a2mp.c revision a0c234fe8972aa6a5afe2db6c27a3f5d5fbd88e7
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 709495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenkou8 __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); 281bc8dce4f7b4908bac69acac34d19b4234ba19ceeAndrei Emeltchenko if (!hdev || hdev->dev_type != HCI_AMP) { 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 290bc8dce4f7b4908bac69acac34d19b4234ba19ceeAndrei Emeltchenko goto done; 2918e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko } 29247f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko 293bc8dce4f7b4908bac69acac34d19b4234ba19ceeAndrei Emeltchenko mgr->state = READ_LOC_AMP_INFO; 294bc8dce4f7b4908bac69acac34d19b4234ba19ceeAndrei Emeltchenko hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); 295bc8dce4f7b4908bac69acac34d19b4234ba19ceeAndrei Emeltchenko 296bc8dce4f7b4908bac69acac34d19b4234ba19ceeAndrei Emeltchenkodone: 297bc8dce4f7b4908bac69acac34d19b4234ba19ceeAndrei Emeltchenko if (hdev) 298bc8dce4f7b4908bac69acac34d19b4234ba19ceeAndrei Emeltchenko hci_dev_put(hdev); 29947f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko 30047f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko skb_pull(skb, sizeof(*req)); 30147f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko return 0; 30247f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko} 30347f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko 3040d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenkostatic int a2mp_getinfo_rsp(struct amp_mgr *mgr, struct sk_buff *skb, 3050d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko struct a2mp_cmd *hdr) 3060d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko{ 3070d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko struct a2mp_info_rsp *rsp = (struct a2mp_info_rsp *) skb->data; 3080d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko struct a2mp_amp_assoc_req req; 3090d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko struct amp_ctrl *ctrl; 3100d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 3110d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko if (le16_to_cpu(hdr->len) < sizeof(*rsp)) 3120d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko return -EINVAL; 3130d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 3140d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko BT_DBG("id %d status 0x%2.2x", rsp->id, rsp->status); 3150d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 3160d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko if (rsp->status) 3170d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko return -EINVAL; 3180d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 319fa4ebc66c432d0e0ec947cb754d4144c4a681f28Andrei Emeltchenko ctrl = amp_ctrl_add(mgr, rsp->id); 3200d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko if (!ctrl) 3210d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko return -ENOMEM; 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; 38213465c0aeb9c56a4e4799f25aeff41d05f8a3fabAndrei Emeltchenko size_t assoc_len; 3839a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 3849a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko if (len < sizeof(*rsp)) 3859a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko return -EINVAL; 3869a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 38713465c0aeb9c56a4e4799f25aeff41d05f8a3fabAndrei Emeltchenko assoc_len = len - sizeof(*rsp); 38813465c0aeb9c56a4e4799f25aeff41d05f8a3fabAndrei Emeltchenko 38913465c0aeb9c56a4e4799f25aeff41d05f8a3fabAndrei Emeltchenko BT_DBG("id %d status 0x%2.2x assoc len %zu", rsp->id, rsp->status, 39013465c0aeb9c56a4e4799f25aeff41d05f8a3fabAndrei Emeltchenko assoc_len); 3919a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 3929a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko if (rsp->status) 3939a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko return -EINVAL; 3949a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 3959a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko /* Save remote ASSOC data */ 3969a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko ctrl = amp_ctrl_lookup(mgr, rsp->id); 3979a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko if (ctrl) { 39813465c0aeb9c56a4e4799f25aeff41d05f8a3fabAndrei Emeltchenko u8 *assoc; 3999a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 4009a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko assoc = kzalloc(assoc_len, GFP_KERNEL); 4019a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko if (!assoc) { 4029a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko amp_ctrl_put(ctrl); 4039a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko return -ENOMEM; 4049a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko } 4059a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 4069a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko memcpy(assoc, rsp->amp_assoc, assoc_len); 4079a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko ctrl->assoc = assoc; 4089a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko ctrl->assoc_len = assoc_len; 4099a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko ctrl->assoc_rem_len = assoc_len; 4109a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko ctrl->assoc_len_so_far = 0; 4119a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 4129a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko amp_ctrl_put(ctrl); 4139a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko } 4149a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 4159a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko /* Create Phys Link */ 4169a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko hdev = hci_dev_get(rsp->id); 4179a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko if (!hdev) 4189a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko return -EINVAL; 4199a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 420a0c234fe8972aa6a5afe2db6c27a3f5d5fbd88e7Andrei Emeltchenko hcon = phylink_add(hdev, mgr, rsp->id, true); 4219a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko if (!hcon) 4229a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko goto done; 4239a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 4249a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko BT_DBG("Created hcon %p: loc:%d -> rem:%d", hcon, hdev->id, rsp->id); 4259a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 4269495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko mgr->bredr_chan->ctrl_id = rsp->id; 4279495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko 428a02226d6ff5098e6b97590cc55aabe7faf0860edAndrei Emeltchenko amp_create_phylink(hdev, mgr, hcon); 429a02226d6ff5098e6b97590cc55aabe7faf0860edAndrei Emeltchenko 4309a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenkodone: 4319a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko hci_dev_put(hdev); 4329a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko skb_pull(skb, len); 4339a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko return 0; 4349a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko} 4359a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 436e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenkostatic int a2mp_createphyslink_req(struct amp_mgr *mgr, struct sk_buff *skb, 437e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko struct a2mp_cmd *hdr) 438e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko{ 439e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko struct a2mp_physlink_req *req = (void *) skb->data; 440e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 441e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko struct a2mp_physlink_rsp rsp; 442e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko struct hci_dev *hdev; 443cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko struct hci_conn *hcon; 4440b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko struct amp_ctrl *ctrl; 445e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 446e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko if (le16_to_cpu(hdr->len) < sizeof(*req)) 447e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko return -EINVAL; 448e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 449e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko BT_DBG("local_id %d, remote_id %d", req->local_id, req->remote_id); 450e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 451e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko rsp.local_id = req->remote_id; 452e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko rsp.remote_id = req->local_id; 453e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 454e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko hdev = hci_dev_get(req->remote_id); 455e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko if (!hdev || hdev->amp_type != HCI_AMP) { 456e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko rsp.status = A2MP_STATUS_INVALID_CTRL_ID; 457e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko goto send_rsp; 458e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko } 459e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 4600b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko ctrl = amp_ctrl_lookup(mgr, rsp.remote_id); 4610b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko if (!ctrl) { 462fa4ebc66c432d0e0ec947cb754d4144c4a681f28Andrei Emeltchenko ctrl = amp_ctrl_add(mgr, rsp.remote_id); 4630b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko if (ctrl) { 4640b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko amp_ctrl_get(ctrl); 4650b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko } else { 4660b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko rsp.status = A2MP_STATUS_UNABLE_START_LINK_CREATION; 4670b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko goto send_rsp; 4680b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko } 4690b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko } 4700b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko 4710b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko if (ctrl) { 47213465c0aeb9c56a4e4799f25aeff41d05f8a3fabAndrei Emeltchenko size_t assoc_len = le16_to_cpu(hdr->len) - sizeof(*req); 47313465c0aeb9c56a4e4799f25aeff41d05f8a3fabAndrei Emeltchenko u8 *assoc; 4740b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko 4750b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko assoc = kzalloc(assoc_len, GFP_KERNEL); 4760b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko if (!assoc) { 4770b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko amp_ctrl_put(ctrl); 4780b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko return -ENOMEM; 4790b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko } 4800b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko 4810b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko memcpy(assoc, req->amp_assoc, assoc_len); 4820b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko ctrl->assoc = assoc; 4830b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko ctrl->assoc_len = assoc_len; 4840b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko ctrl->assoc_rem_len = assoc_len; 4850b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko ctrl->assoc_len_so_far = 0; 4860b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko 4870b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko amp_ctrl_put(ctrl); 4880b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko } 4890b26ab9dce74f8ac77d7eef0d683ab1d527e45b1Andrei Emeltchenko 490a0c234fe8972aa6a5afe2db6c27a3f5d5fbd88e7Andrei Emeltchenko hcon = phylink_add(hdev, mgr, req->local_id, false); 491cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko if (hcon) { 492dffa387110025801862d7ad09f4e850d06ff55a9Andrei Emeltchenko amp_accept_phylink(hdev, mgr, hcon); 493cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko rsp.status = A2MP_STATUS_SUCCESS; 494cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko } else { 495cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko rsp.status = A2MP_STATUS_UNABLE_START_LINK_CREATION; 496cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko } 497e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 498e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenkosend_rsp: 499e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko if (hdev) 500e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko hci_dev_put(hdev); 501e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 502e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko a2mp_send(mgr, A2MP_CREATEPHYSLINK_RSP, hdr->ident, sizeof(rsp), 503e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko &rsp); 504e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 505e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko skb_pull(skb, le16_to_cpu(hdr->len)); 506e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko return 0; 507e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko} 508e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 5096113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenkostatic int a2mp_discphyslink_req(struct amp_mgr *mgr, struct sk_buff *skb, 5106113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko struct a2mp_cmd *hdr) 5116113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko{ 5126113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko struct a2mp_physlink_req *req = (void *) skb->data; 5136113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko struct a2mp_physlink_rsp rsp; 5146113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko struct hci_dev *hdev; 515cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko struct hci_conn *hcon; 5166113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 5176113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko if (le16_to_cpu(hdr->len) < sizeof(*req)) 5186113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko return -EINVAL; 5196113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 5206113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko BT_DBG("local_id %d remote_id %d", req->local_id, req->remote_id); 5216113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 5226113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko rsp.local_id = req->remote_id; 5236113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko rsp.remote_id = req->local_id; 5246113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko rsp.status = A2MP_STATUS_SUCCESS; 5256113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 526cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko hdev = hci_dev_get(req->remote_id); 5276113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko if (!hdev) { 5286113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko rsp.status = A2MP_STATUS_INVALID_CTRL_ID; 5296113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko goto send_rsp; 5306113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko } 5316113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 532cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko hcon = hci_conn_hash_lookup_ba(hdev, AMP_LINK, mgr->l2cap_conn->dst); 533cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko if (!hcon) { 534cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko BT_ERR("No phys link exist"); 535cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko rsp.status = A2MP_STATUS_NO_PHYSICAL_LINK_EXISTS; 536cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko goto clean; 537cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko } 538cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenko 5396113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko /* TODO Disconnect Phys Link here */ 5406113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 541cb8488c0b60a947c0ef4a1a94573a7fefd3f20b4Andrei Emeltchenkoclean: 5426113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko hci_dev_put(hdev); 5436113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 5446113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenkosend_rsp: 5456113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko a2mp_send(mgr, A2MP_DISCONNPHYSLINK_RSP, hdr->ident, sizeof(rsp), &rsp); 5466113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 5476113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko skb_pull(skb, sizeof(*req)); 5486113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko return 0; 5496113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko} 5506113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 551f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenkostatic inline int a2mp_cmd_rsp(struct amp_mgr *mgr, struct sk_buff *skb, 552f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko struct a2mp_cmd *hdr) 553f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko{ 5548e8c7e36fb216d2d072116de3bec6130627ad691Andrei Emeltchenko BT_DBG("ident %d code 0x%2.2x", hdr->ident, hdr->code); 555f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko 556f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko skb_pull(skb, le16_to_cpu(hdr->len)); 557f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko return 0; 558f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko} 559f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko 5606b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko/* Handle A2MP signalling */ 5616b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenkostatic int a2mp_chan_recv_cb(struct l2cap_chan *chan, struct sk_buff *skb) 5626b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko{ 563d9fc1d54f6f8123909cdee4fa98ab1ebf6c8651cAndrei Emeltchenko struct a2mp_cmd *hdr; 5646b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko struct amp_mgr *mgr = chan->data; 5656b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko int err = 0; 5666b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 5676b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko amp_mgr_get(mgr); 5686b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 5696b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko while (skb->len >= sizeof(*hdr)) { 570d9fc1d54f6f8123909cdee4fa98ab1ebf6c8651cAndrei Emeltchenko u16 len; 571d9fc1d54f6f8123909cdee4fa98ab1ebf6c8651cAndrei Emeltchenko 572d9fc1d54f6f8123909cdee4fa98ab1ebf6c8651cAndrei Emeltchenko hdr = (void *) skb->data; 573d9fc1d54f6f8123909cdee4fa98ab1ebf6c8651cAndrei Emeltchenko len = le16_to_cpu(hdr->len); 5746b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 5758e8c7e36fb216d2d072116de3bec6130627ad691Andrei Emeltchenko BT_DBG("code 0x%2.2x id %d len %u", hdr->code, hdr->ident, len); 5766b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 5776b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko skb_pull(skb, sizeof(*hdr)); 5786b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 5796b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko if (len > skb->len || !hdr->ident) { 5806b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko err = -EINVAL; 5816b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko break; 5826b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko } 5836b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 5846b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko mgr->ident = hdr->ident; 5856b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 5866b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko switch (hdr->code) { 5876b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_COMMAND_REJ: 58821dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko a2mp_command_rej(mgr, skb, hdr); 58921dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko break; 59021dbd2ce35f6d2b4aa5363be6c839cdb50644e11Andrei Emeltchenko 5916b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_DISCOVER_REQ: 5928598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko err = a2mp_discover_req(mgr, skb, hdr); 5938598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko break; 5948598d064cbf22b2d84c7cd8a9fcb97138baffe3fAndrei Emeltchenko 5956b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_CHANGE_NOTIFY: 596329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko err = a2mp_change_notify(mgr, skb, hdr); 597329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko break; 598329d81af29344a2ad2f9595310be74644421797aAndrei Emeltchenko 5996b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_GETINFO_REQ: 60047f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko err = a2mp_getinfo_req(mgr, skb, hdr); 60147f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko break; 60247f2d97d38816aaca94c9b6961c6eff1cfcd0bd6Andrei Emeltchenko 6036b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_GETAMPASSOC_REQ: 604a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko err = a2mp_getampassoc_req(mgr, skb, hdr); 605a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko break; 606a28381dc9ca3e54b0678e2cd7c68c1afb2d7cc76Andrei Emeltchenko 6076b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_CREATEPHYSLINK_REQ: 608e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko err = a2mp_createphyslink_req(mgr, skb, hdr); 609e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko break; 610e072f5dab22e7bf0a10daf854acc0fc271396ee7Andrei Emeltchenko 6116b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_DISCONNPHYSLINK_REQ: 6126113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko err = a2mp_discphyslink_req(mgr, skb, hdr); 6136113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko break; 6146113f84fc1a8962aed25f54a115b196e9aea151fAndrei Emeltchenko 6156b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_DISCOVER_RSP: 616aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko err = a2mp_discover_rsp(mgr, skb, hdr); 617aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko break; 618aa09537d80bf7e6282103618eb496f03e76f2953Andrei Emeltchenko 6196b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_GETINFO_RSP: 6200d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko err = a2mp_getinfo_rsp(mgr, skb, hdr); 6210d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko break; 6220d868de9d8760c76f6d4c6c777935c05ef272caaAndrei Emeltchenko 6236b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_GETAMPASSOC_RSP: 6249a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko err = a2mp_getampassoc_rsp(mgr, skb, hdr); 6259a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko break; 6269a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko 6279a5e94dbb4aa306742a47cbbcb0a44d4fc77a9e4Andrei Emeltchenko case A2MP_CHANGE_RSP: 6286b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_CREATEPHYSLINK_RSP: 6296b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko case A2MP_DISCONNPHYSLINK_RSP: 630f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko err = a2mp_cmd_rsp(mgr, skb, hdr); 631f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko break; 632f6410a849b76f56c78d989786eb427b85a559b9fAndrei Emeltchenko 6336b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko default: 6346b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko BT_ERR("Unknown A2MP sig cmd 0x%2.2x", hdr->code); 6356b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko err = -EINVAL; 6366b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko break; 6376b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko } 6386b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko } 6396b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 6406b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko if (err) { 6416b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko struct a2mp_cmd_rej rej; 642d9fc1d54f6f8123909cdee4fa98ab1ebf6c8651cAndrei Emeltchenko 6436b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko rej.reason = __constant_cpu_to_le16(0); 644d9fc1d54f6f8123909cdee4fa98ab1ebf6c8651cAndrei Emeltchenko hdr = (void *) skb->data; 6456b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 6466b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko BT_DBG("Send A2MP Rej: cmd 0x%2.2x err %d", hdr->code, err); 6476b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 6486b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko a2mp_send(mgr, A2MP_COMMAND_REJ, hdr->ident, sizeof(rej), 6496b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko &rej); 6506b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko } 6516b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 6526b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko /* Always free skb and return success error code to prevent 6536b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko from sending L2CAP Disconnect over A2MP channel */ 6546b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko kfree_skb(skb); 6556b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 6566b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko amp_mgr_put(mgr); 6576b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 6586b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko return 0; 6596b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko} 6606b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko 66146d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenkostatic void a2mp_chan_close_cb(struct l2cap_chan *chan) 66246d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko{ 6634af66c691f4e5c2db9bb00793669a548e9db1974Jaganath Kanakkassery l2cap_chan_put(chan); 66446d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko} 66546d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 66646d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenkostatic void a2mp_chan_state_change_cb(struct l2cap_chan *chan, int state) 66746d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko{ 66846d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko struct amp_mgr *mgr = chan->data; 66946d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 67046d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko if (!mgr) 67146d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko return; 67246d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 67346d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko BT_DBG("chan %p state %s", chan, state_to_string(state)); 67446d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 67546d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko chan->state = state; 67646d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 67746d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko switch (state) { 67846d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko case BT_CLOSED: 67946d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko if (mgr) 68046d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko amp_mgr_put(mgr); 68146d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko break; 68246d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko } 68346d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko} 68446d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 68546d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenkostatic struct sk_buff *a2mp_chan_alloc_skb_cb(struct l2cap_chan *chan, 68646d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko unsigned long len, int nb) 68746d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko{ 68846d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko return bt_skb_alloc(len, GFP_KERNEL); 68946d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko} 69046d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 691466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenkostatic struct l2cap_ops a2mp_chan_ops = { 692466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko .name = "L2CAP A2MP channel", 6936b44d9b8d96b37f72ccd7335b32f386a67b7f1f4Andrei Emeltchenko .recv = a2mp_chan_recv_cb, 69446d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko .close = a2mp_chan_close_cb, 69546d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko .state_change = a2mp_chan_state_change_cb, 69646d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko .alloc_skb = a2mp_chan_alloc_skb_cb, 69746d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko 69846d5c9088fbcc8a570bc271f77940973d9cae074Andrei Emeltchenko /* Not implemented for A2MP */ 6997e1af8a3a51dbf5dc7392fb294a0830f7e853aa8Gustavo Padovan .new_connection = l2cap_chan_no_new_connection, 7007e1af8a3a51dbf5dc7392fb294a0830f7e853aa8Gustavo Padovan .teardown = l2cap_chan_no_teardown, 7017e1af8a3a51dbf5dc7392fb294a0830f7e853aa8Gustavo Padovan .ready = l2cap_chan_no_ready, 702466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko}; 703466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 70493c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenkostatic struct l2cap_chan *a2mp_chan_open(struct l2cap_conn *conn, bool locked) 705466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko{ 706466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko struct l2cap_chan *chan; 707466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko int err; 708466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 709466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan = l2cap_chan_create(); 710466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko if (!chan) 711466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko return NULL; 712466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 713466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko BT_DBG("chan %p", chan); 714466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 715416fa7527d6bf658e5517ea36d2de9270be2c11eAndrei Emeltchenko chan->chan_type = L2CAP_CHAN_CONN_FIX_A2MP; 716466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->flush_to = L2CAP_DEFAULT_FLUSH_TO; 717466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 718466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->ops = &a2mp_chan_ops; 719466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 720466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko l2cap_chan_set_defaults(chan); 721466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->remote_max_tx = chan->max_tx; 722466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->remote_tx_win = chan->tx_win; 723466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 724466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->retrans_timeout = L2CAP_DEFAULT_RETRANS_TO; 725466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->monitor_timeout = L2CAP_DEFAULT_MONITOR_TO; 726466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 727466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko skb_queue_head_init(&chan->tx_q); 728466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 729466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->mode = L2CAP_MODE_ERTM; 730466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 731466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko err = l2cap_ertm_init(chan); 732466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko if (err < 0) { 733466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko l2cap_chan_del(chan, 0); 734466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko return NULL; 735466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko } 736466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 737466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->conf_state = 0; 738466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 73993c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko if (locked) 74093c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko __l2cap_chan_add(conn, chan); 74193c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko else 74293c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko l2cap_chan_add(conn, chan); 743466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 744466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->remote_mps = chan->omtu; 745466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->mps = chan->omtu; 746466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 747466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko chan->state = BT_CONNECTED; 748466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko 749466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko return chan; 750466f8004f364e9cb46d9124109972489eccfb404Andrei Emeltchenko} 7519740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 7529740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko/* AMP Manager functions */ 7539740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenkovoid amp_mgr_get(struct amp_mgr *mgr) 7549740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko{ 755a0dfe0ab6bf194805ce9d6a2dc81efab7a4a7fdaAndrei Emeltchenko BT_DBG("mgr %p orig refcnt %d", mgr, atomic_read(&mgr->kref.refcount)); 7569740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 7579740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko kref_get(&mgr->kref); 7589740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko} 7599740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 7609740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenkostatic void amp_mgr_destroy(struct kref *kref) 7619740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko{ 7629740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko struct amp_mgr *mgr = container_of(kref, struct amp_mgr, kref); 7639740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 7649740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko BT_DBG("mgr %p", mgr); 7659740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 766f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko mutex_lock(&_mgr_list_lock); 767f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko list_del(&mgr->list); 768f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko mutex_unlock(&_mgr_list_lock); 769f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko 77052c0d6e56b634b195e377192182391d526cdd5e4Andrei Emeltchenko amp_ctrl_list_flush(mgr); 7719740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko kfree(mgr); 7729740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko} 7739740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 7749740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenkoint amp_mgr_put(struct amp_mgr *mgr) 7759740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko{ 776a0dfe0ab6bf194805ce9d6a2dc81efab7a4a7fdaAndrei Emeltchenko BT_DBG("mgr %p orig refcnt %d", mgr, atomic_read(&mgr->kref.refcount)); 7779740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 7789740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko return kref_put(&mgr->kref, &_mgr_destroy); 7799740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko} 7809740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 78193c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenkostatic struct amp_mgr *amp_mgr_create(struct l2cap_conn *conn, bool locked) 7829740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko{ 7839740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko struct amp_mgr *mgr; 7849740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko struct l2cap_chan *chan; 7859740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 7869740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko mgr = kzalloc(sizeof(*mgr), GFP_KERNEL); 7879740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko if (!mgr) 7889740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko return NULL; 7899740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 7909740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko BT_DBG("conn %p mgr %p", conn, mgr); 7919740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 7929740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko mgr->l2cap_conn = conn; 7939740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 79493c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko chan = a2mp_chan_open(conn, locked); 7959740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko if (!chan) { 7969740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko kfree(mgr); 7979740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko return NULL; 7989740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko } 7999740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 8009740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko mgr->a2mp_chan = chan; 8019740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko chan->data = mgr; 8029740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 8039740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko conn->hcon->amp_mgr = mgr; 8049740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 8059740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko kref_init(&mgr->kref); 8069740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko 80752c0d6e56b634b195e377192182391d526cdd5e4Andrei Emeltchenko /* Remote AMP ctrl list initialization */ 80852c0d6e56b634b195e377192182391d526cdd5e4Andrei Emeltchenko INIT_LIST_HEAD(&mgr->amp_ctrls); 80952c0d6e56b634b195e377192182391d526cdd5e4Andrei Emeltchenko mutex_init(&mgr->amp_ctrls_lock); 81052c0d6e56b634b195e377192182391d526cdd5e4Andrei Emeltchenko 811f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko mutex_lock(&_mgr_list_lock); 812f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko list_add(&mgr->list, &_mgr_list); 813f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko mutex_unlock(&_mgr_list_lock); 814f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko 8159740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko return mgr; 8169740e49d17e55f3832661fd99a8e0a17e921a82eAndrei Emeltchenko} 81797e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko 81897e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenkostruct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn, 81997e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko struct sk_buff *skb) 82097e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko{ 82197e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko struct amp_mgr *mgr; 82297e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko 82393c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko mgr = amp_mgr_create(conn, false); 82497e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko if (!mgr) { 82597e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko BT_ERR("Could not create AMP manager"); 82697e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko return NULL; 82797e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko } 82897e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko 82997e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko BT_DBG("mgr: %p chan %p", mgr, mgr->a2mp_chan); 83097e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko 83197e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko return mgr->a2mp_chan; 83297e8e89d2d8185b7644c9941636d3682eedc517bAndrei Emeltchenko} 833f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko 834f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenkostruct amp_mgr *amp_mgr_lookup_by_state(u8 state) 835f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko{ 836f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko struct amp_mgr *mgr; 837f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko 838f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko mutex_lock(&_mgr_list_lock); 839f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko list_for_each_entry(mgr, &_mgr_list, list) { 840f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko if (mgr->state == state) { 841f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko amp_mgr_get(mgr); 842f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko mutex_unlock(&_mgr_list_lock); 843f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko return mgr; 844f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko } 845f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko } 846f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko mutex_unlock(&_mgr_list_lock); 847f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko 848f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko return NULL; 849f97268fccdd4e76462195216fcab621b8d4a6cd1Andrei Emeltchenko} 8508e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 8518e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenkovoid a2mp_send_getinfo_rsp(struct hci_dev *hdev) 8528e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko{ 8538e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko struct amp_mgr *mgr; 8548e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko struct a2mp_info_rsp rsp; 8558e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 8568e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_INFO); 8578e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko if (!mgr) 8588e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko return; 8598e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 8608e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko BT_DBG("%s mgr %p", hdev->name, mgr); 8618e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 8628e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.id = hdev->id; 8638e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.status = A2MP_STATUS_INVALID_CTRL_ID; 8648e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 8658e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko if (hdev->amp_type != HCI_BREDR) { 8668e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.status = 0; 8678e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.total_bw = cpu_to_le32(hdev->amp_total_bw); 8688e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.max_bw = cpu_to_le32(hdev->amp_max_bw); 8698e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.min_latency = cpu_to_le32(hdev->amp_min_latency); 8708e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.pal_cap = cpu_to_le16(hdev->amp_pal_cap); 8718e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko rsp.assoc_size = cpu_to_le16(hdev->amp_assoc_size); 8728e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko } 8738e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko 8748e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko a2mp_send(mgr, A2MP_GETINFO_RSP, mgr->ident, sizeof(rsp), &rsp); 8758e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko amp_mgr_put(mgr); 8768e2a0d92c56ec6955526a8b60838c9b00f70540dAndrei Emeltchenko} 877903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 878903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenkovoid a2mp_send_getampassoc_rsp(struct hci_dev *hdev, u8 status) 879903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko{ 880903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko struct amp_mgr *mgr; 881903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko struct amp_assoc *loc_assoc = &hdev->loc_assoc; 882903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko struct a2mp_amp_assoc_rsp *rsp; 883903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko size_t len; 884903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 885903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC); 886903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko if (!mgr) 887903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko return; 888903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 889903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko BT_DBG("%s mgr %p", hdev->name, mgr); 890903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 891903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko len = sizeof(struct a2mp_amp_assoc_rsp) + loc_assoc->len; 892903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko rsp = kzalloc(len, GFP_KERNEL); 893903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko if (!rsp) { 894903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko amp_mgr_put(mgr); 895903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko return; 896903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko } 897903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 898903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko rsp->id = hdev->id; 899903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 900903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko if (status) { 901903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko rsp->status = A2MP_STATUS_INVALID_CTRL_ID; 902903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko } else { 903903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko rsp->status = A2MP_STATUS_SUCCESS; 904903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko memcpy(rsp->amp_assoc, loc_assoc->data, loc_assoc->len); 905903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko } 906903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko 907903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko a2mp_send(mgr, A2MP_GETAMPASSOC_RSP, mgr->ident, len, rsp); 908903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko amp_mgr_put(mgr); 909903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko kfree(rsp); 910903e45411099ae8292f5ce637ad0c72f6fef61dbAndrei Emeltchenko} 91193c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko 9129495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenkovoid a2mp_send_create_phy_link_req(struct hci_dev *hdev, u8 status) 9139495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko{ 9149495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko struct amp_mgr *mgr; 9159495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko struct amp_assoc *loc_assoc = &hdev->loc_assoc; 9169495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko struct a2mp_physlink_req *req; 9179495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko struct l2cap_chan *bredr_chan; 9189495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko size_t len; 9199495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko 9209495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko mgr = amp_mgr_lookup_by_state(READ_LOC_AMP_ASSOC_FINAL); 9219495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko if (!mgr) 9229495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko return; 9239495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko 9249495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko len = sizeof(*req) + loc_assoc->len; 9259495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko 9269495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko BT_DBG("%s mgr %p assoc_len %zu", hdev->name, mgr, len); 9279495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko 9289495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko req = kzalloc(len, GFP_KERNEL); 9299495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko if (!req) { 9309495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko amp_mgr_put(mgr); 9319495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko return; 9329495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko } 9339495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko 9349495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko bredr_chan = mgr->bredr_chan; 9359495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko if (!bredr_chan) 9369495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko goto clean; 9379495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko 9389495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko req->local_id = hdev->id; 9399495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko req->remote_id = bredr_chan->ctrl_id; 9409495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko memcpy(req->amp_assoc, loc_assoc->data, loc_assoc->len); 9419495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko 9429495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko a2mp_send(mgr, A2MP_CREATEPHYSLINK_REQ, __next_ident(mgr), len, req); 9439495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko 9449495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenkoclean: 9459495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko amp_mgr_put(mgr); 9469495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko kfree(req); 9479495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko} 9489495b2ee757f7747d7c28f9ba8d7edc53005ec2dAndrei Emeltchenko 94993c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenkovoid a2mp_discover_amp(struct l2cap_chan *chan) 95093c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko{ 95193c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko struct l2cap_conn *conn = chan->conn; 95293c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko struct amp_mgr *mgr = conn->hcon->amp_mgr; 95393c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko struct a2mp_discov_req req; 95493c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko 95593c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko BT_DBG("chan %p conn %p mgr %p", chan, conn, mgr); 95693c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko 95793c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko if (!mgr) { 95893c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko mgr = amp_mgr_create(conn, true); 95993c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko if (!mgr) 96093c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko return; 96193c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko } 96293c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko 96393c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko mgr->bredr_chan = chan; 96493c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko 96593c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko req.mtu = cpu_to_le16(L2CAP_A2MP_DEFAULT_MTU); 96693c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko req.ext_feat = 0; 96793c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko a2mp_send(mgr, A2MP_DISCOVER_REQ, 1, sizeof(req), &req); 96893c3e8f5c9a0e4dc6b6c93108dcf3ec54ab1191aAndrei Emeltchenko} 969