[RFC] Bluetooth: Add alloc_skb chan operator
From: Emeltchenko Andrei <hidden>
Date: 2012-01-19 13:13:52
Subsystem:
bluetooth subsystem, the rest · Maintainers:
Marcel Holtmann, Luiz Augusto von Dentz, Linus Torvalds
From: Andrei Emeltchenko <redacted> Add channel-specific skb allocation method Signed-off-by: Andrei Emeltchenko <redacted> --- include/net/bluetooth/l2cap.h | 3 +++ net/bluetooth/l2cap_core.c | 22 +++++++++++++++------- net/bluetooth/l2cap_sock.c | 9 +++++++++ 3 files changed, 27 insertions(+), 7 deletions(-)
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index 34a882b..ed390ad 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h@@ -506,6 +506,9 @@ struct l2cap_ops { int (*recv) (void *data, struct sk_buff *skb); void (*close) (void *data); void (*state_change) (void *data, int state); + struct sk_buff *(*alloc_skb) (struct l2cap_chan *chan, + unsigned long len, int nb, int *err); + }; struct l2cap_conn {
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 598805b..f9bd130 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c@@ -1531,7 +1531,9 @@ static inline int l2cap_skbuff_fromiovec(struct l2cap_chan *chan, struct msghdr while (len) { count = min_t(unsigned int, conn->mtu, len); - *frag = bt_skb_send_alloc(sk, count, msg->msg_flags & MSG_DONTWAIT, &err); + *frag = chan->ops->alloc_skb(chan, count, + msg->msg_flags & MSG_DONTWAIT, &err); + if (!*frag) return err; if (memcpy_fromiovec(skb_put(*frag, count), msg->msg_iov, count))
@@ -1561,8 +1563,10 @@ static struct sk_buff *l2cap_create_connless_pdu(struct l2cap_chan *chan, 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, - msg->msg_flags & MSG_DONTWAIT, &err); + + skb = chan->ops->alloc_skb(chan, count + hlen, + msg->msg_flags & MSG_DONTWAIT, &err); + if (!skb) return ERR_PTR(err);
@@ -1595,8 +1599,10 @@ static struct sk_buff *l2cap_create_basic_pdu(struct l2cap_chan *chan, BT_DBG("sk %p len %d", sk, (int)len); count = min_t(unsigned int, (conn->mtu - hlen), len); - skb = bt_skb_send_alloc(sk, count + hlen, - msg->msg_flags & MSG_DONTWAIT, &err); + + skb = chan->ops->alloc_skb(chan, count + hlen, + msg->msg_flags & MSG_DONTWAIT, &err); + if (!skb) return ERR_PTR(err);
@@ -1642,8 +1648,10 @@ static struct sk_buff *l2cap_create_iframe_pdu(struct l2cap_chan *chan, hlen += L2CAP_FCS_SIZE; count = min_t(unsigned int, (conn->mtu - hlen), len); - skb = bt_skb_send_alloc(sk, count + hlen, - msg->msg_flags & MSG_DONTWAIT, &err); + + skb = chan->ops->alloc_skb(chan, count + hlen, + msg->msg_flags & MSG_DONTWAIT, &err); + if (!skb) return ERR_PTR(err);
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index c57027f..4640c12 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c@@ -897,12 +897,21 @@ static void l2cap_sock_state_change_cb(void *data, int state) sk->sk_state = state; } +static struct sk_buff *l2cap_sock_alloc_skb_cb(struct l2cap_chan *chan, + unsigned long len, int nb, int *err) +{ + struct sock *sk = chan->sk; + + return bt_skb_send_alloc(sk, len, nb, err); +} + static struct l2cap_ops l2cap_chan_ops = { .name = "L2CAP Socket Interface", .new_connection = l2cap_sock_new_connection_cb, .recv = l2cap_sock_recv_cb, .close = l2cap_sock_close_cb, .state_change = l2cap_sock_state_change_cb, + .alloc_skb = l2cap_sock_alloc_skb_cb, }; static void l2cap_sock_destruct(struct sock *sk)
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1.7.4.1