nexmon – Rev 1
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/*
* Copyright (c) 2010 Broadcom Corporation
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/kernel.h>
#include <linux/etherdevice.h>
#include <linux/module.h>
/* NEXMON */
#include <linux/if_arp.h>
#include <linux/netlink.h>
#include <linux/inetdevice.h>
#include <net/cfg80211.h>
#include <net/rtnetlink.h>
#include <net/addrconf.h>
#include <net/ipv6.h>
#include <brcmu_utils.h>
#include <brcmu_wifi.h>
#include "core.h"
#include "bus.h"
#include "debug.h"
#include "fwil_types.h"
#include "p2p.h"
#include "pno.h"
#include "cfg80211.h"
#include "fwil.h"
#include "feature.h"
#include "proto.h"
#include "pcie.h"
#include "common.h"
/* NEXMON */
#include "nexmon_ioctls.h"
#define MAX_WAIT_FOR_8021X_TX msecs_to_jiffies(950)
#define BRCMF_BSSIDX_INVALID -1
/* Nexmon */
#define NETLINK_USER 31
#define NEXUDP_IOCTL 0
#define MONITOR_DISABLED 0
#define MONITOR_IEEE80211 1
#define MONITOR_RADIOTAP 2
#define MONITOR_LOG_ONLY 3
#define MONITOR_DROP_FRM 4
#define MONITOR_IPV4_UDP 5
/*NEXMON*/
static struct netlink_kernel_cfg cfg = {0};
static struct sock *nl_sock = NULL;
static struct net_device *ndev_global = NULL;
struct nexudp_header {
char nex[3];
char type;
int securitycookie;
} __attribute__((packed));
struct nexudp_ioctl_header {
struct nexudp_header nexudphdr;
unsigned int cmd;
unsigned int set;
char payload[1];
} __attribute__((packed));
static void
nexmon_nl_ioctl_handler(struct sk_buff *skb)
{
struct nlmsghdr *nlh = (struct nlmsghdr *) skb->data;
struct nexudp_ioctl_header *frame = (struct nexudp_ioctl_header *) nlmsg_data(nlh);
struct brcmf_if *ifp = netdev_priv(ndev_global);
struct sk_buff *skb_out;
struct nlmsghdr *nlh_tx;
brcmf_err("NEXMON: %s: Enter\n", __FUNCTION__);
brcmf_err("NEXMON: %s: %08x %d %d\n", __FUNCTION__, *(int *) frame->nexudphdr.nex, nlmsg_len(nlh), skb->len);
if (memcmp(frame->nexudphdr.nex, "NEX", 3)) {
brcmf_err("NEXMON: %s: invalid nexudp_ioctl_header\n", __FUNCTION__);
return;
}
if (frame->nexudphdr.type != NEXUDP_IOCTL) {
brcmf_err("NEXMON: %s: invalid frame type\n", __FUNCTION__);
return;
}
if (ifp == NULL) {
brcmf_err("NEXMON: %s: ifp is NULL\n", __FUNCTION__);
return;
}
if (frame->set) {
brcmf_err("NEXMON: %s: calling brcmf_fil_cmd_data_set, cmd: %d\n", __FUNCTION__, frame->cmd);
brcmf_fil_cmd_data_set(ifp, frame->cmd, frame->payload, nlmsg_len(nlh) - sizeof(struct nexudp_ioctl_header) + sizeof(char));
skb_out = nlmsg_new(4, 0);
nlh_tx = nlmsg_put(skb_out, 0, 0, NLMSG_DONE, 4, 0);
NETLINK_CB(skb_out).dst_group = 0; /* not in mcast group */
memcpy(nlmsg_data(nlh_tx), "ACK", 4);
nlmsg_unicast(nl_sock, skb_out, nlh->nlmsg_pid);
} else {
brcmf_err("NEXMON: %s: calling brcmf_fil_cmd_data_get, cmd: %d\n", __FUNCTION__, frame->cmd);
brcmf_fil_cmd_data_get(ifp, frame->cmd, frame->payload, nlmsg_len(nlh) - sizeof(struct nexudp_ioctl_header) + sizeof(char));
skb_out = nlmsg_new(nlmsg_len(nlh), 0);
nlh_tx = nlmsg_put(skb_out, 0, 0, NLMSG_DONE, nlmsg_len(nlh), 0);
NETLINK_CB(skb_out).dst_group = 0; /* not in mcast group */
memcpy(nlmsg_data(nlh_tx), frame, nlmsg_len(nlh));
nlmsg_unicast(nl_sock, skb_out, nlh->nlmsg_pid);
}
brcmf_err("NEXMON: %s: Exit\n", __FUNCTION__);
}
char *brcmf_ifname(struct brcmf_if *ifp)
{
if (!ifp)
return "<if_null>";
if (ifp->ndev)
return ifp->ndev->name;
return "<if_none>";
}
struct brcmf_if *brcmf_get_ifp(struct brcmf_pub *drvr, int ifidx)
{
struct brcmf_if *ifp;
s32 bsscfgidx;
if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
brcmf_err("ifidx %d out of range\n", ifidx);
return NULL;
}
ifp = NULL;
bsscfgidx = drvr->if2bss[ifidx];
if (bsscfgidx >= 0)
ifp = drvr->iflist[bsscfgidx];
return ifp;
}
void brcmf_configure_arp_nd_offload(struct brcmf_if *ifp, bool enable)
{
s32 err;
u32 mode;
if (enable)
mode = BRCMF_ARP_OL_AGENT | BRCMF_ARP_OL_PEER_AUTO_REPLY;
else
mode = 0;
/* Try to set and enable ARP offload feature, this may fail, then it */
/* is simply not supported and err 0 will be returned */
err = brcmf_fil_iovar_int_set(ifp, "arp_ol", mode);
if (err) {
brcmf_dbg(TRACE, "failed to set ARP offload mode to 0x%x, err = %d\n",
mode, err);
err = 0;
} else {
err = brcmf_fil_iovar_int_set(ifp, "arpoe", enable);
if (err) {
brcmf_dbg(TRACE, "failed to configure (%d) ARP offload err = %d\n",
enable, err);
err = 0;
} else
brcmf_dbg(TRACE, "successfully configured (%d) ARP offload to 0x%x\n",
enable, mode);
}
err = brcmf_fil_iovar_int_set(ifp, "ndoe", enable);
if (err)
brcmf_dbg(TRACE, "failed to configure (%d) ND offload err = %d\n",
enable, err);
else
brcmf_dbg(TRACE, "successfully configured (%d) ND offload to 0x%x\n",
enable, mode);
}
static void _brcmf_set_multicast_list(struct work_struct *work)
{
struct brcmf_if *ifp;
struct net_device *ndev;
struct netdev_hw_addr *ha;
u32 cmd_value, cnt;
__le32 cnt_le;
char *buf, *bufp;
u32 buflen;
s32 err;
ifp = container_of(work, struct brcmf_if, multicast_work);
brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
ndev = ifp->ndev;
/* Determine initial value of allmulti flag */
cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
/* Send down the multicast list first. */
cnt = netdev_mc_count(ndev);
buflen = sizeof(cnt) + (cnt * ETH_ALEN);
buf = kmalloc(buflen, GFP_ATOMIC);
if (!buf)
return;
bufp = buf;
cnt_le = cpu_to_le32(cnt);
memcpy(bufp, &cnt_le, sizeof(cnt_le));
bufp += sizeof(cnt_le);
netdev_for_each_mc_addr(ha, ndev) {
if (!cnt)
break;
memcpy(bufp, ha->addr, ETH_ALEN);
bufp += ETH_ALEN;
cnt--;
}
err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen);
if (err < 0) {
brcmf_err("Setting mcast_list failed, %d\n", err);
cmd_value = cnt ? true : cmd_value;
}
kfree(buf);
/*
* Now send the allmulti setting. This is based on the setting in the
* net_device flags, but might be modified above to be turned on if we
* were trying to set some addresses and dongle rejected it...
*/
err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value);
if (err < 0)
brcmf_err("Setting allmulti failed, %d\n", err);
/*Finally, pick up the PROMISC flag */
cmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value);
if (err < 0)
brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n",
err);
brcmf_configure_arp_nd_offload(ifp, !cmd_value);
}
#if IS_ENABLED(CONFIG_IPV6)
static void _brcmf_update_ndtable(struct work_struct *work)
{
struct brcmf_if *ifp;
int i, ret;
ifp = container_of(work, struct brcmf_if, ndoffload_work);
/* clear the table in firmware */
ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip_clear", NULL, 0);
if (ret) {
brcmf_dbg(TRACE, "fail to clear nd ip table err:%d\n", ret);
return;
}
for (i = 0; i < ifp->ipv6addr_idx; i++) {
ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip",
&ifp->ipv6_addr_tbl[i],
sizeof(struct in6_addr));
if (ret)
brcmf_err("add nd ip err %d\n", ret);
}
}
#else
static void _brcmf_update_ndtable(struct work_struct *work)
{
}
#endif
static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
{
struct brcmf_if *ifp = netdev_priv(ndev);
struct sockaddr *sa = (struct sockaddr *)addr;
int err;
brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", sa->sa_data,
ETH_ALEN);
if (err < 0) {
brcmf_err("Setting cur_etheraddr failed, %d\n", err);
} else {
brcmf_dbg(TRACE, "updated to %pM\n", sa->sa_data);
memcpy(ifp->mac_addr, sa->sa_data, ETH_ALEN);
memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
}
return err;
}
static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
{
struct brcmf_if *ifp = netdev_priv(ndev);
schedule_work(&ifp->multicast_work);
}
static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb,
struct net_device *ndev)
{
int ret;
struct brcmf_if *ifp = netdev_priv(ndev);
struct brcmf_pub *drvr = ifp->drvr;
struct ethhdr *eh;
int head_delta;
brcmf_dbg(DATA, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
/* Can the device send data? */
if (drvr->bus_if->state != BRCMF_BUS_UP) {
brcmf_err("xmit rejected state=%d\n", drvr->bus_if->state);
netif_stop_queue(ndev);
dev_kfree_skb(skb);
ret = -ENODEV;
goto done;
}
/* Make sure there's enough writeable headroom */
if (skb_headroom(skb) < drvr->hdrlen || skb_header_cloned(skb)) {
head_delta = max_t(int, drvr->hdrlen - skb_headroom(skb), 0);
brcmf_dbg(INFO, "%s: insufficient headroom (%d)\n",
brcmf_ifname(ifp), head_delta);
atomic_inc(&drvr->bus_if->stats.pktcowed);
ret = pskb_expand_head(skb, ALIGN(head_delta, NET_SKB_PAD), 0,
GFP_ATOMIC);
if (ret < 0) {
brcmf_err("%s: failed to expand headroom\n",
brcmf_ifname(ifp));
atomic_inc(&drvr->bus_if->stats.pktcow_failed);
goto done;
}
}
/* validate length for ether packet */
if (skb->len < sizeof(*eh)) {
ret = -EINVAL;
dev_kfree_skb(skb);
goto done;
}
eh = (struct ethhdr *)(skb->data);
if (eh->h_proto == htons(ETH_P_PAE))
atomic_inc(&ifp->pend_8021x_cnt);
/* determine the priority */
if ((skb->priority == 0) || (skb->priority > 7))
skb->priority = cfg80211_classify8021d(skb, NULL);
ret = brcmf_proto_tx_queue_data(drvr, ifp->ifidx, skb);
if (ret < 0)
brcmf_txfinalize(ifp, skb, false);
done:
if (ret) {
ndev->stats.tx_dropped++;
} else {
ndev->stats.tx_packets++;
ndev->stats.tx_bytes += skb->len;
}
/* Return ok: we always eat the packet */
return NETDEV_TX_OK;
}
void brcmf_txflowblock_if(struct brcmf_if *ifp,
enum brcmf_netif_stop_reason reason, bool state)
{
unsigned long flags;
if (!ifp || !ifp->ndev)
return;
brcmf_dbg(TRACE, "enter: bsscfgidx=%d stop=0x%X reason=%d state=%d\n",
ifp->bsscfgidx, ifp->netif_stop, reason, state);
spin_lock_irqsave(&ifp->netif_stop_lock, flags);
if (state) {
if (!ifp->netif_stop)
netif_stop_queue(ifp->ndev);
ifp->netif_stop |= reason;
} else {
ifp->netif_stop &= ~reason;
if (!ifp->netif_stop)
netif_wake_queue(ifp->ndev);
}
spin_unlock_irqrestore(&ifp->netif_stop_lock, flags);
}
void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb)
{
if (skb->pkt_type == PACKET_MULTICAST)
ifp->ndev->stats.multicast++;
if (!(ifp->ndev->flags & IFF_UP)) {
brcmu_pkt_buf_free_skb(skb);
return;
}
ifp->ndev->stats.rx_bytes += skb->len;
ifp->ndev->stats.rx_packets++;
brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol));
if (in_interrupt())
netif_rx(skb);
else
/* If the receive is not processed inside an ISR,
* the softirqd must be woken explicitly to service
* the NET_RX_SOFTIRQ. This is handled by netif_rx_ni().
*/
netif_rx_ni(skb);
}
static int brcmf_rx_hdrpull(struct brcmf_pub *drvr, struct sk_buff *skb,
struct brcmf_if **ifp)
{
int ret;
/* process and remove protocol-specific header */
ret = brcmf_proto_hdrpull(drvr, true, skb, ifp);
if (ret || !(*ifp) || !(*ifp)->ndev) {
if (ret != -ENODATA && *ifp)
(*ifp)->ndev->stats.rx_errors++;
brcmu_pkt_buf_free_skb(skb);
return -ENODATA;
}
skb->protocol = eth_type_trans(skb, (*ifp)->ndev);
return 0;
}
void brcmf_rx_frame(struct device *dev, struct sk_buff *skb, bool handle_event)
{
struct brcmf_if *ifp;
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_pub *drvr = bus_if->drvr;
brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb);
if (brcmf_rx_hdrpull(drvr, skb, &ifp))
return;
if (brcmf_proto_is_reorder_skb(skb)) {
brcmf_proto_rxreorder(ifp, skb);
} else {
/* Process special event packets */
if (handle_event)
brcmf_fweh_process_skb(ifp->drvr, skb);
brcmf_netif_rx(ifp, skb);
}
}
void brcmf_rx_event(struct device *dev, struct sk_buff *skb)
{
struct brcmf_if *ifp;
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_pub *drvr = bus_if->drvr;
brcmf_dbg(EVENT, "Enter: %s: rxp=%p\n", dev_name(dev), skb);
if (brcmf_rx_hdrpull(drvr, skb, &ifp))
return;
brcmf_fweh_process_skb(ifp->drvr, skb);
brcmu_pkt_buf_free_skb(skb);
}
void brcmf_txfinalize(struct brcmf_if *ifp, struct sk_buff *txp, bool success)
{
struct ethhdr *eh;
u16 type;
eh = (struct ethhdr *)(txp->data);
type = ntohs(eh->h_proto);
if (type == ETH_P_PAE) {
atomic_dec(&ifp->pend_8021x_cnt);
if (waitqueue_active(&ifp->pend_8021x_wait))
wake_up(&ifp->pend_8021x_wait);
}
if (!success)
ifp->ndev->stats.tx_errors++;
brcmu_pkt_buf_free_skb(txp);
}
static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
struct ethtool_drvinfo *info)
{
struct brcmf_if *ifp = netdev_priv(ndev);
struct brcmf_pub *drvr = ifp->drvr;
char drev[BRCMU_DOTREV_LEN] = "n/a";
if (drvr->revinfo.result == 0)
brcmu_dotrev_str(drvr->revinfo.driverrev, drev);
strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
strlcpy(info->version, drev, sizeof(info->version));
strlcpy(info->fw_version, drvr->fwver, sizeof(info->fw_version));
strlcpy(info->bus_info, dev_name(drvr->bus_if->dev),
sizeof(info->bus_info));
}
static const struct ethtool_ops brcmf_ethtool_ops = {
.get_drvinfo = brcmf_ethtool_get_drvinfo,
};
static int brcmf_netdev_stop(struct net_device *ndev)
{
struct brcmf_if *ifp = netdev_priv(ndev);
brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
brcmf_cfg80211_down(ndev);
brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear", NULL, 0);
brcmf_net_setcarrier(ifp, false);
return 0;
}
static int brcmf_netdev_open(struct net_device *ndev)
{
struct brcmf_if *ifp = netdev_priv(ndev);
struct brcmf_pub *drvr = ifp->drvr;
struct brcmf_bus *bus_if = drvr->bus_if;
u32 toe_ol;
brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
/* If bus is not ready, can't continue */
if (bus_if->state != BRCMF_BUS_UP) {
brcmf_err("failed bus is not ready\n");
return -EAGAIN;
}
atomic_set(&ifp->pend_8021x_cnt, 0);
/* Get current TOE mode from dongle */
if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0
&& (toe_ol & TOE_TX_CSUM_OL) != 0)
ndev->features |= NETIF_F_IP_CSUM;
else
ndev->features &= ~NETIF_F_IP_CSUM;
if (brcmf_cfg80211_up(ndev)) {
brcmf_err("failed to bring up cfg80211\n");
return -EIO;
}
/* Clear, carrier, set when connected or AP mode. */
/*NEXMON*/
//netif_carrier_off(ndev);
return 0;
}
static const struct net_device_ops brcmf_netdev_ops_pri = {
.ndo_open = brcmf_netdev_open,
.ndo_stop = brcmf_netdev_stop,
.ndo_start_xmit = brcmf_netdev_start_xmit,
.ndo_set_mac_address = brcmf_netdev_set_mac_address,
.ndo_set_rx_mode = brcmf_netdev_set_multicast_list
};
int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked)
{
struct brcmf_pub *drvr = ifp->drvr;
struct net_device *ndev;
s32 err;
brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx,
ifp->mac_addr);
ndev = ifp->ndev;
/* NEXMON */
ndev_global = ndev;
/* set appropriate operations */
ndev->netdev_ops = &brcmf_netdev_ops_pri;
ndev->needed_headroom += drvr->hdrlen;
ndev->ethtool_ops = &brcmf_ethtool_ops;
/* set the mac address & netns */
memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
dev_net_set(ndev, wiphy_net(cfg_to_wiphy(drvr->config)));
INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);
INIT_WORK(&ifp->ndoffload_work, _brcmf_update_ndtable);
if (rtnl_locked)
err = register_netdevice(ndev);
else
err = register_netdev(ndev);
if (err != 0) {
brcmf_err("couldn't register the net device\n");
goto fail;
}
ndev->priv_destructor = brcmf_cfg80211_free_netdev;
brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
return 0;
fail:
drvr->iflist[ifp->bsscfgidx] = NULL;
ndev->netdev_ops = NULL;
return -EBADE;
}
static void brcmf_net_detach(struct net_device *ndev, bool rtnl_locked)
{
if (ndev->reg_state == NETREG_REGISTERED) {
if (rtnl_locked)
unregister_netdevice(ndev);
else
unregister_netdev(ndev);
} else {
brcmf_cfg80211_free_netdev(ndev);
free_netdev(ndev);
}
}
void brcmf_net_setcarrier(struct brcmf_if *ifp, bool on)
{
struct net_device *ndev;
brcmf_dbg(TRACE, "Enter, bsscfgidx=%d carrier=%d\n", ifp->bsscfgidx,
on);
ndev = ifp->ndev;
brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_DISCONNECTED, !on);
if (on) {
if (!netif_carrier_ok(ndev))
netif_carrier_on(ndev);
} else {
if (netif_carrier_ok(ndev))
netif_carrier_off(ndev);
}
}
static int brcmf_net_p2p_open(struct net_device *ndev)
{
brcmf_dbg(TRACE, "Enter\n");
return brcmf_cfg80211_up(ndev);
}
static int brcmf_net_p2p_stop(struct net_device *ndev)
{
brcmf_dbg(TRACE, "Enter\n");
return brcmf_cfg80211_down(ndev);
}
static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb,
struct net_device *ndev)
{
if (skb)
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
static const struct net_device_ops brcmf_netdev_ops_p2p = {
.ndo_open = brcmf_net_p2p_open,
.ndo_stop = brcmf_net_p2p_stop,
.ndo_start_xmit = brcmf_net_p2p_start_xmit
};
static int brcmf_net_p2p_attach(struct brcmf_if *ifp)
{
struct net_device *ndev;
brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx,
ifp->mac_addr);
ndev = ifp->ndev;
ndev->netdev_ops = &brcmf_netdev_ops_p2p;
/* set the mac address */
memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
if (register_netdev(ndev) != 0) {
brcmf_err("couldn't register the p2p net device\n");
goto fail;
}
brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
return 0;
fail:
ifp->drvr->iflist[ifp->bsscfgidx] = NULL;
ndev->netdev_ops = NULL;
return -EBADE;
}
struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bsscfgidx, s32 ifidx,
bool is_p2pdev, const char *name, u8 *mac_addr)
{
struct brcmf_if *ifp;
struct net_device *ndev;
brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, ifidx);
ifp = drvr->iflist[bsscfgidx];
/*
* Delete the existing interface before overwriting it
* in case we missed the BRCMF_E_IF_DEL event.
*/
if (ifp) {
if (ifidx) {
brcmf_err("ERROR: netdev:%s already exists\n",
ifp->ndev->name);
netif_stop_queue(ifp->ndev);
brcmf_net_detach(ifp->ndev, false);
drvr->iflist[bsscfgidx] = NULL;
} else {
brcmf_dbg(INFO, "netdev:%s ignore IF event\n",
ifp->ndev->name);
return ERR_PTR(-EINVAL);
}
}
if (!drvr->settings->p2p_enable && is_p2pdev) {
/* this is P2P_DEVICE interface */
brcmf_dbg(INFO, "allocate non-netdev interface\n");
ifp = kzalloc(sizeof(*ifp), GFP_KERNEL);
if (!ifp)
return ERR_PTR(-ENOMEM);
} else {
brcmf_dbg(INFO, "allocate netdev interface\n");
/* Allocate netdev, including space for private structure */
ndev = alloc_netdev(sizeof(*ifp), is_p2pdev ? "p2p%d" : name,
NET_NAME_UNKNOWN, ether_setup);
if (!ndev)
return ERR_PTR(-ENOMEM);
ndev->needs_free_netdev = true;
ifp = netdev_priv(ndev);
ifp->ndev = ndev;
/* store mapping ifidx to bsscfgidx */
if (drvr->if2bss[ifidx] == BRCMF_BSSIDX_INVALID)
drvr->if2bss[ifidx] = bsscfgidx;
}
ifp->drvr = drvr;
drvr->iflist[bsscfgidx] = ifp;
ifp->ifidx = ifidx;
ifp->bsscfgidx = bsscfgidx;
init_waitqueue_head(&ifp->pend_8021x_wait);
spin_lock_init(&ifp->netif_stop_lock);
if (mac_addr != NULL)
memcpy(ifp->mac_addr, mac_addr, ETH_ALEN);
brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
current->pid, name, ifp->mac_addr);
return ifp;
}
static void brcmf_del_if(struct brcmf_pub *drvr, s32 bsscfgidx,
bool rtnl_locked)
{
struct brcmf_if *ifp;
ifp = drvr->iflist[bsscfgidx];
drvr->iflist[bsscfgidx] = NULL;
if (!ifp) {
brcmf_err("Null interface, bsscfgidx=%d\n", bsscfgidx);
return;
}
brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx,
ifp->ifidx);
if (drvr->if2bss[ifp->ifidx] == bsscfgidx)
drvr->if2bss[ifp->ifidx] = BRCMF_BSSIDX_INVALID;
if (ifp->ndev) {
if (bsscfgidx == 0) {
if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
rtnl_lock();
brcmf_netdev_stop(ifp->ndev);
rtnl_unlock();
}
} else {
netif_stop_queue(ifp->ndev);
}
if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
cancel_work_sync(&ifp->multicast_work);
cancel_work_sync(&ifp->ndoffload_work);
}
brcmf_net_detach(ifp->ndev, rtnl_locked);
} else {
/* Only p2p device interfaces which get dynamically created
* end up here. In this case the p2p module should be informed
* about the removal of the interface within the firmware. If
* not then p2p commands towards the firmware will cause some
* serious troublesome side effects. The p2p module will clean
* up the ifp if needed.
*/
brcmf_p2p_ifp_removed(ifp, rtnl_locked);
kfree(ifp);
}
}
void brcmf_remove_interface(struct brcmf_if *ifp, bool rtnl_locked)
{
if (!ifp || WARN_ON(ifp->drvr->iflist[ifp->bsscfgidx] != ifp))
return;
brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", ifp->bsscfgidx,
ifp->ifidx);
brcmf_proto_del_if(ifp->drvr, ifp);
brcmf_del_if(ifp->drvr, ifp->bsscfgidx, rtnl_locked);
}
static int brcmf_psm_watchdog_notify(struct brcmf_if *ifp,
const struct brcmf_event_msg *evtmsg,
void *data)
{
int err;
brcmf_dbg(TRACE, "enter: bsscfgidx=%d\n", ifp->bsscfgidx);
brcmf_err("PSM's watchdog has fired!\n");
err = brcmf_debug_create_memdump(ifp->drvr->bus_if, data,
evtmsg->datalen);
if (err)
brcmf_err("Failed to get memory dump, %d\n", err);
return err;
}
#ifdef CONFIG_INET
#define ARPOL_MAX_ENTRIES 8
static int brcmf_inetaddr_changed(struct notifier_block *nb,
unsigned long action, void *data)
{
struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub,
inetaddr_notifier);
struct in_ifaddr *ifa = data;
struct net_device *ndev = ifa->ifa_dev->dev;
struct brcmf_if *ifp;
int idx, i, ret;
u32 val;
__be32 addr_table[ARPOL_MAX_ENTRIES] = {0};
/* Find out if the notification is meant for us */
for (idx = 0; idx < BRCMF_MAX_IFS; idx++) {
ifp = drvr->iflist[idx];
if (ifp && ifp->ndev == ndev)
break;
if (idx == BRCMF_MAX_IFS - 1)
return NOTIFY_DONE;
}
/* check if arp offload is supported */
ret = brcmf_fil_iovar_int_get(ifp, "arpoe", &val);
if (ret)
return NOTIFY_OK;
/* old version only support primary index */
ret = brcmf_fil_iovar_int_get(ifp, "arp_version", &val);
if (ret)
val = 1;
if (val == 1)
ifp = drvr->iflist[0];
/* retrieve the table from firmware */
ret = brcmf_fil_iovar_data_get(ifp, "arp_hostip", addr_table,
sizeof(addr_table));
if (ret) {
brcmf_err("fail to get arp ip table err:%d\n", ret);
return NOTIFY_OK;
}
for (i = 0; i < ARPOL_MAX_ENTRIES; i++)
if (ifa->ifa_address == addr_table[i])
break;
switch (action) {
case NETDEV_UP:
if (i == ARPOL_MAX_ENTRIES) {
brcmf_dbg(TRACE, "add %pI4 to arp table\n",
&ifa->ifa_address);
/* set it directly */
ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip",
&ifa->ifa_address, sizeof(ifa->ifa_address));
if (ret)
brcmf_err("add arp ip err %d\n", ret);
}
break;
case NETDEV_DOWN:
if (i < ARPOL_MAX_ENTRIES) {
addr_table[i] = 0;
brcmf_dbg(TRACE, "remove %pI4 from arp table\n",
&ifa->ifa_address);
/* clear the table in firmware */
ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear",
NULL, 0);
if (ret) {
brcmf_err("fail to clear arp ip table err:%d\n",
ret);
return NOTIFY_OK;
}
for (i = 0; i < ARPOL_MAX_ENTRIES; i++) {
if (addr_table[i] == 0)
continue;
ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip",
&addr_table[i],
sizeof(addr_table[i]));
if (ret)
brcmf_err("add arp ip err %d\n",
ret);
}
}
break;
default:
break;
}
return NOTIFY_OK;
}
#endif
#if IS_ENABLED(CONFIG_IPV6)
static int brcmf_inet6addr_changed(struct notifier_block *nb,
unsigned long action, void *data)
{
struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub,
inet6addr_notifier);
struct inet6_ifaddr *ifa = data;
struct brcmf_if *ifp;
int i;
struct in6_addr *table;
/* Only handle primary interface */
ifp = drvr->iflist[0];
if (!ifp)
return NOTIFY_DONE;
if (ifp->ndev != ifa->idev->dev)
return NOTIFY_DONE;
table = ifp->ipv6_addr_tbl;
for (i = 0; i < NDOL_MAX_ENTRIES; i++)
if (ipv6_addr_equal(&ifa->addr, &table[i]))
break;
switch (action) {
case NETDEV_UP:
if (i == NDOL_MAX_ENTRIES) {
if (ifp->ipv6addr_idx < NDOL_MAX_ENTRIES) {
table[ifp->ipv6addr_idx++] = ifa->addr;
} else {
for (i = 0; i < NDOL_MAX_ENTRIES - 1; i++)
table[i] = table[i + 1];
table[NDOL_MAX_ENTRIES - 1] = ifa->addr;
}
}
break;
case NETDEV_DOWN:
if (i < NDOL_MAX_ENTRIES) {
for (; i < ifp->ipv6addr_idx - 1; i++)
table[i] = table[i + 1];
memset(&table[i], 0, sizeof(table[i]));
ifp->ipv6addr_idx--;
}
break;
default:
break;
}
schedule_work(&ifp->ndoffload_work);
return NOTIFY_OK;
}
#endif
int brcmf_attach(struct device *dev, struct brcmf_mp_device *settings)
{
struct brcmf_pub *drvr = NULL;
int ret = 0;
int i;
brcmf_dbg(TRACE, "Enter\n");
/* Allocate primary brcmf_info */
drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC);
if (!drvr)
return -ENOMEM;
for (i = 0; i < ARRAY_SIZE(drvr->if2bss); i++)
drvr->if2bss[i] = BRCMF_BSSIDX_INVALID;
mutex_init(&drvr->proto_block);
/* Link to bus module */
drvr->hdrlen = 0;
drvr->bus_if = dev_get_drvdata(dev);
drvr->bus_if->drvr = drvr;
drvr->settings = settings;
/* attach debug facilities */
brcmf_debug_attach(drvr);
/* Attach and link in the protocol */
ret = brcmf_proto_attach(drvr);
if (ret != 0) {
brcmf_err("brcmf_prot_attach failed\n");
goto fail;
}
/* Attach to events important for core code */
brcmf_fweh_register(drvr, BRCMF_E_PSM_WATCHDOG,
brcmf_psm_watchdog_notify);
/* attach firmware event handler */
brcmf_fweh_attach(drvr);
return ret;
fail:
brcmf_detach(dev);
return ret;
}
static int brcmf_revinfo_read(struct seq_file *s, void *data)
{
struct brcmf_bus *bus_if = dev_get_drvdata(s->private);
struct brcmf_rev_info *ri = &bus_if->drvr->revinfo;
char drev[BRCMU_DOTREV_LEN];
char brev[BRCMU_BOARDREV_LEN];
seq_printf(s, "vendorid: 0x%04x\n", ri->vendorid);
seq_printf(s, "deviceid: 0x%04x\n", ri->deviceid);
seq_printf(s, "radiorev: %s\n", brcmu_dotrev_str(ri->radiorev, drev));
seq_printf(s, "chipnum: %u (%x)\n", ri->chipnum, ri->chipnum);
seq_printf(s, "chiprev: %u\n", ri->chiprev);
seq_printf(s, "chippkg: %u\n", ri->chippkg);
seq_printf(s, "corerev: %u\n", ri->corerev);
seq_printf(s, "boardid: 0x%04x\n", ri->boardid);
seq_printf(s, "boardvendor: 0x%04x\n", ri->boardvendor);
seq_printf(s, "boardrev: %s\n", brcmu_boardrev_str(ri->boardrev, brev));
seq_printf(s, "driverrev: %s\n", brcmu_dotrev_str(ri->driverrev, drev));
seq_printf(s, "ucoderev: %u\n", ri->ucoderev);
seq_printf(s, "bus: %u\n", ri->bus);
seq_printf(s, "phytype: %u\n", ri->phytype);
seq_printf(s, "phyrev: %u\n", ri->phyrev);
seq_printf(s, "anarev: %u\n", ri->anarev);
seq_printf(s, "nvramrev: %08x\n", ri->nvramrev);
return 0;
}
int brcmf_bus_started(struct device *dev)
{
int ret = -1;
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_pub *drvr = bus_if->drvr;
struct brcmf_if *ifp;
struct brcmf_if *p2p_ifp;
brcmf_dbg(TRACE, "\n");
/* add primary networking interface */
ifp = brcmf_add_if(drvr, 0, 0, false, "wlan%d", NULL);
if (IS_ERR(ifp))
return PTR_ERR(ifp);
p2p_ifp = NULL;
/* signal bus ready */
brcmf_bus_change_state(bus_if, BRCMF_BUS_UP);
/* Bus is ready, do any initialization */
ret = brcmf_c_preinit_dcmds(ifp);
if (ret < 0)
goto fail;
brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read);
/* assure we have chipid before feature attach */
if (!bus_if->chip) {
bus_if->chip = drvr->revinfo.chipnum;
bus_if->chiprev = drvr->revinfo.chiprev;
brcmf_dbg(INFO, "firmware revinfo: chip %x (%d) rev %d\n",
bus_if->chip, bus_if->chip, bus_if->chiprev);
}
brcmf_feat_attach(drvr);
ret = brcmf_proto_init_done(drvr);
if (ret < 0)
goto fail;
brcmf_proto_add_if(drvr, ifp);
drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev,
drvr->settings->p2p_enable);
if (drvr->config == NULL) {
ret = -ENOMEM;
goto fail;
}
ret = brcmf_net_attach(ifp, false);
if ((!ret) && (drvr->settings->p2p_enable)) {
p2p_ifp = drvr->iflist[1];
if (p2p_ifp)
ret = brcmf_net_p2p_attach(p2p_ifp);
}
if (ret)
goto fail;
#ifdef CONFIG_INET
drvr->inetaddr_notifier.notifier_call = brcmf_inetaddr_changed;
ret = register_inetaddr_notifier(&drvr->inetaddr_notifier);
if (ret)
goto fail;
#if IS_ENABLED(CONFIG_IPV6)
drvr->inet6addr_notifier.notifier_call = brcmf_inet6addr_changed;
ret = register_inet6addr_notifier(&drvr->inet6addr_notifier);
if (ret) {
unregister_inetaddr_notifier(&drvr->inetaddr_notifier);
goto fail;
}
#endif
#endif /* CONFIG_INET */
return 0;
fail:
brcmf_err("failed: %d\n", ret);
if (drvr->config) {
brcmf_cfg80211_detach(drvr->config);
drvr->config = NULL;
}
brcmf_net_detach(ifp->ndev, false);
if (p2p_ifp)
brcmf_net_detach(p2p_ifp->ndev, false);
drvr->iflist[0] = NULL;
drvr->iflist[1] = NULL;
if (drvr->settings->ignore_probe_fail)
ret = 0;
return ret;
}
void brcmf_bus_add_txhdrlen(struct device *dev, uint len)
{
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_pub *drvr = bus_if->drvr;
if (drvr) {
drvr->hdrlen += len;
}
}
void brcmf_dev_reset(struct device *dev)
{
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_pub *drvr = bus_if->drvr;
if (drvr == NULL)
return;
if (drvr->iflist[0])
brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
}
void brcmf_detach(struct device *dev)
{
s32 i;
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_pub *drvr = bus_if->drvr;
brcmf_dbg(TRACE, "Enter\n");
if (drvr == NULL)
return;
#ifdef CONFIG_INET
unregister_inetaddr_notifier(&drvr->inetaddr_notifier);
#endif
#if IS_ENABLED(CONFIG_IPV6)
unregister_inet6addr_notifier(&drvr->inet6addr_notifier);
#endif
/* stop firmware event handling */
brcmf_fweh_detach(drvr);
if (drvr->config)
brcmf_p2p_detach(&drvr->config->p2p);
brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN);
/* make sure primary interface removed last */
for (i = BRCMF_MAX_IFS-1; i > -1; i--)
brcmf_remove_interface(drvr->iflist[i], false);
brcmf_cfg80211_detach(drvr->config);
brcmf_bus_stop(drvr->bus_if);
brcmf_proto_detach(drvr);
brcmf_debug_detach(drvr);
bus_if->drvr = NULL;
kfree(drvr);
}
s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len)
{
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_if *ifp = bus_if->drvr->iflist[0];
return brcmf_fil_iovar_data_set(ifp, name, data, len);
}
static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp)
{
return atomic_read(&ifp->pend_8021x_cnt);
}
int brcmf_netdev_wait_pend8021x(struct brcmf_if *ifp)
{
int err;
err = wait_event_timeout(ifp->pend_8021x_wait,
!brcmf_get_pend_8021x_cnt(ifp),
MAX_WAIT_FOR_8021X_TX);
if (!err)
brcmf_err("Timed out waiting for no pending 802.1x packets\n");
return !err;
}
void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state)
{
struct brcmf_pub *drvr = bus->drvr;
struct net_device *ndev;
int ifidx;
brcmf_dbg(TRACE, "%d -> %d\n", bus->state, state);
bus->state = state;
if (state == BRCMF_BUS_UP) {
for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) {
if ((drvr->iflist[ifidx]) &&
(drvr->iflist[ifidx]->ndev)) {
ndev = drvr->iflist[ifidx]->ndev;
if (netif_queue_stopped(ndev))
netif_wake_queue(ndev);
}
}
}
}
static void brcmf_driver_register(struct work_struct *work)
{
#ifdef CONFIG_BRCMFMAC_SDIO
brcmf_sdio_register();
#endif
#ifdef CONFIG_BRCMFMAC_USB
brcmf_usb_register();
#endif
#ifdef CONFIG_BRCMFMAC_PCIE
brcmf_pcie_register();
#endif
}
static DECLARE_WORK(brcmf_driver_work, brcmf_driver_register);
int __init brcmf_core_init(void)
{
if (!schedule_work(&brcmf_driver_work))
return -EBUSY;
/* NEXMON netlink init */
cfg.input = nexmon_nl_ioctl_handler;
nl_sock = netlink_kernel_create(&init_net, NETLINK_USER, &cfg);
if (!nl_sock) {
brcmf_err("NEXMON: %s: Error creating netlink socket\n", __FUNCTION__);
return -1;
}
return 0;
}
void __exit brcmf_core_exit(void)
{
/*NEXMON netlink */
netlink_kernel_release(nl_sock);
cancel_work_sync(&brcmf_driver_work);
#ifdef CONFIG_BRCMFMAC_SDIO
brcmf_sdio_exit();
#endif
#ifdef CONFIG_BRCMFMAC_USB
brcmf_usb_exit();
#endif
#ifdef CONFIG_BRCMFMAC_PCIE
brcmf_pcie_exit();
#endif
}