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authorDan Klein <danklein10@gmail.com>2016-01-04 23:31:31 +0200
committerDan Klein <danklein10@gmail.com>2016-01-04 23:31:31 +0200
commit629b54c4c9df9c718d818a004ecf15c2cf6c770a (patch)
tree7dfc3c64c7561032d690ce6188130e80d344054e /src/dpdk_lib18/librte_ip_frag/rte_ipv6_reassembly.c
parent3757099103ed1bf56f85ccf5bb861a331287cbbb (diff)
parent857bdcf05a920b99e1cf180c700176b04801da00 (diff)
Merge branch 'master' into dan_stateless
Diffstat (limited to 'src/dpdk_lib18/librte_ip_frag/rte_ipv6_reassembly.c')
-rwxr-xr-xsrc/dpdk_lib18/librte_ip_frag/rte_ipv6_reassembly.c222
1 files changed, 0 insertions, 222 deletions
diff --git a/src/dpdk_lib18/librte_ip_frag/rte_ipv6_reassembly.c b/src/dpdk_lib18/librte_ip_frag/rte_ipv6_reassembly.c
deleted file mode 100755
index 71cf721c..00000000
--- a/src/dpdk_lib18/librte_ip_frag/rte_ipv6_reassembly.c
+++ /dev/null
@@ -1,222 +0,0 @@
-/*-
- * 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.
- */
-
-#include <stddef.h>
-
-#include <rte_memcpy.h>
-
-#include "ip_frag_common.h"
-
-/**
- * @file
- * IPv6 reassemble
- *
- * Implementation of IPv6 reassembly.
- *
- */
-
-static inline void
-ip_frag_memmove(char *dst, char *src, int len)
-{
- int i;
-
- /* go backwards to make sure we don't overwrite anything important */
- for (i = len - 1; i >= 0; i--)
- dst[i] = src[i];
-}
-
-/*
- * Reassemble fragments into one packet.
- */
-struct rte_mbuf *
-ipv6_frag_reassemble(const struct ip_frag_pkt *fp)
-{
- struct ipv6_hdr *ip_hdr;
- struct ipv6_extension_fragment *frag_hdr;
- struct rte_mbuf *m, *prev;
- uint32_t i, n, ofs, first_len;
- uint32_t last_len, move_len, payload_len;
-
- first_len = fp->frags[IP_FIRST_FRAG_IDX].len;
- n = fp->last_idx - 1;
-
- /*start from the last fragment. */
- m = fp->frags[IP_LAST_FRAG_IDX].mb;
- ofs = fp->frags[IP_LAST_FRAG_IDX].ofs;
- last_len = fp->frags[IP_LAST_FRAG_IDX].len;
-
- payload_len = ofs + last_len;
-
- while (ofs != first_len) {
-
- prev = m;
-
- for (i = n; i != IP_FIRST_FRAG_IDX && ofs != first_len; i--) {
-
- /* previous fragment found. */
- if (fp->frags[i].ofs + fp->frags[i].len == ofs) {
-
- ip_frag_chain(fp->frags[i].mb, m);
-
- /* update our last fragment and offset. */
- m = fp->frags[i].mb;
- ofs = fp->frags[i].ofs;
- }
- }
-
- /* error - hole in the packet. */
- if (m == prev) {
- return NULL;
- }
- }
-
- /* chain with the first fragment. */
- ip_frag_chain(fp->frags[IP_FIRST_FRAG_IDX].mb, m);
- m = fp->frags[IP_FIRST_FRAG_IDX].mb;
-
- /* update mbuf fields for reassembled packet. */
- m->ol_flags |= PKT_TX_IP_CKSUM;
-
- /* update ipv6 header for the reassembled datagram */
- ip_hdr = (struct ipv6_hdr *) (rte_pktmbuf_mtod(m, uint8_t *) +
- m->l2_len);
-
- ip_hdr->payload_len = rte_cpu_to_be_16(payload_len);
-
- /*
- * remove fragmentation header. note that per RFC2460, we need to update
- * the last non-fragmentable header with the "next header" field to contain
- * type of the first fragmentable header, but we currently don't support
- * other headers, so we assume there are no other headers and thus update
- * the main IPv6 header instead.
- */
- move_len = m->l2_len + m->l3_len - sizeof(*frag_hdr);
- frag_hdr = (struct ipv6_extension_fragment *) (ip_hdr + 1);
- ip_hdr->proto = frag_hdr->next_header;
-
- ip_frag_memmove(rte_pktmbuf_mtod(m, char*) + sizeof(*frag_hdr),
- rte_pktmbuf_mtod(m, char*), move_len);
-
- rte_pktmbuf_adj(m, sizeof(*frag_hdr));
-
- return m;
-}
-
-/*
- * Process new mbuf with fragment of IPV6 datagram.
- * Incoming mbuf should have its l2_len/l3_len fields setup correctly.
- * @param tbl
- * Table where to lookup/add the fragmented packet.
- * @param mb
- * Incoming mbuf with IPV6 fragment.
- * @param tms
- * Fragment arrival timestamp.
- * @param ip_hdr
- * Pointer to the IPV6 header.
- * @param frag_hdr
- * Pointer to the IPV6 fragment extension header.
- * @return
- * Pointer to mbuf for reassembled packet, or NULL if:
- * - an error occured.
- * - not all fragments of the packet are collected yet.
- */
-#define MORE_FRAGS(x) (((x) & 0x100) >> 8)
-#define FRAG_OFFSET(x) (rte_cpu_to_be_16(x) >> 3)
-struct rte_mbuf *
-rte_ipv6_frag_reassemble_packet(struct rte_ip_frag_tbl *tbl,
- struct rte_ip_frag_death_row *dr, struct rte_mbuf *mb, uint64_t tms,
- struct ipv6_hdr *ip_hdr, struct ipv6_extension_fragment *frag_hdr)
-{
- struct ip_frag_pkt *fp;
- struct ip_frag_key key;
- uint16_t ip_len, ip_ofs;
-
- rte_memcpy(&key.src_dst[0], ip_hdr->src_addr, 16);
- rte_memcpy(&key.src_dst[2], ip_hdr->dst_addr, 16);
-
- key.id = frag_hdr->id;
- key.key_len = IPV6_KEYLEN;
-
- ip_ofs = FRAG_OFFSET(frag_hdr->frag_data) * 8;
-
- /*
- * as per RFC2460, payload length contains all extension headers as well.
- * since we don't support anything but frag headers, this is what we remove
- * from the payload len.
- */
- ip_len = rte_be_to_cpu_16(ip_hdr->payload_len) - sizeof(*frag_hdr);
-
- IP_FRAG_LOG(DEBUG, "%s:%d:\n"
- "mbuf: %p, tms: %" PRIu64
- ", key: <" IPv6_KEY_BYTES_FMT ", %#x>, ofs: %u, len: %u, flags: %#x\n"
- "tbl: %p, max_cycles: %" PRIu64 ", entry_mask: %#x, "
- "max_entries: %u, use_entries: %u\n\n",
- __func__, __LINE__,
- mb, tms, IPv6_KEY_BYTES(key.src_dst), key.id, ip_ofs, ip_len, frag_hdr->more_frags,
- tbl, tbl->max_cycles, tbl->entry_mask, tbl->max_entries,
- tbl->use_entries);
-
- /* try to find/add entry into the fragment's table. */
- fp = ip_frag_find(tbl, dr, &key, tms);
- if (fp == NULL) {
- IP_FRAG_MBUF2DR(dr, mb);
- return NULL;
- }
-
- IP_FRAG_LOG(DEBUG, "%s:%d:\n"
- "tbl: %p, max_entries: %u, use_entries: %u\n"
- "ipv6_frag_pkt: %p, key: <" IPv6_KEY_BYTES_FMT ", %#x>, start: %" PRIu64
- ", total_size: %u, frag_size: %u, last_idx: %u\n\n",
- __func__, __LINE__,
- tbl, tbl->max_entries, tbl->use_entries,
- fp, IPv6_KEY_BYTES(fp->key.src_dst), fp->key.id, fp->start,
- fp->total_size, fp->frag_size, fp->last_idx);
-
-
- /* process the fragmented packet. */
- mb = ip_frag_process(fp, dr, mb, ip_ofs, ip_len,
- MORE_FRAGS(frag_hdr->frag_data));
- ip_frag_inuse(tbl, fp);
-
- IP_FRAG_LOG(DEBUG, "%s:%d:\n"
- "mbuf: %p\n"
- "tbl: %p, max_entries: %u, use_entries: %u\n"
- "ipv6_frag_pkt: %p, key: <" IPv6_KEY_BYTES_FMT ", %#x>, start: %" PRIu64
- ", total_size: %u, frag_size: %u, last_idx: %u\n\n",
- __func__, __LINE__, mb,
- tbl, tbl->max_entries, tbl->use_entries,
- fp, IPv6_KEY_BYTES(fp->key.src_dst), fp->key.id, fp->start,
- fp->total_size, fp->frag_size, fp->last_idx);
-
- return mb;
-}