static int
action_has_nbo_args(struct action *a);
+static int
+learner_action_args_check(struct rte_swx_pipeline *p, struct action *a, const char *mf_name);
+
static int
instr_learn_translate(struct rte_swx_pipeline *p,
struct action *action,
struct instruction_data *data __rte_unused)
{
struct action *a;
+ const char *mf_name;
+ uint32_t mf_offset = 0;
CHECK(action, EINVAL);
- CHECK(n_tokens == 2, EINVAL);
+ CHECK((n_tokens == 2) || (n_tokens == 3), EINVAL);
a = action_find(p, tokens[1]);
CHECK(a, EINVAL);
CHECK(!action_has_nbo_args(a), EINVAL);
+ mf_name = (n_tokens > 2) ? tokens[2] : NULL;
+ CHECK(!learner_action_args_check(p, a, mf_name), EINVAL);
+
+ if (mf_name) {
+ struct field *mf;
+
+ mf = metadata_field_parse(p, mf_name);
+ CHECK(mf, EINVAL);
+
+ mf_offset = mf->offset / 8;
+ }
+
instr->type = INSTR_LEARNER_LEARN;
instr->learn.action_id = a->id;
+ instr->learn.mf_offset = mf_offset;
return 0;
}
CHECK(params->action_names, EINVAL);
for (i = 0; i < params->n_actions; i++) {
const char *action_name = params->action_names[i];
- const char *action_field_name = params->action_field_names[i];
struct action *a;
uint32_t action_data_size;
a = action_find(p, action_name);
CHECK(a, EINVAL);
- status = learner_action_args_check(p, a, action_field_name);
- if (status)
- return status;
-
status = learner_action_learning_check(p,
a,
params->action_names,
if (!l->actions)
goto nomem;
- l->action_arg = calloc(params->n_actions, sizeof(struct field *));
- if (!l->action_arg)
- goto nomem;
-
if (action_data_size_max) {
l->default_action_data = calloc(1, action_data_size_max);
if (!l->default_action_data)
l->header = header;
- for (i = 0; i < params->n_actions; i++) {
- const char *mf_name = params->action_field_names[i];
-
+ for (i = 0; i < params->n_actions; i++)
l->actions[i] = action_find(p, params->action_names[i]);
- l->action_arg[i] = mf_name ? metadata_field_parse(p, mf_name) : NULL;
- }
-
l->default_action = default_action;
if (default_action->st)
if (!l)
return -ENOMEM;
- free(l->action_arg);
free(l->actions);
free(l->fields);
free(l);
struct learner_runtime *r = &t->learners[j];
free(r->mailbox);
- free(r->action_data);
}
free(t->learners);
TAILQ_FOREACH(l, &p->learners, node) {
struct learner_runtime *r = &t->learners[l->id];
uint64_t size;
- uint32_t j;
/* r->mailbox. */
size = rte_swx_table_learner_mailbox_size_get();
r->key = l->header ?
&t->structs[l->header->struct_id] :
&t->structs[p->metadata_struct_id];
-
- /* r->action_data. */
- r->action_data = calloc(p->n_actions, sizeof(uint8_t *));
- if (!r->action_data) {
- status = -ENOMEM;
- goto error;
- }
-
- for (j = 0; j < l->n_actions; j++) {
- struct action *a = l->actions[j];
- struct field *mf = l->action_arg[j];
- uint8_t *m = t->structs[p->metadata_struct_id];
-
- r->action_data[a->id] = mf ? &m[mf->offset / 8] : NULL;
- }
}
}
TAILQ_REMOVE(&p->learners, l, node);
free(l->fields);
free(l->actions);
- free(l->action_arg);
free(l->default_action_data);
free(l);
}
}
}
+static uint32_t
+instruction_group_list_custom_instructions_count(struct instruction_group_list *igl)
+{
+ struct instruction_group *g;
+ uint32_t n_custom_instr = 0;
+
+ /* Groups with a single instruction: no function is generated for this group, the group
+ * keeps its current instruction. Groups with more than two instructions: one function and
+ * the associated custom instruction get generated for each such group.
+ */
+ TAILQ_FOREACH(g, igl, node) {
+ if (g->first_instr_id == g->last_instr_id)
+ continue;
+
+ n_custom_instr++;
+ }
+
+ return n_custom_instr;
+}
+
static int
pipeline_codegen(struct rte_swx_pipeline *p, struct instruction_group_list *igl)
{
return status;
}
+static int
+pipeline_adjust_check(struct rte_swx_pipeline *p __rte_unused,
+ struct instruction_group_list *igl)
+{
+ uint32_t n_custom_instr = instruction_group_list_custom_instructions_count(igl);
+
+ /* Check that enough space is available within the pipeline instruction table to store all
+ * the custom instructions.
+ */
+ if (INSTR_CUSTOM_0 + n_custom_instr > RTE_SWX_PIPELINE_INSTRUCTION_TABLE_SIZE_MAX)
+ return -ENOSPC;
+
+ return 0;
+}
+
+static void
+pipeline_adjust(struct rte_swx_pipeline *p, struct instruction_group_list *igl)
+{
+ struct instruction_group *g;
+ uint32_t i;
+
+ /* Pipeline table instructions. */
+ for (i = 0; i < p->n_instructions; i++) {
+ struct instruction *instr = &p->instructions[i];
+
+ if (instr->type == INSTR_TABLE)
+ instr->type = INSTR_TABLE_AF;
+
+ if (instr->type == INSTR_LEARNER)
+ instr->type = INSTR_LEARNER_AF;
+ }
+
+ /* Pipeline custom instructions. */
+ i = 0;
+ TAILQ_FOREACH(g, igl, node) {
+ struct instruction *instr = &p->instructions[g->first_instr_id];
+ uint32_t j;
+
+ if (g->first_instr_id == g->last_instr_id)
+ continue;
+
+ /* Install a new custom instruction. */
+ p->instruction_table[INSTR_CUSTOM_0 + i] = g->func;
+
+ /* First instruction of the group: change its type to the new custom instruction. */
+ instr->type = INSTR_CUSTOM_0 + i;
+
+ /* All the subsequent instructions of the group: invalidate. */
+ for (j = g->first_instr_id + 1; j <= g->last_instr_id; j++) {
+ struct instruction_data *data = &p->instruction_data[j];
+
+ data->invalid = 1;
+ }
+
+ i++;
+ }
+
+ /* Remove the invalidated instructions. */
+ p->n_instructions = instr_compact(p->instructions, p->instruction_data, p->n_instructions);
+
+ /* Resolve the jump destination for any "standalone" jump instructions (i.e. those jump
+ * instructions that are the only instruction within their group, so they were left
+ * unmodified).
+ */
+ instr_jmp_resolve(p->instructions, p->instruction_data, p->n_instructions);
+}
+
static int
pipeline_compile(struct rte_swx_pipeline *p)
{
if (status)
goto free;
+ /* Adjust instructions. */
+ status = pipeline_adjust_check(p, igl);
+ if (status)
+ goto free;
+
+ pipeline_adjust(p, igl);
+
free:
instruction_group_list_free(igl);
git.droids-corp.org / dpdk.git / blobdiff