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Diffstat (limited to 'src/libcharon/plugins/kernel_netlink/kernel_netlink_shared.c')
-rw-r--r--src/libcharon/plugins/kernel_netlink/kernel_netlink_shared.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/src/libcharon/plugins/kernel_netlink/kernel_netlink_shared.c b/src/libcharon/plugins/kernel_netlink/kernel_netlink_shared.c
index 7165b655b..44609002f 100644
--- a/src/libcharon/plugins/kernel_netlink/kernel_netlink_shared.c
+++ b/src/libcharon/plugins/kernel_netlink/kernel_netlink_shared.c
@@ -15,6 +15,29 @@
* for more details.
*/
+/*
+ * Copyright (C) 2016 secunet Security Networks AG
+ * Copyright (C) 2016 Thomas Egerer
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
#include <sys/socket.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
@@ -557,6 +580,8 @@ netlink_socket_t *netlink_socket_create(int protocol, enum_name_t *names,
struct sockaddr_nl addr = {
.nl_family = AF_NETLINK,
};
+ bool force_buf = FALSE;
+ int rcvbuf_size = 0;
INIT(this,
.public = {
@@ -606,6 +631,25 @@ netlink_socket_t *netlink_socket_create(int protocol, enum_name_t *names,
destroy(this);
return NULL;
}
+ rcvbuf_size = lib->settings->get_int(lib->settings,
+ "%s.plugins.kernel-netlink.receive_buffer_size",
+ rcvbuf_size, lib->ns);
+ if (rcvbuf_size)
+ {
+ int optname;
+
+ force_buf = lib->settings->get_bool(lib->settings,
+ "%s.plugins.kernel-netlink.force_receive_buffer_size",
+ force_buf, lib->ns);
+ optname = force_buf ? SO_RCVBUFFORCE : SO_RCVBUF;
+
+ if (setsockopt(this->socket, SOL_SOCKET, optname, &rcvbuf_size,
+ sizeof(rcvbuf_size)) == -1)
+ {
+ DBG1(DBG_KNL, "failed to %supdate receive buffer size to %d: %s",
+ force_buf ? "forcibly " : "", rcvbuf_size, strerror(errno));
+ }
+ }
if (this->parallel)
{
lib->watcher->add(lib->watcher, this->socket, WATCHER_READ, watch, this);