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brcmfmac: add debugfs entry for msgbuf statistics

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Expose ring buffer read/write pointers and other useful statistics
through debugfs.

Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Franky Lin 2015-08-20 22:06:04 +02:00 committed by Kalle Valo
parent 0882dda3bc
commit 2bb66a8183
1 changed files with 56 additions and 0 deletions
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56
drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c
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@ -1360,6 +1360,60 @@ void brcmf_msgbuf_delete_flowring(struct brcmf_pub *drvr, u8 flowid)
}
}
#ifdef DEBUG
static int brcmf_msgbuf_stats_read(struct seq_file *seq, void *data)
{
struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
struct brcmf_pub *drvr = bus_if->drvr;
struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
struct brcmf_commonring *commonring;
u16 i;
struct brcmf_flowring_ring *ring;
struct brcmf_flowring_hash *hash;
commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
seq_printf(seq, "h2d_ctl_submit: rp %4u, wp %4u, depth %4u\n",
commonring->r_ptr, commonring->w_ptr, commonring->depth);
commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_RXPOST_SUBMIT];
seq_printf(seq, "h2d_rx_submit: rp %4u, wp %4u, depth %4u\n",
commonring->r_ptr, commonring->w_ptr, commonring->depth);
commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_CONTROL_COMPLETE];
seq_printf(seq, "d2h_ctl_cmplt: rp %4u, wp %4u, depth %4u\n",
commonring->r_ptr, commonring->w_ptr, commonring->depth);
commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_TX_COMPLETE];
seq_printf(seq, "d2h_tx_cmplt: rp %4u, wp %4u, depth %4u\n",
commonring->r_ptr, commonring->w_ptr, commonring->depth);
commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_RX_COMPLETE];
seq_printf(seq, "d2h_rx_cmplt: rp %4u, wp %4u, depth %4u\n",
commonring->r_ptr, commonring->w_ptr, commonring->depth);
seq_printf(seq, "\nh2d_flowrings: depth %u\n",
BRCMF_H2D_TXFLOWRING_MAX_ITEM);
seq_puts(seq, "Active flowrings:\n");
hash = msgbuf->flow->hash;
for (i = 0; i < msgbuf->flow->nrofrings; i++) {
if (!msgbuf->flow->rings[i])
continue;
ring = msgbuf->flow->rings[i];
if (ring->status != RING_OPEN)
continue;
commonring = msgbuf->flowrings[i];
hash = &msgbuf->flow->hash[ring->hash_id];
seq_printf(seq, "id %3u: rp %4u, wp %4u, qlen %4u, blocked %u\n"
" ifidx %u, fifo %u, da %pM\n",
i, commonring->r_ptr, commonring->w_ptr,
skb_queue_len(&ring->skblist), ring->blocked,
hash->ifidx, hash->fifo, hash->mac);
}
return 0;
}
#else
static int brcmf_msgbuf_stats_read(struct seq_file *seq, void *data)
{
return 0;
}
#endif
int brcmf_proto_msgbuf_attach(struct brcmf_pub *drvr)
{
@ -1460,6 +1514,8 @@ int brcmf_proto_msgbuf_attach(struct brcmf_pub *drvr)
spin_lock_init(&msgbuf->flowring_work_lock);
INIT_LIST_HEAD(&msgbuf->work_queue);
brcmf_debugfs_add_entry(drvr, "msgbuf_stats", brcmf_msgbuf_stats_read);
return 0;
fail: