brcmfmac: add tracepoint for capturing the SDPCM header

Having the SDPCM header information in the traces is a valuable
piece of information.

Reviewed-by: Franky Lin <frankyl@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 20 insertions, 0 deletions

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c
index 67f05db4b9b8..ab1c919f7b08 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c
@@ -1147,6 +1147,8 @@ static int brcmf_sdio_hdparse(struct brcmf_sdio *bus, u8 *header,
         u8 rx_seq, fc, tx_seq_max;
         u32 swheader;
 
+        trace_brcmf_sdpcm_hdr(false, header);
+
         /* hw header */
         len = get_unaligned_le16(header);
         checksum = get_unaligned_le16(header + sizeof(u16));
@@ -1269,6 +1271,7 @@ static void brcmf_sdio_hdpack(struct brcmf_sdio *bus, u8 *header,
                      SDPCM_DOFFSET_MASK;
         *(((__le32 *)header) + 1) = cpu_to_le32(sw_header);
         *(((__le32 *)header) + 2) = 0;
+        trace_brcmf_sdpcm_hdr(true, header);
 }
 
 static u8 brcmf_sdbrcm_rxglom(struct brcmf_sdio *bus, u8 rxseq)
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/tracepoint.h b/drivers/net/wireless/brcm80211/brcmfmac/tracepoint.h
index 4605a1dd6366..3c67529b9074 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/tracepoint.h
+++ b/drivers/net/wireless/brcm80211/brcmfmac/tracepoint.h
@@ -110,6 +110,23 @@ TRACE_EVENT(brcmf_bdchdr,
         TP_printk("bdc: prio=%d siglen=%d", __entry->prio, __entry->siglen)
 );
 
+TRACE_EVENT(brcmf_sdpcm_hdr,
+        TP_PROTO(bool tx, void *data),
+        TP_ARGS(tx, data),
+        TP_STRUCT__entry(
+                __field(u8, tx)
+                __field(u16, len)
+                __array(u8, hdr, 12)
+        ),
+        TP_fast_assign(
+                memcpy(__entry->hdr, data, 12);
+                __entry->len = __entry->hdr[0] | (__entry->hdr[1] << 8);
+                __entry->tx = tx ? 1 : 0;
+        ),
+        TP_printk("sdpcm: %s len %u, seq %d", __entry->tx ? "TX" : "RX",
+                  __entry->len, __entry->hdr[4])
+);
+
 #ifdef CONFIG_BRCM_TRACING
 
 #undef TRACE_INCLUDE_PATH