diff options
Diffstat (limited to 'src/dpdk_lib18/librte_ip_frag/rte_ipv6_reassembly.c')
| -rwxr-xr-x | src/dpdk_lib18/librte_ip_frag/rte_ipv6_reassembly.c | 222 |
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; -} |