SIZE; + + if (seglen >= len) { + misalign = align <= 1 ? 0 : + ODP_ALIGN_ROUNDUP(uaddr, align) - uaddr; + if (misalign == 0) + return 0; + shift = align - misalign; + } else { + if (len > pkt_hdr->buf_hdr.segsize) + return -1; + shift = len - seglen; + uaddr -= shift; + misalign = align <= 1 ? 0 : + ODP_ALIGN_ROUNDUP(uaddr, align) - uaddr; + if (misalign) + shift += align - misalign; + } + + rc = odp_packet_extend_head(pkt, shift, NULL, NULL); + if (rc < 0) + return rc; + + (void)odp_packet_move_data(*pkt, 0, shift, + odp_packet_len(*pkt) - shift); + + (void)odp_packet_trunc_tail(pkt, shift, NULL, NULL); + return 1; +} + +int odp_packet_concat(odp_packet_t *dst, odp_packet_t src) +{ + uint32_t dst_len = odp_packet_len(*dst); + uint32_t src_len = odp_packet_len(src); + + if (odp_packet_extend_tail(dst, src_len, NULL, NULL) >= 0) { + (void)odp_packet_copy_from_pkt(*dst, dst_len, + src, 0, src_len); + if (src != *dst) + odp_packet_free(src); + return 0; + } + + return -1; +} + +int odp_packet_split(odp_packet_t *pkt, uint32_t len, odp_packet_t *tail) +{ + uint32_t pktlen = odp_packet_len(*pkt); + + if (len >= pktlen || tail == NULL) + return -1; + + *tail = odp_packet_copy_part(*pkt, len, pktlen - len, + odp_packet_pool(*pkt)); + + if (*tail == ODP_PACKET_INVALID) + return -1; + + return odp_packet_trunc_tail(pkt, pktlen - len, NULL, NULL); +} + /* * * Copy @@ -708,6 +782,22 @@ odp_packet_t odp_packet_copy(odp_packet_t pkt, odp_pool_t pool) return newpkt; } +odp_packet_t odp_packet_copy_part(odp_packet_t pkt, uint32_t offset, + uint32_t len, odp_pool_t pool) +{ + uint32_t pktlen = odp_packet_len(pkt); + odp_packet_t newpkt; + + if (offset >= pktlen || offset + len > pktlen) + return ODP_PACKET_INVALID; + + newpkt = odp_packet_alloc(pool, len); + if (newpkt != ODP_PACKET_INVALID) + odp_packet_copy_from_pkt(newpkt, 0, pkt, offset, len); + + return newpkt; +} + int odp_packet_copy_to_mem(odp_packet_t pkt, uint32_t offset, uint32_t len, void *dst) { @@ -809,6 +899,21 @@ int odp_packet_copy_from_pkt(odp_packet_t dst, uint32_t dst_offset, return 0; } + +int odp_packet_copy_data(odp_packet_t pkt, uint32_t dst_offset, + uint32_t src_offset, uint32_t len) +{ + return odp_packet_copy_from_pkt(pkt, dst_offset, + pkt, src_offset, len); +} + +int odp_packet_move_data(odp_packet_t pkt, uint32_t dst_offset, + uint32_t src_offset, uint32_t len) +{ + return odp_packet_copy_from_pkt(pkt, dst_offset, + pkt, src_offset, len); +} + /* * * Debugging