1 /* 2 * Copyright (c) 2013 Broadcom Corporation 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 18 #include <linux/types.h> 19 #include <linux/slab.h> 20 #include <linux/netdevice.h> 21 22 #include <brcmu_wifi.h> 23 #include "core.h" 24 #include "bus.h" 25 #include "debug.h" 26 #include "proto.h" 27 #include "bcdc.h" 28 #include "msgbuf.h" 29 30 31 int brcmf_proto_attach(struct brcmf_pub *drvr) 32 { 33 struct brcmf_proto *proto; 34 35 brcmf_dbg(TRACE, "Enter\n"); 36 37 proto = kzalloc(sizeof(*proto), GFP_ATOMIC); 38 if (!proto) 39 goto fail; 40 41 drvr->proto = proto; 42 43 if (drvr->bus_if->proto_type == BRCMF_PROTO_BCDC) { 44 if (brcmf_proto_bcdc_attach(drvr)) 45 goto fail; 46 } else if (drvr->bus_if->proto_type == BRCMF_PROTO_MSGBUF) { 47 if (brcmf_proto_msgbuf_attach(drvr)) 48 goto fail; 49 } else { 50 brcmf_err("Unsupported proto type %d\n", 51 drvr->bus_if->proto_type); 52 goto fail; 53 } 54 if (!proto->tx_queue_data || (proto->hdrpull == NULL) || 55 (proto->query_dcmd == NULL) || (proto->set_dcmd == NULL) || 56 (proto->configure_addr_mode == NULL) || 57 (proto->delete_peer == NULL) || (proto->add_tdls_peer == NULL)) { 58 brcmf_err("Not all proto handlers have been installed\n"); 59 goto fail; 60 } 61 return 0; 62 63 fail: 64 kfree(proto); 65 drvr->proto = NULL; 66 return -ENOMEM; 67 } 68 69 void brcmf_proto_detach(struct brcmf_pub *drvr) 70 { 71 brcmf_dbg(TRACE, "Enter\n"); 72 73 if (drvr->proto) { 74 if (drvr->bus_if->proto_type == BRCMF_PROTO_BCDC) 75 brcmf_proto_bcdc_detach(drvr); 76 else if (drvr->bus_if->proto_type == BRCMF_PROTO_MSGBUF) 77 brcmf_proto_msgbuf_detach(drvr); 78 kfree(drvr->proto); 79 drvr->proto = NULL; 80 } 81 } 82