/* add new TX flags here */
+/**
+ * Offload the MACsec. This flag must be set by the application to enable
+ * this offload feature for a packet to be transmitted.
+ */
+#define PKT_TX_MACSEC (1ULL << 44)
+
/**
* Bits 45:48 used for the tunnel type.
* When doing Tx offload like TSO or checksum, the HW needs to configure the
*/
#define PKT_TX_OUTER_IPV6 (1ULL << 60)
+/**
+ * Bitmask of all supported packet Tx offload features flags,
+ * which can be set for packet.
+ */
+#define PKT_TX_OFFLOAD_MASK ( \
+ PKT_TX_IP_CKSUM | \
+ PKT_TX_L4_MASK | \
+ PKT_TX_OUTER_IP_CKSUM | \
+ PKT_TX_TCP_SEG | \
+ PKT_TX_IEEE1588_TMST | \
+ PKT_TX_QINQ_PKT | \
+ PKT_TX_VLAN_PKT | \
+ PKT_TX_TUNNEL_MASK | \
+ PKT_TX_MACSEC)
+
#define __RESERVED (1ULL << 61) /**< reserved for future mbuf use */
#define IND_ATTACHED_MBUF (1ULL << 62) /**< Indirect attached mbuf */
mi->buf_addr = m->buf_addr;
mi->buf_len = m->buf_len;
- mi->next = m->next;
mi->data_off = m->data_off;
mi->data_len = m->data_len;
mi->port = m->port;
return 0;
}
+/**
+ * Validate general requirements for Tx offload in mbuf.
+ *
+ * This function checks correctness and completeness of Tx offload settings.
+ *
+ * @param m
+ * The packet mbuf to be validated.
+ * @return
+ * 0 if packet is valid
+ */
+static inline int
+rte_validate_tx_offload(const struct rte_mbuf *m)
+{
+ uint64_t ol_flags = m->ol_flags;
+ uint64_t inner_l3_offset = m->l2_len;
+
+ /* Does packet set any of available offloads? */
+ if (!(ol_flags & PKT_TX_OFFLOAD_MASK))
+ return 0;
+
+ if (ol_flags & PKT_TX_OUTER_IP_CKSUM)
+ inner_l3_offset += m->outer_l2_len + m->outer_l3_len;
+
+ /* Headers are fragmented */
+ if (rte_pktmbuf_data_len(m) < inner_l3_offset + m->l3_len + m->l4_len)
+ return -ENOTSUP;
+
+ /* IP checksum can be counted only for IPv4 packet */
+ if ((ol_flags & PKT_TX_IP_CKSUM) && (ol_flags & PKT_TX_IPV6))
+ return -EINVAL;
+
+ /* IP type not set when required */
+ if (ol_flags & (PKT_TX_L4_MASK | PKT_TX_TCP_SEG))
+ if (!(ol_flags & (PKT_TX_IPV4 | PKT_TX_IPV6)))
+ return -EINVAL;
+
+ /* Check requirements for TSO packet */
+ if (ol_flags & PKT_TX_TCP_SEG)
+ if ((m->tso_segsz == 0) ||
+ ((ol_flags & PKT_TX_IPV4) &&
+ !(ol_flags & PKT_TX_IP_CKSUM)))
+ return -EINVAL;
+
+ /* PKT_TX_OUTER_IP_CKSUM set for non outer IPv4 packet. */
+ if ((ol_flags & PKT_TX_OUTER_IP_CKSUM) &&
+ !(ol_flags & PKT_TX_OUTER_IPV4))
+ return -EINVAL;
+
+ return 0;
+}
+
+/**
+ * Linearize data in mbuf.
+ *
+ * This function moves the mbuf data in the first segment if there is enough
+ * tailroom. The subsequent segments are unchained and freed.
+ *
+ * @param mbuf
+ * mbuf to linearize
+ * @return
+ * - 0, on success
+ * - -1, on error
+ */
+static inline int
+rte_pktmbuf_linearize(struct rte_mbuf *mbuf)
+{
+ int seg_len, copy_len;
+ struct rte_mbuf *m;
+ struct rte_mbuf *m_next;
+ char *buffer;
+
+ if (rte_pktmbuf_is_contiguous(mbuf))
+ return 0;
+
+ /* Extend first segment to the total packet length */
+ copy_len = rte_pktmbuf_pkt_len(mbuf) - rte_pktmbuf_data_len(mbuf);
+
+ if (unlikely(copy_len > rte_pktmbuf_tailroom(mbuf)))
+ return -1;
+
+ buffer = rte_pktmbuf_mtod_offset(mbuf, char *, mbuf->data_len);
+ mbuf->data_len = (uint16_t)(mbuf->pkt_len);
+
+ /* Append data from next segments to the first one */
+ m = mbuf->next;
+ while (m != NULL) {
+ m_next = m->next;
+
+ seg_len = rte_pktmbuf_data_len(m);
+ rte_memcpy(buffer, rte_pktmbuf_mtod(m, char *), seg_len);
+ buffer += seg_len;
+
+ rte_pktmbuf_free_seg(m);
+ m = m_next;
+ }
+
+ mbuf->next = NULL;
+ mbuf->nb_segs = 1;
+
+ return 0;
+}
+
/**
* Dump an mbuf structure to a file.
*