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Sun, 05 Mar 2017 04:21:35 -0800 (PST) Received: from Ubuntu15.localdomain ([109.74.56.122]) by smtp.gmail.com with ESMTPSA id 127sm10686971wmt.20.2017.03.05.04.21.33 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sun, 05 Mar 2017 04:21:34 -0800 (PST) From: Bill Fischofer To: lng-odp@lists.linaro.org Date: Sun, 5 Mar 2017 13:21:21 +0100 Message-Id: <1488716485-15002-8-git-send-email-bill.fischofer@linaro.org> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1488716485-15002-1-git-send-email-bill.fischofer@linaro.org> References: <1488716485-15002-1-git-send-email-bill.fischofer@linaro.org> Subject: [lng-odp] [PATCH 07/11] linux-generic: packet: unshared_len maintenance 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" Add code to initialize and maintain unshared_len packet metadata Signed-off-by: Bill Fischofer --- .../linux-generic/include/odp_packet_internal.h | 4 ++ platform/linux-generic/odp_packet.c | 43 +++++++++++++++++----- 2 files changed, 37 insertions(+), 10 deletions(-) -- 2.5.0 diff --git a/platform/linux-generic/include/odp_packet_internal.h b/platform/linux-generic/include/odp_packet_internal.h index 39deae2..b6afd58 100644 --- a/platform/linux-generic/include/odp_packet_internal.h +++ b/platform/linux-generic/include/odp_packet_internal.h @@ -19,6 +19,7 @@ extern "C" { #include #include +#include #include #include #include @@ -217,7 +218,10 @@ static inline void packet_ref_count_set(odp_packet_hdr_t *pkt_hdr, uint32_t n) static inline void packet_set_len(odp_packet_hdr_t *pkt_hdr, uint32_t len) { + ODP_ASSERT(packet_ref_count(pkt_hdr) == 1); + pkt_hdr->frame_len = len; + pkt_hdr->unshared_len = len; } static inline int packet_parse_l2_not_done(packet_parser_t *prs) diff --git a/platform/linux-generic/odp_packet.c b/platform/linux-generic/odp_packet.c index 16b482d..d491021 100644 --- a/platform/linux-generic/odp_packet.c +++ b/platform/linux-generic/odp_packet.c @@ -138,6 +138,7 @@ static inline void push_head(odp_packet_hdr_t *pkt_hdr, uint32_t len) { pkt_hdr->headroom -= len; pkt_hdr->frame_len += len; + pkt_hdr->unshared_len += len; pkt_hdr->buf_hdr.seg[0].data -= len; pkt_hdr->buf_hdr.seg[0].len += len; } @@ -146,6 +147,7 @@ static inline void pull_head(odp_packet_hdr_t *pkt_hdr, uint32_t len) { pkt_hdr->headroom += len; pkt_hdr->frame_len -= len; + pkt_hdr->unshared_len -= len; pkt_hdr->buf_hdr.seg[0].data += len; pkt_hdr->buf_hdr.seg[0].len -= len; } @@ -156,6 +158,7 @@ static inline void push_tail(odp_packet_hdr_t *pkt_hdr, uint32_t len) pkt_hdr->tailroom -= len; pkt_hdr->frame_len += len; + pkt_hdr->unshared_len += len; pkt_hdr->buf_hdr.seg[last].len += len; } @@ -163,8 +166,11 @@ static inline void pull_tail(odp_packet_hdr_t *pkt_hdr, uint32_t len) { int last = pkt_hdr->buf_hdr.segcount - 1; + ODP_ASSERT(packet_ref_count(pkt_hdr) == 1); + pkt_hdr->tailroom += len; pkt_hdr->frame_len -= len; + pkt_hdr->unshared_len -= len; pkt_hdr->buf_hdr.seg[last].len -= len; } @@ -192,6 +198,10 @@ static inline void packet_seg_copy_md(odp_packet_hdr_t *dst, dst->buf_hdr.uarea_addr = src->buf_hdr.uarea_addr; dst->buf_hdr.uarea_size = src->buf_hdr.uarea_size; + /* reference related metadata */ + dst->ref_len = src->ref_len; + dst->unshared_len = src->unshared_len; + /* segmentation data is not copied: * buf_hdr.seg[] * buf_hdr.segcount @@ -433,9 +443,10 @@ static inline odp_packet_hdr_t *add_segments(odp_packet_hdr_t *pkt_hdr, new_hdr->buf_hdr.seg[0].len = seg_len; packet_seg_copy_md(new_hdr, pkt_hdr); - new_hdr->frame_len = pkt_hdr->frame_len + len; - new_hdr->headroom = pool->headroom + offset; - new_hdr->tailroom = pkt_hdr->tailroom; + new_hdr->frame_len = pkt_hdr->frame_len + len; + new_hdr->unshared_len = pkt_hdr->unshared_len + len; + new_hdr->headroom = pool->headroom + offset; + new_hdr->tailroom = pkt_hdr->tailroom; pkt_hdr = new_hdr; } else { @@ -448,8 +459,9 @@ static inline odp_packet_hdr_t *add_segments(odp_packet_hdr_t *pkt_hdr, last = packet_last_seg(pkt_hdr); pkt_hdr->buf_hdr.seg[last].len = seg_len; - pkt_hdr->frame_len += len; - pkt_hdr->tailroom = pool->tailroom + offset; + pkt_hdr->frame_len += len; + pkt_hdr->unshared_len += len; + pkt_hdr->tailroom = pool->tailroom + offset; } return pkt_hdr; @@ -487,9 +499,10 @@ static inline odp_packet_hdr_t *free_segments(odp_packet_hdr_t *pkt_hdr, packet_seg_copy_md(new_hdr, pkt_hdr); /* Tailroom not changed */ - new_hdr->tailroom = pkt_hdr->tailroom; - new_hdr->headroom = seg_headroom(new_hdr, 0); - new_hdr->frame_len = pkt_hdr->frame_len - free_len; + new_hdr->tailroom = pkt_hdr->tailroom; + new_hdr->headroom = seg_headroom(new_hdr, 0); + new_hdr->frame_len = pkt_hdr->frame_len - free_len; + new_hdr->unshared_len = pkt_hdr->unshared_len - free_len; pull_head(new_hdr, pull_len); @@ -504,6 +517,7 @@ static inline odp_packet_hdr_t *free_segments(odp_packet_hdr_t *pkt_hdr, * of the metadata. */ pkt_hdr->buf_hdr.segcount = num_remain; pkt_hdr->frame_len -= free_len; + pkt_hdr->unshared_len -= free_len; pkt_hdr->tailroom = seg_tailroom(pkt_hdr, num_remain - 1); pull_tail(pkt_hdr, pull_len); @@ -971,6 +985,7 @@ int odp_packet_extend_head(odp_packet_t *pkt, uint32_t len, pkt_hdr->buf_hdr.segcount = segs; pkt_hdr->frame_len = frame_len; + pkt_hdr->unshared_len = frame_len; pkt_hdr->headroom = offset + pool->headroom; pkt_hdr->tailroom = pool->tailroom; @@ -1012,6 +1027,8 @@ void *odp_packet_pull_head(odp_packet_t pkt, uint32_t len) if (len > pkt_hdr->frame_len) return NULL; + ODP_ASSERT(len <= pkt_hdr->unshared_len); + pull_head(pkt_hdr, len); return packet_data(pkt_hdr); } @@ -1387,6 +1404,8 @@ int odp_packet_add_data(odp_packet_t *pkt_ptr, uint32_t offset, uint32_t len) if (offset > pktlen) return -1; + ODP_ASSERT(odp_packet_unshared_len(*pkt_ptr) >= offset); + newpkt = odp_packet_alloc(pkt_hdr->buf_hdr.pool_hdl, pktlen + len); if (newpkt == ODP_PACKET_INVALID) @@ -1506,8 +1525,9 @@ int odp_packet_concat(odp_packet_t *dst, odp_packet_t src) add_all_segs(dst_hdr, src_hdr); - dst_hdr->frame_len = dst_len + src_len; - dst_hdr->tailroom = src_hdr->tailroom; + dst_hdr->frame_len = dst_len + src_len; + dst_hdr->unshared_len = dst_len + src_len; + dst_hdr->tailroom = src_hdr->tailroom; /* Data was not moved in memory */ return 0; @@ -1520,6 +1540,7 @@ int odp_packet_split(odp_packet_t *pkt, uint32_t len, odp_packet_t *tail) if (len >= pktlen || tail == NULL) return -1; + ODP_ASSERT(odp_packet_unshared_len(*pkt) >= len); *tail = odp_packet_copy_part(*pkt, len, pktlen - len, odp_packet_pool(*pkt)); @@ -1605,6 +1626,8 @@ int odp_packet_copy_from_mem(odp_packet_t pkt, uint32_t offset, if (offset + len > pkt_hdr->frame_len) return -1; + ODP_ASSERT(odp_packet_unshared_len(pkt) >= offset + len); + while (len > 0) { mapaddr = packet_map(pkt_hdr, offset, &seglen, NULL); cpylen = len > seglen ? seglen : len;