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TODO
(1.17 KB)
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ng_l2cap_cmds.c
(11.28 KB)
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ng_l2cap_cmds.h
(13.09 KB)
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ng_l2cap_evnt.c
(37.12 KB)
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ng_l2cap_evnt.h
(1.64 KB)
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ng_l2cap_llpi.c
(26.16 KB)
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ng_l2cap_llpi.h
(2.48 KB)
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ng_l2cap_main.c
(19.53 KB)
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ng_l2cap_misc.c
(16.67 KB)
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ng_l2cap_misc.h
(3.55 KB)
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ng_l2cap_prse.h
(2.59 KB)
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ng_l2cap_ulpi.c
(46.5 KB)
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ng_l2cap_ulpi.h
(3.51 KB)
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ng_l2cap_var.h
(6.29 KB)
Editing: ng_l2cap_cmds.c
/* * ng_l2cap_cmds.c */ /*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) Maksim Yevmenkin <m_evmenkin@yahoo.com> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $Id: ng_l2cap_cmds.c,v 1.2 2003/09/08 19:11:45 max Exp $ * $FreeBSD$ */ #include <sys/param.h> #include <sys/systm.h> #include <sys/kernel.h> #include <sys/endian.h> #include <sys/malloc.h> #include <sys/mbuf.h> #include <sys/queue.h> #include <netgraph/ng_message.h> #include <netgraph/netgraph.h> #include <netgraph/bluetooth/include/ng_bluetooth.h> #include <netgraph/bluetooth/include/ng_hci.h> #include <netgraph/bluetooth/include/ng_l2cap.h> #include <netgraph/bluetooth/l2cap/ng_l2cap_var.h> #include <netgraph/bluetooth/l2cap/ng_l2cap_cmds.h> #include <netgraph/bluetooth/l2cap/ng_l2cap_evnt.h> #include <netgraph/bluetooth/l2cap/ng_l2cap_llpi.h> #include <netgraph/bluetooth/l2cap/ng_l2cap_ulpi.h> #include <netgraph/bluetooth/l2cap/ng_l2cap_misc.h> /****************************************************************************** ****************************************************************************** ** L2CAP commands processing module ****************************************************************************** ******************************************************************************/ /* * Process L2CAP command queue on connection */ void ng_l2cap_con_wakeup(ng_l2cap_con_p con) { ng_l2cap_cmd_p cmd = NULL; struct mbuf *m = NULL; int error = 0; /* Find first non-pending command in the queue */ TAILQ_FOREACH(cmd, &con->cmd_list, next) { KASSERT((cmd->con == con), ("%s: %s - invalid connection pointer!\n", __func__, NG_NODE_NAME(con->l2cap->node))); if (!(cmd->flags & NG_L2CAP_CMD_PENDING)) break; } if (cmd == NULL) return; /* Detach command packet */ m = cmd->aux; cmd->aux = NULL; /* Process command */ switch (cmd->code) { case NG_L2CAP_DISCON_RSP: case NG_L2CAP_ECHO_RSP: case NG_L2CAP_INFO_RSP: /* * Do not check return ng_l2cap_lp_send() value, because * in these cases we do not really have a graceful way out. * ECHO and INFO responses are internal to the stack and not * visible to user. REJect is just being nice to remote end * (otherwise remote end will timeout anyway). DISCON is * probably most interesting here, however, if it fails * there is nothing we can do anyway. */ (void) ng_l2cap_lp_send(con, NG_L2CAP_SIGNAL_CID, m); ng_l2cap_unlink_cmd(cmd); ng_l2cap_free_cmd(cmd); break; case NG_L2CAP_CMD_REJ: (void) ng_l2cap_lp_send(con, (con->linktype == NG_HCI_LINK_ACL)? NG_L2CAP_SIGNAL_CID: NG_L2CAP_LESIGNAL_CID , m); ng_l2cap_unlink_cmd(cmd); ng_l2cap_free_cmd(cmd); break; case NG_L2CAP_CON_REQ: error = ng_l2cap_lp_send(con, NG_L2CAP_SIGNAL_CID, m); if (error != 0) { ng_l2cap_l2ca_con_rsp(cmd->ch, cmd->token, NG_L2CAP_NO_RESOURCES, 0); ng_l2cap_free_chan(cmd->ch); /* will free commands */ } else ng_l2cap_command_timeout(cmd, bluetooth_l2cap_rtx_timeout()); break; case NG_L2CAP_CON_RSP: error = ng_l2cap_lp_send(con, NG_L2CAP_SIGNAL_CID, m); ng_l2cap_unlink_cmd(cmd); if (cmd->ch != NULL) { ng_l2cap_l2ca_con_rsp_rsp(cmd->ch, cmd->token, (error == 0)? NG_L2CAP_SUCCESS : NG_L2CAP_NO_RESOURCES); if (error != 0) ng_l2cap_free_chan(cmd->ch); } ng_l2cap_free_cmd(cmd); break; case NG_L2CAP_CFG_REQ: error = ng_l2cap_lp_send(con, NG_L2CAP_SIGNAL_CID, m); if (error != 0) { ng_l2cap_l2ca_cfg_rsp(cmd->ch, cmd->token, NG_L2CAP_NO_RESOURCES); ng_l2cap_unlink_cmd(cmd); ng_l2cap_free_cmd(cmd); } else ng_l2cap_command_timeout(cmd, bluetooth_l2cap_rtx_timeout()); break; case NG_L2CAP_CFG_RSP: error = ng_l2cap_lp_send(con, NG_L2CAP_SIGNAL_CID, m); ng_l2cap_unlink_cmd(cmd); if (cmd->ch != NULL) ng_l2cap_l2ca_cfg_rsp_rsp(cmd->ch, cmd->token, (error == 0)? NG_L2CAP_SUCCESS : NG_L2CAP_NO_RESOURCES); ng_l2cap_free_cmd(cmd); break; case NG_L2CAP_DISCON_REQ: error = ng_l2cap_lp_send(con, NG_L2CAP_SIGNAL_CID, m); ng_l2cap_l2ca_discon_rsp(cmd->ch, cmd->token, (error == 0)? NG_L2CAP_SUCCESS : NG_L2CAP_NO_RESOURCES); if (error != 0) ng_l2cap_free_chan(cmd->ch); /* XXX free channel */ else ng_l2cap_command_timeout(cmd, bluetooth_l2cap_rtx_timeout()); break; case NG_L2CAP_ECHO_REQ: error = ng_l2cap_lp_send(con, NG_L2CAP_SIGNAL_CID, m); if (error != 0) { ng_l2cap_l2ca_ping_rsp(con, cmd->token, NG_L2CAP_NO_RESOURCES, NULL); ng_l2cap_unlink_cmd(cmd); ng_l2cap_free_cmd(cmd); } else ng_l2cap_command_timeout(cmd, bluetooth_l2cap_rtx_timeout()); break; case NG_L2CAP_INFO_REQ: error = ng_l2cap_lp_send(con, NG_L2CAP_SIGNAL_CID, m); if (error != 0) { ng_l2cap_l2ca_get_info_rsp(con, cmd->token, NG_L2CAP_NO_RESOURCES, NULL); ng_l2cap_unlink_cmd(cmd); ng_l2cap_free_cmd(cmd); } else ng_l2cap_command_timeout(cmd, bluetooth_l2cap_rtx_timeout()); break; case NGM_L2CAP_L2CA_WRITE: { int length = m->m_pkthdr.len; if (cmd->ch->dcid == NG_L2CAP_CLT_CID) { m = ng_l2cap_prepend(m, sizeof(ng_l2cap_clt_hdr_t)); if (m == NULL) error = ENOBUFS; else mtod(m, ng_l2cap_clt_hdr_t *)->psm = htole16(cmd->ch->psm); } if (error == 0) error = ng_l2cap_lp_send(con, cmd->ch->dcid, m); ng_l2cap_l2ca_write_rsp(cmd->ch, cmd->token, (error == 0)? NG_L2CAP_SUCCESS : NG_L2CAP_NO_RESOURCES, length); ng_l2cap_unlink_cmd(cmd); ng_l2cap_free_cmd(cmd); } break; case NG_L2CAP_CMD_PARAM_UPDATE_RESPONSE: error = ng_l2cap_lp_send(con, NG_L2CAP_LESIGNAL_CID, m); ng_l2cap_unlink_cmd(cmd); ng_l2cap_free_cmd(cmd); break; case NG_L2CAP_CMD_PARAM_UPDATE_REQUEST: /*TBD.*/ /* XXX FIXME add other commands */ default: panic( "%s: %s - unknown command code=%d\n", __func__, NG_NODE_NAME(con->l2cap->node), cmd->code); break; } } /* ng_l2cap_con_wakeup */ /* * We have failed to open ACL connection to the remote unit. Could be negative * confirmation or timeout. So fail any "delayed" commands, notify upper layer, * remove all channels and remove connection descriptor. */ void ng_l2cap_con_fail(ng_l2cap_con_p con, u_int16_t result) { ng_l2cap_p l2cap = con->l2cap; ng_l2cap_cmd_p cmd = NULL; ng_l2cap_chan_p ch = NULL; NG_L2CAP_INFO( "%s: %s - ACL connection failed, result=%d\n", __func__, NG_NODE_NAME(l2cap->node), result); /* Connection is dying */ con->flags |= NG_L2CAP_CON_DYING; /* Clean command queue */ while (!TAILQ_EMPTY(&con->cmd_list)) { cmd = TAILQ_FIRST(&con->cmd_list); ng_l2cap_unlink_cmd(cmd); if(cmd->flags & NG_L2CAP_CMD_PENDING) ng_l2cap_command_untimeout(cmd); KASSERT((cmd->con == con), ("%s: %s - invalid connection pointer!\n", __func__, NG_NODE_NAME(l2cap->node))); switch (cmd->code) { case NG_L2CAP_CMD_REJ: case NG_L2CAP_DISCON_RSP: case NG_L2CAP_ECHO_RSP: case NG_L2CAP_INFO_RSP: case NG_L2CAP_CMD_PARAM_UPDATE_RESPONSE: break; case NG_L2CAP_CON_REQ: ng_l2cap_l2ca_con_rsp(cmd->ch, cmd->token, result, 0); break; case NG_L2CAP_CON_RSP: if (cmd->ch != NULL) ng_l2cap_l2ca_con_rsp_rsp(cmd->ch, cmd->token, result); break; case NG_L2CAP_CFG_REQ: case NG_L2CAP_CFG_RSP: case NGM_L2CAP_L2CA_WRITE: ng_l2cap_l2ca_discon_ind(cmd->ch); break; case NG_L2CAP_DISCON_REQ: ng_l2cap_l2ca_discon_rsp(cmd->ch, cmd->token, NG_L2CAP_SUCCESS); break; case NG_L2CAP_ECHO_REQ: ng_l2cap_l2ca_ping_rsp(cmd->con, cmd->token, result, NULL); break; case NG_L2CAP_INFO_REQ: ng_l2cap_l2ca_get_info_rsp(cmd->con, cmd->token, result, NULL); break; /* XXX FIXME add other commands */ default: panic( "%s: %s - unexpected command code=%d\n", __func__, NG_NODE_NAME(l2cap->node), cmd->code); break; } if (cmd->ch != NULL) ng_l2cap_free_chan(cmd->ch); ng_l2cap_free_cmd(cmd); } /* * There still might be channels (in OPEN state?) that * did not submit any commands, so disconnect them */ LIST_FOREACH(ch, &l2cap->chan_list, next) if (ch->con == con) ng_l2cap_l2ca_discon_ind(ch); /* Free connection descriptor */ ng_l2cap_free_con(con); } /* ng_l2cap_con_fail */ /* * Process L2CAP command timeout. In general - notify upper layer and destroy * channel. Do not pay much attention to return code, just do our best. */ void ng_l2cap_process_command_timeout(node_p node, hook_p hook, void *arg1, int arg2) { ng_l2cap_p l2cap = NULL; ng_l2cap_con_p con = NULL; ng_l2cap_cmd_p cmd = NULL; u_int16_t con_handle = (arg2 & 0x0ffff); u_int8_t ident = ((arg2 >> 16) & 0xff); if (NG_NODE_NOT_VALID(node)) { printf("%s: Netgraph node is not valid\n", __func__); return; } l2cap = (ng_l2cap_p) NG_NODE_PRIVATE(node); con = ng_l2cap_con_by_handle(l2cap, con_handle); if (con == NULL) { NG_L2CAP_ALERT( "%s: %s - could not find connection, con_handle=%d\n", __func__, NG_NODE_NAME(node), con_handle); return; } cmd = ng_l2cap_cmd_by_ident(con, ident); if (cmd == NULL) { NG_L2CAP_ALERT( "%s: %s - could not find command, con_handle=%d, ident=%d\n", __func__, NG_NODE_NAME(node), con_handle, ident); return; } cmd->flags &= ~NG_L2CAP_CMD_PENDING; ng_l2cap_unlink_cmd(cmd); switch (cmd->code) { case NG_L2CAP_CON_REQ: ng_l2cap_l2ca_con_rsp(cmd->ch, cmd->token, NG_L2CAP_TIMEOUT, 0); ng_l2cap_free_chan(cmd->ch); break; case NG_L2CAP_CFG_REQ: ng_l2cap_l2ca_cfg_rsp(cmd->ch, cmd->token, NG_L2CAP_TIMEOUT); break; case NG_L2CAP_DISCON_REQ: ng_l2cap_l2ca_discon_rsp(cmd->ch, cmd->token, NG_L2CAP_TIMEOUT); ng_l2cap_free_chan(cmd->ch); /* XXX free channel */ break; case NG_L2CAP_ECHO_REQ: /* Echo request timed out. Let the upper layer know */ ng_l2cap_l2ca_ping_rsp(cmd->con, cmd->token, NG_L2CAP_TIMEOUT, NULL); break; case NG_L2CAP_INFO_REQ: /* Info request timed out. Let the upper layer know */ ng_l2cap_l2ca_get_info_rsp(cmd->con, cmd->token, NG_L2CAP_TIMEOUT, NULL); break; /* XXX FIXME add other commands */ default: panic( "%s: %s - unexpected command code=%d\n", __func__, NG_NODE_NAME(l2cap->node), cmd->code); break; } ng_l2cap_free_cmd(cmd); } /* ng_l2cap_process_command_timeout */
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