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wil6210: multiple connect - initial support 

Enable multiple (up to 8 - HW/FW limitation) simultaneous connections.
Each connection has its own CID (connection ID) that describes chip's
beam-forming entity. Tx Vring should refer to correct CID for frame to reach
its destination.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Vladimir Kondratiev 2014-02-27 16:20:43 +02:00 committed by John W. Linville
parent 59f7c0a957
commit 3df2cd3618
6 changed files with 148 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/net/wireless/ath/wil6210/cfg80211.c
View File

@ -110,15 +110,19 @@ static int wil_cfg80211_get_station(struct wiphy *wiphy,
{
struct wil6210_priv *wil = wiphy_to_wil(wiphy);
int rc;
int cid = wil_find_cid(wil, mac);
struct wmi_notify_req_cmd cmd = {
.cid = 0,
.cid = cid,
.interval_usec = 0,
};
if (memcmp(mac, wil->dst_addr[0], ETH_ALEN))
wil_info(wil, "%s(%pM) CID %d\n", __func__, mac, cid);
if (cid < 0)
return -ENOENT;
/* WMI_NOTIFY_REQ_DONE_EVENTID handler fills wil->stats.bf_mcs */
/* TODO: keep stats per CID */
rc = wmi_call(wil, WMI_NOTIFY_REQ_CMDID, &cmd, sizeof(cmd),
WMI_NOTIFY_REQ_DONE_EVENTID, NULL, 0, 20);
if (rc)

45
drivers/net/wireless/ath/wil6210/debugfs.c
View File

@ -71,8 +71,13 @@ static int wil_vring_debugfs_show(struct seq_file *s, void *data)
for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) {
struct vring *vring = &(wil->vring_tx[i]);
if (vring->va) {
int cid = wil->vring2cid_tid[i][0];
int tid = wil->vring2cid_tid[i][1];
char name[10];
snprintf(name, sizeof(name), "tx_%2d", i);
seq_printf(s, "\n%pM CID %d TID %d\n",
wil->sta[cid].addr, cid, tid);
wil_print_vring(s, wil, name, vring, '_', 'H');
}
}
@ -592,6 +597,45 @@ static const struct file_operations fops_temp = {
.llseek = seq_lseek,
};
/*---------Station matrix------------*/
static int wil_sta_debugfs_show(struct seq_file *s, void *data)
{
struct wil6210_priv *wil = s->private;
int i;
for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
struct wil_sta_info *p = &wil->sta[i];
char *status = "unknown";
switch (p->status) {
case wil_sta_unused:
status = "unused ";
break;
case wil_sta_conn_pending:
status = "pending ";
break;
case wil_sta_connected:
status = "connected";
break;
}
seq_printf(s, "[%d] %pM %s\n", i, p->addr, status);
}
return 0;
}
static int wil_sta_seq_open(struct inode *inode, struct file *file)
{
return single_open(file, wil_sta_debugfs_show, inode->i_private);
}
static const struct file_operations fops_sta = {
.open = wil_sta_seq_open,
.release = single_release,
.read = seq_read,
.llseek = seq_lseek,
};
/*----------------*/
int wil6210_debugfs_init(struct wil6210_priv *wil)
{
@ -603,6 +647,7 @@ int wil6210_debugfs_init(struct wil6210_priv *wil)
debugfs_create_file("mbox", S_IRUGO, dbg, wil, &fops_mbox);
debugfs_create_file("vrings", S_IRUGO, dbg, wil, &fops_vring);
debugfs_create_file("stations", S_IRUGO, dbg, wil, &fops_sta);
debugfs_create_file("desc", S_IRUGO, dbg, wil, &fops_txdesc);
debugfs_create_u32("desc_index", S_IRUGO | S_IWUSR, dbg,
&dbg_txdesc_index);

24
drivers/net/wireless/ath/wil6210/main.c
View File

@ -113,14 +113,20 @@ static void wil_connect_worker(struct work_struct *work)
rc = wil_vring_init_tx(wil, 0, WIL6210_TX_RING_SIZE, cid, 0);
wil->pending_connect_cid = -1;
if (rc == 0)
if (rc == 0) {
wil->sta[cid].status = wil_sta_connected;
wil_link_on(wil);
} else {
wil->sta[cid].status = wil_sta_unused;
}
}
int wil_priv_init(struct wil6210_priv *wil)
{
wil_dbg_misc(wil, "%s()\n", __func__);
memset(wil->sta, 0, sizeof(wil->sta));
mutex_init(&wil->mutex);
mutex_init(&wil->wmi_mutex);
@ -370,3 +376,19 @@ int wil_down(struct wil6210_priv *wil)
return rc;
}
int wil_find_cid(struct wil6210_priv *wil, const u8 *mac)
{
int i;
int rc = -ENOENT;
for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
if ((wil->sta[i].status != wil_sta_unused) &&
(0 == memcmp(wil->sta[i].addr, mac, ETH_ALEN))) {
rc = i;
break;
}
}
return rc;
}

47
drivers/net/wireless/ath/wil6210/txrx.c
View File

@ -613,6 +613,9 @@ int wil_vring_init_tx(struct wil6210_priv *wil, int id, int size,
}
vring->hwtail = le32_to_cpu(reply.cmd.tx_vring_tail_ptr);
wil->vring2cid_tid[id][0] = cid;
wil->vring2cid_tid[id][1] = tid;
return 0;
out_free:
wil_vring_free(wil, vring, 1);
@ -634,10 +637,27 @@ void wil_vring_fini_tx(struct wil6210_priv *wil, int id)
static struct vring *wil_find_tx_vring(struct wil6210_priv *wil,
struct sk_buff *skb)
{
struct vring *v = &wil->vring_tx[0];
int i;
struct ethhdr *eth = (void *)skb->data;
int cid = wil_find_cid(wil, eth->h_dest);
if (v->va)
return v;
if (cid < 0)
return NULL;
/* TODO: fix for multiple TID */
for (i = 0; i < ARRAY_SIZE(wil->vring2cid_tid); i++) {
if (wil->vring2cid_tid[i][0] == cid) {
struct vring *v = &wil->vring_tx[i];
wil_dbg_txrx(wil, "%s(%pM) -> [%d]\n",
__func__, eth->h_dest, i);
if (v->va) {
return v;
} else {
wil_dbg_txrx(wil, "vring[%d] not valid\n", i);
return NULL;
}
}
}
return NULL;
}
@ -740,9 +760,6 @@ static int wil_tx_vring(struct wil6210_priv *wil, struct vring *vring,
}
_d = &(vring->va[i].tx);
/* FIXME FW can accept only unicast frames for the peer */
memcpy(skb->data, wil->dst_addr[vring_index], ETH_ALEN);
pa = dma_map_single(dev, skb->data,
skb_headlen(skb), DMA_TO_DEVICE);
@ -836,6 +853,7 @@ static int wil_tx_vring(struct wil6210_priv *wil, struct vring *vring,
netdev_tx_t wil_start_xmit(struct sk_buff *skb, struct net_device *ndev)
{
struct wil6210_priv *wil = ndev_to_wil(ndev);
struct ethhdr *eth = (void *)skb->data;
struct vring *vring;
int rc;
@ -854,9 +872,22 @@ netdev_tx_t wil_start_xmit(struct sk_buff *skb, struct net_device *ndev)
}
/* find vring */
vring = wil_find_tx_vring(wil, skb);
if (is_unicast_ether_addr(eth->h_dest)) {
vring = wil_find_tx_vring(wil, skb);
} else {
int i = 0;
/* TODO: duplicate for all CID's */
vring = &wil->vring_tx[i];
if (vring->va) {
int cid = wil->vring2cid_tid[i][0];
/* FIXME FW can accept only unicast frames */
memcpy(skb->data, wil->sta[cid].addr, ETH_ALEN);
} else {
vring = NULL;
}
}
if (!vring) {
wil_err(wil, "No Tx VRING available\n");
wil_err(wil, "No Tx VRING found for %pM\n", eth->h_dest);
goto drop;
}
/* set up vring entry */

22
drivers/net/wireless/ath/wil6210/wil6210.h
View File

@ -226,6 +226,24 @@ struct wil6210_stats {
u16 peer_tx_sector;
};
enum wil_sta_status {
wil_sta_unused = 0,
wil_sta_conn_pending = 1,
wil_sta_connected = 2,
};
/**
* struct wil_sta_info - data for peer
*
* Peer identified by its CID (connection ID)
* NIC performs beam forming for each peer;
* if no beam forming done, frame exchange is not
* possible.
*/
struct wil_sta_info {
u8 addr[ETH_ALEN];
enum wil_sta_status status;
};
struct wil6210_priv {
struct pci_dev *pdev;
int n_msi;
@ -267,7 +285,8 @@ struct wil6210_priv {
/* DMA related */
struct vring vring_rx;
struct vring vring_tx[WIL6210_MAX_TX_RINGS];
u8 dst_addr[WIL6210_MAX_TX_RINGS][ETH_ALEN];
u8 vring2cid_tid[WIL6210_MAX_TX_RINGS][2]; /* [0] - CID, [1] - TID */
struct wil_sta_info sta[WIL6210_MAX_CID];
/* scan */
struct cfg80211_scan_request *scan_request;
@ -334,6 +353,7 @@ void wil_link_off(struct wil6210_priv *wil);
int wil_up(struct wil6210_priv *wil);
int wil_down(struct wil6210_priv *wil);
void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r);
int wil_find_cid(struct wil6210_priv *wil, const u8 *mac);
void __iomem *wmi_buffer(struct wil6210_priv *wil, __le32 ptr);
void __iomem *wmi_addr(struct wil6210_priv *wil, u32 ptr);

17
drivers/net/wireless/ath/wil6210/wmi.c
View File

@ -384,6 +384,11 @@ static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len)
evt->assoc_req_len, evt->assoc_resp_len);
return;
}
if (evt->cid >= WIL6210_MAX_CID) {
wil_err(wil, "Connect CID invalid : %d\n", evt->cid);
return;
}
ch = evt->channel + 1;
wil_dbg_wmi(wil, "Connect %pM channel [%d] cid %d\n",
evt->bssid, ch, evt->cid);
@ -439,7 +444,8 @@ static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len)
/* FIXME FW can transmit only ucast frames to peer */
/* FIXME real ring_id instead of hard coded 0 */
memcpy(wil->dst_addr[0], evt->bssid, ETH_ALEN);
memcpy(wil->sta[evt->cid].addr, evt->bssid, ETH_ALEN);
wil->sta[evt->cid].status = wil_sta_conn_pending;
wil->pending_connect_cid = evt->cid;
queue_work(wil->wmi_wq_conn, &wil->connect_worker);
@ -449,14 +455,19 @@ static void wmi_evt_disconnect(struct wil6210_priv *wil, int id,
void *d, int len)
{
struct wmi_disconnect_event *evt = d;
int cid = wil_find_cid(wil, evt->bssid);
wil_dbg_wmi(wil, "Disconnect %pM reason %d proto %d wmi\n",
evt->bssid,
wil_dbg_wmi(wil, "Disconnect %pM CID %d reason %d proto %d wmi\n",
evt->bssid, cid,
evt->protocol_reason_status, evt->disconnect_reason);
wil->sinfo_gen++;
/* TODO: fix for multiple connections */
wil6210_disconnect(wil, evt->bssid);
if (cid >= 0)
wil->sta[cid].status = wil_sta_unused;
}
static void wmi_evt_notify(struct wil6210_priv *wil, int id, void *d, int len)