brcm80211/brcmfmac/proto.c

0001 // SPDX-License-Identifier: ISC
0002 /*
0003  * Copyright (c) 2013 Broadcom Corporation
0004  */
0005
0006
0007  #include <linux/types.h>
0008 #include <linux/slab.h>
0009 #include <linux/netdevice.h>
0010
0011 #include <brcmu_wifi.h>
0012 #include "core.h"
0013 #include "bus.h"
0014 #include "debug.h"
0015 #include "proto.h"
0016 #include "bcdc.h"
0017 #include "msgbuf.h"
0018
0019
0020 int brcmf_proto_attach(struct brcmf_pub *drvr)
0021 {
0022     struct brcmf_proto *proto;
0023
0024     brcmf_dbg(TRACE, "Enter\n");
0025
0026     proto = kzalloc(sizeof(*proto), GFP_ATOMIC);
0027     if (!proto)
0028         goto fail;
0029
0030     drvr->proto = proto;
0031
0032     if (drvr->bus_if->proto_type == BRCMF_PROTO_BCDC) {
0033         if (brcmf_proto_bcdc_attach(drvr))
0034             goto fail;
0035     } else if (drvr->bus_if->proto_type == BRCMF_PROTO_MSGBUF) {
0036         if (brcmf_proto_msgbuf_attach(drvr))
0037             goto fail;
0038     } else {
0039         bphy_err(drvr, "Unsupported proto type %d\n",
0040              drvr->bus_if->proto_type);
0041         goto fail;
0042     }
0043     if (!proto->tx_queue_data || (proto->hdrpull == NULL) ||
0044         (proto->query_dcmd == NULL) || (proto->set_dcmd == NULL) ||
0045         (proto->configure_addr_mode == NULL) ||
0046         (proto->delete_peer == NULL) || (proto->add_tdls_peer == NULL) ||
0047         (proto->debugfs_create == NULL)) {
0048         bphy_err(drvr, "Not all proto handlers have been installed\n");
0049         goto fail;
0050     }
0051     return 0;
0052
0053 fail:
0054     kfree(proto);
0055     drvr->proto = NULL;
0056     return -ENOMEM;
0057 }
0058
0059 void brcmf_proto_detach(struct brcmf_pub *drvr)
0060 {
0061     brcmf_dbg(TRACE, "Enter\n");
0062
0063     if (drvr->proto) {
0064         if (drvr->bus_if->proto_type == BRCMF_PROTO_BCDC)
0065             brcmf_proto_bcdc_detach(drvr);
0066         else if (drvr->bus_if->proto_type == BRCMF_PROTO_MSGBUF)
0067             brcmf_proto_msgbuf_detach(drvr);
0068         kfree(drvr->proto);
0069         drvr->proto = NULL;
0070     }
0071 }