summaryrefslogtreecommitdiffstats
path: root/net/nfc/llcp
diff options
context:
space:
mode:
Diffstat (limited to 'net/nfc/llcp')
-rw-r--r--net/nfc/llcp/commands.c205
-rw-r--r--net/nfc/llcp/llcp.c112
-rw-r--r--net/nfc/llcp/llcp.h36
-rw-r--r--net/nfc/llcp/sock.c130
4 files changed, 430 insertions, 53 deletions
diff --git a/net/nfc/llcp/commands.c b/net/nfc/llcp/commands.c
index c6bc3bd9505..b75a9b3f9e8 100644
--- a/net/nfc/llcp/commands.c
+++ b/net/nfc/llcp/commands.c
@@ -117,6 +117,88 @@ u8 *nfc_llcp_build_tlv(u8 type, u8 *value, u8 value_length, u8 *tlv_length)
return tlv;
}
+struct nfc_llcp_sdp_tlv *nfc_llcp_build_sdres_tlv(u8 tid, u8 sap)
+{
+ struct nfc_llcp_sdp_tlv *sdres;
+ u8 value[2];
+
+ sdres = kzalloc(sizeof(struct nfc_llcp_sdp_tlv), GFP_KERNEL);
+ if (sdres == NULL)
+ return NULL;
+
+ value[0] = tid;
+ value[1] = sap;
+
+ sdres->tlv = nfc_llcp_build_tlv(LLCP_TLV_SDRES, value, 2,
+ &sdres->tlv_len);
+ if (sdres->tlv == NULL) {
+ kfree(sdres);
+ return NULL;
+ }
+
+ sdres->tid = tid;
+ sdres->sap = sap;
+
+ INIT_HLIST_NODE(&sdres->node);
+
+ return sdres;
+}
+
+struct nfc_llcp_sdp_tlv *nfc_llcp_build_sdreq_tlv(u8 tid, char *uri,
+ size_t uri_len)
+{
+ struct nfc_llcp_sdp_tlv *sdreq;
+
+ pr_debug("uri: %s, len: %zu\n", uri, uri_len);
+
+ sdreq = kzalloc(sizeof(struct nfc_llcp_sdp_tlv), GFP_KERNEL);
+ if (sdreq == NULL)
+ return NULL;
+
+ sdreq->tlv_len = uri_len + 3;
+
+ if (uri[uri_len - 1] == 0)
+ sdreq->tlv_len--;
+
+ sdreq->tlv = kzalloc(sdreq->tlv_len + 1, GFP_KERNEL);
+ if (sdreq->tlv == NULL) {
+ kfree(sdreq);
+ return NULL;
+ }
+
+ sdreq->tlv[0] = LLCP_TLV_SDREQ;
+ sdreq->tlv[1] = sdreq->tlv_len - 2;
+ sdreq->tlv[2] = tid;
+
+ sdreq->tid = tid;
+ sdreq->uri = sdreq->tlv + 3;
+ memcpy(sdreq->uri, uri, uri_len);
+
+ sdreq->time = jiffies;
+
+ INIT_HLIST_NODE(&sdreq->node);
+
+ return sdreq;
+}
+
+void nfc_llcp_free_sdp_tlv(struct nfc_llcp_sdp_tlv *sdp)
+{
+ kfree(sdp->tlv);
+ kfree(sdp);
+}
+
+void nfc_llcp_free_sdp_tlv_list(struct hlist_head *head)
+{
+ struct nfc_llcp_sdp_tlv *sdp;
+ struct hlist_node *n;
+
+ hlist_for_each_entry_safe(sdp, n, head, node) {
+ hlist_del(&sdp->node);
+
+ nfc_llcp_free_sdp_tlv(sdp);
+ }
+}
+
int nfc_llcp_parse_gb_tlv(struct nfc_llcp_local *local,
u8 *tlv_array, u16 tlv_array_len)
{
@@ -184,10 +266,10 @@ int nfc_llcp_parse_connection_tlv(struct nfc_llcp_sock *sock,
switch (type) {
case LLCP_TLV_MIUX:
- sock->miu = llcp_tlv_miux(tlv) + 128;
+ sock->remote_miu = llcp_tlv_miux(tlv) + 128;
break;
case LLCP_TLV_RW:
- sock->rw = llcp_tlv_rw(tlv);
+ sock->remote_rw = llcp_tlv_rw(tlv);
break;
case LLCP_TLV_SN:
break;
@@ -200,7 +282,8 @@ int nfc_llcp_parse_connection_tlv(struct nfc_llcp_sock *sock,
tlv += length + 2;
}
- pr_debug("sock %p rw %d miu %d\n", sock, sock->rw, sock->miu);
+ pr_debug("sock %p rw %d miu %d\n", sock,
+ sock->remote_rw, sock->remote_miu);
return 0;
}
@@ -318,9 +401,9 @@ int nfc_llcp_send_connect(struct nfc_llcp_sock *sock)
struct sk_buff *skb;
u8 *service_name_tlv = NULL, service_name_tlv_length;
u8 *miux_tlv = NULL, miux_tlv_length;
- u8 *rw_tlv = NULL, rw_tlv_length;
+ u8 *rw_tlv = NULL, rw_tlv_length, rw;
int err;
- u16 size = 0;
+ u16 size = 0, miux;
pr_debug("Sending CONNECT\n");
@@ -336,11 +419,15 @@ int nfc_llcp_send_connect(struct nfc_llcp_sock *sock)
size += service_name_tlv_length;
}
- miux_tlv = nfc_llcp_build_tlv(LLCP_TLV_MIUX, (u8 *)&local->miux, 0,
+ /* If the socket parameters are not set, use the local ones */
+ miux = sock->miux > LLCP_MAX_MIUX ? local->miux : sock->miux;
+ rw = sock->rw > LLCP_MAX_RW ? local->rw : sock->rw;
+
+ miux_tlv = nfc_llcp_build_tlv(LLCP_TLV_MIUX, (u8 *)&miux, 0,
&miux_tlv_length);
size += miux_tlv_length;
- rw_tlv = nfc_llcp_build_tlv(LLCP_TLV_RW, &local->rw, 0, &rw_tlv_length);
+ rw_tlv = nfc_llcp_build_tlv(LLCP_TLV_RW, &rw, 0, &rw_tlv_length);
size += rw_tlv_length;
pr_debug("SKB size %d SN length %zu\n", size, sock->service_name_len);
@@ -377,9 +464,9 @@ int nfc_llcp_send_cc(struct nfc_llcp_sock *sock)
struct nfc_llcp_local *local;
struct sk_buff *skb;
u8 *miux_tlv = NULL, miux_tlv_length;
- u8 *rw_tlv = NULL, rw_tlv_length;
+ u8 *rw_tlv = NULL, rw_tlv_length, rw;
int err;
- u16 size = 0;
+ u16 size = 0, miux;
pr_debug("Sending CC\n");
@@ -387,11 +474,15 @@ int nfc_llcp_send_cc(struct nfc_llcp_sock *sock)
if (local == NULL)
return -ENODEV;
- miux_tlv = nfc_llcp_build_tlv(LLCP_TLV_MIUX, (u8 *)&local->miux, 0,
+ /* If the socket parameters are not set, use the local ones */
+ miux = sock->miux > LLCP_MAX_MIUX ? local->miux : sock->miux;
+ rw = sock->rw > LLCP_MAX_RW ? local->rw : sock->rw;
+
+ miux_tlv = nfc_llcp_build_tlv(LLCP_TLV_MIUX, (u8 *)&miux, 0,
&miux_tlv_length);
size += miux_tlv_length;
- rw_tlv = nfc_llcp_build_tlv(LLCP_TLV_RW, &local->rw, 0, &rw_tlv_length);
+ rw_tlv = nfc_llcp_build_tlv(LLCP_TLV_RW, &rw, 0, &rw_tlv_length);
size += rw_tlv_length;
skb = llcp_allocate_pdu(sock, LLCP_PDU_CC, size);
@@ -416,48 +507,90 @@ error_tlv:
return err;
}
-int nfc_llcp_send_snl(struct nfc_llcp_local *local, u8 tid, u8 sap)
+static struct sk_buff *nfc_llcp_allocate_snl(struct nfc_llcp_local *local,
+ size_t tlv_length)
{
struct sk_buff *skb;
struct nfc_dev *dev;
- u8 *sdres_tlv = NULL, sdres_tlv_length, sdres[2];
u16 size = 0;
- pr_debug("Sending SNL tid 0x%x sap 0x%x\n", tid, sap);
-
if (local == NULL)
- return -ENODEV;
+ return ERR_PTR(-ENODEV);
dev = local->dev;
if (dev == NULL)
- return -ENODEV;
-
- sdres[0] = tid;
- sdres[1] = sap;
- sdres_tlv = nfc_llcp_build_tlv(LLCP_TLV_SDRES, sdres, 0,
- &sdres_tlv_length);
- if (sdres_tlv == NULL)
- return -ENOMEM;
+ return ERR_PTR(-ENODEV);
size += LLCP_HEADER_SIZE;
size += dev->tx_headroom + dev->tx_tailroom + NFC_HEADER_SIZE;
- size += sdres_tlv_length;
+ size += tlv_length;
skb = alloc_skb(size, GFP_KERNEL);
- if (skb == NULL) {
- kfree(sdres_tlv);
- return -ENOMEM;
- }
+ if (skb == NULL)
+ return ERR_PTR(-ENOMEM);
skb_reserve(skb, dev->tx_headroom + NFC_HEADER_SIZE);
skb = llcp_add_header(skb, LLCP_SAP_SDP, LLCP_SAP_SDP, LLCP_PDU_SNL);
- memcpy(skb_put(skb, sdres_tlv_length), sdres_tlv, sdres_tlv_length);
+ return skb;
+}
+
+int nfc_llcp_send_snl_sdres(struct nfc_llcp_local *local,
+ struct hlist_head *tlv_list, size_t tlvs_len)
+{
+ struct nfc_llcp_sdp_tlv *sdp;
+ struct hlist_node *n;
+ struct sk_buff *skb;
+
+ skb = nfc_llcp_allocate_snl(local, tlvs_len);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ hlist_for_each_entry_safe(sdp, n, tlv_list, node) {
+ memcpy(skb_put(skb, sdp->tlv_len), sdp->tlv, sdp->tlv_len);
+
+ hlist_del(&sdp->node);
+
+ nfc_llcp_free_sdp_tlv(sdp);
+ }
skb_queue_tail(&local->tx_queue, skb);
- kfree(sdres_tlv);
+ return 0;
+}
+
+int nfc_llcp_send_snl_sdreq(struct nfc_llcp_local *local,
+ struct hlist_head *tlv_list, size_t tlvs_len)
+{
+ struct nfc_llcp_sdp_tlv *sdreq;
+ struct hlist_node *n;
+ struct sk_buff *skb;
+
+ skb = nfc_llcp_allocate_snl(local, tlvs_len);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ mutex_lock(&local->sdreq_lock);
+
+ if (hlist_empty(&local->pending_sdreqs))
+ mod_timer(&local->sdreq_timer,
+ jiffies + msecs_to_jiffies(3 * local->remote_lto));
+
+ hlist_for_each_entry_safe(sdreq, n, tlv_list, node) {
+ pr_debug("tid %d for %s\n", sdreq->tid, sdreq->uri);
+
+ memcpy(skb_put(skb, sdreq->tlv_len), sdreq->tlv,
+ sdreq->tlv_len);
+
+ hlist_del(&sdreq->node);
+
+ hlist_add_head(&sdreq->node, &local->pending_sdreqs);
+ }
+
+ mutex_unlock(&local->sdreq_lock);
+
+ skb_queue_tail(&local->tx_queue, skb);
return 0;
}
@@ -532,8 +665,8 @@ int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock,
/* Remote is ready but has not acknowledged our frames */
if((sock->remote_ready &&
- skb_queue_len(&sock->tx_pending_queue) >= sock->rw &&
- skb_queue_len(&sock->tx_queue) >= 2 * sock->rw)) {
+ skb_queue_len(&sock->tx_pending_queue) >= sock->remote_rw &&
+ skb_queue_len(&sock->tx_queue) >= 2 * sock->remote_rw)) {
pr_err("Pending queue is full %d frames\n",
skb_queue_len(&sock->tx_pending_queue));
return -ENOBUFS;
@@ -541,7 +674,7 @@ int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock,
/* Remote is not ready and we've been queueing enough frames */
if ((!sock->remote_ready &&
- skb_queue_len(&sock->tx_queue) >= 2 * sock->rw)) {
+ skb_queue_len(&sock->tx_queue) >= 2 * sock->remote_rw)) {
pr_err("Tx queue is full %d frames\n",
skb_queue_len(&sock->tx_queue));
return -ENOBUFS;
@@ -561,7 +694,7 @@ int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock,
while (remaining_len > 0) {
- frag_len = min_t(size_t, sock->miu, remaining_len);
+ frag_len = min_t(size_t, sock->remote_miu, remaining_len);
pr_debug("Fragment %zd bytes remaining %zd",
frag_len, remaining_len);
@@ -621,7 +754,7 @@ int nfc_llcp_send_ui_frame(struct nfc_llcp_sock *sock, u8 ssap, u8 dsap,
while (remaining_len > 0) {
- frag_len = min_t(size_t, sock->miu, remaining_len);
+ frag_len = min_t(size_t, sock->remote_miu, remaining_len);
pr_debug("Fragment %zd bytes remaining %zd",
frag_len, remaining_len);
diff --git a/net/nfc/llcp/llcp.c b/net/nfc/llcp/llcp.c
index ee25f25f0cd..7de0368aff0 100644
--- a/net/nfc/llcp/llcp.c
+++ b/net/nfc/llcp/llcp.c
@@ -182,6 +182,9 @@ static void local_cleanup(struct nfc_llcp_local *local, bool listen)
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)
@@ -259,6 +262,47 @@ static void nfc_llcp_symm_timer(unsigned long data)
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;
@@ -802,8 +846,6 @@ static void nfc_llcp_recv_ui(struct nfc_llcp_local *local,
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 */
@@ -900,7 +942,9 @@ static void nfc_llcp_recv_connect(struct nfc_llcp_local *local,
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;
@@ -954,11 +998,11 @@ int nfc_llcp_queue_i_frames(struct nfc_llcp_sock *sock)
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);
@@ -1178,6 +1222,10 @@ static void nfc_llcp_recv_snl(struct nfc_llcp_local *local,
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);
@@ -1192,6 +1240,7 @@ static void nfc_llcp_recv_snl(struct nfc_llcp_local *local,
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];
@@ -1209,14 +1258,14 @@ static void nfc_llcp_recv_snl(struct nfc_llcp_local *local,
!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;
}
/*
@@ -1233,7 +1282,7 @@ static void nfc_llcp_recv_snl(struct nfc_llcp_local *local,
if (sap == LLCP_SAP_MAX) {
sap = 0;
- goto send_snl;
+ goto add_snl;
}
client_count =
@@ -1250,8 +1299,37 @@ static void nfc_llcp_recv_snl(struct nfc_llcp_local *local,
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:
@@ -1262,6 +1340,13 @@ send_snl:
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)
@@ -1447,6 +1532,13 @@ int nfc_llcp_register_device(struct nfc_dev *ndev)
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;
diff --git a/net/nfc/llcp/llcp.h b/net/nfc/llcp/llcp.h
index 0eae5c50950..7e87a66b02e 100644
--- a/net/nfc/llcp/llcp.h
+++ b/net/nfc/llcp/llcp.h
@@ -46,6 +46,19 @@ struct llcp_sock_list {
rwlock_t lock;
};
+struct nfc_llcp_sdp_tlv {
+ u8 *tlv;
+ u8 tlv_len;
+
+ char *uri;
+ u8 tid;
+ u8 sap;
+
+ unsigned long time;
+
+ struct hlist_node node;
+};
+
struct nfc_llcp_local {
struct list_head list;
struct nfc_dev *dev;
@@ -86,6 +99,12 @@ struct nfc_llcp_local {
u8 remote_opt;
u16 remote_wks;
+ struct mutex sdreq_lock;
+ struct hlist_head pending_sdreqs;
+ struct timer_list sdreq_timer;
+ struct work_struct sdreq_timeout_work;
+ u8 sdreq_next_tid;
+
/* sockets array */
struct llcp_sock_list sockets;
struct llcp_sock_list connecting_sockets;
@@ -105,7 +124,12 @@ struct nfc_llcp_sock {
char *service_name;
size_t service_name_len;
u8 rw;
- u16 miu;
+ u16 miux;
+
+
+ /* Remote link parameters */
+ u8 remote_rw;
+ u16 remote_miu;
/* Link variables */
u8 send_n;
@@ -213,12 +237,20 @@ int nfc_llcp_parse_connection_tlv(struct nfc_llcp_sock *sock,
/* Commands API */
void nfc_llcp_recv(void *data, struct sk_buff *skb, int err);
u8 *nfc_llcp_build_tlv(u8 type, u8 *value, u8 value_length, u8 *tlv_length);
+struct nfc_llcp_sdp_tlv *nfc_llcp_build_sdres_tlv(u8 tid, u8 sap);
+struct nfc_llcp_sdp_tlv *nfc_llcp_build_sdreq_tlv(u8 tid, char *uri,
+ size_t uri_len);
+void nfc_llcp_free_sdp_tlv(struct nfc_llcp_sdp_tlv *sdp);
+void nfc_llcp_free_sdp_tlv_list(struct hlist_head *sdp_head);
void nfc_llcp_recv(void *data, struct sk_buff *skb, int err);
int nfc_llcp_disconnect(struct nfc_llcp_sock *sock);
int nfc_llcp_send_symm(struct nfc_dev *dev);
int nfc_llcp_send_connect(struct nfc_llcp_sock *sock);
int nfc_llcp_send_cc(struct nfc_llcp_sock *sock);
-int nfc_llcp_send_snl(struct nfc_llcp_local *local, u8 tid, u8 sap);
+int nfc_llcp_send_snl_sdres(struct nfc_llcp_local *local,
+ struct hlist_head *tlv_list, size_t tlvs_len);
+int nfc_llcp_send_snl_sdreq(struct nfc_llcp_local *local,
+ struct hlist_head *tlv_list, size_t tlvs_len);
int nfc_llcp_send_dm(struct nfc_llcp_local *local, u8 ssap, u8 dsap, u8 reason);
int nfc_llcp_send_disconnect(struct nfc_llcp_sock *sock);
int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock,
diff --git a/net/nfc/llcp/sock.c b/net/nfc/llcp/sock.c
index 8f025746f33..6fa76704cb1 100644
--- a/net/nfc/llcp/sock.c
+++ b/net/nfc/llcp/sock.c
@@ -223,6 +223,124 @@ error:
return ret;
}
+static int nfc_llcp_setsockopt(struct socket *sock, int level, int optname,
+ char __user *optval, unsigned int optlen)
+{
+ struct sock *sk = sock->sk;
+ struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
+ u32 opt;
+ int err = 0;
+
+ pr_debug("%p optname %d\n", sk, optname);
+
+ if (level != SOL_NFC)
+ return -ENOPROTOOPT;
+
+ lock_sock(sk);
+
+ switch (optname) {
+ case NFC_LLCP_RW:
+ if (sk->sk_state == LLCP_CONNECTED ||
+ sk->sk_state == LLCP_BOUND ||
+ sk->sk_state == LLCP_LISTEN) {
+ err = -EINVAL;
+ break;
+ }
+
+ if (get_user(opt, (u32 __user *) optval)) {
+ err = -EFAULT;
+ break;
+ }
+
+ if (opt > LLCP_MAX_RW) {
+ err = -EINVAL;
+ break;
+ }
+
+ llcp_sock->rw = (u8) opt;
+
+ break;
+
+ case NFC_LLCP_MIUX:
+ if (sk->sk_state == LLCP_CONNECTED ||
+ sk->sk_state == LLCP_BOUND ||
+ sk->sk_state == LLCP_LISTEN) {
+ err = -EINVAL;
+ break;
+ }
+
+ if (get_user(opt, (u32 __user *) optval)) {
+ err = -EFAULT;
+ break;
+ }
+
+ if (opt > LLCP_MAX_MIUX) {
+ err = -EINVAL;
+ break;
+ }
+
+ llcp_sock->miux = (u16) opt;
+
+ break;
+
+ default:
+ err = -ENOPROTOOPT;
+ break;
+ }
+
+ release_sock(sk);
+
+ pr_debug("%p rw %d miux %d\n", llcp_sock,
+ llcp_sock->rw, llcp_sock->miux);
+
+ return err;
+}
+
+static int nfc_llcp_getsockopt(struct socket *sock, int level, int optname,
+ char __user *optval, int __user *optlen)
+{
+ struct sock *sk = sock->sk;
+ struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
+ int len, err = 0;
+
+ pr_debug("%p optname %d\n", sk, optname);
+
+ if (level != SOL_NFC)
+ return -ENOPROTOOPT;
+
+ if (get_user(len, optlen))
+ return -EFAULT;
+
+ len = min_t(u32, len, sizeof(u32));
+
+ lock_sock(sk);
+
+ switch (optname) {
+ case NFC_LLCP_RW:
+ if (put_user(llcp_sock->rw, (u32 __user *) optval))
+ err = -EFAULT;
+
+ break;
+
+ case NFC_LLCP_MIUX:
+ if (put_user(llcp_sock->miux, (u32 __user *) optval))
+ err = -EFAULT;
+
+ break;
+
+ default:
+ err = -ENOPROTOOPT;
+ break;
+ }
+
+ release_sock(sk);
+
+ if (put_user(len, optlen))
+ return -EFAULT;
+
+ return err;
+}
+
void nfc_llcp_accept_unlink(struct sock *sk)
{
struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
@@ -543,7 +661,7 @@ static int llcp_sock_connect(struct socket *sock, struct sockaddr *_addr,
llcp_sock->dev = dev;
llcp_sock->local = nfc_llcp_local_get(local);
- llcp_sock->miu = llcp_sock->local->remote_miu;
+ llcp_sock->remote_miu = llcp_sock->local->remote_miu;
llcp_sock->ssap = nfc_llcp_get_local_ssap(local);
if (llcp_sock->ssap == LLCP_SAP_MAX) {
ret = -ENOMEM;
@@ -737,8 +855,8 @@ static const struct proto_ops llcp_sock_ops = {
.ioctl = sock_no_ioctl,
.listen = llcp_sock_listen,
.shutdown = sock_no_shutdown,
- .setsockopt = sock_no_setsockopt,
- .getsockopt = sock_no_getsockopt,
+ .setsockopt = nfc_llcp_setsockopt,
+ .getsockopt = nfc_llcp_getsockopt,
.sendmsg = llcp_sock_sendmsg,
.recvmsg = llcp_sock_recvmsg,
.mmap = sock_no_mmap,
@@ -802,8 +920,10 @@ struct sock *nfc_llcp_sock_alloc(struct socket *sock, int type, gfp_t gfp)
llcp_sock->ssap = 0;
llcp_sock->dsap = LLCP_SAP_SDP;
- llcp_sock->rw = LLCP_DEFAULT_RW;
- llcp_sock->miu = LLCP_DEFAULT_MIU;
+ llcp_sock->rw = LLCP_MAX_RW + 1;
+ llcp_sock->miux = LLCP_MAX_MIUX + 1;
+ llcp_sock->remote_rw = LLCP_DEFAULT_RW;
+ llcp_sock->remote_miu = LLCP_DEFAULT_MIU;
llcp_sock->send_n = llcp_sock->send_ack_n = 0;
llcp_sock->recv_n = llcp_sock->recv_ack_n = 0;
llcp_sock->remote_ready = 1;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-02 11:42:02 +0000