Introduce support for DPDK 2.2
Change-Id: Id2c7c4a949363a448a6715463dd81f701f046b93
Signed-off-by: Damjan Marion <damarion@cisco.com>
diff --git a/dpdk/dpdk-2.2.0_patches/0004-mbuf-rearrange-rte_mbuf-metadata-to-suit-vpp.patch b/dpdk/dpdk-2.2.0_patches/0004-mbuf-rearrange-rte_mbuf-metadata-to-suit-vpp.patch
new file mode 100644
index 0000000..bee64df
--- /dev/null
+++ b/dpdk/dpdk-2.2.0_patches/0004-mbuf-rearrange-rte_mbuf-metadata-to-suit-vpp.patch
@@ -0,0 +1,83 @@
+From b8b575a3398c480f6e02525a0933e5e057139b78 Mon Sep 17 00:00:00 2001
+From: Damjan Marion <damarion@cisco.com>
+Date: Wed, 16 Dec 2015 04:25:23 +0100
+Subject: [PATCH 4/4] mbuf: rearrange rte_mbuf metadata to suit vpp
+
+---
+ .../linuxapp/eal/include/exec-env/rte_kni_common.h | 5 +++--
+ lib/librte_mbuf/rte_mbuf.h | 20 ++++++++++++--------
+ 2 files changed, 15 insertions(+), 10 deletions(-)
+
+diff --git a/lib/librte_eal/linuxapp/eal/include/exec-env/rte_kni_common.h b/lib/librte_eal/linuxapp/eal/include/exec-env/rte_kni_common.h
+index bd1cc09..a68a949 100644
+--- a/lib/librte_eal/linuxapp/eal/include/exec-env/rte_kni_common.h
++++ b/lib/librte_eal/linuxapp/eal/include/exec-env/rte_kni_common.h
+@@ -120,11 +120,12 @@ struct rte_kni_mbuf {
+ char pad2[4];
+ uint32_t pkt_len; /**< Total pkt len: sum of all segment data_len. */
+ uint16_t data_len; /**< Amount of data in segment buffer. */
++ char pad3[8];
++ void *next;
+
+ /* fields on second cache line */
+- char pad3[8] __attribute__((__aligned__(RTE_CACHE_LINE_SIZE)));
++ char pad4[16] __attribute__((__aligned__(RTE_CACHE_LINE_SIZE)));
+ void *pool;
+- void *next;
+ };
+
+ /*
+diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
+index f234ac9..a1b4405 100644
+--- a/lib/librte_mbuf/rte_mbuf.h
++++ b/lib/librte_mbuf/rte_mbuf.h
+@@ -734,6 +734,12 @@ struct rte_mbuf_offload;
+ /**
+ * The generic rte_mbuf, containing a packet mbuf.
+ */
++/*
++ * offload in the second cache line, next in the first. Better for vpp
++ * at least as of right now.
++ * If you change this structure, you must change the user-mode
++ * version in rte_mbuf.h
++ */
+ struct rte_mbuf {
+ MARKER cacheline0;
+
+@@ -786,6 +792,12 @@ struct rte_mbuf {
+ uint32_t pkt_len; /**< Total pkt len: sum of all segments. */
+ uint16_t data_len; /**< Amount of data in segment buffer. */
+ uint16_t vlan_tci; /**< VLAN Tag Control Identifier (CPU order) */
++ uint32_t seqn; /**< Sequence number. See also rte_reorder_insert() */
++ uint16_t vlan_tci_outer; /**< Outer VLAN Tag Control Identifier (CPU order) */
++ struct rte_mbuf *next; /**< Next segment of scattered packet. */
++
++ /* second cache line - fields only used in slow path or on TX */
++ MARKER cacheline1 __rte_cache_aligned;
+
+ union {
+ uint32_t rss; /**< RSS hash result if RSS enabled */
+@@ -809,20 +821,12 @@ struct rte_mbuf {
+ uint32_t usr; /**< User defined tags. See rte_distributor_process() */
+ } hash; /**< hash information */
+
+- uint32_t seqn; /**< Sequence number. See also rte_reorder_insert() */
+-
+- uint16_t vlan_tci_outer; /**< Outer VLAN Tag Control Identifier (CPU order) */
+-
+- /* second cache line - fields only used in slow path or on TX */
+- MARKER cacheline1 __rte_cache_aligned;
+-
+ union {
+ void *userdata; /**< Can be used for external metadata */
+ uint64_t udata64; /**< Allow 8-byte userdata on 32-bit */
+ };
+
+ struct rte_mempool *pool; /**< Pool from which mbuf was allocated. */
+- struct rte_mbuf *next; /**< Next segment of scattered packet. */
+
+ /* fields to support TX offloads */
+ union {
+--
+2.5.0
+