+uint16_t
+dpaa_free_mbuf(const struct qm_fd *fd)
+{
+ struct rte_mbuf *mbuf;
+ struct dpaa_bp_info *bp_info;
+ uint8_t format;
+ void *ptr;
+
+ bp_info = DPAA_BPID_TO_POOL_INFO(fd->bpid);
+ format = (fd->opaque & DPAA_FD_FORMAT_MASK) >> DPAA_FD_FORMAT_SHIFT;
+ if (unlikely(format == qm_fd_sg)) {
+ struct rte_mbuf *first_seg, *prev_seg, *cur_seg, *temp;
+ struct qm_sg_entry *sgt, *sg_temp;
+ void *vaddr, *sg_vaddr;
+ int i = 0;
+ uint16_t fd_offset = fd->offset;
+
+ vaddr = DPAA_MEMPOOL_PTOV(bp_info, qm_fd_addr(fd));
+ if (!vaddr) {
+ DPAA_PMD_ERR("unable to convert physical address");
+ return -1;
+ }
+ sgt = vaddr + fd_offset;
+ sg_temp = &sgt[i++];
+ hw_sg_to_cpu(sg_temp);
+ temp = (struct rte_mbuf *)
+ ((char *)vaddr - bp_info->meta_data_size);
+ sg_vaddr = DPAA_MEMPOOL_PTOV(bp_info,
+ qm_sg_entry_get64(sg_temp));
+
+ first_seg = (struct rte_mbuf *)((char *)sg_vaddr -
+ bp_info->meta_data_size);
+ first_seg->nb_segs = 1;
+ prev_seg = first_seg;
+ while (i < DPAA_SGT_MAX_ENTRIES) {
+ sg_temp = &sgt[i++];
+ hw_sg_to_cpu(sg_temp);
+ sg_vaddr = DPAA_MEMPOOL_PTOV(bp_info,
+ qm_sg_entry_get64(sg_temp));
+ cur_seg = (struct rte_mbuf *)((char *)sg_vaddr -
+ bp_info->meta_data_size);
+ first_seg->nb_segs += 1;
+ prev_seg->next = cur_seg;
+ if (sg_temp->final) {
+ cur_seg->next = NULL;
+ break;
+ }
+ prev_seg = cur_seg;
+ }
+
+ rte_pktmbuf_free_seg(temp);
+ rte_pktmbuf_free_seg(first_seg);
+ return 0;
+ }
+
+ ptr = DPAA_MEMPOOL_PTOV(bp_info, qm_fd_addr(fd));
+ mbuf = (struct rte_mbuf *)((char *)ptr - bp_info->meta_data_size);
+
+ rte_pktmbuf_free(mbuf);
+
+ return 0;
+}
+