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-rw-r--r--net/nfc/llcp/commands.c82
-rw-r--r--net/nfc/llcp/llcp.c23
-rw-r--r--net/nfc/llcp/llcp.h16
3 files changed, 94 insertions, 27 deletions
diff --git a/net/nfc/llcp/commands.c b/net/nfc/llcp/commands.c
index 5f61830a0e8..59f7ffca783 100644
--- a/net/nfc/llcp/commands.c
+++ b/net/nfc/llcp/commands.c
@@ -117,6 +117,39 @@ 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;
+}
+
+void nfc_llcp_free_sdp_tlv(struct nfc_llcp_sdp_tlv *sdp)
+{
+ kfree(sdp->tlv);
+ kfree(sdp);
+}
+
int nfc_llcp_parse_gb_tlv(struct nfc_llcp_local *local,
u8 *tlv_array, u16 tlv_array_len)
{
@@ -425,48 +458,55 @@ 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;
+}
- skb_queue_tail(&local->tx_queue, 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);
- kfree(sdres_tlv);
+ hlist_del(&sdp->node);
+
+ nfc_llcp_free_sdp_tlv(sdp);
+ }
+
+ skb_queue_tail(&local->tx_queue, skb);
return 0;
}
diff --git a/net/nfc/llcp/llcp.c b/net/nfc/llcp/llcp.c
index 15e7e002428..30b61c1aa98 100644
--- a/net/nfc/llcp/llcp.c
+++ b/net/nfc/llcp/llcp.c
@@ -1144,6 +1144,9 @@ 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;
dsap = nfc_llcp_dsap(skb);
ssap = nfc_llcp_ssap(skb);
@@ -1158,6 +1161,7 @@ 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];
@@ -1175,14 +1179,14 @@ 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;
}
/*
@@ -1199,7 +1203,7 @@ 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 =
@@ -1216,8 +1220,13 @@ 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;
default:
@@ -1228,6 +1237,10 @@ send_snl:
offset += length + 2;
tlv += length + 2;
}
+
+exit:
+ 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)
diff --git a/net/nfc/llcp/llcp.h b/net/nfc/llcp/llcp.h
index 5f117adac2e..465f5953e2d 100644
--- a/net/nfc/llcp/llcp.h
+++ b/net/nfc/llcp/llcp.h
@@ -46,6 +46,17 @@ struct llcp_sock_list {
rwlock_t lock;
};
+struct nfc_llcp_sdp_tlv {
+ u8 *tlv;
+ u8 tlv_len;
+
+ char *uri;
+ u8 tid;
+ u8 sap;
+
+ struct hlist_node node;
+};
+
struct nfc_llcp_local {
struct list_head list;
struct nfc_dev *dev;
@@ -218,12 +229,15 @@ 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);
+void nfc_llcp_free_sdp_tlv(struct nfc_llcp_sdp_tlv *sdp);
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_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,
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-30 19:05:34 +0000