dpif_packet: Rename to dp_packet

dp_packet is short and better name for datapath packet
structure.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>

1 files changed, 71 insertions, 0 deletions

diff --git a/lib/dp-packet.c b/lib/dp-packet.c
new file mode 100644
index 000000000..d77f8e4c9
--- /dev/null
+++ b/lib/dp-packet.c
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2014 Nicira, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <config.h>
+#include "dp-packet.h"
+
+#include "ofpbuf.h"
+
+struct dp_packet *
+dp_packet_new_with_headroom(size_t size, size_t headroom)
+{
+    struct dp_packet *p = xmalloc(sizeof *p);
+    struct ofpbuf *b = &p->ofpbuf;
+
+    ofpbuf_init(b, size + headroom);
+    ofpbuf_reserve(b, headroom);
+    p->md = PKT_METADATA_INITIALIZER(0);
+
+    return p;
+}
+
+struct dp_packet *
+dp_packet_clone_from_ofpbuf(const struct ofpbuf *b)
+{
+    struct dp_packet *p = xmalloc(sizeof *p);
+    size_t headroom = ofpbuf_headroom(b);
+
+    ofpbuf_init(&p->ofpbuf, ofpbuf_size(b) + headroom);
+    p->md = PKT_METADATA_INITIALIZER(0);
+    ofpbuf_reserve(&p->ofpbuf, headroom);
+
+    ofpbuf_put(&p->ofpbuf, ofpbuf_data(b), ofpbuf_size(b));
+
+    if (b->frame) {
+        uintptr_t data_delta
+            = (char *)ofpbuf_data(&p->ofpbuf) - (char *)ofpbuf_data(b);
+
+        p->ofpbuf.frame = (char *) b->frame + data_delta;
+    }
+    p->ofpbuf.l2_5_ofs = b->l2_5_ofs;
+    p->ofpbuf.l3_ofs = b->l3_ofs;
+    p->ofpbuf.l4_ofs = b->l4_ofs;
+
+    return p;
+}
+
+struct dp_packet *
+dp_packet_clone(struct dp_packet *p)
+{
+    struct dp_packet *newp;
+
+    newp = dp_packet_clone_from_ofpbuf(&p->ofpbuf);
+    memcpy(&newp->md, &p->md, sizeof p->md);
+
+    dp_packet_set_dp_hash(newp, dp_packet_get_dp_hash(p));
+
+    return newp;
+}