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authorRomain Forlot <romain.forlot@iot.bzh>2017-05-03 17:52:34 +0200
committerRomain Forlot <romain.forlot@iot.bzh>2017-05-03 17:52:34 +0200
commit71798df5325efe6005fb87dad8a3489e656021f0 (patch)
tree58cbafa903642012e5d4376de606ca786c885f23 /CAN-binder/low-can-binding/utils/socketcan-raw.cpp
parent82642e99f93cc62329f34a5f7b3656a5331f1c43 (diff)
Derivate socketcan to multiple child depending upon socket CAN type.
Use to initialize raw, bcm and later isotp socket. Now we should have, 1 BCM socket by signal to make filter on them. 1 raw socket by devices is kept to use diagnostic manager as is. Change-Id: Icb2daddf67039479f72bc487d53971adc9aba638 Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>
Diffstat (limited to 'CAN-binder/low-can-binding/utils/socketcan-raw.cpp')
-rw-r--r--CAN-binder/low-can-binding/utils/socketcan-raw.cpp73
1 files changed, 73 insertions, 0 deletions
diff --git a/CAN-binder/low-can-binding/utils/socketcan-raw.cpp b/CAN-binder/low-can-binding/utils/socketcan-raw.cpp
new file mode 100644
index 00000000..2c2b54e1
--- /dev/null
+++ b/CAN-binder/low-can-binding/utils/socketcan-raw.cpp
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2015, 2016 ,2017 "IoT.bzh"
+ * Author "Romain Forlot" <romain.forlot@iot.bzh>
+ * Author "Loïc Collignon" <loic.collignon@iot.bzh>
+ * 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 "socketcan-raw.hpp"
+
+namespace utils
+{
+ /// @brief Construct a default, invalid, socket.
+ socketcan_raw_t::socketcan_raw_t()
+ : socketcan_t{}, socket_{INVALID_SOCKET}
+ {}
+
+ /// @brief Construct a socket by moving an existing one.
+ socketcan_raw_t::socketcan_raw_t(socketcan_raw_t&& s)
+ : socket_{s.socket_}
+ {
+ s.socket_ = INVALID_SOCKET;
+ }
+
+ /// @brief Destruct the socket.
+ socketcan_raw_t::~socketcan_raw_t()
+ {
+ if(socket_ != INVALID_SOCKET)
+ ::close(socket_);
+ }
+
+ /// @brief Open a raw socket CAN.
+ /// @param[in] device_name is the kernel network device name of the CAN interface.
+ ///
+ /// @return Upon successful completion, shall return a non-negative integer, the socket file descriptor. Otherwise, a value of -1 shall be returned and errno set to indicate the error.
+ int socketcan_raw_t::open(std::string device_name)
+ {
+ close();
+
+ struct ifreq ifr;
+ socket_ = open(PF_CAN, SOCK_RAW, CAN_RAW);
+
+ // Attempts to open a socket to CAN bus
+ ::strcpy(ifr.ifr_name, device_name.c_str());
+ DEBUG(binder_interface, "%s: ifr_name is : %s", __FUNCTION__, ifr.ifr_name);
+ if(::ioctl(socket_, SIOCGIFINDEX, &ifr) < 0)
+ {
+ ERROR(binder_interface, "%s: ioctl failed. Error was : %s", __FUNCTION__, strerror(errno));
+ close();
+ }
+ else
+ {
+ tx_address_.can_family = AF_CAN;
+ tx_address_.can_ifindex = ifr.ifr_ifindex;
+
+ if(bind((struct sockaddr *)&tx_address_, sizeof(tx_address_)) < 0)
+ {
+ ERROR(binder_interface, "%s: Bind failed. %s", __FUNCTION__, strerror(errno));
+ close();
+ }
+ }
+ return socket_;
+ }
+} \ No newline at end of file