a2mp.c revision 2766be48a7181d7f2a84831ca7e7be248fb6fdb5
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; 1832766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko bool found = false; 184aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 185aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko if (len < sizeof(*rsp)) 186aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko return -EINVAL; 187aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 188aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko len -= sizeof(*rsp); 189aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko skb_pull(skb, sizeof(*rsp)); 190aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 191aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko ext_feat = le16_to_cpu(rsp->ext_feat); 192aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 193aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko BT_DBG("mtu %d efm 0x%4.4x", le16_to_cpu(rsp->mtu), ext_feat); 194aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 195aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko /* check that packet is not broken for now */ 196aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko while (ext_feat & A2MP_FEAT_EXT) { 197aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko if (len < sizeof(ext_feat)) 198aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko return -EINVAL; 199aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 200aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko ext_feat = get_unaligned_le16(skb->data); 201aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko BT_DBG("efm 0x%4.4x", ext_feat); 202aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko len -= sizeof(ext_feat); 203aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko skb_pull(skb, sizeof(ext_feat)); 204aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko } 205aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 206aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko cl = (void *) skb->data; 207aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko while (len >= sizeof(*cl)) { 208aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko BT_DBG("Remote AMP id %d type %d status %d", cl->id, cl->type, 209aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko cl->status); 210aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 211aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko if (cl->id != HCI_BREDR_ID && cl->type == HCI_AMP) { 212aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko struct a2mp_info_req req; 213aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 2142766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko found = true; 215aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko req.id = cl->id; 216aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko a2mp_send(mgr, A2MP_GETINFO_REQ, __next_ident(mgr), 217aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko sizeof(req), &req); 218aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko } 219aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 220aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko len -= sizeof(*cl); 221aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko cl = (void *) skb_pull(skb, sizeof(*cl)); 222aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko } 223aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 2242766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko /* Fall back to L2CAP init sequence */ 2252766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko if (!found) { 2262766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko struct l2cap_conn *conn = mgr->l2cap_conn; 2272766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko struct l2cap_chan *chan; 2282766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko 2292766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko mutex_lock(&conn->chan_lock); 2302766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko 2312766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko list_for_each_entry(chan, &conn->chan_l, list) { 2322766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko 2332766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko BT_DBG("chan %p state %s", chan, 2342766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko state_to_string(chan->state)); 2352766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko 2362766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko if (chan->chan_type == L2CAP_CHAN_CONN_FIX_A2MP) 2372766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko continue; 2382766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko 2392766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko l2cap_chan_lock(chan); 2402766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko 2412766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko if (chan->state == BT_CONNECT) 2422766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko l2cap_send_conn_req(chan); 2432766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko 2442766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko l2cap_chan_unlock(chan); 2452766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko } 2462766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko 2472766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko mutex_unlock(&conn->chan_lock); 2482766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko } 2492766be48a7181d7f2a84831ca7e7be248fb6fdb5Andrei Emeltchenko 250aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko return 0; 251aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko} 252aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 253329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenkostatic int a2mp_change_notify(struct amp_mgr *mgr, struct sk_buff *skb, 254329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko struct a2mp_cmd *hdr) 255329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko{ 256329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko struct a2mp_cl *cl = (void *) skb->data; 257329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko 258329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko while (skb->len >= sizeof(*cl)) { 259329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko BT_DBG("Controller id %d type %d status %d", cl->id, cl->type, 260329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko cl->status); 261329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko cl = (struct a2mp_cl *) skb_pull(skb, sizeof(*cl)); 262329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko } 263329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko 264329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko /* TODO send A2MP_CHANGE_RSP */ 265329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko 266329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko return 0; 267329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko} 268329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko 26947f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenkostatic int a2mp_getinfo_req(struct amp_mgr *mgr, struct sk_buff *skb, 27047f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko struct a2mp_cmd *hdr) 27147f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko{ 27247f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko struct a2mp_info_req *req = (void *) skb->data; 27347f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko struct hci_dev *hdev; 27447f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko 27547f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko if (le16_to_cpu(hdr->len) < sizeof(*req)) 27647f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko return -EINVAL; 27747f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko 27847f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko BT_DBG("id %d", req->id); 27947f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko 28047f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko hdev = hci_dev_get(req->id); 2818e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko if (!hdev) { 2828e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko struct a2mp_info_rsp rsp; 2838e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 2848e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.id = req->id; 2858e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.status = A2MP_STATUS_INVALID_CTRL_ID; 2868e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 2878e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko a2mp_send(mgr, A2MP_GETINFO_RSP, hdr->ident, sizeof(rsp), 2888e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko &rsp); 28947f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko } 29047f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko 2918e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko if (hdev->dev_type != HCI_BREDR) { 2928e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko mgr->state = READ_LOC_AMP_INFO; 2938e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); 2948e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko } 29547f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko 2968e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko hci_dev_put(hdev); 29747f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko 29847f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko skb_pull(skb, sizeof(*req)); 29947f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko return 0; 30047f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko} 30147f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko 3020d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenkostatic int a2mp_getinfo_rsp(struct amp_mgr *mgr, struct sk_buff *skb, 3030d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko struct a2mp_cmd *hdr) 3040d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko{ 3050d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko struct a2mp_info_rsp *rsp = (struct a2mp_info_rsp *) skb->data; 3060d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko struct a2mp_amp_assoc_req req; 3070d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko struct amp_ctrl *ctrl; 3080d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 3090d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko if (le16_to_cpu(hdr->len) < sizeof(*rsp)) 3100d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko return -EINVAL; 3110d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 3120d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko BT_DBG("id %d status 0x%2.2x", rsp->id, rsp->status); 3130d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 3140d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko if (rsp->status) 3150d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko return -EINVAL; 3160d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 3170d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko ctrl = amp_ctrl_add(mgr); 3180d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko if (!ctrl) 3190d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko return -ENOMEM; 3200d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 3210d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko ctrl->id = rsp->id; 3220d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 3230d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko req.id = rsp->id; 3240d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko a2mp_send(mgr, A2MP_GETAMPASSOC_REQ, __next_ident(mgr), sizeof(req), 3250d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko &req); 3260d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 3270d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko skb_pull(skb, sizeof(*rsp)); 3280d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko return 0; 3290d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko} 3300d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 331a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenkostatic int a2mp_getampassoc_req(struct amp_mgr *mgr, struct sk_buff *skb, 332a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko struct a2mp_cmd *hdr) 333a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko{ 334a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko struct a2mp_amp_assoc_req *req = (void *) skb->data; 335a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko struct hci_dev *hdev; 336903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko struct amp_mgr *tmp; 337a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko 338a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko if (le16_to_cpu(hdr->len) < sizeof(*req)) 339a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko return -EINVAL; 340a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko 341a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko BT_DBG("id %d", req->id); 342a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko 343903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko /* Make sure that other request is not processed */ 344903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko tmp = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC); 345903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 346a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko hdev = hci_dev_get(req->id); 347903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko if (!hdev || hdev->amp_type == HCI_BREDR || tmp) { 348a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko struct a2mp_amp_assoc_rsp rsp; 349a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko rsp.id = req->id; 350903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 351903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko if (tmp) { 352903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko rsp.status = A2MP_STATUS_COLLISION_OCCURED; 353903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko amp_mgr_put(tmp); 354903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko } else { 355903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko rsp.status = A2MP_STATUS_INVALID_CTRL_ID; 356903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko } 357a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko 358a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko a2mp_send(mgr, A2MP_GETAMPASSOC_RSP, hdr->ident, sizeof(rsp), 359a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko &rsp); 360903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 361903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko goto done; 362a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko } 363a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko 364903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko amp_read_loc_assoc(hdev, mgr); 365a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko 366903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenkodone: 367a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko if (hdev) 368a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko hci_dev_put(hdev); 369a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko 370a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko skb_pull(skb, sizeof(*req)); 371a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko return 0; 372a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko} 373a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko 3749a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenkostatic int a2mp_getampassoc_rsp(struct amp_mgr *mgr, struct sk_buff *skb, 3759a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko struct a2mp_cmd *hdr) 3769a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko{ 3779a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko struct a2mp_amp_assoc_rsp *rsp = (void *) skb->data; 3789a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko u16 len = le16_to_cpu(hdr->len); 3799a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko struct hci_dev *hdev; 3809a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko struct amp_ctrl *ctrl; 3819a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko struct hci_conn *hcon; 3829a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 3839a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko if (len < sizeof(*rsp)) 3849a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko return -EINVAL; 3859a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 3869a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko BT_DBG("id %d status 0x%2.2x assoc len %u", rsp->id, rsp->status, 3879a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko len - sizeof(*rsp)); 3889a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 3899a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko if (rsp->status) 3909a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko return -EINVAL; 3919a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 3929a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko /* Save remote ASSOC data */ 3939a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko ctrl = amp_ctrl_lookup(mgr, rsp->id); 3949a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko if (ctrl) { 3959a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko u8 *assoc, assoc_len = len - sizeof(*rsp); 3969a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 3979a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko assoc = kzalloc(assoc_len, GFP_KERNEL); 3989a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko if (!assoc) { 3999a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko amp_ctrl_put(ctrl); 4009a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko return -ENOMEM; 4019a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko } 4029a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 4039a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko memcpy(assoc, rsp->amp_assoc, assoc_len); 4049a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko ctrl->assoc = assoc; 4059a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko ctrl->assoc_len = assoc_len; 4069a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko ctrl->assoc_rem_len = assoc_len; 4079a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko ctrl->assoc_len_so_far = 0; 4089a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 4099a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko amp_ctrl_put(ctrl); 4109a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko } 4119a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 4129a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko /* Create Phys Link */ 4139a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko hdev = hci_dev_get(rsp->id); 4149a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko if (!hdev) 4159a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko return -EINVAL; 4169a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 4179a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko hcon = phylink_add(hdev, mgr, rsp->id); 4189a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko if (!hcon) 4199a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko goto done; 4209a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 4219a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko BT_DBG("Created hcon %p: loc:%d -> rem:%d", hcon, hdev->id, rsp->id); 4229a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 423a02226d6ff5098e6b97590cc55aabe7faf0860edAndrei Emeltchenko amp_create_phylink(hdev, mgr, hcon); 424a02226d6ff5098e6b97590cc55aabe7faf0860edAndrei Emeltchenko 4259a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenkodone: 4269a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko hci_dev_put(hdev); 4279a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko skb_pull(skb, len); 4289a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko return 0; 4299a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko} 4309a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 431e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenkostatic int a2mp_createphyslink_req(struct amp_mgr *mgr, struct sk_buff *skb, 432e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko struct a2mp_cmd *hdr) 433e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko{ 434e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko struct a2mp_physlink_req *req = (void *) skb->data; 435e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 436e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko struct a2mp_physlink_rsp rsp; 437e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko struct hci_dev *hdev; 438cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko struct hci_conn *hcon; 439e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 440e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko if (le16_to_cpu(hdr->len) < sizeof(*req)) 441e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko return -EINVAL; 442e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 443e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko BT_DBG("local_id %d, remote_id %d", req->local_id, req->remote_id); 444e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 445e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko rsp.local_id = req->remote_id; 446e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko rsp.remote_id = req->local_id; 447e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 448e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko hdev = hci_dev_get(req->remote_id); 449e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko if (!hdev || hdev->amp_type != HCI_AMP) { 450e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko rsp.status = A2MP_STATUS_INVALID_CTRL_ID; 451e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko goto send_rsp; 452e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko } 453e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 454e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko /* TODO process physlink create */ 455e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 456cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko hcon = phylink_add(hdev, mgr, req->local_id); 457cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko if (hcon) { 458cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko BT_DBG("hcon %p", hcon); 459cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko 460cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko rsp.status = A2MP_STATUS_SUCCESS; 461cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko } else { 462cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko rsp.status = A2MP_STATUS_UNABLE_START_LINK_CREATION; 463cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko } 464e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 465e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenkosend_rsp: 466e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko if (hdev) 467e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko hci_dev_put(hdev); 468e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 469e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko a2mp_send(mgr, A2MP_CREATEPHYSLINK_RSP, hdr->ident, sizeof(rsp), 470e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko &rsp); 471e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 472e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko skb_pull(skb, le16_to_cpu(hdr->len)); 473e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko return 0; 474e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko} 475e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 4766113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenkostatic int a2mp_discphyslink_req(struct amp_mgr *mgr, struct sk_buff *skb, 4776113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko struct a2mp_cmd *hdr) 4786113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko{ 4796113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko struct a2mp_physlink_req *req = (void *) skb->data; 4806113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko struct a2mp_physlink_rsp rsp; 4816113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko struct hci_dev *hdev; 482cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko struct hci_conn *hcon; 4836113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 4846113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko if (le16_to_cpu(hdr->len) < sizeof(*req)) 4856113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko return -EINVAL; 4866113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 4876113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko BT_DBG("local_id %d remote_id %d", req->local_id, req->remote_id); 4886113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 4896113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko rsp.local_id = req->remote_id; 4906113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko rsp.remote_id = req->local_id; 4916113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko rsp.status = A2MP_STATUS_SUCCESS; 4926113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 493cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko hdev = hci_dev_get(req->remote_id); 4946113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko if (!hdev) { 4956113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko rsp.status = A2MP_STATUS_INVALID_CTRL_ID; 4966113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko goto send_rsp; 4976113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko } 4986113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 499cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko hcon = hci_conn_hash_lookup_ba(hdev, AMP_LINK, mgr->l2cap_conn->dst); 500cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko if (!hcon) { 501cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko BT_ERR("No phys link exist"); 502cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko rsp.status = A2MP_STATUS_NO_PHYSICAL_LINK_EXISTS; 503cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko goto clean; 504cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko } 505cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko 5066113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko /* TODO Disconnect Phys Link here */ 5076113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 508cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenkoclean: 5096113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko hci_dev_put(hdev); 5106113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 5116113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenkosend_rsp: 5126113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko a2mp_send(mgr, A2MP_DISCONNPHYSLINK_RSP, hdr->ident, sizeof(rsp), &rsp); 5136113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 5146113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko skb_pull(skb, sizeof(*req)); 5156113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko return 0; 5166113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko} 5176113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 518f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenkostatic inline int a2mp_cmd_rsp(struct amp_mgr *mgr, struct sk_buff *skb, 519f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko struct a2mp_cmd *hdr) 520f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko{ 5218e8c7e36fb216d2d072116de3bec6130627ad691Andrei Emeltchenko BT_DBG("ident %d code 0x%2.2x", hdr->ident, hdr->code); 522f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko 523f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko skb_pull(skb, le16_to_cpu(hdr->len)); 524f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko return 0; 525f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko} 526f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko 5276b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko/* Handle A2MP signalling */ 5286b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenkostatic int a2mp_chan_recv_cb(struct l2cap_chan *chan, struct sk_buff *skb) 5296b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko{ 530d9fc1d54f6f8123909cdee4fa98ab1ebf6c8651cAndrei Emeltchenko struct a2mp_cmd *hdr; 5316b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko struct amp_mgr *mgr = chan->data; 5326b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko int err = 0; 5336b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 5346b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko amp_mgr_get(mgr); 5356b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 5366b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko while (skb->len >= sizeof(*hdr)) { 537d9fc1d54f6f8123909cdee4fa98ab1ebf6c8651cAndrei Emeltchenko u16 len; 538d9fc1d54f6f8123909cdee4fa98ab1ebf6c8651cAndrei Emeltchenko 539d9fc1d54f6f8123909cdee4fa98ab1ebf6c8651cAndrei Emeltchenko hdr = (void *) skb->data; 540d9fc1d54f6f8123909cdee4fa98ab1ebf6c8651cAndrei Emeltchenko len = le16_to_cpu(hdr->len); 5416b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 5428e8c7e36fb216d2d072116de3bec6130627ad691Andrei Emeltchenko BT_DBG("code 0x%2.2x id %d len %u", hdr->code, hdr->ident, len); 5436b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 5446b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko skb_pull(skb, sizeof(*hdr)); 5456b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 5466b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko if (len > skb->len || !hdr->ident) { 5476b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko err = -EINVAL; 5486b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko break; 5496b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko } 5506b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 5516b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko mgr->ident = hdr->ident; 5526b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 5536b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko switch (hdr->code) { 5546b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_COMMAND_REJ: 55521dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko a2mp_command_rej(mgr, skb, hdr); 55621dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko break; 55721dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko 5586b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_DISCOVER_REQ: 5598598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko err = a2mp_discover_req(mgr, skb, hdr); 5608598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko break; 5618598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 5626b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_CHANGE_NOTIFY: 563329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko err = a2mp_change_notify(mgr, skb, hdr); 564329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko break; 565329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko 5666b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_GETINFO_REQ: 56747f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko err = a2mp_getinfo_req(mgr, skb, hdr); 56847f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko break; 56947f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko 5706b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_GETAMPASSOC_REQ: 571a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko err = a2mp_getampassoc_req(mgr, skb, hdr); 572a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko break; 573a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko 5746b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_CREATEPHYSLINK_REQ: 575e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko err = a2mp_createphyslink_req(mgr, skb, hdr); 576e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko break; 577e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 5786b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_DISCONNPHYSLINK_REQ: 5796113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko err = a2mp_discphyslink_req(mgr, skb, hdr); 5806113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko break; 5816113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 5826b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_DISCOVER_RSP: 583aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko err = a2mp_discover_rsp(mgr, skb, hdr); 584aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko break; 585aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 5866b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_GETINFO_RSP: 5870d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko err = a2mp_getinfo_rsp(mgr, skb, hdr); 5880d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko break; 5890d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 5906b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_GETAMPASSOC_RSP: 5919a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko err = a2mp_getampassoc_rsp(mgr, skb, hdr); 5929a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko break; 5939a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 5949a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko case A2MP_CHANGE_RSP: 5956b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_CREATEPHYSLINK_RSP: 5966b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_DISCONNPHYSLINK_RSP: 597f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko err = a2mp_cmd_rsp(mgr, skb, hdr); 598f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko break; 599f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko 6006b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko default: 6016b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko BT_ERR("Unknown A2MP sig cmd 0x%2.2x", hdr->code); 6026b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko err = -EINVAL; 6036b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko break; 6046b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko } 6056b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko } 6066b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 6076b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko if (err) { 6086b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko struct a2mp_cmd_rej rej; 609d9fc1d54f6f8123909cdee4fa98ab1ebf6c8651cAndrei Emeltchenko 6106b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko rej.reason = __constant_cpu_to_le16(0); 611d9fc1d54f6f8123909cdee4fa98ab1ebf6c8651cAndrei Emeltchenko hdr = (void *) skb->data; 6126b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 6136b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko BT_DBG("Send A2MP Rej: cmd 0x%2.2x err %d", hdr->code, err); 6146b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 6156b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko a2mp_send(mgr, A2MP_COMMAND_REJ, hdr->ident, sizeof(rej), 6166b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko &rej); 6176b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko } 6186b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 6196b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko /* Always free skb and return success error code to prevent 6206b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko from sending L2CAP Disconnect over A2MP channel */ 6216b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko kfree_skb(skb); 6226b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 6236b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko amp_mgr_put(mgr); 6246b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 6256b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko return 0; 6266b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko} 6276b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 62846d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenkostatic void a2mp_chan_close_cb(struct l2cap_chan *chan) 62946d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko{ 6304af66c691f4e5c2db9bb00793669a548e9db1974Jaganath Kanakkassery l2cap_chan_put(chan); 63146d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko} 63246d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 63346d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenkostatic void a2mp_chan_state_change_cb(struct l2cap_chan *chan, int state) 63446d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko{ 63546d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko struct amp_mgr *mgr = chan->data; 63646d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 63746d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko if (!mgr) 63846d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko return; 63946d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 64046d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko BT_DBG("chan %p state %s", chan, state_to_string(state)); 64146d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 64246d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko chan->state = state; 64346d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 64446d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko switch (state) { 64546d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko case BT_CLOSED: 64646d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko if (mgr) 64746d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko amp_mgr_put(mgr); 64846d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko break; 64946d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko } 65046d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko} 65146d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 65246d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenkostatic struct sk_buff *a2mp_chan_alloc_skb_cb(struct l2cap_chan *chan, 65346d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko unsigned long len, int nb) 65446d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko{ 65546d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko return bt_skb_alloc(len, GFP_KERNEL); 65646d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko} 65746d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 658466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenkostatic struct l2cap_ops a2mp_chan_ops = { 659466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko .name = "L2CAP A2MP channel", 6606b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko .recv = a2mp_chan_recv_cb, 66146d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko .close = a2mp_chan_close_cb, 66246d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko .state_change = a2mp_chan_state_change_cb, 66346d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko .alloc_skb = a2mp_chan_alloc_skb_cb, 66446d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 66546d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko /* Not implemented for A2MP */ 6667e1af8a3a51dbf5dc7392fb294a0830f7e853aa8Gustavo Padovan .new_connection = l2cap_chan_no_new_connection, 6677e1af8a3a51dbf5dc7392fb294a0830f7e853aa8Gustavo Padovan .teardown = l2cap_chan_no_teardown, 6687e1af8a3a51dbf5dc7392fb294a0830f7e853aa8Gustavo Padovan .ready = l2cap_chan_no_ready, 669466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko}; 670466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 67193c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenkostatic struct l2cap_chan *a2mp_chan_open(struct l2cap_conn *conn, bool locked) 672466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko{ 673466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko struct l2cap_chan *chan; 674466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko int err; 675466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 676466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan = l2cap_chan_create(); 677466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko if (!chan) 678466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko return NULL; 679466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 680466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko BT_DBG("chan %p", chan); 681466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 682416fa7527d6bf658e5517ea36d2de9270be2c11eAndrei Emeltchenko chan->chan_type = L2CAP_CHAN_CONN_FIX_A2MP; 683466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->flush_to = L2CAP_DEFAULT_FLUSH_TO; 684466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 685466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->ops = &a2mp_chan_ops; 686466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 687466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko l2cap_chan_set_defaults(chan); 688466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->remote_max_tx = chan->max_tx; 689466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->remote_tx_win = chan->tx_win; 690466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 691466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->retrans_timeout = L2CAP_DEFAULT_RETRANS_TO; 692466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->monitor_timeout = L2CAP_DEFAULT_MONITOR_TO; 693466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 694466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko skb_queue_head_init(&chan->tx_q); 695466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 696466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->mode = L2CAP_MODE_ERTM; 697466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 698466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko err = l2cap_ertm_init(chan); 699466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko if (err < 0) { 700466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko l2cap_chan_del(chan, 0); 701466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko return NULL; 702466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko } 703466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 704466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->conf_state = 0; 705466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 70693c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko if (locked) 70793c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko __l2cap_chan_add(conn, chan); 70893c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko else 70993c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko l2cap_chan_add(conn, chan); 710466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 711466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->remote_mps = chan->omtu; 712466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->mps = chan->omtu; 713466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 714466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->state = BT_CONNECTED; 715466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 716466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko return chan; 717466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko} 7189740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 7199740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko/* AMP Manager functions */ 7209740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenkovoid amp_mgr_get(struct amp_mgr *mgr) 7219740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko{ 722a0dfe0ab6bf194805ce9d6a2dc81efab7a4a7fdaAndrei Emeltchenko BT_DBG("mgr %p orig refcnt %d", mgr, atomic_read(&mgr->kref.refcount)); 7239740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 7249740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko kref_get(&mgr->kref); 7259740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko} 7269740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 7279740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenkostatic void amp_mgr_destroy(struct kref *kref) 7289740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko{ 7299740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko struct amp_mgr *mgr = container_of(kref, struct amp_mgr, kref); 7309740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 7319740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko BT_DBG("mgr %p", mgr); 7329740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 733f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko mutex_lock(&_mgr_list_lock); 734f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko list_del(&mgr->list); 735f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko mutex_unlock(&_mgr_list_lock); 736f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko 73752c0d6e56b634b195e377192182391d526cdd5e4Andrei Emeltchenko amp_ctrl_list_flush(mgr); 7389740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko kfree(mgr); 7399740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko} 7409740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 7419740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenkoint amp_mgr_put(struct amp_mgr *mgr) 7429740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko{ 743a0dfe0ab6bf194805ce9d6a2dc81efab7a4a7fdaAndrei Emeltchenko BT_DBG("mgr %p orig refcnt %d", mgr, atomic_read(&mgr->kref.refcount)); 7449740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 7459740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko return kref_put(&mgr->kref, &_mgr_destroy); 7469740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko} 7479740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 74893c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenkostatic struct amp_mgr *amp_mgr_create(struct l2cap_conn *conn, bool locked) 7499740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko{ 7509740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko struct amp_mgr *mgr; 7519740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko struct l2cap_chan *chan; 7529740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 7539740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko mgr = kzalloc(sizeof(*mgr), GFP_KERNEL); 7549740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko if (!mgr) 7559740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko return NULL; 7569740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 7579740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko BT_DBG("conn %p mgr %p", conn, mgr); 7589740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 7599740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko mgr->l2cap_conn = conn; 7609740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 76193c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko chan = a2mp_chan_open(conn, locked); 7629740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko if (!chan) { 7639740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko kfree(mgr); 7649740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko return NULL; 7659740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko } 7669740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 7679740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko mgr->a2mp_chan = chan; 7689740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko chan->data = mgr; 7699740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 7709740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko conn->hcon->amp_mgr = mgr; 7719740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 7729740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko kref_init(&mgr->kref); 7739740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 77452c0d6e56b634b195e377192182391d526cdd5e4Andrei Emeltchenko /* Remote AMP ctrl list initialization */ 77552c0d6e56b634b195e377192182391d526cdd5e4Andrei Emeltchenko INIT_LIST_HEAD(&mgr->amp_ctrls); 77652c0d6e56b634b195e377192182391d526cdd5e4Andrei Emeltchenko mutex_init(&mgr->amp_ctrls_lock); 77752c0d6e56b634b195e377192182391d526cdd5e4Andrei Emeltchenko 778f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko mutex_lock(&_mgr_list_lock); 779f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko list_add(&mgr->list, &_mgr_list); 780f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko mutex_unlock(&_mgr_list_lock); 781f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko 7829740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko return mgr; 7839740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko} 78497e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko 78597e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenkostruct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn, 78697e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko struct sk_buff *skb) 78797e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko{ 78897e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko struct amp_mgr *mgr; 78997e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko 79093c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko mgr = amp_mgr_create(conn, false); 79197e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko if (!mgr) { 79297e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko BT_ERR("Could not create AMP manager"); 79397e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko return NULL; 79497e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko } 79597e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko 79697e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko BT_DBG("mgr: %p chan %p", mgr, mgr->a2mp_chan); 79797e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko 79897e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko return mgr->a2mp_chan; 79997e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko} 800f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko 801f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenkostruct amp_mgr *amp_mgr_lookup_by_state(u8 state) 802f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko{ 803f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko struct amp_mgr *mgr; 804f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko 805f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko mutex_lock(&_mgr_list_lock); 806f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko list_for_each_entry(mgr, &_mgr_list, list) { 807f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko if (mgr->state == state) { 808f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko amp_mgr_get(mgr); 809f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko mutex_unlock(&_mgr_list_lock); 810f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko return mgr; 811f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko } 812f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko } 813f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko mutex_unlock(&_mgr_list_lock); 814f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko 815f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko return NULL; 816f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko} 8178e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 8188e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenkovoid a2mp_send_getinfo_rsp(struct hci_dev *hdev) 8198e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko{ 8208e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko struct amp_mgr *mgr; 8218e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko struct a2mp_info_rsp rsp; 8228e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 8238e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_INFO); 8248e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko if (!mgr) 8258e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko return; 8268e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 8278e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko BT_DBG("%s mgr %p", hdev->name, mgr); 8288e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 8298e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.id = hdev->id; 8308e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.status = A2MP_STATUS_INVALID_CTRL_ID; 8318e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 8328e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko if (hdev->amp_type != HCI_BREDR) { 8338e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.status = 0; 8348e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.total_bw = cpu_to_le32(hdev->amp_total_bw); 8358e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.max_bw = cpu_to_le32(hdev->amp_max_bw); 8368e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.min_latency = cpu_to_le32(hdev->amp_min_latency); 8378e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.pal_cap = cpu_to_le16(hdev->amp_pal_cap); 8388e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.assoc_size = cpu_to_le16(hdev->amp_assoc_size); 8398e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko } 8408e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 8418e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko a2mp_send(mgr, A2MP_GETINFO_RSP, mgr->ident, sizeof(rsp), &rsp); 8428e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko amp_mgr_put(mgr); 8438e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko} 844903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 845903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenkovoid a2mp_send_getampassoc_rsp(struct hci_dev *hdev, u8 status) 846903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko{ 847903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko struct amp_mgr *mgr; 848903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko struct amp_assoc *loc_assoc = &hdev->loc_assoc; 849903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko struct a2mp_amp_assoc_rsp *rsp; 850903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko size_t len; 851903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 852903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC); 853903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko if (!mgr) 854903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko return; 855903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 856903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko BT_DBG("%s mgr %p", hdev->name, mgr); 857903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 858903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko len = sizeof(struct a2mp_amp_assoc_rsp) + loc_assoc->len; 859903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko rsp = kzalloc(len, GFP_KERNEL); 860903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko if (!rsp) { 861903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko amp_mgr_put(mgr); 862903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko return; 863903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko } 864903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 865903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko rsp->id = hdev->id; 866903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 867903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko if (status) { 868903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko rsp->status = A2MP_STATUS_INVALID_CTRL_ID; 869903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko } else { 870903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko rsp->status = A2MP_STATUS_SUCCESS; 871903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko memcpy(rsp->amp_assoc, loc_assoc->data, loc_assoc->len); 872903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko } 873903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 874903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko a2mp_send(mgr, A2MP_GETAMPASSOC_RSP, mgr->ident, len, rsp); 875903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko amp_mgr_put(mgr); 876903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko kfree(rsp); 877903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko} 87893c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko 87993c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenkovoid a2mp_discover_amp(struct l2cap_chan *chan) 88093c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko{ 88193c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko struct l2cap_conn *conn = chan->conn; 88293c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko struct amp_mgr *mgr = conn->hcon->amp_mgr; 88393c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko struct a2mp_discov_req req; 88493c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko 88593c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko BT_DBG("chan %p conn %p mgr %p", chan, conn, mgr); 88693c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko 88793c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko if (!mgr) { 88893c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko mgr = amp_mgr_create(conn, true); 88993c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko if (!mgr) 89093c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko return; 89193c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko } 89293c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko 89393c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko mgr->bredr_chan = chan; 89493c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko 89593c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko req.mtu = cpu_to_le16(L2CAP_A2MP_DEFAULT_MTU); 89693c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko req.ext_feat = 0; 89793c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko a2mp_send(mgr, A2MP_DISCOVER_REQ, 1, sizeof(req), &req); 89893c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko} 899