diff options
Diffstat (limited to 'src/dpdk_lib18/librte_ip_frag/rte_ipv4_fragmentation.c')
| -rwxr-xr-x | src/dpdk_lib18/librte_ip_frag/rte_ipv4_fragmentation.c | 209 |
1 files changed, 0 insertions, 209 deletions
diff --git a/src/dpdk_lib18/librte_ip_frag/rte_ipv4_fragmentation.c b/src/dpdk_lib18/librte_ip_frag/rte_ipv4_fragmentation.c deleted file mode 100755 index a4ed9238..00000000 --- a/src/dpdk_lib18/librte_ip_frag/rte_ipv4_fragmentation.c +++ /dev/null @@ -1,209 +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 <errno.h> - -#include <rte_memcpy.h> -#include <rte_mempool.h> -#include <rte_debug.h> - -#include "ip_frag_common.h" - -/* Fragment Offset */ -#define IPV4_HDR_DF_SHIFT 14 -#define IPV4_HDR_MF_SHIFT 13 -#define IPV4_HDR_FO_SHIFT 3 - -#define IPV4_HDR_DF_MASK (1 << IPV4_HDR_DF_SHIFT) -#define IPV4_HDR_MF_MASK (1 << IPV4_HDR_MF_SHIFT) - -#define IPV4_HDR_FO_MASK ((1 << IPV4_HDR_FO_SHIFT) - 1) - -static inline void __fill_ipv4hdr_frag(struct ipv4_hdr *dst, - const struct ipv4_hdr *src, uint16_t len, uint16_t fofs, - uint16_t dofs, uint32_t mf) -{ - rte_memcpy(dst, src, sizeof(*dst)); - fofs = (uint16_t)(fofs + (dofs >> IPV4_HDR_FO_SHIFT)); - fofs = (uint16_t)(fofs | mf << IPV4_HDR_MF_SHIFT); - dst->fragment_offset = rte_cpu_to_be_16(fofs); - dst->total_length = rte_cpu_to_be_16(len); - dst->hdr_checksum = 0; -} - -static inline void __free_fragments(struct rte_mbuf *mb[], uint32_t num) -{ - uint32_t i; - for (i = 0; i != num; i++) - rte_pktmbuf_free(mb[i]); -} - -/** - * IPv4 fragmentation. - * - * This function implements the fragmentation of IPv4 packets. - * - * @param pkt_in - * The input packet. - * @param pkts_out - * Array storing the output fragments. - * @param mtu_size - * Size in bytes of the Maximum Transfer Unit (MTU) for the outgoing IPv4 - * datagrams. This value includes the size of the IPv4 header. - * @param pool_direct - * MBUF pool used for allocating direct buffers for the output fragments. - * @param pool_indirect - * MBUF pool used for allocating indirect buffers for the output fragments. - * @return - * Upon successful completion - number of output fragments placed - * in the pkts_out array. - * Otherwise - (-1) * <errno>. - */ -int32_t -rte_ipv4_fragment_packet(struct rte_mbuf *pkt_in, - struct rte_mbuf **pkts_out, - uint16_t nb_pkts_out, - uint16_t mtu_size, - struct rte_mempool *pool_direct, - struct rte_mempool *pool_indirect) -{ - struct rte_mbuf *in_seg = NULL; - struct ipv4_hdr *in_hdr; - uint32_t out_pkt_pos, in_seg_data_pos; - uint32_t more_in_segs; - uint16_t fragment_offset, flag_offset, frag_size; - - frag_size = (uint16_t)(mtu_size - sizeof(struct ipv4_hdr)); - - /* Fragment size should be a multiply of 8. */ - IP_FRAG_ASSERT((frag_size & IPV4_HDR_FO_MASK) == 0); - - in_hdr = rte_pktmbuf_mtod(pkt_in, struct ipv4_hdr *); - flag_offset = rte_cpu_to_be_16(in_hdr->fragment_offset); - - /* If Don't Fragment flag is set */ - if (unlikely ((flag_offset & IPV4_HDR_DF_MASK) != 0)) - return -ENOTSUP; - - /* 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 ipv4_hdr)))) - return -EINVAL; - - in_seg = pkt_in; - in_seg_data_pos = sizeof(struct ipv4_hdr); - out_pkt_pos = 0; - fragment_offset = 0; - - more_in_segs = 1; - while (likely(more_in_segs)) { - struct rte_mbuf *out_pkt = NULL, *out_seg_prev = NULL; - uint32_t more_out_segs; - struct ipv4_hdr *out_hdr; - - /* Allocate direct buffer */ - out_pkt = rte_pktmbuf_alloc(pool_direct); - if (unlikely(out_pkt == NULL)) { - __free_fragments(pkts_out, out_pkt_pos); - return -ENOMEM; - } - - /* Reserve space for the IP header that will be built later */ - out_pkt->data_len = sizeof(struct ipv4_hdr); - out_pkt->pkt_len = sizeof(struct ipv4_hdr); - - out_seg_prev = out_pkt; - more_out_segs = 1; - while (likely(more_out_segs && more_in_segs)) { - struct rte_mbuf *out_seg = NULL; - uint32_t len; - - /* Allocate indirect buffer */ - out_seg = rte_pktmbuf_alloc(pool_indirect); - if (unlikely(out_seg == NULL)) { - rte_pktmbuf_free(out_pkt); - __free_fragments(pkts_out, out_pkt_pos); - return -ENOMEM; - } - out_seg_prev->next = out_seg; - out_seg_prev = out_seg; - - /* Prepare indirect buffer */ - rte_pktmbuf_attach(out_seg, in_seg); - len = mtu_size - out_pkt->pkt_len; - if (len > (in_seg->data_len - in_seg_data_pos)) { - len = in_seg->data_len - in_seg_data_pos; - } - out_seg->data_off = in_seg->data_off + in_seg_data_pos; - out_seg->data_len = (uint16_t)len; - out_pkt->pkt_len = (uint16_t)(len + - out_pkt->pkt_len); - out_pkt->nb_segs += 1; - in_seg_data_pos += len; - - /* Current output packet (i.e. fragment) done ? */ - if (unlikely(out_pkt->pkt_len >= mtu_size)) - more_out_segs = 0; - - /* Current input segment done ? */ - if (unlikely(in_seg_data_pos == in_seg->data_len)) { - in_seg = in_seg->next; - in_seg_data_pos = 0; - - if (unlikely(in_seg == NULL)) - more_in_segs = 0; - } - } - - /* Build the IP header */ - - out_hdr = rte_pktmbuf_mtod(out_pkt, struct ipv4_hdr *); - - __fill_ipv4hdr_frag(out_hdr, in_hdr, - (uint16_t)out_pkt->pkt_len, - flag_offset, fragment_offset, more_in_segs); - - fragment_offset = (uint16_t)(fragment_offset + - out_pkt->pkt_len - sizeof(struct ipv4_hdr)); - - out_pkt->ol_flags |= PKT_TX_IP_CKSUM; - out_pkt->l3_len = sizeof(struct ipv4_hdr); - - /* Write the fragment to the output list */ - pkts_out[out_pkt_pos] = out_pkt; - out_pkt_pos ++; - } - - return out_pkt_pos; -} |