From: Franky Lin <fran...@broadcom.com>
Expose ring buffer read/write pointers and other useful statistics
through debugfs.
Reviewed-by: Arend Van Spriel <ar...@broadcom.com>
Reviewed-by: Hante Meuleman <meule...@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <piete...@broadcom.com>
Signed-off-by: Franky Lin <fran...@broadcom.com>
Signed-off-by: Arend van Spriel <ar...@broadcom.com>
---
drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c | 56 ++++++++++++++++++++++++
1 file changed, 56 insertions(+)
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c
b/drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c
index 363a31e..d0e1ce5 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c
@@ -1360,6 +1360,60 @@ void brcmf_msgbuf_delete_flowring(struct brcmf_pub
*drvr, u16 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)
{
@@ -1467,6 +1521,8 @@ 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:
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
