diff mbox

[dpdk-dev,v8,04/10] mbuf: add new marcos to get the physical address of data

Message ID 1448457917-27695-5-git-send-email-declan.doherty@intel.com (mailing list archive)
State Accepted, archived
Headers

Commit Message

Doherty, Declan Nov. 25, 2015, 1:25 p.m. UTC 
  Signed-off-by: Declan Doherty <declan.doherty@intel.com>
Acked-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>

---
 lib/librte_mbuf/rte_mbuf.h | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
diff mbox

Patch

diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
index 4a93189..6a1c133 100644
--- a/lib/librte_mbuf/rte_mbuf.h
+++ b/lib/librte_mbuf/rte_mbuf.h
@@ -1622,6 +1622,27 @@  static inline struct rte_mbuf *rte_pktmbuf_lastseg(struct rte_mbuf *m)
 #define rte_pktmbuf_mtod(m, t) rte_pktmbuf_mtod_offset(m, t, 0)
 
 /**
+ * A macro that returns the physical address that points to an offset of the
+ * start of the data in the mbuf
+ *
+ * @param m
+ *   The packet mbuf.
+ * @param o
+ *   The offset into the data to calculate address from.
+ */
+#define rte_pktmbuf_mtophys_offset(m, o) \
+	(phys_addr_t)((m)->buf_physaddr + (m)->data_off + (o))
+
+/**
+ * A macro that returns the physical address that points to the start of the
+ * data in the mbuf
+ *
+ * @param m
+ *   The packet mbuf.
+ */
+#define rte_pktmbuf_mtophys(m) rte_pktmbuf_mtophys_offset(m, 0)
+
+/**
  * A macro that returns the length of the packet.
  *
  * The value can be read or assigned.