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kernel-netlink: Use larger buffer for event messages

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This commit is contained in:
Tobias Brunner
2018-08-31 12:15:12 +02:00
parent 9de3140dbf
commit c5b94b2483
4 changed files with 35 additions and 16 deletions
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src/libcharon/plugins/kernel_netlink/kernel_netlink_shared.c
+26 -14
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@@ -587,8 +587,31 @@ METHOD(netlink_socket_t, destroy, void,
free(this);
}
/**
* Described in header.
/*
* Described in header
*/
u_int netlink_get_buflen()
{
u_int buflen;
buflen = lib->settings->get_int(lib->settings,
"%s.plugins.kernel-netlink.buflen", 0, lib->ns);
if (!buflen)
{
long pagesize = sysconf(_SC_PAGESIZE);
if (pagesize == -1)
{
pagesize = 4096;
}
/* base this on NLMSG_GOODSIZE */
buflen = min(pagesize, 8192);
}
return buflen;
}
/*
* Described in header
*/
netlink_socket_t *netlink_socket_create(int protocol, enum_name_t *names,
bool parallel)
@@ -612,8 +635,7 @@ netlink_socket_t *netlink_socket_create(int protocol, enum_name_t *names,
.entries = hashtable_create(hashtable_hash_ptr, hashtable_equals_ptr, 4),
.protocol = protocol,
.names = names,
.buflen = lib->settings->get_int(lib->settings,
"%s.plugins.kernel-netlink.buflen", 0, lib->ns),
.buflen = netlink_get_buflen(),
.timeout = lib->settings->get_int(lib->settings,
"%s.plugins.kernel-netlink.timeout", 0, lib->ns),
.retries = lib->settings->get_int(lib->settings,
@@ -624,16 +646,6 @@ netlink_socket_t *netlink_socket_create(int protocol, enum_name_t *names,
.parallel = parallel,
);
if (!this->buflen)
{
long pagesize = sysconf(_SC_PAGESIZE);
if (pagesize == -1)
{
pagesize = 4096;
}
/* base this on NLMSG_GOODSIZE */
this->buflen = min(pagesize, 8192);
}
if (this->socket == -1)
{
DBG1(DBG_KNL, "unable to create netlink socket: %s (%d)",