[systemd-devel] [PATCH 1/1] sd-rtnl: add support for tunnel attributes
Tom Gundersen
teg at jklm.no
Tue Mar 25 07:20:46 PDT 2014
On Tue, Mar 25, 2014 at 9:43 AM, Susant Sahani <susant at redhat.com> wrote:
> Added support for tunneling netlink attrributes (ipip, gre, sit).
> These works with kernel module ipip, gre and sit . The test cases are
> moved to a separate file and manual test as well because they require
> respective kernel modules as well.
Applied. Thanks!
Cheers,
Tom
> ---
> Makefile.am | 11 ++-
> src/libsystemd/sd-rtnl/rtnl-message.c | 37 +++++++-
> src/test/test-rtnl-manual.c | 154 ++++++++++++++++++++++++++++++++++
> 3 files changed, 197 insertions(+), 5 deletions(-)
> create mode 100644 src/test/test-rtnl-manual.c
>
> diff --git a/Makefile.am b/Makefile.am
> index 2cb0f2a..27c7685 100644
> --- a/Makefile.am
> +++ b/Makefile.am
> @@ -1175,7 +1175,8 @@ manual_tests += \
> test-install \
> test-watchdog \
> test-log \
> - test-ipcrm
> + test-ipcrm \
> + test-rtnl-manual
>
> tests += \
> test-job-type \
> @@ -1398,6 +1399,14 @@ test_ipcrm_LDADD = \
> libsystemd-shared.la \
> -lrt
>
> +test_rtnl_manual_SOURCES = \
> + src/test/test-rtnl-manual.c
> +
> +test_rtnl_manual_LDADD = \
> + libsystemd-internal.la \
> + libsystemd-shared.la \
> + -lkmod
> +
> test_ellipsize_SOURCES = \
> src/test/test-ellipsize.c
>
> diff --git a/src/libsystemd/sd-rtnl/rtnl-message.c b/src/libsystemd/sd-rtnl/rtnl-message.c
> index 652dc6e..ff09051 100644
> --- a/src/libsystemd/sd-rtnl/rtnl-message.c
> +++ b/src/libsystemd/sd-rtnl/rtnl-message.c
> @@ -24,6 +24,9 @@
> #include <stdbool.h>
> #include <unistd.h>
> #include <linux/veth.h>
> +#include <linux/if.h>
> +#include <linux/ip.h>
> +#include <linux/if_tunnel.h>
> #include <linux/if_bridge.h>
>
> #include "util.h"
> @@ -456,6 +459,12 @@ int sd_rtnl_message_append_u8(sd_rtnl_message *m, unsigned short type, uint8_t d
> case IFLA_CARRIER:
> case IFLA_OPERSTATE:
> case IFLA_LINKMODE:
> + case IFLA_IPTUN_TTL:
> + case IFLA_IPTUN_TOS:
> + case IFLA_IPTUN_PROTO:
> + case IFLA_IPTUN_PMTUDISC:
> + case IFLA_IPTUN_ENCAP_LIMIT:
> + case IFLA_GRE_TTL:
> break;
> default:
> return -ENOTSUP;
> @@ -493,12 +502,22 @@ int sd_rtnl_message_append_u16(sd_rtnl_message *m, unsigned short type, uint16_t
> case RTM_DELLINK:
> if (m->n_containers == 2 &&
> GET_CONTAINER(m, 0)->rta_type == IFLA_LINKINFO &&
> - GET_CONTAINER(m, 1)->rta_type == IFLA_INFO_DATA &&
> - type == IFLA_VLAN_ID)
> - break;
> - else
> + GET_CONTAINER(m, 1)->rta_type == IFLA_INFO_DATA) {
> + switch (type) {
> + case IFLA_VLAN_ID:
> + case IFLA_IPTUN_FLAGS:
> + case IFLA_GRE_IFLAGS:
> + case IFLA_GRE_OFLAGS:
> + case IFLA_IPTUN_6RD_PREFIXLEN:
> + case IFLA_IPTUN_6RD_RELAY_PREFIXLEN:
> + break;
> + default:
> + return -ENOTSUP;
> + }
> + } else
> return -ENOTSUP;
>
> + break;
> default:
> return -ENOTSUP;
> }
> @@ -539,7 +558,12 @@ int sd_rtnl_message_append_u32(sd_rtnl_message *m, unsigned short type, uint32_t
> case IFLA_PROMISCUITY:
> case IFLA_NUM_TX_QUEUES:
> case IFLA_NUM_RX_QUEUES:
> + case IFLA_IPTUN_LOCAL:
> + case IFLA_IPTUN_REMOTE:
> case IFLA_MACVLAN_MODE:
> + case IFLA_IPTUN_FLAGS:
> + case IFLA_IPTUN_FLOWINFO:
> + case IFLA_GRE_FLOWINFO:
> break;
> default:
> return -ENOTSUP;
> @@ -594,6 +618,8 @@ int sd_rtnl_message_append_in_addr(sd_rtnl_message *m, unsigned short type, cons
> case IFA_LOCAL:
> case IFA_BROADCAST:
> case IFA_ANYCAST:
> + case IFLA_GRE_LOCAL:
> + case IFLA_GRE_REMOTE:
> ifa = NLMSG_DATA(m->hdr);
>
> if (ifa->ifa_family != AF_INET)
> @@ -656,6 +682,9 @@ int sd_rtnl_message_append_in6_addr(sd_rtnl_message *m, unsigned short type, con
> case IFA_LOCAL:
> case IFA_BROADCAST:
> case IFA_ANYCAST:
> + case IFLA_GRE_LOCAL:
> + case IFLA_GRE_REMOTE:
> + case IFLA_IPTUN_6RD_PREFIX:
> ifa = NLMSG_DATA(m->hdr);
>
> if (ifa->ifa_family != AF_INET6)
> diff --git a/src/test/test-rtnl-manual.c b/src/test/test-rtnl-manual.c
> new file mode 100644
> index 0000000..e76fb81
> --- /dev/null
> +++ b/src/test/test-rtnl-manual.c
> @@ -0,0 +1,154 @@
> +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
> +
> +/***
> + This file is part of systemd.
> +
> + Copyright 2014 Susant Sahani
> +
> + systemd is free software; you can redistribute it and/or modify it
> + under the terms of the GNU Lesser General Public License as published by
> + the Free Software Foundation; either version 2.1 of the License, or
> + (at your option) any later version.
> +
> + systemd is distributed in the hope that it will be useful, but
> + WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public License
> + along with systemd; If not, see <http://www.gnu.org/licenses/>.
> +***/
> +
> +#include <netinet/ether.h>
> +#include <arpa/inet.h>
> +#include <net/if.h>
> +#include <linux/ip.h>
> +#include <linux/if_tunnel.h>
> +#include <libkmod.h>
> +
> +#include "util.h"
> +#include "macro.h"
> +#include "sd-rtnl.h"
> +#include "socket-util.h"
> +#include "rtnl-util.h"
> +#include "event-util.h"
> +#include "rtnl-internal.h"
> +
> +static int load_module(const char *mod_name) {
> + struct kmod_ctx *ctx;
> + struct kmod_list *list = NULL, *l;
> + int r;
> +
> + ctx = kmod_new(NULL, NULL);
> + if (!ctx) {
> + kmod_unref(ctx);
> + return -ENOMEM;
> + }
> +
> + r = kmod_module_new_from_lookup(ctx, mod_name, &list);
> + if (r < 0)
> + return -1;
> +
> + kmod_list_foreach(l, list) {
> + struct kmod_module *mod = kmod_module_get_module(l);
> +
> + r = kmod_module_probe_insert_module(mod, 0, NULL, NULL, NULL, NULL);
> + if (r >= 0)
> + r = 0;
> + else
> + r = -1;
> +
> + kmod_module_unref(mod);
> + }
> +
> + kmod_module_unref_list(list);
> + kmod_unref(ctx);
> +
> + return r;
> +}
> +
> +static int test_tunnel_configure(sd_rtnl *rtnl) {
> + int r;
> + sd_rtnl_message *m, *n;
> + struct in_addr local, remote;
> +
> + /* skip test if module cannot be loaded */
> + r = load_module("ipip");
> + if(r < 0)
> + return EXIT_TEST_SKIP;
> +
> + if(getuid() != 0)
> + return EXIT_TEST_SKIP;
> +
> + /* IPIP tunnel */
> + assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_NEWLINK, 0) >= 0);
> + assert_se(m);
> +
> + assert_se(sd_rtnl_message_append_string(m, IFLA_IFNAME, "eth0") >= 0);
> + assert_se(sd_rtnl_message_append_u32(m, IFLA_MTU, 1234)>= 0);
> +
> + assert_se(sd_rtnl_message_open_container(m, IFLA_LINKINFO) >= 0);
> + assert_se(sd_rtnl_message_append_string(m, IFLA_INFO_KIND, "ipip") >= 0);
> +
> + assert_se(sd_rtnl_message_open_container(m, IFLA_INFO_DATA) >= 0);
> +
> + inet_pton(AF_INET, "192.168.21.1", &local.s_addr);
> + assert_se(sd_rtnl_message_append_u32(m, IFLA_IPTUN_LOCAL, local.s_addr) >= 0);
> +
> + inet_pton(AF_INET, "192.168.21.2", &remote.s_addr);
> + assert_se(sd_rtnl_message_append_u32(m, IFLA_IPTUN_REMOTE, remote.s_addr) >= 0);
> +
> + assert_se(sd_rtnl_message_close_container(m) >= 0);
> + assert_se(sd_rtnl_message_close_container(m) >= 0);
> +
> + assert_se(sd_rtnl_call(rtnl, m, -1, 0) == 1);
> +
> + assert_se((m = sd_rtnl_message_unref(m)) == NULL);
> +
> + r = load_module("sit");
> + if(r < 0)
> + return EXIT_TEST_SKIP;
> +
> + /* sit */
> + assert_se(sd_rtnl_message_new_link(rtnl, &n, RTM_NEWLINK, 0) >= 0);
> + assert_se(n);
> +
> + assert_se(sd_rtnl_message_append_string(n, IFLA_IFNAME, "eth1") >= 0);
> + assert_se(sd_rtnl_message_append_u32(n, IFLA_MTU, 1234)>= 0);
> +
> + assert_se(sd_rtnl_message_open_container(n, IFLA_LINKINFO) >= 0);
> + assert_se(sd_rtnl_message_append_string(n, IFLA_INFO_KIND, "sit") >= 0);
> +
> + assert_se(sd_rtnl_message_open_container(n, IFLA_INFO_DATA) >= 0);
> +
> + assert_se(sd_rtnl_message_append_u8(n, IFLA_IPTUN_PROTO, IPPROTO_IPIP) >= 0);
> +
> + inet_pton(AF_INET, "192.168.21.3", &local.s_addr);
> + assert_se(sd_rtnl_message_append_u32(n, IFLA_IPTUN_LOCAL, local.s_addr) >= 0);
> +
> + inet_pton(AF_INET, "192.168.21.4", &remote.s_addr);
> + assert_se(sd_rtnl_message_append_u32(n, IFLA_IPTUN_REMOTE, remote.s_addr) >= 0);
> +
> + assert_se(sd_rtnl_message_close_container(n) >= 0);
> + assert_se(sd_rtnl_message_close_container(n) >= 0);
> +
> + assert_se(sd_rtnl_call(rtnl, n, -1, 0) == 1);
> +
> + assert_se((m = sd_rtnl_message_unref(n)) == NULL);
> +
> + return EXIT_SUCCESS;
> +}
> +
> +int main(int argc, char *argv[]) {
> + sd_rtnl *rtnl;
> + int r;
> +
> + assert_se(sd_rtnl_open(&rtnl, 0) >= 0);
> + assert_se(rtnl);
> +
> + r = test_tunnel_configure(rtnl);
> +
> + assert_se((rtnl = sd_rtnl_unref(rtnl)) == NULL);
> +
> + return r;
> +}
> --
> 1.8.5.3
>
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