#include <rte_debug.h>
#include <rte_malloc.h>
-#include <rte_prefetch.h>
#include <rte_errno.h>
#include <rte_memory.h>
-#include <rte_branch_prediction.h>
-#include <rte_fib.h>
#include <rte_rib.h>
+#include <rte_fib.h>
#include "dir24_8.h"
#define DIR24_8_NAMESIZE 64
-#define DIR24_8_TBL24_NUM_ENT (1 << 24)
-#define DIR24_8_TBL8_GRP_NUM_ENT 256U
-#define DIR24_8_EXT_ENT 1
-#define DIR24_8_TBL24_MASK 0xffffff00
-
-#define BITMAP_SLAB_BIT_SIZE_LOG2 6
-#define BITMAP_SLAB_BIT_SIZE (1 << BITMAP_SLAB_BIT_SIZE_LOG2)
-#define BITMAP_SLAB_BITMASK (BITMAP_SLAB_BIT_SIZE - 1)
-
-struct dir24_8_tbl {
- uint32_t number_tbl8s; /**< Total number of tbl8s */
- uint32_t rsvd_tbl8s; /**< Number of reserved tbl8s */
- uint32_t cur_tbl8s; /**< Current number of tbl8s */
- enum rte_fib_dir24_8_nh_sz nh_sz; /**< Size of nexthop entry */
- uint64_t def_nh; /**< Default next hop */
- uint64_t *tbl8; /**< tbl8 table. */
- uint64_t *tbl8_idxes; /**< bitmap containing free tbl8 idxes*/
- /* tbl24 table. */
- __extension__ uint64_t tbl24[0] __rte_cache_aligned;
-};
-
#define ROUNDUP(x, y) RTE_ALIGN_CEIL(x, (1 << (32 - y)))
-static inline void *
-get_tbl24_p(struct dir24_8_tbl *dp, uint32_t ip, uint8_t nh_sz)
-{
- return (void *)&((uint8_t *)dp->tbl24)[(ip &
- DIR24_8_TBL24_MASK) >> (8 - nh_sz)];
-}
-
-static inline uint8_t
-bits_in_nh(uint8_t nh_sz)
-{
- return 8 * (1 << nh_sz);
-}
-
-static inline uint64_t
-get_max_nh(uint8_t nh_sz)
-{
- return ((1ULL << (bits_in_nh(nh_sz) - 1)) - 1);
-}
-
-static inline uint32_t
-get_tbl24_idx(uint32_t ip)
-{
- return ip >> 8;
-}
-
-static inline uint32_t
-get_tbl8_idx(uint32_t res, uint32_t ip)
-{
- return (res >> 1) * DIR24_8_TBL8_GRP_NUM_ENT + (uint8_t)ip;
-}
-
-static inline uint64_t
-lookup_msk(uint8_t nh_sz)
-{
- return ((1ULL << ((1 << (nh_sz + 3)) - 1)) << 1) - 1;
-}
-
-static inline uint8_t
-get_psd_idx(uint32_t val, uint8_t nh_sz)
-{
- return val & ((1 << (3 - nh_sz)) - 1);
-}
-
-static inline uint32_t
-get_tbl_idx(uint32_t val, uint8_t nh_sz)
-{
- return val >> (3 - nh_sz);
-}
-
-static inline uint64_t
-get_tbl24(struct dir24_8_tbl *dp, uint32_t ip, uint8_t nh_sz)
-{
- return ((dp->tbl24[get_tbl_idx(get_tbl24_idx(ip), nh_sz)] >>
- (get_psd_idx(get_tbl24_idx(ip), nh_sz) *
- bits_in_nh(nh_sz))) & lookup_msk(nh_sz));
-}
-
-static inline uint64_t
-get_tbl8(struct dir24_8_tbl *dp, uint32_t res, uint32_t ip, uint8_t nh_sz)
-{
- return ((dp->tbl8[get_tbl_idx(get_tbl8_idx(res, ip), nh_sz)] >>
- (get_psd_idx(get_tbl8_idx(res, ip), nh_sz) *
- bits_in_nh(nh_sz))) & lookup_msk(nh_sz));
-}
-
-static inline int
-is_entry_extended(uint64_t ent)
-{
- return (ent & DIR24_8_EXT_ENT) == DIR24_8_EXT_ENT;
-}
-
-#define LOOKUP_FUNC(suffix, type, bulk_prefetch, nh_sz) \
-static void dir24_8_lookup_bulk_##suffix(void *p, const uint32_t *ips, \
- uint64_t *next_hops, const unsigned int n) \
-{ \
- struct dir24_8_tbl *dp = (struct dir24_8_tbl *)p; \
- uint64_t tmp; \
- uint32_t i; \
- uint32_t prefetch_offset = \
- RTE_MIN((unsigned int)bulk_prefetch, n); \
- \
- for (i = 0; i < prefetch_offset; i++) \
- rte_prefetch0(get_tbl24_p(dp, ips[i], nh_sz)); \
- for (i = 0; i < (n - prefetch_offset); i++) { \
- rte_prefetch0(get_tbl24_p(dp, \
- ips[i + prefetch_offset], nh_sz)); \
- tmp = ((type *)dp->tbl24)[ips[i] >> 8]; \
- if (unlikely(is_entry_extended(tmp))) \
- tmp = ((type *)dp->tbl8)[(uint8_t)ips[i] + \
- ((tmp >> 1) * DIR24_8_TBL8_GRP_NUM_ENT)]; \
- next_hops[i] = tmp >> 1; \
- } \
- for (; i < n; i++) { \
- tmp = ((type *)dp->tbl24)[ips[i] >> 8]; \
- if (unlikely(is_entry_extended(tmp))) \
- tmp = ((type *)dp->tbl8)[(uint8_t)ips[i] + \
- ((tmp >> 1) * DIR24_8_TBL8_GRP_NUM_ENT)]; \
- next_hops[i] = tmp >> 1; \
- } \
-} \
-
-LOOKUP_FUNC(1b, uint8_t, 5, 0)
-LOOKUP_FUNC(2b, uint16_t, 6, 1)
-LOOKUP_FUNC(4b, uint32_t, 15, 2)
-LOOKUP_FUNC(8b, uint64_t, 12, 3)
-
-static inline void
-dir24_8_lookup_bulk(struct dir24_8_tbl *dp, const uint32_t *ips,
- uint64_t *next_hops, const unsigned int n, uint8_t nh_sz)
-{
- uint64_t tmp;
- uint32_t i;
- uint32_t prefetch_offset = RTE_MIN(15U, n);
-
- for (i = 0; i < prefetch_offset; i++)
- rte_prefetch0(get_tbl24_p(dp, ips[i], nh_sz));
- for (i = 0; i < (n - prefetch_offset); i++) {
- rte_prefetch0(get_tbl24_p(dp, ips[i + prefetch_offset],
- nh_sz));
- tmp = get_tbl24(dp, ips[i], nh_sz);
- if (unlikely(is_entry_extended(tmp)))
- tmp = get_tbl8(dp, tmp, ips[i], nh_sz);
-
- next_hops[i] = tmp >> 1;
- }
- for (; i < n; i++) {
- tmp = get_tbl24(dp, ips[i], nh_sz);
- if (unlikely(is_entry_extended(tmp)))
- tmp = get_tbl8(dp, tmp, ips[i], nh_sz);
-
- next_hops[i] = tmp >> 1;
- }
-}
-
-static void
-dir24_8_lookup_bulk_0(void *p, const uint32_t *ips,
- uint64_t *next_hops, const unsigned int n)
-{
- struct dir24_8_tbl *dp = (struct dir24_8_tbl *)p;
-
- dir24_8_lookup_bulk(dp, ips, next_hops, n, 0);
-}
-
-static void
-dir24_8_lookup_bulk_1(void *p, const uint32_t *ips,
- uint64_t *next_hops, const unsigned int n)
-{
- struct dir24_8_tbl *dp = (struct dir24_8_tbl *)p;
-
- dir24_8_lookup_bulk(dp, ips, next_hops, n, 1);
-}
-
-static void
-dir24_8_lookup_bulk_2(void *p, const uint32_t *ips,
- uint64_t *next_hops, const unsigned int n)
-{
- struct dir24_8_tbl *dp = (struct dir24_8_tbl *)p;
-
- dir24_8_lookup_bulk(dp, ips, next_hops, n, 2);
-}
-
-static void
-dir24_8_lookup_bulk_3(void *p, const uint32_t *ips,
- uint64_t *next_hops, const unsigned int n)
-{
- struct dir24_8_tbl *dp = (struct dir24_8_tbl *)p;
-
- dir24_8_lookup_bulk(dp, ips, next_hops, n, 3);
-}
-
-static void
-dir24_8_lookup_bulk_uni(void *p, const uint32_t *ips,
- uint64_t *next_hops, const unsigned int n)
-{
- struct dir24_8_tbl *dp = (struct dir24_8_tbl *)p;
- uint64_t tmp;
- uint32_t i;
- uint32_t prefetch_offset = RTE_MIN(15U, n);
- uint8_t nh_sz = dp->nh_sz;
-
- for (i = 0; i < prefetch_offset; i++)
- rte_prefetch0(get_tbl24_p(dp, ips[i], nh_sz));
- for (i = 0; i < (n - prefetch_offset); i++) {
- rte_prefetch0(get_tbl24_p(dp, ips[i + prefetch_offset],
- nh_sz));
- tmp = get_tbl24(dp, ips[i], nh_sz);
- if (unlikely(is_entry_extended(tmp)))
- tmp = get_tbl8(dp, tmp, ips[i], nh_sz);
-
- next_hops[i] = tmp >> 1;
- }
- for (; i < n; i++) {
- tmp = get_tbl24(dp, ips[i], nh_sz);
- if (unlikely(is_entry_extended(tmp)))
- tmp = get_tbl8(dp, tmp, ips[i], nh_sz);
-
- next_hops[i] = tmp >> 1;
- }
-}
-
static inline rte_fib_lookup_fn_t
get_scalar_fn(enum rte_fib_dir24_8_nh_sz nh_sz)
{
#ifndef _DIR24_8_H_
#define _DIR24_8_H_
+#include <rte_prefetch.h>
+#include <rte_branch_prediction.h>
+
/**
* @file
* DIR24_8 algorithm
extern "C" {
#endif
+#define DIR24_8_TBL24_NUM_ENT (1 << 24)
+#define DIR24_8_TBL8_GRP_NUM_ENT 256U
+#define DIR24_8_EXT_ENT 1
+#define DIR24_8_TBL24_MASK 0xffffff00
+
+#define BITMAP_SLAB_BIT_SIZE_LOG2 6
+#define BITMAP_SLAB_BIT_SIZE (1 << BITMAP_SLAB_BIT_SIZE_LOG2)
+#define BITMAP_SLAB_BITMASK (BITMAP_SLAB_BIT_SIZE - 1)
+
+struct dir24_8_tbl {
+ uint32_t number_tbl8s; /**< Total number of tbl8s */
+ uint32_t rsvd_tbl8s; /**< Number of reserved tbl8s */
+ uint32_t cur_tbl8s; /**< Current number of tbl8s */
+ enum rte_fib_dir24_8_nh_sz nh_sz; /**< Size of nexthop entry */
+ uint64_t def_nh; /**< Default next hop */
+ uint64_t *tbl8; /**< tbl8 table. */
+ uint64_t *tbl8_idxes; /**< bitmap containing free tbl8 idxes*/
+ /* tbl24 table. */
+ __extension__ uint64_t tbl24[0] __rte_cache_aligned;
+};
+
+static inline void *
+get_tbl24_p(struct dir24_8_tbl *dp, uint32_t ip, uint8_t nh_sz)
+{
+ return (void *)&((uint8_t *)dp->tbl24)[(ip &
+ DIR24_8_TBL24_MASK) >> (8 - nh_sz)];
+}
+
+static inline uint8_t
+bits_in_nh(uint8_t nh_sz)
+{
+ return 8 * (1 << nh_sz);
+}
+
+static inline uint64_t
+get_max_nh(uint8_t nh_sz)
+{
+ return ((1ULL << (bits_in_nh(nh_sz) - 1)) - 1);
+}
+
+static inline uint32_t
+get_tbl24_idx(uint32_t ip)
+{
+ return ip >> 8;
+}
+
+static inline uint32_t
+get_tbl8_idx(uint32_t res, uint32_t ip)
+{
+ return (res >> 1) * DIR24_8_TBL8_GRP_NUM_ENT + (uint8_t)ip;
+}
+
+static inline uint64_t
+lookup_msk(uint8_t nh_sz)
+{
+ return ((1ULL << ((1 << (nh_sz + 3)) - 1)) << 1) - 1;
+}
+
+static inline uint8_t
+get_psd_idx(uint32_t val, uint8_t nh_sz)
+{
+ return val & ((1 << (3 - nh_sz)) - 1);
+}
+
+static inline uint32_t
+get_tbl_idx(uint32_t val, uint8_t nh_sz)
+{
+ return val >> (3 - nh_sz);
+}
+
+static inline uint64_t
+get_tbl24(struct dir24_8_tbl *dp, uint32_t ip, uint8_t nh_sz)
+{
+ return ((dp->tbl24[get_tbl_idx(get_tbl24_idx(ip), nh_sz)] >>
+ (get_psd_idx(get_tbl24_idx(ip), nh_sz) *
+ bits_in_nh(nh_sz))) & lookup_msk(nh_sz));
+}
+
+static inline uint64_t
+get_tbl8(struct dir24_8_tbl *dp, uint32_t res, uint32_t ip, uint8_t nh_sz)
+{
+ return ((dp->tbl8[get_tbl_idx(get_tbl8_idx(res, ip), nh_sz)] >>
+ (get_psd_idx(get_tbl8_idx(res, ip), nh_sz) *
+ bits_in_nh(nh_sz))) & lookup_msk(nh_sz));
+}
+
+static inline int
+is_entry_extended(uint64_t ent)
+{
+ return (ent & DIR24_8_EXT_ENT) == DIR24_8_EXT_ENT;
+}
+
+#define LOOKUP_FUNC(suffix, type, bulk_prefetch, nh_sz) \
+static inline void dir24_8_lookup_bulk_##suffix(void *p, const uint32_t *ips, \
+ uint64_t *next_hops, const unsigned int n) \
+{ \
+ struct dir24_8_tbl *dp = (struct dir24_8_tbl *)p; \
+ uint64_t tmp; \
+ uint32_t i; \
+ uint32_t prefetch_offset = \
+ RTE_MIN((unsigned int)bulk_prefetch, n); \
+ \
+ for (i = 0; i < prefetch_offset; i++) \
+ rte_prefetch0(get_tbl24_p(dp, ips[i], nh_sz)); \
+ for (i = 0; i < (n - prefetch_offset); i++) { \
+ rte_prefetch0(get_tbl24_p(dp, \
+ ips[i + prefetch_offset], nh_sz)); \
+ tmp = ((type *)dp->tbl24)[ips[i] >> 8]; \
+ if (unlikely(is_entry_extended(tmp))) \
+ tmp = ((type *)dp->tbl8)[(uint8_t)ips[i] + \
+ ((tmp >> 1) * DIR24_8_TBL8_GRP_NUM_ENT)]; \
+ next_hops[i] = tmp >> 1; \
+ } \
+ for (; i < n; i++) { \
+ tmp = ((type *)dp->tbl24)[ips[i] >> 8]; \
+ if (unlikely(is_entry_extended(tmp))) \
+ tmp = ((type *)dp->tbl8)[(uint8_t)ips[i] + \
+ ((tmp >> 1) * DIR24_8_TBL8_GRP_NUM_ENT)]; \
+ next_hops[i] = tmp >> 1; \
+ } \
+} \
+
+LOOKUP_FUNC(1b, uint8_t, 5, 0)
+LOOKUP_FUNC(2b, uint16_t, 6, 1)
+LOOKUP_FUNC(4b, uint32_t, 15, 2)
+LOOKUP_FUNC(8b, uint64_t, 12, 3)
+
+static inline void
+dir24_8_lookup_bulk(struct dir24_8_tbl *dp, const uint32_t *ips,
+ uint64_t *next_hops, const unsigned int n, uint8_t nh_sz)
+{
+ uint64_t tmp;
+ uint32_t i;
+ uint32_t prefetch_offset = RTE_MIN(15U, n);
+
+ for (i = 0; i < prefetch_offset; i++)
+ rte_prefetch0(get_tbl24_p(dp, ips[i], nh_sz));
+ for (i = 0; i < (n - prefetch_offset); i++) {
+ rte_prefetch0(get_tbl24_p(dp, ips[i + prefetch_offset],
+ nh_sz));
+ tmp = get_tbl24(dp, ips[i], nh_sz);
+ if (unlikely(is_entry_extended(tmp)))
+ tmp = get_tbl8(dp, tmp, ips[i], nh_sz);
+
+ next_hops[i] = tmp >> 1;
+ }
+ for (; i < n; i++) {
+ tmp = get_tbl24(dp, ips[i], nh_sz);
+ if (unlikely(is_entry_extended(tmp)))
+ tmp = get_tbl8(dp, tmp, ips[i], nh_sz);
+
+ next_hops[i] = tmp >> 1;
+ }
+}
+
+static inline void
+dir24_8_lookup_bulk_0(void *p, const uint32_t *ips,
+ uint64_t *next_hops, const unsigned int n)
+{
+ struct dir24_8_tbl *dp = (struct dir24_8_tbl *)p;
+
+ dir24_8_lookup_bulk(dp, ips, next_hops, n, 0);
+}
+
+static inline void
+dir24_8_lookup_bulk_1(void *p, const uint32_t *ips,
+ uint64_t *next_hops, const unsigned int n)
+{
+ struct dir24_8_tbl *dp = (struct dir24_8_tbl *)p;
+
+ dir24_8_lookup_bulk(dp, ips, next_hops, n, 1);
+}
+
+static inline void
+dir24_8_lookup_bulk_2(void *p, const uint32_t *ips,
+ uint64_t *next_hops, const unsigned int n)
+{
+ struct dir24_8_tbl *dp = (struct dir24_8_tbl *)p;
+
+ dir24_8_lookup_bulk(dp, ips, next_hops, n, 2);
+}
+
+static inline void
+dir24_8_lookup_bulk_3(void *p, const uint32_t *ips,
+ uint64_t *next_hops, const unsigned int n)
+{
+ struct dir24_8_tbl *dp = (struct dir24_8_tbl *)p;
+
+ dir24_8_lookup_bulk(dp, ips, next_hops, n, 3);
+}
+
+static inline void
+dir24_8_lookup_bulk_uni(void *p, const uint32_t *ips,
+ uint64_t *next_hops, const unsigned int n)
+{
+ struct dir24_8_tbl *dp = (struct dir24_8_tbl *)p;
+ uint64_t tmp;
+ uint32_t i;
+ uint32_t prefetch_offset = RTE_MIN(15U, n);
+ uint8_t nh_sz = dp->nh_sz;
+
+ for (i = 0; i < prefetch_offset; i++)
+ rte_prefetch0(get_tbl24_p(dp, ips[i], nh_sz));
+ for (i = 0; i < (n - prefetch_offset); i++) {
+ rte_prefetch0(get_tbl24_p(dp, ips[i + prefetch_offset],
+ nh_sz));
+ tmp = get_tbl24(dp, ips[i], nh_sz);
+ if (unlikely(is_entry_extended(tmp)))
+ tmp = get_tbl8(dp, tmp, ips[i], nh_sz);
+
+ next_hops[i] = tmp >> 1;
+ }
+ for (; i < n; i++) {
+ tmp = get_tbl24(dp, ips[i], nh_sz);
+ if (unlikely(is_entry_extended(tmp)))
+ tmp = get_tbl8(dp, tmp, ips[i], nh_sz);
+
+ next_hops[i] = tmp >> 1;
+ }
+}
+
void *
dir24_8_create(const char *name, int socket_id, struct rte_fib_conf *conf);
git.droids-corp.org / dpdk.git / commitdiff