VPP-598: tcp stack initial commit

Change-Id: I49e5ce0aae6e4ff634024387ceaf7dbc432a0351
Signed-off-by: Dave Barach <dave@barachs.net>
Signed-off-by: Florin Coras <fcoras@cisco.com>

1 files changed, 89 insertions, 0 deletions

diff --git a/src/svm/svm_fifo_segment.h b/src/svm/svm_fifo_segment.h
new file mode 100644
index 00000000000..793fa7c8a0e
--- /dev/null
+++ b/src/svm/svm_fifo_segment.h
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ * 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.
+ */
+#ifndef __included_ssvm_fifo_segment_h__
+#define __included_ssvm_fifo_segment_h__
+
+#include "svm_fifo.h"
+#include "ssvm.h"
+
+typedef struct
+{
+  volatile svm_fifo_t **fifos;
+  u8 *segment_name;
+} svm_fifo_segment_header_t;
+
+typedef struct
+{
+  ssvm_private_t ssvm;
+  svm_fifo_segment_header_t *h;
+} svm_fifo_segment_private_t;
+
+typedef struct
+{
+  /** pool of segments */
+  svm_fifo_segment_private_t *segments;
+  /* Where to put the next one */
+  u64 next_baseva;
+  u32 timeout_in_seconds;
+} svm_fifo_segment_main_t;
+
+extern svm_fifo_segment_main_t svm_fifo_segment_main;
+
+typedef struct
+{
+  char *segment_name;
+  u32 segment_size;
+  u32 new_segment_index;
+} svm_fifo_segment_create_args_t;
+
+static inline svm_fifo_segment_private_t *
+svm_fifo_get_segment (u32 segment_index)
+{
+  svm_fifo_segment_main_t *ssm = &svm_fifo_segment_main;
+  return vec_elt_at_index (ssm->segments, segment_index);
+}
+
+#define foreach_ssvm_fifo_segment_api_error             \
+_(OUT_OF_SPACE, "Out of space in segment", -200)
+
+typedef enum
+{
+#define _(n,s,c) SSVM_FIFO_SEGMENT_API_ERROR_##n = c,
+  foreach_ssvm_fifo_segment_api_error
+#undef _
+} ssvm_fifo_segment_api_error_enum_t;
+
+int svm_fifo_segment_create (svm_fifo_segment_create_args_t * a);
+int svm_fifo_segment_attach (svm_fifo_segment_create_args_t * a);
+void svm_fifo_segment_delete (svm_fifo_segment_private_t * s);
+
+svm_fifo_t *svm_fifo_segment_alloc_fifo (svm_fifo_segment_private_t * s,
+					 u32 data_size_in_bytes);
+void svm_fifo_segment_free_fifo (svm_fifo_segment_private_t * s,
+				 svm_fifo_t * f);
+
+void svm_fifo_segment_init (u64 baseva, u32 timeout_in_seconds);
+
+u32 svm_fifo_segment_index (svm_fifo_segment_private_t * s);
+
+#endif /* __included_ssvm_fifo_segment_h__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */