diff options
| -rw-r--r-- | conf/plugins/kernel-netlink.opt | 2 | ||||
| -rw-r--r-- | src/libhydra/plugins/kernel_netlink/kernel_netlink_shared.c | 12 |
2 files changed, 12 insertions, 2 deletions
diff --git a/conf/plugins/kernel-netlink.opt b/conf/plugins/kernel-netlink.opt index 4338a5fbd..6adefd8de 100644 --- a/conf/plugins/kernel-netlink.opt +++ b/conf/plugins/kernel-netlink.opt @@ -1,4 +1,4 @@ -charon.plugins.kernel-netlink.buflen = 4096 +charon.plugins.kernel-netlink.buflen = <min(PAGE_SIZE, 8192)> Buffer size for received Netlink messages. charon.plugins.kernel-netlink.fwmark = diff --git a/src/libhydra/plugins/kernel_netlink/kernel_netlink_shared.c b/src/libhydra/plugins/kernel_netlink/kernel_netlink_shared.c index 238de82b3..f7ce992a3 100644 --- a/src/libhydra/plugins/kernel_netlink/kernel_netlink_shared.c +++ b/src/libhydra/plugins/kernel_netlink/kernel_netlink_shared.c @@ -571,7 +571,7 @@ netlink_socket_t *netlink_socket_create(int protocol, enum_name_t *names, .protocol = protocol, .names = names, .buflen = lib->settings->get_int(lib->settings, - "%s.plugins.kernel-netlink.buflen", 4096, lib->ns), + "%s.plugins.kernel-netlink.buflen", 0, lib->ns), .timeout = lib->settings->get_int(lib->settings, "%s.plugins.kernel-netlink.timeout", 0, lib->ns), .retries = lib->settings->get_int(lib->settings, @@ -582,6 +582,16 @@ 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"); |