> Replace rte_ipsec_sad_add(), rte_ipsec_sad_del() and
> rte_ipsec_sad_lookup() stubs with actual implementation.
>
> It uses three librte_hash tables each of which contains
> an entries for a specific SA type (either it is addressed by SPI only
> or SPI+DIP or SPI+DIP+SIP)
>
> Signed-off-by: Vladimir Medvedkin <vladimir.medved...@intel.com>
> ---
> +/*
> + * @internal helper function
> + * Lookup a batch of keys in three hash tables.
> + * First lookup key in SPI_ONLY table.
> + * If there is an entry for the corresponding SPI check its value.
> + * Two least significant bits of the value indicate
> + * the presence of more specific rule in other tables.
> + * Perform additional lookup in corresponding hash tables
> + * and update the value if lookup succeeded.
> + */
> +static int
> +__ipsec_sad_lookup(const struct rte_ipsec_sad *sad,
> + const union rte_ipsec_sad_key *keys[], void *sa[], uint32_t n)
> +{
> + const void *keys_2[RTE_HASH_LOOKUP_BULK_MAX];
> + const void *keys_3[RTE_HASH_LOOKUP_BULK_MAX];
> + void *vals_2[RTE_HASH_LOOKUP_BULK_MAX] = {NULL};
> + void *vals_3[RTE_HASH_LOOKUP_BULK_MAX] = {NULL};
> + uint32_t idx_2[RTE_HASH_LOOKUP_BULK_MAX];
> + uint32_t idx_3[RTE_HASH_LOOKUP_BULK_MAX];
> + uint64_t mask_1, mask_2, mask_3;
> + uint64_t map, map_spec;
> + uint32_t n_2 = 0;
> + uint32_t n_3 = 0;
> + uint32_t i;
> + int found = 0;
> +
> + for (i = 0; i < n; i++)
> + sa[i] = NULL;
> +
> + /*
> + * Lookup keys in SPI only hash table first.
> + */
> + rte_hash_lookup_bulk_data(sad->hash[RTE_IPSEC_SAD_SPI_ONLY],
> + (const void **)keys, n, &mask_1, sa);
> + for (map = mask_1; map; map &= (map - 1)) {
> + i = rte_bsf64(map);
> + /*
> + * if returned value indicates presence of a rule in other
> + * tables save a key for further lookup.
> + */
> + if ((uintptr_t)sa[i] & RTE_IPSEC_SAD_SPI_DIP_SIP) {
> + idx_3[n_3] = i;
> + keys_3[n_3++] = keys[i];
> + }
> + if ((uintptr_t)sa[i] & RTE_IPSEC_SAD_SPI_DIP) {
> + idx_2[n_2] = i;
> + keys_2[n_2++] = keys[i];
> + }
> + /* clear 2 LSB's which idicate the presence
s/idicate/indicate/
> + * of more specific rules
> + */
> + sa[i] = CLEAR_BIT(sa[i], RTE_IPSEC_SAD_KEY_TYPE_MASK);
> + }
> +
> + /* Lookup for more specific rules in SPI_DIP table */
> + if (n_2 != 0) {
> + rte_hash_lookup_bulk_data(sad->hash[RTE_IPSEC_SAD_SPI_DIP],
> + keys_2, n_2, &mask_2, vals_2);
> + for (map_spec = mask_2; map_spec; map_spec &= (map_spec - 1)) {
> + i = rte_bsf64(map_spec);
> + sa[idx_2[i]] = vals_2[i];
> + }
> + }
> + /* Lookup for more specific rules in SPI_DIP_SIP table */
> + if (n_3 != 0) {
> + rte_hash_lookup_bulk_data(sad->hash[RTE_IPSEC_SAD_SPI_DIP_SIP],
> + keys_3, n_3, &mask_3, vals_3);
> + for (map_spec = mask_3; map_spec; map_spec &= (map_spec - 1)) {
> + i = rte_bsf64(map_spec);
> + sa[idx_3[i]] = vals_3[i];
> + }
> + }
> +
> + for (i = 0; i < n; i++)
> + found += (sa[i] != NULL);
> +
> + return found;
> +}
> +
> --
Acked-by: Konstantin Ananyev <konstantin.anan...@intel.com>
Tested-by: Konstantin Ananyev <konstantin.anan...@intel.com>
> 2.7.4
