From 7a6d87fb83983514268d2097b72c136a0b5ba1ea Mon Sep 17 00:00:00 2001 From: Jiawen Wu Date: Fri, 18 Dec 2020 17:36:47 +0800 Subject: [PATCH] net/txgbe: parse RSS filter Check if the rule is a RSS filter rule, and get the RSS info. Signed-off-by: Jiawen Wu --- drivers/net/txgbe/txgbe_flow.c | 119 +++++++++++++++++++++++++++++++++ 1 file changed, 119 insertions(+) diff --git a/drivers/net/txgbe/txgbe_flow.c b/drivers/net/txgbe/txgbe_flow.c index 47bebb98b3..313f985150 100644 --- a/drivers/net/txgbe/txgbe_flow.c +++ b/drivers/net/txgbe/txgbe_flow.c @@ -2370,6 +2370,120 @@ step_next: return ret; } +static int +txgbe_parse_rss_filter(struct rte_eth_dev *dev, + const struct rte_flow_attr *attr, + const struct rte_flow_action actions[], + struct txgbe_rte_flow_rss_conf *rss_conf, + struct rte_flow_error *error) +{ + const struct rte_flow_action *act; + const struct rte_flow_action_rss *rss; + uint16_t n; + + /** + * rss only supports forwarding, + * check if the first not void action is RSS. + */ + act = next_no_void_action(actions, NULL); + if (act->type != RTE_FLOW_ACTION_TYPE_RSS) { + memset(rss_conf, 0, sizeof(struct txgbe_rte_flow_rss_conf)); + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION, + act, "Not supported action."); + return -rte_errno; + } + + rss = (const struct rte_flow_action_rss *)act->conf; + + if (!rss || !rss->queue_num) { + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION, + act, + "no valid queues"); + return -rte_errno; + } + + for (n = 0; n < rss->queue_num; n++) { + if (rss->queue[n] >= dev->data->nb_rx_queues) { + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION, + act, + "queue id > max number of queues"); + return -rte_errno; + } + } + + if (rss->func != RTE_ETH_HASH_FUNCTION_DEFAULT) + return rte_flow_error_set + (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION, act, + "non-default RSS hash functions are not supported"); + if (rss->level) + return rte_flow_error_set + (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION, act, + "a nonzero RSS encapsulation level is not supported"); + if (rss->key_len && rss->key_len != RTE_DIM(rss_conf->key)) + return rte_flow_error_set + (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION, act, + "RSS hash key must be exactly 40 bytes"); + if (rss->queue_num > RTE_DIM(rss_conf->queue)) + return rte_flow_error_set + (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION, act, + "too many queues for RSS context"); + if (txgbe_rss_conf_init(rss_conf, rss)) + return rte_flow_error_set + (error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION, act, + "RSS context initialization failure"); + + /* check if the next not void item is END */ + act = next_no_void_action(actions, act); + if (act->type != RTE_FLOW_ACTION_TYPE_END) { + memset(rss_conf, 0, sizeof(struct rte_eth_rss_conf)); + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION, + act, "Not supported action."); + return -rte_errno; + } + + /* parse attr */ + /* must be input direction */ + if (!attr->ingress) { + memset(rss_conf, 0, sizeof(struct txgbe_rte_flow_rss_conf)); + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ATTR_INGRESS, + attr, "Only support ingress."); + return -rte_errno; + } + + /* not supported */ + if (attr->egress) { + memset(rss_conf, 0, sizeof(struct txgbe_rte_flow_rss_conf)); + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, + attr, "Not support egress."); + return -rte_errno; + } + + /* not supported */ + if (attr->transfer) { + memset(rss_conf, 0, sizeof(struct txgbe_rte_flow_rss_conf)); + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER, + attr, "No support for transfer."); + return -rte_errno; + } + + if (attr->priority > 0xFFFF) { + memset(rss_conf, 0, sizeof(struct txgbe_rte_flow_rss_conf)); + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY, + attr, "Error priority."); + return -rte_errno; + } + + return 0; +} + /** * Create or destroy a flow rule. * Theorically one rule can match more than one filters. @@ -2404,6 +2518,7 @@ txgbe_flow_validate(struct rte_eth_dev *dev, struct rte_eth_syn_filter syn_filter; struct txgbe_l2_tunnel_conf l2_tn_filter; struct txgbe_fdir_rule fdir_rule; + struct txgbe_rte_flow_rss_conf rss_conf; int ret = 0; memset(&ntuple_filter, 0, sizeof(struct rte_eth_ntuple_filter)); @@ -2436,6 +2551,10 @@ txgbe_flow_validate(struct rte_eth_dev *dev, if (!ret) return 0; + memset(&rss_conf, 0, sizeof(struct txgbe_rte_flow_rss_conf)); + ret = txgbe_parse_rss_filter(dev, attr, + actions, &rss_conf, error); + return ret; } -- 2.20.1