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path: root/net/bluetooth/l2cap_core.c
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Diffstat (limited to 'net/bluetooth/l2cap_core.c')
-rw-r--r--net/bluetooth/l2cap_core.c97
1 files changed, 48 insertions, 49 deletions
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index cb3c4ed47ae..7b06375d05a 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -176,24 +176,24 @@ static void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan)
if (sk->sk_type == SOCK_SEQPACKET || sk->sk_type == SOCK_STREAM) {
if (conn->hcon->type == LE_LINK) {
/* LE connection */
- l2cap_pi(sk)->omtu = L2CAP_LE_DEFAULT_MTU;
+ chan->omtu = L2CAP_LE_DEFAULT_MTU;
l2cap_pi(sk)->scid = L2CAP_CID_LE_DATA;
l2cap_pi(sk)->dcid = L2CAP_CID_LE_DATA;
} else {
/* Alloc CID for connection-oriented socket */
l2cap_pi(sk)->scid = l2cap_alloc_cid(conn);
- l2cap_pi(sk)->omtu = L2CAP_DEFAULT_MTU;
+ chan->omtu = L2CAP_DEFAULT_MTU;
}
} else if (sk->sk_type == SOCK_DGRAM) {
/* Connectionless socket */
l2cap_pi(sk)->scid = L2CAP_CID_CONN_LESS;
l2cap_pi(sk)->dcid = L2CAP_CID_CONN_LESS;
- l2cap_pi(sk)->omtu = L2CAP_DEFAULT_MTU;
+ chan->omtu = L2CAP_DEFAULT_MTU;
} else {
/* Raw socket can send/recv signalling messages only */
l2cap_pi(sk)->scid = L2CAP_CID_SIGNALING;
l2cap_pi(sk)->dcid = L2CAP_CID_SIGNALING;
- l2cap_pi(sk)->omtu = L2CAP_DEFAULT_MTU;
+ chan->omtu = L2CAP_DEFAULT_MTU;
}
sock_hold(sk);
@@ -242,7 +242,7 @@ void l2cap_chan_del(struct l2cap_chan *chan, int err)
skb_queue_purge(&chan->tx_q);
- if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) {
+ if (chan->mode == L2CAP_MODE_ERTM) {
struct srej_list *l, *tmp;
del_timer(&chan->retrans_timer);
@@ -479,7 +479,7 @@ void l2cap_send_disconn_req(struct l2cap_conn *conn, struct l2cap_chan *chan, in
sk = chan->sk;
- if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) {
+ if (chan->mode == L2CAP_MODE_ERTM) {
del_timer(&chan->retrans_timer);
del_timer(&chan->monitor_timer);
del_timer(&chan->ack_timer);
@@ -523,7 +523,7 @@ static void l2cap_conn_start(struct l2cap_conn *conn)
continue;
}
- if (!l2cap_mode_supported(l2cap_pi(sk)->mode,
+ if (!l2cap_mode_supported(chan->mode,
conn->feat_mask)
&& chan->conf_state &
L2CAP_CONF_STATE2_DEVICE) {
@@ -1609,7 +1609,7 @@ static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data)
{
struct l2cap_pinfo *pi = l2cap_pi(chan->sk);
struct l2cap_conf_req *req = data;
- struct l2cap_conf_rfc rfc = { .mode = pi->mode };
+ struct l2cap_conf_rfc rfc = { .mode = chan->mode };
void *ptr = req->data;
BT_DBG("chan %p", chan);
@@ -1617,7 +1617,7 @@ static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data)
if (chan->num_conf_req || chan->num_conf_rsp)
goto done;
- switch (pi->mode) {
+ switch (chan->mode) {
case L2CAP_MODE_STREAMING:
case L2CAP_MODE_ERTM:
if (chan->conf_state & L2CAP_CONF_STATE2_DEVICE)
@@ -1625,15 +1625,15 @@ static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data)
/* fall through */
default:
- pi->mode = l2cap_select_mode(rfc.mode, pi->conn->feat_mask);
+ chan->mode = l2cap_select_mode(rfc.mode, pi->conn->feat_mask);
break;
}
done:
- if (pi->imtu != L2CAP_DEFAULT_MTU)
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, pi->imtu);
+ if (chan->imtu != L2CAP_DEFAULT_MTU)
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->imtu);
- switch (pi->mode) {
+ switch (chan->mode) {
case L2CAP_MODE_BASIC:
if (!(pi->conn->feat_mask & L2CAP_FEAT_ERTM) &&
!(pi->conn->feat_mask & L2CAP_FEAT_STREAMING))
@@ -1730,7 +1730,7 @@ static int l2cap_parse_conf_req(struct l2cap_chan *chan, void *data)
break;
case L2CAP_CONF_FLUSH_TO:
- pi->flush_to = val;
+ chan->flush_to = val;
break;
case L2CAP_CONF_QOS:
@@ -1760,25 +1760,25 @@ static int l2cap_parse_conf_req(struct l2cap_chan *chan, void *data)
if (chan->num_conf_rsp || chan->num_conf_req > 1)
goto done;
- switch (pi->mode) {
+ switch (chan->mode) {
case L2CAP_MODE_STREAMING:
case L2CAP_MODE_ERTM:
if (!(chan->conf_state & L2CAP_CONF_STATE2_DEVICE)) {
- pi->mode = l2cap_select_mode(rfc.mode,
+ chan->mode = l2cap_select_mode(rfc.mode,
pi->conn->feat_mask);
break;
}
- if (pi->mode != rfc.mode)
+ if (chan->mode != rfc.mode)
return -ECONNREFUSED;
break;
}
done:
- if (pi->mode != rfc.mode) {
+ if (chan->mode != rfc.mode) {
result = L2CAP_CONF_UNACCEPT;
- rfc.mode = pi->mode;
+ rfc.mode = chan->mode;
if (chan->num_conf_rsp == 1)
return -ECONNREFUSED;
@@ -1795,10 +1795,10 @@ done:
if (mtu < L2CAP_DEFAULT_MIN_MTU)
result = L2CAP_CONF_UNACCEPT;
else {
- pi->omtu = mtu;
+ chan->omtu = mtu;
chan->conf_state |= L2CAP_CONF_MTU_DONE;
}
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, pi->omtu);
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->omtu);
switch (rfc.mode) {
case L2CAP_MODE_BASIC:
@@ -1844,7 +1844,7 @@ done:
result = L2CAP_CONF_UNACCEPT;
memset(&rfc, 0, sizeof(rfc));
- rfc.mode = pi->mode;
+ rfc.mode = chan->mode;
}
if (result == L2CAP_CONF_SUCCESS)
@@ -1876,16 +1876,16 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len, voi
case L2CAP_CONF_MTU:
if (val < L2CAP_DEFAULT_MIN_MTU) {
*result = L2CAP_CONF_UNACCEPT;
- pi->imtu = L2CAP_DEFAULT_MIN_MTU;
+ chan->imtu = L2CAP_DEFAULT_MIN_MTU;
} else
- pi->imtu = val;
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, pi->imtu);
+ chan->imtu = val;
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->imtu);
break;
case L2CAP_CONF_FLUSH_TO:
- pi->flush_to = val;
+ chan->flush_to = val;
l2cap_add_conf_opt(&ptr, L2CAP_CONF_FLUSH_TO,
- 2, pi->flush_to);
+ 2, chan->flush_to);
break;
case L2CAP_CONF_RFC:
@@ -1893,7 +1893,7 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len, voi
memcpy(&rfc, (void *)val, olen);
if ((chan->conf_state & L2CAP_CONF_STATE2_DEVICE) &&
- rfc.mode != pi->mode)
+ rfc.mode != chan->mode)
return -ECONNREFUSED;
chan->fcs = 0;
@@ -1904,10 +1904,10 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len, voi
}
}
- if (pi->mode == L2CAP_MODE_BASIC && pi->mode != rfc.mode)
+ if (chan->mode == L2CAP_MODE_BASIC && chan->mode != rfc.mode)
return -ECONNREFUSED;
- pi->mode = rfc.mode;
+ chan->mode = rfc.mode;
if (*result == L2CAP_CONF_SUCCESS) {
switch (rfc.mode) {
@@ -1968,14 +1968,13 @@ void __l2cap_connect_rsp_defer(struct sock *sk)
static void l2cap_conf_rfc_get(struct l2cap_chan *chan, void *rsp, int len)
{
- struct l2cap_pinfo *pi = l2cap_pi(chan->sk);
int type, olen;
unsigned long val;
struct l2cap_conf_rfc rfc;
BT_DBG("chan %p, rsp %p, len %d", chan, rsp, len);
- if ((pi->mode != L2CAP_MODE_ERTM) && (pi->mode != L2CAP_MODE_STREAMING))
+ if ((chan->mode != L2CAP_MODE_ERTM) && (chan->mode != L2CAP_MODE_STREAMING))
return;
while (len >= L2CAP_CONF_OPT_SIZE) {
@@ -2232,7 +2231,7 @@ static inline void set_default_fcs(struct l2cap_chan *chan)
/* FCS is enabled only in ERTM or streaming mode, if one or both
* sides request it.
*/
- if (pi->mode != L2CAP_MODE_ERTM && pi->mode != L2CAP_MODE_STREAMING)
+ if (chan->mode != L2CAP_MODE_ERTM && chan->mode != L2CAP_MODE_STREAMING)
chan->fcs = L2CAP_FCS_NONE;
else if (!(pi->chan->conf_state & L2CAP_CONF_NO_FCS_RECV))
chan->fcs = L2CAP_FCS_CRC16;
@@ -2312,7 +2311,7 @@ static inline int l2cap_config_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr
chan->next_tx_seq = 0;
chan->expected_tx_seq = 0;
skb_queue_head_init(&chan->tx_q);
- if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM)
+ if (chan->mode == L2CAP_MODE_ERTM)
l2cap_ertm_init(chan);
l2cap_chan_ready(sk);
@@ -2403,7 +2402,7 @@ static inline int l2cap_config_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr
chan->next_tx_seq = 0;
chan->expected_tx_seq = 0;
skb_queue_head_init(&chan->tx_q);
- if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM)
+ if (chan->mode == L2CAP_MODE_ERTM)
l2cap_ertm_init(chan);
l2cap_chan_ready(sk);
@@ -2876,7 +2875,7 @@ static int l2cap_ertm_reassembly_sdu(struct l2cap_chan *chan, struct sk_buff *sk
chan->sdu_len = get_unaligned_le16(skb->data);
- if (chan->sdu_len > pi->imtu)
+ if (chan->sdu_len > chan->imtu)
goto disconnect;
chan->sdu = bt_skb_alloc(chan->sdu_len, GFP_ATOMIC);
@@ -2919,7 +2918,7 @@ static int l2cap_ertm_reassembly_sdu(struct l2cap_chan *chan, struct sk_buff *sk
if (!(chan->conn_state & L2CAP_CONN_SAR_RETRY)) {
chan->partial_sdu_len += skb->len;
- if (chan->partial_sdu_len > pi->imtu)
+ if (chan->partial_sdu_len > chan->imtu)
goto drop;
if (chan->partial_sdu_len != chan->sdu_len)
@@ -3087,7 +3086,6 @@ static int l2cap_push_rx_skb(struct l2cap_chan *chan, struct sk_buff *skb, u16 c
static int l2cap_streaming_reassembly_sdu(struct l2cap_chan *chan, struct sk_buff *skb, u16 control)
{
- struct l2cap_pinfo *pi = l2cap_pi(chan->sk);
struct sk_buff *_skb;
int err = -EINVAL;
@@ -3118,7 +3116,7 @@ static int l2cap_streaming_reassembly_sdu(struct l2cap_chan *chan, struct sk_buf
chan->sdu_len = get_unaligned_le16(skb->data);
skb_pull(skb, 2);
- if (chan->sdu_len > pi->imtu) {
+ if (chan->sdu_len > chan->imtu) {
err = -EMSGSIZE;
break;
}
@@ -3159,7 +3157,7 @@ static int l2cap_streaming_reassembly_sdu(struct l2cap_chan *chan, struct sk_buf
chan->conn_state &= ~L2CAP_CONN_SAR_SDU;
chan->partial_sdu_len += skb->len;
- if (chan->partial_sdu_len > pi->imtu)
+ if (chan->partial_sdu_len > chan->imtu)
goto drop;
if (chan->partial_sdu_len == chan->sdu_len) {
@@ -3625,14 +3623,14 @@ static inline int l2cap_data_channel(struct l2cap_conn *conn, u16 cid, struct sk
if (sk->sk_state != BT_CONNECTED)
goto drop;
- switch (pi->mode) {
+ switch (chan->mode) {
case L2CAP_MODE_BASIC:
/* If socket recv buffers overflows we drop data here
* which is *bad* because L2CAP has to be reliable.
* But we don't have any other choice. L2CAP doesn't
* provide flow control mechanism. */
- if (pi->imtu < skb->len)
+ if (chan->imtu < skb->len)
goto drop;
if (!sock_queue_rcv_skb(sk, skb))
@@ -3678,7 +3676,7 @@ static inline int l2cap_data_channel(struct l2cap_conn *conn, u16 cid, struct sk
goto done;
default:
- BT_DBG("chan %p: bad mode 0x%2.2x", chan, pi->mode);
+ BT_DBG("chan %p: bad mode 0x%2.2x", chan, chan->mode);
break;
}
@@ -3707,7 +3705,7 @@ static inline int l2cap_conless_channel(struct l2cap_conn *conn, __le16 psm, str
if (sk->sk_state != BT_BOUND && sk->sk_state != BT_CONNECTED)
goto drop;
- if (l2cap_pi(sk)->imtu < skb->len)
+ if (l2cap_pi(sk)->chan->imtu < skb->len)
goto drop;
if (!sock_queue_rcv_skb(sk, skb))
@@ -3737,7 +3735,7 @@ static inline int l2cap_att_channel(struct l2cap_conn *conn, __le16 cid, struct
if (sk->sk_state != BT_BOUND && sk->sk_state != BT_CONNECTED)
goto drop;
- if (l2cap_pi(sk)->imtu < skb->len)
+ if (l2cap_pi(sk)->chan->imtu < skb->len)
goto drop;
if (!sock_queue_rcv_skb(sk, skb))
@@ -4020,10 +4018,10 @@ static int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 fl
if (chan && chan->sk) {
struct sock *sk = chan->sk;
- if (l2cap_pi(sk)->imtu < len - L2CAP_HDR_SIZE) {
+ if (chan->imtu < len - L2CAP_HDR_SIZE) {
BT_ERR("Frame exceeding recv MTU (len %d, "
"MTU %d)", len,
- l2cap_pi(sk)->imtu);
+ chan->imtu);
bh_unlock_sock(sk);
l2cap_conn_unreliable(conn, ECOMM);
goto drop;
@@ -4083,14 +4081,15 @@ static int l2cap_debugfs_show(struct seq_file *f, void *p)
sk_for_each(sk, node, &l2cap_sk_list.head) {
struct l2cap_pinfo *pi = l2cap_pi(sk);
+ struct l2cap_chan *chan = pi->chan;
seq_printf(f, "%s %s %d %d 0x%4.4x 0x%4.4x %d %d %d %d\n",
batostr(&bt_sk(sk)->src),
batostr(&bt_sk(sk)->dst),
sk->sk_state, __le16_to_cpu(pi->psm),
pi->scid, pi->dcid,
- pi->imtu, pi->omtu, pi->chan->sec_level,
- pi->mode);
+ chan->imtu, chan->omtu, chan->sec_level,
+ chan->mode);
}
read_unlock_bh(&l2cap_sk_list.lock);
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-03-03 20:20:33 +0000