/* Change state and parameters on port. */
int br_setlink(struct net_device *dev, struct nlmsghdr *nlh)
{
struct ifinfomsg *ifm;
struct nlattr *protinfo;
struct nlattr *afspec;
struct net_bridge_port *p;
struct nlattr *tb[IFLA_BRPORT_MAX + 1];
int err;
ifm = nlmsg_data(nlh);
protinfo = nlmsg_find_attr(nlh, sizeof(*ifm), IFLA_PROTINFO);
afspec = nlmsg_find_attr(nlh, sizeof(*ifm), IFLA_AF_SPEC);
if (!protinfo && !afspec)
return 0;
p = br_port_get_rtnl(dev);
/* We want to accept dev as bridge itself if the AF_SPEC
* is set to see if someone is setting vlan info on the brigde
*/
if (!p && ((dev->priv_flags & IFF_EBRIDGE) && !afspec))
return -EINVAL;
if (p && protinfo) {
if (protinfo->nla_type & NLA_F_NESTED) {
err = nla_parse_nested(tb, IFLA_BRPORT_MAX,
protinfo, ifla_brport_policy);
if (err)
return err;
spin_lock_bh(&p->br->lock);
err = br_setport(p, tb);
spin_unlock_bh(&p->br->lock);
} else {
/* Binary compatability with old RSTP */
if (nla_len(protinfo) < sizeof(u8))
return -EINVAL;
spin_lock_bh(&p->br->lock);
err = br_set_port_state(p, nla_get_u8(protinfo));
spin_unlock_bh(&p->br->lock);
}
if (err)
goto out;
}
if (afspec) {
err = br_afspec((struct net_bridge *)netdev_priv(dev), p,
afspec, RTM_SETLINK);
}
if (err == 0)
br_ifinfo_notify(RTM_NEWLINK, p);
out:
return err;
}
int handle_immigration_request(struct nl_msg *req_msg) {
struct nl_msg *msg = NULL;
struct nlattr *nla;
int ret = 0;
int seq;
struct internal_state* state = get_current_state();
// In params
int uid;
int slot_index;
char* name;
// Out params
int accept = 1;
seq = nlmsg_hdr(req_msg)->nlmsg_seq;
nla = nlmsg_find_attr(nlmsg_hdr(req_msg), sizeof(struct genlmsghdr), DIRECTOR_A_UID);
if (nla == NULL)
return -EBADMSG;
uid = nla_get_u32(nla);
nla = nlmsg_find_attr(nlmsg_hdr(req_msg), sizeof(struct genlmsghdr), DIRECTOR_A_INDEX);
if (nla == NULL)
return -EBADMSG;
slot_index = nla_get_u32(nla);
nla = nlmsg_find_attr(nlmsg_hdr(req_msg), sizeof(struct genlmsghdr), DIRECTOR_A_NAME);
if (nla == NULL)
return -EBADMSG;
//name = nl_data_get(nla_get_data(nla));
name = nla_data(nla);
//printf("NPM CALLED FOR NAME: %s\n", name);
if ( immigration_request_callback )
immigration_request_callback(uid, slot_index, name, &accept);
if ( (ret=prepare_response_message(state->handle, DIRECTOR_IMMIGRATION_REQUEST_RESPONSE, state->gnl_fid, seq, &msg) ) != 0 ) {
goto done;
}
ret = nla_put_u32(msg,
DIRECTOR_A_DECISION,
accept);
if (ret != 0)
goto error_del_resp;
ret = send_request_message(state->handle, msg, 0);
goto done;
error_del_resp:
nlmsg_free(msg);
done:
return ret;
}
int handle_task_exitted(struct nl_msg *req_msg) {
struct nl_msg *msg = NULL;
struct nlattr *nla;
int ret = 0;
int seq;
struct internal_state* state = get_current_state();
struct rusage *rusage;
// In params
pid_t pid;
int exit_code;
seq = nlmsg_hdr(req_msg)->nlmsg_seq;
nla = nlmsg_find_attr(nlmsg_hdr(req_msg), sizeof(struct genlmsghdr), DIRECTOR_A_PID);
if (nla == NULL)
return -EBADMSG;
pid = nla_get_u32(nla);
nla = nlmsg_find_attr(nlmsg_hdr(req_msg), sizeof(struct genlmsghdr), DIRECTOR_A_EXIT_CODE);
if (nla == NULL)
return -EBADMSG;
exit_code = nla_get_u32(nla);
nla = nlmsg_find_attr(nlmsg_hdr(req_msg), sizeof(struct genlmsghdr), DIRECTOR_A_RUSAGE);
if (nla == NULL)
return -EBADMSG;
//rusage = nl_data_get(nla_get_data(nla));
rusage = nla_data(nla);
if ( task_exitted_callback )
task_exitted_callback(pid, exit_code, rusage);
if ( (ret=prepare_response_message(state->sk, DIRECTOR_ACK, state->gnl_fid, seq, &msg) ) != 0 ) {
goto done;
}
if (ret != 0)
goto error_del_resp;
ret = send_request_message(state->sk, msg, 0);
goto done;
error_del_resp:
nlmsg_free(msg);
done:
return ret;
}
static void
ind_ovs_handle_packet_miss(struct ind_ovs_upcall_thread *thread,
struct ind_ovs_port *port,
struct nl_msg *msg, struct nlattr **attrs)
{
struct nlmsghdr *nlh = nlmsg_hdr(msg);
struct genlmsghdr *gnlh = (void *)(nlh + 1);
struct nlattr *key = attrs[OVS_PACKET_ATTR_KEY];
struct nlattr *packet = attrs[OVS_PACKET_ATTR_PACKET];
assert(key && packet);
struct ind_ovs_parsed_key pkey;
ind_ovs_parse_key(key, &pkey);
/* Lookup the flow in the userspace flowtable. */
struct ind_ovs_flow *flow;
if (ind_ovs_lookup_flow(&pkey, &flow) != 0) {
ind_ovs_upcall_request_pktin(pkey.in_port, port, packet, key, OF_PACKET_IN_REASON_NO_MATCH);
return;
}
/* Reuse the incoming message for the packet execute */
gnlh->cmd = OVS_PACKET_CMD_EXECUTE;
ind_ovs_translate_actions(&pkey, flow->of_list_action,
msg, OVS_PACKET_ATTR_ACTIONS);
__sync_fetch_and_add(&flow->packets, 1);
__sync_fetch_and_add(&flow->bytes, nla_len(packet));
/* Reuse the translated actions for adding the kflow. */
struct nlattr *actions = nlmsg_find_attr(nlmsg_hdr(msg),
sizeof(struct genlmsghdr) + sizeof(struct ovs_header),
OVS_PACKET_ATTR_ACTIONS);
/* Don't send the packet back out if it would be dropped. */
if (nla_len(actions) > 0) {
nlh->nlmsg_pid = 0;
nlh->nlmsg_seq = 0;
nlh->nlmsg_flags = NLM_F_REQUEST;
struct iovec *iovec = &thread->tx_queue[thread->tx_queue_len++];
iovec->iov_base = nlh;
iovec->iov_len = nlh->nlmsg_len;
if (thread->log_upcalls) {
LOG_VERBOSE("Sending upcall reply:");
ind_ovs_dump_msg(nlh);
}
}
/* See the comment for ind_ovs_upcall_seen_key. */
if (ind_ovs_upcall_seen_key(thread, key)) {
/* Create a kflow with the given key and actions. */
ind_ovs_bh_request_kflow(key, actions);
}
}
static int npm_check_read_response(struct genl_info* info, void* params) {
int ret = 0;
struct nlattr* attr;
struct npm_check_params* check_params = params;
attr = nlmsg_find_attr(info->nlhdr, sizeof(struct genlmsghdr), DIRECTOR_A_DECISION);
if ( attr == NULL ) {
ret = -EBADMSG;
goto done;
}
check_params->decision = nla_get_u32(attr);
attr = nlmsg_find_attr(info->nlhdr, sizeof(struct genlmsghdr), DIRECTOR_A_DECISION_VALUE);
if ( attr != NULL ) {
check_params->decision_value = nla_get_u32(attr);
} else {
check_params->decision_value = 0;
}
done:
return ret;
}
ssize_t wimax_msg_len(struct sk_buff *msg)
{
struct nlmsghdr *nlh = (void *) msg->head;
struct nlattr *nla;
nla = nlmsg_find_attr(nlh, sizeof(struct genlmsghdr),
WIMAX_GNL_MSG_DATA);
if (nla == NULL) {
printk(KERN_ERR "Cannot find attribute WIMAX_GNL_MSG_DATA\n");
return -EINVAL;
}
return nla_len(nla);
}
/*
* Change state of port (ie from forwarding to blocking etc)
* Used by spanning tree in user space.
*/
static int br_rtm_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
struct net *net = sock_net(skb->sk);
struct ifinfomsg *ifm;
struct nlattr *protinfo;
struct net_device *dev;
struct net_bridge_port *p;
u8 new_state;
if (nlmsg_len(nlh) < sizeof(*ifm))
return -EINVAL;
ifm = nlmsg_data(nlh);
if (ifm->ifi_family != AF_BRIDGE)
return -EPFNOSUPPORT;
protinfo = nlmsg_find_attr(nlh, sizeof(*ifm), IFLA_PROTINFO);
if (!protinfo || nla_len(protinfo) < sizeof(u8))
return -EINVAL;
new_state = nla_get_u8(protinfo);
if (new_state > BR_STATE_BLOCKING)
return -EINVAL;
dev = __dev_get_by_index(net, ifm->ifi_index);
if (!dev)
return -ENODEV;
p = br_port_get_rtnl(dev);
if (!p)
return -EINVAL;
/* if kernel STP is running, don't allow changes */
if (p->br->stp_enabled == BR_KERNEL_STP)
return -EBUSY;
if (!netif_running(dev) ||
(!netif_carrier_ok(dev) && new_state != BR_STATE_DISABLED))
return -ENETDOWN;
p->state = new_state;
br_log_state(p);
spin_lock_bh(&p->br->lock);
br_port_state_selection(p->br);
spin_unlock_bh(&p->br->lock);
br_ifinfo_notify(RTM_NEWLINK, p);
return 0;
}
int handle_send_generic_user_message(struct sk_buff *skb, struct genl_info *info) {
struct nlattr* attr;
char* user_data;
int user_data_length, target_slot_index, target_slot_type;
// No handler registered?
if ( !generic_user_message_handler ) {
return -EINVAL;
}
attr = nlmsg_find_attr(info->nlhdr, sizeof(struct genlmsghdr), DIRECTOR_A_SLOT_INDEX);
if ( attr == NULL ) {
return -1;
}
target_slot_index = nla_get_u32(attr);
attr = nlmsg_find_attr(info->nlhdr, sizeof(struct genlmsghdr), DIRECTOR_A_SLOT_TYPE);
if ( attr == NULL ) {
return -1;
}
target_slot_type = nla_get_u32(attr);
attr = nlmsg_find_attr(info->nlhdr, sizeof(struct genlmsghdr), DIRECTOR_A_LENGTH);
if ( attr == NULL ) {
return -1;
}
user_data_length = nla_get_u32(attr);
attr = nlmsg_find_attr(info->nlhdr, sizeof(struct genlmsghdr), DIRECTOR_A_USER_DATA);
if ( attr == NULL ) {
return -1;
}
user_data = nla_data(attr);
return generic_user_message_handler(target_slot_type, target_slot_index, user_data_length, user_data);
};
static int node_connected_read_response(struct genl_info* info, void* params) {
int ret = 0;
struct nlattr* attr;
struct node_connected_params* node_connected_params = params;
attr = nlmsg_find_attr(info->nlhdr, sizeof(struct genlmsghdr), DIRECTOR_A_DECISION);
if ( attr == NULL ) {
ret = -EBADMSG;
goto done;
}
node_connected_params->accepted = nla_get_u32(attr);
done:
return ret;
}
/*
* Change state of port (ie from forwarding to blocking etc)
* Used by spanning tree in user space.
*/
static int br_rtm_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
struct ifinfomsg *ifm;
struct nlattr *protinfo;
struct net_device *dev;
struct net_bridge_port *p;
u8 new_state;
if (nlmsg_len(nlh) < sizeof(*ifm))
return -EINVAL;
ifm = nlmsg_data(nlh);
if (ifm->ifi_family != AF_BRIDGE)
return -EPFNOSUPPORT;
protinfo = nlmsg_find_attr(nlh, sizeof(*ifm), IFLA_PROTINFO);
if (!protinfo || nla_len(protinfo) < sizeof(u8))
return -EINVAL;
new_state = nla_get_u8(protinfo);
if (new_state > BR_STATE_BLOCKING)
return -EINVAL;
dev = __if_dev_get_by_index(ifm->ifi_index);
if (!dev)
return -ENODEV;
p = dev->br_port;
if (!p)
return -EINVAL;
/* if kernel STP is running, don't allow changes */
if (p->br->stp_enabled)
return -EBUSY;
if (!if_dev_admin_up(dev) ||
(!if_dev_running(dev) && new_state != BR_STATE_DISABLED))
return -ENETDOWN;
p->state = new_state;
br_log_state(p);
return 0;
}
/* Change state and parameters on port. */
int br_setlink(struct net_device *dev, struct nlmsghdr *nlh)
{
struct ifinfomsg *ifm;
struct nlattr *protinfo;
struct net_bridge_port *p;
struct nlattr *tb[IFLA_BRPORT_MAX + 1];
int err;
ifm = nlmsg_data(nlh);
protinfo = nlmsg_find_attr(nlh, sizeof(*ifm), IFLA_PROTINFO);
if (!protinfo)
return 0;
p = br_port_get_rtnl(dev);
if (!p)
return -EINVAL;
if (protinfo->nla_type & NLA_F_NESTED) {
err = nla_parse_nested(tb, IFLA_BRPORT_MAX,
protinfo, ifla_brport_policy);
if (err)
return err;
spin_lock_bh(&p->br->lock);
err = br_setport(p, tb);
spin_unlock_bh(&p->br->lock);
} else {
/* Binary compatability with old RSTP */
if (nla_len(protinfo) < sizeof(u8))
return -EINVAL;
spin_lock_bh(&p->br->lock);
err = br_set_port_state(p, nla_get_u8(protinfo));
spin_unlock_bh(&p->br->lock);
}
if (err == 0)
br_ifinfo_notify(RTM_NEWLINK, p);
return err;
}
/*
* See the OF_PORT_DEST_USE_TABLE comment in ind_ovs_translate_actions.
* This is mostly the same as ind_ovs_handle_packet_miss but does
* not reuse the original message for the execute command since
* the incoming message has a userdata attribute.
* It also doesn't install a kflow or update flow stats.
*/
static void
ind_ovs_handle_packet_table(struct ind_ovs_upcall_thread *thread,
struct ind_ovs_port *port,
struct nl_msg *msg, struct nlattr **attrs)
{
struct nlattr *key = attrs[OVS_PACKET_ATTR_KEY];
struct nlattr *packet = attrs[OVS_PACKET_ATTR_PACKET];
assert(key && packet);
struct ind_ovs_parsed_key pkey;
ind_ovs_parse_key(key, &pkey);
/* Lookup the flow in the userspace flowtable. */
struct ind_ovs_flow *flow;
if (ind_ovs_lookup_flow(&pkey, &flow) != 0) {
ind_ovs_upcall_request_pktin(pkey.in_port, port, packet, key, OF_PACKET_IN_REASON_NO_MATCH);
return;
}
/* Send OVS_PACKET_CMD_EXECUTE. */
/* TODO ensure the message is large enough */
struct nl_msg *reply = ind_ovs_create_nlmsg(ovs_packet_family,
OVS_PACKET_CMD_EXECUTE);
ind_ovs_translate_actions(&pkey, flow->of_list_action,
reply, OVS_PACKET_ATTR_ACTIONS);
nla_put(reply, OVS_PACKET_ATTR_KEY, nla_len(key), nla_data(key));
nla_put(reply, OVS_PACKET_ATTR_PACKET, nla_len(packet), nla_data(packet));
struct nlattr *actions = nlmsg_find_attr(nlmsg_hdr(reply),
sizeof(struct genlmsghdr) + sizeof(struct ovs_header),
OVS_PACKET_ATTR_ACTIONS);
/* Don't send the packet back out if it would be dropped. */
if (nla_len(actions) > 0) {
nl_send_auto(port->notify_socket, reply);
}
ind_ovs_nlmsg_freelist_free(reply);
}
/* Delete port information */
int br_dellink(struct net_device *dev, struct nlmsghdr *nlh)
{
struct ifinfomsg *ifm;
struct nlattr *afspec;
struct net_bridge_port *p;
int err;
ifm = nlmsg_data(nlh);
afspec = nlmsg_find_attr(nlh, sizeof(*ifm), IFLA_AF_SPEC);
if (!afspec)
return 0;
p = br_port_get_rtnl(dev);
/* We want to accept dev as bridge itself as well */
if (!p && !(dev->priv_flags & IFF_EBRIDGE))
return -EINVAL;
err = br_afspec((struct net_bridge *)netdev_priv(dev), p,
afspec, RTM_DELLINK);
return err;
}
/*
* Process DELLINK event
*/
int
__ni_rtevent_dellink(ni_netconfig_t *nc, const struct sockaddr_nl *nladdr, struct nlmsghdr *h)
{
struct ifinfomsg *ifi;
ni_netdev_t *dev;
struct nlattr *nla;
const char *ifname = NULL;
if (!(ifi = ni_rtnl_ifinfomsg(h, RTM_DELLINK)))
return -1;
if ((nla = nlmsg_find_attr(h, sizeof(*ifi), IFLA_IFNAME)) != NULL) {
ifname = (char *) nla_data(nla);
}
if (ifi->ifi_family == AF_BRIDGE) {
ni_debug_events("%s: ignoring bridge DELLINK event", ifname);
return 0;
}
/* Open code interface removal. */
if ((dev = ni_netdev_by_index(nc, ifi->ifi_index)) == NULL) {
ni_debug_events("RTM_DELLINK message for unknown interface %s index %d",
ifname, ifi->ifi_index);
return -1;
} else {
unsigned int old_flags = dev->link.ifflags;
dev->link.ifflags = __ni_netdev_translate_ifflags(ifi->ifi_flags, old_flags);
dev->deleted = 1;
__ni_netdev_process_events(nc, dev, old_flags);
ni_client_state_drop(dev->link.ifindex);
ni_netconfig_device_remove(nc, dev);
}
return 0;
}
/**
* Setups generic netlink connection with the kernel module and retrieves assocaited family id
*
* @return 0 on success
*/
static int initialize_netlink_family(void) {
struct nl_handle* hndl;
struct nl_msg* msg = NULL;
struct nl_msg *ans_msg = NULL;
struct nlmsghdr *nl_hdr;
struct genlmsghdr* genl_hdr;
struct nlattr *nla;
int ret_val = 0;
hndl = nl_handle_alloc();
nl_set_buffer_size(hndl, 15000000, 15000000);
//nl_handle_set_peer_pid(hndl, 0);
//nl_set_passcred(hndl, 1);
nl_disable_sequence_check(hndl);
if ( (ret_val=nl_connect(hndl, NETLINK_GENERIC)) )
goto init_return;
nl_set_buffer_size(hndl, 15000000, 15000000);
if ( (ret_val=prepare_request_message(hndl, CTRL_CMD_GETFAMILY, GENL_ID_CTRL, &msg) ) != 0 ) {
goto init_return;
}
ret_val = nla_put_string(msg,
CTRL_ATTR_FAMILY_NAME,
"DIRECTORCHNL");
if (ret_val != 0)
goto init_return;
if ( (ret_val = send_request_message(hndl, msg, 0) ) != 0 )
goto init_return;
if ( (ret_val = read_message(hndl, &ans_msg) ) != 0 )
goto init_return;
genl_hdr = nl_msg_genlhdr(ans_msg);
if (genl_hdr == NULL || genl_hdr->cmd != CTRL_CMD_NEWFAMILY) {
ret_val = -EBADMSG;
goto init_return;
}
nla = nlmsg_find_attr(nlmsg_hdr(ans_msg), sizeof(struct genlmsghdr), CTRL_ATTR_FAMILY_ID);
if (nla == NULL) {
ret_val = -EBADMSG;
goto init_return;
}
state.gnl_fid = nla_get_u16(nla);
if (state.gnl_fid == 0) {
ret_val = -EBADMSG;
goto init_return;
}
state.handle = hndl;
return 0;
init_return:
nlmsg_free(ans_msg);
if ( state.handle == NULL ) {
nl_close(hndl);
nl_handle_destroy(hndl);
}
return -EINVAL;
}
int handle_immigration_confirmed(struct nl_msg *req_msg) {
struct nl_msg *msg = NULL;
struct nlattr *nla;
int ret = 0;
int seq;
struct internal_state* state = get_current_state();
// In params
int uid;
int slot_index;
char* name;
pid_t local_pid;
pid_t remote_pid;
unsigned long jiffies;
seq = nlmsg_hdr(req_msg)->nlmsg_seq;
nla = nlmsg_find_attr(nlmsg_hdr(req_msg), sizeof(struct genlmsghdr), DIRECTOR_A_UID);
if (nla == NULL)
return -EBADMSG;
uid = nla_get_u32(nla);
nla = nlmsg_find_attr(nlmsg_hdr(req_msg), sizeof(struct genlmsghdr), DIRECTOR_A_INDEX);
if (nla == NULL)
return -EBADMSG;
slot_index = nla_get_u32(nla);
nla = nlmsg_find_attr(nlmsg_hdr(req_msg), sizeof(struct genlmsghdr), DIRECTOR_A_NAME);
if (nla == NULL)
return -EBADMSG;
//name = nl_data_get(nla_get_data(nla));
name = nla_data(nla);
nla = nlmsg_find_attr(nlmsg_hdr(req_msg), sizeof(struct genlmsghdr), DIRECTOR_A_JIFFIES);
if (nla == NULL)
return -EBADMSG;
jiffies = nla_get_u64(nla);
nla = nlmsg_find_attr(nlmsg_hdr(req_msg), sizeof(struct genlmsghdr), DIRECTOR_A_PID);
if (nla == NULL)
return -EBADMSG;
local_pid = nla_get_u32(nla);
nla = nlmsg_find_attr(nlmsg_hdr(req_msg), sizeof(struct genlmsghdr), DIRECTOR_A_REMOTE_PID);
if (nla == NULL)
return -EBADMSG;
remote_pid = nla_get_u32(nla);
//printf("NPM CALLED FOR NAME: %s\n", name);
if ( immigration_confirmed_callback )
immigration_confirmed_callback(uid, slot_index, name, jiffies, local_pid, remote_pid);
if ( (ret=prepare_response_message(state->sk, DIRECTOR_ACK, state->gnl_fid, seq, &msg) ) != 0 ) {
goto done;
}
ret = send_request_message(state->sk, msg, 0);
goto done;
error_del_resp:
nlmsg_free(msg);
done:
return ret;
}
/*
* Process NEWLINK event
*/
int
__ni_rtevent_newlink(ni_netconfig_t *nc, const struct sockaddr_nl *nladdr, struct nlmsghdr *h)
{
char namebuf[IF_NAMESIZE+1] = {'\0'};
ni_netdev_t *dev, *old;
struct ifinfomsg *ifi;
struct nlattr *nla;
char *ifname = NULL;
int old_flags = 0;
if (!(ifi = ni_rtnl_ifinfomsg(h, RTM_NEWLINK)))
return -1;
if (ifi->ifi_family == AF_BRIDGE)
return 0;
old = ni_netdev_by_index(nc, ifi->ifi_index);
ifname = if_indextoname(ifi->ifi_index, namebuf);
if (!ifname) {
/*
* device (index) does not exists any more;
* process deletion/cleanup of the device.
*/
if (old) {
old_flags = old->link.ifflags;
old->link.ifflags = 0;
old->deleted = 1;
__ni_netdev_process_events(nc, old, old_flags);
ni_client_state_drop(old->link.ifindex);
ni_netconfig_device_remove(nc, old);
}
return 0;
}
if (old) {
if (!ni_string_eq(old->name, ifname)) {
ni_debug_events("%s[%u]: device renamed to %s",
old->name, old->link.ifindex, ifname);
ni_string_dup(&old->name, ifname);
__ni_netdev_event(nc, old, NI_EVENT_DEVICE_RENAME);
}
dev = old;
old_flags = old->link.ifflags;
} else {
if (!(dev = ni_netdev_new(ifname, ifi->ifi_index))) {
ni_warn("%s[%u]: unable to allocate memory for device",
ifname, ifi->ifi_index);
return -1;
}
dev->created = 1;
ni_netconfig_device_append(nc, dev);
}
if (__ni_netdev_process_newlink(dev, h, ifi, nc) < 0) {
ni_error("Problem parsing RTM_NEWLINK message for %s", ifname);
return -1;
}
if ((ifname = dev->name)) {
ni_netdev_t *conflict;
conflict = ni_netdev_by_name(nc, ifname);
if (conflict && conflict->link.ifindex != (unsigned int)ifi->ifi_index) {
/*
* As the events often provide an already obsolete name [2 events,
* we process 1st with next in read buffer], we are reading the
* current dev->name in advance (above).
*
* On a rename like eth0->rename1->eth1, eth1->rename2->eth0, the
* current dev->name is already eth1 at processing time of eth0
* to rename1 event. This sometimes causes that we find eth1 in
* our device list [eth1 -> rename2 event in the read buffer].
*
* Just update the name of the conflicting device in advance too
* and when the interface does not exist any more, emit events.
*/
char *current = if_indextoname(conflict->link.ifindex, namebuf);
if (current) {
ni_string_dup(&conflict->name, current);
__ni_netdev_event(nc, conflict, NI_EVENT_DEVICE_RENAME);
} else {
unsigned int ifflags = conflict->link.ifflags;
conflict->link.ifflags = 0;
conflict->deleted = 1;
__ni_netdev_process_events(nc, conflict, ifflags);
ni_client_state_drop(conflict->link.ifindex);
ni_netconfig_device_remove(nc, conflict);
}
}
}
__ni_netdev_process_events(nc, dev, old_flags);
if ((nla = nlmsg_find_attr(h, sizeof(*ifi), IFLA_WIRELESS)) != NULL)
__ni_wireless_link_event(nc, dev, nla_data(nla), nla_len(nla));
return 0;
}
