*/
#include <stddef.h>
-#include <stdint.h>
#include <errno.h>
-#include <rte_byteorder.h>
#include <rte_memcpy.h>
#include <rte_mempool.h>
#include <rte_debug.h>
-#include <rte_mbuf.h>
-#include <rte_ip.h>
-#include "rte_ip_frag.h"
-
-/*
- * MAX number of fragments per packet allowed.
- */
-#define IPV4_MAX_FRAGS_PER_PACKET 0x80
-
-/* Debug on/off */
-#ifdef RTE_IPV4_FRAG_DEBUG
-
-#define RTE_IPV4_FRAG_ASSERT(exp) \
-if (!(exp)) { \
- rte_panic("function %s, line%d\tassert \"" #exp "\" failed\n", \
- __func__, __LINE__); \
-}
-
-#else /*RTE_IPV4_FRAG_DEBUG*/
-
-#define RTE_IPV4_FRAG_ASSERT(exp) do { } while(0)
-
-#endif /*RTE_IPV4_FRAG_DEBUG*/
+#include "ip_frag_common.h"
/* Fragment Offset */
#define IPV4_HDR_DF_SHIFT 14
* Otherwise - (-1) * <errno>.
*/
int32_t
-rte_ipv4_fragmentation(struct rte_mbuf *pkt_in,
+rte_ipv4_fragment_packet(struct rte_mbuf *pkt_in,
struct rte_mbuf **pkts_out,
uint16_t nb_pkts_out,
uint16_t mtu_size,
frag_size = (uint16_t)(mtu_size - sizeof(struct ipv4_hdr));
/* Fragment size should be a multiply of 8. */
- RTE_IPV4_FRAG_ASSERT((frag_size & IPV4_HDR_FO_MASK) == 0);
+ RTE_ASSERT((frag_size & IPV4_HDR_FO_MASK) == 0);
- /* Fragment size should be a multiply of 8. */
- RTE_IPV4_FRAG_ASSERT(IPV4_MAX_FRAGS_PER_PACKET * frag_size >=
- (uint16_t)(pkt_in->pkt.pkt_len - sizeof (struct ipv4_hdr)));
-
- in_hdr = (struct ipv4_hdr*) pkt_in->pkt.data;
+ 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);
+ 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.pkt_len - sizeof (struct ipv4_hdr))))
- return (-EINVAL);
+ 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 = rte_pktmbuf_alloc(pool_direct);
if (unlikely(out_pkt == NULL)) {
__free_fragments(pkts_out, out_pkt_pos);
- return (-ENOMEM);
+ return -ENOMEM;
}
/* Reserve space for the IP header that will be built later */
- out_pkt->pkt.data_len = sizeof(struct ipv4_hdr);
- out_pkt->pkt.pkt_len = sizeof(struct ipv4_hdr);
+ 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;
if (unlikely(out_seg == NULL)) {
rte_pktmbuf_free(out_pkt);
__free_fragments(pkts_out, out_pkt_pos);
- return (-ENOMEM);
+ return -ENOMEM;
}
- out_seg_prev->pkt.next = out_seg;
+ 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.pkt_len;
- if (len > (in_seg->pkt.data_len - in_seg_data_pos)) {
- len = in_seg->pkt.data_len - in_seg_data_pos;
+ 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->pkt.data = (char*) in_seg->pkt.data + (uint16_t)in_seg_data_pos;
- out_seg->pkt.data_len = (uint16_t)len;
- out_pkt->pkt.pkt_len = (uint16_t)(len +
- out_pkt->pkt.pkt_len);
- out_pkt->pkt.nb_segs += 1;
+ 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.pkt_len >= mtu_size)) {
+ if (unlikely(out_pkt->pkt_len >= mtu_size))
more_out_segs = 0;
- }
/* Current input segment done ? */
- if (unlikely(in_seg_data_pos == in_seg->pkt.data_len)) {
- in_seg = in_seg->pkt.next;
+ 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)) {
+ if (unlikely(in_seg == NULL))
more_in_segs = 0;
- }
}
}
/* Build the IP header */
- out_hdr = (struct ipv4_hdr*) out_pkt->pkt.data;
+ out_hdr = rte_pktmbuf_mtod(out_pkt, struct ipv4_hdr *);
__fill_ipv4hdr_frag(out_hdr, in_hdr,
- (uint16_t)out_pkt->pkt.pkt_len,
+ (uint16_t)out_pkt->pkt_len,
flag_offset, fragment_offset, more_in_segs);
fragment_offset = (uint16_t)(fragment_offset +
- out_pkt->pkt.pkt_len - sizeof(struct ipv4_hdr));
+ out_pkt->pkt_len - sizeof(struct ipv4_hdr));
out_pkt->ol_flags |= PKT_TX_IP_CKSUM;
- out_pkt->pkt.vlan_macip.f.l3_len = sizeof(struct ipv4_hdr);
+ 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);
+ return out_pkt_pos;
}
git.droids-corp.org / dpdk.git / blobdiff