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@@ -0,0 +1,664 @@
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+/*
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+ * Copyright (C) ST-Ericsson AB 2010
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+ * Author: Sjur Brendeland/sjur.brandeland@stericsson.com
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+ * License terms: GNU General Public License (GPL) version 2
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+ */
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+
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+#include <linux/stddef.h>
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+#include <linux/spinlock.h>
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+#include <linux/slab.h>
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+#include <net/caif/caif_layer.h>
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+#include <net/caif/cfpkt.h>
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+#include <net/caif/cfctrl.h>
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+
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+#define container_obj(layr) container_of(layr, struct cfctrl, serv.layer)
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+#define UTILITY_NAME_LENGTH 16
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+#define CFPKT_CTRL_PKT_LEN 20
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+
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+
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+#ifdef CAIF_NO_LOOP
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+static int handle_loop(struct cfctrl *ctrl,
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+ int cmd, struct cfpkt *pkt){
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+ return CAIF_FAILURE;
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+}
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+#else
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+static int handle_loop(struct cfctrl *ctrl,
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+ int cmd, struct cfpkt *pkt);
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+#endif
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+static int cfctrl_recv(struct cflayer *layr, struct cfpkt *pkt);
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+static void cfctrl_ctrlcmd(struct cflayer *layr, enum caif_ctrlcmd ctrl,
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+ int phyid);
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+
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+
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+struct cflayer *cfctrl_create(void)
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+{
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+ struct cfctrl *this =
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+ kmalloc(sizeof(struct cfctrl), GFP_ATOMIC);
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+ if (!this) {
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+ pr_warning("CAIF: %s(): Out of memory\n", __func__);
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+ return NULL;
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+ }
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+ caif_assert(offsetof(struct cfctrl, serv.layer) == 0);
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+ memset(this, 0, sizeof(*this));
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+ spin_lock_init(&this->info_list_lock);
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+ atomic_set(&this->req_seq_no, 1);
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+ atomic_set(&this->rsp_seq_no, 1);
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+ this->serv.dev_info.id = 0xff;
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+ this->serv.layer.id = 0;
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+ this->serv.layer.receive = cfctrl_recv;
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+ sprintf(this->serv.layer.name, "ctrl");
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+ this->serv.layer.ctrlcmd = cfctrl_ctrlcmd;
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+ spin_lock_init(&this->loop_linkid_lock);
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+ this->loop_linkid = 1;
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+ return &this->serv.layer;
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+}
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+
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+static bool param_eq(struct cfctrl_link_param *p1, struct cfctrl_link_param *p2)
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+{
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+ bool eq =
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+ p1->linktype == p2->linktype &&
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+ p1->priority == p2->priority &&
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+ p1->phyid == p2->phyid &&
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+ p1->endpoint == p2->endpoint && p1->chtype == p2->chtype;
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+
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+ if (!eq)
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+ return false;
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+
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+ switch (p1->linktype) {
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+ case CFCTRL_SRV_VEI:
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+ return true;
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+ case CFCTRL_SRV_DATAGRAM:
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+ return p1->u.datagram.connid == p2->u.datagram.connid;
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+ case CFCTRL_SRV_RFM:
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+ return
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+ p1->u.rfm.connid == p2->u.rfm.connid &&
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+ strcmp(p1->u.rfm.volume, p2->u.rfm.volume) == 0;
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+ case CFCTRL_SRV_UTIL:
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+ return
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+ p1->u.utility.fifosize_kb == p2->u.utility.fifosize_kb
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+ && p1->u.utility.fifosize_bufs ==
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+ p2->u.utility.fifosize_bufs
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+ && strcmp(p1->u.utility.name, p2->u.utility.name) == 0
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+ && p1->u.utility.paramlen == p2->u.utility.paramlen
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+ && memcmp(p1->u.utility.params, p2->u.utility.params,
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+ p1->u.utility.paramlen) == 0;
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+
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+ case CFCTRL_SRV_VIDEO:
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+ return p1->u.video.connid == p2->u.video.connid;
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+ case CFCTRL_SRV_DBG:
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+ return true;
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+ case CFCTRL_SRV_DECM:
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+ return false;
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+ default:
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+ return false;
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+ }
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+ return false;
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+}
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+
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+bool cfctrl_req_eq(struct cfctrl_request_info *r1,
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+ struct cfctrl_request_info *r2)
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+{
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+ if (r1->cmd != r2->cmd)
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+ return false;
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+ if (r1->cmd == CFCTRL_CMD_LINK_SETUP)
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+ return param_eq(&r1->param, &r2->param);
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+ else
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+ return r1->channel_id == r2->channel_id;
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+}
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+
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+/* Insert request at the end */
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+void cfctrl_insert_req(struct cfctrl *ctrl,
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+ struct cfctrl_request_info *req)
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+{
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+ struct cfctrl_request_info *p;
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+ spin_lock(&ctrl->info_list_lock);
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+ req->next = NULL;
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+ atomic_inc(&ctrl->req_seq_no);
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+ req->sequence_no = atomic_read(&ctrl->req_seq_no);
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+ if (ctrl->first_req == NULL) {
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+ ctrl->first_req = req;
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+ spin_unlock(&ctrl->info_list_lock);
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+ return;
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+ }
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+ p = ctrl->first_req;
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+ while (p->next != NULL)
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+ p = p->next;
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+ p->next = req;
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+ spin_unlock(&ctrl->info_list_lock);
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+}
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+
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+static void cfctrl_insert_req2(struct cfctrl *ctrl, enum cfctrl_cmd cmd,
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+ u8 linkid, struct cflayer *user_layer)
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+{
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+ struct cfctrl_request_info *req = kmalloc(sizeof(*req), GFP_KERNEL);
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+ if (!req) {
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+ pr_warning("CAIF: %s(): Out of memory\n", __func__);
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+ return;
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+ }
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+ req->client_layer = user_layer;
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+ req->cmd = cmd;
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+ req->channel_id = linkid;
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+ cfctrl_insert_req(ctrl, req);
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+}
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+
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+/* Compare and remove request */
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+struct cfctrl_request_info *cfctrl_remove_req(struct cfctrl *ctrl,
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+ struct cfctrl_request_info *req)
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+{
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+ struct cfctrl_request_info *p;
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+ struct cfctrl_request_info *ret;
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+
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+ spin_lock(&ctrl->info_list_lock);
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+ if (ctrl->first_req == NULL) {
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+ spin_unlock(&ctrl->info_list_lock);
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+ return NULL;
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+ }
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+
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+ if (cfctrl_req_eq(req, ctrl->first_req)) {
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+ ret = ctrl->first_req;
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+ caif_assert(ctrl->first_req);
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+ atomic_set(&ctrl->rsp_seq_no,
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+ ctrl->first_req->sequence_no);
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+ ctrl->first_req = ctrl->first_req->next;
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+ spin_unlock(&ctrl->info_list_lock);
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+ return ret;
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+ }
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+
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+ p = ctrl->first_req;
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+
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+ while (p->next != NULL) {
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+ if (cfctrl_req_eq(req, p->next)) {
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+ pr_warning("CAIF: %s(): Requests are not "
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+ "received in order\n",
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+ __func__);
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+ ret = p->next;
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+ atomic_set(&ctrl->rsp_seq_no,
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+ p->next->sequence_no);
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+ p->next = p->next->next;
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+ spin_unlock(&ctrl->info_list_lock);
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+ return ret;
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+ }
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+ p = p->next;
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+ }
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+ spin_unlock(&ctrl->info_list_lock);
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+
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+ pr_warning("CAIF: %s(): Request does not match\n",
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+ __func__);
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+ return NULL;
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+}
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+
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+struct cfctrl_rsp *cfctrl_get_respfuncs(struct cflayer *layer)
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+{
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+ struct cfctrl *this = container_obj(layer);
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+ return &this->res;
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+}
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+
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+void cfctrl_set_dnlayer(struct cflayer *this, struct cflayer *dn)
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+{
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+ this->dn = dn;
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+}
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+
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+void cfctrl_set_uplayer(struct cflayer *this, struct cflayer *up)
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+{
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+ this->up = up;
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+}
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+
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+static void init_info(struct caif_payload_info *info, struct cfctrl *cfctrl)
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+{
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+ info->hdr_len = 0;
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+ info->channel_id = cfctrl->serv.layer.id;
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+ info->dev_info = &cfctrl->serv.dev_info;
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+}
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+
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+void cfctrl_enum_req(struct cflayer *layer, u8 physlinkid)
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+{
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+ struct cfctrl *cfctrl = container_obj(layer);
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+ int ret;
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+ struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN);
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+ if (!pkt) {
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+ pr_warning("CAIF: %s(): Out of memory\n", __func__);
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+ return;
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+ }
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+ caif_assert(offsetof(struct cfctrl, serv.layer) == 0);
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+ init_info(cfpkt_info(pkt), cfctrl);
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+ cfpkt_info(pkt)->dev_info->id = physlinkid;
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+ cfctrl->serv.dev_info.id = physlinkid;
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+ cfpkt_addbdy(pkt, CFCTRL_CMD_ENUM);
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+ cfpkt_addbdy(pkt, physlinkid);
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+ ret =
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+ cfctrl->serv.layer.dn->transmit(cfctrl->serv.layer.dn, pkt);
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+ if (ret < 0) {
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+ pr_err("CAIF: %s(): Could not transmit enum message\n",
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+ __func__);
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+ cfpkt_destroy(pkt);
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+ }
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+}
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+
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+void cfctrl_linkup_request(struct cflayer *layer,
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+ struct cfctrl_link_param *param,
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+ struct cflayer *user_layer)
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+{
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+ struct cfctrl *cfctrl = container_obj(layer);
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+ u32 tmp32;
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+ u16 tmp16;
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+ u8 tmp8;
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+ struct cfctrl_request_info *req;
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+ int ret;
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+ char utility_name[16];
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+ struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN);
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+ if (!pkt) {
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+ pr_warning("CAIF: %s(): Out of memory\n", __func__);
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+ return;
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+ }
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+ cfpkt_addbdy(pkt, CFCTRL_CMD_LINK_SETUP);
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+ cfpkt_addbdy(pkt, (param->chtype << 4) + param->linktype);
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+ cfpkt_addbdy(pkt, (param->priority << 3) + param->phyid);
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+ cfpkt_addbdy(pkt, param->endpoint & 0x03);
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+
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+ switch (param->linktype) {
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+ case CFCTRL_SRV_VEI:
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+ break;
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+ case CFCTRL_SRV_VIDEO:
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+ cfpkt_addbdy(pkt, (u8) param->u.video.connid);
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+ break;
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+ case CFCTRL_SRV_DBG:
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+ break;
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+ case CFCTRL_SRV_DATAGRAM:
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+ tmp32 = cpu_to_le32(param->u.datagram.connid);
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+ cfpkt_add_body(pkt, &tmp32, 4);
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+ break;
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+ case CFCTRL_SRV_RFM:
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+ /* Construct a frame, convert DatagramConnectionID to network
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+ * format long and copy it out...
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+ */
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+ tmp32 = cpu_to_le32(param->u.rfm.connid);
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+ cfpkt_add_body(pkt, &tmp32, 4);
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+ /* Add volume name, including zero termination... */
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+ cfpkt_add_body(pkt, param->u.rfm.volume,
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+ strlen(param->u.rfm.volume) + 1);
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+ break;
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+ case CFCTRL_SRV_UTIL:
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+ tmp16 = cpu_to_le16(param->u.utility.fifosize_kb);
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+ cfpkt_add_body(pkt, &tmp16, 2);
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+ tmp16 = cpu_to_le16(param->u.utility.fifosize_bufs);
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+ cfpkt_add_body(pkt, &tmp16, 2);
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+ memset(utility_name, 0, sizeof(utility_name));
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+ strncpy(utility_name, param->u.utility.name,
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+ UTILITY_NAME_LENGTH - 1);
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+ cfpkt_add_body(pkt, utility_name, UTILITY_NAME_LENGTH);
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+ tmp8 = param->u.utility.paramlen;
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+ cfpkt_add_body(pkt, &tmp8, 1);
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+ cfpkt_add_body(pkt, param->u.utility.params,
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+ param->u.utility.paramlen);
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+ break;
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+ default:
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+ pr_warning("CAIF: %s():Request setup of bad link type = %d\n",
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+ __func__, param->linktype);
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+ }
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+ req = kmalloc(sizeof(*req), GFP_KERNEL);
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+ if (!req) {
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+ pr_warning("CAIF: %s(): Out of memory\n", __func__);
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+ return;
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+ }
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+ memset(req, 0, sizeof(*req));
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+ req->client_layer = user_layer;
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+ req->cmd = CFCTRL_CMD_LINK_SETUP;
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+ req->param = *param;
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+ cfctrl_insert_req(cfctrl, req);
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+ init_info(cfpkt_info(pkt), cfctrl);
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+ cfpkt_info(pkt)->dev_info->id = param->phyid;
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+ ret =
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+ cfctrl->serv.layer.dn->transmit(cfctrl->serv.layer.dn, pkt);
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+ if (ret < 0) {
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+ pr_err("CAIF: %s(): Could not transmit linksetup request\n",
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+ __func__);
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+ cfpkt_destroy(pkt);
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+ }
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+}
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+
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+int cfctrl_linkdown_req(struct cflayer *layer, u8 channelid,
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+ struct cflayer *client)
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+{
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+ int ret;
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+ struct cfctrl *cfctrl = container_obj(layer);
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+ struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN);
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+ if (!pkt) {
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+ pr_warning("CAIF: %s(): Out of memory\n", __func__);
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+ return -ENOMEM;
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+ }
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+ cfctrl_insert_req2(cfctrl, CFCTRL_CMD_LINK_DESTROY, channelid, client);
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+ cfpkt_addbdy(pkt, CFCTRL_CMD_LINK_DESTROY);
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+ cfpkt_addbdy(pkt, channelid);
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+ init_info(cfpkt_info(pkt), cfctrl);
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+ ret =
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+ cfctrl->serv.layer.dn->transmit(cfctrl->serv.layer.dn, pkt);
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+ if (ret < 0) {
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+ pr_err("CAIF: %s(): Could not transmit link-down request\n",
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+ __func__);
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+ cfpkt_destroy(pkt);
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+ }
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+ return ret;
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+}
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+
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+void cfctrl_sleep_req(struct cflayer *layer)
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+{
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+ int ret;
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+ struct cfctrl *cfctrl = container_obj(layer);
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+ struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN);
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+ if (!pkt) {
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+ pr_warning("CAIF: %s(): Out of memory\n", __func__);
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+ return;
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+ }
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+ cfpkt_addbdy(pkt, CFCTRL_CMD_SLEEP);
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+ init_info(cfpkt_info(pkt), cfctrl);
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+ ret =
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+ cfctrl->serv.layer.dn->transmit(cfctrl->serv.layer.dn, pkt);
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+ if (ret < 0)
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+ cfpkt_destroy(pkt);
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+}
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+
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+void cfctrl_wake_req(struct cflayer *layer)
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+{
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+ int ret;
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+ struct cfctrl *cfctrl = container_obj(layer);
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+ struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN);
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+ if (!pkt) {
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+ pr_warning("CAIF: %s(): Out of memory\n", __func__);
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+ return;
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+ }
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+ cfpkt_addbdy(pkt, CFCTRL_CMD_WAKE);
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+ init_info(cfpkt_info(pkt), cfctrl);
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+ ret =
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+ cfctrl->serv.layer.dn->transmit(cfctrl->serv.layer.dn, pkt);
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+ if (ret < 0)
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+ cfpkt_destroy(pkt);
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+}
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+
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+void cfctrl_getstartreason_req(struct cflayer *layer)
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+{
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+ int ret;
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|
+ struct cfctrl *cfctrl = container_obj(layer);
|
|
|
+ struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN);
|
|
|
+ if (!pkt) {
|
|
|
+ pr_warning("CAIF: %s(): Out of memory\n", __func__);
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ cfpkt_addbdy(pkt, CFCTRL_CMD_START_REASON);
|
|
|
+ init_info(cfpkt_info(pkt), cfctrl);
|
|
|
+ ret =
|
|
|
+ cfctrl->serv.layer.dn->transmit(cfctrl->serv.layer.dn, pkt);
|
|
|
+ if (ret < 0)
|
|
|
+ cfpkt_destroy(pkt);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+static int cfctrl_recv(struct cflayer *layer, struct cfpkt *pkt)
|
|
|
+{
|
|
|
+ u8 cmdrsp;
|
|
|
+ u8 cmd;
|
|
|
+ int ret = -1;
|
|
|
+ u16 tmp16;
|
|
|
+ u8 len;
|
|
|
+ u8 param[255];
|
|
|
+ u8 linkid;
|
|
|
+ struct cfctrl *cfctrl = container_obj(layer);
|
|
|
+ struct cfctrl_request_info rsp, *req;
|
|
|
+
|
|
|
+
|
|
|
+ cfpkt_extr_head(pkt, &cmdrsp, 1);
|
|
|
+ cmd = cmdrsp & CFCTRL_CMD_MASK;
|
|
|
+ if (cmd != CFCTRL_CMD_LINK_ERR
|
|
|
+ && CFCTRL_RSP_BIT != (CFCTRL_RSP_BIT & cmdrsp)) {
|
|
|
+ if (handle_loop(cfctrl, cmd, pkt) == CAIF_FAILURE) {
|
|
|
+ pr_info("CAIF: %s() CAIF Protocol error:"
|
|
|
+ "Response bit not set\n", __func__);
|
|
|
+ goto error;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ switch (cmd) {
|
|
|
+ case CFCTRL_CMD_LINK_SETUP:
|
|
|
+ {
|
|
|
+ enum cfctrl_srv serv;
|
|
|
+ enum cfctrl_srv servtype;
|
|
|
+ u8 endpoint;
|
|
|
+ u8 physlinkid;
|
|
|
+ u8 prio;
|
|
|
+ u8 tmp;
|
|
|
+ u32 tmp32;
|
|
|
+ u8 *cp;
|
|
|
+ int i;
|
|
|
+ struct cfctrl_link_param linkparam;
|
|
|
+ memset(&linkparam, 0, sizeof(linkparam));
|
|
|
+
|
|
|
+ cfpkt_extr_head(pkt, &tmp, 1);
|
|
|
+
|
|
|
+ serv = tmp & CFCTRL_SRV_MASK;
|
|
|
+ linkparam.linktype = serv;
|
|
|
+
|
|
|
+ servtype = tmp >> 4;
|
|
|
+ linkparam.chtype = servtype;
|
|
|
+
|
|
|
+ cfpkt_extr_head(pkt, &tmp, 1);
|
|
|
+ physlinkid = tmp & 0x07;
|
|
|
+ prio = tmp >> 3;
|
|
|
+
|
|
|
+ linkparam.priority = prio;
|
|
|
+ linkparam.phyid = physlinkid;
|
|
|
+ cfpkt_extr_head(pkt, &endpoint, 1);
|
|
|
+ linkparam.endpoint = endpoint & 0x03;
|
|
|
+
|
|
|
+ switch (serv) {
|
|
|
+ case CFCTRL_SRV_VEI:
|
|
|
+ case CFCTRL_SRV_DBG:
|
|
|
+ /* Link ID */
|
|
|
+ cfpkt_extr_head(pkt, &linkid, 1);
|
|
|
+ break;
|
|
|
+ case CFCTRL_SRV_VIDEO:
|
|
|
+ cfpkt_extr_head(pkt, &tmp, 1);
|
|
|
+ linkparam.u.video.connid = tmp;
|
|
|
+ /* Link ID */
|
|
|
+ cfpkt_extr_head(pkt, &linkid, 1);
|
|
|
+ break;
|
|
|
+
|
|
|
+ case CFCTRL_SRV_DATAGRAM:
|
|
|
+ cfpkt_extr_head(pkt, &tmp32, 4);
|
|
|
+ linkparam.u.datagram.connid =
|
|
|
+ le32_to_cpu(tmp32);
|
|
|
+ /* Link ID */
|
|
|
+ cfpkt_extr_head(pkt, &linkid, 1);
|
|
|
+ break;
|
|
|
+ case CFCTRL_SRV_RFM:
|
|
|
+ /* Construct a frame, convert
|
|
|
+ * DatagramConnectionID
|
|
|
+ * to network format long and copy it out...
|
|
|
+ */
|
|
|
+ cfpkt_extr_head(pkt, &tmp32, 4);
|
|
|
+ linkparam.u.rfm.connid =
|
|
|
+ le32_to_cpu(tmp32);
|
|
|
+ cp = (u8 *) linkparam.u.rfm.volume;
|
|
|
+ for (cfpkt_extr_head(pkt, &tmp, 1);
|
|
|
+ cfpkt_more(pkt) && tmp != '\0';
|
|
|
+ cfpkt_extr_head(pkt, &tmp, 1))
|
|
|
+ *cp++ = tmp;
|
|
|
+ *cp = '\0';
|
|
|
+
|
|
|
+ /* Link ID */
|
|
|
+ cfpkt_extr_head(pkt, &linkid, 1);
|
|
|
+
|
|
|
+ break;
|
|
|
+ case CFCTRL_SRV_UTIL:
|
|
|
+ /* Construct a frame, convert
|
|
|
+ * DatagramConnectionID
|
|
|
+ * to network format long and copy it out...
|
|
|
+ */
|
|
|
+ /* Fifosize KB */
|
|
|
+ cfpkt_extr_head(pkt, &tmp16, 2);
|
|
|
+ linkparam.u.utility.fifosize_kb =
|
|
|
+ le16_to_cpu(tmp16);
|
|
|
+ /* Fifosize bufs */
|
|
|
+ cfpkt_extr_head(pkt, &tmp16, 2);
|
|
|
+ linkparam.u.utility.fifosize_bufs =
|
|
|
+ le16_to_cpu(tmp16);
|
|
|
+ /* name */
|
|
|
+ cp = (u8 *) linkparam.u.utility.name;
|
|
|
+ caif_assert(sizeof(linkparam.u.utility.name)
|
|
|
+ >= UTILITY_NAME_LENGTH);
|
|
|
+ for (i = 0;
|
|
|
+ i < UTILITY_NAME_LENGTH
|
|
|
+ && cfpkt_more(pkt); i++) {
|
|
|
+ cfpkt_extr_head(pkt, &tmp, 1);
|
|
|
+ *cp++ = tmp;
|
|
|
+ }
|
|
|
+ /* Length */
|
|
|
+ cfpkt_extr_head(pkt, &len, 1);
|
|
|
+ linkparam.u.utility.paramlen = len;
|
|
|
+ /* Param Data */
|
|
|
+ cp = linkparam.u.utility.params;
|
|
|
+ while (cfpkt_more(pkt) && len--) {
|
|
|
+ cfpkt_extr_head(pkt, &tmp, 1);
|
|
|
+ *cp++ = tmp;
|
|
|
+ }
|
|
|
+ /* Link ID */
|
|
|
+ cfpkt_extr_head(pkt, &linkid, 1);
|
|
|
+ /* Length */
|
|
|
+ cfpkt_extr_head(pkt, &len, 1);
|
|
|
+ /* Param Data */
|
|
|
+ cfpkt_extr_head(pkt, ¶m, len);
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ pr_warning("CAIF: %s(): Request setup "
|
|
|
+ "- invalid link type (%d)",
|
|
|
+ __func__, serv);
|
|
|
+ goto error;
|
|
|
+ }
|
|
|
+
|
|
|
+ rsp.cmd = cmd;
|
|
|
+ rsp.param = linkparam;
|
|
|
+ req = cfctrl_remove_req(cfctrl, &rsp);
|
|
|
+
|
|
|
+ if (CFCTRL_ERR_BIT == (CFCTRL_ERR_BIT & cmdrsp) ||
|
|
|
+ cfpkt_erroneous(pkt)) {
|
|
|
+ pr_err("CAIF: %s(): Invalid O/E bit or parse "
|
|
|
+ "error on CAIF control channel",
|
|
|
+ __func__);
|
|
|
+ cfctrl->res.reject_rsp(cfctrl->serv.layer.up,
|
|
|
+ 0,
|
|
|
+ req ? req->client_layer
|
|
|
+ : NULL);
|
|
|
+ } else {
|
|
|
+ cfctrl->res.linksetup_rsp(cfctrl->serv.
|
|
|
+ layer.up, linkid,
|
|
|
+ serv, physlinkid,
|
|
|
+ req ? req->
|
|
|
+ client_layer : NULL);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (req != NULL)
|
|
|
+ kfree(req);
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case CFCTRL_CMD_LINK_DESTROY:
|
|
|
+ cfpkt_extr_head(pkt, &linkid, 1);
|
|
|
+ rsp.cmd = cmd;
|
|
|
+ rsp.channel_id = linkid;
|
|
|
+ req = cfctrl_remove_req(cfctrl, &rsp);
|
|
|
+ cfctrl->res.linkdestroy_rsp(cfctrl->serv.layer.up, linkid,
|
|
|
+ req ? req->client_layer : NULL);
|
|
|
+ if (req != NULL)
|
|
|
+ kfree(req);
|
|
|
+ break;
|
|
|
+ case CFCTRL_CMD_LINK_ERR:
|
|
|
+ pr_err("CAIF: %s(): Frame Error Indication received\n",
|
|
|
+ __func__);
|
|
|
+ cfctrl->res.linkerror_ind();
|
|
|
+ break;
|
|
|
+ case CFCTRL_CMD_ENUM:
|
|
|
+ cfctrl->res.enum_rsp();
|
|
|
+ break;
|
|
|
+ case CFCTRL_CMD_SLEEP:
|
|
|
+ cfctrl->res.sleep_rsp();
|
|
|
+ break;
|
|
|
+ case CFCTRL_CMD_WAKE:
|
|
|
+ cfctrl->res.wake_rsp();
|
|
|
+ break;
|
|
|
+ case CFCTRL_CMD_LINK_RECONF:
|
|
|
+ cfctrl->res.restart_rsp();
|
|
|
+ break;
|
|
|
+ case CFCTRL_CMD_RADIO_SET:
|
|
|
+ cfctrl->res.radioset_rsp();
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ pr_err("CAIF: %s(): Unrecognized Control Frame\n", __func__);
|
|
|
+ goto error;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ ret = 0;
|
|
|
+error:
|
|
|
+ cfpkt_destroy(pkt);
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static void cfctrl_ctrlcmd(struct cflayer *layr, enum caif_ctrlcmd ctrl,
|
|
|
+ int phyid)
|
|
|
+{
|
|
|
+ struct cfctrl *this = container_obj(layr);
|
|
|
+ switch (ctrl) {
|
|
|
+ case _CAIF_CTRLCMD_PHYIF_FLOW_OFF_IND:
|
|
|
+ case CAIF_CTRLCMD_FLOW_OFF_IND:
|
|
|
+ spin_lock(&this->info_list_lock);
|
|
|
+ if (this->first_req != NULL) {
|
|
|
+ pr_warning("CAIF: %s(): Received flow off in "
|
|
|
+ "control layer", __func__);
|
|
|
+ }
|
|
|
+ spin_unlock(&this->info_list_lock);
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ break;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+#ifndef CAIF_NO_LOOP
|
|
|
+static int handle_loop(struct cfctrl *ctrl, int cmd, struct cfpkt *pkt)
|
|
|
+{
|
|
|
+ static int last_linkid;
|
|
|
+ u8 linkid, linktype, tmp;
|
|
|
+ switch (cmd) {
|
|
|
+ case CFCTRL_CMD_LINK_SETUP:
|
|
|
+ spin_lock(&ctrl->loop_linkid_lock);
|
|
|
+ for (linkid = last_linkid + 1; linkid < 255; linkid++)
|
|
|
+ if (!ctrl->loop_linkused[linkid])
|
|
|
+ goto found;
|
|
|
+ for (linkid = last_linkid - 1; linkid > 0; linkid--)
|
|
|
+ if (!ctrl->loop_linkused[linkid])
|
|
|
+ goto found;
|
|
|
+ spin_unlock(&ctrl->loop_linkid_lock);
|
|
|
+ return -EINVAL;
|
|
|
+found:
|
|
|
+ if (!ctrl->loop_linkused[linkid])
|
|
|
+ ctrl->loop_linkused[linkid] = 1;
|
|
|
+
|
|
|
+ last_linkid = linkid;
|
|
|
+
|
|
|
+ cfpkt_add_trail(pkt, &linkid, 1);
|
|
|
+ spin_unlock(&ctrl->loop_linkid_lock);
|
|
|
+ cfpkt_peek_head(pkt, &linktype, 1);
|
|
|
+ if (linktype == CFCTRL_SRV_UTIL) {
|
|
|
+ tmp = 0x01;
|
|
|
+ cfpkt_add_trail(pkt, &tmp, 1);
|
|
|
+ cfpkt_add_trail(pkt, &tmp, 1);
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+ case CFCTRL_CMD_LINK_DESTROY:
|
|
|
+ spin_lock(&ctrl->loop_linkid_lock);
|
|
|
+ cfpkt_peek_head(pkt, &linkid, 1);
|
|
|
+ ctrl->loop_linkused[linkid] = 0;
|
|
|
+ spin_unlock(&ctrl->loop_linkid_lock);
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ return CAIF_SUCCESS;
|
|
|
+}
|
|
|
+#endif
|