#include <stdint.h>
#include <stdlib.h>
#include <ctype.h>
#include <errno.h>
#include <limits.h>
#include <rte_config.h>
#include <rte_os.h>

Macros
#define	RTE_STD_C11 __extension__

#define	__rte_aligned(a) __attribute__((__aligned__(a)))

#define	__rte_packed __attribute__((__packed__))

#define	__rte_weak __attribute__((__weak__))

#define	__rte_used __attribute__((used))

#define	__rte_unused __attribute__((__unused__))

#define	RTE_SET_USED(x) (void)(x)

#define	__rte_format_printf(format_index, first_arg) __attribute__((format(printf, format_index, first_arg)))

#define	RTE_INIT_PRIO(func, prio) static void __attribute__((constructor(RTE_PRIO(prio)), used)) func(void)

#define	RTE_INIT(func) RTE_INIT_PRIO(func, LAST)

#define	RTE_FINI_PRIO(func, prio) static void __attribute__((destructor(RTE_PRIO(prio)), used)) func(void)

#define	RTE_FINI(func) RTE_FINI_PRIO(func, LAST)

#define	__rte_noreturn __attribute__((noreturn))

#define	__rte_always_inline inline __attribute__((always_inline))

#define	__rte_noinline __attribute__((noinline))

#define	__rte_hot __attribute__((hot))

#define	__rte_cold __attribute__((cold))

#define	RTE_PTR_ADD(ptr, x) ((void*)((uintptr_t)(ptr) + (x)))

#define	RTE_PTR_SUB(ptr, x) ((void*)((uintptr_t)ptr - (x)))

#define	RTE_PTR_DIFF(ptr1, ptr2) ((uintptr_t)(ptr1) - (uintptr_t)(ptr2))

#define	RTE_CAST_FIELD(var, field, type) ((type )((uintptr_t)(var) + offsetof(typeof(*(var)), field)))

#define	RTE_PTR_ALIGN_FLOOR(ptr, align) ((typeof(ptr))RTE_ALIGN_FLOOR((uintptr_t)ptr, align))

#define	RTE_ALIGN_FLOOR(val, align) (typeof(val))((val) & (~((typeof(val))((align) - 1))))

#define	RTE_PTR_ALIGN_CEIL(ptr, align) RTE_PTR_ALIGN_FLOOR((typeof(ptr))RTE_PTR_ADD(ptr, (align) - 1), align)

#define	RTE_ALIGN_CEIL(val, align) RTE_ALIGN_FLOOR(((val) + ((typeof(val)) (align) - 1)), align)

#define	RTE_PTR_ALIGN(ptr, align) RTE_PTR_ALIGN_CEIL(ptr, align)

#define	RTE_ALIGN(val, align) RTE_ALIGN_CEIL(val, align)

#define	RTE_ALIGN_MUL_CEIL(v, mul) (((v + (typeof(v))(mul) - 1) / ((typeof(v))(mul))) * (typeof(v))(mul))

#define	RTE_ALIGN_MUL_FLOOR(v, mul) ((v / ((typeof(v))(mul))) * (typeof(v))(mul))

#define	RTE_ALIGN_MUL_NEAR(v, mul)

#define	RTE_BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))

#define	RTE_CACHE_LINE_MASK (RTE_CACHE_LINE_SIZE-1)

#define	RTE_CACHE_LINE_ROUNDUP(size)

#define	RTE_CACHE_LINE_MIN_SIZE 64

#define	__rte_cache_aligned __rte_aligned(RTE_CACHE_LINE_SIZE)

#define	__rte_cache_min_aligned __rte_aligned(RTE_CACHE_LINE_MIN_SIZE)

#define	RTE_IS_POWER_OF_2(n) ((n) && !(((n) - 1) & (n)))

#define	RTE_MIN(a, b)

#define	RTE_MAX(a, b)

#define	offsetof(TYPE, MEMBER) __builtin_offsetof (TYPE, MEMBER)

#define	container_of(ptr, type, member)

#define	RTE_SIZEOF_FIELD(type, field) (sizeof(((type *)0)->field))

#define	RTE_STR(x) _RTE_STR(x)

#define	RTE_FMT(fmt, ...) fmt "%.0s", __VA_ARGS__ ""

#define	RTE_LEN2MASK(ln, tp) ((tp)((uint64_t)-1 >> (sizeof(uint64_t) * CHAR_BIT - (ln))))

#define	RTE_DIM(a) (sizeof (a) / sizeof ((a)[0]))

Typedefs
typedef uint64_t	phys_addr_t

typedef uint64_t	rte_iova_t

Functions
static int	rte_is_aligned (void *ptr, unsigned align)

static uint32_t	rte_combine32ms1b (uint32_t x)

static uint64_t	rte_combine64ms1b (uint64_t v)

static int	rte_is_power_of_2 (uint32_t n)

static uint32_t	rte_align32pow2 (uint32_t x)

static uint32_t	rte_align32prevpow2 (uint32_t x)

static uint64_t	rte_align64pow2 (uint64_t v)

static uint64_t	rte_align64prevpow2 (uint64_t v)

static uint32_t	rte_bsf32 (uint32_t v)

static int	rte_bsf32_safe (uint64_t v, uint32_t *pos)

static uint32_t	rte_log2_u32 (uint32_t v)

static int	rte_fls_u32 (uint32_t x)

static int	rte_bsf64 (uint64_t v)

static int	rte_bsf64_safe (uint64_t v, uint32_t *pos)

static int	rte_fls_u64 (uint64_t x)

static uint32_t	rte_log2_u64 (uint64_t v)

static uint64_t	rte_str_to_size (const char *str)

__rte_noreturn void	rte_exit (int exit_code, const char *format,...) __rte_format_printf(2

Variables
__extension__ typedef void *	RTE_MARKER [0]

__extension__ typedef uint8_t	RTE_MARKER8 [0]

__extension__ typedef uint16_t	RTE_MARKER16 [0]

__extension__ typedef uint32_t	RTE_MARKER32 [0]

__extension__ typedef uint64_t	RTE_MARKER64 [0]

Detailed Description

Generic, commonly-used macro and inline function definitions for DPDK.

Definition in file rte_common.h.

Macro Definition Documentation

#define RTE_STD_C11 __extension__

C extension macro for environments lacking C11 features.

Examples:: examples/ip_pipeline/thread.c.

Definition at line 40 of file rte_common.h.

#define __rte_aligned ( a ) __attribute__((__aligned__(a)))

Force alignment

Definition at line 69 of file rte_common.h.

struct rte_vxlan_gpe_hdr __rte_packed __attribute__((__packed__))

Force a structure to be packed

Examples:: examples/ip_pipeline/cli.c, examples/l3fwd-power/main.c, examples/l3fwd/l3fwd_em.c, examples/performance-thread/l3fwd-thread/main.c, and examples/ptpclient/ptpclient.c.

Definition at line 84 of file rte_common.h.

#define __rte_weak __attribute__((__weak__))

Mark a function or variable to a weak reference.

Definition at line 92 of file rte_common.h.

#define __rte_used __attribute__((used))

Force symbol to be generated even if it appears to be unused.

Definition at line 97 of file rte_common.h.

#define __rte_unused __attribute__((__unused__))

short definition to mark a function parameter unused

Examples:: examples/bond/main.c, examples/cmdline/commands.c, examples/cmdline/parse_obj_list.c, examples/ethtool/ethtool-app/ethapp.c, examples/ethtool/ethtool-app/main.c, examples/ethtool/lib/rte_ethtool.c, examples/fips_validation/fips_validation_aes.c, examples/fips_validation/fips_validation_hmac.c, examples/fips_validation/fips_validation_sha.c, examples/fips_validation/fips_validation_tdes.c, examples/fips_validation/fips_validation_xts.c, examples/helloworld/main.c, examples/ip_fragmentation/main.c, examples/ip_pipeline/kni.c, examples/ip_pipeline/tap.c, examples/ip_pipeline/thread.c, examples/ip_reassembly/main.c, examples/ipsec-secgw/ipsec-secgw.c, examples/ipsec-secgw/parser.c, examples/ipv4_multicast/main.c, examples/kni/main.c, examples/l2fwd-jobstats/main.c, examples/l2fwd-keepalive/main.c, examples/l2fwd-keepalive/shm.c, examples/l2fwd/main.c, examples/l3fwd-acl/main.c, examples/l3fwd-power/main.c, examples/l3fwd/l3fwd_em.c, examples/l3fwd/l3fwd_lpm.c, examples/link_status_interrupt/main.c, examples/multi_process/client_server_mp/mp_server/main.c, examples/multi_process/hotplug_mp/commands.c, examples/multi_process/simple_mp/main.c, examples/multi_process/simple_mp/mp_commands.c, examples/multi_process/symmetric_mp/main.c, examples/ntb/ntb_fwd.c, examples/packet_ordering/main.c, examples/performance-thread/common/arch/arm64/ctx.c, examples/performance-thread/common/lthread_cond.c, examples/performance-thread/common/lthread_mutex.c, examples/performance-thread/l3fwd-thread/main.c, examples/performance-thread/pthread_shim/main.c, examples/qos_meter/main.c, examples/qos_sched/cmdline.c, examples/qos_sched/main.c, examples/rxtx_callbacks/main.c, examples/server_node_efd/server/main.c, examples/tep_termination/main.c, examples/timer/main.c, examples/vdpa/main.c, examples/vhost/main.c, examples/vhost_blk/blk.c, examples/vhost_blk/vhost_blk.c, examples/vm_power_manager/channel_manager.c, examples/vm_power_manager/channel_monitor.c, examples/vm_power_manager/guest_cli/vm_power_cli_guest.c, examples/vm_power_manager/main.c, examples/vm_power_manager/oob_monitor_nop.c, examples/vm_power_manager/vm_power_cli.c, and examples/vmdq/main.c.

Definition at line 104 of file rte_common.h.

#define RTE_SET_USED ( x ) (void)(x)

definition to mark a variable or function parameter as used so as to avoid a compiler warning

Examples:: examples/bbdev_app/main.c, examples/ipsec-secgw/ipsec-secgw.c, examples/l3fwd-graph/main.c, examples/l3fwd-power/main.c, examples/link_status_interrupt/main.c, and examples/service_cores/main.c.

Definition at line 110 of file rte_common.h.

#define __rte_format_printf	(	format_index,
		first_arg
	)	__attribute__((format(printf, format_index, first_arg)))

Check format string and its arguments at compile-time.

GCC on Windows assumes MS-specific format string by default, even if the underlying stdio implementation is ANSI-compliant, so this must be overridden.

Definition at line 123 of file rte_common.h.

#define RTE_INIT_PRIO	(	func,
		prio
	)	static void __attribute__((constructor(RTE_PRIO(prio)), used)) func(void)

Run function before main() with high priority.

Parameters

func	Constructor function.
prio	Priority number must be above 100. Lowest number is the first to run.

Definition at line 145 of file rte_common.h.

#define RTE_INIT ( func ) RTE_INIT_PRIO(func, LAST)

Run function before main() with low priority.

The constructor will be run after prioritized constructors.

Parameters

func	Constructor function.

Examples:: examples/performance-thread/common/lthread_diag.c, examples/performance-thread/common/lthread_sched.c, examples/performance-thread/common/lthread_tls.c, and examples/performance-thread/pthread_shim/pthread_shim.c.

Definition at line 157 of file rte_common.h.

#define RTE_FINI_PRIO	(	func,
		prio
	)	static void __attribute__((destructor(RTE_PRIO(prio)), used)) func(void)

Run after main() with low priority.

Parameters

func	Destructor function name.
prio	Priority number must be above 100. Lowest number is the last to run.

Definition at line 170 of file rte_common.h.

#define RTE_FINI ( func ) RTE_FINI_PRIO(func, LAST)

Run after main() with high priority.

The destructor will be run before prioritized destructors.

Parameters

func	Destructor function name.

Definition at line 182 of file rte_common.h.

#define __rte_noreturn __attribute__((noreturn))

Hint never returning function

Examples:: examples/flow_classify/flow_classify.c, examples/l2fwd-cat/l2fwd-cat.c, examples/performance-thread/l3fwd-thread/main.c, examples/ptpclient/ptpclient.c, examples/qos_meter/main.c, examples/rxtx_callbacks/main.c, examples/skeleton/basicfwd.c, and examples/timer/main.c.

Definition at line 188 of file rte_common.h.

#define __rte_always_inline inline __attribute__((always_inline))

Force a function to be inlined

Examples:: examples/eventdev_pipeline/pipeline_worker_generic.c, examples/eventdev_pipeline/pipeline_worker_tx.c, examples/l2fwd-event/l2fwd_event.c, examples/l3fwd/l3fwd_em.c, examples/l3fwd/l3fwd_lpm.c, examples/performance-thread/common/lthread_sched.c, examples/performance-thread/l3fwd-thread/main.c, examples/tep_termination/main.c, examples/vhost/main.c, and examples/vhost/virtio_net.c.

Definition at line 193 of file rte_common.h.

#define __rte_noinline __attribute__((noinline))

Force a function to be noinlined

Examples:: examples/l2fwd-event/l2fwd_event.c, examples/l3fwd/l3fwd_em.c, and examples/l3fwd/l3fwd_lpm.c.

Definition at line 198 of file rte_common.h.

#define __rte_hot __attribute__((hot))

Hint function in the hot path

Definition at line 203 of file rte_common.h.

#define __rte_cold __attribute__((cold))

Hint function in the cold path

Definition at line 208 of file rte_common.h.

#define RTE_PTR_ADD	(	ptr,
		x
	)	((void*)((uintptr_t)(ptr) + (x)))

add a byte-value offset to a pointer

Examples:: examples/ipsec-secgw/esp.c, and examples/ipsec-secgw/ipsec_worker.c.

Definition at line 215 of file rte_common.h.

#define RTE_PTR_SUB	(	ptr,
		x
	)	((void*)((uintptr_t)ptr - (x)))

subtract a byte-value offset from a pointer

Definition at line 220 of file rte_common.h.

#define RTE_PTR_DIFF	(	ptr1,
		ptr2
	)	((uintptr_t)(ptr1) - (uintptr_t)(ptr2))

get the difference between two pointer values, i.e. how far apart in bytes are the locations they point two. It is assumed that ptr1 is greater than ptr2.

Examples:: examples/ioat/ioatfwd.c, examples/ipsec-secgw/sa.c, examples/ipsec-secgw/sp4.c, and examples/ipsec-secgw/sp6.c.

Definition at line 227 of file rte_common.h.

#define RTE_CAST_FIELD	(	var,
		field,
		type
	)	((type )((uintptr_t)(var) + offsetof(typeof(*(var)), field)))

Workaround to cast a const field of a structure to non-const type.

Definition at line 232 of file rte_common.h.

#define RTE_PTR_ALIGN_FLOOR	(	ptr,
		align
	)	((typeof(ptr))RTE_ALIGN_FLOOR((uintptr_t)ptr, align))

Macro to align a pointer to a given power-of-two. The resultant pointer will be a pointer of the same type as the first parameter, and point to an address no higher than the first parameter. Second parameter must be a power-of-two value.

Definition at line 244 of file rte_common.h.

#define RTE_ALIGN_FLOOR	(	val,
		align
	)	(typeof(val))((val) & (~((typeof(val))((align) - 1))))

Macro to align a value to a given power-of-two. The resultant value will be of the same type as the first parameter, and will be no bigger than the first parameter. Second parameter must be a power-of-two value.

Examples:: examples/performance-thread/l3fwd-thread/main.c.

Definition at line 253 of file rte_common.h.

#define RTE_PTR_ALIGN_CEIL	(	ptr,
		align
	)	RTE_PTR_ALIGN_FLOOR((typeof(ptr))RTE_PTR_ADD(ptr, (align) - 1), align)

Macro to align a pointer to a given power-of-two. The resultant pointer will be a pointer of the same type as the first parameter, and point to an address no lower than the first parameter. Second parameter must be a power-of-two value.

Definition at line 262 of file rte_common.h.

#define RTE_ALIGN_CEIL	(	val,
		align
	)	RTE_ALIGN_FLOOR(((val) + ((typeof(val)) (align) - 1)), align)

Macro to align a value to a given power-of-two. The resultant value will be of the same type as the first parameter, and will be no lower than the first parameter. Second parameter must be a power-of-two value.

Examples:: examples/bbdev_app/main.c, examples/fips_validation/fips_dev_self_test.c, and examples/ipsec-secgw/esp.c.

Definition at line 271 of file rte_common.h.

#define RTE_PTR_ALIGN	(	ptr,
		align
	)	RTE_PTR_ALIGN_CEIL(ptr, align)

Macro to align a pointer to a given power-of-two. The resultant pointer will be a pointer of the same type as the first parameter, and point to an address no lower than the first parameter. Second parameter must be a power-of-two value. This function is the same as RTE_PTR_ALIGN_CEIL

Definition at line 281 of file rte_common.h.

#define RTE_ALIGN	(	val,
		align
	)	RTE_ALIGN_CEIL(val, align)

Macro to align a value to a given power-of-two. The resultant value will be of the same type as the first parameter, and will be no lower than the first parameter. Second parameter must be a power-of-two value. This function is the same as RTE_ALIGN_CEIL

Definition at line 290 of file rte_common.h.

#define RTE_ALIGN_MUL_CEIL	(	v,
		mul
	)	(((v + (typeof(v))(mul) - 1) / ((typeof(v))(mul))) * (typeof(v))(mul))

Macro to align a value to the multiple of given value. The resultant value will be of the same type as the first parameter and will be no lower than the first parameter.

Definition at line 297 of file rte_common.h.

#define RTE_ALIGN_MUL_FLOOR	(	v,
		mul
	)	((v / ((typeof(v))(mul))) * (typeof(v))(mul))

Macro to align a value to the multiple of given value. The resultant value will be of the same type as the first parameter and will be no higher than the first parameter.

Definition at line 305 of file rte_common.h.

#define RTE_ALIGN_MUL_NEAR	(	v,
		mul
	)

Value:

({                          \
        typeof(v) ceil = RTE_ALIGN_MUL_CEIL(v, mul);    \
        typeof(v) floor = RTE_ALIGN_MUL_FLOOR(v, mul);  \
        (ceil - v) > (v - floor) ? floor : ceil;    \
    })

Macro to align value to the nearest multiple of the given value. The resultant value might be greater than or less than the first parameter whichever difference is the lowest.

Definition at line 313 of file rte_common.h.

#define RTE_BUILD_BUG_ON ( condition ) ((void)sizeof(char[1 - 2*!!(condition)]))

Triggers an error at compilation time if the condition is true.

Definition at line 342 of file rte_common.h.

#define RTE_CACHE_LINE_MASK (RTE_CACHE_LINE_SIZE-1)

Cache line mask.

Definition at line 347 of file rte_common.h.

#define RTE_CACHE_LINE_ROUNDUP ( size )

Value:

(RTE_CACHE_LINE_SIZE * ((size + RTE_CACHE_LINE_SIZE - 1) / \

RTE_CACHE_LINE_SIZE))

Return the first cache-aligned value greater or equal to size.

Examples:: examples/flow_classify/flow_classify.c.

Definition at line 350 of file rte_common.h.

#define RTE_CACHE_LINE_MIN_SIZE 64

Cache line size in terms of log2 Minimum Cache line size.

Definition at line 364 of file rte_common.h.

struct rte_rcu_qsbr __rte_cache_aligned __rte_aligned(RTE_CACHE_LINE_SIZE)

Force alignment to cache line.

Examples:: examples/bbdev_app/main.c, examples/bond/main.c, examples/distributor/main.c, examples/flow_classify/flow_classify.c, examples/ip_fragmentation/main.c, examples/ip_pipeline/thread.c, examples/ip_reassembly/main.c, examples/ipsec-secgw/ipsec-secgw.c, examples/ipv4_multicast/main.c, examples/kni/main.c, examples/l2fwd-crypto/main.c, examples/l2fwd-jobstats/main.c, examples/l2fwd-keepalive/main.c, examples/l2fwd/main.c, examples/l3fwd-acl/main.c, examples/l3fwd-graph/main.c, examples/l3fwd-power/main.c, examples/l3fwd-power/perf_core.c, examples/l3fwd/l3fwd_em.c, examples/l3fwd/main.c, examples/link_status_interrupt/main.c, examples/ntb/ntb_fwd.c, examples/packet_ordering/main.c, examples/performance-thread/l3fwd-thread/main.c, examples/qos_sched/app_thread.c, examples/vhost_crypto/main.c, and examples/vm_power_manager/power_manager.c.

Definition at line 367 of file rte_common.h.

struct rte_eth_txq_info __rte_cache_min_aligned __rte_aligned(RTE_CACHE_LINE_MIN_SIZE)

Force minimum cache line alignment.

Definition at line 370 of file rte_common.h.

#define RTE_IS_POWER_OF_2 ( n ) ((n) && !(((n) - 1) & (n)))

Macro to return 1 if n is a power of 2, 0 otherwise

Definition at line 451 of file rte_common.h.

#define RTE_MIN	(	a,
		b
	)

Value:

__extension__ ({ \
        typeof (a) _a = (a); \
        typeof (b) _b = (b); \
        _a < _b ? _a : _b; \
    })

Macro to return the minimum of two numbers

Examples:: examples/ip_fragmentation/main.c, examples/ip_reassembly/main.c, examples/ipsec-secgw/ipsec-secgw.c, examples/ipsec-secgw/ipsec_process.c, examples/ipsec-secgw/parser.c, examples/ipv4_multicast/main.c, examples/l2fwd-cat/cat.c, examples/ntb/ntb_fwd.c, examples/server_node_efd/node/node.c, examples/vdpa/main.c, examples/vhost/virtio_net.c, examples/vhost_blk/blk.c, examples/vhost_blk/vhost_blk_compat.c, examples/vhost_crypto/main.c, examples/vm_power_manager/guest_cli/parse.c, and examples/vm_power_manager/parse.c.

Definition at line 540 of file rte_common.h.

#define RTE_MAX	(	a,
		b
	)

Value:

__extension__ ({ \
        typeof (a) _a = (a); \
        typeof (b) _b = (b); \
        _a > _b ? _a : _b; \
    })

Macro to return the maximum of two numbers

Examples:: examples/ioat/ioatfwd.c, examples/ip_pipeline/thread.c, examples/ip_reassembly/main.c, examples/ipsec-secgw/ipsec-secgw.c, examples/l2fwd-cat/cat.c, examples/l2fwd-event/main.c, examples/l2fwd/main.c, examples/l3fwd/l3fwd_event.c, examples/vhost/main.c, examples/vm_power_manager/guest_cli/parse.c, examples/vm_power_manager/parse.c, examples/vmdq/main.c, and examples/vmdq_dcb/main.c.

Definition at line 550 of file rte_common.h.

#define offsetof	(	TYPE,
		MEMBER
	)	__builtin_offsetof (TYPE, MEMBER)

Return the offset of a field in a structure.

Examples:: examples/flow_classify/flow_classify.c, examples/ioat/ioatfwd.c, examples/ip_pipeline/pipeline.c, examples/ipsec-secgw/ipsec-secgw.c, examples/ipsec-secgw/ipsec_process.c, examples/ipsec-secgw/ipsec_worker.c, examples/ipsec-secgw/sp4.c, examples/l3fwd-acl/main.c, examples/l3fwd/l3fwd_em.c, and examples/performance-thread/l3fwd-thread/main.c.

Definition at line 720 of file rte_common.h.

#define container_of	(	ptr,
		type,
		member
	)

Value:

__extension__ ({        \
            const typeof(((type *)0)->member) *_ptr = (ptr); \
			__rte_unused type *_target_ptr = \
                (type *)(ptr);              \
            (type *)(((uintptr_t)_ptr) - offsetof(type, member)); \
        })

Return pointer to the wrapping struct instance.

Example:

struct wrapper { ... struct child c; ... };

struct child *x = obtain(...); struct wrapper *w = container_of(x, struct wrapper, c);

Definition at line 738 of file rte_common.h.

#define RTE_SIZEOF_FIELD	(	type,
		field
	)	(sizeof(((type *)0)->field))

Get the size of a field in a structure.

Parameters

type	The type of the structure.
field	The field in the structure.

Returns: The size of the field in the structure, in bytes.

Definition at line 756 of file rte_common.h.

#define RTE_STR ( x ) _RTE_STR(x)

Take a macro value and get a string version of it

Examples:: examples/vhost_crypto/main.c.

Definition at line 760 of file rte_common.h.

#define RTE_FMT	(	fmt,
		...
	)	fmt "%.0s", __VA_ARGS__ ""

ISO C helpers to modify format strings using variadic macros. This is a replacement for the ", ## __VA_ARGS__" GNU extension. An empty s argument is appended to avoid a dangling comma.

Definition at line 767 of file rte_common.h.

#define RTE_LEN2MASK	(	ln,
		tp
	)	((tp)((uint64_t)-1 >> (sizeof(uint64_t) * CHAR_BIT - (ln))))

Mask value of type "tp" for the first "ln" bit set.

Examples:: examples/ip_fragmentation/main.c, examples/ip_reassembly/main.c, and examples/l3fwd-power/main.c.

Definition at line 772 of file rte_common.h.

#define RTE_DIM ( a ) (sizeof (a) / sizeof ((a)[0]))

Number of elements in the array.

Examples:: examples/ethtool/ethtool-app/main.c, examples/eventdev_pipeline/pipeline_worker_generic.c, examples/fips_validation/fips_dev_self_test.c, examples/fips_validation/fips_validation_aes.c, examples/fips_validation/fips_validation_ccm.c, examples/fips_validation/fips_validation_cmac.c, examples/fips_validation/fips_validation_hmac.c, examples/fips_validation/fips_validation_sha.c, examples/fips_validation/fips_validation_tdes.c, examples/flow_classify/flow_classify.c, examples/ip_fragmentation/main.c, examples/ip_pipeline/cli.c, examples/ip_pipeline/parser.c, examples/ip_pipeline/pipeline.c, examples/ip_reassembly/main.c, examples/ipsec-secgw/ipsec-secgw.c, examples/ipsec-secgw/ipsec_process.c, examples/ipsec-secgw/parser.c, examples/ipsec-secgw/sa.c, examples/ipsec-secgw/sp4.c, examples/ipsec-secgw/sp6.c, examples/ipv4_multicast/main.c, examples/l2fwd-jobstats/main.c, examples/l3fwd-acl/main.c, examples/l3fwd-graph/main.c, examples/l3fwd-power/main.c, examples/l3fwd/l3fwd_lpm.c, examples/performance-thread/l3fwd-thread/main.c, examples/vm_power_manager/channel_monitor.c, examples/vmdq/main.c, and examples/vmdq_dcb/main.c.

Definition at line 776 of file rte_common.h.

Typedef Documentation

typedef uint64_t phys_addr_t

Physical address

Definition at line 375 of file rte_common.h.

typedef uint64_t rte_iova_t

IO virtual address type. When the physical addressing mode (IOVA as PA) is in use, the translation from an IO virtual address (IOVA) to a physical address is a direct mapping, i.e. the same value. Otherwise, in virtual mode (IOVA as VA), an IOMMU may do the translation.

Definition at line 385 of file rte_common.h.

Function Documentation

static int rte_is_aligned	(	void *	ptr,
		unsigned	align
	)

inlinestatic

Checks if a pointer is aligned to a given power-of-two value

Parameters

ptr	The pointer whose alignment is to be checked
align	The power-of-two value to which the ptr should be aligned

Returns: True(1) where the pointer is correctly aligned, false(0) otherwise

Definition at line 332 of file rte_common.h.

static uint32_t rte_combine32ms1b ( uint32_t x )

inlinestatic

Combines 32b inputs most significant set bits into the least significant bits to construct a value with the same MSBs as x but all 1's under it.

Parameters

x	The integer whose MSBs need to be combined with its LSBs

Returns: The combined value.

Definition at line 412 of file rte_common.h.

static uint64_t rte_combine64ms1b ( uint64_t v )

inlinestatic

Combines 64b inputs most significant set bits into the least significant bits to construct a value with the same MSBs as x but all 1's under it.

Parameters

v	The integer whose MSBs need to be combined with its LSBs

Returns: The combined value.

Definition at line 434 of file rte_common.h.

static int rte_is_power_of_2 ( uint32_t n )

inlinestatic

Returns true if n is a power of 2

Parameters

n	Number to check

Returns: 1 if true, 0 otherwise

Definition at line 460 of file rte_common.h.

static uint32_t rte_align32pow2 ( uint32_t x )

inlinestatic

Aligns input parameter to the next power of 2

Parameters

x	The integer value to align

Returns: Input parameter aligned to the next power of 2

Examples:: examples/bbdev_app/main.c, and examples/ipsec-secgw/sad.c.

Definition at line 475 of file rte_common.h.

static uint32_t rte_align32prevpow2 ( uint32_t x )

inlinestatic

Aligns input parameter to the previous power of 2

Parameters

x	The integer value to align

Returns: Input parameter aligned to the previous power of 2

Definition at line 493 of file rte_common.h.

static uint64_t rte_align64pow2 ( uint64_t v )

inlinestatic

Aligns 64b input parameter to the next power of 2

Parameters

v	The 64b value to align

Returns: Input parameter aligned to the next power of 2

Definition at line 510 of file rte_common.h.

static uint64_t rte_align64prevpow2 ( uint64_t v )

inlinestatic

Aligns 64b input parameter to the previous power of 2

Parameters

v	The 64b value to align

Returns: Input parameter aligned to the previous power of 2

Definition at line 528 of file rte_common.h.

static uint32_t rte_bsf32 ( uint32_t v )

inlinestatic

Searches the input parameter for the least significant set bit (starting from zero). If a least significant 1 bit is found, its bit index is returned. If the content of the input parameter is zero, then the content of the return value is undefined.

Parameters

v	input parameter, should not be zero.

Returns: least significant set bit in the input parameter.

Definition at line 571 of file rte_common.h.

static int rte_bsf32_safe	(	uint64_t	v,
		uint32_t *	pos
	)

inlinestatic

Searches the input parameter for the least significant set bit (starting from zero). Safe version (checks for input parameter being zero).

Warning: pos must be a valid pointer. It is not checked!

Parameters

v	The input parameter.
pos	If `v` was not 0, this value will contain position of least significant bit within the input parameter.

Returns: Returns 0 if v was 0, otherwise returns 1.

Definition at line 591 of file rte_common.h.

static uint32_t rte_log2_u32 ( uint32_t v )

inlinestatic

Return the rounded-up log2 of a integer.

Note: Contrary to the logarithm mathematical operation, rte_log2_u32(0) == 0 and not -inf.

Parameters

v	The input parameter.

Returns: The rounded-up log2 of the input, or 0 if the input is 0.

Definition at line 612 of file rte_common.h.

static int rte_fls_u32 ( uint32_t x )

inlinestatic

Return the last (most-significant) bit set.

Note: The last (most significant) bit is at position 32.; rte_fls_u32(0) = 0, rte_fls_u32(1) = 1, rte_fls_u32(0x80000000) = 32

Parameters

x	The input parameter.

Returns: The last (most-significant) bit set, or 0 if the input is 0.

Definition at line 633 of file rte_common.h.

static int rte_bsf64 ( uint64_t v )

inlinestatic

Searches the input parameter for the least significant set bit (starting from zero). If a least significant 1 bit is found, its bit index is returned. If the content of the input parameter is zero, then the content of the return value is undefined.

Parameters

v	input parameter, should not be zero.

Returns: least significant set bit in the input parameter.

Definition at line 650 of file rte_common.h.

static int rte_bsf64_safe	(	uint64_t	v,
		uint32_t *	pos
	)

inlinestatic

Searches the input parameter for the least significant set bit (starting from zero). Safe version (checks for input parameter being zero).

Warning: pos must be a valid pointer. It is not checked!

Parameters

v	The input parameter.
pos	If `v` was not 0, this value will contain position of least significant bit within the input parameter.

Returns: Returns 0 if v was 0, otherwise returns 1.

Definition at line 670 of file rte_common.h.

static int rte_fls_u64 ( uint64_t x )

inlinestatic

Return the last (most-significant) bit set.

Note: The last (most significant) bit is at position 64.; rte_fls_u64(0) = 0, rte_fls_u64(1) = 1, rte_fls_u64(0x8000000000000000) = 64

Parameters

x	The input parameter.

Returns: The last (most-significant) bit set, or 0 if the input is 0.

Definition at line 692 of file rte_common.h.

static uint32_t rte_log2_u64 ( uint64_t v )

inlinestatic

Return the rounded-up log2 of a 64-bit integer.

Note: Contrary to the logarithm mathematical operation, rte_log2_u64(0) == 0 and not -inf.

Parameters

v	The input parameter.

Returns: The rounded-up log2 of the input, or 0 if the input is 0.

Definition at line 709 of file rte_common.h.

static uint64_t rte_str_to_size ( const char * str )

inlinestatic

Converts a numeric string to the equivalent uint64_t value. As well as straight number conversion, also recognises the suffixes k, m and g for kilobytes, megabytes and gigabytes respectively.

If a negative number is passed in i.e. a string with the first non-black character being "-", zero is returned. Zero is also returned in the case of an error with the strtoull call in the function.

Parameters

str	String containing number to convert.

Returns: Number.

Definition at line 793 of file rte_common.h.

__rte_noreturn void rte_exit	(	int	exit_code,
		const char *	format,
			...
	)

Function to terminate the application immediately, printing an error message and returning the exit_code back to the shell.

This function never returns

Parameters

exit_code	The exit code to be returned by the application
format	The format string to be used for printing the message. This can include printf format characters which will be expanded using any further parameters to the function.

Examples:: examples/bbdev_app/main.c, examples/bond/main.c, examples/distributor/main.c, examples/ethtool/ethtool-app/main.c, examples/eventdev_pipeline/main.c, examples/eventdev_pipeline/pipeline_worker_generic.c, examples/eventdev_pipeline/pipeline_worker_tx.c, examples/fips_validation/main.c, examples/flow_classify/flow_classify.c, examples/flow_filtering/main.c, examples/ioat/ioatfwd.c, examples/ip_fragmentation/main.c, examples/ip_reassembly/main.c, examples/ipsec-secgw/ipsec-secgw.c, examples/ipsec-secgw/rt.c, examples/ipsec-secgw/sa.c, examples/ipsec-secgw/sp4.c, examples/ipsec-secgw/sp6.c, examples/ipv4_multicast/main.c, examples/kni/main.c, examples/l2fwd-cat/l2fwd-cat.c, examples/l2fwd-crypto/main.c, examples/l2fwd-jobstats/main.c, examples/l2fwd-keepalive/main.c, examples/l2fwd/main.c, examples/l3fwd-acl/main.c, examples/l3fwd-graph/main.c, examples/l3fwd-power/main.c, examples/l3fwd/l3fwd_em.c, examples/l3fwd/l3fwd_event.c, examples/l3fwd/l3fwd_lpm.c, examples/l3fwd/main.c, examples/link_status_interrupt/main.c, examples/multi_process/client_server_mp/mp_client/client.c, examples/multi_process/client_server_mp/mp_server/init.c, examples/multi_process/simple_mp/main.c, examples/multi_process/symmetric_mp/main.c, examples/ntb/ntb_fwd.c, examples/packet_ordering/main.c, examples/performance-thread/l3fwd-thread/main.c, examples/performance-thread/pthread_shim/main.c, examples/ptpclient/ptpclient.c, examples/qos_meter/main.c, examples/qos_sched/cfg_file.c, examples/qos_sched/init.c, examples/rxtx_callbacks/main.c, examples/server_node_efd/node/node.c, examples/server_node_efd/server/init.c, examples/service_cores/main.c, examples/skeleton/basicfwd.c, examples/tep_termination/main.c, examples/tep_termination/vxlan_setup.c, examples/vdpa/main.c, examples/vhost/main.c, examples/vhost_blk/vhost_blk.c, examples/vhost_crypto/main.c, examples/vm_power_manager/guest_cli/main.c, examples/vm_power_manager/main.c, examples/vmdq/main.c, and examples/vmdq_dcb/main.c.

Variable Documentation

__extension__ typedef void* RTE_MARKER[0]

Generic marker for any place in a structure.

Definition at line 391 of file rte_common.h.

__extension__ typedef uint8_t RTE_MARKER8[0]

Marker for 1B alignment in a structure.

Definition at line 393 of file rte_common.h.

__extension__ typedef uint16_t RTE_MARKER16[0]

Marker for 2B alignment in a structure.

Definition at line 395 of file rte_common.h.

__extension__ typedef uint32_t RTE_MARKER32[0]

Marker for 4B alignment in a structure.

Definition at line 397 of file rte_common.h.

__extension__ typedef uint64_t RTE_MARKER64[0]

Marker for 8B alignment in a structure.

Definition at line 399 of file rte_common.h.

Macros

Typedefs

Functions

Variables

Detailed Description

Macro Definition Documentation

Typedef Documentation

Function Documentation

Variable Documentation