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Bluetooth: set skbuffer priority based on L2CAP socket priority 

This uses SO_PRIORITY to set the skbuffer priority field

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This commit is contained in:
Luiz Augusto von Dentz 2011-11-01 10:58:57 +02:00 committed by Gustavo F. Padovan
parent 8035ded466
commit 5e59b791c3
4 changed files with 26 additions and 9 deletions
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3
include/net/bluetooth/hci_core.h
View File

@ -32,6 +32,9 @@
#define HCI_PROTO_L2CAP 0
#define HCI_PROTO_SCO 1
/* HCI priority */
#define HCI_PRIO_MAX 7
/* HCI Core structures */
struct inquiry_data {
bdaddr_t bdaddr;

3
include/net/bluetooth/l2cap.h
View File

@ -747,7 +747,8 @@ struct l2cap_chan *l2cap_chan_create(struct sock *sk);
void l2cap_chan_close(struct l2cap_chan *chan, int reason);
void l2cap_chan_destroy(struct l2cap_chan *chan);
int l2cap_chan_connect(struct l2cap_chan *chan);
int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len);
int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len,
u32 priority);
void l2cap_chan_busy(struct l2cap_chan *chan, int busy);
#endif /* __L2CAP_H */

27
net/bluetooth/l2cap_core.c
View File

@ -564,6 +564,7 @@ static void l2cap_send_cmd(struct l2cap_conn *conn, u8 ident, u8 code, u16 len,
flags = ACL_START;
bt_cb(skb)->force_active = BT_POWER_FORCE_ACTIVE_ON;
skb->priority = HCI_PRIO_MAX;
hci_send_acl(conn->hcon, skb, flags);
}
@ -1265,7 +1266,8 @@ static void l2cap_do_send(struct l2cap_chan *chan, struct sk_buff *skb)
struct hci_conn *hcon = chan->conn->hcon;
u16 flags;
BT_DBG("chan %p, skb %p len %d", chan, skb, skb->len);
BT_DBG("chan %p, skb %p len %d priority %u", chan, skb, skb->len,
skb->priority);
if (!test_bit(FLAG_FLUSHABLE, &chan->flags) &&
lmp_no_flush_capable(hcon->hdev))
@ -1483,6 +1485,8 @@ static inline int l2cap_skbuff_fromiovec(struct sock *sk, struct msghdr *msg, in
if (memcpy_fromiovec(skb_put(*frag, count), msg->msg_iov, count))
return -EFAULT;
(*frag)->priority = skb->priority;
sent += count;
len -= count;
@ -1492,7 +1496,9 @@ static inline int l2cap_skbuff_fromiovec(struct sock *sk, struct msghdr *msg, in
return sent;
}
static struct sk_buff *l2cap_create_connless_pdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len)
static struct sk_buff *l2cap_create_connless_pdu(struct l2cap_chan *chan,
struct msghdr *msg, size_t len,
u32 priority)
{
struct sock *sk = chan->sk;
struct l2cap_conn *conn = chan->conn;
@ -1500,7 +1506,7 @@ static struct sk_buff *l2cap_create_connless_pdu(struct l2cap_chan *chan, struct
int err, count, hlen = L2CAP_HDR_SIZE + L2CAP_PSMLEN_SIZE;
struct l2cap_hdr *lh;
BT_DBG("sk %p len %d", sk, (int)len);
BT_DBG("sk %p len %d priority %u", sk, (int)len, priority);
count = min_t(unsigned int, (conn->mtu - hlen), len);
skb = bt_skb_send_alloc(sk, count + hlen,
@ -1508,6 +1514,8 @@ static struct sk_buff *l2cap_create_connless_pdu(struct l2cap_chan *chan, struct
if (!skb)
return ERR_PTR(err);
skb->priority = priority;
/* Create L2CAP header */
lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
lh->cid = cpu_to_le16(chan->dcid);
@ -1522,7 +1530,9 @@ static struct sk_buff *l2cap_create_connless_pdu(struct l2cap_chan *chan, struct
return skb;
}
static struct sk_buff *l2cap_create_basic_pdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len)
static struct sk_buff *l2cap_create_basic_pdu(struct l2cap_chan *chan,
struct msghdr *msg, size_t len,
u32 priority)
{
struct sock *sk = chan->sk;
struct l2cap_conn *conn = chan->conn;
@ -1538,6 +1548,8 @@ static struct sk_buff *l2cap_create_basic_pdu(struct l2cap_chan *chan, struct ms
if (!skb)
return ERR_PTR(err);
skb->priority = priority;
/* Create L2CAP header */
lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
lh->cid = cpu_to_le16(chan->dcid);
@ -1651,7 +1663,8 @@ static int l2cap_sar_segment_sdu(struct l2cap_chan *chan, struct msghdr *msg, si
return size;
}
int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len)
int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len,
u32 priority)
{
struct sk_buff *skb;
u32 control;
@ -1659,7 +1672,7 @@ int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len)
/* Connectionless channel */
if (chan->chan_type == L2CAP_CHAN_CONN_LESS) {
skb = l2cap_create_connless_pdu(chan, msg, len);
skb = l2cap_create_connless_pdu(chan, msg, len, priority);
if (IS_ERR(skb))
return PTR_ERR(skb);
@ -1674,7 +1687,7 @@ int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len)
return -EMSGSIZE;
/* Create a basic PDU */
skb = l2cap_create_basic_pdu(chan, msg, len);
skb = l2cap_create_basic_pdu(chan, msg, len, priority);
if (IS_ERR(skb))
return PTR_ERR(skb);

2
net/bluetooth/l2cap_sock.c
View File

@ -721,7 +721,7 @@ static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct ms
return -ENOTCONN;
}
err = l2cap_chan_send(chan, msg, len);
err = l2cap_chan_send(chan, msg, len, sk->sk_priority);
release_sock(sk);
return err;