int br_vlan_configure(Link *link, uint16_t pvid, uint32_t *br_vid_bitmap, uint32_t *br_untagged_bitmap) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
int r;
uint16_t flags;
sd_netlink *rtnl;
assert(link);
assert(link->manager);
assert(br_vid_bitmap);
assert(br_untagged_bitmap);
assert(link->network);
/* pvid might not be in br_vid_bitmap yet */
if (pvid)
set_bit(pvid, br_vid_bitmap);
rtnl = link->manager->rtnl;
/* create new RTM message */
r = sd_rtnl_message_new_link(rtnl, &req, RTM_SETLINK, link->ifindex);
if (r < 0)
return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m");
r = sd_rtnl_message_link_set_family(req, PF_BRIDGE);
if (r < 0)
return log_link_error_errno(link, r, "Could not set message family: %m");
r = sd_netlink_message_open_container(req, IFLA_AF_SPEC);
if (r < 0)
return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m");
/* master needs flag self */
if (!link->network->bridge) {
flags = BRIDGE_FLAGS_SELF;
sd_netlink_message_append_data(req, IFLA_BRIDGE_FLAGS, &flags, sizeof(uint16_t));
}
/* add vlan info */
r = append_vlan_info_data(link, req, pvid, br_vid_bitmap, br_untagged_bitmap);
if (r < 0)
return log_link_error_errno(link, r, "Could not append VLANs: %m");
r = sd_netlink_message_close_container(req);
if (r < 0)
return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m");
/* send message to the kernel */
r = netlink_call_async(rtnl, NULL, req, set_brvlan_handler,
link_netlink_destroy_callback, link);
if (r < 0)
return log_link_error_errno(link, r, "Could not send rtnetlink message: %m");
link_ref(link);
return 0;
}
static void test_message_link_bridge(sd_rtnl *rtnl) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *message = NULL;
uint32_t cost;
assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_NEWLINK, 1) >= 0);
assert_se(sd_rtnl_message_link_set_family(message, PF_BRIDGE) >= 0);
assert_se(sd_rtnl_message_open_container(message, IFLA_PROTINFO) >= 0);
assert_se(sd_rtnl_message_append_u32(message, IFLA_BRPORT_COST, 10) >= 0);
assert_se(sd_rtnl_message_close_container(message) >= 0);
assert_se(sd_rtnl_message_rewind(message) >= 0);
assert_se(sd_rtnl_message_enter_container(message, IFLA_PROTINFO) >= 0);
assert_se(sd_rtnl_message_read_u32(message, IFLA_BRPORT_COST, &cost) >= 0);
assert_se(cost == 10);
assert_se(sd_rtnl_message_exit_container(message) >= 0);
}
