diff mbox

[ovs-dev,v2,03/15] dp-packet: Add private data

Message ID 1461290070-63896-4-git-send-email-pshelar@ovn.org
State Superseded
Headers show

Commit Message

Pravin Shelar April 22, 2016, 1:54 a.m. UTC 
This scratchpad can be used by any layer to keep private data.
STT will use it for TCP reassembly state.

Signed-off-by: Pravin B Shelar <pshelar@ovn.org>
Acked-by: Jesse Gross <jesse@kernel.org>
---
 lib/dp-packet.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
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Patch

diff --git a/lib/dp-packet.h b/lib/dp-packet.h
index 000b09d..201fd14 100644
--- a/lib/dp-packet.h
+++ b/lib/dp-packet.h
@@ -36,6 +36,8 @@  enum OVS_PACKED_ENUM dp_packet_source {
                                 * ref to build_dp_packet() in netdev-dpdk. */
 };
 
+#define DP_PACKET_CONTEXT_SIZE 64
+
 /* Buffer for holding packet data.  A dp_packet is automatically reallocated
  * as necessary if it grows too large for the available memory.
  */
@@ -58,7 +60,10 @@  struct dp_packet {
                                     * or UINT16_MAX. */
     uint16_t l4_ofs;               /* Transport-level header offset,
                                       or UINT16_MAX. */
-    struct pkt_metadata md;
+    union {
+        struct pkt_metadata md;
+        uint64_t data[DP_PACKET_CONTEXT_SIZE / 8];
+    };
 };
 
 static inline void *dp_packet_data(const struct dp_packet *);