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brcmfmac: add trace event for capturing BDC header

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The BDC header contains PropTx TLV signals that are useful to capture
for debugging. This event captures the header and tlv's in binary
form. This can be post-processed using trace-cmd plugin.

Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Arend van Spriel 2013-06-06 13:18:05 +02:00 committed by John W. Linville
parent cf3a6872b9
commit ea0737d6e2
2 changed files with 24 additions and 0 deletions
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3
drivers/net/wireless/brcm80211/brcmfmac/dhd_cdc.c
View file

@ -30,6 +30,7 @@
#include "dhd_bus.h"
#include "fwsignal.h"
#include "dhd_dbg.h"
#include "tracepoint.h"
struct brcmf_proto_cdc_dcmd {
__le32 cmd; /* dongle command value */
@ -292,6 +293,7 @@ void brcmf_proto_hdrpush(struct brcmf_pub *drvr, int ifidx, u8 offset,
h->flags2 = 0;
h->data_offset = offset;
BDC_SET_IF_IDX(h, ifidx);
trace_brcmf_bdchdr(pktbuf->data);
}
int brcmf_proto_hdrpull(struct brcmf_pub *drvr, bool do_fws, u8 *ifidx,
@ -309,6 +311,7 @@ int brcmf_proto_hdrpull(struct brcmf_pub *drvr, bool do_fws, u8 *ifidx,
return -EBADE;
}
trace_brcmf_bdchdr(pktbuf->data);
h = (struct brcmf_proto_bdc_header *)(pktbuf->data);
*ifidx = BDC_GET_IF_IDX(h);

21
drivers/net/wireless/brcm80211/brcmfmac/tracepoint.h
View file

@ -87,6 +87,27 @@ TRACE_EVENT(brcmf_hexdump,
TP_printk("hexdump [length=%lu]", __entry->len)
);
TRACE_EVENT(brcmf_bdchdr,
TP_PROTO(void *data),
TP_ARGS(data),
TP_STRUCT__entry(
__field(u8, flags)
__field(u8, prio)
__field(u8, flags2)
__field(u32, siglen)
__dynamic_array(u8, signal, *((u8 *)data + 3) * 4)
),
TP_fast_assign(
__entry->flags = *(u8 *)data;
__entry->prio = *((u8 *)data + 1);
__entry->flags2 = *((u8 *)data + 2);
__entry->siglen = *((u8 *)data + 3) * 4;
memcpy(__get_dynamic_array(signal),
(u8 *)data + 4, __entry->siglen);
),
TP_printk("bdc: prio=%d siglen=%d", __entry->prio, __entry->siglen)
);
#ifdef CONFIG_BRCM_TRACING
#undef TRACE_INCLUDE_PATH