package/kernel/mac80211/patches/brcm/350-v5.1-brcmfmac-print-firmware-reported-ring-status-errors.patch

   1 From c988b78244df8216902e20de536434e2f474a37e Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
   3 Date: Fri, 8 Feb 2019 15:24:39 +0100
   4 Subject: [PATCH] brcmfmac: print firmware reported ring status errors
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 Firmware is capable of reporting ring status. It's used e.g. to signal
  10 some problem with a specific ring setup. This patch adds support for
  11 printing ring & error number which may be useful for debugging setup
  12 issues.
  13
  14 Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
  15 Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
  16 ---
  17  .../broadcom/brcm80211/brcmfmac/msgbuf.c      | 25 +++++++++++++++++++
  18  1 file changed, 25 insertions(+)
  19
  20 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
  21 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
  22 @@ -134,6 +134,14 @@ struct msgbuf_completion_hdr {
  23         __le16                          flow_ring_id;
  24  };
  25
  26 +/* Data struct for the MSGBUF_TYPE_RING_STATUS */
  27 +struct msgbuf_ring_status {
  28 +       struct msgbuf_common_hdr        msg;
  29 +       struct msgbuf_completion_hdr    compl_hdr;
  30 +       __le16                          write_idx;
  31 +       __le32                          rsvd0[5];
  32 +};
  33 +
  34  struct msgbuf_rx_event {
  35         struct msgbuf_common_hdr        msg;
  36         struct msgbuf_completion_hdr    compl_hdr;
  37 @@ -1180,6 +1188,19 @@ brcmf_msgbuf_process_rx_complete(struct
  38         brcmf_netif_rx(ifp, skb);
  39  }
  40
  41 +static void brcmf_msgbuf_process_ring_status(struct brcmf_msgbuf *msgbuf,
  42 +                                            void *buf)
  43 +{
  44 +       struct msgbuf_ring_status *ring_status = buf;
  45 +       int err;
  46 +
  47 +       err = le16_to_cpu(ring_status->compl_hdr.status);
  48 +       if (err) {
  49 +               int ring = le16_to_cpu(ring_status->compl_hdr.flow_ring_id);
  50 +
  51 +               brcmf_err("Firmware reported ring %d error: %d\n", ring, err);
  52 +       }
  53 +}
  54
  55  static void
  56  brcmf_msgbuf_process_flow_ring_create_response(struct brcmf_msgbuf *msgbuf,
  57 @@ -1241,6 +1262,10 @@ static void brcmf_msgbuf_process_msgtype
  58
  59         msg = (struct msgbuf_common_hdr *)buf;
  60         switch (msg->msgtype) {
  61 +       case MSGBUF_TYPE_RING_STATUS:
  62 +               brcmf_dbg(MSGBUF, "MSGBUF_TYPE_RING_STATUS\n");
  63 +               brcmf_msgbuf_process_ring_status(msgbuf, buf);
  64 +               break;
  65         case MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT:
  66                 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT\n");
  67                 brcmf_msgbuf_process_flow_ring_create_response(msgbuf, buf);