#include <linux/spinlock.h>
#include <linux/module.h>
#include <linux/list.h>
+#include <linux/timer.h>
+#include <linux/filter.h>
#include <net/genetlink.h>
#endif
*
* @WPROBE_ATTR_INTERFACE: interface name to process query on (NLA_STRING)
* @WPROBE_ATTR_MAC: mac address (used for wireless links) (NLA_STRING)
- * @WPROBE_ATTR_FLAGS: interface/link/attribute flags (see enum wprobe_flags) (NLA_U32)
- * @WPROBE_ATTR_DURATION: sampling duration (in milliseconds) (NLA_MSECS)
+ * @WPROBE_ATTR_FLAGS: interface/link/attribute flags (see enum wprobe_flags) (NLA_U32)a
+ * @WPROBE_ATTR_DURATION: sampling duration (in milliseconds) (NLA_MSECS)
*
* @WPROBE_ATTR_ID: attribute id (NLA_U32)
* @WPROBE_ATTR_NAME: attribute name (NLA_STRING)
* @WPROBE_ATTR_TYPE: attribute type (NLA_U8)
- * @WPROBE_ATTR_SCALE: attribute scale factor (NLA_U32)
*
* attribute values:
*
* @WPROBE_VAL_SUM: sum of all samples
* @WPROBE_VAL_SUM_SQ: sum of all samples^2
* @WPROBE_VAL_SAMPLES: number of samples
+ * @WPROBE_VAL_SCALE_TIME: last time the samples were scaled down
+ *
+ * configuration:
+ * @WPROBE_ATTR_INTERVAL: (measurement interval in milliseconds) (NLA_MSECS)
+ * @WPROBE_ATTR_SAMPLES_MIN: minimum samples to keep during inactivity (NLA_U32)
+ * @WPROBE_ATTR_SAMPLES_MAX: maximum samples to keep before scaling down (NLA_U32)
+ * @WPROBE_ATTR_SAMPLES_SCALE_M: multiplier for scaling down samples (NLA_U32)
+ * @WPROBE_ATTR_SAMPLES_SCALE_D: divisor for scaling down samples (NLA_U32)
*
* @WPROBE_ATTR_LAST: unused
*/
enum wprobe_attr {
+ /* query attributes */
WPROBE_ATTR_UNSPEC,
WPROBE_ATTR_INTERFACE,
WPROBE_ATTR_MAC,
WPROBE_ATTR_FLAGS,
- WPROBE_ATTR_DURATION,
- WPROBE_ATTR_SCALE,
- /* end of query attributes */
/* response data */
WPROBE_ATTR_ID,
WPROBE_ATTR_NAME,
WPROBE_ATTR_TYPE,
+ WPROBE_ATTR_DURATION,
/* value type attributes */
WPROBE_VAL_STRING,
WPROBE_VAL_SUM,
WPROBE_VAL_SUM_SQ,
WPROBE_VAL_SAMPLES,
+ WPROBE_VAL_SCALE_TIME,
+
+ /* config attributes */
+ WPROBE_ATTR_INTERVAL,
+ WPROBE_ATTR_SAMPLES_MIN,
+ WPROBE_ATTR_SAMPLES_MAX,
+ WPROBE_ATTR_SAMPLES_SCALE_M,
+ WPROBE_ATTR_SAMPLES_SCALE_D,
+ WPROBE_ATTR_FILTER,
+
+ WPROBE_ATTR_FILTER_GROUP,
+ WPROBE_ATTR_RXCOUNT,
+ WPROBE_ATTR_TXCOUNT,
WPROBE_ATTR_LAST
};
* @WPROBE_CMD_SET_FLAGS: set global/link flags
* @WPROBE_CMD_MEASURE: take a snapshot of the current data
* @WPROBE_CMD_GET_LINKS: get a list of links
+ * @WPROBE_CMD_CONFIG: set config options
+ * @WPROBE_CMD_GET_FILTER: get counters for active filters
*
* @WPROBE_CMD_LAST: unused
*
WPROBE_CMD_SET_FLAGS,
WPROBE_CMD_MEASURE,
WPROBE_CMD_GET_LINKS,
+ WPROBE_CMD_CONFIG,
+ WPROBE_CMD_GET_FILTER,
WPROBE_CMD_LAST
};
/**
* enum wprobe_flags: flags for wprobe links and items
* @WPROBE_F_KEEPSTAT: keep statistics for this link/device
- * @WPROBE_F_RESET: reset statistics now (used only in WPROBE_CMD_SET_LINK)
+ * @WPROBE_F_RESET: reset statistics now
* @WPROBE_F_NEWDATA: used to indicate that a value has been updated
*/
enum wprobe_flags {
struct wprobe_link;
struct wprobe_item;
struct wprobe_source;
+struct wprobe_value;
/**
* struct wprobe_link - data structure describing a wireless link
char addr[ETH_ALEN];
u32 flags;
void *priv;
- void *val;
+ struct wprobe_value *val;
};
/**
/* timestamps */
u64 first, last;
+ u64 scale_timestamp;
+};
+
+struct wprobe_filter_item_hdr {
+ char name[32];
+ __be32 n_items;
+} __attribute__((packed));
+
+struct wprobe_filter_item {
+ struct wprobe_filter_item_hdr hdr;
+ struct sock_filter filter[];
+} __attribute__((packed));
+
+struct wprobe_filter_counter {
+ u64 tx;
+ u64 rx;
};
+struct wprobe_filter_group {
+ const char *name;
+ int n_items;
+ struct wprobe_filter_item **items;
+ struct wprobe_filter_counter *counters;
+};
+
+struct wprobe_filter_hdr {
+ __u8 magic[4];
+ __u8 version;
+ __u8 hdrlen;
+ __u16 n_groups;
+} __attribute__((packed));
+
+struct wprobe_filter {
+ spinlock_t lock;
+ struct sk_buff *skb;
+ void *data;
+ int n_groups;
+ int hdrlen;
+ struct wprobe_filter_item **items;
+ struct wprobe_filter_counter *counters;
+ struct wprobe_filter_group groups[];
+};
+
+enum {
+ WPROBE_PKT_RX = 0x00,
+ WPROBE_PKT_TX = 0x10,
+};
+
+struct wprobe_wlan_hdr {
+ u16 len;
+ u8 snr;
+ u8 type;
+} __attribute__((packed));
+
+
/**
* struct wprobe_source - data structure describing a wireless interface
*
const struct wprobe_item *global_items;
int n_global_items;
- int (*sync_data)(struct wprobe_iface *dev, struct wprobe_link *l, struct wprobe_value *val, bool measure);
+ int (*sync_data)(struct wprobe_iface *dev, struct wprobe_link *l,
+ struct wprobe_value *val, bool measure);
void *priv;
/* handled by the wprobe core */
struct list_head list;
struct list_head links;
spinlock_t lock;
- void *val;
- void *query_val;
+ struct wprobe_value *val;
+ struct wprobe_value *query_val;
+ struct wprobe_filter *active_filter;
+
+ u32 measure_interval;
+ struct timer_list measure_timer;
+
+ u32 scale_min;
+ u32 scale_max;
+ u32 scale_m;
+ u32 scale_d;
};
+
#define WPROBE_FILL_BEGIN(_ptr, _list) do { \
struct wprobe_value *__val = (_ptr); \
const struct wprobe_item *__item = _list; \
*/
extern void __weak wprobe_update_stats(struct wprobe_iface *dev, struct wprobe_link *l);
+/**
+ * wprobe_add_frame: add frame for layer 2 analysis
+ * @dev: wprobe_iface structure describing the interface
+ * @hdr: metadata for the frame
+ * @data: 802.11 header pointer
+ * @len: length of the 802.11 header
+ */
+extern int __weak wprobe_add_frame(struct wprobe_iface *dev, const struct wprobe_wlan_hdr *hdr, void *data, int len);
+
#endif /* __KERNEL__ */
#endif
projects / openwrt.git / blobdiff