Adding upstream version 252.22.upstream/252.22

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 290 insertions, 0 deletions

diff --git a/src/network/netdev/bridge.c b/src/network/netdev/bridge.c
new file mode 100644
index 0000000..b65c3b4
--- /dev/null
+++ b/src/network/netdev/bridge.c
@@ -0,0 +1,290 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <net/if.h>
+#include <netinet/in.h>
+#include <linux/if_arp.h>
+#include <linux/if_bridge.h>
+
+#include "bridge.h"
+#include "netlink-util.h"
+#include "networkd-manager.h"
+#include "string-table.h"
+#include "vlan-util.h"
+
+assert_cc((int) MULTICAST_ROUTER_NONE            == (int) MDB_RTR_TYPE_DISABLED);
+assert_cc((int) MULTICAST_ROUTER_TEMPORARY_QUERY == (int) MDB_RTR_TYPE_TEMP_QUERY);
+assert_cc((int) MULTICAST_ROUTER_PERMANENT       == (int) MDB_RTR_TYPE_PERM);
+assert_cc((int) MULTICAST_ROUTER_TEMPORARY       == (int) MDB_RTR_TYPE_TEMP);
+
+static const char* const multicast_router_table[_MULTICAST_ROUTER_MAX] = {
+        [MULTICAST_ROUTER_NONE]            = "no",
+        [MULTICAST_ROUTER_TEMPORARY_QUERY] = "query",
+        [MULTICAST_ROUTER_PERMANENT]       = "permanent",
+        [MULTICAST_ROUTER_TEMPORARY]       = "temporary",
+};
+
+DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(multicast_router, MulticastRouter, _MULTICAST_ROUTER_INVALID);
+DEFINE_CONFIG_PARSE_ENUM(config_parse_multicast_router, multicast_router, MulticastRouter,
+                         "Failed to parse bridge multicast router setting");
+
+/* callback for bridge netdev's parameter set */
+static int netdev_bridge_set_handler(sd_netlink *rtnl, sd_netlink_message *m, NetDev *netdev) {
+        int r;
+
+        assert(netdev);
+        assert(m);
+
+        r = sd_netlink_message_get_errno(m);
+        if (r < 0) {
+                log_netdev_warning_errno(netdev, r, "Bridge parameters could not be set: %m");
+                return 1;
+        }
+
+        log_netdev_debug(netdev, "Bridge parameters set success");
+
+        return 1;
+}
+
+static int netdev_bridge_post_create_message(NetDev *netdev, sd_netlink_message *req) {
+        Bridge *b;
+        int r;
+
+        assert_se(b = BRIDGE(netdev));
+
+        r = sd_netlink_message_open_container(req, IFLA_LINKINFO);
+        if (r < 0)
+                return r;
+
+        r = sd_netlink_message_open_container_union(req, IFLA_INFO_DATA, netdev_kind_to_string(netdev->kind));
+        if (r < 0)
+                return r;
+
+        /* convert to jiffes */
+        if (b->forward_delay != USEC_INFINITY) {
+                r = sd_netlink_message_append_u32(req, IFLA_BR_FORWARD_DELAY, usec_to_jiffies(b->forward_delay));
+                if (r < 0)
+                        return r;
+        }
+
+        if (b->hello_time > 0) {
+                r = sd_netlink_message_append_u32(req, IFLA_BR_HELLO_TIME, usec_to_jiffies(b->hello_time));
+                if (r < 0)
+                        return r;
+        }
+
+        if (b->max_age > 0) {
+                r = sd_netlink_message_append_u32(req, IFLA_BR_MAX_AGE, usec_to_jiffies(b->max_age));
+                if (r < 0)
+                        return r;
+        }
+
+        if (b->ageing_time != USEC_INFINITY) {
+                r = sd_netlink_message_append_u32(req, IFLA_BR_AGEING_TIME, usec_to_jiffies(b->ageing_time));
+                if (r < 0)
+                        return r;
+        }
+
+        if (b->priority > 0) {
+                r = sd_netlink_message_append_u16(req, IFLA_BR_PRIORITY, b->priority);
+                if (r < 0)
+                        return r;
+        }
+
+        if (b->group_fwd_mask > 0) {
+                r = sd_netlink_message_append_u16(req, IFLA_BR_GROUP_FWD_MASK, b->group_fwd_mask);
+                if (r < 0)
+                        return r;
+        }
+
+        if (b->default_pvid != VLANID_INVALID) {
+                r = sd_netlink_message_append_u16(req, IFLA_BR_VLAN_DEFAULT_PVID, b->default_pvid);
+                if (r < 0)
+                        return r;
+        }
+
+        if (b->mcast_querier >= 0) {
+                r = sd_netlink_message_append_u8(req, IFLA_BR_MCAST_QUERIER, b->mcast_querier);
+                if (r < 0)
+                        return r;
+        }
+
+        if (b->mcast_snooping >= 0) {
+                r = sd_netlink_message_append_u8(req, IFLA_BR_MCAST_SNOOPING, b->mcast_snooping);
+                if (r < 0)
+                        return r;
+        }
+
+        if (b->vlan_filtering >= 0) {
+                r = sd_netlink_message_append_u8(req, IFLA_BR_VLAN_FILTERING, b->vlan_filtering);
+                if (r < 0)
+                        return r;
+        }
+
+        if (b->vlan_protocol >= 0) {
+                r = sd_netlink_message_append_u16(req, IFLA_BR_VLAN_PROTOCOL, htobe16(b->vlan_protocol));
+                if (r < 0)
+                        return r;
+        }
+
+        if (b->stp >= 0) {
+                r = sd_netlink_message_append_u32(req, IFLA_BR_STP_STATE, b->stp);
+                if (r < 0)
+                        return r;
+        }
+
+        if (b->igmp_version > 0) {
+                r = sd_netlink_message_append_u8(req, IFLA_BR_MCAST_IGMP_VERSION, b->igmp_version);
+                if (r < 0)
+                        return r;
+        }
+
+        r = sd_netlink_message_close_container(req);
+        if (r < 0)
+                return r;
+
+        r = sd_netlink_message_close_container(req);
+        if (r < 0)
+                return r;
+
+        return 0;
+}
+
+static int netdev_bridge_post_create(NetDev *netdev, Link *link) {
+        _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
+        int r;
+
+        assert(netdev);
+
+        r = sd_rtnl_message_new_link(netdev->manager->rtnl, &req, RTM_NEWLINK, netdev->ifindex);
+        if (r < 0)
+                return log_netdev_error_errno(netdev, r, "Could not allocate netlink message: %m");
+
+        r = sd_netlink_message_set_flags(req, NLM_F_REQUEST | NLM_F_ACK);
+        if (r < 0)
+                return log_link_error_errno(link, r, "Could not set netlink message flags: %m");
+
+        r = netdev_bridge_post_create_message(netdev, req);
+        if (r < 0)
+                return log_netdev_error_errno(netdev, r, "Could not create netlink message: %m");
+
+        r = netlink_call_async(netdev->manager->rtnl, NULL, req, netdev_bridge_set_handler,
+                               netdev_destroy_callback, netdev);
+        if (r < 0)
+                return log_netdev_error_errno(netdev, r, "Could not send netlink message: %m");
+
+        netdev_ref(netdev);
+
+        return r;
+}
+
+int config_parse_bridge_igmp_version(
+                const char *unit,
+                const char *filename,
+                unsigned line,
+                const char *section,
+                unsigned section_line,
+                const char *lvalue,
+                int ltype,
+                const char *rvalue,
+                void *data,
+                void *userdata) {
+
+        Bridge *b = userdata;
+        uint8_t u;
+        int r;
+
+        assert(filename);
+        assert(lvalue);
+        assert(rvalue);
+        assert(data);
+
+        if (isempty(rvalue)) {
+                b->igmp_version = 0; /* 0 means unset. */
+                return 0;
+        }
+
+        r = safe_atou8(rvalue, &u);
+        if (r < 0) {
+                log_syntax(unit, LOG_WARNING, filename, line, r,
+                           "Failed to parse bridge's multicast IGMP version number '%s', ignoring assignment: %m",
+                           rvalue);
+                return 0;
+        }
+        if (!IN_SET(u, 2, 3)) {
+                log_syntax(unit, LOG_WARNING, filename, line, 0,
+                           "Invalid bridge's multicast IGMP version number '%s', ignoring assignment.", rvalue);
+                return 0;
+        }
+
+        b->igmp_version = u;
+
+        return 0;
+}
+
+int config_parse_bridge_port_priority(
+                const char *unit,
+                const char *filename,
+                unsigned line,
+                const char *section,
+                unsigned section_line,
+                const char *lvalue,
+                int ltype,
+                const char *rvalue,
+                void *data,
+                void *userdata) {
+
+        uint16_t i;
+        int r;
+
+        assert(filename);
+        assert(lvalue);
+        assert(rvalue);
+        assert(data);
+
+        /* This is used in networkd-network-gperf.gperf. */
+
+        r = safe_atou16(rvalue, &i);
+        if (r < 0) {
+                log_syntax(unit, LOG_WARNING, filename, line, r,
+                           "Failed to parse bridge port priority, ignoring: %s", rvalue);
+                return 0;
+        }
+
+        if (i > LINK_BRIDGE_PORT_PRIORITY_MAX) {
+                log_syntax(unit, LOG_WARNING, filename, line, 0,
+                           "Bridge port priority is larger than maximum %u, ignoring: %s",
+                           LINK_BRIDGE_PORT_PRIORITY_MAX, rvalue);
+                return 0;
+        }
+
+        *((uint16_t *)data) = i;
+
+        return 0;
+}
+
+static void bridge_init(NetDev *n) {
+        Bridge *b;
+
+        b = BRIDGE(n);
+
+        assert(b);
+
+        b->mcast_querier = -1;
+        b->mcast_snooping = -1;
+        b->vlan_filtering = -1;
+        b->vlan_protocol = -1;
+        b->stp = -1;
+        b->default_pvid = VLANID_INVALID;
+        b->forward_delay = USEC_INFINITY;
+        b->ageing_time = USEC_INFINITY;
+}
+
+const NetDevVTable bridge_vtable = {
+        .object_size = sizeof(Bridge),
+        .init = bridge_init,
+        .sections = NETDEV_COMMON_SECTIONS "Bridge\0",
+        .post_create = netdev_bridge_post_create,
+        .create_type = NETDEV_CREATE_INDEPENDENT,
+        .iftype = ARPHRD_ETHER,
+        .generate_mac = true,
+};