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Diffstat (limited to 'net/nfc/llcp_core.c')
-rw-r--r--net/nfc/llcp_core.c58
1 files changed, 26 insertions, 32 deletions
diff --git a/net/nfc/llcp_core.c b/net/nfc/llcp_core.c
index cc997518f79d..3364caabef8b 100644
--- a/net/nfc/llcp_core.c
+++ b/net/nfc/llcp_core.c
@@ -45,8 +45,6 @@ static void nfc_llcp_socket_purge(struct nfc_llcp_sock *sock)
struct nfc_llcp_local *local = sock->local;
struct sk_buff *s, *tmp;
- pr_debug("%p\n", &sock->sk);
-
skb_queue_purge(&sock->tx_queue);
skb_queue_purge(&sock->tx_pending_queue);
@@ -301,7 +299,7 @@ static char *wks[] = {
"urn:nfc:sn:snep",
};
-static int nfc_llcp_wks_sap(char *service_name, size_t service_name_len)
+static int nfc_llcp_wks_sap(const char *service_name, size_t service_name_len)
{
int sap, num_wks;
@@ -325,7 +323,7 @@ static int nfc_llcp_wks_sap(char *service_name, size_t service_name_len)
static
struct nfc_llcp_sock *nfc_llcp_sock_from_sn(struct nfc_llcp_local *local,
- u8 *sn, size_t sn_len)
+ const u8 *sn, size_t sn_len)
{
struct sock *sk;
struct nfc_llcp_sock *llcp_sock, *tmp_sock;
@@ -385,7 +383,7 @@ u8 nfc_llcp_get_sdp_ssap(struct nfc_llcp_local *local,
pr_debug("WKS %d\n", ssap);
/* This is a WKS, let's check if it's free */
- if (local->local_wks & BIT(ssap)) {
+ if (test_bit(ssap, &local->local_wks)) {
mutex_unlock(&local->sdp_lock);
return LLCP_SAP_MAX;
@@ -522,7 +520,7 @@ static int nfc_llcp_build_gb(struct nfc_llcp_local *local)
{
u8 *gb_cur, version, version_length;
u8 lto_length, wks_length, miux_length;
- u8 *version_tlv = NULL, *lto_tlv = NULL,
+ const u8 *version_tlv = NULL, *lto_tlv = NULL,
*wks_tlv = NULL, *miux_tlv = NULL;
__be16 wks = cpu_to_be16(local->local_wks);
u8 gb_len = 0;
@@ -612,7 +610,7 @@ u8 *nfc_llcp_general_bytes(struct nfc_dev *dev, size_t *general_bytes_len)
return local->gb;
}
-int nfc_llcp_set_remote_gb(struct nfc_dev *dev, u8 *gb, u8 gb_len)
+int nfc_llcp_set_remote_gb(struct nfc_dev *dev, const u8 *gb, u8 gb_len)
{
struct nfc_llcp_local *local;
@@ -639,27 +637,27 @@ int nfc_llcp_set_remote_gb(struct nfc_dev *dev, u8 *gb, u8 gb_len)
local->remote_gb_len - 3);
}
-static u8 nfc_llcp_dsap(struct sk_buff *pdu)
+static u8 nfc_llcp_dsap(const struct sk_buff *pdu)
{
return (pdu->data[0] & 0xfc) >> 2;
}
-static u8 nfc_llcp_ptype(struct sk_buff *pdu)
+static u8 nfc_llcp_ptype(const struct sk_buff *pdu)
{
return ((pdu->data[0] & 0x03) << 2) | ((pdu->data[1] & 0xc0) >> 6);
}
-static u8 nfc_llcp_ssap(struct sk_buff *pdu)
+static u8 nfc_llcp_ssap(const struct sk_buff *pdu)
{
return pdu->data[1] & 0x3f;
}
-static u8 nfc_llcp_ns(struct sk_buff *pdu)
+static u8 nfc_llcp_ns(const struct sk_buff *pdu)
{
return pdu->data[2] >> 4;
}
-static u8 nfc_llcp_nr(struct sk_buff *pdu)
+static u8 nfc_llcp_nr(const struct sk_buff *pdu)
{
return pdu->data[2] & 0xf;
}
@@ -739,13 +737,6 @@ static void nfc_llcp_tx_work(struct work_struct *work)
print_hex_dump_debug("LLCP Tx: ", DUMP_PREFIX_OFFSET,
16, 1, skb->data, skb->len, true);
- if (ptype == LLCP_PDU_DISC && sk != NULL &&
- sk->sk_state == LLCP_DISCONNECTING) {
- nfc_llcp_sock_unlink(&local->sockets, sk);
- sock_orphan(sk);
- sock_put(sk);
- }
-
if (ptype == LLCP_PDU_I)
copy_skb = skb_copy(skb, GFP_ATOMIC);
@@ -801,7 +792,7 @@ out:
}
static struct nfc_llcp_sock *nfc_llcp_sock_get_sn(struct nfc_llcp_local *local,
- u8 *sn, size_t sn_len)
+ const u8 *sn, size_t sn_len)
{
struct nfc_llcp_sock *llcp_sock;
@@ -815,9 +806,10 @@ static struct nfc_llcp_sock *nfc_llcp_sock_get_sn(struct nfc_llcp_local *local,
return llcp_sock;
}
-static u8 *nfc_llcp_connect_sn(struct sk_buff *skb, size_t *sn_len)
+static const u8 *nfc_llcp_connect_sn(const struct sk_buff *skb, size_t *sn_len)
{
- u8 *tlv = &skb->data[2], type, length;
+ u8 type, length;
+ const u8 *tlv = &skb->data[2];
size_t tlv_array_len = skb->len - LLCP_HEADER_SIZE, offset = 0;
while (offset < tlv_array_len) {
@@ -875,7 +867,7 @@ static void nfc_llcp_recv_ui(struct nfc_llcp_local *local,
}
static void nfc_llcp_recv_connect(struct nfc_llcp_local *local,
- struct sk_buff *skb)
+ const struct sk_buff *skb)
{
struct sock *new_sk, *parent;
struct nfc_llcp_sock *sock, *new_sock;
@@ -893,7 +885,7 @@ static void nfc_llcp_recv_connect(struct nfc_llcp_local *local,
goto fail;
}
} else {
- u8 *sn;
+ const u8 *sn;
size_t sn_len;
sn = nfc_llcp_connect_sn(skb, &sn_len);
@@ -1112,7 +1104,7 @@ static void nfc_llcp_recv_hdlc(struct nfc_llcp_local *local,
}
static void nfc_llcp_recv_disc(struct nfc_llcp_local *local,
- struct sk_buff *skb)
+ const struct sk_buff *skb)
{
struct nfc_llcp_sock *llcp_sock;
struct sock *sk;
@@ -1155,7 +1147,8 @@ static void nfc_llcp_recv_disc(struct nfc_llcp_local *local,
nfc_llcp_sock_put(llcp_sock);
}
-static void nfc_llcp_recv_cc(struct nfc_llcp_local *local, struct sk_buff *skb)
+static void nfc_llcp_recv_cc(struct nfc_llcp_local *local,
+ const struct sk_buff *skb)
{
struct nfc_llcp_sock *llcp_sock;
struct sock *sk;
@@ -1188,7 +1181,8 @@ static void nfc_llcp_recv_cc(struct nfc_llcp_local *local, struct sk_buff *skb)
nfc_llcp_sock_put(llcp_sock);
}
-static void nfc_llcp_recv_dm(struct nfc_llcp_local *local, struct sk_buff *skb)
+static void nfc_llcp_recv_dm(struct nfc_llcp_local *local,
+ const struct sk_buff *skb)
{
struct nfc_llcp_sock *llcp_sock;
struct sock *sk;
@@ -1226,12 +1220,13 @@ static void nfc_llcp_recv_dm(struct nfc_llcp_local *local, struct sk_buff *skb)
}
static void nfc_llcp_recv_snl(struct nfc_llcp_local *local,
- struct sk_buff *skb)
+ const struct sk_buff *skb)
{
struct nfc_llcp_sock *llcp_sock;
- u8 dsap, ssap, *tlv, type, length, tid, sap;
+ u8 dsap, ssap, type, length, tid, sap;
+ const u8 *tlv;
u16 tlv_len, offset;
- char *service_name;
+ const char *service_name;
size_t service_name_len;
struct nfc_llcp_sdp_tlv *sdp;
HLIST_HEAD(llc_sdres_list);
@@ -1501,9 +1496,8 @@ void nfc_llcp_recv(void *data, struct sk_buff *skb, int err)
{
struct nfc_llcp_local *local = (struct nfc_llcp_local *) data;
- pr_debug("Received an LLCP PDU\n");
if (err < 0) {
- pr_err("err %d\n", err);
+ pr_err("LLCP PDU receive err %d\n", err);
return;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.