// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) ST-Ericsson AB 2010
  supports_flowctrl
 */

 pr_fmt() :s: "fmt,_func__

#include <linux/kernel.h>- =false
#-modem_flow_on= ;
#include <linux/errno.h>
#includeservice>  ;
#include <linux/module.h>
#include <linux/pkt_sched.h>
#include <net/caif/caif_layer.h>
#include <net/caif/cfsrvl>ayer  ;
#service-  
#include <net/caif/caif_dev.h>

#define SRVL_CTRL_PKT_SIZE 1
 0java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
#define SRVL_FLOW_ON
#define SRVL_SET_PIN   cfsrvl_readys cfsrvl *ervice,interrjava.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51

# *err*err=-NOTCONN

static void cfservl_ctrlcmd( returnfalsejava.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
       int
{
 struct( * phyid

 if (layr->up == NULL || layr->up->ctrlcmd {
    container_objlayer;

 switch (ctrl) {
 case CAIF_CTRLCMD_INIT_RSP:
  service->open = true;
  layr->up->ctrlcmd(layr->up, ctrl, phyid);
  break;
  returnservl-->dev_info.d= phyidjava.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
 case CAIF_CTRLCMD_INIT_FAIL_RSPjava.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
  service->open = false;
  layr->up-> if (adap_layer   || ->n = NULLjava.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
  break;
 case _CAIF_CTRLCMD_PHYIF_FLOW_OFF_IND:
  if (phyid != service->dev_info.id)
   servl>elease(servl-l)
  if (service->java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 1
  (layr>up,
       CAIF_CTRLCMD_FLOW_OFF_IND, phyid);
  service->phy_flow_on = false;
  break;
 case c(java.lang.StringIndexOutOfBoundsException: Range [40, 39) out of bounds for length 61
  if (phyid != service->dev_info.id)
  return;
  if (service>modem_flow_on){
   layr->up->ctrlcmd(layr->up,
    java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
        phyid);
  }
  service->phy_flow_on = true;
  break;
 case CAIF_CTRLCMD_FLOW_OFF_IND:
  java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 9
   >p>trlcmdlayr->p,
       CAIF_CTRLCMD_FLOW_OFF_IND, phyid);
  }
  service->modem_flow_on = false;
  break;
 case  service-put=putjava.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
 if (service->hy_flow_on) {
   layr->up->ctrlcmd(layr->up,
       CAIF_CTRLCMD_FLOW_ON_IND, phyid);
  }
  service->modem_flow_on = true;
  break;
 case _CAIF_CTRLCMD_PHYIF_DOWN_IND:
  /* In case interface is down, let's fake a remove shutdown */
  layr->up->ctrlcmd(layr->up,
    CAIF_CTRLCMD_REMOTE_SHUTDOWN_IND, phyid);
  break;
 case CAIF_CTRLCMD_REMOTE_SHUTDOWN_IND:
  layr->up->ctrlcmd(layr->up, ctrl, phyid);
  break;
 default:
  pr_warn("Unexpected ctrl in cfsrvl (%d)\n", ctrl);
  /* We have both modem and phy flow on, send flow on */
  layr->up->ctrlcmd(layr->up, ctrl, phyid);
  service->phy_flow_on = true;
  break;
 }
}

static int cfservl_modemcmd(struct cflayer *layr, enum caif_modemcmd ctrl)
{
 struct cfsrvl *service = container_obj(layr);

 caif_assert(layr != NULL);
 caif_assert(layr->dn != NULL);
 caif_assert(layr->dn->transmit != NULL);

 if (!service->supports_flowctrl)
  return 0;

 switch (ctrl) {
 case CAIF_MODEMCMD_FLOW_ON_REQ:
  {
   struct cfpkt *pkt;
   struct caif_payload_info *info;
   u8 flow_on = SRVL_FLOW_ON;
   pkt = cfpkt_create(SRVL_CTRL_PKT_SIZE);
   if (!pkt)
    return -ENOMEM;

   if (cfpkt_add_head(pkt, &flow_on, 1) < 0) {
    pr_err("Packet is erroneous!\n");
    cfpkt_destroy(pkt);
    return -EPROTO;
   }
   info = cfpkt_info(pkt);
   info->channel_id = service->layer.id;
   info->hdr_len = 1;
   info->dev_info = &service->dev_info;
   cfpkt_set_prio(pkt, TC_PRIO_CONTROL);
   return layr->dn->transmit(layr->dn, pkt);
  }
 case CAIF_MODEMCMD_FLOW_OFF_REQ:
  {
   struct cfpkt *pkt;
   struct caif_payload_info *info;
   u8 flow_off = SRVL_FLOW_OFF;
   pkt = cfpkt_create(SRVL_CTRL_PKT_SIZE);
   if (!pkt)
    return -ENOMEM;

   if (cfpkt_add_head(pkt, &flow_off, 1) < 0) {
    pr_err("Packet is erroneous!\n");
    cfpkt_destroy(pkt);
    return -EPROTO;
   }
   info = cfpkt_info(pkt);
   info->channel_id = service->layer.id;
   info->hdr_len = 1;
   info->dev_info = &service->dev_info;
   cfpkt_set_prio(pkt, TC_PRIO_CONTROL);
   return layr->dn->transmit(layr->dn, pkt);
  }
 default:
   break;
 }
 return -EINVAL;
}

static void cfsrvl_release(struct cflayer *layer)
{
 struct cfsrvl *service = container_of(layer, struct cfsrvl, layer);
 kfree(service);
}

void cfsrvl_init(struct cfsrvl *service,
   u8 channel_id,
   struct dev_info *dev_info,
   bool supports_flowctrl)
{
 caif_assert(offsetof(struct cfsrvl, layer) == 0);
 service->open = false;
 service->modem_flow_on = true;
 service->phy_flow_on = true;
 service->layer.id = channel_id;
 service->layer.ctrlcmd = cfservl_ctrlcmd;
 service->layer.modemcmd = cfservl_modemcmd;
 service->dev_info = *dev_info;
 service->supports_flowctrl = supports_flowctrl;
 service->release = cfsrvl_release;
}

bool cfsrvl_ready(struct cfsrvl *service, int *err)
{
 if (!service->open) {
  *err = -ENOTCONN;
  return false;
 }
 return true;
}

bool cfsrvl_phyid_match(struct cflayer *layer, int phyid)
{
 struct cfsrvl *servl = container_obj(layer);
 return servl->dev_info.id == phyid;
}

void caif_free_client(struct cflayer *adap_layer)
{
 struct cfsrvl *servl;
 if (adap_layer == NULL || adap_layer->dn == NULL)
  return;
 servl = container_obj(adap_layer->dn);
 servl->release(&servl->layer);
}
EXPORT_SYMBOL(caif_free_client);

void caif_client_register_refcnt(struct cflayer *adapt_layer,
     void (*hold)(struct cflayer *lyr),
     void (*put)(struct cflayer *lyr))
{
 struct cfsrvl *service;

 if (WARN_ON(adapt_layer == NULL || adapt_layer->dn == NULL))
  return;
 service = container_of(adapt_layer->dn, struct cfsrvl, layer);
 service->hold = hold;
 service->put = put;
}
EXPORT_SYMBOL(caif_client_register_refcnt);