/****************************************************************************** QTI_PPP.C ******************************************************************************/ /****************************************************************************** @file qti_ppp.c @brief Qualcomm Tethering Interface Module for DUN connections. DESCRIPTION Implementation of Qualcomm Tethering Interface. --------------------------------------------------------------------------- Copyright (c) 2014 Qualcomm Technologies, Inc. All Rights Reserved. Qualcomm Technologies Proprietary and Confidential. --------------------------------------------------------------------------- ******************************************************************************/ /****************************************************************************** EDIT HISTORY FOR FILE $Id:$ when who what, where, why -------- --- ------------------------------------------------------- 02/19/14 cp Initial version ******************************************************************************/ /*=========================================================================== INCLUDE FILES ===========================================================================*/ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "qti_ppp.h" /*=========================================================================== VARIABLE DECLARATIONS ===========================================================================*/ static qti_ppp_conf_t qti_ppp_conf; qcmap_sk_fd_set_info_t sk_fdset; qti_usb_tty_config usb_tty_config_info; qti_usb_line_state_config usb_line_state_config_info; qti_smd_tty_config smd_tty_config_info; qcmap_sk_info_t sk_info; /*=========================================================================== FUNCTION DEFINITIONS ===========================================================================*/ /*=========================================================================== FUNCTION IsDUNSoftAPMode ==========================================================================*/ /*! @brief Checks if we are in DUN+SoftAP Mode or not. @parameters None. @return true - If we are in DUN+SoftAP mode. flase - if we are not in DUN+SoftAP mode. @note - Dependencies - None - Side Effects - None */ /*=========================================================================*/ static boolean IsDunSoftAPMode(void) { int i = 0; FILE *cmd = NULL; char mode = 0; const char process[] = "cat /data/usb/softap_w_dun"; cmd = popen(process, "r"); if(cmd) mode = fgetc(cmd); if ( mode == 'Y' ) { LOG_MSG_INFO1("In DUN+SoftAP mode.", 0, 0, 0); return TRUE; } else { LOG_MSG_ERROR(" Not in DUN+SoftAP mode.", 0, 0, 0); return FALSE; } } /*=========================================================================== FUNCTION QTI_PPP_CLEAR_FD() DESCRIPTION This function - Removes the fd to the list of FD on which select call listens. DEPENDENCIES None. RETURN VALUE SIDE EFFECTS None /*=========================================================================*/ int qti_ppp_clear_fd ( qcmap_sk_fd_set_info_t *fd_set, int fd ) { int i=0, j=0; /*-------------------------------------------------------------------------- Remove fd to fdmap array. -------------------------------------------------------------------------- */ for ( i = 0; i < fd_set->num_fd; i++ ) { if ( fd_set->sk_fds[i].sk_fd == fd ) break; } if ( i == fd_set->num_fd ) { LOG_MSG_ERROR("Something wrong FD %d not found", fd, 0, 0); return QTI_PPP_FAILURE; } /* Clear the fd. */ for ( j = i; j < ( fd_set->num_fd - 1); j++ ) { fd_set->sk_fds[j].sk_fd = fd_set->sk_fds[j+1].sk_fd; fd_set->sk_fds[j].read_func = fd_set->sk_fds[j+1].read_func; } fd_set->sk_fds[fd_set->num_fd - 1].sk_fd = 0; fd_set->sk_fds[fd_set->num_fd - 1].read_func = NULL; fd_set->num_fd--; /*-------------------------------------------------------------------------- Re-calculate max_fd --------------------------------------------------------------------------*/ fd_set->max_fd = 0; for ( i = 0; i < fd_set->num_fd; i++ ) { if ( fd_set->max_fd < fd_set->sk_fds[i].sk_fd ) fd_set->max_fd = fd_set->sk_fds[i].sk_fd; } return QTI_PPP_SUCCESS; } /*========================================================================== FUNCTION MAIN() DESCRIPTION The main function for QTI which is first called when QTI gets started on boot up. DEPENDENCIES None. RETURN VALUE 0 on SUCCESS -1 on FAILURE SIDE EFFECTS None ==========================================================================*/ int main(int argc, char ** argv) { int retval = QTI_PPP_SUCCESS; /*------------------------------------------------------------------------*/ /* Initializing Diag for QXDM loga*/ if (TRUE != Diag_LSM_Init(NULL)) { LOG_MSG_ERROR("Diag_LSM_Init failed !!", 0, 0, 0); } /* Check if we are in DUN+SoftAP mode or not. */ if ( !IsDunSoftAPMode() ) { exit(0); } LOG_MSG_INFO1("Start QTI PPP", 0, 0, 0); /*----------------------------------------------------------------------- Initialize QTI variables ------------------------------------------------------------------------*/ memset(&sk_fdset, 0, sizeof(qcmap_sk_fd_set_info_t)); memset(&usb_tty_config_info, 0, sizeof(qti_usb_tty_config)); memset(&smd_tty_config_info, 0, sizeof(qti_smd_tty_config)); /*----------------------------------------------------------------------- Initialize QTI_PPP to be a client of QCMAP ------------------------------------------------------------------------*/ retval = qti_ppp_qcmap_init(&qti_ppp_conf); if(retval != QTI_PPP_SUCCESS) { LOG_MSG_ERROR("QTI %d: Failed to initialize QTI as a QCMAP client", 0, 0, 0); return QTI_PPP_FAILURE; } /*--------------------------------------------------------------------- Call into the netlink listener init function which sets up QTI to listen to netlink events ---------------------------------------------------------------------*/ if (qcmap_nl_listener_init( NETLINK_ROUTE, RTMGRP_LINK, &sk_fdset, qti_ppp_nl_recv_msg, &sk_info, MAX_NUM_OF_FD) == QCMAP_UTIL_SUCCESS) { LOG_MSG_INFO1("Open netlink socket succeeds",0,0,0); } else { LOG_MSG_ERROR("Netlink socket open failed",0,0,0); return QTI_PPP_FAILURE; } /*--------------------------------------------------------------------- Call into the USB TTY listener init function which sets up QTI to listen to AT Commands coming in from the USB device file for DUN ---------------------------------------------------------------------*/ retval = qti_usb_tty_listener_init(&usb_tty_config_info, &sk_fdset, qti_usb_tty_recv_msg); if(retval != QTI_PPP_SUCCESS) { LOG_MSG_ERROR("Failed to initialize QTI USB TTY listener.", 0, 0, 0); } /*--------------------------------------------------------------------- Create a Notifier fd on the DUN TTY connected status flag. ---------------------------------------------------------------------*/ retval = qti_usb_line_state_init(&usb_line_state_config_info, &sk_fdset, qti_usb_line_state_recv_msg); if(retval != QTI_PPP_SUCCESS) { LOG_MSG_ERROR("Failed to initialize QTI USB TTY Notifier.", 0, 0, 0); return QTI_PPP_FAILURE; } /*--------------------------------------------------------------------- Call into the SMD TTY listener init function which sets up QTI to listen to AT Commands coming in from the Modem for DUN ---------------------------------------------------------------------*/ retval = qti_smd_tty_listener_init(&smd_tty_config_info, &sk_fdset, qti_smd_tty_recv_msg); if(retval != QTI_PPP_SUCCESS) { LOG_MSG_ERROR("Failed to initialize QTI SMD TTY listener",0,0,0); return QTI_PPP_FAILURE; } /*-------------------------------------------------------------------- Start the listener which listens to netlink events and AT commands. ---------------------------------------------------------------------*/ retval = qcmap_listener_start(&sk_fdset); if(retval != QCMAP_UTIL_SUCCESS) { LOG_MSG_ERROR("QTI PPP:Failed to start NL listener", 0, 0, 0); } qti_ppp_qcmap_exit(); return QTI_PPP_SUCCESS; }