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authorFlorin Coras <fcoras@cisco.com>2021-01-06 17:35:17 -0800
committerDave Wallace <dwallacelf@gmail.com>2021-05-25 21:18:54 +0000
commit6621abf49aec6d764e654316ff75274c75d4c1a1 (patch)
tree918ce456d904d3cf192e8f79ba6b8c6609f7129d /src/plugins/srtp/srtp.h
parent6bb77dec7074e6b7b27d6bc94238bcddda375a66 (diff)
srtp: basic implementation based on libsrtp2
Type: feature Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Ic5e99938a5f130e83de6d590d2f89252d055bceb
Diffstat (limited to 'src/plugins/srtp/srtp.h')
-rw-r--r--src/plugins/srtp/srtp.h120
1 files changed, 120 insertions, 0 deletions
diff --git a/src/plugins/srtp/srtp.h b/src/plugins/srtp/srtp.h
new file mode 100644
index 00000000000..16475b0bd2f
--- /dev/null
+++ b/src/plugins/srtp/srtp.h
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2021 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.
+ */
+
+#include <vnet/plugin/plugin.h>
+#include <vpp/app/version.h>
+
+#include <vnet/session/application_interface.h>
+#include <vnet/session/application.h>
+
+#include <srtp2/srtp.h>
+
+#ifndef SRC_PLUGINS_SRTP_SRTP_H_
+#define SRC_PLUGINS_SRTP_SRTP_H_
+
+#define SRTP_DEBUG 0
+
+#if SRTP_DEBUG
+#define SRTP_DBG(_lvl, _fmt, _args...) \
+ if (_lvl <= SRTP_DEBUG) \
+ clib_warning (_fmt, ##_args)
+#else
+#define SRTP_DBG(_lvl, _fmt, _args...)
+#endif
+
+typedef struct srtp_cxt_id_
+{
+ union
+ {
+ session_handle_t app_session_handle;
+ u32 parent_app_api_ctx;
+ };
+ session_handle_t srtp_session_handle;
+ u32 parent_app_wrk_index;
+ u32 srtp_ctx;
+ u32 listener_ctx_index;
+ u8 udp_is_ip4;
+} srtp_ctx_id_t;
+
+STATIC_ASSERT (sizeof (srtp_ctx_id_t) <= TRANSPORT_CONN_ID_LEN,
+ "ctx id must be less than TRANSPORT_CONN_ID_LEN");
+
+#define SRTP_MAX_KEYLEN 46 /**< libsrtp AES 256 key len with salt */
+
+typedef struct transport_endpt_cfg_srtp_policy
+{
+ u32 ssrc_type;
+ u32 ssrc_value;
+ u32 window_size;
+ u8 allow_repeat_tx;
+ u8 key_len;
+ u8 key[SRTP_MAX_KEYLEN];
+} transport_endpt_cfg_srtp_policy_t;
+
+typedef struct transport_endpt_cfg_srtp
+{
+ transport_endpt_cfg_srtp_policy_t policies[2];
+} transport_endpt_cfg_srtp_t;
+
+typedef struct srtp_ctx_
+{
+ union
+ {
+ transport_connection_t connection;
+ srtp_ctx_id_t c_srtp_ctx_id;
+ };
+#define parent_app_wrk_index c_srtp_ctx_id.parent_app_wrk_index
+#define app_session_handle c_srtp_ctx_id.app_session_handle
+#define srtp_session_handle c_srtp_ctx_id.srtp_session_handle
+#define listener_ctx_index c_srtp_ctx_id.listener_ctx_index
+#define udp_is_ip4 c_srtp_ctx_id.udp_is_ip4
+#define srtp_ctx_engine c_srtp_ctx_id.srtp_engine_id
+#define srtp_ssl_ctx c_srtp_ctx_id.ssl_ctx
+#define srtp_ctx_handle c_c_index
+ /* Temporary storage for session open opaque. Overwritten once
+ * underlying tcp connection is established */
+#define parent_app_api_context c_srtp_ctx_id.parent_app_api_ctx
+
+ u8 is_passive_close;
+ u8 resume;
+ u8 app_closed;
+ u8 no_app_session;
+ u8 is_migrated;
+ srtp_t srtp_ctx;
+ srtp_policy_t srtp_policy[2];
+} srtp_tc_t;
+
+typedef struct srtp_main_
+{
+ srtp_tc_t **ctx_pool;
+ srtp_tc_t *listener_ctx_pool;
+ u32 app_index;
+ clib_rwlock_t half_open_rwlock;
+ /*
+ * Config
+ */
+ u64 first_seg_size;
+ u32 fifo_size;
+} srtp_main_t;
+
+#endif /* SRC_PLUGINS_SRTP_SRTP_H_ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */