X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_ip_frag%2Frte_ipv6_fragmentation.c;h=bfe44d435d9ee598fb997dec680b192ed0d16ce0;hb=a7c528e5d71ff3f569898d268f9de129fdfc152b;hp=1e30004f26f025fd30f6f6ae55c23997e3405278;hpb=4f8e575f8912c41506826946a8ac396be757060e;p=dpdk.git diff --git a/lib/librte_ip_frag/rte_ipv6_fragmentation.c b/lib/librte_ip_frag/rte_ipv6_fragmentation.c index 1e30004f26..bfe44d435d 100644 --- a/lib/librte_ip_frag/rte_ipv6_fragmentation.c +++ b/lib/librte_ip_frag/rte_ipv6_fragmentation.c @@ -1,34 +1,5 @@ -/*- - * BSD LICENSE - * - * Copyright(c) 2010-2014 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. +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2010-2014 Intel Corporation */ #include @@ -47,8 +18,8 @@ */ static inline void -__fill_ipv6hdr_frag(struct ipv6_hdr *dst, - const struct ipv6_hdr *src, uint16_t len, uint16_t fofs, +__fill_ipv6hdr_frag(struct rte_ipv6_hdr *dst, + const struct rte_ipv6_hdr *src, uint16_t len, uint16_t fofs, uint32_t mf) { struct ipv6_extension_fragment *fh; @@ -102,25 +73,28 @@ rte_ipv6_fragment_packet(struct rte_mbuf *pkt_in, struct rte_mempool *pool_indirect) { struct rte_mbuf *in_seg = NULL; - struct ipv6_hdr *in_hdr; + struct rte_ipv6_hdr *in_hdr; uint32_t out_pkt_pos, in_seg_data_pos; uint32_t more_in_segs; uint16_t fragment_offset, frag_size; + uint64_t frag_bytes_remaining; - frag_size = (uint16_t)(mtu_size - sizeof(struct ipv6_hdr)); - - /* Fragment size should be a multiple of 8. */ - IP_FRAG_ASSERT((frag_size & ~RTE_IPV6_EHDR_FO_MASK) == 0); + /* + * Ensure the IP payload length of all fragments (except the + * the last fragment) are a multiple of 8 bytes per RFC2460. + */ + frag_size = RTE_ALIGN_FLOOR(mtu_size - sizeof(struct rte_ipv6_hdr), + RTE_IPV6_EHDR_FO_ALIGN); /* Check that pkts_out is big enough to hold all fragments */ if (unlikely (frag_size * nb_pkts_out < - (uint16_t)(pkt_in->pkt_len - sizeof (struct ipv6_hdr)))) + (uint16_t)(pkt_in->pkt_len - sizeof(struct rte_ipv6_hdr)))) return -EINVAL; - in_hdr = rte_pktmbuf_mtod(pkt_in, struct ipv6_hdr *); + in_hdr = rte_pktmbuf_mtod(pkt_in, struct rte_ipv6_hdr *); in_seg = pkt_in; - in_seg_data_pos = sizeof(struct ipv6_hdr); + in_seg_data_pos = sizeof(struct rte_ipv6_hdr); out_pkt_pos = 0; fragment_offset = 0; @@ -128,7 +102,7 @@ rte_ipv6_fragment_packet(struct rte_mbuf *pkt_in, while (likely(more_in_segs)) { struct rte_mbuf *out_pkt = NULL, *out_seg_prev = NULL; uint32_t more_out_segs; - struct ipv6_hdr *out_hdr; + struct rte_ipv6_hdr *out_hdr; /* Allocate direct buffer */ out_pkt = rte_pktmbuf_alloc(pool_direct); @@ -138,8 +112,11 @@ rte_ipv6_fragment_packet(struct rte_mbuf *pkt_in, } /* Reserve space for the IP header that will be built later */ - out_pkt->data_len = sizeof(struct ipv6_hdr) + sizeof(struct ipv6_extension_fragment); - out_pkt->pkt_len = sizeof(struct ipv6_hdr) + sizeof(struct ipv6_extension_fragment); + out_pkt->data_len = sizeof(struct rte_ipv6_hdr) + + sizeof(struct ipv6_extension_fragment); + out_pkt->pkt_len = sizeof(struct rte_ipv6_hdr) + + sizeof(struct ipv6_extension_fragment); + frag_bytes_remaining = frag_size; out_seg_prev = out_pkt; more_out_segs = 1; @@ -159,7 +136,7 @@ rte_ipv6_fragment_packet(struct rte_mbuf *pkt_in, /* Prepare indirect buffer */ rte_pktmbuf_attach(out_seg, in_seg); - len = mtu_size - out_pkt->pkt_len; + len = frag_bytes_remaining; if (len > (in_seg->data_len - in_seg_data_pos)) { len = in_seg->data_len - in_seg_data_pos; } @@ -169,11 +146,11 @@ rte_ipv6_fragment_packet(struct rte_mbuf *pkt_in, out_pkt->pkt_len); out_pkt->nb_segs += 1; in_seg_data_pos += len; + frag_bytes_remaining -= len; /* Current output packet (i.e. fragment) done ? */ - if (unlikely(out_pkt->pkt_len >= mtu_size)) { + if (unlikely(frag_bytes_remaining == 0)) more_out_segs = 0; - } /* Current input segment done ? */ if (unlikely(in_seg_data_pos == in_seg->data_len)) { @@ -188,14 +165,14 @@ rte_ipv6_fragment_packet(struct rte_mbuf *pkt_in, /* Build the IP header */ - out_hdr = rte_pktmbuf_mtod(out_pkt, struct ipv6_hdr *); + out_hdr = rte_pktmbuf_mtod(out_pkt, struct rte_ipv6_hdr *); __fill_ipv6hdr_frag(out_hdr, in_hdr, - (uint16_t) out_pkt->pkt_len - sizeof(struct ipv6_hdr), + (uint16_t) out_pkt->pkt_len - sizeof(struct rte_ipv6_hdr), fragment_offset, more_in_segs); fragment_offset = (uint16_t)(fragment_offset + - out_pkt->pkt_len - sizeof(struct ipv6_hdr) + out_pkt->pkt_len - sizeof(struct rte_ipv6_hdr) - sizeof(struct ipv6_extension_fragment)); /* Write the fragment to the output list */