-#if RTE_MAX_LCORE == 1
-#define MPLOCKED /**< No need to insert MP lock prefix. */
-#else
-#define MPLOCKED "lock ; " /**< Insert MP lock prefix. */
-#endif
-
-/**
- * General memory barrier.
- *
- * Guarantees that the LOAD and STORE operations generated before the
- * barrier occur before the LOAD and STORE operations generated after.
- */
-#define rte_mb() asm volatile(MPLOCKED "addl $0,(%%esp)" : : : "memory")
-
-/**
- * Write memory barrier.
- *
- * Guarantees that the STORE operations generated before the barrier
- * occur before the STORE operations generated after.
- */
-#define rte_wmb() asm volatile(MPLOCKED "addl $0,(%%esp)" : : : "memory")
-
-/**
- * Read memory barrier.
- *
- * Guarantees that the LOAD operations generated before the barrier
- * occur before the LOAD operations generated after.
- */
-#define rte_rmb() asm volatile(MPLOCKED "addl $0,(%%esp)" : : : "memory")
-
-/*------------------------- 16 bit atomic operations -------------------------*/
-
-/**
- * Atomic compare and set.
- *
- * (atomic) equivalent to:
- * if (*dst == exp)
- * *dst = src (all 16-bit words)
- *
- * @param dst
- * The destination location into which the value will be written.
- * @param exp
- * The expected value.
- * @param src
- * The new value.
- * @return
- * Non-zero on success; 0 on failure.
- */
-static inline int
-rte_atomic16_cmpset(volatile uint16_t *dst, uint16_t exp, uint16_t src)
-{
- uint8_t res;
-
- asm volatile(
- MPLOCKED
- "cmpxchgw %[src], %[dst];"
- "sete %[res];"
- : [res] "=a" (res), /* output */
- [dst] "=m" (*dst)
- : [src] "r" (src), /* input */
- "a" (exp),
- "m" (*dst)
- : "memory"); /* no-clobber list */
- return res;
-}
-
-/**
- * The atomic counter structure.
- */
-typedef struct {
- volatile int16_t cnt; /**< An internal counter value. */
-} rte_atomic16_t;
-
-/**
- * Static initializer for an atomic counter.
- */
-#define RTE_ATOMIC16_INIT(val) { (val) }
-
-/**
- * Initialize an atomic counter.
- *
- * @param v
- * A pointer to the atomic counter.
- */
-static inline void
-rte_atomic16_init(rte_atomic16_t *v)
-{
- v->cnt = 0;
-}
-
-/**
- * Atomically read a 16-bit value from a counter.
- *
- * @param v
- * A pointer to the atomic counter.
- * @return
- * The value of the counter.
- */
-static inline int16_t
-rte_atomic16_read(const rte_atomic16_t *v)
-{
- return v->cnt;
-}
-
-/**
- * Atomically set a counter to a 16-bit value.
- *
- * @param v
- * A pointer to the atomic counter.
- * @param new_value
- * The new value for the counter.
- */
-static inline void
-rte_atomic16_set(rte_atomic16_t *v, int16_t new_value)
-{
- v->cnt = new_value;
-}
-
-/**
- * Atomically add a 16-bit value to an atomic counter.
- *
- * @param v
- * A pointer to the atomic counter.
- * @param inc
- * The value to be added to the counter.
- */
-static inline void
-rte_atomic16_add(rte_atomic16_t *v, int16_t inc)
-{
- asm volatile(
- MPLOCKED
- "addw %[inc], %[cnt]"
- : [cnt] "=m" (v->cnt) /* output */
- : [inc] "ir" (inc), /* input */
- "m" (v->cnt)
- );
-}
-
-/**
- * Atomically subtract a 16-bit value from an atomic counter.
- *
- * @param v
- * A pointer to the atomic counter.
- * @param dec
- * The value to be subtracted from the counter.
- */
-static inline void
-rte_atomic16_sub(rte_atomic16_t *v, int16_t dec)
-{
- asm volatile(
- MPLOCKED
- "subw %[dec], %[cnt]"
- : [cnt] "=m" (v->cnt) /* output */
- : [dec] "ir" (dec), /* input */
- "m" (v->cnt)
- );
-}
-
-/**
- * Atomically increment a counter by one.
- *
- * @param v
- * A pointer to the atomic counter.
- */
-static inline void
-rte_atomic16_inc(rte_atomic16_t *v)
-{
- asm volatile(
- MPLOCKED
- "incw %[cnt]"
- : [cnt] "=m" (v->cnt) /* output */
- : "m" (v->cnt) /* input */
- );
-}
-
-/**
- * Atomically decrement a counter by one.
- *
- * @param v
- * A pointer to the atomic counter.
- */
-static inline void
-rte_atomic16_dec(rte_atomic16_t *v)
-{
- asm volatile(
- MPLOCKED
- "decw %[cnt]"
- : [cnt] "=m" (v->cnt) /* output */
- : "m" (v->cnt) /* input */
- );
-}
-
-/**
- * Atomically add a 16-bit value to a counter and return the result.
- *
- * Atomically adds the 16-bits value (inc) to the atomic counter (v) and
- * returns the value of v after addition.
- *
- * @param v
- * A pointer to the atomic counter.
- * @param inc
- * The value to be added to the counter.
- * @return
- * The value of v after the addition.
- */
-static inline int16_t
-rte_atomic16_add_return(rte_atomic16_t *v, int16_t inc)
-{
- int16_t prev = inc;
-
- asm volatile(
- MPLOCKED
- "xaddw %[prev], %[cnt]"
- : [prev] "+r" (prev), /* output */
- [cnt] "=m" (v->cnt)
- : "m" (v->cnt) /* input */
- );
- return (int16_t)(prev + inc);
-}
-
-/**
- * Atomically subtract a 16-bit value from a counter and return
- * the result.
- *
- * Atomically subtracts the 16-bit value (inc) from the atomic counter
- * (v) and returns the value of v after the subtraction.
- *
- * @param v
- * A pointer to the atomic counter.
- * @param dec
- * The value to be subtracted from the counter.
- * @return
- * The value of v after the subtraction.
- */
-static inline int16_t
-rte_atomic16_sub_return(rte_atomic16_t *v, int16_t dec)
-{
- return rte_atomic16_add_return(v, (int16_t)-dec);
-}
-
-/**
- * Atomically increment a 16-bit counter by one and test.
- *
- * Atomically increments the atomic counter (v) by one and returns true if
- * the result is 0, or false in all other cases.
- *
- * @param v
- * A pointer to the atomic counter.
- * @return
- * True if the result after the increment operation is 0; false otherwise.
- */
-static inline int rte_atomic16_inc_and_test(rte_atomic16_t *v)
-{
- uint8_t ret;
-
- asm volatile(
- MPLOCKED
- "incw %[cnt] ; "
- "sete %[ret]"
- : [cnt] "+m" (v->cnt), /* output */
- [ret] "=qm" (ret)
- );
- return (ret != 0);
-}
-
-/**
- * Atomically decrement a 16-bit counter by one and test.
- *
- * Atomically decrements the atomic counter (v) by one and returns true if
- * the result is 0, or false in all other cases.
- *
- * @param v
- * A pointer to the atomic counter.
- * @return
- * True if the result after the decrement operation is 0; false otherwise.
- */
-static inline int rte_atomic16_dec_and_test(rte_atomic16_t *v)
-{
- uint8_t ret;
-
- asm volatile(MPLOCKED
- "decw %[cnt] ; "
- "sete %[ret]"
- : [cnt] "+m" (v->cnt), /* output */
- [ret] "=qm" (ret)
- );
- return (ret != 0);
-}
-
-/**
- * Atomically test and set a 16-bit atomic counter.
- *
- * If the counter value is already set, return 0 (failed). Otherwise, set
- * the counter value to 1 and return 1 (success).
- *
- * @param v
- * A pointer to the atomic counter.
- * @return
- * 0 if failed; else 1, success.
- */
-static inline int rte_atomic16_test_and_set(rte_atomic16_t *v)
-{
- return rte_atomic16_cmpset((volatile uint16_t *)&v->cnt, 0, 1);
-}
-
-/**
- * Atomically set a 16-bit counter to 0.
- *
- * @param v
- * A pointer to the atomic counter.
- */
-static inline void rte_atomic16_clear(rte_atomic16_t *v)
-{
- v->cnt = 0;
-}
-
-/*------------------------- 32 bit atomic operations -------------------------*/
-
-/**
- * Atomic compare and set.
- *
- * (atomic) equivalent to:
- * if (*dst == exp)
- * *dst = src (all 32-bit words)
- *
- * @param dst
- * The destination location into which the value will be written.
- * @param exp
- * The expected value.
- * @param src
- * The new value.
- * @return
- * Non-zero on success; 0 on failure.
- */
-static inline int
-rte_atomic32_cmpset(volatile uint32_t *dst, uint32_t exp, uint32_t src)
-{
- uint8_t res;
-
- asm volatile(
- MPLOCKED
- "cmpxchgl %[src], %[dst];"
- "sete %[res];"
- : [res] "=a" (res), /* output */
- [dst] "=m" (*dst)
- : [src] "r" (src), /* input */
- "a" (exp),
- "m" (*dst)
- : "memory"); /* no-clobber list */
- return res;
-}
-
-/**
- * The atomic counter structure.
- */
-typedef struct {
- volatile int32_t cnt; /**< An internal counter value. */
-} rte_atomic32_t;
-
-/**
- * Static initializer for an atomic counter.
- */
-#define RTE_ATOMIC32_INIT(val) { (val) }
-
-/**
- * Initialize an atomic counter.
- *
- * @param v
- * A pointer to the atomic counter.
- */
-static inline void
-rte_atomic32_init(rte_atomic32_t *v)
-{
- v->cnt = 0;
-}
-
-/**
- * Atomically read a 32-bit value from a counter.
- *
- * @param v
- * A pointer to the atomic counter.
- * @return
- * The value of the counter.
- */
-static inline int32_t
-rte_atomic32_read(const rte_atomic32_t *v)
-{
- return v->cnt;
-}
-
-/**
- * Atomically set a counter to a 32-bit value.
- *
- * @param v
- * A pointer to the atomic counter.
- * @param new_value
- * The new value for the counter.
- */
-static inline void
-rte_atomic32_set(rte_atomic32_t *v, int32_t new_value)
-{
- v->cnt = new_value;
-}
-
-/**
- * Atomically add a 32-bit value to an atomic counter.
- *
- * @param v
- * A pointer to the atomic counter.
- * @param inc
- * The value to be added to the counter.
- */
-static inline void
-rte_atomic32_add(rte_atomic32_t *v, int32_t inc)
-{
- asm volatile(
- MPLOCKED
- "addl %[inc], %[cnt]"
- : [cnt] "=m" (v->cnt) /* output */
- : [inc] "ir" (inc), /* input */
- "m" (v->cnt)
- );
-}
-
-/**
- * Atomically subtract a 32-bit value from an atomic counter.
- *
- * @param v
- * A pointer to the atomic counter.
- * @param dec
- * The value to be subtracted from the counter.
- */
-static inline void
-rte_atomic32_sub(rte_atomic32_t *v, int32_t dec)
-{
- asm volatile(
- MPLOCKED
- "subl %[dec], %[cnt]"
- : [cnt] "=m" (v->cnt) /* output */
- : [dec] "ir" (dec), /* input */
- "m" (v->cnt)
- );
-}
-
-/**
- * Atomically increment a counter by one.
- *
- * @param v
- * A pointer to the atomic counter.
- */
-static inline void
-rte_atomic32_inc(rte_atomic32_t *v)
-{
- asm volatile(
- MPLOCKED
- "incl %[cnt]"
- : [cnt] "=m" (v->cnt) /* output */
- : "m" (v->cnt) /* input */
- );
-}
-
-/**
- * Atomically decrement a counter by one.
- *
- * @param v
- * A pointer to the atomic counter.
- */
-static inline void
-rte_atomic32_dec(rte_atomic32_t *v)
-{
- asm volatile(
- MPLOCKED
- "decl %[cnt]"
- : [cnt] "=m" (v->cnt) /* output */
- : "m" (v->cnt) /* input */
- );
-}
-
-/**
- * Atomically add a 32-bit value to a counter and return the result.
- *
- * Atomically adds the 32-bits value (inc) to the atomic counter (v) and
- * returns the value of v after addition.
- *
- * @param v
- * A pointer to the atomic counter.
- * @param inc
- * The value to be added to the counter.
- * @return
- * The value of v after the addition.
- */
-static inline int32_t
-rte_atomic32_add_return(rte_atomic32_t *v, int32_t inc)
-{
- int32_t prev = inc;
-
- asm volatile(
- MPLOCKED
- "xaddl %[prev], %[cnt]"
- : [prev] "+r" (prev), /* output */
- [cnt] "=m" (v->cnt)
- : "m" (v->cnt) /* input */
- );
- return (int32_t)(prev + inc);
-}
-
-/**
- * Atomically subtract a 32-bit value from a counter and return
- * the result.
- *
- * Atomically subtracts the 32-bit value (inc) from the atomic counter
- * (v) and returns the value of v after the subtraction.
- *
- * @param v
- * A pointer to the atomic counter.
- * @param dec
- * The value to be subtracted from the counter.
- * @return
- * The value of v after the subtraction.
- */
-static inline int32_t
-rte_atomic32_sub_return(rte_atomic32_t *v, int32_t dec)
-{
- return rte_atomic32_add_return(v, -dec);
-}
-
-/**
- * Atomically increment a 32-bit counter by one and test.
- *
- * Atomically increments the atomic counter (v) by one and returns true if
- * the result is 0, or false in all other cases.
- *
- * @param v
- * A pointer to the atomic counter.
- * @return
- * True if the result after the increment operation is 0; false otherwise.
- */
-static inline int rte_atomic32_inc_and_test(rte_atomic32_t *v)
-{
- uint8_t ret;
-
- asm volatile(
- MPLOCKED
- "incl %[cnt] ; "
- "sete %[ret]"
- : [cnt] "+m" (v->cnt), /* output */
- [ret] "=qm" (ret)
- );
- return (ret != 0);
-}
-
-/**
- * Atomically decrement a 32-bit counter by one and test.
- *
- * Atomically decrements the atomic counter (v) by one and returns true if
- * the result is 0, or false in all other cases.
- *
- * @param v
- * A pointer to the atomic counter.
- * @return
- * True if the result after the decrement operation is 0; false otherwise.
- */
-static inline int rte_atomic32_dec_and_test(rte_atomic32_t *v)
-{
- uint8_t ret;
-
- asm volatile(MPLOCKED
- "decl %[cnt] ; "
- "sete %[ret]"
- : [cnt] "+m" (v->cnt), /* output */
- [ret] "=qm" (ret)
- );
- return (ret != 0);
-}
-
-/**
- * Atomically test and set a 32-bit atomic counter.
- *
- * If the counter value is already set, return 0 (failed). Otherwise, set
- * the counter value to 1 and return 1 (success).
- *
- * @param v
- * A pointer to the atomic counter.
- * @return
- * 0 if failed; else 1, success.
- */
-static inline int rte_atomic32_test_and_set(rte_atomic32_t *v)
-{
- return rte_atomic32_cmpset((volatile uint32_t *)&v->cnt, 0, 1);
-}
-
-/**
- * Atomically set a 32-bit counter to 0.
- *
- * @param v
- * A pointer to the atomic counter.
- */
-static inline void rte_atomic32_clear(rte_atomic32_t *v)
-{
- v->cnt = 0;
-}