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)
{
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;
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;
}
skb = llcp_add_header(skb, 0, 0, LLCP_PDU_SYMM);
+ __net_timestamp(skb);
+
nfc_llcp_send_to_raw_sock(local, skb, NFC_LLCP_DIRECTION_TX);
return nfc_data_exchange(dev, local->target_idx, skb,
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");
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);
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");
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);
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;
}
/* 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;
/* 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;
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);
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);
projects / firefly-linux-kernel-4.4.55.git / blobdiff