2016-09-08 16:48:04 +00:00
|
|
|
/*
|
2019-07-30 20:01:58 +00:00
|
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
|
|
* Copyright (C) IBM Corporation 2016.
|
|
|
|
*/
|
2016-09-08 16:48:04 +00:00
|
|
|
|
|
|
|
#include "acl_run.h"
|
|
|
|
#include "acl_vect.h"
|
|
|
|
|
|
|
|
struct _altivec_acl_const {
|
|
|
|
rte_xmm_t xmm_shuffle_input;
|
|
|
|
rte_xmm_t xmm_index_mask;
|
|
|
|
rte_xmm_t xmm_ones_16;
|
|
|
|
rte_xmm_t range_base;
|
2020-02-09 12:16:42 +00:00
|
|
|
} altivec_acl_const __rte_cache_aligned = {
|
2016-09-08 16:48:04 +00:00
|
|
|
{
|
|
|
|
.u32 = {0x00000000, 0x04040404, 0x08080808, 0x0c0c0c0c}
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.u32 = {RTE_ACL_NODE_INDEX, RTE_ACL_NODE_INDEX,
|
|
|
|
RTE_ACL_NODE_INDEX, RTE_ACL_NODE_INDEX}
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.u16 = {1, 1, 1, 1, 1, 1, 1, 1}
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.u32 = {0xffffff00, 0xffffff04, 0xffffff08, 0xffffff0c}
|
|
|
|
},
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Resolve priority for multiple results (altivec version).
|
|
|
|
* This consists comparing the priority of the current traversal with the
|
|
|
|
* running set of results for the packet.
|
|
|
|
* For each result, keep a running array of the result (rule number) and
|
|
|
|
* its priority for each category.
|
|
|
|
*/
|
|
|
|
static inline void
|
|
|
|
resolve_priority_altivec(uint64_t transition, int n,
|
|
|
|
const struct rte_acl_ctx *ctx, struct parms *parms,
|
|
|
|
const struct rte_acl_match_results *p, uint32_t categories)
|
|
|
|
{
|
|
|
|
uint32_t x;
|
|
|
|
xmm_t results, priority, results1, priority1;
|
|
|
|
vector bool int selector;
|
|
|
|
xmm_t *saved_results, *saved_priority;
|
|
|
|
|
|
|
|
for (x = 0; x < categories; x += RTE_ACL_RESULTS_MULTIPLIER) {
|
|
|
|
|
|
|
|
saved_results = (xmm_t *)(&parms[n].cmplt->results[x]);
|
|
|
|
saved_priority =
|
|
|
|
(xmm_t *)(&parms[n].cmplt->priority[x]);
|
|
|
|
|
|
|
|
/* get results and priorities for completed trie */
|
|
|
|
results = *(const xmm_t *)&p[transition].results[x];
|
|
|
|
priority = *(const xmm_t *)&p[transition].priority[x];
|
|
|
|
|
|
|
|
/* if this is not the first completed trie */
|
|
|
|
if (parms[n].cmplt->count != ctx->num_tries) {
|
|
|
|
|
|
|
|
/* get running best results and their priorities */
|
|
|
|
results1 = *saved_results;
|
|
|
|
priority1 = *saved_priority;
|
|
|
|
|
|
|
|
/* select results that are highest priority */
|
|
|
|
selector = vec_cmpgt(priority1, priority);
|
|
|
|
results = vec_sel(results, results1, selector);
|
|
|
|
priority = vec_sel(priority, priority1,
|
|
|
|
selector);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* save running best results and their priorities */
|
|
|
|
*saved_results = results;
|
|
|
|
*saved_priority = priority;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check for any match in 4 transitions
|
|
|
|
*/
|
2017-05-13 09:27:25 +00:00
|
|
|
static __rte_always_inline uint32_t
|
2016-09-08 16:48:04 +00:00
|
|
|
check_any_match_x4(uint64_t val[])
|
|
|
|
{
|
|
|
|
return (val[0] | val[1] | val[2] | val[3]) & RTE_ACL_NODE_MATCH;
|
|
|
|
}
|
|
|
|
|
2017-05-13 09:27:25 +00:00
|
|
|
static __rte_always_inline void
|
2016-09-08 16:48:04 +00:00
|
|
|
acl_match_check_x4(int slot, const struct rte_acl_ctx *ctx, struct parms *parms,
|
|
|
|
struct acl_flow_data *flows, uint64_t transitions[])
|
|
|
|
{
|
|
|
|
while (check_any_match_x4(transitions)) {
|
|
|
|
transitions[0] = acl_match_check(transitions[0], slot, ctx,
|
|
|
|
parms, flows, resolve_priority_altivec);
|
|
|
|
transitions[1] = acl_match_check(transitions[1], slot + 1, ctx,
|
|
|
|
parms, flows, resolve_priority_altivec);
|
|
|
|
transitions[2] = acl_match_check(transitions[2], slot + 2, ctx,
|
|
|
|
parms, flows, resolve_priority_altivec);
|
|
|
|
transitions[3] = acl_match_check(transitions[3], slot + 3, ctx,
|
|
|
|
parms, flows, resolve_priority_altivec);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Process 4 transitions (in 2 XMM registers) in parallel
|
|
|
|
*/
|
|
|
|
static inline __attribute__((optimize("O2"))) xmm_t
|
|
|
|
transition4(xmm_t next_input, const uint64_t *trans,
|
|
|
|
xmm_t *indices1, xmm_t *indices2)
|
|
|
|
{
|
|
|
|
xmm_t addr, tr_lo, tr_hi;
|
|
|
|
xmm_t in, node_type, r, t;
|
|
|
|
xmm_t dfa_ofs, quad_ofs;
|
|
|
|
xmm_t *index_mask, *tp;
|
|
|
|
vector bool int dfa_msk;
|
|
|
|
vector signed char zeroes = {};
|
|
|
|
union {
|
|
|
|
uint64_t d64[2];
|
|
|
|
uint32_t d32[4];
|
|
|
|
} v;
|
|
|
|
|
|
|
|
/* Move low 32 into tr_lo and high 32 into tr_hi */
|
|
|
|
tr_lo = (xmm_t){(*indices1)[0], (*indices1)[2],
|
|
|
|
(*indices2)[0], (*indices2)[2]};
|
|
|
|
tr_hi = (xmm_t){(*indices1)[1], (*indices1)[3],
|
|
|
|
(*indices2)[1], (*indices2)[3]};
|
|
|
|
|
|
|
|
/* Calculate the address (array index) for all 4 transitions. */
|
|
|
|
index_mask = (xmm_t *)&altivec_acl_const.xmm_index_mask.u32;
|
|
|
|
t = vec_xor(*index_mask, *index_mask);
|
|
|
|
in = vec_perm(next_input, (xmm_t){},
|
|
|
|
*(vector unsigned char *)&altivec_acl_const.xmm_shuffle_input);
|
|
|
|
|
|
|
|
/* Calc node type and node addr */
|
|
|
|
node_type = vec_and(vec_nor(*index_mask, *index_mask), tr_lo);
|
|
|
|
addr = vec_and(tr_lo, *index_mask);
|
|
|
|
|
|
|
|
/* mask for DFA type(0) nodes */
|
|
|
|
dfa_msk = vec_cmpeq(node_type, t);
|
|
|
|
|
|
|
|
/* DFA calculations. */
|
|
|
|
r = vec_sr(in, (vector unsigned int){30, 30, 30, 30});
|
|
|
|
tp = (xmm_t *)&altivec_acl_const.range_base.u32;
|
|
|
|
r = vec_add(r, *tp);
|
|
|
|
t = vec_sr(in, (vector unsigned int){24, 24, 24, 24});
|
|
|
|
r = vec_perm(tr_hi, (xmm_t){(uint16_t)0 << 16},
|
|
|
|
(vector unsigned char)r);
|
|
|
|
|
|
|
|
dfa_ofs = vec_sub(t, r);
|
|
|
|
|
|
|
|
/* QUAD/SINGLE caluclations. */
|
|
|
|
t = (xmm_t)vec_cmpgt((vector signed char)in, (vector signed char)tr_hi);
|
|
|
|
t = (xmm_t)vec_sel(
|
|
|
|
vec_sel(
|
|
|
|
(vector signed char)vec_sub(
|
|
|
|
zeroes, (vector signed char)t),
|
|
|
|
(vector signed char)t,
|
|
|
|
vec_cmpgt((vector signed char)t, zeroes)),
|
|
|
|
zeroes,
|
|
|
|
vec_cmpeq((vector signed char)t, zeroes));
|
|
|
|
|
|
|
|
t = (xmm_t)vec_msum((vector signed char)t,
|
|
|
|
(vector unsigned char)t, (xmm_t){});
|
|
|
|
quad_ofs = (xmm_t)vec_msum((vector signed short)t,
|
|
|
|
*(vector signed short *)&altivec_acl_const.xmm_ones_16.u16,
|
|
|
|
(xmm_t){});
|
|
|
|
|
|
|
|
/* blend DFA and QUAD/SINGLE. */
|
|
|
|
t = vec_sel(quad_ofs, dfa_ofs, dfa_msk);
|
|
|
|
|
|
|
|
/* calculate address for next transitions. */
|
|
|
|
addr = vec_add(addr, t);
|
|
|
|
|
|
|
|
v.d64[0] = (uint64_t)trans[addr[0]];
|
|
|
|
v.d64[1] = (uint64_t)trans[addr[1]];
|
|
|
|
*indices1 = (xmm_t){v.d32[0], v.d32[1], v.d32[2], v.d32[3]};
|
|
|
|
v.d64[0] = (uint64_t)trans[addr[2]];
|
|
|
|
v.d64[1] = (uint64_t)trans[addr[3]];
|
|
|
|
*indices2 = (xmm_t){v.d32[0], v.d32[1], v.d32[2], v.d32[3]};
|
|
|
|
|
|
|
|
return vec_sr(next_input,
|
|
|
|
(vector unsigned int){CHAR_BIT, CHAR_BIT, CHAR_BIT, CHAR_BIT});
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Execute trie traversal with 8 traversals in parallel
|
|
|
|
*/
|
|
|
|
static inline int
|
|
|
|
search_altivec_8(const struct rte_acl_ctx *ctx, const uint8_t **data,
|
|
|
|
uint32_t *results, uint32_t total_packets, uint32_t categories)
|
|
|
|
{
|
|
|
|
int n;
|
|
|
|
struct acl_flow_data flows;
|
|
|
|
uint64_t index_array[MAX_SEARCHES_ALTIVEC8];
|
|
|
|
struct completion cmplt[MAX_SEARCHES_ALTIVEC8];
|
|
|
|
struct parms parms[MAX_SEARCHES_ALTIVEC8];
|
|
|
|
xmm_t input0, input1;
|
|
|
|
|
|
|
|
acl_set_flow(&flows, cmplt, RTE_DIM(cmplt), data, results,
|
|
|
|
total_packets, categories, ctx->trans_table);
|
|
|
|
|
|
|
|
for (n = 0; n < MAX_SEARCHES_ALTIVEC8; n++) {
|
|
|
|
cmplt[n].count = 0;
|
|
|
|
index_array[n] = acl_start_next_trie(&flows, parms, n, ctx);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check for any matches. */
|
|
|
|
acl_match_check_x4(0, ctx, parms, &flows, (uint64_t *)&index_array[0]);
|
|
|
|
acl_match_check_x4(4, ctx, parms, &flows, (uint64_t *)&index_array[4]);
|
|
|
|
|
|
|
|
while (flows.started > 0) {
|
|
|
|
|
|
|
|
/* Gather 4 bytes of input data for each stream. */
|
|
|
|
input0 = (xmm_t){GET_NEXT_4BYTES(parms, 0),
|
|
|
|
GET_NEXT_4BYTES(parms, 1),
|
|
|
|
GET_NEXT_4BYTES(parms, 2),
|
|
|
|
GET_NEXT_4BYTES(parms, 3)};
|
|
|
|
|
|
|
|
input1 = (xmm_t){GET_NEXT_4BYTES(parms, 4),
|
|
|
|
GET_NEXT_4BYTES(parms, 5),
|
|
|
|
GET_NEXT_4BYTES(parms, 6),
|
|
|
|
GET_NEXT_4BYTES(parms, 7)};
|
|
|
|
|
|
|
|
/* Process the 4 bytes of input on each stream. */
|
|
|
|
|
|
|
|
input0 = transition4(input0, flows.trans,
|
|
|
|
(xmm_t *)&index_array[0], (xmm_t *)&index_array[2]);
|
|
|
|
input1 = transition4(input1, flows.trans,
|
|
|
|
(xmm_t *)&index_array[4], (xmm_t *)&index_array[6]);
|
|
|
|
|
|
|
|
input0 = transition4(input0, flows.trans,
|
|
|
|
(xmm_t *)&index_array[0], (xmm_t *)&index_array[2]);
|
|
|
|
input1 = transition4(input1, flows.trans,
|
|
|
|
(xmm_t *)&index_array[4], (xmm_t *)&index_array[6]);
|
|
|
|
|
|
|
|
input0 = transition4(input0, flows.trans,
|
|
|
|
(xmm_t *)&index_array[0], (xmm_t *)&index_array[2]);
|
|
|
|
input1 = transition4(input1, flows.trans,
|
|
|
|
(xmm_t *)&index_array[4], (xmm_t *)&index_array[6]);
|
|
|
|
|
|
|
|
input0 = transition4(input0, flows.trans,
|
|
|
|
(xmm_t *)&index_array[0], (xmm_t *)&index_array[2]);
|
|
|
|
input1 = transition4(input1, flows.trans,
|
|
|
|
(xmm_t *)&index_array[4], (xmm_t *)&index_array[6]);
|
|
|
|
|
|
|
|
/* Check for any matches. */
|
|
|
|
acl_match_check_x4(0, ctx, parms, &flows,
|
|
|
|
(uint64_t *)&index_array[0]);
|
|
|
|
acl_match_check_x4(4, ctx, parms, &flows,
|
|
|
|
(uint64_t *)&index_array[4]);
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Execute trie traversal with 4 traversals in parallel
|
|
|
|
*/
|
|
|
|
static inline int
|
|
|
|
search_altivec_4(const struct rte_acl_ctx *ctx, const uint8_t **data,
|
|
|
|
uint32_t *results, int total_packets, uint32_t categories)
|
|
|
|
{
|
|
|
|
int n;
|
|
|
|
struct acl_flow_data flows;
|
|
|
|
uint64_t index_array[MAX_SEARCHES_ALTIVEC4];
|
|
|
|
struct completion cmplt[MAX_SEARCHES_ALTIVEC4];
|
|
|
|
struct parms parms[MAX_SEARCHES_ALTIVEC4];
|
|
|
|
xmm_t input;
|
|
|
|
|
|
|
|
acl_set_flow(&flows, cmplt, RTE_DIM(cmplt), data, results,
|
|
|
|
total_packets, categories, ctx->trans_table);
|
|
|
|
|
|
|
|
for (n = 0; n < MAX_SEARCHES_ALTIVEC4; n++) {
|
|
|
|
cmplt[n].count = 0;
|
|
|
|
index_array[n] = acl_start_next_trie(&flows, parms, n, ctx);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check for any matches. */
|
|
|
|
acl_match_check_x4(0, ctx, parms, &flows, index_array);
|
|
|
|
|
|
|
|
while (flows.started > 0) {
|
|
|
|
|
|
|
|
/* Gather 4 bytes of input data for each stream. */
|
|
|
|
input = (xmm_t){GET_NEXT_4BYTES(parms, 0),
|
|
|
|
GET_NEXT_4BYTES(parms, 1),
|
|
|
|
GET_NEXT_4BYTES(parms, 2),
|
|
|
|
GET_NEXT_4BYTES(parms, 3)};
|
|
|
|
|
|
|
|
/* Process the 4 bytes of input on each stream. */
|
|
|
|
input = transition4(input, flows.trans,
|
|
|
|
(xmm_t *)&index_array[0], (xmm_t *)&index_array[2]);
|
|
|
|
input = transition4(input, flows.trans,
|
|
|
|
(xmm_t *)&index_array[0], (xmm_t *)&index_array[2]);
|
|
|
|
input = transition4(input, flows.trans,
|
|
|
|
(xmm_t *)&index_array[0], (xmm_t *)&index_array[2]);
|
|
|
|
input = transition4(input, flows.trans,
|
|
|
|
(xmm_t *)&index_array[0], (xmm_t *)&index_array[2]);
|
|
|
|
|
|
|
|
/* Check for any matches. */
|
|
|
|
acl_match_check_x4(0, ctx, parms, &flows, index_array);
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|