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Bluetooth: Add LE SC support for responding to Pairing Confirm PDU

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When LE SC is being used we should always respond to it by sending our
local random number. This patch adds a convenience function for it which
also contains a check for the pre-requisite public key exchange
completion

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg 2014-06-06 11:36:38 +03:00 committed by Marcel Holtmann
parent cbbbe3e242
commit dcee2b3221
1 changed files with 22 additions and 0 deletions
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22
net/bluetooth/smp.c
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@ -1216,6 +1216,25 @@ static u8 smp_cmd_pairing_rsp(struct l2cap_conn *conn, struct sk_buff *skb)
return 0; return 0;
} }
static u8 sc_check_confirm(struct smp_chan *smp)
{
struct l2cap_conn *conn = smp->conn;
BT_DBG("");
/* Public Key exchange must happen before any other steps */
if (!test_bit(SMP_FLAG_REMOTE_PK, &smp->flags))
return SMP_UNSPECIFIED;
if (conn->hcon->out) {
smp_send_cmd(conn, SMP_CMD_PAIRING_RANDOM, sizeof(smp->prnd),
smp->prnd);
SMP_ALLOW_CMD(smp, SMP_CMD_PAIRING_RANDOM);
}
return 0;
}
static u8 smp_cmd_pairing_confirm(struct l2cap_conn *conn, struct sk_buff *skb) static u8 smp_cmd_pairing_confirm(struct l2cap_conn *conn, struct sk_buff *skb)
{ {
struct l2cap_chan *chan = conn->smp; struct l2cap_chan *chan = conn->smp;
@ -1229,6 +1248,9 @@ static u8 smp_cmd_pairing_confirm(struct l2cap_conn *conn, struct sk_buff *skb)
memcpy(smp->pcnf, skb->data, sizeof(smp->pcnf)); memcpy(smp->pcnf, skb->data, sizeof(smp->pcnf));
skb_pull(skb, sizeof(smp->pcnf)); skb_pull(skb, sizeof(smp->pcnf));
if (test_bit(SMP_FLAG_SC, &smp->flags))
return sc_check_confirm(smp);
if (conn->hcon->out) { if (conn->hcon->out) {
smp_send_cmd(conn, SMP_CMD_PAIRING_RANDOM, sizeof(smp->prnd), smp_send_cmd(conn, SMP_CMD_PAIRING_RANDOM, sizeof(smp->prnd),
smp->prnd); smp->prnd);