diff options
Diffstat (limited to 'hw/bt/l2cap.c')
| -rw-r--r-- | hw/bt/l2cap.c | 1367 |
1 files changed, 0 insertions, 1367 deletions
diff --git a/hw/bt/l2cap.c b/hw/bt/l2cap.c deleted file mode 100644 index d67098a..0000000 --- a/hw/bt/l2cap.c +++ /dev/null @@ -1,1367 +0,0 @@ -/* - * QEMU Bluetooth L2CAP logic. - * - * Copyright (C) 2008 Andrzej Zaborowski <balrog@zabor.org> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see <http://www.gnu.org/licenses/>. - */ - -#include "qemu/osdep.h" -#include "qemu/error-report.h" -#include "qemu/timer.h" -#include "qemu/bswap.h" -#include "hw/bt.h" - -#define L2CAP_CID_MAX 0x100 /* Between 0x40 and 0x10000 */ - -struct l2cap_instance_s { - struct bt_link_s *link; - struct bt_l2cap_device_s *dev; - int role; - - uint8_t frame_in[65535 + L2CAP_HDR_SIZE] __attribute__ ((aligned (4))); - int frame_in_len; - - uint8_t frame_out[65535 + L2CAP_HDR_SIZE] __attribute__ ((aligned (4))); - int frame_out_len; - - /* Signalling channel timers. They exist per-request but we can make - * sure we have no more than one outstanding request at any time. */ - QEMUTimer *rtx; - QEMUTimer *ertx; - - int last_id; - int next_id; - - struct l2cap_chan_s { - struct bt_l2cap_conn_params_s params; - - void (*frame_in)(struct l2cap_chan_s *chan, uint16_t cid, - const l2cap_hdr *hdr, int len); - int mps; - int min_mtu; - - struct l2cap_instance_s *l2cap; - - /* Only allocated channels */ - uint16_t remote_cid; -#define L2CAP_CFG_INIT 2 -#define L2CAP_CFG_ACC 1 - int config_req_id; /* TODO: handle outgoing requests generically */ - int config; - - /* Only connection-oriented channels. Note: if we allow the tx and - * rx traffic to be in different modes at any time, we need two. */ - int mode; - - /* Only flow-controlled, connection-oriented channels */ - uint8_t sdu[65536]; /* TODO: dynamically allocate */ - int len_cur, len_total; - int rexmit; - int monitor_timeout; - QEMUTimer *monitor_timer; - QEMUTimer *retransmission_timer; - } *cid[L2CAP_CID_MAX]; - /* The channel state machine states map as following: - * CLOSED -> !cid[N] - * WAIT_CONNECT -> never occurs - * WAIT_CONNECT_RSP -> never occurs - * CONFIG -> cid[N] && config < 3 - * WAIT_CONFIG -> never occurs, cid[N] && config == 0 && !config_r - * WAIT_SEND_CONFIG -> never occurs, cid[N] && config == 1 && !config_r - * WAIT_CONFIG_REQ_RSP -> cid[N] && config == 0 && config_req_id - * WAIT_CONFIG_RSP -> cid[N] && config == 1 && config_req_id - * WAIT_CONFIG_REQ -> cid[N] && config == 2 - * OPEN -> cid[N] && config == 3 - * WAIT_DISCONNECT -> never occurs - */ - - struct l2cap_chan_s signalling_ch; - struct l2cap_chan_s group_ch; -}; - -struct slave_l2cap_instance_s { - struct bt_link_s link; /* Underlying logical link (ACL) */ - struct l2cap_instance_s l2cap; -}; - -struct bt_l2cap_psm_s { - int psm; - int min_mtu; - int (*new_channel)(struct bt_l2cap_device_s *device, - struct bt_l2cap_conn_params_s *params); - struct bt_l2cap_psm_s *next; -}; - -static const uint16_t l2cap_fcs16_table[256] = { - 0x0000, 0xc0c1, 0xc181, 0x0140, 0xc301, 0x03c0, 0x0280, 0xc241, - 0xc601, 0x06c0, 0x0780, 0xc741, 0x0500, 0xc5c1, 0xc481, 0x0440, - 0xcc01, 0x0cc0, 0x0d80, 0xcd41, 0x0f00, 0xcfc1, 0xce81, 0x0e40, - 0x0a00, 0xcac1, 0xcb81, 0x0b40, 0xc901, 0x09c0, 0x0880, 0xc841, - 0xd801, 0x18c0, 0x1980, 0xd941, 0x1b00, 0xdbc1, 0xda81, 0x1a40, - 0x1e00, 0xdec1, 0xdf81, 0x1f40, 0xdd01, 0x1dc0, 0x1c80, 0xdc41, - 0x1400, 0xd4c1, 0xd581, 0x1540, 0xd701, 0x17c0, 0x1680, 0xd641, - 0xd201, 0x12c0, 0x1380, 0xd341, 0x1100, 0xd1c1, 0xd081, 0x1040, - 0xf001, 0x30c0, 0x3180, 0xf141, 0x3300, 0xf3c1, 0xf281, 0x3240, - 0x3600, 0xf6c1, 0xf781, 0x3740, 0xf501, 0x35c0, 0x3480, 0xf441, - 0x3c00, 0xfcc1, 0xfd81, 0x3d40, 0xff01, 0x3fc0, 0x3e80, 0xfe41, - 0xfa01, 0x3ac0, 0x3b80, 0xfb41, 0x3900, 0xf9c1, 0xf881, 0x3840, - 0x2800, 0xe8c1, 0xe981, 0x2940, 0xeb01, 0x2bc0, 0x2a80, 0xea41, - 0xee01, 0x2ec0, 0x2f80, 0xef41, 0x2d00, 0xedc1, 0xec81, 0x2c40, - 0xe401, 0x24c0, 0x2580, 0xe541, 0x2700, 0xe7c1, 0xe681, 0x2640, - 0x2200, 0xe2c1, 0xe381, 0x2340, 0xe101, 0x21c0, 0x2080, 0xe041, - 0xa001, 0x60c0, 0x6180, 0xa141, 0x6300, 0xa3c1, 0xa281, 0x6240, - 0x6600, 0xa6c1, 0xa781, 0x6740, 0xa501, 0x65c0, 0x6480, 0xa441, - 0x6c00, 0xacc1, 0xad81, 0x6d40, 0xaf01, 0x6fc0, 0x6e80, 0xae41, - 0xaa01, 0x6ac0, 0x6b80, 0xab41, 0x6900, 0xa9c1, 0xa881, 0x6840, - 0x7800, 0xb8c1, 0xb981, 0x7940, 0xbb01, 0x7bc0, 0x7a80, 0xba41, - 0xbe01, 0x7ec0, 0x7f80, 0xbf41, 0x7d00, 0xbdc1, 0xbc81, 0x7c40, - 0xb401, 0x74c0, 0x7580, 0xb541, 0x7700, 0xb7c1, 0xb681, 0x7640, - 0x7200, 0xb2c1, 0xb381, 0x7340, 0xb101, 0x71c0, 0x7080, 0xb041, - 0x5000, 0x90c1, 0x9181, 0x5140, 0x9301, 0x53c0, 0x5280, 0x9241, - 0x9601, 0x56c0, 0x5780, 0x9741, 0x5500, 0x95c1, 0x9481, 0x5440, - 0x9c01, 0x5cc0, 0x5d80, 0x9d41, 0x5f00, 0x9fc1, 0x9e81, 0x5e40, - 0x5a00, 0x9ac1, 0x9b81, 0x5b40, 0x9901, 0x59c0, 0x5880, 0x9841, - 0x8801, 0x48c0, 0x4980, 0x8941, 0x4b00, 0x8bc1, 0x8a81, 0x4a40, - 0x4e00, 0x8ec1, 0x8f81, 0x4f40, 0x8d01, 0x4dc0, 0x4c80, 0x8c41, - 0x4400, 0x84c1, 0x8581, 0x4540, 0x8701, 0x47c0, 0x4680, 0x8641, - 0x8201, 0x42c0, 0x4380, 0x8341, 0x4100, 0x81c1, 0x8081, 0x4040, -}; - -static uint16_t l2cap_fcs16(const uint8_t *message, int len) -{ - uint16_t fcs = 0x0000; - - while (len --) -#if 0 - { - int i; - - fcs ^= *message ++; - for (i = 8; i; -- i) - if (fcs & 1) - fcs = (fcs >> 1) ^ 0xa001; - else - fcs = (fcs >> 1); - } -#else - fcs = (fcs >> 8) ^ l2cap_fcs16_table[(fcs ^ *message ++) & 0xff]; -#endif - - return fcs; -} - -/* L2CAP layer logic (protocol) */ - -static void l2cap_retransmission_timer_update(struct l2cap_chan_s *ch) -{ -#if 0 - if (ch->mode != L2CAP_MODE_BASIC && ch->rexmit) - timer_mod(ch->retransmission_timer); - else - timer_del(ch->retransmission_timer); -#endif -} - -static void l2cap_monitor_timer_update(struct l2cap_chan_s *ch) -{ -#if 0 - if (ch->mode != L2CAP_MODE_BASIC && !ch->rexmit) - timer_mod(ch->monitor_timer); - else - timer_del(ch->monitor_timer); -#endif -} - -static void l2cap_command_reject(struct l2cap_instance_s *l2cap, int id, - uint16_t reason, const void *data, int plen) -{ - uint8_t *pkt; - l2cap_cmd_hdr *hdr; - l2cap_cmd_rej *params; - uint16_t len; - - reason = cpu_to_le16(reason); - len = cpu_to_le16(L2CAP_CMD_REJ_SIZE + plen); - - pkt = l2cap->signalling_ch.params.sdu_out(&l2cap->signalling_ch.params, - L2CAP_CMD_HDR_SIZE + L2CAP_CMD_REJ_SIZE + plen); - hdr = (void *) (pkt + 0); - params = (void *) (pkt + L2CAP_CMD_HDR_SIZE); - - hdr->code = L2CAP_COMMAND_REJ; - hdr->ident = id; - memcpy(&hdr->len, &len, sizeof(hdr->len)); - memcpy(¶ms->reason, &reason, sizeof(reason)); - if (plen) - memcpy(pkt + L2CAP_CMD_HDR_SIZE + L2CAP_CMD_REJ_SIZE, data, plen); - - l2cap->signalling_ch.params.sdu_submit(&l2cap->signalling_ch.params); -} - -static void l2cap_command_reject_cid(struct l2cap_instance_s *l2cap, int id, - uint16_t reason, uint16_t dcid, uint16_t scid) -{ - l2cap_cmd_rej_cid params = { - .dcid = dcid, - .scid = scid, - }; - - l2cap_command_reject(l2cap, id, reason, ¶ms, L2CAP_CMD_REJ_CID_SIZE); -} - -static void l2cap_connection_response(struct l2cap_instance_s *l2cap, - int dcid, int scid, int result, int status) -{ - uint8_t *pkt; - l2cap_cmd_hdr *hdr; - l2cap_conn_rsp *params; - - pkt = l2cap->signalling_ch.params.sdu_out(&l2cap->signalling_ch.params, - L2CAP_CMD_HDR_SIZE + L2CAP_CONN_RSP_SIZE); - hdr = (void *) (pkt + 0); - params = (void *) (pkt + L2CAP_CMD_HDR_SIZE); - - hdr->code = L2CAP_CONN_RSP; - hdr->ident = l2cap->last_id; - hdr->len = cpu_to_le16(L2CAP_CONN_RSP_SIZE); - - params->dcid = cpu_to_le16(dcid); - params->scid = cpu_to_le16(scid); - params->result = cpu_to_le16(result); - params->status = cpu_to_le16(status); - - l2cap->signalling_ch.params.sdu_submit(&l2cap->signalling_ch.params); -} - -static void l2cap_configuration_request(struct l2cap_instance_s *l2cap, - int dcid, int flag, const uint8_t *data, int len) -{ - uint8_t *pkt; - l2cap_cmd_hdr *hdr; - l2cap_conf_req *params; - - pkt = l2cap->signalling_ch.params.sdu_out(&l2cap->signalling_ch.params, - L2CAP_CMD_HDR_SIZE + L2CAP_CONF_REQ_SIZE(len)); - hdr = (void *) (pkt + 0); - params = (void *) (pkt + L2CAP_CMD_HDR_SIZE); - - /* TODO: unify the id sequencing */ - l2cap->last_id = l2cap->next_id; - l2cap->next_id = l2cap->next_id == 255 ? 1 : l2cap->next_id + 1; - - hdr->code = L2CAP_CONF_REQ; - hdr->ident = l2cap->last_id; - hdr->len = cpu_to_le16(L2CAP_CONF_REQ_SIZE(len)); - - params->dcid = cpu_to_le16(dcid); - params->flags = cpu_to_le16(flag); - if (len) - memcpy(params->data, data, len); - - l2cap->signalling_ch.params.sdu_submit(&l2cap->signalling_ch.params); -} - -static void l2cap_configuration_response(struct l2cap_instance_s *l2cap, - int scid, int flag, int result, const uint8_t *data, int len) -{ - uint8_t *pkt; - l2cap_cmd_hdr *hdr; - l2cap_conf_rsp *params; - - pkt = l2cap->signalling_ch.params.sdu_out(&l2cap->signalling_ch.params, - L2CAP_CMD_HDR_SIZE + L2CAP_CONF_RSP_SIZE(len)); - hdr = (void *) (pkt + 0); - params = (void *) (pkt + L2CAP_CMD_HDR_SIZE); - - hdr->code = L2CAP_CONF_RSP; - hdr->ident = l2cap->last_id; - hdr->len = cpu_to_le16(L2CAP_CONF_RSP_SIZE(len)); - - params->scid = cpu_to_le16(scid); - params->flags = cpu_to_le16(flag); - params->result = cpu_to_le16(result); - if (len) - memcpy(params->data, data, len); - - l2cap->signalling_ch.params.sdu_submit(&l2cap->signalling_ch.params); -} - -static void l2cap_disconnection_response(struct l2cap_instance_s *l2cap, - int dcid, int scid) -{ - uint8_t *pkt; - l2cap_cmd_hdr *hdr; - l2cap_disconn_rsp *params; - - pkt = l2cap->signalling_ch.params.sdu_out(&l2cap->signalling_ch.params, - L2CAP_CMD_HDR_SIZE + L2CAP_DISCONN_RSP_SIZE); - hdr = (void *) (pkt + 0); - params = (void *) (pkt + L2CAP_CMD_HDR_SIZE); - - hdr->code = L2CAP_DISCONN_RSP; - hdr->ident = l2cap->last_id; - hdr->len = cpu_to_le16(L2CAP_DISCONN_RSP_SIZE); - - params->dcid = cpu_to_le16(dcid); - params->scid = cpu_to_le16(scid); - - l2cap->signalling_ch.params.sdu_submit(&l2cap->signalling_ch.params); -} - -static void l2cap_echo_response(struct l2cap_instance_s *l2cap, - const uint8_t *data, int len) -{ - uint8_t *pkt; - l2cap_cmd_hdr *hdr; - uint8_t *params; - - pkt = l2cap->signalling_ch.params.sdu_out(&l2cap->signalling_ch.params, - L2CAP_CMD_HDR_SIZE + len); - hdr = (void *) (pkt + 0); - params = (void *) (pkt + L2CAP_CMD_HDR_SIZE); - - hdr->code = L2CAP_ECHO_RSP; - hdr->ident = l2cap->last_id; - hdr->len = cpu_to_le16(len); - - memcpy(params, data, len); - - l2cap->signalling_ch.params.sdu_submit(&l2cap->signalling_ch.params); -} - -static void l2cap_info_response(struct l2cap_instance_s *l2cap, int type, - int result, const uint8_t *data, int len) -{ - uint8_t *pkt; - l2cap_cmd_hdr *hdr; - l2cap_info_rsp *params; - - pkt = l2cap->signalling_ch.params.sdu_out(&l2cap->signalling_ch.params, - L2CAP_CMD_HDR_SIZE + L2CAP_INFO_RSP_SIZE + len); - hdr = (void *) (pkt + 0); - params = (void *) (pkt + L2CAP_CMD_HDR_SIZE); - - hdr->code = L2CAP_INFO_RSP; - hdr->ident = l2cap->last_id; - hdr->len = cpu_to_le16(L2CAP_INFO_RSP_SIZE + len); - - params->type = cpu_to_le16(type); - params->result = cpu_to_le16(result); - if (len) - memcpy(params->data, data, len); - - l2cap->signalling_ch.params.sdu_submit(&l2cap->signalling_ch.params); -} - -static uint8_t *l2cap_bframe_out(struct bt_l2cap_conn_params_s *parm, int len); -static void l2cap_bframe_submit(struct bt_l2cap_conn_params_s *parms); -#if 0 -static uint8_t *l2cap_iframe_out(struct bt_l2cap_conn_params_s *parm, int len); -static void l2cap_iframe_submit(struct bt_l2cap_conn_params_s *parm); -#endif -static void l2cap_bframe_in(struct l2cap_chan_s *ch, uint16_t cid, - const l2cap_hdr *hdr, int len); -static void l2cap_iframe_in(struct l2cap_chan_s *ch, uint16_t cid, - const l2cap_hdr *hdr, int len); - -static int l2cap_cid_new(struct l2cap_instance_s *l2cap) -{ - int i; - - for (i = L2CAP_CID_ALLOC; i < L2CAP_CID_MAX; i ++) - if (!l2cap->cid[i]) - return i; - - return L2CAP_CID_INVALID; -} - -static inline struct bt_l2cap_psm_s *l2cap_psm( - struct bt_l2cap_device_s *device, int psm) -{ - struct bt_l2cap_psm_s *ret = device->first_psm; - - while (ret && ret->psm != psm) - ret = ret->next; - - return ret; -} - -static struct l2cap_chan_s *l2cap_channel_open(struct l2cap_instance_s *l2cap, - int psm, int source_cid) -{ - struct l2cap_chan_s *ch = NULL; - struct bt_l2cap_psm_s *psm_info; - int result, status; - int cid = l2cap_cid_new(l2cap); - - if (cid) { - /* See what the channel is to be used for.. */ - psm_info = l2cap_psm(l2cap->dev, psm); - - if (psm_info) { - /* Device supports this use-case. */ - ch = g_malloc0(sizeof(*ch)); - ch->params.sdu_out = l2cap_bframe_out; - ch->params.sdu_submit = l2cap_bframe_submit; - ch->frame_in = l2cap_bframe_in; - ch->mps = 65536; - ch->min_mtu = MAX(48, psm_info->min_mtu); - ch->params.remote_mtu = MAX(672, ch->min_mtu); - ch->remote_cid = source_cid; - ch->mode = L2CAP_MODE_BASIC; - ch->l2cap = l2cap; - - /* Does it feel like opening yet another channel though? */ - if (!psm_info->new_channel(l2cap->dev, &ch->params)) { - l2cap->cid[cid] = ch; - - result = L2CAP_CR_SUCCESS; - status = L2CAP_CS_NO_INFO; - } else { - g_free(ch); - ch = NULL; - result = L2CAP_CR_NO_MEM; - status = L2CAP_CS_NO_INFO; - } - } else { - result = L2CAP_CR_BAD_PSM; - status = L2CAP_CS_NO_INFO; - } - } else { - result = L2CAP_CR_NO_MEM; - status = L2CAP_CS_NO_INFO; - } - - l2cap_connection_response(l2cap, cid, source_cid, result, status); - - return ch; -} - -static void l2cap_channel_close(struct l2cap_instance_s *l2cap, - int cid, int source_cid) -{ - struct l2cap_chan_s *ch = NULL; - - /* According to Volume 3, section 6.1.1, pg 1048 of BT Core V2.0, a - * connection in CLOSED state still responds with a L2CAP_DisconnectRsp - * message on an L2CAP_DisconnectReq event. */ - if (unlikely(cid < L2CAP_CID_ALLOC)) { - l2cap_command_reject_cid(l2cap, l2cap->last_id, L2CAP_REJ_CID_INVAL, - cid, source_cid); - return; - } - if (likely(cid >= L2CAP_CID_ALLOC && cid < L2CAP_CID_MAX)) - ch = l2cap->cid[cid]; - - if (likely(ch)) { - if (ch->remote_cid != source_cid) { - error_report("%s: Ignoring a Disconnection Request with the " - "invalid SCID %04x.", __func__, source_cid); - return; - } - - l2cap->cid[cid] = NULL; - - ch->params.close(ch->params.opaque); - g_free(ch); - } - - l2cap_disconnection_response(l2cap, cid, source_cid); -} - -static void l2cap_channel_config_null(struct l2cap_instance_s *l2cap, - struct l2cap_chan_s *ch) -{ - l2cap_configuration_request(l2cap, ch->remote_cid, 0, NULL, 0); - ch->config_req_id = l2cap->last_id; - ch->config &= ~L2CAP_CFG_INIT; -} - -static void l2cap_channel_config_req_event(struct l2cap_instance_s *l2cap, - struct l2cap_chan_s *ch) -{ - /* Use all default channel options and terminate negotiation. */ - l2cap_channel_config_null(l2cap, ch); -} - -static int l2cap_channel_config(struct l2cap_instance_s *l2cap, - struct l2cap_chan_s *ch, int flag, - const uint8_t *data, int len) -{ - l2cap_conf_opt *opt; - l2cap_conf_opt_qos *qos; - uint32_t val; - uint8_t rsp[len]; - int result = L2CAP_CONF_SUCCESS; - - data = memcpy(rsp, data, len); - while (len) { - opt = (void *) data; - - if (len < L2CAP_CONF_OPT_SIZE || - len < L2CAP_CONF_OPT_SIZE + opt->len) { - result = L2CAP_CONF_REJECT; - break; - } - data += L2CAP_CONF_OPT_SIZE + opt->len; - len -= L2CAP_CONF_OPT_SIZE + opt->len; - - switch (opt->type & 0x7f) { - case L2CAP_CONF_MTU: - if (opt->len != 2) { - result = L2CAP_CONF_REJECT; - break; - } - - /* MTU */ - val = lduw_le_p(opt->val); - if (val < ch->min_mtu) { - stw_le_p(opt->val, ch->min_mtu); - result = L2CAP_CONF_UNACCEPT; - break; - } - - ch->params.remote_mtu = val; - break; - - case L2CAP_CONF_FLUSH_TO: - if (opt->len != 2) { - result = L2CAP_CONF_REJECT; - break; - } - - /* Flush Timeout */ - val = lduw_le_p(opt->val); - if (val < 0x0001) { - opt->val[0] = 0xff; - opt->val[1] = 0xff; - result = L2CAP_CONF_UNACCEPT; - break; - } - break; - - case L2CAP_CONF_QOS: - if (opt->len != L2CAP_CONF_OPT_QOS_SIZE) { - result = L2CAP_CONF_REJECT; - break; - } - qos = (void *) opt->val; - - /* Flags */ - val = qos->flags; - if (val) { - qos->flags = 0; - result = L2CAP_CONF_UNACCEPT; - } - - /* Service type */ - val = qos->service_type; - if (val != L2CAP_CONF_QOS_BEST_EFFORT && - val != L2CAP_CONF_QOS_NO_TRAFFIC) { - qos->service_type = L2CAP_CONF_QOS_BEST_EFFORT; - result = L2CAP_CONF_UNACCEPT; - } - - if (val != L2CAP_CONF_QOS_NO_TRAFFIC) { - /* XXX: These values should possibly be calculated - * based on LM / baseband properties also. */ - - /* Token rate */ - val = le32_to_cpu(qos->token_rate); - if (val == L2CAP_CONF_QOS_WILDCARD) - qos->token_rate = cpu_to_le32(0x100000); - - /* Token bucket size */ - val = le32_to_cpu(qos->token_bucket_size); - if (val == L2CAP_CONF_QOS_WILDCARD) - qos->token_bucket_size = cpu_to_le32(65500); - - /* Any Peak bandwidth value is correct to return as-is */ - /* Any Access latency value is correct to return as-is */ - /* Any Delay variation value is correct to return as-is */ - } - break; - - case L2CAP_CONF_RFC: - if (opt->len != 9) { - result = L2CAP_CONF_REJECT; - break; - } - - /* Mode */ - val = opt->val[0]; - switch (val) { - case L2CAP_MODE_BASIC: - ch->mode = val; - ch->frame_in = l2cap_bframe_in; - - /* All other parameters shall be ignored */ - break; - - case L2CAP_MODE_RETRANS: - case L2CAP_MODE_FLOWCTL: - ch->mode = val; - ch->frame_in = l2cap_iframe_in; - /* Note: most of these parameters refer to incoming traffic - * so we don't need to save them as long as we can accept - * incoming PDUs at any values of the parameters. */ - - /* TxWindow size */ - val = opt->val[1]; - if (val < 1 || val > 32) { - opt->val[1] = 32; - result = L2CAP_CONF_UNACCEPT; - break; - } - - /* MaxTransmit */ - val = opt->val[2]; - if (val < 1) { - opt->val[2] = 1; - result = L2CAP_CONF_UNACCEPT; - break; - } - - /* Remote Retransmission time-out shouldn't affect local - * operation (?) */ - - /* The Monitor time-out drives the local Monitor timer (?), - * so save the value. */ - val = (opt->val[6] << 8) | opt->val[5]; - if (val < 30) { - opt->val[5] = 100 & 0xff; - opt->val[6] = 100 >> 8; - result = L2CAP_CONF_UNACCEPT; - break; - } - ch->monitor_timeout = val; - l2cap_monitor_timer_update(ch); - - /* MPS */ - val = (opt->val[8] << 8) | opt->val[7]; - if (val < ch->min_mtu) { - opt->val[7] = ch->min_mtu & 0xff; - opt->val[8] = ch->min_mtu >> 8; - result = L2CAP_CONF_UNACCEPT; - break; - } - ch->mps = val; - break; - - default: - result = L2CAP_CONF_UNACCEPT; - break; - } - break; - - default: - if (!(opt->type >> 7)) - result = L2CAP_CONF_UNKNOWN; - break; - } - - if (result != L2CAP_CONF_SUCCESS) - break; /* XXX: should continue? */ - } - - l2cap_configuration_response(l2cap, ch->remote_cid, - flag, result, rsp, len); - - return result == L2CAP_CONF_SUCCESS && !flag; -} - -static void l2cap_channel_config_req_msg(struct l2cap_instance_s *l2cap, - int flag, int cid, const uint8_t *data, int len) -{ - struct l2cap_chan_s *ch; - - if (unlikely(cid >= L2CAP_CID_MAX || !l2cap->cid[cid])) { - l2cap_command_reject_cid(l2cap, l2cap->last_id, L2CAP_REJ_CID_INVAL, - cid, 0x0000); - return; - } - ch = l2cap->cid[cid]; - - /* From OPEN go to WAIT_CONFIG_REQ and from WAIT_CONFIG_REQ_RSP to - * WAIT_CONFIG_REQ_RSP. This is assuming the transition chart for OPEN - * on pg 1053, section 6.1.5, volume 3 of BT Core V2.0 has a mistake - * and on options-acceptable we go back to OPEN and otherwise to - * WAIT_CONFIG_REQ and not the other way. */ - ch->config &= ~L2CAP_CFG_ACC; - - if (l2cap_channel_config(l2cap, ch, flag, data, len)) - /* Go to OPEN or WAIT_CONFIG_RSP */ - ch->config |= L2CAP_CFG_ACC; - - /* TODO: if the incoming traffic flow control or retransmission mode - * changed then we probably need to also generate the - * ConfigureChannel_Req event and set the outgoing traffic to the same - * mode. */ - if (!(ch->config & L2CAP_CFG_INIT) && (ch->config & L2CAP_CFG_ACC) && - !ch->config_req_id) - l2cap_channel_config_req_event(l2cap, ch); -} - -static int l2cap_channel_config_rsp_msg(struct l2cap_instance_s *l2cap, - int result, int flag, int cid, const uint8_t *data, int len) -{ - struct l2cap_chan_s *ch; - - if (unlikely(cid >= L2CAP_CID_MAX || !l2cap->cid[cid])) { - l2cap_command_reject_cid(l2cap, l2cap->last_id, L2CAP_REJ_CID_INVAL, - cid, 0x0000); - return 0; - } - ch = l2cap->cid[cid]; - - if (ch->config_req_id != l2cap->last_id) - return 1; - ch->config_req_id = 0; - - if (result == L2CAP_CONF_SUCCESS) { - if (!flag) - ch->config |= L2CAP_CFG_INIT; - else - l2cap_channel_config_null(l2cap, ch); - } else - /* Retry until we succeed */ - l2cap_channel_config_req_event(l2cap, ch); - - return 0; -} - -static void l2cap_channel_open_req_msg(struct l2cap_instance_s *l2cap, - int psm, int source_cid) -{ - struct l2cap_chan_s *ch = l2cap_channel_open(l2cap, psm, source_cid); - - if (!ch) - return; - - /* Optional */ - if (!(ch->config & L2CAP_CFG_INIT) && !ch->config_req_id) - l2cap_channel_config_req_event(l2cap, ch); -} - -static void l2cap_info(struct l2cap_instance_s *l2cap, int type) -{ - uint8_t data[4]; - int len = 0; - int result = L2CAP_IR_SUCCESS; - - switch (type) { - case L2CAP_IT_CL_MTU: - data[len ++] = l2cap->group_ch.mps & 0xff; - data[len ++] = l2cap->group_ch.mps >> 8; - break; - - case L2CAP_IT_FEAT_MASK: - /* (Prematurely) report Flow control and Retransmission modes. */ - data[len ++] = 0x03; - data[len ++] = 0x00; - data[len ++] = 0x00; - data[len ++] = 0x00; - break; - - default: - result = L2CAP_IR_NOTSUPP; - } - - l2cap_info_response(l2cap, type, result, data, len); -} - -static void l2cap_command(struct l2cap_instance_s *l2cap, int code, int id, - const uint8_t *params, int len) -{ - int err; - -#if 0 - /* TODO: do the IDs really have to be in sequence? */ - if (!id || (id != l2cap->last_id && id != l2cap->next_id)) { - error_report("%s: out of sequence command packet ignored.", - __func__); - return; - } -#else - l2cap->next_id = id; -#endif - if (id == l2cap->next_id) { - l2cap->last_id = l2cap->next_id; - l2cap->next_id = l2cap->next_id == 255 ? 1 : l2cap->next_id + 1; - } else { - /* TODO: Need to re-send the same response, without re-executing - * the corresponding command! */ - } - - switch (code) { - case L2CAP_COMMAND_REJ: - if (unlikely(len != 2 && len != 4 && len != 6)) { - err = L2CAP_REJ_CMD_NOT_UNDERSTOOD; - goto reject; - } - - /* We never issue commands other than Command Reject currently. */ - error_report("%s: stray Command Reject (%02x, %04x) " - "packet, ignoring.", __func__, id, - le16_to_cpu(((l2cap_cmd_rej *) params)->reason)); - break; - - case L2CAP_CONN_REQ: - if (unlikely(len != L2CAP_CONN_REQ_SIZE)) { - err = L2CAP_REJ_CMD_NOT_UNDERSTOOD; - goto reject; - } - - l2cap_channel_open_req_msg(l2cap, - le16_to_cpu(((l2cap_conn_req *) params)->psm), - le16_to_cpu(((l2cap_conn_req *) params)->scid)); - break; - - case L2CAP_CONN_RSP: - if (unlikely(len != L2CAP_CONN_RSP_SIZE)) { - err = L2CAP_REJ_CMD_NOT_UNDERSTOOD; - goto reject; - } - - /* We never issue Connection Requests currently. TODO */ - error_report("%s: unexpected Connection Response (%02x) " - "packet, ignoring.", __func__, id); - break; - - case L2CAP_CONF_REQ: - if (unlikely(len < L2CAP_CONF_REQ_SIZE(0))) { - err = L2CAP_REJ_CMD_NOT_UNDERSTOOD; - goto reject; - } - - l2cap_channel_config_req_msg(l2cap, - le16_to_cpu(((l2cap_conf_req *) params)->flags) & 1, - le16_to_cpu(((l2cap_conf_req *) params)->dcid), - ((l2cap_conf_req *) params)->data, - len - L2CAP_CONF_REQ_SIZE(0)); - break; - - case L2CAP_CONF_RSP: - if (unlikely(len < L2CAP_CONF_RSP_SIZE(0))) { - err = L2CAP_REJ_CMD_NOT_UNDERSTOOD; - goto reject; - } - - if (l2cap_channel_config_rsp_msg(l2cap, - le16_to_cpu(((l2cap_conf_rsp *) params)->result), - le16_to_cpu(((l2cap_conf_rsp *) params)->flags) & 1, - le16_to_cpu(((l2cap_conf_rsp *) params)->scid), - ((l2cap_conf_rsp *) params)->data, - len - L2CAP_CONF_RSP_SIZE(0))) - error_report("%s: unexpected Configure Response (%02x) " - "packet, ignoring.", __func__, id); - break; - - case L2CAP_DISCONN_REQ: - if (unlikely(len != L2CAP_DISCONN_REQ_SIZE)) { - err = L2CAP_REJ_CMD_NOT_UNDERSTOOD; - goto reject; - } - - l2cap_channel_close(l2cap, - le16_to_cpu(((l2cap_disconn_req *) params)->dcid), - le16_to_cpu(((l2cap_disconn_req *) params)->scid)); - break; - - case L2CAP_DISCONN_RSP: - if (unlikely(len != L2CAP_DISCONN_RSP_SIZE)) { - err = L2CAP_REJ_CMD_NOT_UNDERSTOOD; - goto reject; - } - - /* We never issue Disconnection Requests currently. TODO */ - error_report("%s: unexpected Disconnection Response (%02x) " - "packet, ignoring.", __func__, id); - break; - - case L2CAP_ECHO_REQ: - l2cap_echo_response(l2cap, params, len); - break; - - case L2CAP_ECHO_RSP: - /* We never issue Echo Requests currently. TODO */ - error_report("%s: unexpected Echo Response (%02x) " - "packet, ignoring.", __func__, id); - break; - - case L2CAP_INFO_REQ: - if (unlikely(len != L2CAP_INFO_REQ_SIZE)) { - err = L2CAP_REJ_CMD_NOT_UNDERSTOOD; - goto reject; - } - - l2cap_info(l2cap, le16_to_cpu(((l2cap_info_req *) params)->type)); - break; - - case L2CAP_INFO_RSP: - if (unlikely(len != L2CAP_INFO_RSP_SIZE)) { - err = L2CAP_REJ_CMD_NOT_UNDERSTOOD; - goto reject; - } - - /* We never issue Information Requests currently. TODO */ - error_report("%s: unexpected Information Response (%02x) " - "packet, ignoring.", __func__, id); - break; - - default: - err = L2CAP_REJ_CMD_NOT_UNDERSTOOD; - reject: - l2cap_command_reject(l2cap, id, err, 0, 0); - break; - } -} - -static void l2cap_rexmit_enable(struct l2cap_chan_s *ch, int enable) -{ - ch->rexmit = enable; - - l2cap_retransmission_timer_update(ch); - l2cap_monitor_timer_update(ch); -} - -/* Command frame SDU */ -static void l2cap_cframe_in(void *opaque, const uint8_t *data, int len) -{ - struct l2cap_instance_s *l2cap = opaque; - const l2cap_cmd_hdr *hdr; - int clen; - - while (len) { - hdr = (void *) data; - if (len < L2CAP_CMD_HDR_SIZE) - /* TODO: signal an error */ - return; - len -= L2CAP_CMD_HDR_SIZE; - data += L2CAP_CMD_HDR_SIZE; - - clen = le16_to_cpu(hdr->len); - if (len < clen) { - l2cap_command_reject(l2cap, hdr->ident, - L2CAP_REJ_CMD_NOT_UNDERSTOOD, 0, 0); - break; - } - - l2cap_command(l2cap, hdr->code, hdr->ident, data, clen); - len -= clen; - data += clen; - } -} - -/* Group frame SDU */ -static void l2cap_gframe_in(void *opaque, const uint8_t *data, int len) -{ -} - -/* Supervisory frame */ -static void l2cap_sframe_in(struct l2cap_chan_s *ch, uint16_t ctrl) -{ -} - -/* Basic L2CAP mode Information frame */ -static void l2cap_bframe_in(struct l2cap_chan_s *ch, uint16_t cid, - const l2cap_hdr *hdr, int len) -{ - /* We have a full SDU, no further processing */ - ch->params.sdu_in(ch->params.opaque, hdr->data, len); -} - -/* Flow Control and Retransmission mode frame */ -static void l2cap_iframe_in(struct l2cap_chan_s *ch, uint16_t cid, - const l2cap_hdr *hdr, int len) -{ - uint16_t fcs = lduw_le_p(hdr->data + len - 2); - - if (len < 4) - goto len_error; - if (l2cap_fcs16((const uint8_t *) hdr, L2CAP_HDR_SIZE + len - 2) != fcs) - goto fcs_error; - - if ((hdr->data[0] >> 7) == ch->rexmit) - l2cap_rexmit_enable(ch, !(hdr->data[0] >> 7)); - - if (hdr->data[0] & 1) { - if (len != 4) { - /* TODO: Signal an error? */ - return; - } - l2cap_sframe_in(ch, lduw_le_p(hdr->data)); - return; - } - - switch (hdr->data[1] >> 6) { /* SAR */ - case L2CAP_SAR_NO_SEG: - if (ch->len_total) - goto seg_error; - if (len - 4 > ch->mps) - goto len_error; - - ch->params.sdu_in(ch->params.opaque, hdr->data + 2, len - 4); - break; - - case L2CAP_SAR_START: - if (ch->len_total || len < 6) - goto seg_error; - if (len - 6 > ch->mps) - goto len_error; - - ch->len_total = lduw_le_p(hdr->data + 2); - if (len >= 6 + ch->len_total) - goto seg_error; - - ch->len_cur = len - 6; - memcpy(ch->sdu, hdr->data + 4, ch->len_cur); - break; - - case L2CAP_SAR_END: - if (!ch->len_total || ch->len_cur + len - 4 < ch->len_total) - goto seg_error; - if (len - 4 > ch->mps) - goto len_error; - - memcpy(ch->sdu + ch->len_cur, hdr->data + 2, len - 4); - ch->params.sdu_in(ch->params.opaque, ch->sdu, ch->len_total); - break; - - case L2CAP_SAR_CONT: - if (!ch->len_total || ch->len_cur + len - 4 >= ch->len_total) - goto seg_error; - if (len - 4 > ch->mps) - goto len_error; - - memcpy(ch->sdu + ch->len_cur, hdr->data + 2, len - 4); - ch->len_cur += len - 4; - break; - - seg_error: - len_error: /* TODO */ - fcs_error: /* TODO */ - ch->len_cur = 0; - ch->len_total = 0; - break; - } -} - -static void l2cap_frame_in(struct l2cap_instance_s *l2cap, - const l2cap_hdr *frame) -{ - uint16_t cid = le16_to_cpu(frame->cid); - uint16_t len = le16_to_cpu(frame->len); - - if (unlikely(cid >= L2CAP_CID_MAX || !l2cap->cid[cid])) { - error_report("%s: frame addressed to a non-existent L2CAP " - "channel %04x received.", __func__, cid); - return; - } - - l2cap->cid[cid]->frame_in(l2cap->cid[cid], cid, frame, len); -} - -/* "Recombination" */ -static void l2cap_pdu_in(struct l2cap_instance_s *l2cap, - const uint8_t *data, int len) -{ - const l2cap_hdr *hdr = (void *) l2cap->frame_in; - - if (unlikely(len + l2cap->frame_in_len > sizeof(l2cap->frame_in))) { - if (l2cap->frame_in_len < sizeof(l2cap->frame_in)) { - memcpy(l2cap->frame_in + l2cap->frame_in_len, data, - sizeof(l2cap->frame_in) - l2cap->frame_in_len); - l2cap->frame_in_len = sizeof(l2cap->frame_in); - /* TODO: truncate */ - l2cap_frame_in(l2cap, hdr); - } - - return; - } - - memcpy(l2cap->frame_in + l2cap->frame_in_len, data, len); - l2cap->frame_in_len += len; - - if (len >= L2CAP_HDR_SIZE) - if (len >= L2CAP_HDR_SIZE + le16_to_cpu(hdr->len)) - l2cap_frame_in(l2cap, hdr); - /* There is never a start of a new PDU in the same ACL packet, so - * no need to memmove the remaining payload and loop. */ -} - -static inline uint8_t *l2cap_pdu_out(struct l2cap_instance_s *l2cap, - uint16_t cid, uint16_t len) -{ - l2cap_hdr *hdr = (void *) l2cap->frame_out; - - l2cap->frame_out_len = len + L2CAP_HDR_SIZE; - - hdr->cid = cpu_to_le16(cid); - hdr->len = cpu_to_le16(len); - - return l2cap->frame_out + L2CAP_HDR_SIZE; -} - -static inline void l2cap_pdu_submit(struct l2cap_instance_s *l2cap) -{ - /* TODO: Fragmentation */ - (l2cap->role ? - l2cap->link->slave->lmp_acl_data : l2cap->link->host->lmp_acl_resp) - (l2cap->link, l2cap->frame_out, 1, l2cap->frame_out_len); -} - -static uint8_t *l2cap_bframe_out(struct bt_l2cap_conn_params_s *parm, int len) -{ - struct l2cap_chan_s *chan = (struct l2cap_chan_s *) parm; - - if (len > chan->params.remote_mtu) { - error_report("%s: B-Frame for CID %04x longer than %i octets.", - __func__, - chan->remote_cid, chan->params.remote_mtu); - exit(-1); - } - - return l2cap_pdu_out(chan->l2cap, chan->remote_cid, len); -} - -static void l2cap_bframe_submit(struct bt_l2cap_conn_params_s *parms) -{ - struct l2cap_chan_s *chan = (struct l2cap_chan_s *) parms; - - l2cap_pdu_submit(chan->l2cap); -} - -#if 0 -/* Stub: Only used if an emulated device requests outgoing flow control */ -static uint8_t *l2cap_iframe_out(struct bt_l2cap_conn_params_s *parm, int len) -{ - struct l2cap_chan_s *chan = (struct l2cap_chan_s *) parm; - - if (len > chan->params.remote_mtu) { - /* TODO: slice into segments and queue each segment as a separate - * I-Frame in a FIFO of I-Frames, local to the CID. */ - } else { - /* TODO: add to the FIFO of I-Frames, local to the CID. */ - /* Possibly we need to return a pointer to a contiguous buffer - * for now and then memcpy from it into FIFOs in l2cap_iframe_submit - * while segmenting at the same time. */ - } - return 0; -} - -static void l2cap_iframe_submit(struct bt_l2cap_conn_params_s *parm) -{ - /* TODO: If flow control indicates clear to send, start submitting the - * invidual I-Frames from the FIFO, but don't remove them from there. - * Kick the appropriate timer until we get an S-Frame, and only then - * remove from FIFO or resubmit and re-kick the timer if the timer - * expired. */ -} -#endif - -static void l2cap_init(struct l2cap_instance_s *l2cap, - struct bt_link_s *link, int role) -{ - l2cap->link = link; - l2cap->role = role; - l2cap->dev = (struct bt_l2cap_device_s *) - (role ? link->host : link->slave); - - l2cap->next_id = 1; - - /* Establish the signalling channel */ - l2cap->signalling_ch.params.sdu_in = l2cap_cframe_in; - l2cap->signalling_ch.params.sdu_out = l2cap_bframe_out; - l2cap->signalling_ch.params.sdu_submit = l2cap_bframe_submit; - l2cap->signalling_ch.params.opaque = l2cap; - l2cap->signalling_ch.params.remote_mtu = 48; - l2cap->signalling_ch.remote_cid = L2CAP_CID_SIGNALLING; - l2cap->signalling_ch.frame_in = l2cap_bframe_in; - l2cap->signalling_ch.mps = 65536; - l2cap->signalling_ch.min_mtu = 48; - l2cap->signalling_ch.mode = L2CAP_MODE_BASIC; - l2cap->signalling_ch.l2cap = l2cap; - l2cap->cid[L2CAP_CID_SIGNALLING] = &l2cap->signalling_ch; - - /* Establish the connection-less data channel */ - l2cap->group_ch.params.sdu_in = l2cap_gframe_in; - l2cap->group_ch.params.opaque = l2cap; - l2cap->group_ch.frame_in = l2cap_bframe_in; - l2cap->group_ch.mps = 65533; - l2cap->group_ch.l2cap = l2cap; - l2cap->group_ch.remote_cid = L2CAP_CID_INVALID; - l2cap->cid[L2CAP_CID_GROUP] = &l2cap->group_ch; -} - -static void l2cap_teardown(struct l2cap_instance_s *l2cap, int send_disconnect) -{ - int cid; - - /* Don't send DISCONNECT if we are currently handling a DISCONNECT - * sent from the other side. */ - if (send_disconnect) { - if (l2cap->role) - l2cap->dev->device.lmp_disconnect_slave(l2cap->link); - /* l2cap->link is invalid from now on. */ - else - l2cap->dev->device.lmp_disconnect_master(l2cap->link); - } - - for (cid = L2CAP_CID_ALLOC; cid < L2CAP_CID_MAX; cid ++) - if (l2cap->cid[cid]) { - l2cap->cid[cid]->params.close(l2cap->cid[cid]->params.opaque); - g_free(l2cap->cid[cid]); - } - - if (l2cap->role) - g_free(l2cap); - else - g_free(l2cap->link); -} - -/* L2CAP glue to lower layers in bluetooth stack (LMP) */ - -static void l2cap_lmp_connection_request(struct bt_link_s *link) -{ - struct bt_l2cap_device_s *dev = (struct bt_l2cap_device_s *) link->slave; - struct slave_l2cap_instance_s *l2cap; - - /* Always accept - we only get called if (dev->device->page_scan). */ - - l2cap = g_malloc0(sizeof(struct slave_l2cap_instance_s)); - l2cap->link.slave = &dev->device; - l2cap->link.host = link->host; - l2cap_init(&l2cap->l2cap, &l2cap->link, 0); - - /* Always at the end */ - link->host->reject_reason = 0; - link->host->lmp_connection_complete(&l2cap->link); -} - -/* Stub */ -static void l2cap_lmp_connection_complete(struct bt_link_s *link) -{ - struct bt_l2cap_device_s *dev = (struct bt_l2cap_device_s *) link->host; - struct l2cap_instance_s *l2cap; - - if (dev->device.reject_reason) { - /* Signal to upper layer */ - return; - } - - l2cap = g_malloc0(sizeof(struct l2cap_instance_s)); - l2cap_init(l2cap, link, 1); - - link->acl_mode = acl_active; - - /* Signal to upper layer */ -} - -/* Stub */ -static void l2cap_lmp_disconnect_host(struct bt_link_s *link) -{ - struct bt_l2cap_device_s *dev = (struct bt_l2cap_device_s *) link->host; - struct l2cap_instance_s *l2cap = - /* TODO: Retrieve from upper layer */ (void *) dev; - - /* Signal to upper layer */ - - l2cap_teardown(l2cap, 0); -} - -static void l2cap_lmp_disconnect_slave(struct bt_link_s *link) -{ - struct slave_l2cap_instance_s *l2cap = - (struct slave_l2cap_instance_s *) link; - - l2cap_teardown(&l2cap->l2cap, 0); -} - -static void l2cap_lmp_acl_data_slave(struct bt_link_s *link, - const uint8_t *data, int start, int len) -{ - struct slave_l2cap_instance_s *l2cap = - (struct slave_l2cap_instance_s *) link; - - if (start) - l2cap->l2cap.frame_in_len = 0; - - l2cap_pdu_in(&l2cap->l2cap, data, len); -} - -/* Stub */ -static void l2cap_lmp_acl_data_host(struct bt_link_s *link, - const uint8_t *data, int start, int len) -{ - struct bt_l2cap_device_s *dev = (struct bt_l2cap_device_s *) link->host; - struct l2cap_instance_s *l2cap = - /* TODO: Retrieve from upper layer */ (void *) dev; - - if (start) - l2cap->frame_in_len = 0; - - l2cap_pdu_in(l2cap, data, len); -} - -static void l2cap_dummy_destroy(struct bt_device_s *dev) -{ - struct bt_l2cap_device_s *l2cap_dev = (struct bt_l2cap_device_s *) dev; - - bt_l2cap_device_done(l2cap_dev); -} - -void bt_l2cap_device_init(struct bt_l2cap_device_s *dev, - struct bt_scatternet_s *net) -{ - bt_device_init(&dev->device, net); - - dev->device.lmp_connection_request = l2cap_lmp_connection_request; - dev->device.lmp_connection_complete = l2cap_lmp_connection_complete; - dev->device.lmp_disconnect_master = l2cap_lmp_disconnect_host; - dev->device.lmp_disconnect_slave = l2cap_lmp_disconnect_slave; - dev->device.lmp_acl_data = l2cap_lmp_acl_data_slave; - dev->device.lmp_acl_resp = l2cap_lmp_acl_data_host; - - dev->device.handle_destroy = l2cap_dummy_destroy; -} - -void bt_l2cap_device_done(struct bt_l2cap_device_s *dev) -{ - bt_device_done(&dev->device); - - /* Should keep a list of all instances and go through it and - * invoke l2cap_teardown() for each. */ -} - -void bt_l2cap_psm_register(struct bt_l2cap_device_s *dev, int psm, int min_mtu, - int (*new_channel)(struct bt_l2cap_device_s *dev, - struct bt_l2cap_conn_params_s *params)) -{ - struct bt_l2cap_psm_s *new_psm = l2cap_psm(dev, psm); - - if (new_psm) { - error_report("%s: PSM %04x already registered for device `%s'.", - __func__, psm, dev->device.lmp_name); - exit(-1); - } - - new_psm = g_malloc0(sizeof(*new_psm)); - new_psm->psm = psm; - new_psm->min_mtu = min_mtu; - new_psm->new_channel = new_channel; - new_psm->next = dev->first_psm; - dev->first_psm = new_psm; -} |