Commit 9e3d9ae5 authored by Vladimir Oltean's avatar Vladimir Oltean Committed by Jakub Kicinski

net: dsa: mv88e6xxx: replace VTU violation prints with trace points

It is possible to trigger these VTU violation messages very easily,
it's only necessary to send packets with an unknown VLAN ID to a port
that belongs to a VLAN-aware bridge.

Do a similar thing as for ATU violation messages, and hide them in the
kernel's trace buffer.

New usage model:

$ trace-cmd list | grep mv88e6xxx
mv88e6xxx
mv88e6xxx:mv88e6xxx_vtu_miss_violation
mv88e6xxx:mv88e6xxx_vtu_member_violation
$ trace-cmd report
Signed-off-by: default avatarVladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: default avatarSaeed Mahameed <saeed@kernel.org>
Reviewed-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 8646384d
......@@ -13,6 +13,7 @@
#include "chip.h"
#include "global1.h"
#include "trace.h"
/* Offset 0x02: VTU FID Register */
......@@ -628,14 +629,12 @@ static irqreturn_t mv88e6xxx_g1_vtu_prob_irq_thread_fn(int irq, void *dev_id)
spid = val & MV88E6XXX_G1_VTU_OP_SPID_MASK;
if (val & MV88E6XXX_G1_VTU_OP_MEMBER_VIOLATION) {
dev_err_ratelimited(chip->dev, "VTU member violation for vid %d, source port %d\n",
vid, spid);
trace_mv88e6xxx_vtu_member_violation(chip->dev, spid, vid);
chip->ports[spid].vtu_member_violation++;
}
if (val & MV88E6XXX_G1_VTU_OP_MISS_VIOLATION) {
dev_dbg_ratelimited(chip->dev, "VTU miss violation for vid %d, source port %d\n",
vid, spid);
trace_mv88e6xxx_vtu_miss_violation(chip->dev, spid, vid);
chip->ports[spid].vtu_miss_violation++;
}
......
......@@ -55,6 +55,36 @@ DEFINE_EVENT(mv88e6xxx_atu_violation, mv88e6xxx_atu_full_violation,
const unsigned char *addr, u16 fid),
TP_ARGS(dev, spid, portvec, addr, fid));
DECLARE_EVENT_CLASS(mv88e6xxx_vtu_violation,
TP_PROTO(const struct device *dev, int spid, u16 vid),
TP_ARGS(dev, spid, vid),
TP_STRUCT__entry(
__string(name, dev_name(dev))
__field(int, spid)
__field(u16, vid)
),
TP_fast_assign(
__assign_str(name, dev_name(dev));
__entry->spid = spid;
__entry->vid = vid;
),
TP_printk("dev %s spid %d vid %u",
__get_str(name), __entry->spid, __entry->vid)
);
DEFINE_EVENT(mv88e6xxx_vtu_violation, mv88e6xxx_vtu_member_violation,
TP_PROTO(const struct device *dev, int spid, u16 vid),
TP_ARGS(dev, spid, vid));
DEFINE_EVENT(mv88e6xxx_vtu_violation, mv88e6xxx_vtu_miss_violation,
TP_PROTO(const struct device *dev, int spid, u16 vid),
TP_ARGS(dev, spid, vid));
#endif /* _MV88E6XXX_TRACE_H */
/* We don't want to use include/trace/events */
......
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