From: Cristian Dumitrescu Date: Thu, 1 Oct 2020 10:19:59 +0000 (+0100) Subject: pipeline: add SWX table update high level API X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=b32c0a2c5e4c;p=dpdk.git pipeline: add SWX table update high level API High-level transaction-oriented API for SWX pipeline table updates. It supports multi-table atomic updates, i.e. multiple tables can be updated in a single step with only the before and after table set visible to the packets. Uses the lower-level table update mechanisms. Signed-off-by: Cristian Dumitrescu --- diff --git a/lib/librte_pipeline/meson.build b/lib/librte_pipeline/meson.build index d5f4d16e56..be1d9c3a47 100644 --- a/lib/librte_pipeline/meson.build +++ b/lib/librte_pipeline/meson.build @@ -4,7 +4,8 @@ sources = files('rte_pipeline.c', 'rte_port_in_action.c', 'rte_table_action.c', - 'rte_swx_pipeline.c',) + 'rte_swx_pipeline.c', + 'rte_swx_ctl.c',) headers = files('rte_pipeline.h', 'rte_port_in_action.h', 'rte_table_action.h', diff --git a/lib/librte_pipeline/rte_pipeline_version.map b/lib/librte_pipeline/rte_pipeline_version.map index b415ecd237..b5e35f2950 100644 --- a/lib/librte_pipeline/rte_pipeline_version.map +++ b/lib/librte_pipeline/rte_pipeline_version.map @@ -62,10 +62,19 @@ EXPERIMENTAL { # added in 20.11 rte_swx_ctl_action_arg_info_get; rte_swx_ctl_action_info_get; + rte_swx_ctl_pipeline_abort; + rte_swx_ctl_pipeline_commit; + rte_swx_ctl_pipeline_create; + rte_swx_ctl_pipeline_free; rte_swx_ctl_pipeline_info_get; rte_swx_ctl_pipeline_numa_node_get; rte_swx_ctl_pipeline_port_in_stats_read; rte_swx_ctl_pipeline_port_out_stats_read; + rte_swx_ctl_pipeline_table_default_entry_add; + rte_swx_ctl_pipeline_table_entry_add; + rte_swx_ctl_pipeline_table_entry_delete; + rte_swx_ctl_pipeline_table_entry_read; + rte_swx_ctl_pipeline_table_fprintf; rte_swx_ctl_table_action_info_get; rte_swx_ctl_table_info_get; rte_swx_ctl_table_match_field_info_get; diff --git a/lib/librte_pipeline/rte_swx_ctl.c b/lib/librte_pipeline/rte_swx_ctl.c new file mode 100644 index 0000000000..576fb2bf34 --- /dev/null +++ b/lib/librte_pipeline/rte_swx_ctl.c @@ -0,0 +1,1552 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2020 Intel Corporation + */ +#include +#include +#include +#include +#include + +#include +#include + +#include "rte_swx_ctl.h" + +#define CHECK(condition, err_code) \ +do { \ + if (!(condition)) \ + return -(err_code); \ +} while (0) + +#define ntoh64(x) rte_be_to_cpu_64(x) +#define hton64(x) rte_cpu_to_be_64(x) + +#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN +#define field_ntoh(val, n_bits) (ntoh64((val) << (64 - n_bits))) +#define field_hton(val, n_bits) (hton64((val) << (64 - n_bits))) +#else +#define field_ntoh(val, n_bits) (val) +#define field_hton(val, n_bits) (val) +#endif + +struct action { + struct rte_swx_ctl_action_info info; + struct rte_swx_ctl_action_arg_info *args; + uint32_t data_size; +}; + +struct table { + struct rte_swx_ctl_table_info info; + struct rte_swx_ctl_table_match_field_info *mf; + struct rte_swx_ctl_table_action_info *actions; + struct rte_swx_table_ops ops; + struct rte_swx_table_params params; + + struct rte_swx_table_entry_list entries; + struct rte_swx_table_entry_list pending_add; + struct rte_swx_table_entry_list pending_modify0; + struct rte_swx_table_entry_list pending_modify1; + struct rte_swx_table_entry_list pending_delete; + struct rte_swx_table_entry *pending_default; + + int is_stub; + uint32_t n_add; + uint32_t n_modify; + uint32_t n_delete; +}; + +struct rte_swx_ctl_pipeline { + struct rte_swx_ctl_pipeline_info info; + struct rte_swx_pipeline *p; + struct action *actions; + struct table *tables; + struct rte_swx_table_state *ts; + struct rte_swx_table_state *ts_next; + int numa_node; +}; + +static struct action * +action_find(struct rte_swx_ctl_pipeline *ctl, const char *action_name) +{ + uint32_t i; + + for (i = 0; i < ctl->info.n_actions; i++) { + struct action *a = &ctl->actions[i]; + + if (!strcmp(action_name, a->info.name)) + return a; + } + + return NULL; +} + +static void +action_free(struct rte_swx_ctl_pipeline *ctl) +{ + uint32_t i; + + if (!ctl->actions) + return; + + for (i = 0; i < ctl->info.n_actions; i++) { + struct action *action = &ctl->actions[i]; + + free(action->args); + } + + free(ctl->actions); + ctl->actions = NULL; +} + +static struct table * +table_find(struct rte_swx_ctl_pipeline *ctl, const char *table_name) +{ + uint32_t i; + + for (i = 0; i < ctl->info.n_tables; i++) { + struct table *table = &ctl->tables[i]; + + if (!strcmp(table_name, table->info.name)) + return table; + } + + return NULL; +} + +static int +table_params_get(struct rte_swx_ctl_pipeline *ctl, uint32_t table_id) +{ + struct table *table = &ctl->tables[table_id]; + uint8_t *key_mask = NULL; + enum rte_swx_table_match_type match_type = RTE_SWX_TABLE_MATCH_WILDCARD; + uint32_t key_size = 0, key_offset = 0, action_data_size = 0, i; + + if (table->info.n_match_fields) { + struct rte_swx_ctl_table_match_field_info *first, *last; + uint32_t i; + + first = &table->mf[0]; + last = &table->mf[table->info.n_match_fields - 1]; + + /* match_type. */ + for (i = 0; i < table->info.n_match_fields; i++) { + struct rte_swx_ctl_table_match_field_info *f; + + f = &table->mf[i]; + if (f->match_type != RTE_SWX_TABLE_MATCH_EXACT) + break; + } + + if (i == table->info.n_match_fields) + match_type = RTE_SWX_TABLE_MATCH_EXACT; + else if ((i == table->info.n_match_fields - 1) && + (last->match_type == RTE_SWX_TABLE_MATCH_LPM)) + match_type = RTE_SWX_TABLE_MATCH_LPM; + + /* key_offset. */ + key_offset = first->offset / 8; + + /* key_size. */ + key_size = (last->offset + last->n_bits - first->offset) / 8; + + /* key_mask. */ + key_mask = calloc(1, key_size); + CHECK(key_mask, ENOMEM); + + for (i = 0; i < table->info.n_match_fields; i++) { + struct rte_swx_ctl_table_match_field_info *f; + uint32_t start; + size_t size; + + f = &table->mf[i]; + start = (f->offset - first->offset) / 8; + size = f->n_bits / 8; + + memset(&key_mask[start], 0xFF, size); + } + } + + /* action_data_size. */ + for (i = 0; i < table->info.n_actions; i++) { + uint32_t action_id = table->actions[i].action_id; + struct action *a = &ctl->actions[action_id]; + + if (a->data_size > action_data_size) + action_data_size = a->data_size; + } + + /* Fill in. */ + table->params.match_type = match_type; + table->params.key_size = key_size; + table->params.key_offset = key_offset; + table->params.key_mask0 = key_mask; + table->params.action_data_size = action_data_size; + table->params.n_keys_max = table->info.size; + + return 0; +} + +static void +table_entry_free(struct rte_swx_table_entry *entry) +{ + if (!entry) + return; + + free(entry->key); + free(entry->key_mask); + free(entry->action_data); + free(entry); +} + +static struct rte_swx_table_entry * +table_entry_alloc(struct table *table) +{ + struct rte_swx_table_entry *entry; + + entry = calloc(1, sizeof(struct rte_swx_table_entry)); + if (!entry) + goto error; + + /* key, key_mask. */ + if (!table->is_stub) { + entry->key = calloc(1, table->params.key_size); + if (!entry->key) + goto error; + + if (table->params.match_type != RTE_SWX_TABLE_MATCH_EXACT) { + entry->key_mask = calloc(1, table->params.key_size); + if (!entry->key_mask) + goto error; + } + } + + /* action_data. */ + if (table->params.action_data_size) { + entry->action_data = calloc(1, table->params.action_data_size); + if (!entry->action_data) + goto error; + } + + return entry; + +error: + table_entry_free(entry); + return NULL; +} + +static int +table_entry_check(struct rte_swx_ctl_pipeline *ctl, + uint32_t table_id, + struct rte_swx_table_entry *entry, + int key_check, + int data_check) +{ + struct table *table = &ctl->tables[table_id]; + + CHECK(entry, EINVAL); + + if (key_check) { + if (table->is_stub) { + /* key. */ + CHECK(!entry->key, EINVAL); + + /* key_mask. */ + CHECK(!entry->key_mask, EINVAL); + } else { + /* key. */ + CHECK(entry->key, EINVAL); + + /* key_mask. */ + switch (table->params.match_type) { + case RTE_SWX_TABLE_MATCH_WILDCARD: + break; + + case RTE_SWX_TABLE_MATCH_LPM: + /* TBD Check that key mask is prefix. */ + break; + + case RTE_SWX_TABLE_MATCH_EXACT: + CHECK(!entry->key_mask, EINVAL); + break; + + default: + CHECK(0, EINVAL); + } + } + } + + if (data_check) { + struct action *a; + uint32_t i; + + /* action_id. */ + for (i = 0; i < table->info.n_actions; i++) + if (entry->action_id == table->actions[i].action_id) + break; + + CHECK(i < table->info.n_actions, EINVAL); + + /* action_data. */ + a = &ctl->actions[entry->action_id]; + CHECK((a->data_size && entry->action_data) || + (!a->data_size && !entry->action_data), EINVAL); + } + + return 0; +} + +static struct rte_swx_table_entry * +table_entry_duplicate(struct rte_swx_ctl_pipeline *ctl, + uint32_t table_id, + struct rte_swx_table_entry *entry, + int key_duplicate, + int data_duplicate) +{ + struct table *table = &ctl->tables[table_id]; + struct rte_swx_table_entry *new_entry = NULL; + + if (!entry) + goto error; + + new_entry = calloc(1, sizeof(struct rte_swx_table_entry)); + if (!new_entry) + goto error; + + if (key_duplicate && !table->is_stub) { + /* key. */ + if (!entry->key) + goto error; + + new_entry->key = malloc(table->params.key_size); + if (!new_entry->key) + goto error; + + memcpy(new_entry->key, entry->key, table->params.key_size); + + /* key_signature. */ + new_entry->key_signature = entry->key_signature; + + /* key_mask. */ + if (table->params.match_type != RTE_SWX_TABLE_MATCH_EXACT) { + if (!entry->key_mask) + goto error; + + new_entry->key_mask = malloc(table->params.key_size); + if (!new_entry->key_mask) + goto error; + + memcpy(new_entry->key_mask, + entry->key_mask, + table->params.key_size); + } + } + + if (data_duplicate) { + struct action *a; + uint32_t i; + + /* action_id. */ + for (i = 0; i < table->info.n_actions; i++) + if (entry->action_id == table->actions[i].action_id) + break; + + if (i >= table->info.n_actions) + goto error; + + new_entry->action_id = entry->action_id; + + /* action_data. */ + a = &ctl->actions[entry->action_id]; + if (a->data_size) { + if (!entry->action_data) + goto error; + + new_entry->action_data = malloc(a->data_size); + if (!new_entry->action_data) + goto error; + + memcpy(new_entry->action_data, + entry->action_data, + a->data_size); + } + } + + return entry; + +error: + table_entry_free(new_entry); + return NULL; +} + +static int +entry_keycmp_em(struct rte_swx_table_entry *e0, + struct rte_swx_table_entry *e1, + uint32_t key_size) +{ + if (e0->key_signature != e1->key_signature) + return 1; /* Not equal. */ + + if (memcmp(e0->key, e1->key, key_size)) + return 1; /* Not equal. */ + + return 0; /* Equal */ +} + +static int +entry_keycmp_wm(struct rte_swx_table_entry *e0 __rte_unused, + struct rte_swx_table_entry *e1 __rte_unused, + uint32_t key_size __rte_unused) +{ + /* TBD */ + + return 1; /* Not equal */ +} + +static int +entry_keycmp_lpm(struct rte_swx_table_entry *e0 __rte_unused, + struct rte_swx_table_entry *e1 __rte_unused, + uint32_t key_size __rte_unused) +{ + /* TBD */ + + return 1; /* Not equal */ +} + +static int +table_entry_keycmp(struct table *table, + struct rte_swx_table_entry *e0, + struct rte_swx_table_entry *e1) +{ + switch (table->params.match_type) { + case RTE_SWX_TABLE_MATCH_EXACT: + return entry_keycmp_em(e0, e1, table->params.key_size); + + case RTE_SWX_TABLE_MATCH_WILDCARD: + return entry_keycmp_wm(e0, e1, table->params.key_size); + + case RTE_SWX_TABLE_MATCH_LPM: + return entry_keycmp_lpm(e0, e1, table->params.key_size); + + default: + return 1; /* Not equal. */ + } +} + +static struct rte_swx_table_entry * +table_entries_find(struct table *table, struct rte_swx_table_entry *entry) +{ + struct rte_swx_table_entry *e; + + TAILQ_FOREACH(e, &table->entries, node) + if (!table_entry_keycmp(table, entry, e)) + return e; /* Found. */ + + return NULL; /* Not found. */ +} + +static void +table_entries_free(struct table *table) +{ + for ( ; ; ) { + struct rte_swx_table_entry *entry; + + entry = TAILQ_FIRST(&table->entries); + if (!entry) + break; + + TAILQ_REMOVE(&table->entries, entry, node); + table_entry_free(entry); + } +} + +static struct rte_swx_table_entry * +table_pending_add_find(struct table *table, struct rte_swx_table_entry *entry) +{ + struct rte_swx_table_entry *e; + + TAILQ_FOREACH(e, &table->pending_add, node) + if (!table_entry_keycmp(table, entry, e)) + return e; /* Found. */ + + return NULL; /* Not found. */ +} + +static void +table_pending_add_admit(struct table *table) +{ + TAILQ_CONCAT(&table->entries, &table->pending_add, node); +} + +static void +table_pending_add_free(struct table *table) +{ + for ( ; ; ) { + struct rte_swx_table_entry *entry; + + entry = TAILQ_FIRST(&table->pending_add); + if (!entry) + break; + + TAILQ_REMOVE(&table->pending_add, entry, node); + table_entry_free(entry); + } +} + +static struct rte_swx_table_entry * +table_pending_modify0_find(struct table *table, + struct rte_swx_table_entry *entry) +{ + struct rte_swx_table_entry *e; + + TAILQ_FOREACH(e, &table->pending_modify0, node) + if (!table_entry_keycmp(table, entry, e)) + return e; /* Found. */ + + return NULL; /* Not found. */ +} + +static void +table_pending_modify0_admit(struct table *table) +{ + TAILQ_CONCAT(&table->entries, &table->pending_modify0, node); +} + +static void +table_pending_modify0_free(struct table *table) +{ + for ( ; ; ) { + struct rte_swx_table_entry *entry; + + entry = TAILQ_FIRST(&table->pending_modify0); + if (!entry) + break; + + TAILQ_REMOVE(&table->pending_modify0, entry, node); + table_entry_free(entry); + } +} + +static struct rte_swx_table_entry * +table_pending_modify1_find(struct table *table, + struct rte_swx_table_entry *entry) +{ + struct rte_swx_table_entry *e; + + TAILQ_FOREACH(e, &table->pending_modify1, node) + if (!table_entry_keycmp(table, entry, e)) + return e; /* Found. */ + + return NULL; /* Not found. */ +} + +static void +table_pending_modify1_admit(struct table *table) +{ + TAILQ_CONCAT(&table->entries, &table->pending_modify1, node); +} + +static void +table_pending_modify1_free(struct table *table) +{ + for ( ; ; ) { + struct rte_swx_table_entry *entry; + + entry = TAILQ_FIRST(&table->pending_modify1); + if (!entry) + break; + + TAILQ_REMOVE(&table->pending_modify1, entry, node); + table_entry_free(entry); + } +} + +static struct rte_swx_table_entry * +table_pending_delete_find(struct table *table, + struct rte_swx_table_entry *entry) +{ + struct rte_swx_table_entry *e; + + TAILQ_FOREACH(e, &table->pending_delete, node) + if (!table_entry_keycmp(table, entry, e)) + return e; /* Found. */ + + return NULL; /* Not found. */ +} + +static void +table_pending_delete_admit(struct table *table) +{ + TAILQ_CONCAT(&table->entries, &table->pending_delete, node); +} + +static void +table_pending_delete_free(struct table *table) +{ + for ( ; ; ) { + struct rte_swx_table_entry *entry; + + entry = TAILQ_FIRST(&table->pending_delete); + if (!entry) + break; + + TAILQ_REMOVE(&table->pending_delete, entry, node); + table_entry_free(entry); + } +} + +static void +table_pending_default_free(struct table *table) +{ + if (!table->pending_default) + return; + + free(table->pending_default->action_data); + free(table->pending_default); + table->pending_default = NULL; +} + +static void +table_free(struct rte_swx_ctl_pipeline *ctl) +{ + uint32_t i; + + if (!ctl->tables) + return; + + for (i = 0; i < ctl->info.n_tables; i++) { + struct table *table = &ctl->tables[i]; + + free(table->mf); + free(table->actions); + free(table->params.key_mask0); + + table_entries_free(table); + table_pending_add_free(table); + table_pending_modify0_free(table); + table_pending_modify1_free(table); + table_pending_delete_free(table); + table_pending_default_free(table); + } + + free(ctl->tables); + ctl->tables = NULL; +} + +static void +table_state_free(struct rte_swx_ctl_pipeline *ctl) +{ + uint32_t i; + + if (!ctl->ts_next) + return; + + /* For each table, free its table state. */ + for (i = 0; i < ctl->info.n_tables; i++) { + struct table *table = &ctl->tables[i]; + struct rte_swx_table_state *ts = &ctl->ts_next[i]; + + /* Default action data. */ + free(ts->default_action_data); + + /* Table object. */ + if (!table->is_stub && table->ops.free && ts->obj) + table->ops.free(ts->obj); + } + + free(ctl->ts_next); + ctl->ts_next = NULL; +} + +static int +table_state_create(struct rte_swx_ctl_pipeline *ctl) +{ + int status = 0; + uint32_t i; + + ctl->ts_next = calloc(ctl->info.n_tables, + sizeof(struct rte_swx_table_state)); + if (!ctl->ts_next) { + status = -ENOMEM; + goto error; + } + + for (i = 0; i < ctl->info.n_tables; i++) { + struct table *table = &ctl->tables[i]; + struct rte_swx_table_state *ts = &ctl->ts[i]; + struct rte_swx_table_state *ts_next = &ctl->ts_next[i]; + + /* Table object. */ + if (!table->is_stub) { + ts_next->obj = table->ops.create(&table->params, + &table->entries, + table->info.args, + ctl->numa_node); + if (!ts_next->obj) { + status = -ENODEV; + goto error; + } + } + + /* Default action data: duplicate from current table state. */ + ts_next->default_action_data = + malloc(table->params.action_data_size); + if (!ts_next->default_action_data) { + status = -ENOMEM; + goto error; + } + + memcpy(ts_next->default_action_data, + ts->default_action_data, + table->params.action_data_size); + + ts_next->default_action_id = ts->default_action_id; + } + + return 0; + +error: + table_state_free(ctl); + return status; +} + +void +rte_swx_ctl_pipeline_free(struct rte_swx_ctl_pipeline *ctl) +{ + if (!ctl) + return; + + action_free(ctl); + + table_state_free(ctl); + + table_free(ctl); + + free(ctl); +} + +struct rte_swx_ctl_pipeline * +rte_swx_ctl_pipeline_create(struct rte_swx_pipeline *p) +{ + struct rte_swx_ctl_pipeline *ctl = NULL; + uint32_t i; + int status; + + if (!p) + goto error; + + ctl = calloc(1, sizeof(struct rte_swx_ctl_pipeline)); + if (!ctl) + goto error; + + /* info. */ + status = rte_swx_ctl_pipeline_info_get(p, &ctl->info); + if (status) + goto error; + + /* numa_node. */ + status = rte_swx_ctl_pipeline_numa_node_get(p, &ctl->numa_node); + if (status) + goto error; + + /* p. */ + ctl->p = p; + + /* actions. */ + ctl->actions = calloc(ctl->info.n_actions, sizeof(struct action)); + if (!ctl->actions) + goto error; + + for (i = 0; i < ctl->info.n_actions; i++) { + struct action *a = &ctl->actions[i]; + uint32_t j; + + /* info. */ + status = rte_swx_ctl_action_info_get(p, i, &a->info); + if (status) + goto error; + + /* args. */ + a->args = calloc(a->info.n_args, + sizeof(struct rte_swx_ctl_action_arg_info)); + if (!a->args) + goto error; + + for (j = 0; j < a->info.n_args; j++) { + status = rte_swx_ctl_action_arg_info_get(p, + i, + j, + &a->args[j]); + if (status) + goto error; + } + + /* data_size. */ + for (j = 0; j < a->info.n_args; j++) { + struct rte_swx_ctl_action_arg_info *info = &a->args[j]; + + a->data_size += info->n_bits; + } + + a->data_size = (a->data_size + 7) / 8; + } + + /* tables. */ + ctl->tables = calloc(ctl->info.n_tables, sizeof(struct table)); + if (!ctl->tables) + goto error; + + for (i = 0; i < ctl->info.n_tables; i++) { + struct table *t = &ctl->tables[i]; + + TAILQ_INIT(&t->entries); + TAILQ_INIT(&t->pending_add); + TAILQ_INIT(&t->pending_modify0); + TAILQ_INIT(&t->pending_modify1); + TAILQ_INIT(&t->pending_delete); + } + + for (i = 0; i < ctl->info.n_tables; i++) { + struct table *t = &ctl->tables[i]; + uint32_t j; + + /* info. */ + status = rte_swx_ctl_table_info_get(p, i, &t->info); + if (status) + goto error; + + /* mf. */ + t->mf = calloc(t->info.n_match_fields, + sizeof(struct rte_swx_ctl_table_match_field_info)); + if (!t->mf) + goto error; + + for (j = 0; j < t->info.n_match_fields; j++) { + status = rte_swx_ctl_table_match_field_info_get(p, + i, + j, + &t->mf[j]); + if (status) + goto error; + } + + /* actions. */ + t->actions = calloc(t->info.n_actions, + sizeof(struct rte_swx_ctl_table_action_info)); + if (!t->actions) + goto error; + + for (j = 0; j < t->info.n_actions; j++) { + status = rte_swx_ctl_table_action_info_get(p, + i, + j, + &t->actions[j]); + if (status || + t->actions[j].action_id >= ctl->info.n_actions) + goto error; + } + + /* ops, is_stub. */ + status = rte_swx_ctl_table_ops_get(p, i, &t->ops, &t->is_stub); + if (status) + goto error; + + if ((t->is_stub && t->info.n_match_fields) || + (!t->is_stub && !t->info.n_match_fields)) + goto error; + + /* params. */ + status = table_params_get(ctl, i); + if (status) + goto error; + } + + /* ts. */ + status = rte_swx_pipeline_table_state_get(p, &ctl->ts); + if (status) + goto error; + + /* ts_next. */ + status = table_state_create(ctl); + if (status) + goto error; + + return ctl; + +error: + rte_swx_ctl_pipeline_free(ctl); + return NULL; +} + +int +rte_swx_ctl_pipeline_table_entry_add(struct rte_swx_ctl_pipeline *ctl, + const char *table_name, + struct rte_swx_table_entry *entry) +{ + struct table *table; + struct rte_swx_table_entry *new_entry, *existing_entry; + uint32_t table_id; + + CHECK(ctl, EINVAL); + CHECK(table_name && table_name[0], EINVAL); + + table = table_find(ctl, table_name); + CHECK(table, EINVAL); + table_id = table - ctl->tables; + + new_entry = table_entry_duplicate(ctl, table_id, entry, 1, 1); + CHECK(new_entry, ENOMEM); + + /* The new entry is found in the table->entries list: + * - Add the new entry to the table->pending_modify1 list; + * - Move the existing entry from the table->entries list to the + * table->pending_modify0 list. + */ + existing_entry = table_entries_find(table, entry); + if (existing_entry) { + TAILQ_INSERT_TAIL(&table->pending_modify1, + new_entry, + node); + + TAILQ_REMOVE(&table->entries, + existing_entry, + node); + + TAILQ_INSERT_TAIL(&table->pending_modify0, + existing_entry, + node); + + return 0; + } + + /* The new entry is found in the table->pending_add list: + * - Replace the entry in the table->pending_add list with the new entry + * (and free the replaced entry). + */ + existing_entry = table_pending_add_find(table, entry); + if (existing_entry) { + TAILQ_INSERT_AFTER(&table->pending_add, + existing_entry, + new_entry, + node); + + TAILQ_REMOVE(&table->pending_add, + existing_entry, + node); + + table_entry_free(existing_entry); + + return 0; + } + + /* The new entry is found in the table->pending_modify1 list: + * - Replace the entry in the table->pending_modify1 list with the new + * entry (and free the replaced entry). + */ + existing_entry = table_pending_modify1_find(table, entry); + if (existing_entry) { + TAILQ_INSERT_AFTER(&table->pending_modify1, + existing_entry, + new_entry, + node); + + TAILQ_REMOVE(&table->pending_modify1, + existing_entry, + node); + + table_entry_free(existing_entry); + + return 0; + } + + /* The new entry is found in the table->pending_delete list: + * - Add the new entry to the table->pending_modify1 list; + * - Move the existing entry from the table->pending_delete list to the + * table->pending_modify0 list. + */ + existing_entry = table_pending_delete_find(table, entry); + if (existing_entry) { + TAILQ_INSERT_TAIL(&table->pending_modify1, + new_entry, + node); + + TAILQ_REMOVE(&table->pending_delete, + existing_entry, + node); + + TAILQ_INSERT_TAIL(&table->pending_modify0, + existing_entry, + node); + + return 0; + } + + /* The new entry is not found in any of the above lists: + * - Add the new entry to the table->pending_add list. + */ + TAILQ_INSERT_TAIL(&table->pending_add, new_entry, node); + + return 0; +} + +int +rte_swx_ctl_pipeline_table_entry_delete(struct rte_swx_ctl_pipeline *ctl, + const char *table_name, + struct rte_swx_table_entry *entry) +{ + struct table *table; + struct rte_swx_table_entry *existing_entry; + uint32_t table_id; + + CHECK(ctl, EINVAL); + + CHECK(table_name && table_name[0], EINVAL); + table = table_find(ctl, table_name); + CHECK(table, EINVAL); + table_id = table - ctl->tables; + + CHECK(entry, EINVAL); + CHECK(!table_entry_check(ctl, table_id, entry, 1, 0), EINVAL); + + /* The entry is found in the table->entries list: + * - Move the existing entry from the table->entries list to to the + * table->pending_delete list. + */ + existing_entry = table_entries_find(table, entry); + if (existing_entry) { + TAILQ_REMOVE(&table->entries, + existing_entry, + node); + + TAILQ_INSERT_TAIL(&table->pending_delete, + existing_entry, + node); + + return 0; + } + + /* The entry is found in the table->pending_add list: + * - Remove the entry from the table->pending_add list and free it. + */ + existing_entry = table_pending_add_find(table, entry); + if (existing_entry) { + TAILQ_REMOVE(&table->pending_add, + existing_entry, + node); + + table_entry_free(existing_entry); + } + + /* The entry is found in the table->pending_modify1 list: + * - Free the entry in the table->pending_modify1 list; + * - Move the existing entry from the table->pending_modify0 list to the + * table->pending_delete list. + */ + existing_entry = table_pending_modify1_find(table, entry); + if (existing_entry) { + struct rte_swx_table_entry *real_existing_entry; + + TAILQ_REMOVE(&table->pending_modify1, + existing_entry, + node); + + table_entry_free(existing_entry); + + real_existing_entry = table_pending_modify0_find(table, entry); + CHECK(real_existing_entry, EINVAL); /* Coverity. */ + + TAILQ_REMOVE(&table->pending_modify0, + real_existing_entry, + node); + + TAILQ_INSERT_TAIL(&table->pending_delete, + real_existing_entry, + node); + + return 0; + } + + /* The entry is found in the table->pending_delete list: + * - Do nothing: the existing entry is already in the + * table->pending_delete list, i.e. already marked for delete, so + * simply keep it there as it is. + */ + + /* The entry is not found in any of the above lists: + * - Do nothing: no existing entry to delete. + */ + + return 0; +} + +int +rte_swx_ctl_pipeline_table_default_entry_add(struct rte_swx_ctl_pipeline *ctl, + const char *table_name, + struct rte_swx_table_entry *entry) +{ + struct table *table; + struct rte_swx_table_entry *new_entry; + uint32_t table_id; + + CHECK(ctl, EINVAL); + + CHECK(table_name && table_name[0], EINVAL); + table = table_find(ctl, table_name); + CHECK(table, EINVAL); + table_id = table - ctl->tables; + CHECK(!table->info.default_action_is_const, EINVAL); + + new_entry = table_entry_duplicate(ctl, table_id, entry, 0, 1); + CHECK(new_entry, ENOMEM); + + table_pending_default_free(table); + + table->pending_default = new_entry; + return 0; +} + +static int +table_rollfwd0(struct rte_swx_ctl_pipeline *ctl, uint32_t table_id) +{ + struct table *table = &ctl->tables[table_id]; + struct rte_swx_table_state *ts_next = &ctl->ts_next[table_id]; + struct rte_swx_table_entry *entry; + + /* Reset counters. */ + table->n_add = 0; + table->n_modify = 0; + table->n_delete = 0; + + /* Add pending rules. */ + TAILQ_FOREACH(entry, &table->pending_add, node) { + int status; + + status = table->ops.add(ts_next->obj, entry); + if (status) + return status; + + table->n_add++; + } + + /* Modify pending rules. */ + TAILQ_FOREACH(entry, &table->pending_modify1, node) { + int status; + + status = table->ops.add(ts_next->obj, entry); + if (status) + return status; + + table->n_modify++; + } + + /* Delete pending rules. */ + TAILQ_FOREACH(entry, &table->pending_delete, node) { + int status; + + status = table->ops.del(ts_next->obj, entry); + if (status) + return status; + + table->n_delete++; + } + + return 0; +} + +static void +table_rollfwd1(struct rte_swx_ctl_pipeline *ctl, uint32_t table_id) +{ + struct table *table = &ctl->tables[table_id]; + struct rte_swx_table_state *ts_next = &ctl->ts_next[table_id]; + struct action *a; + uint8_t *action_data; + uint64_t action_id; + + /* Copy the pending default entry. */ + if (!table->pending_default) + return; + + action_id = table->pending_default->action_id; + action_data = table->pending_default->action_data; + a = &ctl->actions[action_id]; + + memcpy(ts_next->default_action_data, + action_data, + a->data_size); + + ts_next->default_action_id = action_id; +} + +static void +table_rollfwd2(struct rte_swx_ctl_pipeline *ctl, uint32_t table_id) +{ + struct table *table = &ctl->tables[table_id]; + + /* Move all the pending add entries to the table, as they are now part + * of the table. + */ + table_pending_add_admit(table); + + /* Move all the pending modify1 entries to table, are they are now part + * of the table. Free up all the pending modify0 entries, as they are no + * longer part of the table. + */ + table_pending_modify1_admit(table); + table_pending_modify0_free(table); + + /* Free up all the pending delete entries, as they are no longer part of + * the table. + */ + table_pending_delete_free(table); + + /* Free up the pending default entry, as it is now part of the table. */ + table_pending_default_free(table); +} + +static void +table_rollback(struct rte_swx_ctl_pipeline *ctl, uint32_t table_id) +{ + struct table *table = &ctl->tables[table_id]; + struct rte_swx_table_state *ts_next = &ctl->ts_next[table_id]; + struct rte_swx_table_entry *entry; + + /* Add back all the entries that were just deleted. */ + TAILQ_FOREACH(entry, &table->pending_delete, node) { + if (!table->n_delete) + break; + + table->ops.add(ts_next->obj, entry); + table->n_delete--; + } + + /* Add back the old copy for all the entries that were just + * modified. + */ + TAILQ_FOREACH(entry, &table->pending_modify0, node) { + if (!table->n_modify) + break; + + table->ops.add(ts_next->obj, entry); + table->n_modify--; + } + + /* Delete all the entries that were just added. */ + TAILQ_FOREACH(entry, &table->pending_add, node) { + if (!table->n_add) + break; + + table->ops.del(ts_next->obj, entry); + table->n_add--; + } +} + +static void +table_abort(struct rte_swx_ctl_pipeline *ctl, uint32_t table_id) +{ + struct table *table = &ctl->tables[table_id]; + + /* Free up all the pending add entries, as none of them is part of the + * table. + */ + table_pending_add_free(table); + + /* Free up all the pending modify1 entries, as none of them made it to + * the table. Add back all the pending modify0 entries, as none of them + * was deleted from the table. + */ + table_pending_modify1_free(table); + table_pending_modify0_admit(table); + + /* Add back all the pending delete entries, as none of them was deleted + * from the table. + */ + table_pending_delete_admit(table); + + /* Free up the pending default entry, as it is no longer going to be + * added to the table. + */ + table_pending_default_free(table); +} + +int +rte_swx_ctl_pipeline_commit(struct rte_swx_ctl_pipeline *ctl, int abort_on_fail) +{ + struct rte_swx_table_state *ts; + int status = 0; + uint32_t i; + + CHECK(ctl, EINVAL); + + /* Operate the changes on the current ts_next before it becomes the new + * ts. + */ + for (i = 0; i < ctl->info.n_tables; i++) { + status = table_rollfwd0(ctl, i); + if (status) + goto rollback; + } + + for (i = 0; i < ctl->info.n_tables; i++) + table_rollfwd1(ctl, i); + + /* Swap the table state for the data plane. The current ts and ts_next + * become the new ts_next and ts, respectively. + */ + rte_swx_pipeline_table_state_set(ctl->p, ctl->ts_next); + usleep(100); + ts = ctl->ts; + ctl->ts = ctl->ts_next; + ctl->ts_next = ts; + + /* Operate the changes on the current ts_next, which is the previous ts. + */ + for (i = 0; i < ctl->info.n_tables; i++) { + table_rollfwd0(ctl, i); + table_rollfwd1(ctl, i); + table_rollfwd2(ctl, i); + } + + return 0; + +rollback: + for (i = 0; i < ctl->info.n_tables; i++) { + table_rollback(ctl, i); + if (abort_on_fail) + table_abort(ctl, i); + } + + return status; +} + +void +rte_swx_ctl_pipeline_abort(struct rte_swx_ctl_pipeline *ctl) +{ + uint32_t i; + + if (!ctl) + return; + + for (i = 0; i < ctl->info.n_tables; i++) + table_abort(ctl, i); +} + +#define RTE_SWX_CTL_ENTRY_TOKENS_MAX 256 + +struct rte_swx_table_entry * +rte_swx_ctl_pipeline_table_entry_read(struct rte_swx_ctl_pipeline *ctl, + const char *table_name, + const char *string) +{ + char *tokens[RTE_SWX_CTL_ENTRY_TOKENS_MAX]; + struct table *table; + struct action *action; + struct rte_swx_table_entry *entry = NULL; + char *s0 = NULL, *s; + uint32_t n_tokens = 0, arg_offset = 0, i; + + /* Check input arguments. */ + if (!ctl) + goto error; + + if (!table_name || !table_name[0]) + goto error; + + table = table_find(ctl, table_name); + if (!table) + goto error; + + if (!string || !string[0]) + goto error; + + /* Memory allocation. */ + s0 = strdup(string); + if (!s0) + goto error; + + entry = table_entry_alloc(table); + if (!entry) + goto error; + + /* Parse the string into tokens. */ + for (s = s0; ; ) { + char *token; + + token = strtok_r(s, " \f\n\r\t\v", &s); + if (!token) + break; + + if (n_tokens >= RTE_SWX_CTL_ENTRY_TOKENS_MAX) + goto error; + + tokens[n_tokens] = token; + n_tokens++; + } + + if ((n_tokens < 3 + table->info.n_match_fields) || + strcmp(tokens[0], "match") || + strcmp(tokens[1 + table->info.n_match_fields], "action")) + goto error; + + action = action_find(ctl, tokens[2 + table->info.n_match_fields]); + if (!action) + goto error; + + if (n_tokens != 3 + table->info.n_match_fields + + action->info.n_args * 2) + goto error; + + /* + * Match. + */ + for (i = 0; i < table->info.n_match_fields; i++) { + struct rte_swx_ctl_table_match_field_info *mf = &table->mf[i]; + char *mf_val = tokens[1 + i]; + uint64_t val; + + val = strtoull(mf_val, &mf_val, 0); + if (mf_val[0]) + goto error; + + /* Endianness conversion. */ + if (mf->is_header) + val = field_hton(val, mf->n_bits); + + /* Copy key and key_mask to entry. */ + memcpy(&entry->key[(mf->offset - table->mf[0].offset) / 8], + (uint8_t *)&val, + mf->n_bits / 8); + + /* TBD Set entry->key_mask for wildcard and LPM tables. */ + } + + /* + * Action. + */ + /* action_id. */ + entry->action_id = action - ctl->actions; + + /* action_data. */ + for (i = 0; i < action->info.n_args; i++) { + struct rte_swx_ctl_action_arg_info *arg = &action->args[i]; + char *arg_name, *arg_val; + uint64_t val; + int is_nbo = 0; + + arg_name = tokens[3 + table->info.n_match_fields + i * 2]; + arg_val = tokens[3 + table->info.n_match_fields + i * 2 + 1]; + + if (strcmp(arg_name, arg->name) || + (strlen(arg_val) < 4) || + ((arg_val[0] != 'H') && (arg_val[0] != 'N')) || + (arg_val[1] != '(') || + (arg_val[strlen(arg_val) - 1] != ')')) + goto error; + + if (arg_val[0] == 'N') + is_nbo = 1; + + arg_val[strlen(arg_val) - 1] = 0; /* Remove the ')'. */ + arg_val += 2; /* Remove the "H(" or "N(". */ + + val = strtoull(arg_val, &arg_val, 0); + if (arg_val[0]) + goto error; + + /* Endianness conversion. */ + if (is_nbo) + val = field_hton(val, arg->n_bits); + + /* Copy to entry. */ + memcpy(&entry->action_data[arg_offset], + (uint8_t *)&val, + arg->n_bits / 8); + + arg_offset += arg->n_bits / 8; + } + + return entry; + +error: + table_entry_free(entry); + free(s0); + return NULL; +} + +int +rte_swx_ctl_pipeline_table_fprintf(FILE *f, + struct rte_swx_ctl_pipeline *ctl, + const char *table_name) +{ + struct table *table; + struct rte_swx_table_entry *entry; + uint32_t n_entries = 0, i; + + if (!f || !ctl || !table_name || !table_name[0]) + return -EINVAL; + + table = table_find(ctl, table_name); + if (!table) + return -EINVAL; + + /* Table. */ + fprintf(f, "# Table %s: key size %u bytes, key offset %u, key mask [", + table->info.name, + table->params.key_size, + table->params.key_offset); + + for (i = 0; i < table->params.key_size; i++) + fprintf(f, "%02x", table->params.key_mask0[i]); + + fprintf(f, "], action data size %u bytes\n", + table->params.action_data_size); + + /* Table entries. */ + TAILQ_FOREACH(entry, &table->entries, node) { + struct action *action = &ctl->actions[entry->action_id]; + + fprintf(f, "match "); + for (i = 0; i < table->params.key_size; i++) + fprintf(f, "%02x", entry->key[i]); + + fprintf(f, " action %s ", action->info.name); + for (i = 0; i < action->data_size; i++) + fprintf(f, "%02x", entry->action_data[i]); + + fprintf(f, "\n"); + n_entries++; + } + + TAILQ_FOREACH(entry, &table->pending_modify0, node) { + struct action *action = &ctl->actions[entry->action_id]; + + fprintf(f, "match "); + for (i = 0; i < table->params.key_size; i++) + fprintf(f, "%02x", entry->key[i]); + + fprintf(f, " action %s ", action->info.name); + for (i = 0; i < action->data_size; i++) + fprintf(f, "%02x", entry->action_data[i]); + + fprintf(f, "\n"); + n_entries++; + } + + TAILQ_FOREACH(entry, &table->pending_delete, node) { + struct action *action = &ctl->actions[entry->action_id]; + + fprintf(f, "match "); + for (i = 0; i < table->params.key_size; i++) + fprintf(f, "%02x", entry->key[i]); + + fprintf(f, " action %s ", action->info.name); + for (i = 0; i < action->data_size; i++) + fprintf(f, "%02x", entry->action_data[i]); + + fprintf(f, "\n"); + n_entries++; + } + + fprintf(f, "# Table %s currently has %u entries.\n", + table_name, + n_entries); + return 0; +} diff --git a/lib/librte_pipeline/rte_swx_ctl.h b/lib/librte_pipeline/rte_swx_ctl.h index 54b895f0ad..bab1894944 100644 --- a/lib/librte_pipeline/rte_swx_ctl.h +++ b/lib/librte_pipeline/rte_swx_ctl.h @@ -391,6 +391,176 @@ int rte_swx_pipeline_table_state_set(struct rte_swx_pipeline *p, struct rte_swx_table_state *table_state); +/* + * High Level Reference Table Update API. + */ + +/** Pipeline control opaque data structure. */ +struct rte_swx_ctl_pipeline; + +/** + * Pipeline control create + * + * @param[in] p + * Pipeline handle. + * @return + * Pipeline control handle, on success, or NULL, on error. + */ +__rte_experimental +struct rte_swx_ctl_pipeline * +rte_swx_ctl_pipeline_create(struct rte_swx_pipeline *p); + +/** + * Pipeline table entry add + * + * Schedule entry for addition to table or update as part of the next commit + * operation. + * + * @param[in] ctl + * Pipeline control handle. + * @param[in] table_name + * Table name. + * @param[in] entry + * Entry to be added to the table. + * @return + * 0 on success or the following error codes otherwise: + * -EINVAL: Invalid argument. + */ +__rte_experimental +int +rte_swx_ctl_pipeline_table_entry_add(struct rte_swx_ctl_pipeline *ctl, + const char *table_name, + struct rte_swx_table_entry *entry); + +/** + * Pipeline table default entry add + * + * Schedule table default entry update as part of the next commit operation. + * + * @param[in] ctl + * Pipeline control handle. + * @param[in] table_name + * Table name. + * @param[in] entry + * The new table default entry. The *key* and *key_mask* entry fields are + * ignored. + * @return + * 0 on success or the following error codes otherwise: + * -EINVAL: Invalid argument. + */ +__rte_experimental +int +rte_swx_ctl_pipeline_table_default_entry_add(struct rte_swx_ctl_pipeline *ctl, + const char *table_name, + struct rte_swx_table_entry *entry); + +/** + * Pipeline table entry delete + * + * Schedule entry for deletion from table as part of the next commit operation. + * Request is silently discarded if no such entry exists. + * + * @param[in] ctl + * Pipeline control handle. + * @param[in] table_name + * Table name. + * @param[in] entry + * Entry to be deleted from the table. The *action_id* and *action_data* entry + * fields are ignored. + * @return + * 0 on success or the following error codes otherwise: + * -EINVAL: Invalid argument. + */ +__rte_experimental +int +rte_swx_ctl_pipeline_table_entry_delete(struct rte_swx_ctl_pipeline *ctl, + const char *table_name, + struct rte_swx_table_entry *entry); + +/** + * Pipeline commit + * + * Perform all the scheduled table work. + * + * @param[in] ctl + * Pipeline control handle. + * @param[in] abort_on_fail + * When non-zero (false), all the scheduled work is discarded after a failed + * commit. Otherwise, the scheduled work is still kept pending for the next + * commit. + * @return + * 0 on success or the following error codes otherwise: + * -EINVAL: Invalid argument. + */ +__rte_experimental +int +rte_swx_ctl_pipeline_commit(struct rte_swx_ctl_pipeline *ctl, + int abort_on_fail); + +/** + * Pipeline abort + * + * Discard all the scheduled table work. + * + * @param[in] ctl + * Pipeline control handle. + */ +__rte_experimental +void +rte_swx_ctl_pipeline_abort(struct rte_swx_ctl_pipeline *ctl); + +/** + * Pipeline table entry read + * + * Read table entry from string. + * + * @param[in] ctl + * Pipeline control handle. + * @param[in] table_name + * Table name. + * @param[in] string + * String containing the table entry. + * @return + * 0 on success or the following error codes otherwise: + * -EINVAL: Invalid argument. + */ +__rte_experimental +struct rte_swx_table_entry * +rte_swx_ctl_pipeline_table_entry_read(struct rte_swx_ctl_pipeline *ctl, + const char *table_name, + const char *string); + +/** + * Pipeline table print to file + * + * Print all the table entries to file. + * + * @param[in] f + * Output file. + * @param[in] ctl + * Pipeline control handle. + * @param[in] table_name + * Table name. + * @return + * 0 on success or the following error codes otherwise: + * -EINVAL: Invalid argument. + */ +__rte_experimental +int +rte_swx_ctl_pipeline_table_fprintf(FILE *f, + struct rte_swx_ctl_pipeline *ctl, + const char *table_name); + +/** + * Pipeline control free + * + * @param[in] ctl + * Pipeline control handle. + */ +__rte_experimental +void +rte_swx_ctl_pipeline_free(struct rte_swx_ctl_pipeline *ctl); + #ifdef __cplusplus } #endif