nexmon – Rev 1

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/*
 * Copyright (c) 2013 Broadcom Corporation
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */


 #include <linux/types.h>
#include <linux/slab.h>
#include <linux/netdevice.h>

#include <brcmu_wifi.h>
#include "core.h"
#include "bus.h"
#include "debug.h"
#include "proto.h"
#include "bcdc.h"
#include "msgbuf.h"


int brcmf_proto_attach(struct brcmf_pub *drvr)
{
        struct brcmf_proto *proto;

        brcmf_dbg(TRACE, "Enter\n");

        proto = kzalloc(sizeof(*proto), GFP_ATOMIC);
        if (!proto)
                goto fail;

        drvr->proto = proto;

        if (drvr->bus_if->proto_type == BRCMF_PROTO_BCDC) {
                if (brcmf_proto_bcdc_attach(drvr))
                        goto fail;
        } else if (drvr->bus_if->proto_type == BRCMF_PROTO_MSGBUF) {
                if (brcmf_proto_msgbuf_attach(drvr))
                        goto fail;
        } else {
                brcmf_err("Unsupported proto type %d\n",
                          drvr->bus_if->proto_type);
                goto fail;
        }
        if (!proto->tx_queue_data || (proto->hdrpull == NULL) ||
            (proto->query_dcmd == NULL) || (proto->set_dcmd == NULL) ||
            (proto->configure_addr_mode == NULL) ||
            (proto->delete_peer == NULL) || (proto->add_tdls_peer == NULL)) {
                brcmf_err("Not all proto handlers have been installed\n");
                goto fail;
        }
        return 0;

fail:
        kfree(proto);
        drvr->proto = NULL;
        return -ENOMEM;
}

void brcmf_proto_detach(struct brcmf_pub *drvr)
{
        brcmf_dbg(TRACE, "Enter\n");

        if (drvr->proto) {
                if (drvr->bus_if->proto_type == BRCMF_PROTO_BCDC)
                        brcmf_proto_bcdc_detach(drvr);
                else if (drvr->bus_if->proto_type == BRCMF_PROTO_MSGBUF)
                        brcmf_proto_msgbuf_detach(drvr);
                kfree(drvr->proto);
                drvr->proto = NULL;
        }
}