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Diffstat (limited to 'net/caif/cfsrvl.c')
-rw-r--r--net/caif/cfsrvl.c87
1 files changed, 58 insertions, 29 deletions
diff --git a/net/caif/cfsrvl.c b/net/caif/cfsrvl.c
index aff31f34528..a6e11546305 100644
--- a/net/caif/cfsrvl.c
+++ b/net/caif/cfsrvl.c
@@ -1,16 +1,21 @@
/*
* Copyright (C) ST-Ericsson AB 2010
- * Author: Sjur Brendeland/sjur.brandeland@stericsson.com
+ * Author: Sjur Brendeland
* License terms: GNU General Public License (GPL) version 2
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ":%s(): " fmt, __func__
+
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/pkt_sched.h>
#include <net/caif/caif_layer.h>
#include <net/caif/cfsrvl.h>
#include <net/caif/cfpkt.h>
+#include <net/caif/caif_dev.h>
#define SRVL_CTRL_PKT_SIZE 1
#define SRVL_FLOW_OFF 0x81
@@ -21,11 +26,13 @@
#define container_obj(layr) container_of(layr, struct cfsrvl, layer)
static void cfservl_ctrlcmd(struct cflayer *layr, enum caif_ctrlcmd ctrl,
- int phyid)
+ int phyid)
{
struct cfsrvl *service = container_obj(layr);
- caif_assert(layr->up != NULL);
- caif_assert(layr->up->ctrlcmd != NULL);
+
+ if (layr->up == NULL || layr->up->ctrlcmd == NULL)
+ return;
+
switch (ctrl) {
case CAIF_CTRLCMD_INIT_RSP:
service->open = true;
@@ -77,8 +84,7 @@ static void cfservl_ctrlcmd(struct cflayer *layr, enum caif_ctrlcmd ctrl,
layr->up->ctrlcmd(layr->up, ctrl, phyid);
break;
default:
- pr_warning("CAIF: %s(): "
- "Unexpected ctrl in cfsrvl (%d)\n", __func__, ctrl);
+ 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;
@@ -89,9 +95,14 @@ static void cfservl_ctrlcmd(struct cflayer *layr, enum caif_ctrlcmd ctrl,
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:
{
@@ -99,15 +110,11 @@ static int cfservl_modemcmd(struct cflayer *layr, enum caif_modemcmd ctrl)
struct caif_payload_info *info;
u8 flow_on = SRVL_FLOW_ON;
pkt = cfpkt_create(SRVL_CTRL_PKT_SIZE);
- if (!pkt) {
- pr_warning("CAIF: %s(): Out of memory\n",
- __func__);
+ if (!pkt)
return -ENOMEM;
- }
if (cfpkt_add_head(pkt, &flow_on, 1) < 0) {
- pr_err("CAIF: %s(): Packet is erroneous!\n",
- __func__);
+ pr_err("Packet is erroneous!\n");
cfpkt_destroy(pkt);
return -EPROTO;
}
@@ -115,6 +122,7 @@ static int cfservl_modemcmd(struct cflayer *layr, enum caif_modemcmd ctrl)
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:
@@ -123,9 +131,11 @@ static int cfservl_modemcmd(struct cflayer *layr, enum caif_modemcmd ctrl)
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("CAIF: %s(): Packet is erroneous!\n",
- __func__);
+ pr_err("Packet is erroneous!\n");
cfpkt_destroy(pkt);
return -EPROTO;
}
@@ -133,6 +143,7 @@ static int cfservl_modemcmd(struct cflayer *layr, enum caif_modemcmd ctrl)
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:
@@ -141,14 +152,16 @@ static int cfservl_modemcmd(struct cflayer *layr, enum caif_modemcmd ctrl)
return -EINVAL;
}
-void cfservl_destroy(struct cflayer *layer)
+static void cfsrvl_release(struct cflayer *layer)
{
- kfree(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)
+ struct dev_info *dev_info,
+ bool supports_flowctrl)
{
caif_assert(offsetof(struct cfsrvl, layer) == 0);
service->open = false;
@@ -158,27 +171,19 @@ void cfsrvl_init(struct cfsrvl *service,
service->layer.ctrlcmd = cfservl_ctrlcmd;
service->layer.modemcmd = cfservl_modemcmd;
service->dev_info = *dev_info;
- kref_init(&service->ref);
-}
-
-void cfsrvl_release(struct kref *kref)
-{
- struct cfsrvl *service = container_of(kref, struct cfsrvl, ref);
- kfree(service);
+ service->supports_flowctrl = supports_flowctrl;
+ service->release = cfsrvl_release;
}
bool cfsrvl_ready(struct cfsrvl *service, int *err)
{
- if (service->open && service->modem_flow_on && service->phy_flow_on)
- return true;
if (!service->open) {
*err = -ENOTCONN;
return false;
}
- caif_assert(!(service->modem_flow_on && service->phy_flow_on));
- *err = -EAGAIN;
- return false;
+ return true;
}
+
u8 cfsrvl_getphyid(struct cflayer *layer)
{
struct cfsrvl *servl = container_obj(layer);
@@ -190,3 +195,27 @@ 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);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-15 23:37:01 +0000