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linux/net/ieee802154/trace.h
Azeem Shaikh cd91250306 ieee802154: Replace strlcpy with strscpy 
strlcpy() reads the entire source buffer first.
This read may exceed the destination size limit.
This is both inefficient and can lead to linear read
overflows if a source string is not NUL-terminated [1].
In an effort to remove strlcpy() completely [2], replace
strlcpy() here with strscpy().

Direct replacement is safe here since the return values
from the helper macros are ignored by the callers.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
[2] https://github.com/KSPP/linux/issues/89

Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230613003326.3538391-1-azeemshaikh38@gmail.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
2023-06-16 22:14:24 +02:00

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/* SPDX-License-Identifier: GPL-2.0 */
/* Based on net/wireless/trace.h */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM cfg802154
#if !defined(__RDEV_CFG802154_OPS_TRACE) || defined(TRACE_HEADER_MULTI_READ)
#define __RDEV_CFG802154_OPS_TRACE
#include <linux/tracepoint.h>
#include <net/cfg802154.h>
#define MAXNAME 32
#define WPAN_PHY_ENTRY __array(char, wpan_phy_name, MAXNAME)
#define WPAN_PHY_ASSIGN strscpy(__entry->wpan_phy_name, \
wpan_phy_name(wpan_phy), \
MAXNAME)
#define WPAN_PHY_PR_FMT "%s"
#define WPAN_PHY_PR_ARG __entry->wpan_phy_name
#define WPAN_DEV_ENTRY __field(u32, identifier)
#define WPAN_DEV_ASSIGN (__entry->identifier) = (!IS_ERR_OR_NULL(wpan_dev) \
? wpan_dev->identifier : 0)
#define WPAN_DEV_PR_FMT "wpan_dev(%u)"
#define WPAN_DEV_PR_ARG (__entry->identifier)
#define WPAN_CCA_ENTRY __field(enum nl802154_cca_modes, cca_mode) \
__field(enum nl802154_cca_opts, cca_opt)
#define WPAN_CCA_ASSIGN \
do { \
(__entry->cca_mode) = cca->mode; \
(__entry->cca_opt) = cca->opt; \
} while (0)
#define WPAN_CCA_PR_FMT "cca_mode: %d, cca_opt: %d"
#define WPAN_CCA_PR_ARG __entry->cca_mode, __entry->cca_opt
#define BOOL_TO_STR(bo) (bo) ? "true" : "false"
/*************************************************************
* rdev->ops traces *
*************************************************************/
DECLARE_EVENT_CLASS(wpan_phy_only_evt,
TP_PROTO(struct wpan_phy *wpan_phy),
TP_ARGS(wpan_phy),
TP_STRUCT__entry(
WPAN_PHY_ENTRY
),
TP_fast_assign(
WPAN_PHY_ASSIGN;
),
TP_printk(WPAN_PHY_PR_FMT, WPAN_PHY_PR_ARG)
);
DEFINE_EVENT(wpan_phy_only_evt, 802154_rdev_suspend,
TP_PROTO(struct wpan_phy *wpan_phy),
TP_ARGS(wpan_phy)
);
DEFINE_EVENT(wpan_phy_only_evt, 802154_rdev_resume,
TP_PROTO(struct wpan_phy *wpan_phy),
TP_ARGS(wpan_phy)
);
TRACE_EVENT(802154_rdev_add_virtual_intf,
TP_PROTO(struct wpan_phy *wpan_phy, char *name,
enum nl802154_iftype type, __le64 extended_addr),
TP_ARGS(wpan_phy, name, type, extended_addr),
TP_STRUCT__entry(
WPAN_PHY_ENTRY
__string(vir_intf_name, name ? name : "<noname>")
__field(enum nl802154_iftype, type)
__field(__le64, extended_addr)
),
TP_fast_assign(
WPAN_PHY_ASSIGN;
__assign_str(vir_intf_name, name ? name : "<noname>");
__entry->type = type;
__entry->extended_addr = extended_addr;
),
TP_printk(WPAN_PHY_PR_FMT ", virtual intf name: %s, type: %d, extended addr: 0x%llx",
WPAN_PHY_PR_ARG, __get_str(vir_intf_name), __entry->type,
__le64_to_cpu(__entry->extended_addr))
);
TRACE_EVENT(802154_rdev_del_virtual_intf,
TP_PROTO(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev),
TP_ARGS(wpan_phy, wpan_dev),
TP_STRUCT__entry(
WPAN_PHY_ENTRY
WPAN_DEV_ENTRY
),
TP_fast_assign(
WPAN_PHY_ASSIGN;
WPAN_DEV_ASSIGN;
),
TP_printk(WPAN_PHY_PR_FMT ", " WPAN_DEV_PR_FMT, WPAN_PHY_PR_ARG,
WPAN_DEV_PR_ARG)
);
TRACE_EVENT(802154_rdev_set_channel,
TP_PROTO(struct wpan_phy *wpan_phy, u8 page, u8 channel),
TP_ARGS(wpan_phy, page, channel),
TP_STRUCT__entry(
WPAN_PHY_ENTRY
__field(u8, page)
__field(u8, channel)
),
TP_fast_assign(
WPAN_PHY_ASSIGN;
__entry->page = page;
__entry->channel = channel;
),
TP_printk(WPAN_PHY_PR_FMT ", page: %d, channel: %d", WPAN_PHY_PR_ARG,
__entry->page, __entry->channel)
);
TRACE_EVENT(802154_rdev_set_tx_power,
TP_PROTO(struct wpan_phy *wpan_phy, s32 power),
TP_ARGS(wpan_phy, power),
TP_STRUCT__entry(
WPAN_PHY_ENTRY
__field(s32, power)
),
TP_fast_assign(
WPAN_PHY_ASSIGN;
__entry->power = power;
),
TP_printk(WPAN_PHY_PR_FMT ", mbm: %d", WPAN_PHY_PR_ARG,
__entry->power)
);
TRACE_EVENT(802154_rdev_set_cca_mode,
TP_PROTO(struct wpan_phy *wpan_phy, const struct wpan_phy_cca *cca),
TP_ARGS(wpan_phy, cca),
TP_STRUCT__entry(
WPAN_PHY_ENTRY
WPAN_CCA_ENTRY
),
TP_fast_assign(
WPAN_PHY_ASSIGN;
WPAN_CCA_ASSIGN;
),
TP_printk(WPAN_PHY_PR_FMT ", " WPAN_CCA_PR_FMT, WPAN_PHY_PR_ARG,
WPAN_CCA_PR_ARG)
);
TRACE_EVENT(802154_rdev_set_cca_ed_level,
TP_PROTO(struct wpan_phy *wpan_phy, s32 ed_level),
TP_ARGS(wpan_phy, ed_level),
TP_STRUCT__entry(
WPAN_PHY_ENTRY
__field(s32, ed_level)
),
TP_fast_assign(
WPAN_PHY_ASSIGN;
__entry->ed_level = ed_level;
),
TP_printk(WPAN_PHY_PR_FMT ", ed level: %d", WPAN_PHY_PR_ARG,
__entry->ed_level)
);
DECLARE_EVENT_CLASS(802154_le16_template,
TP_PROTO(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
__le16 le16arg),
TP_ARGS(wpan_phy, wpan_dev, le16arg),
TP_STRUCT__entry(
WPAN_PHY_ENTRY
WPAN_DEV_ENTRY
__field(__le16, le16arg)
),
TP_fast_assign(
WPAN_PHY_ASSIGN;
WPAN_DEV_ASSIGN;
__entry->le16arg = le16arg;
),
TP_printk(WPAN_PHY_PR_FMT ", " WPAN_DEV_PR_FMT ", pan id: 0x%04x",
WPAN_PHY_PR_ARG, WPAN_DEV_PR_ARG,
__le16_to_cpu(__entry->le16arg))
);
DEFINE_EVENT(802154_le16_template, 802154_rdev_set_pan_id,
TP_PROTO(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
__le16 le16arg),
TP_ARGS(wpan_phy, wpan_dev, le16arg)
);
DEFINE_EVENT_PRINT(802154_le16_template, 802154_rdev_set_short_addr,
TP_PROTO(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
__le16 le16arg),
TP_ARGS(wpan_phy, wpan_dev, le16arg),
TP_printk(WPAN_PHY_PR_FMT ", " WPAN_DEV_PR_FMT ", short addr: 0x%04x",
WPAN_PHY_PR_ARG, WPAN_DEV_PR_ARG,
__le16_to_cpu(__entry->le16arg))
);
TRACE_EVENT(802154_rdev_set_backoff_exponent,
TP_PROTO(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
u8 min_be, u8 max_be),
TP_ARGS(wpan_phy, wpan_dev, min_be, max_be),
TP_STRUCT__entry(
WPAN_PHY_ENTRY
WPAN_DEV_ENTRY
__field(u8, min_be)
__field(u8, max_be)
),
TP_fast_assign(
WPAN_PHY_ASSIGN;
WPAN_DEV_ASSIGN;
__entry->min_be = min_be;
__entry->max_be = max_be;
),
TP_printk(WPAN_PHY_PR_FMT ", " WPAN_DEV_PR_FMT
", min be: %d, max be: %d", WPAN_PHY_PR_ARG,
WPAN_DEV_PR_ARG, __entry->min_be, __entry->max_be)
);
TRACE_EVENT(802154_rdev_set_csma_backoffs,
TP_PROTO(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
u8 max_csma_backoffs),
TP_ARGS(wpan_phy, wpan_dev, max_csma_backoffs),
TP_STRUCT__entry(
WPAN_PHY_ENTRY
WPAN_DEV_ENTRY
__field(u8, max_csma_backoffs)
),
TP_fast_assign(
WPAN_PHY_ASSIGN;
WPAN_DEV_ASSIGN;
__entry->max_csma_backoffs = max_csma_backoffs;
),
TP_printk(WPAN_PHY_PR_FMT ", " WPAN_DEV_PR_FMT
", max csma backoffs: %d", WPAN_PHY_PR_ARG,
WPAN_DEV_PR_ARG, __entry->max_csma_backoffs)
);
TRACE_EVENT(802154_rdev_set_max_frame_retries,
TP_PROTO(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
s8 max_frame_retries),
TP_ARGS(wpan_phy, wpan_dev, max_frame_retries),
TP_STRUCT__entry(
WPAN_PHY_ENTRY
WPAN_DEV_ENTRY
__field(s8, max_frame_retries)
),
TP_fast_assign(
WPAN_PHY_ASSIGN;
WPAN_DEV_ASSIGN;
__entry->max_frame_retries = max_frame_retries;
),
TP_printk(WPAN_PHY_PR_FMT ", " WPAN_DEV_PR_FMT
", max frame retries: %d", WPAN_PHY_PR_ARG,
WPAN_DEV_PR_ARG, __entry->max_frame_retries)
);
TRACE_EVENT(802154_rdev_set_lbt_mode,
TP_PROTO(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
bool mode),
TP_ARGS(wpan_phy, wpan_dev, mode),
TP_STRUCT__entry(
WPAN_PHY_ENTRY
WPAN_DEV_ENTRY
__field(bool, mode)
),
TP_fast_assign(
WPAN_PHY_ASSIGN;
WPAN_DEV_ASSIGN;
__entry->mode = mode;
),
TP_printk(WPAN_PHY_PR_FMT ", " WPAN_DEV_PR_FMT
", lbt mode: %s", WPAN_PHY_PR_ARG,
WPAN_DEV_PR_ARG, BOOL_TO_STR(__entry->mode))
);
TRACE_EVENT(802154_rdev_set_ackreq_default,
TP_PROTO(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
bool ackreq),
TP_ARGS(wpan_phy, wpan_dev, ackreq),
TP_STRUCT__entry(
WPAN_PHY_ENTRY
WPAN_DEV_ENTRY
__field(bool, ackreq)
),
TP_fast_assign(
WPAN_PHY_ASSIGN;
WPAN_DEV_ASSIGN;
__entry->ackreq = ackreq;
),
TP_printk(WPAN_PHY_PR_FMT ", " WPAN_DEV_PR_FMT
", ackreq default: %s", WPAN_PHY_PR_ARG,
WPAN_DEV_PR_ARG, BOOL_TO_STR(__entry->ackreq))
);
TRACE_EVENT(802154_rdev_trigger_scan,
TP_PROTO(struct wpan_phy *wpan_phy,
struct cfg802154_scan_request *request),
TP_ARGS(wpan_phy, request),
TP_STRUCT__entry(
WPAN_PHY_ENTRY
__field(u8, page)
__field(u32, channels)
__field(u8, duration)
),
TP_fast_assign(
WPAN_PHY_ASSIGN;
__entry->page = request->page;
__entry->channels = request->channels;
__entry->duration = request->duration;
),
TP_printk(WPAN_PHY_PR_FMT ", scan, page: %d, channels: %x, duration %d",
WPAN_PHY_PR_ARG, __entry->page, __entry->channels, __entry->duration)
);
TRACE_EVENT(802154_rdev_send_beacons,
TP_PROTO(struct wpan_phy *wpan_phy,
struct cfg802154_beacon_request *request),
TP_ARGS(wpan_phy, request),
TP_STRUCT__entry(
WPAN_PHY_ENTRY
__field(u8, interval)
),
TP_fast_assign(
WPAN_PHY_ASSIGN;
__entry->interval = request->interval;
),
TP_printk(WPAN_PHY_PR_FMT ", sending beacons (interval order: %d)",
WPAN_PHY_PR_ARG, __entry->interval)
);
DECLARE_EVENT_CLASS(802154_wdev_template,
TP_PROTO(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev),
TP_ARGS(wpan_phy, wpan_dev),
TP_STRUCT__entry(
WPAN_PHY_ENTRY
WPAN_DEV_ENTRY
),
TP_fast_assign(
WPAN_PHY_ASSIGN;
WPAN_DEV_ASSIGN;
),
TP_printk(WPAN_PHY_PR_FMT ", " WPAN_DEV_PR_FMT,
WPAN_PHY_PR_ARG, WPAN_DEV_PR_ARG)
);
DEFINE_EVENT(802154_wdev_template, 802154_rdev_abort_scan,
TP_PROTO(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev),
TP_ARGS(wpan_phy, wpan_dev)
);
DEFINE_EVENT(802154_wdev_template, 802154_rdev_stop_beacons,
TP_PROTO(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev),
TP_ARGS(wpan_phy, wpan_dev)
);
TRACE_EVENT(802154_rdev_return_int,
TP_PROTO(struct wpan_phy *wpan_phy, int ret),
TP_ARGS(wpan_phy, ret),
TP_STRUCT__entry(
WPAN_PHY_ENTRY
__field(int, ret)
),
TP_fast_assign(
WPAN_PHY_ASSIGN;
__entry->ret = ret;
),
TP_printk(WPAN_PHY_PR_FMT ", returned: %d", WPAN_PHY_PR_ARG,
__entry->ret)
);
#endif /* !__RDEV_CFG802154_OPS_TRACE || TRACE_HEADER_MULTI_READ */
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE trace
#include <trace/define_trace.h>
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