forked from luck/tmp_suning_uos_patched
[Bluetooth]: Implement RFCOMM remote port negotiation
This patch implements the remote port negotiation (RPN) of the RFCOMM protocol for Bluetooth. Signed-off-by: J. Suter <jsuter@hardwave.de> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
J. Suter
David S. Miller
parent
7b9eb9e209
commit
3a5e903c09
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@ -80,9 +80,9 @@
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#define RFCOMM_RPN_STOP_15 1
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#define RFCOMM_RPN_PARITY_NONE 0x0
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#define RFCOMM_RPN_PARITY_ODD 0x4
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#define RFCOMM_RPN_PARITY_EVEN 0x5
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#define RFCOMM_RPN_PARITY_MARK 0x6
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#define RFCOMM_RPN_PARITY_ODD 0x1
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#define RFCOMM_RPN_PARITY_EVEN 0x3
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#define RFCOMM_RPN_PARITY_MARK 0x5
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#define RFCOMM_RPN_PARITY_SPACE 0x7
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#define RFCOMM_RPN_FLOW_NONE 0x00
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@ -223,6 +223,12 @@ struct rfcomm_dlc {
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#define RFCOMM_CFC_DISABLED 0
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#define RFCOMM_CFC_ENABLED RFCOMM_MAX_CREDITS
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/* ---- RFCOMM SEND RPN ---- */
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int rfcomm_send_rpn(struct rfcomm_session *s, int cr, u8 dlci,
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u8 bit_rate, u8 data_bits, u8 stop_bits,
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u8 parity, u8 flow_ctrl_settings,
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u8 xon_char, u8 xoff_char, u16 param_mask);
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/* ---- RFCOMM DLCs (channels) ---- */
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struct rfcomm_dlc *rfcomm_dlc_alloc(int prio);
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void rfcomm_dlc_free(struct rfcomm_dlc *d);
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@ -21,10 +21,6 @@
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SOFTWARE IS DISCLAIMED.
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*/
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/*
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RPN support - Dirk Husemann <hud@zurich.ibm.com>
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*/
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/*
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* Bluetooth RFCOMM core.
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*
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@ -115,10 +111,10 @@ static void rfcomm_session_del(struct rfcomm_session *s);
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#define __get_mcc_len(b) ((b & 0xfe) >> 1)
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/* RPN macros */
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#define __rpn_line_settings(data, stop, parity) ((data & 0x3) | ((stop & 0x1) << 2) | ((parity & 0x3) << 3))
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#define __rpn_line_settings(data, stop, parity) ((data & 0x3) | ((stop & 0x1) << 2) | ((parity & 0x7) << 3))
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#define __get_rpn_data_bits(line) ((line) & 0x3)
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#define __get_rpn_stop_bits(line) (((line) >> 2) & 0x1)
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#define __get_rpn_parity(line) (((line) >> 3) & 0x3)
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#define __get_rpn_parity(line) (((line) >> 3) & 0x7)
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static inline void rfcomm_schedule(uint event)
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{
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@ -780,10 +776,10 @@ static int rfcomm_send_pn(struct rfcomm_session *s, int cr, struct rfcomm_dlc *d
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return rfcomm_send_frame(s, buf, ptr - buf);
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}
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static int rfcomm_send_rpn(struct rfcomm_session *s, int cr, u8 dlci,
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u8 bit_rate, u8 data_bits, u8 stop_bits,
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u8 parity, u8 flow_ctrl_settings,
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u8 xon_char, u8 xoff_char, u16 param_mask)
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int rfcomm_send_rpn(struct rfcomm_session *s, int cr, u8 dlci,
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u8 bit_rate, u8 data_bits, u8 stop_bits,
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u8 parity, u8 flow_ctrl_settings,
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u8 xon_char, u8 xoff_char, u16 param_mask)
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{
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struct rfcomm_hdr *hdr;
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struct rfcomm_mcc *mcc;
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@ -791,9 +787,9 @@ static int rfcomm_send_rpn(struct rfcomm_session *s, int cr, u8 dlci,
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u8 buf[16], *ptr = buf;
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BT_DBG("%p cr %d dlci %d bit_r 0x%x data_b 0x%x stop_b 0x%x parity 0x%x"
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"flwc_s 0x%x xon_c 0x%x xoff_c 0x%x p_mask 0x%x",
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s, cr, dlci, bit_rate, data_bits, stop_bits, parity,
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flow_ctrl_settings, xon_char, xoff_char, param_mask);
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" flwc_s 0x%x xon_c 0x%x xoff_c 0x%x p_mask 0x%x",
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s, cr, dlci, bit_rate, data_bits, stop_bits, parity,
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flow_ctrl_settings, xon_char, xoff_char, param_mask);
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hdr = (void *) ptr; ptr += sizeof(*hdr);
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hdr->addr = __addr(s->initiator, 0);
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@ -1265,16 +1261,16 @@ static int rfcomm_recv_rpn(struct rfcomm_session *s, int cr, int len, struct sk_
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u8 xon_char = 0;
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u8 xoff_char = 0;
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u16 rpn_mask = RFCOMM_RPN_PM_ALL;
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BT_DBG("dlci %d cr %d len 0x%x bitr 0x%x line 0x%x flow 0x%x xonc 0x%x xoffc 0x%x pm 0x%x",
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dlci, cr, len, rpn->bit_rate, rpn->line_settings, rpn->flow_ctrl,
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rpn->xon_char, rpn->xoff_char, rpn->param_mask);
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if (!cr)
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BT_DBG("dlci %d cr %d len 0x%x bitr 0x%x line 0x%x flow 0x%x xonc 0x%x xoffc 0x%x pm 0x%x",
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dlci, cr, len, rpn->bit_rate, rpn->line_settings, rpn->flow_ctrl,
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rpn->xon_char, rpn->xoff_char, rpn->param_mask);
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if (!cr)
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return 0;
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if (len == 1) {
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/* request: return default setting */
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/* This is a request, return default settings */
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bit_rate = RFCOMM_RPN_BR_115200;
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data_bits = RFCOMM_RPN_DATA_8;
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stop_bits = RFCOMM_RPN_STOP_1;
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@ -1282,11 +1278,12 @@ static int rfcomm_recv_rpn(struct rfcomm_session *s, int cr, int len, struct sk_
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flow_ctrl = RFCOMM_RPN_FLOW_NONE;
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xon_char = RFCOMM_RPN_XON_CHAR;
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xoff_char = RFCOMM_RPN_XOFF_CHAR;
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goto rpn_out;
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}
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/* check for sane values: ignore/accept bit_rate, 8 bits, 1 stop bit, no parity,
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no flow control lines, normal XON/XOFF chars */
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/* Check for sane values, ignore/accept bit_rate, 8 bits, 1 stop bit,
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* no parity, no flow control lines, normal XON/XOFF chars */
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if (rpn->param_mask & RFCOMM_RPN_PM_BITRATE) {
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bit_rate = rpn->bit_rate;
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if (bit_rate != RFCOMM_RPN_BR_115200) {
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@ -1295,6 +1292,7 @@ static int rfcomm_recv_rpn(struct rfcomm_session *s, int cr, int len, struct sk_
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rpn_mask ^= RFCOMM_RPN_PM_BITRATE;
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}
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}
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if (rpn->param_mask & RFCOMM_RPN_PM_DATA) {
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data_bits = __get_rpn_data_bits(rpn->line_settings);
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if (data_bits != RFCOMM_RPN_DATA_8) {
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@ -1303,6 +1301,7 @@ static int rfcomm_recv_rpn(struct rfcomm_session *s, int cr, int len, struct sk_
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rpn_mask ^= RFCOMM_RPN_PM_DATA;
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}
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}
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if (rpn->param_mask & RFCOMM_RPN_PM_STOP) {
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stop_bits = __get_rpn_stop_bits(rpn->line_settings);
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if (stop_bits != RFCOMM_RPN_STOP_1) {
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@ -1311,6 +1310,7 @@ static int rfcomm_recv_rpn(struct rfcomm_session *s, int cr, int len, struct sk_
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rpn_mask ^= RFCOMM_RPN_PM_STOP;
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}
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}
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if (rpn->param_mask & RFCOMM_RPN_PM_PARITY) {
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parity = __get_rpn_parity(rpn->line_settings);
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if (parity != RFCOMM_RPN_PARITY_NONE) {
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@ -1319,6 +1319,7 @@ static int rfcomm_recv_rpn(struct rfcomm_session *s, int cr, int len, struct sk_
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rpn_mask ^= RFCOMM_RPN_PM_PARITY;
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}
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}
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if (rpn->param_mask & RFCOMM_RPN_PM_FLOW) {
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flow_ctrl = rpn->flow_ctrl;
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if (flow_ctrl != RFCOMM_RPN_FLOW_NONE) {
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@ -1327,6 +1328,7 @@ static int rfcomm_recv_rpn(struct rfcomm_session *s, int cr, int len, struct sk_
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rpn_mask ^= RFCOMM_RPN_PM_FLOW;
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}
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}
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if (rpn->param_mask & RFCOMM_RPN_PM_XON) {
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xon_char = rpn->xon_char;
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if (xon_char != RFCOMM_RPN_XON_CHAR) {
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@ -1335,6 +1337,7 @@ static int rfcomm_recv_rpn(struct rfcomm_session *s, int cr, int len, struct sk_
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rpn_mask ^= RFCOMM_RPN_PM_XON;
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}
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}
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if (rpn->param_mask & RFCOMM_RPN_PM_XOFF) {
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xoff_char = rpn->xoff_char;
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if (xoff_char != RFCOMM_RPN_XOFF_CHAR) {
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@ -1345,9 +1348,8 @@ static int rfcomm_recv_rpn(struct rfcomm_session *s, int cr, int len, struct sk_
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}
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rpn_out:
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rfcomm_send_rpn(s, 0, dlci,
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bit_rate, data_bits, stop_bits, parity, flow_ctrl,
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xon_char, xoff_char, rpn_mask);
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rfcomm_send_rpn(s, 0, dlci, bit_rate, data_bits, stop_bits,
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parity, flow_ctrl, xon_char, xoff_char, rpn_mask);
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return 0;
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}
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@ -1358,14 +1360,13 @@ static int rfcomm_recv_rls(struct rfcomm_session *s, int cr, struct sk_buff *skb
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u8 dlci = __get_dlci(rls->dlci);
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BT_DBG("dlci %d cr %d status 0x%x", dlci, cr, rls->status);
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if (!cr)
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return 0;
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/* FIXME: We should probably do something with this
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information here. But for now it's sufficient just
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to reply -- Bluetooth 1.1 says it's mandatory to
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recognise and respond to RLS */
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/* We should probably do something with this information here. But
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* for now it's sufficient just to reply -- Bluetooth 1.1 says it's
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* mandatory to recognise and respond to RLS */
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rfcomm_send_rls(s, 0, dlci, rls->status);
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@ -1381,7 +1382,7 @@ static int rfcomm_recv_msc(struct rfcomm_session *s, int cr, struct sk_buff *skb
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BT_DBG("dlci %d cr %d v24 0x%x", dlci, cr, msc->v24_sig);
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d = rfcomm_dlc_get(s, dlci);
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if (!d)
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if (!d)
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return 0;
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if (cr) {
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@ -1389,7 +1390,7 @@ static int rfcomm_recv_msc(struct rfcomm_session *s, int cr, struct sk_buff *skb
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set_bit(RFCOMM_TX_THROTTLED, &d->flags);
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else
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clear_bit(RFCOMM_TX_THROTTLED, &d->flags);
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rfcomm_dlc_lock(d);
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if (d->modem_status)
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d->modem_status(d, msc->v24_sig);
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@ -1398,7 +1399,7 @@ static int rfcomm_recv_msc(struct rfcomm_session *s, int cr, struct sk_buff *skb
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rfcomm_send_msc(s, 0, dlci, msc->v24_sig);
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d->mscex |= RFCOMM_MSCEX_RX;
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} else
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} else
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d->mscex |= RFCOMM_MSCEX_TX;
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return 0;
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@ -745,20 +745,143 @@ static int rfcomm_tty_ioctl(struct tty_struct *tty, struct file *filp, unsigned
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return -ENOIOCTLCMD;
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}
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#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
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static void rfcomm_tty_set_termios(struct tty_struct *tty, struct termios *old)
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{
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BT_DBG("tty %p", tty);
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struct termios *new = (struct termios *) tty->termios;
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int old_baud_rate = tty_termios_baud_rate(old);
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int new_baud_rate = tty_termios_baud_rate(new);
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if ((tty->termios->c_cflag == old->c_cflag) &&
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(RELEVANT_IFLAG(tty->termios->c_iflag) == RELEVANT_IFLAG(old->c_iflag)))
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return;
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u8 baud, data_bits, stop_bits, parity, x_on, x_off;
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u16 changes = 0;
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/* handle turning off CRTSCTS */
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if ((old->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) {
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BT_DBG("turning off CRTSCTS");
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struct rfcomm_dev *dev = (struct rfcomm_dev *) tty->driver_data;
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BT_DBG("tty %p termios %p", tty, old);
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/* Handle turning off CRTSCTS */
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if ((old->c_cflag & CRTSCTS) && !(new->c_cflag & CRTSCTS))
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BT_DBG("Turning off CRTSCTS unsupported");
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/* Parity on/off and when on, odd/even */
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if (((old->c_cflag & PARENB) != (new->c_cflag & PARENB)) ||
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((old->c_cflag & PARODD) != (new->c_cflag & PARODD)) ) {
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changes |= RFCOMM_RPN_PM_PARITY;
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BT_DBG("Parity change detected.");
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}
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/* Mark and space parity are not supported! */
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if (new->c_cflag & PARENB) {
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if (new->c_cflag & PARODD) {
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BT_DBG("Parity is ODD");
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parity = RFCOMM_RPN_PARITY_ODD;
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} else {
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BT_DBG("Parity is EVEN");
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parity = RFCOMM_RPN_PARITY_EVEN;
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}
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} else {
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BT_DBG("Parity is OFF");
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parity = RFCOMM_RPN_PARITY_NONE;
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}
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/* Setting the x_on / x_off characters */
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if (old->c_cc[VSTOP] != new->c_cc[VSTOP]) {
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BT_DBG("XOFF custom");
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x_on = new->c_cc[VSTOP];
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changes |= RFCOMM_RPN_PM_XON;
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} else {
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BT_DBG("XOFF default");
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x_on = RFCOMM_RPN_XON_CHAR;
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}
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if (old->c_cc[VSTART] != new->c_cc[VSTART]) {
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BT_DBG("XON custom");
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x_off = new->c_cc[VSTART];
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changes |= RFCOMM_RPN_PM_XOFF;
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} else {
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BT_DBG("XON default");
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x_off = RFCOMM_RPN_XOFF_CHAR;
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}
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/* Handle setting of stop bits */
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if ((old->c_cflag & CSTOPB) != (new->c_cflag & CSTOPB))
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changes |= RFCOMM_RPN_PM_STOP;
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/* POSIX does not support 1.5 stop bits and RFCOMM does not
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* support 2 stop bits. So a request for 2 stop bits gets
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* translated to 1.5 stop bits */
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if (new->c_cflag & CSTOPB) {
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stop_bits = RFCOMM_RPN_STOP_15;
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} else {
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stop_bits = RFCOMM_RPN_STOP_1;
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}
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/* Handle number of data bits [5-8] */
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if ((old->c_cflag & CSIZE) != (new->c_cflag & CSIZE))
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changes |= RFCOMM_RPN_PM_DATA;
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switch (new->c_cflag & CSIZE) {
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case CS5:
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data_bits = RFCOMM_RPN_DATA_5;
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break;
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case CS6:
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data_bits = RFCOMM_RPN_DATA_6;
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break;
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case CS7:
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data_bits = RFCOMM_RPN_DATA_7;
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break;
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case CS8:
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data_bits = RFCOMM_RPN_DATA_8;
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break;
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default:
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data_bits = RFCOMM_RPN_DATA_8;
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break;
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}
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/* Handle baudrate settings */
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if (old_baud_rate != new_baud_rate)
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changes |= RFCOMM_RPN_PM_BITRATE;
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switch (new_baud_rate) {
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case 2400:
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baud = RFCOMM_RPN_BR_2400;
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break;
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case 4800:
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baud = RFCOMM_RPN_BR_4800;
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break;
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case 7200:
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baud = RFCOMM_RPN_BR_7200;
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break;
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case 9600:
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baud = RFCOMM_RPN_BR_9600;
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break;
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case 19200:
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baud = RFCOMM_RPN_BR_19200;
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break;
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case 38400:
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baud = RFCOMM_RPN_BR_38400;
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break;
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case 57600:
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baud = RFCOMM_RPN_BR_57600;
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break;
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case 115200:
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baud = RFCOMM_RPN_BR_115200;
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break;
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case 230400:
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baud = RFCOMM_RPN_BR_230400;
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break;
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default:
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/* 9600 is standard accordinag to the RFCOMM specification */
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baud = RFCOMM_RPN_BR_9600;
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break;
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}
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if (changes)
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rfcomm_send_rpn(dev->dlc->session, 1, dev->dlc->dlci, baud,
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data_bits, stop_bits, parity,
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RFCOMM_RPN_FLOW_NONE, x_on, x_off, changes);
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return;
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}
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static void rfcomm_tty_throttle(struct tty_struct *tty)
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@ -766,7 +889,7 @@ static void rfcomm_tty_throttle(struct tty_struct *tty)
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|||
struct rfcomm_dev *dev = (struct rfcomm_dev *) tty->driver_data;
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||||
|
||||
BT_DBG("tty %p dev %p", tty, dev);
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||||
|
||||
|
||||
rfcomm_dlc_throttle(dev->dlc);
|
||||
}
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||||
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||||
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|
@ -775,7 +898,7 @@ static void rfcomm_tty_unthrottle(struct tty_struct *tty)
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|||
struct rfcomm_dev *dev = (struct rfcomm_dev *) tty->driver_data;
|
||||
|
||||
BT_DBG("tty %p dev %p", tty, dev);
|
||||
|
||||
|
||||
rfcomm_dlc_unthrottle(dev->dlc);
|
||||
}
|
||||
|
||||
|
|
@ -846,35 +969,35 @@ static int rfcomm_tty_tiocmget(struct tty_struct *tty, struct file *filp)
|
|||
|
||||
static int rfcomm_tty_tiocmset(struct tty_struct *tty, struct file *filp, unsigned int set, unsigned int clear)
|
||||
{
|
||||
struct rfcomm_dev *dev = (struct rfcomm_dev *) tty->driver_data;
|
||||
struct rfcomm_dlc *dlc = dev->dlc;
|
||||
u8 v24_sig;
|
||||
struct rfcomm_dev *dev = (struct rfcomm_dev *) tty->driver_data;
|
||||
struct rfcomm_dlc *dlc = dev->dlc;
|
||||
u8 v24_sig;
|
||||
|
||||
BT_DBG("tty %p dev %p set 0x%02x clear 0x%02x", tty, dev, set, clear);
|
||||
|
||||
rfcomm_dlc_get_modem_status(dlc, &v24_sig);
|
||||
rfcomm_dlc_get_modem_status(dlc, &v24_sig);
|
||||
|
||||
if (set & TIOCM_DSR || set & TIOCM_DTR)
|
||||
v24_sig |= RFCOMM_V24_RTC;
|
||||
if (set & TIOCM_RTS || set & TIOCM_CTS)
|
||||
v24_sig |= RFCOMM_V24_RTR;
|
||||
if (set & TIOCM_RI)
|
||||
v24_sig |= RFCOMM_V24_IC;
|
||||
if (set & TIOCM_CD)
|
||||
v24_sig |= RFCOMM_V24_DV;
|
||||
if (set & TIOCM_DSR || set & TIOCM_DTR)
|
||||
v24_sig |= RFCOMM_V24_RTC;
|
||||
if (set & TIOCM_RTS || set & TIOCM_CTS)
|
||||
v24_sig |= RFCOMM_V24_RTR;
|
||||
if (set & TIOCM_RI)
|
||||
v24_sig |= RFCOMM_V24_IC;
|
||||
if (set & TIOCM_CD)
|
||||
v24_sig |= RFCOMM_V24_DV;
|
||||
|
||||
if (clear & TIOCM_DSR || clear & TIOCM_DTR)
|
||||
v24_sig &= ~RFCOMM_V24_RTC;
|
||||
if (clear & TIOCM_RTS || clear & TIOCM_CTS)
|
||||
v24_sig &= ~RFCOMM_V24_RTR;
|
||||
if (clear & TIOCM_RI)
|
||||
v24_sig &= ~RFCOMM_V24_IC;
|
||||
if (clear & TIOCM_CD)
|
||||
v24_sig &= ~RFCOMM_V24_DV;
|
||||
if (clear & TIOCM_DSR || clear & TIOCM_DTR)
|
||||
v24_sig &= ~RFCOMM_V24_RTC;
|
||||
if (clear & TIOCM_RTS || clear & TIOCM_CTS)
|
||||
v24_sig &= ~RFCOMM_V24_RTR;
|
||||
if (clear & TIOCM_RI)
|
||||
v24_sig &= ~RFCOMM_V24_IC;
|
||||
if (clear & TIOCM_CD)
|
||||
v24_sig &= ~RFCOMM_V24_DV;
|
||||
|
||||
rfcomm_dlc_set_modem_status(dlc, v24_sig);
|
||||
rfcomm_dlc_set_modem_status(dlc, v24_sig);
|
||||
|
||||
return 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* ---- TTY structure ---- */
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user