/* Creates and returns a new dp_packet whose data are copied from 'buffer'. The
* returned dp_packet will additionally have 'headroom' bytes of headroom. */
struct dp_packet *
dp_packet_clone_with_headroom(const struct dp_packet *buffer, size_t headroom)
{
struct dp_packet *new_buffer;
new_buffer = dp_packet_clone_data_with_headroom(dp_packet_data(buffer),
dp_packet_size(buffer),
headroom);
new_buffer->l2_pad_size = buffer->l2_pad_size;
new_buffer->l2_5_ofs = buffer->l2_5_ofs;
new_buffer->l3_ofs = buffer->l3_ofs;
new_buffer->l4_ofs = buffer->l4_ofs;
new_buffer->md = buffer->md;
new_buffer->cutlen = buffer->cutlen;
new_buffer->packet_type = buffer->packet_type;
#ifdef DPDK_NETDEV
new_buffer->mbuf.ol_flags = buffer->mbuf.ol_flags;
#else
new_buffer->rss_hash_valid = buffer->rss_hash_valid;
#endif
if (dp_packet_rss_valid(new_buffer)) {
#ifdef DPDK_NETDEV
new_buffer->mbuf.hash.rss = buffer->mbuf.hash.rss;
#else
new_buffer->rss_hash = buffer->rss_hash;
#endif
}
return new_buffer;
}
/* Creates and returns a new dp_packet whose data are copied from 'buffer'. The
* returned dp_packet will additionally have 'headroom' bytes of headroom. */
struct dp_packet *
dp_packet_clone_with_headroom(const struct dp_packet *buffer, size_t headroom)
{
struct dp_packet *new_buffer;
new_buffer = dp_packet_clone_data_with_headroom(dp_packet_data(buffer),
dp_packet_size(buffer),
headroom);
new_buffer->l2_pad_size = buffer->l2_pad_size;
new_buffer->l2_5_ofs = buffer->l2_5_ofs;
new_buffer->l3_ofs = buffer->l3_ofs;
new_buffer->l4_ofs = buffer->l4_ofs;
new_buffer->md = buffer->md;
return new_buffer;
}
/* Creates and returns a new dp_packet whose data are copied from 'buffer'. The
* returned dp_packet will additionally have 'headroom' bytes of headroom. */
struct dp_packet *
dp_packet_clone_with_headroom(const struct dp_packet *buffer, size_t headroom)
{
struct dp_packet *new_buffer;
new_buffer = dp_packet_clone_data_with_headroom(dp_packet_data(buffer),
dp_packet_size(buffer),
headroom);
if (buffer->frame) {
uintptr_t data_delta
= (char *)dp_packet_data(new_buffer) - (char *)dp_packet_data(buffer);
new_buffer->frame = (char *) buffer->frame + data_delta;
}
new_buffer->l2_pad_size = buffer->l2_pad_size;
new_buffer->l2_5_ofs = buffer->l2_5_ofs;
new_buffer->l3_ofs = buffer->l3_ofs;
new_buffer->l4_ofs = buffer->l4_ofs;
new_buffer->md = buffer->md;
return new_buffer;
}
/* Creates and returns a new dp_packet that initially contains a copy of the
* 'size' bytes of data starting at 'data' with no headroom or tailroom. */
struct dp_packet *
dp_packet_clone_data(const void *data, size_t size)
{
return dp_packet_clone_data_with_headroom(data, size, 0);
}
