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Diffstat (limited to 'net/bluetooth/6lowpan.c')
-rw-r--r--net/bluetooth/6lowpan.c162
1 files changed, 55 insertions, 107 deletions
diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c
index 131e79cde350..9e9cca3689a0 100644
--- a/net/bluetooth/6lowpan.c
+++ b/net/bluetooth/6lowpan.c
@@ -21,8 +21,6 @@
#include <net/ip6_route.h>
#include <net/addrconf.h>
-#include <net/af_ieee802154.h> /* to get the address type */
-
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include <net/bluetooth/l2cap.h>
@@ -35,7 +33,6 @@ static struct dentry *lowpan_enable_debugfs;
static struct dentry *lowpan_control_debugfs;
#define IFACE_NAME_TEMPLATE "bt%d"
-#define EUI64_ADDR_LEN 8
struct skb_cb {
struct in6_addr addr;
@@ -266,14 +263,13 @@ static int give_skb_to_upper(struct sk_buff *skb, struct net_device *dev)
if (!skb_cp)
return NET_RX_DROP;
- return netif_rx(skb_cp);
+ return netif_rx_ni(skb_cp);
}
static int iphc_decompress(struct sk_buff *skb, struct net_device *netdev,
struct l2cap_chan *chan)
{
const u8 *saddr, *daddr;
- u8 iphc0, iphc1;
struct lowpan_dev *dev;
struct lowpan_peer *peer;
@@ -288,22 +284,7 @@ static int iphc_decompress(struct sk_buff *skb, struct net_device *netdev,
saddr = peer->eui64_addr;
daddr = dev->netdev->dev_addr;
- /* at least two bytes will be used for the encoding */
- if (skb->len < 2)
- return -EINVAL;
-
- if (lowpan_fetch_skb_u8(skb, &iphc0))
- return -EINVAL;
-
- if (lowpan_fetch_skb_u8(skb, &iphc1))
- return -EINVAL;
-
- return lowpan_header_decompress(skb, netdev,
- saddr, IEEE802154_ADDR_LONG,
- EUI64_ADDR_LEN, daddr,
- IEEE802154_ADDR_LONG, EUI64_ADDR_LEN,
- iphc0, iphc1);
-
+ return lowpan_header_decompress(skb, netdev, daddr, saddr);
}
static int recv_pkt(struct sk_buff *skb, struct net_device *dev,
@@ -315,15 +296,17 @@ static int recv_pkt(struct sk_buff *skb, struct net_device *dev,
if (!netif_running(dev))
goto drop;
- if (dev->type != ARPHRD_6LOWPAN)
+ if (dev->type != ARPHRD_6LOWPAN || !skb->len)
goto drop;
+ skb_reset_network_header(skb);
+
skb = skb_share_check(skb, GFP_ATOMIC);
if (!skb)
goto drop;
/* check that it's our buffer */
- if (skb->data[0] == LOWPAN_DISPATCH_IPV6) {
+ if (lowpan_is_ipv6(*skb_network_header(skb))) {
/* Copy the packet so that the IPv6 header is
* properly aligned.
*/
@@ -335,7 +318,6 @@ static int recv_pkt(struct sk_buff *skb, struct net_device *dev,
local_skb->protocol = htons(ETH_P_IPV6);
local_skb->pkt_type = PACKET_HOST;
- skb_reset_network_header(local_skb);
skb_set_transport_header(local_skb, sizeof(struct ipv6hdr));
if (give_skb_to_upper(local_skb, dev) != NET_RX_SUCCESS) {
@@ -348,38 +330,34 @@ static int recv_pkt(struct sk_buff *skb, struct net_device *dev,
consume_skb(local_skb);
consume_skb(skb);
- } else {
- switch (skb->data[0] & 0xe0) {
- case LOWPAN_DISPATCH_IPHC: /* ipv6 datagram */
- local_skb = skb_clone(skb, GFP_ATOMIC);
- if (!local_skb)
- goto drop;
+ } else if (lowpan_is_iphc(*skb_network_header(skb))) {
+ local_skb = skb_clone(skb, GFP_ATOMIC);
+ if (!local_skb)
+ goto drop;
- ret = iphc_decompress(local_skb, dev, chan);
- if (ret < 0) {
- kfree_skb(local_skb);
- goto drop;
- }
+ ret = iphc_decompress(local_skb, dev, chan);
+ if (ret < 0) {
+ kfree_skb(local_skb);
+ goto drop;
+ }
- local_skb->protocol = htons(ETH_P_IPV6);
- local_skb->pkt_type = PACKET_HOST;
- local_skb->dev = dev;
+ local_skb->protocol = htons(ETH_P_IPV6);
+ local_skb->pkt_type = PACKET_HOST;
+ local_skb->dev = dev;
- if (give_skb_to_upper(local_skb, dev)
- != NET_RX_SUCCESS) {
- kfree_skb(local_skb);
- goto drop;
- }
+ if (give_skb_to_upper(local_skb, dev)
+ != NET_RX_SUCCESS) {
+ kfree_skb(local_skb);
+ goto drop;
+ }
- dev->stats.rx_bytes += skb->len;
- dev->stats.rx_packets++;
+ dev->stats.rx_bytes += skb->len;
+ dev->stats.rx_packets++;
- consume_skb(local_skb);
- consume_skb(skb);
- break;
- default:
- break;
- }
+ consume_skb(local_skb);
+ consume_skb(skb);
+ } else {
+ goto drop;
}
return NET_RX_SUCCESS;
@@ -493,8 +471,7 @@ static int setup_header(struct sk_buff *skb, struct net_device *netdev,
status = 1;
}
- lowpan_header_compress(skb, netdev, ETH_P_IPV6, daddr,
- dev->netdev->dev_addr, skb->len);
+ lowpan_header_compress(skb, netdev, daddr, dev->netdev->dev_addr);
err = dev_hard_header(skb, netdev, ETH_P_IPV6, NULL, NULL, 0);
if (err < 0)
@@ -674,13 +651,8 @@ static struct header_ops header_ops = {
static void netdev_setup(struct net_device *dev)
{
- dev->addr_len = EUI64_ADDR_LEN;
- dev->type = ARPHRD_6LOWPAN;
-
dev->hard_header_len = 0;
dev->needed_tailroom = 0;
- dev->mtu = IPV6_MIN_MTU;
- dev->tx_queue_len = 0;
dev->flags = IFF_RUNNING | IFF_POINTOPOINT |
IFF_MULTICAST;
dev->watchdog_timeo = 0;
@@ -775,24 +747,7 @@ static struct l2cap_chan *chan_create(void)
chan->chan_type = L2CAP_CHAN_CONN_ORIENTED;
chan->mode = L2CAP_MODE_LE_FLOWCTL;
- chan->omtu = 65535;
- chan->imtu = chan->omtu;
-
- return chan;
-}
-
-static struct l2cap_chan *chan_open(struct l2cap_chan *pchan)
-{
- struct l2cap_chan *chan;
-
- chan = chan_create();
- if (!chan)
- return NULL;
-
- chan->remote_mps = chan->omtu;
- chan->mps = chan->omtu;
-
- chan->state = BT_CONNECTED;
+ chan->imtu = 1280;
return chan;
}
@@ -919,7 +874,10 @@ static inline struct l2cap_chan *chan_new_conn_cb(struct l2cap_chan *pchan)
{
struct l2cap_chan *chan;
- chan = chan_open(pchan);
+ chan = chan_create();
+ if (!chan)
+ return NULL;
+
chan->ops = pchan->ops;
BT_DBG("chan %p pchan %p", chan, pchan);
@@ -1065,34 +1023,23 @@ static inline __u8 bdaddr_type(__u8 type)
return BDADDR_LE_RANDOM;
}
-static struct l2cap_chan *chan_get(void)
-{
- struct l2cap_chan *pchan;
-
- pchan = chan_create();
- if (!pchan)
- return NULL;
-
- pchan->ops = &bt_6lowpan_chan_ops;
-
- return pchan;
-}
-
static int bt_6lowpan_connect(bdaddr_t *addr, u8 dst_type)
{
- struct l2cap_chan *pchan;
+ struct l2cap_chan *chan;
int err;
- pchan = chan_get();
- if (!pchan)
+ chan = chan_create();
+ if (!chan)
return -EINVAL;
- err = l2cap_chan_connect(pchan, cpu_to_le16(L2CAP_PSM_IPSP), 0,
+ chan->ops = &bt_6lowpan_chan_ops;
+
+ err = l2cap_chan_connect(chan, cpu_to_le16(L2CAP_PSM_IPSP), 0,
addr, dst_type);
- BT_DBG("chan %p err %d", pchan, err);
+ BT_DBG("chan %p err %d", chan, err);
if (err < 0)
- l2cap_chan_put(pchan);
+ l2cap_chan_put(chan);
return err;
}
@@ -1117,31 +1064,32 @@ static int bt_6lowpan_disconnect(struct l2cap_conn *conn, u8 dst_type)
static struct l2cap_chan *bt_6lowpan_listen(void)
{
bdaddr_t *addr = BDADDR_ANY;
- struct l2cap_chan *pchan;
+ struct l2cap_chan *chan;
int err;
if (!enable_6lowpan)
return NULL;
- pchan = chan_get();
- if (!pchan)
+ chan = chan_create();
+ if (!chan)
return NULL;
- pchan->state = BT_LISTEN;
- pchan->src_type = BDADDR_LE_PUBLIC;
+ chan->ops = &bt_6lowpan_chan_ops;
+ chan->state = BT_LISTEN;
+ chan->src_type = BDADDR_LE_PUBLIC;
- atomic_set(&pchan->nesting, L2CAP_NESTING_PARENT);
+ atomic_set(&chan->nesting, L2CAP_NESTING_PARENT);
- BT_DBG("chan %p src type %d", pchan, pchan->src_type);
+ BT_DBG("chan %p src type %d", chan, chan->src_type);
- err = l2cap_add_psm(pchan, addr, cpu_to_le16(L2CAP_PSM_IPSP));
+ err = l2cap_add_psm(chan, addr, cpu_to_le16(L2CAP_PSM_IPSP));
if (err) {
- l2cap_chan_put(pchan);
+ l2cap_chan_put(chan);
BT_ERR("psm cannot be added err %d", err);
return NULL;
}
- return pchan;
+ return chan;
}
static int get_l2cap_conn(char *buf, bdaddr_t *addr, u8 *addr_type,
@@ -1165,7 +1113,7 @@ static int get_l2cap_conn(char *buf, bdaddr_t *addr, u8 *addr_type,
return -ENOENT;
hci_dev_lock(hdev);
- hcon = hci_conn_hash_lookup_ba(hdev, LE_LINK, addr);
+ hcon = hci_conn_hash_lookup_le(hdev, addr, *addr_type);
hci_dev_unlock(hdev);
if (!hcon)
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-25 09:49:59 +0300