* Description
* Discard reserved ring buffer sample, pointed to by *data*.
* If **BPF_RB_NO_WAKEUP** is specified in *flags*, no notification
- * of new data availability is sent.
+ * of new data availability is sent. Discarded records remain in
+ * the ring buffer until consumed by user space, so a later submit
+ * using adaptive wakeup might not wake up the consumer.
* If **BPF_RB_FORCE_WAKEUP** is specified in *flags*, notification
* of new data availability is sent unconditionally.
* If **0** is specified in *flags*, an adaptive notification
#define BTF_MAGIC 0xeB9F
#define BTF_VERSION 1
+/*
+ * BTF layout section consists of a struct btf_layout for each known
+ * kind at BTF encoding time.
+ */
+struct btf_layout {
+ __u8 info_sz; /* size of singular element after btf_type */
+ __u8 elem_sz; /* size of each of btf_vlen(t) elements */
+ __u16 flags; /* currently unused */
+};
+
struct btf_header {
__u16 magic;
__u8 version;
__u32 type_len; /* length of type section */
__u32 str_off; /* offset of string section */
__u32 str_len; /* length of string section */
+ __u32 layout_off; /* offset of layout section */
+ __u32 layout_len; /* length of layout section */
};
/* Max # of type identifier */
#define __KERNEL_DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
+/*
+ * Divide positive or negative dividend by positive or negative divisor
+ * and round to closest integer. Result is undefined for negative
+ * divisors if the dividend variable type is unsigned and for negative
+ * dividends if the divisor variable type is unsigned.
+ */
+#define __KERNEL_DIV_ROUND_CLOSEST(x, divisor) \
+({ \
+ __typeof__(x) __x = x; \
+ __typeof__(divisor) __d = divisor; \
+ \
+ (((__typeof__(x))-1) > 0 || \
+ ((__typeof__(divisor))-1) > 0 || \
+ (((__x) > 0) == ((__d) > 0))) ? \
+ (((__x) + ((__d) / 2)) / (__d)) : \
+ (((__x) - ((__d) / 2)) / (__d)); \
+})
+
#endif /* _LINUX_CONST_H */
DEVLINK_ATTR_PARAM_RESET_DEFAULT, /* flag */
DEVLINK_ATTR_INDEX, /* uint */
+ DEVLINK_ATTR_RESOURCE_SCOPE_MASK, /* u32 */
/* Add new attributes above here, update the spec in
* Documentation/netlink/specs/devlink.yaml and re-generate
DEVLINK_RESOURCE_UNIT_ENTRY,
};
+enum devlink_resource_scope {
+ DEVLINK_RESOURCE_SCOPE_DEV_BIT,
+ DEVLINK_RESOURCE_SCOPE_PORT_BIT,
+};
+
+#define DEVLINK_RESOURCE_SCOPE_DEV \
+ _BITUL(DEVLINK_RESOURCE_SCOPE_DEV_BIT)
+#define DEVLINK_RESOURCE_SCOPE_PORT \
+ _BITUL(DEVLINK_RESOURCE_SCOPE_PORT_BIT)
+
enum devlink_port_fn_attr_cap {
DEVLINK_PORT_FN_ATTR_CAP_ROCE_BIT,
DEVLINK_PORT_FN_ATTR_CAP_MIGRATABLE_BIT,
* @IFLA_BR_FDB_MAX_LEARNED
* Set the number of max dynamically learned FDB entries for the current
* bridge.
+ *
+ * @IFLA_BR_STP_MODE
+ * Set the STP mode for the bridge, which controls how the bridge
+ * selects between userspace and kernel STP. The valid values are
+ * documented below in the ``BR_STP_MODE_*`` constants.
*/
enum {
IFLA_BR_UNSPEC,
IFLA_BR_MCAST_QUERIER_STATE,
IFLA_BR_FDB_N_LEARNED,
IFLA_BR_FDB_MAX_LEARNED,
+ IFLA_BR_STP_MODE,
__IFLA_BR_MAX,
};
#define IFLA_BR_MAX (__IFLA_BR_MAX - 1)
+/**
+ * DOC: Bridge STP mode values
+ *
+ * @BR_STP_MODE_AUTO
+ * Default. The kernel invokes the ``/sbin/bridge-stp`` helper to hand
+ * the bridge to a userspace STP daemon (e.g. mstpd). Only attempted in
+ * the initial network namespace; in other namespaces this falls back to
+ * kernel STP.
+ *
+ * @BR_STP_MODE_USER
+ * Directly enable userspace STP (``BR_USER_STP``) without invoking the
+ * ``/sbin/bridge-stp`` helper. Works in any network namespace.
+ * Userspace is responsible for ensuring an STP daemon manages the
+ * bridge.
+ *
+ * @BR_STP_MODE_KERNEL
+ * Directly enable kernel STP (``BR_KERNEL_STP``) without invoking the
+ * helper.
+ *
+ * The mode controls how the bridge selects between userspace and kernel
+ * STP when STP is enabled via ``IFLA_BR_STP_STATE``. It can only be
+ * changed while STP is disabled (``IFLA_BR_STP_STATE`` == 0), returns
+ * ``-EBUSY`` otherwise. The default value is ``BR_STP_MODE_AUTO``.
+ */
+enum br_stp_mode {
+ BR_STP_MODE_AUTO,
+ BR_STP_MODE_USER,
+ BR_STP_MODE_KERNEL,
+ __BR_STP_MODE_MAX
+};
+
+#define BR_STP_MODE_MAX (__BR_STP_MODE_MAX - 1)
+
struct ifla_bridge_id {
__u8 prio[2];
__u8 addr[6]; /* ETH_ALEN */
NETKIT_L3,
};
+enum netkit_pairing {
+ NETKIT_DEVICE_PAIR,
+ NETKIT_DEVICE_SINGLE,
+};
+
/* NETKIT_SCRUB_NONE leaves clearing skb->{mark,priority} up to
* the BPF program if attached. This also means the latter can
* consume the two fields if they were populated earlier.
IFLA_NETKIT_PEER_SCRUB,
IFLA_NETKIT_HEADROOM,
IFLA_NETKIT_TAILROOM,
+ IFLA_NETKIT_PAIRING,
__IFLA_NETKIT_MAX,
};
#define IFLA_NETKIT_MAX (__IFLA_NETKIT_MAX - 1)