diff options
| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2022-09-05 22:27:24 +0200 |
|---|---|---|
| committer | Stefan Schmidt <stefan@datenfreihafen.org> | 2022-10-12 13:04:51 +0200 |
| commit | 3a22550ab50a2bed1779c7d03c9f0239d33cc514 (patch) | |
| tree | 6092607770ad9ce2550c09cc321def66f96ccee2 | |
| parent | 0218277df5a527c9e9474aa0e4e4e2f4bbc6f5cc (diff) | |
net: mac802154: Avoid displaying misleading debug information
With DEBUG defined, any frame received will see its MHR fields (fc and
addresses, mainly) being printed in the kernel log buffer,
unconditionally. In most cases this is fine, but in some specific cases
(like Acknowledgment frames, where both the source and destination
addressing fields are omitted), it displays garbage which is
misleading.
Only print the addressing fields when they are present, which clarifies
the logs.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20220905202724.1322046-1-miquel.raynal@bootlin.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
| -rw-r--r-- | net/mac802154/rx.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/mac802154/rx.c b/net/mac802154/rx.c index 6640bd237352..d1f7b8df41fe 100644 --- a/net/mac802154/rx.c +++ b/net/mac802154/rx.c @@ -114,8 +114,10 @@ fail: static void ieee802154_print_addr(const char *name, const struct ieee802154_addr *addr) { - if (addr->mode == IEEE802154_ADDR_NONE) + if (addr->mode == IEEE802154_ADDR_NONE) { pr_debug("%s not present\n", name); + return; + } pr_debug("%s PAN ID: %04x\n", name, le16_to_cpu(addr->pan_id)); if (addr->mode == IEEE802154_ADDR_SHORT) { |