}
}
-static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen)
+static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen,
+ int err)
{
struct sock *sk;
- struct hlist_node *node, *tmp;
+ struct hlist_node *tmp;
struct nfc_llcp_sock *llcp_sock;
skb_queue_purge(&local->tx_queue);
write_lock(&local->sockets.lock);
- sk_for_each_safe(sk, node, tmp, &local->sockets.head) {
+ sk_for_each_safe(sk, tmp, &local->sockets.head) {
llcp_sock = nfc_llcp_sock(sk);
bh_lock_sock(sk);
nfc_llcp_accept_unlink(accept_sk);
+ if (err)
+ accept_sk->sk_err = err;
accept_sk->sk_state = LLCP_CLOSED;
+ accept_sk->sk_state_change(sk);
bh_unlock_sock(accept_sk);
continue;
}
+ if (err)
+ sk->sk_err = err;
sk->sk_state = LLCP_CLOSED;
+ sk->sk_state_change(sk);
bh_unlock_sock(sk);
}
write_unlock(&local->sockets.lock);
+
+ /*
+ * If we want to keep the listening sockets alive,
+ * we don't touch the RAW ones.
+ */
+ if (listen == true)
+ return;
+
+ write_lock(&local->raw_sockets.lock);
+
+ sk_for_each_safe(sk, tmp, &local->raw_sockets.head) {
+ llcp_sock = nfc_llcp_sock(sk);
+
+ bh_lock_sock(sk);
+
+ nfc_llcp_socket_purge(llcp_sock);
+
+ if (err)
+ sk->sk_err = err;
+ sk->sk_state = LLCP_CLOSED;
+ sk->sk_state_change(sk);
+
+ bh_unlock_sock(sk);
+
+ sock_orphan(sk);
+
+ sk_del_node_init(sk);
+ }
+
+ write_unlock(&local->raw_sockets.lock);
}
struct nfc_llcp_local *nfc_llcp_local_get(struct nfc_llcp_local *local)
return local;
}
-static void local_release(struct kref *ref)
+static void local_cleanup(struct nfc_llcp_local *local, bool listen)
{
- struct nfc_llcp_local *local;
-
- local = container_of(ref, struct nfc_llcp_local, ref);
-
- list_del(&local->list);
- nfc_llcp_socket_release(local, false);
+ nfc_llcp_socket_release(local, listen, ENXIO);
del_timer_sync(&local->link_timer);
skb_queue_purge(&local->tx_queue);
cancel_work_sync(&local->tx_work);
cancel_work_sync(&local->rx_work);
cancel_work_sync(&local->timeout_work);
kfree_skb(local->rx_pending);
+ del_timer_sync(&local->sdreq_timer);
+ cancel_work_sync(&local->sdreq_timeout_work);
+ nfc_llcp_free_sdp_tlv_list(&local->pending_sdreqs);
+}
+
+static void local_release(struct kref *ref)
+{
+ struct nfc_llcp_local *local;
+
+ local = container_of(ref, struct nfc_llcp_local, ref);
+
+ list_del(&local->list);
+ local_cleanup(local, false);
kfree(local);
}
u8 ssap, u8 dsap)
{
struct sock *sk;
- struct hlist_node *node;
struct nfc_llcp_sock *llcp_sock, *tmp_sock;
pr_debug("ssap dsap %d %d\n", ssap, dsap);
llcp_sock = NULL;
- sk_for_each(sk, node, &local->sockets.head) {
+ sk_for_each(sk, &local->sockets.head) {
tmp_sock = nfc_llcp_sock(sk);
if (tmp_sock->ssap == ssap && tmp_sock->dsap == dsap) {
schedule_work(&local->timeout_work);
}
+static void nfc_llcp_sdreq_timeout_work(struct work_struct *work)
+{
+ unsigned long time;
+ HLIST_HEAD(nl_sdres_list);
+ struct hlist_node *n;
+ struct nfc_llcp_sdp_tlv *sdp;
+ struct nfc_llcp_local *local = container_of(work, struct nfc_llcp_local,
+ sdreq_timeout_work);
+
+ mutex_lock(&local->sdreq_lock);
+
+ time = jiffies - msecs_to_jiffies(3 * local->remote_lto);
+
+ hlist_for_each_entry_safe(sdp, n, &local->pending_sdreqs, node) {
+ if (time_after(sdp->time, time))
+ continue;
+
+ sdp->sap = LLCP_SDP_UNBOUND;
+
+ hlist_del(&sdp->node);
+
+ hlist_add_head(&sdp->node, &nl_sdres_list);
+ }
+
+ if (!hlist_empty(&local->pending_sdreqs))
+ mod_timer(&local->sdreq_timer,
+ jiffies + msecs_to_jiffies(3 * local->remote_lto));
+
+ mutex_unlock(&local->sdreq_lock);
+
+ if (!hlist_empty(&nl_sdres_list))
+ nfc_genl_llc_send_sdres(local->dev, &nl_sdres_list);
+}
+
+static void nfc_llcp_sdreq_timer(unsigned long data)
+{
+ struct nfc_llcp_local *local = (struct nfc_llcp_local *) data;
+
+ schedule_work(&local->sdreq_timeout_work);
+}
+
struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev)
{
struct nfc_llcp_local *local, *n;
u8 *sn, size_t sn_len)
{
struct sock *sk;
- struct hlist_node *node;
struct nfc_llcp_sock *llcp_sock, *tmp_sock;
pr_debug("sn %zd %p\n", sn_len, sn);
llcp_sock = NULL;
- sk_for_each(sk, node, &local->sockets.head) {
+ sk_for_each(sk, &local->sockets.head) {
tmp_sock = nfc_llcp_sock(sk);
pr_debug("llcp sock %p\n", tmp_sock);
void nfc_llcp_send_to_raw_sock(struct nfc_llcp_local *local,
struct sk_buff *skb, u8 direction)
{
- struct hlist_node *node;
struct sk_buff *skb_copy = NULL, *nskb;
struct sock *sk;
u8 *data;
read_lock(&local->raw_sockets.lock);
- sk_for_each(sk, node, &local->raw_sockets.head) {
+ sk_for_each(sk, &local->raw_sockets.head) {
if (sk->sk_state != LLCP_BOUND)
continue;
{
struct sock *sk;
struct nfc_llcp_sock *llcp_sock;
- struct hlist_node *node;
read_lock(&local->connecting_sockets.lock);
- sk_for_each(sk, node, &local->connecting_sockets.head) {
+ sk_for_each(sk, &local->connecting_sockets.head) {
llcp_sock = nfc_llcp_sock(sk);
if (llcp_sock->ssap == ssap) {
ui_cb->dsap = dsap;
ui_cb->ssap = ssap;
- printk("%s %d %d\n", __func__, dsap, ssap);
-
pr_debug("%d %d\n", dsap, ssap);
/* We're looking for a bound socket, not a client one */
new_sock = nfc_llcp_sock(new_sk);
new_sock->dev = local->dev;
new_sock->local = nfc_llcp_local_get(local);
- new_sock->miu = local->remote_miu;
+ new_sock->rw = sock->rw;
+ new_sock->miux = sock->miux;
+ new_sock->remote_miu = local->remote_miu;
new_sock->nfc_protocol = sock->nfc_protocol;
new_sock->dsap = ssap;
new_sock->target_idx = local->target_idx;
pr_debug("Remote ready %d tx queue len %d remote rw %d",
sock->remote_ready, skb_queue_len(&sock->tx_pending_queue),
- sock->rw);
+ sock->remote_rw);
/* Try to queue some I frames for transmission */
while (sock->remote_ready &&
- skb_queue_len(&sock->tx_pending_queue) < sock->rw) {
+ skb_queue_len(&sock->tx_pending_queue) < sock->remote_rw) {
struct sk_buff *pdu;
pdu = skb_dequeue(&sock->tx_queue);
u16 tlv_len, offset;
char *service_name;
size_t service_name_len;
+ struct nfc_llcp_sdp_tlv *sdp;
+ HLIST_HEAD(llc_sdres_list);
+ size_t sdres_tlvs_len;
+ HLIST_HEAD(nl_sdres_list);
dsap = nfc_llcp_dsap(skb);
ssap = nfc_llcp_ssap(skb);
tlv = &skb->data[LLCP_HEADER_SIZE];
tlv_len = skb->len - LLCP_HEADER_SIZE;
offset = 0;
+ sdres_tlvs_len = 0;
while (offset < tlv_len) {
type = tlv[0];
!strncmp(service_name, "urn:nfc:sn:sdp",
service_name_len)) {
sap = 1;
- goto send_snl;
+ goto add_snl;
}
llcp_sock = nfc_llcp_sock_from_sn(local, service_name,
service_name_len);
if (!llcp_sock) {
sap = 0;
- goto send_snl;
+ goto add_snl;
}
/*
if (sap == LLCP_SAP_MAX) {
sap = 0;
- goto send_snl;
+ goto add_snl;
}
client_count =
pr_debug("%p %d\n", llcp_sock, sap);
-send_snl:
- nfc_llcp_send_snl(local, tid, sap);
+add_snl:
+ sdp = nfc_llcp_build_sdres_tlv(tid, sap);
+ if (sdp == NULL)
+ goto exit;
+
+ sdres_tlvs_len += sdp->tlv_len;
+ hlist_add_head(&sdp->node, &llc_sdres_list);
+ break;
+
+ case LLCP_TLV_SDRES:
+ mutex_lock(&local->sdreq_lock);
+
+ pr_debug("LLCP_TLV_SDRES: searching tid %d\n", tlv[2]);
+
+ hlist_for_each_entry(sdp, &local->pending_sdreqs, node) {
+ if (sdp->tid != tlv[2])
+ continue;
+
+ sdp->sap = tlv[3];
+
+ pr_debug("Found: uri=%s, sap=%d\n",
+ sdp->uri, sdp->sap);
+
+ hlist_del(&sdp->node);
+
+ hlist_add_head(&sdp->node, &nl_sdres_list);
+
+ break;
+ }
+
+ mutex_unlock(&local->sdreq_lock);
break;
default:
offset += length + 2;
tlv += length + 2;
}
+
+exit:
+ if (!hlist_empty(&nl_sdres_list))
+ nfc_genl_llc_send_sdres(local->dev, &nl_sdres_list);
+
+ if (!hlist_empty(&llc_sdres_list))
+ nfc_llcp_send_snl_sdres(local, &llc_sdres_list, sdres_tlvs_len);
}
static void nfc_llcp_rx_work(struct work_struct *work)
return;
/* Close and purge all existing sockets */
- nfc_llcp_socket_release(local, true);
+ nfc_llcp_socket_release(local, true, 0);
}
void nfc_llcp_mac_is_up(struct nfc_dev *dev, u32 target_idx,
local->remote_miu = LLCP_DEFAULT_MIU;
local->remote_lto = LLCP_DEFAULT_LTO;
+ mutex_init(&local->sdreq_lock);
+ INIT_HLIST_HEAD(&local->pending_sdreqs);
+ init_timer(&local->sdreq_timer);
+ local->sdreq_timer.data = (unsigned long) local;
+ local->sdreq_timer.function = nfc_llcp_sdreq_timer;
+ INIT_WORK(&local->sdreq_timeout_work, nfc_llcp_sdreq_timeout_work);
+
list_add(&local->list, &llcp_devices);
return 0;
return;
}
+ local_cleanup(local, false);
+
nfc_llcp_local_put(local);
}