forked from Minki/linux
[Bluetooth] Small cleanup of the L2CAP source code
This patch is a small cleanup of the L2CAP source code. It makes some coding style changes and moves some functions around to avoid forward declarations. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Marcel Holtmann
David S. Miller
parent
a91f2e396f
commit
0139418c94
@ -63,11 +63,6 @@ static struct bt_sock_list l2cap_sk_list = {
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.lock = RW_LOCK_UNLOCKED
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.lock = RW_LOCK_UNLOCKED
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};
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};
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static int l2cap_conn_del(struct hci_conn *conn, int err);
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static void __l2cap_chan_add(struct l2cap_conn *conn, struct sock *sk, struct sock *parent);
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static void l2cap_chan_del(struct sock *sk, int err);
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static void __l2cap_sock_close(struct sock *sk, int reason);
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static void __l2cap_sock_close(struct sock *sk, int reason);
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static void l2cap_sock_close(struct sock *sk);
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static void l2cap_sock_close(struct sock *sk);
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static void l2cap_sock_kill(struct sock *sk);
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static void l2cap_sock_kill(struct sock *sk);
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@ -109,24 +104,177 @@ static void l2cap_sock_init_timer(struct sock *sk)
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sk->sk_timer.data = (unsigned long)sk;
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sk->sk_timer.data = (unsigned long)sk;
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}
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}
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/* ---- L2CAP channels ---- */
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static struct sock *__l2cap_get_chan_by_dcid(struct l2cap_chan_list *l, u16 cid)
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{
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struct sock *s;
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for (s = l->head; s; s = l2cap_pi(s)->next_c) {
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if (l2cap_pi(s)->dcid == cid)
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break;
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}
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return s;
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}
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static struct sock *__l2cap_get_chan_by_scid(struct l2cap_chan_list *l, u16 cid)
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{
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struct sock *s;
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for (s = l->head; s; s = l2cap_pi(s)->next_c) {
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if (l2cap_pi(s)->scid == cid)
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break;
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}
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return s;
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}
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/* Find channel with given SCID.
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* Returns locked socket */
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static inline struct sock *l2cap_get_chan_by_scid(struct l2cap_chan_list *l, u16 cid)
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{
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struct sock *s;
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read_lock(&l->lock);
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s = __l2cap_get_chan_by_scid(l, cid);
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if (s) bh_lock_sock(s);
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read_unlock(&l->lock);
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return s;
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}
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static struct sock *__l2cap_get_chan_by_ident(struct l2cap_chan_list *l, u8 ident)
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{
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struct sock *s;
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for (s = l->head; s; s = l2cap_pi(s)->next_c) {
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if (l2cap_pi(s)->ident == ident)
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break;
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}
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return s;
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}
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static inline struct sock *l2cap_get_chan_by_ident(struct l2cap_chan_list *l, u8 ident)
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{
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struct sock *s;
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read_lock(&l->lock);
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s = __l2cap_get_chan_by_ident(l, ident);
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if (s) bh_lock_sock(s);
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read_unlock(&l->lock);
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return s;
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}
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static u16 l2cap_alloc_cid(struct l2cap_chan_list *l)
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{
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u16 cid = 0x0040;
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for (; cid < 0xffff; cid++) {
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if(!__l2cap_get_chan_by_scid(l, cid))
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return cid;
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}
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return 0;
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}
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static inline void __l2cap_chan_link(struct l2cap_chan_list *l, struct sock *sk)
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{
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sock_hold(sk);
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if (l->head)
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l2cap_pi(l->head)->prev_c = sk;
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l2cap_pi(sk)->next_c = l->head;
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l2cap_pi(sk)->prev_c = NULL;
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l->head = sk;
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}
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static inline void l2cap_chan_unlink(struct l2cap_chan_list *l, struct sock *sk)
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{
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struct sock *next = l2cap_pi(sk)->next_c, *prev = l2cap_pi(sk)->prev_c;
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write_lock(&l->lock);
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if (sk == l->head)
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l->head = next;
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if (next)
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l2cap_pi(next)->prev_c = prev;
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if (prev)
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l2cap_pi(prev)->next_c = next;
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write_unlock(&l->lock);
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__sock_put(sk);
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}
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static void __l2cap_chan_add(struct l2cap_conn *conn, struct sock *sk, struct sock *parent)
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{
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struct l2cap_chan_list *l = &conn->chan_list;
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BT_DBG("conn %p, psm 0x%2.2x, dcid 0x%4.4x", conn, l2cap_pi(sk)->psm, l2cap_pi(sk)->dcid);
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l2cap_pi(sk)->conn = conn;
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if (sk->sk_type == SOCK_SEQPACKET) {
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/* Alloc CID for connection-oriented socket */
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l2cap_pi(sk)->scid = l2cap_alloc_cid(l);
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} else if (sk->sk_type == SOCK_DGRAM) {
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/* Connectionless socket */
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l2cap_pi(sk)->scid = 0x0002;
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l2cap_pi(sk)->dcid = 0x0002;
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l2cap_pi(sk)->omtu = L2CAP_DEFAULT_MTU;
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} else {
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/* Raw socket can send/recv signalling messages only */
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l2cap_pi(sk)->scid = 0x0001;
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l2cap_pi(sk)->dcid = 0x0001;
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l2cap_pi(sk)->omtu = L2CAP_DEFAULT_MTU;
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}
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__l2cap_chan_link(l, sk);
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if (parent)
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bt_accept_enqueue(parent, sk);
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}
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/* Delete channel.
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* Must be called on the locked socket. */
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static void l2cap_chan_del(struct sock *sk, int err)
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{
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struct l2cap_conn *conn = l2cap_pi(sk)->conn;
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struct sock *parent = bt_sk(sk)->parent;
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l2cap_sock_clear_timer(sk);
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BT_DBG("sk %p, conn %p, err %d", sk, conn, err);
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if (conn) {
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/* Unlink from channel list */
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l2cap_chan_unlink(&conn->chan_list, sk);
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l2cap_pi(sk)->conn = NULL;
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hci_conn_put(conn->hcon);
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}
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sk->sk_state = BT_CLOSED;
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sock_set_flag(sk, SOCK_ZAPPED);
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if (err)
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sk->sk_err = err;
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if (parent) {
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bt_accept_unlink(sk);
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parent->sk_data_ready(parent, 0);
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} else
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sk->sk_state_change(sk);
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}
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/* ---- L2CAP connections ---- */
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/* ---- L2CAP connections ---- */
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static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon, u8 status)
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static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon, u8 status)
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{
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{
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struct l2cap_conn *conn;
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struct l2cap_conn *conn = hcon->l2cap_data;
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if ((conn = hcon->l2cap_data))
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if (conn || status)
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return conn;
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return conn;
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if (status)
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conn = kzalloc(sizeof(struct l2cap_conn), GFP_ATOMIC);
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return conn;
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if (!conn)
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if (!(conn = kmalloc(sizeof(struct l2cap_conn), GFP_ATOMIC)))
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return NULL;
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return NULL;
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memset(conn, 0, sizeof(struct l2cap_conn));
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hcon->l2cap_data = conn;
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hcon->l2cap_data = conn;
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conn->hcon = hcon;
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conn->hcon = hcon;
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BT_DBG("hcon %p conn %p", hcon, conn);
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conn->mtu = hcon->hdev->acl_mtu;
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conn->mtu = hcon->hdev->acl_mtu;
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conn->src = &hcon->hdev->bdaddr;
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conn->src = &hcon->hdev->bdaddr;
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conn->dst = &hcon->dst;
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conn->dst = &hcon->dst;
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@ -134,17 +282,16 @@ static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon, u8 status)
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spin_lock_init(&conn->lock);
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spin_lock_init(&conn->lock);
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rwlock_init(&conn->chan_list.lock);
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rwlock_init(&conn->chan_list.lock);
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BT_DBG("hcon %p conn %p", hcon, conn);
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return conn;
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return conn;
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}
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}
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static int l2cap_conn_del(struct hci_conn *hcon, int err)
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static void l2cap_conn_del(struct hci_conn *hcon, int err)
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{
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{
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struct l2cap_conn *conn;
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struct l2cap_conn *conn = hcon->l2cap_data;
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struct sock *sk;
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struct sock *sk;
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if (!(conn = hcon->l2cap_data))
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if (!conn)
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return 0;
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return;
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BT_DBG("hcon %p conn %p, err %d", hcon, conn, err);
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BT_DBG("hcon %p conn %p, err %d", hcon, conn, err);
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@ -161,7 +308,6 @@ static int l2cap_conn_del(struct hci_conn *hcon, int err)
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hcon->l2cap_data = NULL;
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hcon->l2cap_data = NULL;
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kfree(conn);
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kfree(conn);
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return 0;
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}
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}
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static inline void l2cap_chan_add(struct l2cap_conn *conn, struct sock *sk, struct sock *parent)
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static inline void l2cap_chan_add(struct l2cap_conn *conn, struct sock *sk, struct sock *parent)
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@ -925,160 +1071,6 @@ static int l2cap_sock_release(struct socket *sock)
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return err;
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return err;
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}
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}
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/* ---- L2CAP channels ---- */
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static struct sock *__l2cap_get_chan_by_dcid(struct l2cap_chan_list *l, u16 cid)
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{
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struct sock *s;
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for (s = l->head; s; s = l2cap_pi(s)->next_c) {
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if (l2cap_pi(s)->dcid == cid)
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break;
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}
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return s;
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}
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static struct sock *__l2cap_get_chan_by_scid(struct l2cap_chan_list *l, u16 cid)
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{
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struct sock *s;
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for (s = l->head; s; s = l2cap_pi(s)->next_c) {
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if (l2cap_pi(s)->scid == cid)
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break;
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}
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return s;
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}
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/* Find channel with given SCID.
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* Returns locked socket */
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static inline struct sock *l2cap_get_chan_by_scid(struct l2cap_chan_list *l, u16 cid)
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{
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struct sock *s;
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read_lock(&l->lock);
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s = __l2cap_get_chan_by_scid(l, cid);
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if (s) bh_lock_sock(s);
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read_unlock(&l->lock);
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return s;
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}
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static struct sock *__l2cap_get_chan_by_ident(struct l2cap_chan_list *l, u8 ident)
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{
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struct sock *s;
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for (s = l->head; s; s = l2cap_pi(s)->next_c) {
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if (l2cap_pi(s)->ident == ident)
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break;
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}
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return s;
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}
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static inline struct sock *l2cap_get_chan_by_ident(struct l2cap_chan_list *l, u8 ident)
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{
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struct sock *s;
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read_lock(&l->lock);
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s = __l2cap_get_chan_by_ident(l, ident);
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if (s) bh_lock_sock(s);
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read_unlock(&l->lock);
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return s;
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}
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static u16 l2cap_alloc_cid(struct l2cap_chan_list *l)
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{
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u16 cid = 0x0040;
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for (; cid < 0xffff; cid++) {
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if(!__l2cap_get_chan_by_scid(l, cid))
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return cid;
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}
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return 0;
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}
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static inline void __l2cap_chan_link(struct l2cap_chan_list *l, struct sock *sk)
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{
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sock_hold(sk);
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if (l->head)
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l2cap_pi(l->head)->prev_c = sk;
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l2cap_pi(sk)->next_c = l->head;
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l2cap_pi(sk)->prev_c = NULL;
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l->head = sk;
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}
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static inline void l2cap_chan_unlink(struct l2cap_chan_list *l, struct sock *sk)
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{
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struct sock *next = l2cap_pi(sk)->next_c, *prev = l2cap_pi(sk)->prev_c;
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write_lock(&l->lock);
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if (sk == l->head)
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l->head = next;
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if (next)
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l2cap_pi(next)->prev_c = prev;
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if (prev)
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l2cap_pi(prev)->next_c = next;
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write_unlock(&l->lock);
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__sock_put(sk);
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}
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static void __l2cap_chan_add(struct l2cap_conn *conn, struct sock *sk, struct sock *parent)
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{
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struct l2cap_chan_list *l = &conn->chan_list;
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BT_DBG("conn %p, psm 0x%2.2x, dcid 0x%4.4x", conn, l2cap_pi(sk)->psm, l2cap_pi(sk)->dcid);
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l2cap_pi(sk)->conn = conn;
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if (sk->sk_type == SOCK_SEQPACKET) {
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/* Alloc CID for connection-oriented socket */
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l2cap_pi(sk)->scid = l2cap_alloc_cid(l);
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} else if (sk->sk_type == SOCK_DGRAM) {
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/* Connectionless socket */
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l2cap_pi(sk)->scid = 0x0002;
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l2cap_pi(sk)->dcid = 0x0002;
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l2cap_pi(sk)->omtu = L2CAP_DEFAULT_MTU;
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} else {
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/* Raw socket can send/recv signalling messages only */
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l2cap_pi(sk)->scid = 0x0001;
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l2cap_pi(sk)->dcid = 0x0001;
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l2cap_pi(sk)->omtu = L2CAP_DEFAULT_MTU;
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}
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__l2cap_chan_link(l, sk);
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if (parent)
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bt_accept_enqueue(parent, sk);
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}
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/* Delete channel.
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* Must be called on the locked socket. */
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static void l2cap_chan_del(struct sock *sk, int err)
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{
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struct l2cap_conn *conn = l2cap_pi(sk)->conn;
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struct sock *parent = bt_sk(sk)->parent;
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l2cap_sock_clear_timer(sk);
|
|
||||||
|
|
||||||
BT_DBG("sk %p, conn %p, err %d", sk, conn, err);
|
|
||||||
|
|
||||||
if (conn) {
|
|
||||||
/* Unlink from channel list */
|
|
||||||
l2cap_chan_unlink(&conn->chan_list, sk);
|
|
||||||
l2cap_pi(sk)->conn = NULL;
|
|
||||||
hci_conn_put(conn->hcon);
|
|
||||||
}
|
|
||||||
|
|
||||||
sk->sk_state = BT_CLOSED;
|
|
||||||
sock_set_flag(sk, SOCK_ZAPPED);
|
|
||||||
|
|
||||||
if (err)
|
|
||||||
sk->sk_err = err;
|
|
||||||
|
|
||||||
if (parent) {
|
|
||||||
bt_accept_unlink(sk);
|
|
||||||
parent->sk_data_ready(parent, 0);
|
|
||||||
} else
|
|
||||||
sk->sk_state_change(sk);
|
|
||||||
}
|
|
||||||
|
|
||||||
static void l2cap_conn_ready(struct l2cap_conn *conn)
|
static void l2cap_conn_ready(struct l2cap_conn *conn)
|
||||||
{
|
{
|
||||||
struct l2cap_chan_list *l = &conn->chan_list;
|
struct l2cap_chan_list *l = &conn->chan_list;
|
||||||
@ -1834,7 +1826,9 @@ drop:
|
|||||||
kfree_skb(skb);
|
kfree_skb(skb);
|
||||||
|
|
||||||
done:
|
done:
|
||||||
if (sk) bh_unlock_sock(sk);
|
if (sk)
|
||||||
|
bh_unlock_sock(sk);
|
||||||
|
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
@ -1925,14 +1919,14 @@ static int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type)
|
|||||||
|
|
||||||
static int l2cap_connect_cfm(struct hci_conn *hcon, u8 status)
|
static int l2cap_connect_cfm(struct hci_conn *hcon, u8 status)
|
||||||
{
|
{
|
||||||
|
struct l2cap_conn *conn;
|
||||||
|
|
||||||
BT_DBG("hcon %p bdaddr %s status %d", hcon, batostr(&hcon->dst), status);
|
BT_DBG("hcon %p bdaddr %s status %d", hcon, batostr(&hcon->dst), status);
|
||||||
|
|
||||||
if (hcon->type != ACL_LINK)
|
if (hcon->type != ACL_LINK)
|
||||||
return 0;
|
return 0;
|
||||||
|
|
||||||
if (!status) {
|
if (!status) {
|
||||||
struct l2cap_conn *conn;
|
|
||||||
|
|
||||||
conn = l2cap_conn_add(hcon, status);
|
conn = l2cap_conn_add(hcon, status);
|
||||||
if (conn)
|
if (conn)
|
||||||
l2cap_conn_ready(conn);
|
l2cap_conn_ready(conn);
|
||||||
@ -1950,19 +1944,21 @@ static int l2cap_disconn_ind(struct hci_conn *hcon, u8 reason)
|
|||||||
return 0;
|
return 0;
|
||||||
|
|
||||||
l2cap_conn_del(hcon, bt_err(reason));
|
l2cap_conn_del(hcon, bt_err(reason));
|
||||||
|
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
static int l2cap_auth_cfm(struct hci_conn *hcon, u8 status)
|
static int l2cap_auth_cfm(struct hci_conn *hcon, u8 status)
|
||||||
{
|
{
|
||||||
struct l2cap_chan_list *l;
|
struct l2cap_chan_list *l;
|
||||||
struct l2cap_conn *conn;
|
struct l2cap_conn *conn = conn = hcon->l2cap_data;
|
||||||
struct l2cap_conn_rsp rsp;
|
struct l2cap_conn_rsp rsp;
|
||||||
struct sock *sk;
|
struct sock *sk;
|
||||||
int result;
|
int result;
|
||||||
|
|
||||||
if (!(conn = hcon->l2cap_data))
|
if (!conn)
|
||||||
return 0;
|
return 0;
|
||||||
|
|
||||||
l = &conn->chan_list;
|
l = &conn->chan_list;
|
||||||
|
|
||||||
BT_DBG("conn %p", conn);
|
BT_DBG("conn %p", conn);
|
||||||
@ -2005,13 +2001,14 @@ static int l2cap_auth_cfm(struct hci_conn *hcon, u8 status)
|
|||||||
static int l2cap_encrypt_cfm(struct hci_conn *hcon, u8 status)
|
static int l2cap_encrypt_cfm(struct hci_conn *hcon, u8 status)
|
||||||
{
|
{
|
||||||
struct l2cap_chan_list *l;
|
struct l2cap_chan_list *l;
|
||||||
struct l2cap_conn *conn;
|
struct l2cap_conn *conn = hcon->l2cap_data;
|
||||||
struct l2cap_conn_rsp rsp;
|
struct l2cap_conn_rsp rsp;
|
||||||
struct sock *sk;
|
struct sock *sk;
|
||||||
int result;
|
int result;
|
||||||
|
|
||||||
if (!(conn = hcon->l2cap_data))
|
if (!conn)
|
||||||
return 0;
|
return 0;
|
||||||
|
|
||||||
l = &conn->chan_list;
|
l = &conn->chan_list;
|
||||||
|
|
||||||
BT_DBG("conn %p", conn);
|
BT_DBG("conn %p", conn);
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user