a2mp.c revision 0d868de9d8760c76f6d4c6c777935c05ef272caa
1466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko/* 2466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko Copyright (c) 2010,2011 Code Aurora Forum. All rights reserved. 3466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko Copyright (c) 2011,2012 Intel Corp. 4466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 5466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko This program is free software; you can redistribute it and/or modify 6466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko it under the terms of the GNU General Public License version 2 and 7466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko only version 2 as published by the Free Software Foundation. 8466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 9466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko This program is distributed in the hope that it will be useful, 10466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko but WITHOUT ANY WARRANTY; without even the implied warranty of 11466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko GNU General Public License for more details. 13466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko*/ 14466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 15466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko#include <net/bluetooth/bluetooth.h> 16466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko#include <net/bluetooth/hci_core.h> 17466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko#include <net/bluetooth/l2cap.h> 189740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko#include <net/bluetooth/a2mp.h> 19903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko#include <net/bluetooth/amp.h> 20466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 21f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko/* Global AMP Manager list */ 22f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei EmeltchenkoLIST_HEAD(amp_mgr_list); 23f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei EmeltchenkoDEFINE_MUTEX(amp_mgr_list_lock); 24f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko 25f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko/* A2MP build & send command helper functions */ 26f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenkostatic struct a2mp_cmd *__a2mp_build(u8 code, u8 ident, u16 len, void *data) 27f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko{ 28f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko struct a2mp_cmd *cmd; 29f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko int plen; 30f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko 31f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko plen = sizeof(*cmd) + len; 32f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko cmd = kzalloc(plen, GFP_KERNEL); 33f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko if (!cmd) 34f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko return NULL; 35f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko 36f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko cmd->code = code; 37f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko cmd->ident = ident; 38f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko cmd->len = cpu_to_le16(len); 39f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko 40f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko memcpy(cmd->data, data, len); 41f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko 42f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko return cmd; 43f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko} 44f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko 458e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenkovoid a2mp_send(struct amp_mgr *mgr, u8 code, u8 ident, u16 len, void *data) 46f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko{ 47f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko struct l2cap_chan *chan = mgr->a2mp_chan; 48f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko struct a2mp_cmd *cmd; 49f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko u16 total_len = len + sizeof(*cmd); 50f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko struct kvec iv; 51f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko struct msghdr msg; 52f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko 53f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko cmd = __a2mp_build(code, ident, len, data); 54f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko if (!cmd) 55f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko return; 56f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko 57f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko iv.iov_base = cmd; 58f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko iv.iov_len = total_len; 59f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko 60f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko memset(&msg, 0, sizeof(msg)); 61f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko 62f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko msg.msg_iov = (struct iovec *) &iv; 63f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko msg.msg_iovlen = 1; 64f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko 65f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko l2cap_chan_send(chan, &msg, total_len, 0); 66f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko 67f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko kfree(cmd); 68f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko} 69f6d3c6e783b0e9f75b18232f8ff8cd5dbc3f7301Andrei Emeltchenko 70aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenkostatic u8 __next_ident(struct amp_mgr *mgr) 71aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko{ 72aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko if (++mgr->ident == 0) 73aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko mgr->ident = 1; 74aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 75aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko return mgr->ident; 76aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko} 77aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 788598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenkostatic inline void __a2mp_cl_bredr(struct a2mp_cl *cl) 798598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko{ 808598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko cl->id = 0; 818598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko cl->type = 0; 828598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko cl->status = 1; 838598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko} 848598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 858598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko/* hci_dev_list shall be locked */ 868598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenkostatic void __a2mp_add_cl(struct amp_mgr *mgr, struct a2mp_cl *cl, u8 num_ctrl) 878598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko{ 888598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko int i = 0; 898598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko struct hci_dev *hdev; 908598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 918598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko __a2mp_cl_bredr(cl); 928598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 938598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko list_for_each_entry(hdev, &hci_dev_list, list) { 948598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko /* Iterate through AMP controllers */ 958598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko if (hdev->id == HCI_BREDR_ID) 968598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko continue; 978598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 988598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko /* Starting from second entry */ 998598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko if (++i >= num_ctrl) 1008598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko return; 1018598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 1028598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko cl[i].id = hdev->id; 1038598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko cl[i].type = hdev->amp_type; 1048598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko cl[i].status = hdev->amp_status; 1058598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko } 1068598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko} 1078598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 10821dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko/* Processing A2MP messages */ 10921dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenkostatic int a2mp_command_rej(struct amp_mgr *mgr, struct sk_buff *skb, 11021dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko struct a2mp_cmd *hdr) 11121dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko{ 11221dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko struct a2mp_cmd_rej *rej = (void *) skb->data; 11321dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko 11421dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko if (le16_to_cpu(hdr->len) < sizeof(*rej)) 11521dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko return -EINVAL; 11621dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko 11721dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko BT_DBG("ident %d reason %d", hdr->ident, le16_to_cpu(rej->reason)); 11821dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko 11921dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko skb_pull(skb, sizeof(*rej)); 12021dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko 12121dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko return 0; 12221dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko} 12321dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko 1248598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenkostatic int a2mp_discover_req(struct amp_mgr *mgr, struct sk_buff *skb, 1258598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko struct a2mp_cmd *hdr) 1268598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko{ 1278598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko struct a2mp_discov_req *req = (void *) skb->data; 1288598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko u16 len = le16_to_cpu(hdr->len); 1298598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko struct a2mp_discov_rsp *rsp; 1308598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko u16 ext_feat; 1318598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko u8 num_ctrl; 1328598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 1338598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko if (len < sizeof(*req)) 1348598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko return -EINVAL; 1358598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 1368598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko skb_pull(skb, sizeof(*req)); 1378598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 1388598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko ext_feat = le16_to_cpu(req->ext_feat); 1398598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 1408598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko BT_DBG("mtu %d efm 0x%4.4x", le16_to_cpu(req->mtu), ext_feat); 1418598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 1428598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko /* check that packet is not broken for now */ 1438598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko while (ext_feat & A2MP_FEAT_EXT) { 1448598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko if (len < sizeof(ext_feat)) 1458598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko return -EINVAL; 1468598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 1478598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko ext_feat = get_unaligned_le16(skb->data); 1488598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko BT_DBG("efm 0x%4.4x", ext_feat); 1498598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko len -= sizeof(ext_feat); 1508598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko skb_pull(skb, sizeof(ext_feat)); 1518598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko } 1528598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 1538598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko read_lock(&hci_dev_list_lock); 1548598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 1558598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko num_ctrl = __hci_num_ctrl(); 1568598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko len = num_ctrl * sizeof(struct a2mp_cl) + sizeof(*rsp); 1578598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko rsp = kmalloc(len, GFP_ATOMIC); 1588598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko if (!rsp) { 1598598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko read_unlock(&hci_dev_list_lock); 1608598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko return -ENOMEM; 1618598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko } 1628598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 1638598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko rsp->mtu = __constant_cpu_to_le16(L2CAP_A2MP_DEFAULT_MTU); 1648598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko rsp->ext_feat = 0; 1658598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 1668598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko __a2mp_add_cl(mgr, rsp->cl, num_ctrl); 1678598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 1688598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko read_unlock(&hci_dev_list_lock); 1698598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 1708598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko a2mp_send(mgr, A2MP_DISCOVER_RSP, hdr->ident, len, rsp); 1718598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 1728598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko kfree(rsp); 1738598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko return 0; 1748598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko} 1758598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 176aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenkostatic int a2mp_discover_rsp(struct amp_mgr *mgr, struct sk_buff *skb, 177aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko struct a2mp_cmd *hdr) 178aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko{ 179aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko struct a2mp_discov_rsp *rsp = (void *) skb->data; 180aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko u16 len = le16_to_cpu(hdr->len); 181aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko struct a2mp_cl *cl; 182aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko u16 ext_feat; 183aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 184aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko if (len < sizeof(*rsp)) 185aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko return -EINVAL; 186aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 187aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko len -= sizeof(*rsp); 188aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko skb_pull(skb, sizeof(*rsp)); 189aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 190aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko ext_feat = le16_to_cpu(rsp->ext_feat); 191aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 192aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko BT_DBG("mtu %d efm 0x%4.4x", le16_to_cpu(rsp->mtu), ext_feat); 193aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 194aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko /* check that packet is not broken for now */ 195aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko while (ext_feat & A2MP_FEAT_EXT) { 196aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko if (len < sizeof(ext_feat)) 197aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko return -EINVAL; 198aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 199aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko ext_feat = get_unaligned_le16(skb->data); 200aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko BT_DBG("efm 0x%4.4x", ext_feat); 201aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko len -= sizeof(ext_feat); 202aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko skb_pull(skb, sizeof(ext_feat)); 203aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko } 204aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 205aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko cl = (void *) skb->data; 206aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko while (len >= sizeof(*cl)) { 207aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko BT_DBG("Remote AMP id %d type %d status %d", cl->id, cl->type, 208aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko cl->status); 209aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 210aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko if (cl->id != HCI_BREDR_ID && cl->type == HCI_AMP) { 211aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko struct a2mp_info_req req; 212aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 213aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko req.id = cl->id; 214aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko a2mp_send(mgr, A2MP_GETINFO_REQ, __next_ident(mgr), 215aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko sizeof(req), &req); 216aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko } 217aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 218aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko len -= sizeof(*cl); 219aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko cl = (void *) skb_pull(skb, sizeof(*cl)); 220aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko } 221aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 222aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko return 0; 223aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko} 224aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 225329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenkostatic int a2mp_change_notify(struct amp_mgr *mgr, struct sk_buff *skb, 226329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko struct a2mp_cmd *hdr) 227329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko{ 228329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko struct a2mp_cl *cl = (void *) skb->data; 229329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko 230329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko while (skb->len >= sizeof(*cl)) { 231329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko BT_DBG("Controller id %d type %d status %d", cl->id, cl->type, 232329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko cl->status); 233329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko cl = (struct a2mp_cl *) skb_pull(skb, sizeof(*cl)); 234329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko } 235329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko 236329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko /* TODO send A2MP_CHANGE_RSP */ 237329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko 238329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko return 0; 239329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko} 240329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko 24147f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenkostatic int a2mp_getinfo_req(struct amp_mgr *mgr, struct sk_buff *skb, 24247f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko struct a2mp_cmd *hdr) 24347f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko{ 24447f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko struct a2mp_info_req *req = (void *) skb->data; 24547f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko struct hci_dev *hdev; 24647f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko 24747f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko if (le16_to_cpu(hdr->len) < sizeof(*req)) 24847f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko return -EINVAL; 24947f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko 25047f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko BT_DBG("id %d", req->id); 25147f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko 25247f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko hdev = hci_dev_get(req->id); 2538e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko if (!hdev) { 2548e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko struct a2mp_info_rsp rsp; 2558e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 2568e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.id = req->id; 2578e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.status = A2MP_STATUS_INVALID_CTRL_ID; 2588e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 2598e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko a2mp_send(mgr, A2MP_GETINFO_RSP, hdr->ident, sizeof(rsp), 2608e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko &rsp); 26147f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko } 26247f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko 2638e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko if (hdev->dev_type != HCI_BREDR) { 2648e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko mgr->state = READ_LOC_AMP_INFO; 2658e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); 2668e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko } 26747f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko 2688e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko hci_dev_put(hdev); 26947f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko 27047f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko skb_pull(skb, sizeof(*req)); 27147f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko return 0; 27247f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko} 27347f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko 2740d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenkostatic int a2mp_getinfo_rsp(struct amp_mgr *mgr, struct sk_buff *skb, 2750d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko struct a2mp_cmd *hdr) 2760d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko{ 2770d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko struct a2mp_info_rsp *rsp = (struct a2mp_info_rsp *) skb->data; 2780d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko struct a2mp_amp_assoc_req req; 2790d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko struct amp_ctrl *ctrl; 2800d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 2810d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko if (le16_to_cpu(hdr->len) < sizeof(*rsp)) 2820d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko return -EINVAL; 2830d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 2840d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko BT_DBG("id %d status 0x%2.2x", rsp->id, rsp->status); 2850d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 2860d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko if (rsp->status) 2870d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko return -EINVAL; 2880d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 2890d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko ctrl = amp_ctrl_add(mgr); 2900d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko if (!ctrl) 2910d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko return -ENOMEM; 2920d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 2930d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko ctrl->id = rsp->id; 2940d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 2950d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko req.id = rsp->id; 2960d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko a2mp_send(mgr, A2MP_GETAMPASSOC_REQ, __next_ident(mgr), sizeof(req), 2970d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko &req); 2980d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 2990d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko skb_pull(skb, sizeof(*rsp)); 3000d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko return 0; 3010d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko} 3020d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 303a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenkostatic int a2mp_getampassoc_req(struct amp_mgr *mgr, struct sk_buff *skb, 304a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko struct a2mp_cmd *hdr) 305a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko{ 306a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko struct a2mp_amp_assoc_req *req = (void *) skb->data; 307a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko struct hci_dev *hdev; 308903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko struct amp_mgr *tmp; 309a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko 310a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko if (le16_to_cpu(hdr->len) < sizeof(*req)) 311a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko return -EINVAL; 312a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko 313a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko BT_DBG("id %d", req->id); 314a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko 315903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko /* Make sure that other request is not processed */ 316903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko tmp = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC); 317903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 318a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko hdev = hci_dev_get(req->id); 319903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko if (!hdev || hdev->amp_type == HCI_BREDR || tmp) { 320a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko struct a2mp_amp_assoc_rsp rsp; 321a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko rsp.id = req->id; 322903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 323903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko if (tmp) { 324903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko rsp.status = A2MP_STATUS_COLLISION_OCCURED; 325903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko amp_mgr_put(tmp); 326903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko } else { 327903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko rsp.status = A2MP_STATUS_INVALID_CTRL_ID; 328903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko } 329a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko 330a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko a2mp_send(mgr, A2MP_GETAMPASSOC_RSP, hdr->ident, sizeof(rsp), 331a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko &rsp); 332903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 333903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko goto done; 334a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko } 335a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko 336903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko amp_read_loc_assoc(hdev, mgr); 337a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko 338903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenkodone: 339a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko if (hdev) 340a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko hci_dev_put(hdev); 341a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko 342a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko skb_pull(skb, sizeof(*req)); 343a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko return 0; 344a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko} 345a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko 346e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenkostatic int a2mp_createphyslink_req(struct amp_mgr *mgr, struct sk_buff *skb, 347e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko struct a2mp_cmd *hdr) 348e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko{ 349e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko struct a2mp_physlink_req *req = (void *) skb->data; 350e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 351e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko struct a2mp_physlink_rsp rsp; 352e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko struct hci_dev *hdev; 353cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko struct hci_conn *hcon; 354e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 355e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko if (le16_to_cpu(hdr->len) < sizeof(*req)) 356e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko return -EINVAL; 357e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 358e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko BT_DBG("local_id %d, remote_id %d", req->local_id, req->remote_id); 359e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 360e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko rsp.local_id = req->remote_id; 361e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko rsp.remote_id = req->local_id; 362e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 363e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko hdev = hci_dev_get(req->remote_id); 364e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko if (!hdev || hdev->amp_type != HCI_AMP) { 365e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko rsp.status = A2MP_STATUS_INVALID_CTRL_ID; 366e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko goto send_rsp; 367e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko } 368e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 369e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko /* TODO process physlink create */ 370e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 371cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko hcon = phylink_add(hdev, mgr, req->local_id); 372cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko if (hcon) { 373cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko BT_DBG("hcon %p", hcon); 374cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko 375cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko rsp.status = A2MP_STATUS_SUCCESS; 376cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko } else { 377cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko rsp.status = A2MP_STATUS_UNABLE_START_LINK_CREATION; 378cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko } 379e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 380e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenkosend_rsp: 381e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko if (hdev) 382e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko hci_dev_put(hdev); 383e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 384e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko a2mp_send(mgr, A2MP_CREATEPHYSLINK_RSP, hdr->ident, sizeof(rsp), 385e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko &rsp); 386e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 387e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko skb_pull(skb, le16_to_cpu(hdr->len)); 388e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko return 0; 389e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko} 390e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 3916113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenkostatic int a2mp_discphyslink_req(struct amp_mgr *mgr, struct sk_buff *skb, 3926113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko struct a2mp_cmd *hdr) 3936113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko{ 3946113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko struct a2mp_physlink_req *req = (void *) skb->data; 3956113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko struct a2mp_physlink_rsp rsp; 3966113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko struct hci_dev *hdev; 397cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko struct hci_conn *hcon; 3986113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 3996113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko if (le16_to_cpu(hdr->len) < sizeof(*req)) 4006113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko return -EINVAL; 4016113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 4026113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko BT_DBG("local_id %d remote_id %d", req->local_id, req->remote_id); 4036113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 4046113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko rsp.local_id = req->remote_id; 4056113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko rsp.remote_id = req->local_id; 4066113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko rsp.status = A2MP_STATUS_SUCCESS; 4076113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 408cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko hdev = hci_dev_get(req->remote_id); 4096113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko if (!hdev) { 4106113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko rsp.status = A2MP_STATUS_INVALID_CTRL_ID; 4116113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko goto send_rsp; 4126113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko } 4136113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 414cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko hcon = hci_conn_hash_lookup_ba(hdev, AMP_LINK, mgr->l2cap_conn->dst); 415cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko if (!hcon) { 416cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko BT_ERR("No phys link exist"); 417cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko rsp.status = A2MP_STATUS_NO_PHYSICAL_LINK_EXISTS; 418cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko goto clean; 419cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko } 420cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko 4216113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko /* TODO Disconnect Phys Link here */ 4226113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 423cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenkoclean: 4246113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko hci_dev_put(hdev); 4256113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 4266113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenkosend_rsp: 4276113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko a2mp_send(mgr, A2MP_DISCONNPHYSLINK_RSP, hdr->ident, sizeof(rsp), &rsp); 4286113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 4296113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko skb_pull(skb, sizeof(*req)); 4306113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko return 0; 4316113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko} 4326113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 433f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenkostatic inline int a2mp_cmd_rsp(struct amp_mgr *mgr, struct sk_buff *skb, 434f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko struct a2mp_cmd *hdr) 435f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko{ 4368e8c7e36fb216d2d072116de3bec6130627ad691Andrei Emeltchenko BT_DBG("ident %d code 0x%2.2x", hdr->ident, hdr->code); 437f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko 438f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko skb_pull(skb, le16_to_cpu(hdr->len)); 439f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko return 0; 440f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko} 441f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko 4426b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko/* Handle A2MP signalling */ 4436b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenkostatic int a2mp_chan_recv_cb(struct l2cap_chan *chan, struct sk_buff *skb) 4446b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko{ 445d9fc1d54f6f8123909cdee4fa98ab1ebf6c8651cAndrei Emeltchenko struct a2mp_cmd *hdr; 4466b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko struct amp_mgr *mgr = chan->data; 4476b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko int err = 0; 4486b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 4496b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko amp_mgr_get(mgr); 4506b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 4516b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko while (skb->len >= sizeof(*hdr)) { 452d9fc1d54f6f8123909cdee4fa98ab1ebf6c8651cAndrei Emeltchenko u16 len; 453d9fc1d54f6f8123909cdee4fa98ab1ebf6c8651cAndrei Emeltchenko 454d9fc1d54f6f8123909cdee4fa98ab1ebf6c8651cAndrei Emeltchenko hdr = (void *) skb->data; 455d9fc1d54f6f8123909cdee4fa98ab1ebf6c8651cAndrei Emeltchenko len = le16_to_cpu(hdr->len); 4566b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 4578e8c7e36fb216d2d072116de3bec6130627ad691Andrei Emeltchenko BT_DBG("code 0x%2.2x id %d len %u", hdr->code, hdr->ident, len); 4586b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 4596b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko skb_pull(skb, sizeof(*hdr)); 4606b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 4616b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko if (len > skb->len || !hdr->ident) { 4626b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko err = -EINVAL; 4636b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko break; 4646b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko } 4656b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 4666b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko mgr->ident = hdr->ident; 4676b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 4686b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko switch (hdr->code) { 4696b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_COMMAND_REJ: 47021dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko a2mp_command_rej(mgr, skb, hdr); 47121dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko break; 47221dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko 4736b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_DISCOVER_REQ: 4748598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko err = a2mp_discover_req(mgr, skb, hdr); 4758598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko break; 4768598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 4776b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_CHANGE_NOTIFY: 478329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko err = a2mp_change_notify(mgr, skb, hdr); 479329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko break; 480329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko 4816b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_GETINFO_REQ: 48247f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko err = a2mp_getinfo_req(mgr, skb, hdr); 48347f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko break; 48447f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko 4856b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_GETAMPASSOC_REQ: 486a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko err = a2mp_getampassoc_req(mgr, skb, hdr); 487a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko break; 488a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko 4896b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_CREATEPHYSLINK_REQ: 490e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko err = a2mp_createphyslink_req(mgr, skb, hdr); 491e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko break; 492e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 4936b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_DISCONNPHYSLINK_REQ: 4946113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko err = a2mp_discphyslink_req(mgr, skb, hdr); 4956113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko break; 4966113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 4976b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_DISCOVER_RSP: 498aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko err = a2mp_discover_rsp(mgr, skb, hdr); 499aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko break; 500aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 5016b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_GETINFO_RSP: 5020d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko err = a2mp_getinfo_rsp(mgr, skb, hdr); 5030d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko break; 5040d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 5050d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko case A2MP_CHANGE_RSP: 5066b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_GETAMPASSOC_RSP: 5076b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_CREATEPHYSLINK_RSP: 5086b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_DISCONNPHYSLINK_RSP: 509f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko err = a2mp_cmd_rsp(mgr, skb, hdr); 510f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko break; 511f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko 5126b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko default: 5136b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko BT_ERR("Unknown A2MP sig cmd 0x%2.2x", hdr->code); 5146b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko err = -EINVAL; 5156b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko break; 5166b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko } 5176b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko } 5186b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 5196b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko if (err) { 5206b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko struct a2mp_cmd_rej rej; 521d9fc1d54f6f8123909cdee4fa98ab1ebf6c8651cAndrei Emeltchenko 5226b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko rej.reason = __constant_cpu_to_le16(0); 523d9fc1d54f6f8123909cdee4fa98ab1ebf6c8651cAndrei Emeltchenko hdr = (void *) skb->data; 5246b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 5256b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko BT_DBG("Send A2MP Rej: cmd 0x%2.2x err %d", hdr->code, err); 5266b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 5276b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko a2mp_send(mgr, A2MP_COMMAND_REJ, hdr->ident, sizeof(rej), 5286b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko &rej); 5296b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko } 5306b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 5316b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko /* Always free skb and return success error code to prevent 5326b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko from sending L2CAP Disconnect over A2MP channel */ 5336b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko kfree_skb(skb); 5346b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 5356b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko amp_mgr_put(mgr); 5366b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 5376b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko return 0; 5386b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko} 5396b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 54046d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenkostatic void a2mp_chan_close_cb(struct l2cap_chan *chan) 54146d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko{ 5424af66c691f4e5c2db9bb00793669a548e9db1974Jaganath Kanakkassery l2cap_chan_put(chan); 54346d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko} 54446d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 54546d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenkostatic void a2mp_chan_state_change_cb(struct l2cap_chan *chan, int state) 54646d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko{ 54746d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko struct amp_mgr *mgr = chan->data; 54846d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 54946d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko if (!mgr) 55046d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko return; 55146d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 55246d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko BT_DBG("chan %p state %s", chan, state_to_string(state)); 55346d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 55446d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko chan->state = state; 55546d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 55646d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko switch (state) { 55746d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko case BT_CLOSED: 55846d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko if (mgr) 55946d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko amp_mgr_put(mgr); 56046d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko break; 56146d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko } 56246d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko} 56346d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 56446d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenkostatic struct sk_buff *a2mp_chan_alloc_skb_cb(struct l2cap_chan *chan, 56546d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko unsigned long len, int nb) 56646d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko{ 56746d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko return bt_skb_alloc(len, GFP_KERNEL); 56846d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko} 56946d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 570466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenkostatic struct l2cap_ops a2mp_chan_ops = { 571466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko .name = "L2CAP A2MP channel", 5726b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko .recv = a2mp_chan_recv_cb, 57346d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko .close = a2mp_chan_close_cb, 57446d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko .state_change = a2mp_chan_state_change_cb, 57546d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko .alloc_skb = a2mp_chan_alloc_skb_cb, 57646d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 57746d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko /* Not implemented for A2MP */ 5787e1af8a3a51dbf5dc7392fb294a0830f7e853aa8Gustavo Padovan .new_connection = l2cap_chan_no_new_connection, 5797e1af8a3a51dbf5dc7392fb294a0830f7e853aa8Gustavo Padovan .teardown = l2cap_chan_no_teardown, 5807e1af8a3a51dbf5dc7392fb294a0830f7e853aa8Gustavo Padovan .ready = l2cap_chan_no_ready, 581466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko}; 582466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 583466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenkostatic struct l2cap_chan *a2mp_chan_open(struct l2cap_conn *conn) 584466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko{ 585466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko struct l2cap_chan *chan; 586466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko int err; 587466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 588466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan = l2cap_chan_create(); 589466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko if (!chan) 590466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko return NULL; 591466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 592466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko BT_DBG("chan %p", chan); 593466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 594416fa7527d6bf658e5517ea36d2de9270be2c11eAndrei Emeltchenko chan->chan_type = L2CAP_CHAN_CONN_FIX_A2MP; 595466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->flush_to = L2CAP_DEFAULT_FLUSH_TO; 596466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 597466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->ops = &a2mp_chan_ops; 598466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 599466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko l2cap_chan_set_defaults(chan); 600466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->remote_max_tx = chan->max_tx; 601466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->remote_tx_win = chan->tx_win; 602466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 603466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->retrans_timeout = L2CAP_DEFAULT_RETRANS_TO; 604466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->monitor_timeout = L2CAP_DEFAULT_MONITOR_TO; 605466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 606466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko skb_queue_head_init(&chan->tx_q); 607466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 608466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->mode = L2CAP_MODE_ERTM; 609466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 610466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko err = l2cap_ertm_init(chan); 611466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko if (err < 0) { 612466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko l2cap_chan_del(chan, 0); 613466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko return NULL; 614466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko } 615466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 616466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->conf_state = 0; 617466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 618466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko l2cap_chan_add(conn, chan); 619466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 620466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->remote_mps = chan->omtu; 621466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->mps = chan->omtu; 622466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 623466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->state = BT_CONNECTED; 624466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 625466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko return chan; 626466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko} 6279740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 6289740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko/* AMP Manager functions */ 6299740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenkovoid amp_mgr_get(struct amp_mgr *mgr) 6309740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko{ 631a0dfe0ab6bf194805ce9d6a2dc81efab7a4a7fdaAndrei Emeltchenko BT_DBG("mgr %p orig refcnt %d", mgr, atomic_read(&mgr->kref.refcount)); 6329740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 6339740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko kref_get(&mgr->kref); 6349740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko} 6359740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 6369740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenkostatic void amp_mgr_destroy(struct kref *kref) 6379740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko{ 6389740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko struct amp_mgr *mgr = container_of(kref, struct amp_mgr, kref); 6399740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 6409740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko BT_DBG("mgr %p", mgr); 6419740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 642f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko mutex_lock(&_mgr_list_lock); 643f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko list_del(&mgr->list); 644f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko mutex_unlock(&_mgr_list_lock); 645f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko 64652c0d6e56b634b195e377192182391d526cdd5e4Andrei Emeltchenko amp_ctrl_list_flush(mgr); 6479740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko kfree(mgr); 6489740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko} 6499740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 6509740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenkoint amp_mgr_put(struct amp_mgr *mgr) 6519740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko{ 652a0dfe0ab6bf194805ce9d6a2dc81efab7a4a7fdaAndrei Emeltchenko BT_DBG("mgr %p orig refcnt %d", mgr, atomic_read(&mgr->kref.refcount)); 6539740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 6549740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko return kref_put(&mgr->kref, &_mgr_destroy); 6559740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko} 6569740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 6579740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenkostatic struct amp_mgr *amp_mgr_create(struct l2cap_conn *conn) 6589740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko{ 6599740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko struct amp_mgr *mgr; 6609740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko struct l2cap_chan *chan; 6619740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 6629740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko mgr = kzalloc(sizeof(*mgr), GFP_KERNEL); 6639740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko if (!mgr) 6649740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko return NULL; 6659740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 6669740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko BT_DBG("conn %p mgr %p", conn, mgr); 6679740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 6689740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko mgr->l2cap_conn = conn; 6699740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 6709740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko chan = a2mp_chan_open(conn); 6719740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko if (!chan) { 6729740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko kfree(mgr); 6739740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko return NULL; 6749740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko } 6759740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 6769740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko mgr->a2mp_chan = chan; 6779740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko chan->data = mgr; 6789740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 6799740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko conn->hcon->amp_mgr = mgr; 6809740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 6819740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko kref_init(&mgr->kref); 6829740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 68352c0d6e56b634b195e377192182391d526cdd5e4Andrei Emeltchenko /* Remote AMP ctrl list initialization */ 68452c0d6e56b634b195e377192182391d526cdd5e4Andrei Emeltchenko INIT_LIST_HEAD(&mgr->amp_ctrls); 68552c0d6e56b634b195e377192182391d526cdd5e4Andrei Emeltchenko mutex_init(&mgr->amp_ctrls_lock); 68652c0d6e56b634b195e377192182391d526cdd5e4Andrei Emeltchenko 687f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko mutex_lock(&_mgr_list_lock); 688f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko list_add(&mgr->list, &_mgr_list); 689f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko mutex_unlock(&_mgr_list_lock); 690f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko 6919740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko return mgr; 6929740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko} 69397e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko 69497e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenkostruct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn, 69597e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko struct sk_buff *skb) 69697e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko{ 69797e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko struct amp_mgr *mgr; 69897e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko 69997e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko mgr = amp_mgr_create(conn); 70097e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko if (!mgr) { 70197e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko BT_ERR("Could not create AMP manager"); 70297e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko return NULL; 70397e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko } 70497e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko 70597e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko BT_DBG("mgr: %p chan %p", mgr, mgr->a2mp_chan); 70697e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko 70797e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko return mgr->a2mp_chan; 70897e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko} 709f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko 710f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenkostruct amp_mgr *amp_mgr_lookup_by_state(u8 state) 711f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko{ 712f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko struct amp_mgr *mgr; 713f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko 714f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko mutex_lock(&_mgr_list_lock); 715f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko list_for_each_entry(mgr, &_mgr_list, list) { 716f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko if (mgr->state == state) { 717f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko amp_mgr_get(mgr); 718f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko mutex_unlock(&_mgr_list_lock); 719f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko return mgr; 720f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko } 721f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko } 722f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko mutex_unlock(&_mgr_list_lock); 723f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko 724f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko return NULL; 725f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko} 7268e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 7278e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenkovoid a2mp_send_getinfo_rsp(struct hci_dev *hdev) 7288e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko{ 7298e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko struct amp_mgr *mgr; 7308e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko struct a2mp_info_rsp rsp; 7318e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 7328e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_INFO); 7338e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko if (!mgr) 7348e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko return; 7358e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 7368e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko BT_DBG("%s mgr %p", hdev->name, mgr); 7378e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 7388e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.id = hdev->id; 7398e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.status = A2MP_STATUS_INVALID_CTRL_ID; 7408e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 7418e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko if (hdev->amp_type != HCI_BREDR) { 7428e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.status = 0; 7438e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.total_bw = cpu_to_le32(hdev->amp_total_bw); 7448e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.max_bw = cpu_to_le32(hdev->amp_max_bw); 7458e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.min_latency = cpu_to_le32(hdev->amp_min_latency); 7468e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.pal_cap = cpu_to_le16(hdev->amp_pal_cap); 7478e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.assoc_size = cpu_to_le16(hdev->amp_assoc_size); 7488e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko } 7498e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 7508e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko a2mp_send(mgr, A2MP_GETINFO_RSP, mgr->ident, sizeof(rsp), &rsp); 7518e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko amp_mgr_put(mgr); 7528e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko} 753903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 754903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenkovoid a2mp_send_getampassoc_rsp(struct hci_dev *hdev, u8 status) 755903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko{ 756903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko struct amp_mgr *mgr; 757903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko struct amp_assoc *loc_assoc = &hdev->loc_assoc; 758903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko struct a2mp_amp_assoc_rsp *rsp; 759903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko size_t len; 760903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 761903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC); 762903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko if (!mgr) 763903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko return; 764903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 765903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko BT_DBG("%s mgr %p", hdev->name, mgr); 766903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 767903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko len = sizeof(struct a2mp_amp_assoc_rsp) + loc_assoc->len; 768903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko rsp = kzalloc(len, GFP_KERNEL); 769903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko if (!rsp) { 770903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko amp_mgr_put(mgr); 771903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko return; 772903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko } 773903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 774903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko rsp->id = hdev->id; 775903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 776903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko if (status) { 777903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko rsp->status = A2MP_STATUS_INVALID_CTRL_ID; 778903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko } else { 779903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko rsp->status = A2MP_STATUS_SUCCESS; 780903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko memcpy(rsp->amp_assoc, loc_assoc->data, loc_assoc->len); 781903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko } 782903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 783903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko a2mp_send(mgr, A2MP_GETAMPASSOC_RSP, mgr->ident, len, rsp); 784903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko amp_mgr_put(mgr); 785903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko kfree(rsp); 786903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko} 787