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Bluetooth: ISO: Allow binding a PA sync socket

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This makes it possible to bind a PA sync socket to a number of BISes
before issuing the BIG Create Sync command.

Signed-off-by: Iulia Tanasescu <iulia.tanasescu@nxp.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Iulia Tanasescu 2023-10-24 13:57:35 +03:00 committed by Luiz Augusto von Dentz
parent 27c346a22f
commit 80837140c1
1 changed files with 62 additions and 5 deletions
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67
net/bluetooth/iso.c
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@ -792,27 +792,75 @@ static int iso_sock_bind_bc(struct socket *sock, struct sockaddr *addr,
BT_DBG("sk %p bc_sid %u bc_num_bis %u", sk, sa->iso_bc->bc_sid,
sa->iso_bc->bc_num_bis);
if (addr_len > sizeof(*sa) + sizeof(*sa->iso_bc))
if (addr_len != sizeof(*sa) + sizeof(*sa->iso_bc))
return -EINVAL;
bacpy(&iso_pi(sk)->dst, &sa->iso_bc->bc_bdaddr);
/* Check if the address type is of LE type */
if (!bdaddr_type_is_le(sa->iso_bc->bc_bdaddr_type))
return -EINVAL;
iso_pi(sk)->dst_type = sa->iso_bc->bc_bdaddr_type;
iso_pi(sk)->sync_handle = -1;
if (sa->iso_bc->bc_sid > 0x0f)
return -EINVAL;
iso_pi(sk)->bc_sid = sa->iso_bc->bc_sid;
if (sa->iso_bc->bc_num_bis > ISO_MAX_NUM_BIS)
return -EINVAL;
iso_pi(sk)->bc_num_bis = sa->iso_bc->bc_num_bis;
for (i = 0; i < iso_pi(sk)->bc_num_bis; i++) {
for (i = 0; i < iso_pi(sk)->bc_num_bis; i++)
if (sa->iso_bc->bc_bis[i] < 0x01 ||
sa->iso_bc->bc_bis[i] > 0x1f)
return -EINVAL;
memcpy(iso_pi(sk)->bc_bis, sa->iso_bc->bc_bis,
iso_pi(sk)->bc_num_bis);
}
memcpy(iso_pi(sk)->bc_bis, sa->iso_bc->bc_bis,
iso_pi(sk)->bc_num_bis);
return 0;
}
static int iso_sock_bind_pa_sk(struct sock *sk, struct sockaddr_iso *sa,
int addr_len)
{
int err = 0;
if (sk->sk_type != SOCK_SEQPACKET) {
err = -EINVAL;
goto done;
}
if (addr_len != sizeof(*sa) + sizeof(*sa->iso_bc)) {
err = -EINVAL;
goto done;
}
if (sa->iso_bc->bc_num_bis > ISO_MAX_NUM_BIS) {
err = -EINVAL;
goto done;
}
iso_pi(sk)->bc_num_bis = sa->iso_bc->bc_num_bis;
for (int i = 0; i < iso_pi(sk)->bc_num_bis; i++)
if (sa->iso_bc->bc_bis[i] < 0x01 ||
sa->iso_bc->bc_bis[i] > 0x1f) {
err = -EINVAL;
goto done;
}
memcpy(iso_pi(sk)->bc_bis, sa->iso_bc->bc_bis,
iso_pi(sk)->bc_num_bis);
done:
return err;
}
static int iso_sock_bind(struct socket *sock, struct sockaddr *addr,
int addr_len)
{
@ -828,6 +876,15 @@ static int iso_sock_bind(struct socket *sock, struct sockaddr *addr,
lock_sock(sk);
/* Allow the user to bind a PA sync socket to a number
* of BISes to sync to.
*/
if (sk->sk_state == BT_CONNECT2 &&
test_bit(BT_SK_PA_SYNC, &iso_pi(sk)->flags)) {
err = iso_sock_bind_pa_sk(sk, sa, addr_len);
goto done;
}
if (sk->sk_state != BT_OPEN) {
err = -EBADFD;
goto done;