From 2bb66a8183d6396babde51e558b1ab35733f275f Mon Sep 17 00:00:00 2001 From: Franky Lin Date: Thu, 20 Aug 2015 22:06:04 +0200 Subject: brcmfmac: add debugfs entry for msgbuf statistics Expose ring buffer read/write pointers and other useful statistics through debugfs. Reviewed-by: Arend Van Spriel Reviewed-by: Hante Meuleman Reviewed-by: Pieter-Paul Giesberts Signed-off-by: Franky Lin Signed-off-by: Arend van Spriel Signed-off-by: Kalle Valo --- drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c | 56 ++++++++++++++++++++++++ 1 file changed, 56 insertions(+) (limited to 'drivers/net/wireless') diff --git a/drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c b/drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c index 898c3801e658..7b2136c9badb 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, 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: -- cgit v1.2.3