[dpdk-dev] [PATCH v2] net/i40e: move RSS to flow API
Zhang, Qi Z
qi.z.zhang at intel.com
Tue Jan 9 03:33:48 CET 2018
Checked with author offline.
Require more comments to explain the acceptable pattern for i40e_flow_parse_rss_pattern
and also need to correct the logic since current implementation will accept any combination of ETH and VLAN pattern which does not make sense.
Regards
Qi
> -----Original Message-----
> From: Zhao1, Wei
> Sent: Monday, January 8, 2018 4:36 PM
> To: dev at dpdk.org
> Cc: Zhang, Qi Z <qi.z.zhang at intel.com>; Zhao1, Wei <wei.zhao1 at intel.com>
> Subject: [PATCH v2] net/i40e: move RSS to flow API
>
> Rte_flow actually defined to include RSS, but till now, RSS is out of rte_flow.
> This patch is to move i40e existing RSS to rte_flow.
> This patch also enable queue region configuration using flow API for i40e.
>
> Signed-off-by: Wei Zhao <wei.zhao1 at intel.com>
>
> ---
>
> v2:
> -change some code style.
> ---
> drivers/net/i40e/i40e_ethdev.c | 91 +++++++++++
> drivers/net/i40e/i40e_ethdev.h | 11 ++
> drivers/net/i40e/i40e_flow.c | 340
> +++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 442 insertions(+)
>
> diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
> index 811cc9f..75b3bf3 100644
> --- a/drivers/net/i40e/i40e_ethdev.c
> +++ b/drivers/net/i40e/i40e_ethdev.c
> @@ -1349,6 +1349,10 @@ eth_i40e_dev_init(struct rte_eth_dev *dev)
> /* initialize queue region configuration */
> i40e_init_queue_region_conf(dev);
>
> + /* initialize rss configuration from rte_flow */
> + memset(&pf->rss_info, 0,
> + sizeof(struct i40e_rte_flow_rss_conf));
> +
> return 0;
>
> err_init_fdir_filter_list:
> @@ -10943,12 +10947,23 @@ i40e_tunnel_filter_restore(struct i40e_pf *pf)
> }
> }
>
> +/* Restore rss filter */
> +static inline void
> +i40e_rss_filter_restore(struct i40e_pf *pf) {
> + struct i40e_rte_flow_rss_conf *conf =
> + &pf->rss_info;
> + if (conf->num)
> + i40e_config_rss_filter(pf, conf, TRUE); }
> +
> static void
> i40e_filter_restore(struct i40e_pf *pf) {
> i40e_ethertype_filter_restore(pf);
> i40e_tunnel_filter_restore(pf);
> i40e_fdir_filter_restore(pf);
> + i40e_rss_filter_restore(pf);
> }
>
> static bool
> @@ -11366,6 +11381,82 @@ i40e_cloud_filter_qinq_create(struct i40e_pf
> *pf)
> return ret;
> }
>
> +int
> +i40e_config_rss_filter(struct i40e_pf *pf,
> + struct i40e_rte_flow_rss_conf *conf, bool add) {
> + struct i40e_hw *hw = I40E_PF_TO_HW(pf);
> + uint32_t i, lut = 0;
> + uint16_t j, num;
> + struct rte_eth_rss_conf rss_conf = conf->rss_conf;
> + struct i40e_rte_flow_rss_conf *rss_info = &pf->rss_info;
> +
> + if (!add) {
> + if (memcmp(conf, rss_info,
> + sizeof(struct i40e_rte_flow_rss_conf)) == 0) {
> + i40e_pf_disable_rss(pf);
> + memset(rss_info, 0,
> + sizeof(struct i40e_rte_flow_rss_conf));
> + return 0;
> + }
> + return -EINVAL;
> + }
> +
> + if (rss_info->num)
> + return -EINVAL;
> +
> + /* If both VMDQ and RSS enabled, not all of PF queues are configured.
> + * It's necessary to calculate the actual PF queues that are configured.
> + */
> + if (pf->dev_data->dev_conf.rxmode.mq_mode &
> ETH_MQ_RX_VMDQ_FLAG)
> + num = i40e_pf_calc_configured_queues_num(pf);
> + else
> + num = pf->dev_data->nb_rx_queues;
> +
> + num = RTE_MIN(num, conf->num);
> + PMD_DRV_LOG(INFO, "Max of contiguous %u PF queues are configured",
> + num);
> +
> + if (num == 0) {
> + PMD_DRV_LOG(ERR, "No PF queues are configured to enable RSS");
> + return -ENOTSUP;
> + }
> +
> + /* Fill in redirection table */
> + for (i = 0, j = 0; i < hw->func_caps.rss_table_size; i++, j++) {
> + if (j == num)
> + j = 0;
> + lut = (lut << 8) | (conf->queue[j] & ((0x1 <<
> + hw->func_caps.rss_table_entry_width) - 1));
> + if ((i & 3) == 3)
> + I40E_WRITE_REG(hw, I40E_PFQF_HLUT(i >> 2), lut);
> + }
> +
> + if ((rss_conf.rss_hf & pf->adapter->flow_types_mask) == 0) {
> + i40e_pf_disable_rss(pf);
> + return 0;
> + }
> + if (rss_conf.rss_key == NULL || rss_conf.rss_key_len <
> + (I40E_PFQF_HKEY_MAX_INDEX + 1) * sizeof(uint32_t)) {
> + /* Random default keys */
> + static uint32_t rss_key_default[] = {0x6b793944,
> + 0x23504cb5, 0x5bea75b6, 0x309f4f12, 0x3dc0a2b8,
> + 0x024ddcdf, 0x339b8ca0, 0x4c4af64a, 0x34fac605,
> + 0x55d85839, 0x3a58997d, 0x2ec938e1, 0x66031581};
> +
> + rss_conf.rss_key = (uint8_t *)rss_key_default;
> + rss_conf.rss_key_len = (I40E_PFQF_HKEY_MAX_INDEX + 1) *
> + sizeof(uint32_t);
> + }
> +
> + return i40e_hw_rss_hash_set(pf, &rss_conf);
> +
> + rte_memcpy(rss_info,
> + conf, sizeof(struct i40e_rte_flow_rss_conf));
> +
> + return 0;
> +}
> +
> RTE_INIT(i40e_init_log);
> static void
> i40e_init_log(void)
> diff --git a/drivers/net/i40e/i40e_ethdev.h b/drivers/net/i40e/i40e_ethdev.h
> index cd67453..0a59e39 100644
> --- a/drivers/net/i40e/i40e_ethdev.h
> +++ b/drivers/net/i40e/i40e_ethdev.h
> @@ -891,6 +891,13 @@ struct i40e_customized_pctype {
> bool valid; /* Check if it's valid */
> };
>
> +struct i40e_rte_flow_rss_conf {
> + struct rte_eth_rss_conf rss_conf; /**< RSS parameters. */
> + uint16_t queue_region_conf; /**< Queue region config flag */
> + uint16_t num; /**< Number of entries in queue[]. */
> + uint16_t queue[I40E_MAX_Q_PER_TC]; /**< Queues indices to use. */ };
> +
> /*
> * Structure to store private data specific for PF instance.
> */
> @@ -945,6 +952,7 @@ struct i40e_pf {
> struct i40e_fdir_info fdir; /* flow director info */
> struct i40e_ethertype_rule ethertype; /* Ethertype filter rule */
> struct i40e_tunnel_rule tunnel; /* Tunnel filter rule */
> + struct i40e_rte_flow_rss_conf rss_info; /* rss info */
> struct i40e_queue_regions queue_region; /* queue region info */
> struct i40e_fc_conf fc_conf; /* Flow control conf */
> struct i40e_mirror_rule_list mirror_list; @@ -1071,6 +1079,7 @@ union
> i40e_filter_t {
> struct i40e_fdir_filter_conf fdir_filter;
> struct rte_eth_tunnel_filter_conf tunnel_filter;
> struct i40e_tunnel_filter_conf consistent_tunnel_filter;
> + struct i40e_rte_flow_rss_conf rss_conf;
> };
>
> typedef int (*parse_filter_t)(struct rte_eth_dev *dev, @@ -1198,6 +1207,8
> @@ int i40e_dcb_init_configure(struct rte_eth_dev *dev, bool sw_dcb); int
> i40e_flush_queue_region_all_conf(struct rte_eth_dev *dev,
> struct i40e_hw *hw, struct i40e_pf *pf, uint16_t on); void
> i40e_init_queue_region_conf(struct rte_eth_dev *dev);
> +int i40e_config_rss_filter(struct i40e_pf *pf,
> + struct i40e_rte_flow_rss_conf *conf, bool add);
>
> #define I40E_DEV_TO_PCI(eth_dev) \
> RTE_DEV_TO_PCI((eth_dev)->device)
> diff --git a/drivers/net/i40e/i40e_flow.c b/drivers/net/i40e/i40e_flow.c index
> 7e4936e..4d29818 100644
> --- a/drivers/net/i40e/i40e_flow.c
> +++ b/drivers/net/i40e/i40e_flow.c
> @@ -138,6 +138,8 @@ static int i40e_flow_flush_fdir_filter(struct i40e_pf
> *pf); static int i40e_flow_flush_ethertype_filter(struct i40e_pf *pf); static
> int i40e_flow_flush_tunnel_filter(struct i40e_pf *pf); static int
> +i40e_flow_flush_rss_filter(struct rte_eth_dev *dev); static int
> i40e_flow_parse_qinq_filter(struct rte_eth_dev *dev,
> const struct rte_flow_attr *attr,
> const struct rte_flow_item pattern[], @@ -4095,6
> +4097,301 @@ i40e_flow_parse_qinq_filter(struct rte_eth_dev *dev, }
>
> static int
> +i40e_flow_parse_rss_pattern(__rte_unused struct rte_eth_dev *dev,
> + const struct rte_flow_item *pattern,
> + struct rte_flow_error *error,
> + uint8_t *action_flag,
> + struct i40e_queue_regions *info) {
> + const struct rte_flow_item_vlan *vlan_spec, *vlan_mask;
> + const struct rte_flow_item *item = pattern;
> + enum rte_flow_item_type item_type;
> +
> + if (item->type == RTE_FLOW_ITEM_TYPE_END)
> + return 0;
> +
> + for (; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
> + if (item->last) {
> + rte_flow_error_set(error, EINVAL,
> + RTE_FLOW_ERROR_TYPE_ITEM,
> + item,
> + "Not support range");
> + return -rte_errno;
> + }
> + item_type = item->type;
> + switch (item_type) {
> + case RTE_FLOW_ITEM_TYPE_ETH:
> + *action_flag = 1;
> + break;
> + case RTE_FLOW_ITEM_TYPE_VLAN:
> + vlan_spec =
> + (const struct rte_flow_item_vlan *)item->spec;
> + vlan_mask =
> + (const struct rte_flow_item_vlan *)item->mask;
> + if (vlan_spec && vlan_mask) {
> + if (vlan_mask->tci ==
> + rte_cpu_to_be_16(I40E_TCI_MASK)) {
> + info->region[0].user_priority[0] =
> + (vlan_spec->tci >> 13) & 0x7;
> + info->region[0].user_priority_num = 1;
> + info->queue_region_number = 1;
> + *action_flag = 0;
> + }
> + }
> + break;
> + default:
> + rte_flow_error_set(error, EINVAL,
> + RTE_FLOW_ERROR_TYPE_ITEM,
> + item,
> + "Not support range");
> + return -rte_errno;
> + }
> + }
> +
> + return 0;
> +}
> +
> +static int
> +i40e_flow_parse_rss_action(struct rte_eth_dev *dev,
> + const struct rte_flow_action *actions,
> + struct rte_flow_error *error,
> + uint8_t *action_flag,
> + struct i40e_queue_regions *conf_info,
> + union i40e_filter_t *filter)
> +{
> + const struct rte_flow_action *act;
> + const struct rte_flow_action_rss *rss;
> + struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
> + struct i40e_queue_regions *info = &pf->queue_region;
> + struct i40e_rte_flow_rss_conf *rss_config =
> + &filter->rss_conf;
> + struct i40e_rte_flow_rss_conf *rss_info = &pf->rss_info;
> + uint16_t i, j, n;
> + uint32_t index = 0;
> +
> + NEXT_ITEM_OF_ACTION(act, actions, index);
> + rss = (const struct rte_flow_action_rss *)act->conf;
> +
> + /**
> + * rss only supports forwarding,
> + * check if the first not void action is RSS.
> + */
> + if (act->type != RTE_FLOW_ACTION_TYPE_RSS) {
> + memset(rss_config, 0, sizeof(struct i40e_rte_flow_rss_conf));
> + rte_flow_error_set(error, EINVAL,
> + RTE_FLOW_ERROR_TYPE_ACTION,
> + act, "Not supported action.");
> + return -rte_errno;
> + }
> +
> + if (action_flag) {
> + for (n = 0; n < 64; n++) {
> + if (rss->rss_conf->rss_hf & (1 << n)) {
> + conf_info->region[0].user_priority[0] = n;
> + conf_info->region[0].user_priority_num = 1;
> + conf_info->queue_region_number = 1;
> + break;
> + }
> + }
> + }
> +
> + for (n = 0; n < conf_info->queue_region_number; n++) {
> + if (conf_info->region[n].user_priority_num ||
> + conf_info->region[n].flowtype_num) {
> + if (!((rte_is_power_of_2(rss->num)) &&
> + rss->num <= 64)) {
> + PMD_DRV_LOG(ERR, "The region sizes should be any of the
> following values: 1, 2, 4, 8, 16, 32, 64 as long as the "
> + "total number of queues do not exceed the VSI allocation");
> + return -rte_errno;
> + }
> +
> + if (conf_info->region[n].user_priority[n] >=
> + I40E_MAX_USER_PRIORITY) {
> + PMD_DRV_LOG(ERR, "the user priority max index is 7");
> + return -rte_errno;
> + }
> +
> + if (conf_info->region[n].hw_flowtype[n] >=
> + I40E_FILTER_PCTYPE_MAX) {
> + PMD_DRV_LOG(ERR, "the hw_flowtype or PCTYPE max
> index is 63");
> + return -rte_errno;
> + }
> +
> + if (rss_info->num < rss->num ||
> + rss_info->queue[0] < rss->queue[0] ||
> + (rss->queue[0] + rss->num >
> + rss_info->num + rss_info->queue[0])) {
> + rte_flow_error_set(error, EINVAL,
> + RTE_FLOW_ERROR_TYPE_ACTION,
> + act,
> + "no valid queues");
> + return -rte_errno;
> + }
> +
> + for (i = 0; i < info->queue_region_number; i++) {
> + if (info->region[i].queue_num == rss->num &&
> + info->region[i].queue_start_index ==
> + rss->queue[0])
> + break;
> + }
> +
> + if (i == info->queue_region_number) {
> + if (i > I40E_REGION_MAX_INDEX) {
> + PMD_DRV_LOG(ERR, "the queue region max index is
> 7");
> + return -rte_errno;
> + }
> +
> + info->region[i].queue_num =
> + rss->num;
> + info->region[i].queue_start_index =
> + rss->queue[0];
> + info->region[i].region_id =
> + info->queue_region_number;
> +
> + j = info->region[i].user_priority_num;
> + if (conf_info->region[n].user_priority_num) {
> + info->region[i].user_priority[j] =
> + conf_info->
> + region[n].user_priority[0];
> + info->region[i].user_priority_num++;
> + }
> +
> + j = info->region[i].flowtype_num;
> + if (conf_info->region[n].flowtype_num) {
> + info->region[i].hw_flowtype[j] =
> + conf_info->
> + region[n].hw_flowtype[0];
> + info->region[i].flowtype_num++;
> + }
> + info->queue_region_number++;
> + } else {
> + j = info->region[i].user_priority_num;
> + if (conf_info->region[n].user_priority_num) {
> + info->region[i].user_priority[j] =
> + conf_info->
> + region[n].user_priority[0];
> + info->region[i].user_priority_num++;
> + }
> +
> + j = info->region[i].flowtype_num;
> + if (conf_info->region[n].flowtype_num) {
> + info->region[i].hw_flowtype[j] =
> + conf_info->
> + region[n].hw_flowtype[0];
> + info->region[i].flowtype_num++;
> + }
> + }
> + }
> +
> + rss_config->queue_region_conf = TRUE;
> + return 0;
> + }
> +
> + if (!rss || !rss->num) {
> + rte_flow_error_set(error, EINVAL,
> + RTE_FLOW_ERROR_TYPE_ACTION,
> + act,
> + "no valid queues");
> + return -rte_errno;
> + }
> +
> + for (n = 0; n < rss->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->rss_conf)
> + rss_config->rss_conf = *rss->rss_conf;
> + else
> + rss_config->rss_conf.rss_hf =
> + pf->adapter->flow_types_mask;
> +
> + for (n = 0; n < rss->num; ++n)
> + rss_config->queue[n] = rss->queue[n];
> + rss_config->num = rss->num;
> + index++;
> +
> + /* check if the next not void action is END */
> + NEXT_ITEM_OF_ACTION(act, actions, index);
> + if (act->type != RTE_FLOW_ACTION_TYPE_END) {
> + memset(rss_config, 0, sizeof(struct i40e_rte_flow_rss_conf));
> + rte_flow_error_set(error, EINVAL,
> + RTE_FLOW_ERROR_TYPE_ACTION,
> + act, "Not supported action.");
> + return -rte_errno;
> + }
> + rss_config->queue_region_conf = FALSE;
> +
> + return 0;
> +}
> +
> +static int
> +i40e_parse_rss_filter(struct rte_eth_dev *dev,
> + const struct rte_flow_attr *attr,
> + const struct rte_flow_item pattern[],
> + const struct rte_flow_action actions[],
> + union i40e_filter_t *filter,
> + struct rte_flow_error *error)
> +{
> + int ret;
> + struct i40e_queue_regions info;
> + uint8_t action_flag = 0;
> +
> + memset(&info, 0, sizeof(struct i40e_queue_regions));
> +
> + ret = i40e_flow_parse_rss_pattern(dev, pattern,
> + error, &action_flag, &info);
> + if (ret)
> + return ret;
> +
> + ret = i40e_flow_parse_rss_action(dev, actions, error,
> + &action_flag, &info, filter);
> + if (ret)
> + return ret;
> +
> + ret = i40e_flow_parse_attr(attr, error);
> + if (ret)
> + return ret;
> +
> + cons_filter_type = RTE_ETH_FILTER_HASH;
> +
> + return 0;
> +}
> +
> +static int
> +i40e_config_rss_filter_set(struct rte_eth_dev *dev,
> + struct i40e_rte_flow_rss_conf *conf)
> +{
> + struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
> + struct i40e_hw *hw =
> I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
> +
> + if (conf->queue_region_conf) {
> + i40e_flush_queue_region_all_conf(dev, hw, pf, 1);
> + conf->queue_region_conf = 0;
> + } else {
> + i40e_config_rss_filter(pf, conf, 1);
> + }
> + return 0;
> +}
> +
> +static int
> +i40e_config_rss_filter_del(struct rte_eth_dev *dev,
> + struct i40e_rte_flow_rss_conf *conf)
> +{
> + struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
> + struct i40e_hw *hw =
> I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
> +
> + i40e_flush_queue_region_all_conf(dev, hw, pf, 0);
> +
> + i40e_config_rss_filter(pf, conf, 0);
> + return 0;
> +}
> +
> +static int
> i40e_flow_validate(struct rte_eth_dev *dev,
> const struct rte_flow_attr *attr,
> const struct rte_flow_item pattern[], @@ -4130,6 +4427,17 @@
> i40e_flow_validate(struct rte_eth_dev *dev,
>
> memset(&cons_filter, 0, sizeof(cons_filter));
>
> + /* Get the non-void item of action */
> + while ((actions + i)->type == RTE_FLOW_ACTION_TYPE_VOID)
> + i++;
> +
> + if ((actions + i)->type == RTE_FLOW_ACTION_TYPE_RSS) {
> + ret = i40e_parse_rss_filter(dev, attr, pattern,
> + actions, &cons_filter, error);
> + return ret;
> + }
> +
> + i = 0;
> /* Get the non-void item number of pattern */
> while ((pattern + i)->type != RTE_FLOW_ITEM_TYPE_END) {
> if ((pattern + i)->type != RTE_FLOW_ITEM_TYPE_VOID) @@ -4217,6
> +4525,11 @@ i40e_flow_create(struct rte_eth_dev *dev,
> flow->rule = TAILQ_LAST(&pf->tunnel.tunnel_list,
> i40e_tunnel_filter_list);
> break;
> + case RTE_ETH_FILTER_HASH:
> + ret = i40e_config_rss_filter_set(dev,
> + &cons_filter.rss_conf);
> + flow->rule = &pf->rss_info;
> + break;
> default:
> goto free_flow;
> }
> @@ -4255,6 +4568,9 @@ i40e_flow_destroy(struct rte_eth_dev *dev,
> ret = i40e_flow_add_del_fdir_filter(dev,
> &((struct i40e_fdir_filter *)flow->rule)->fdir, 0);
> break;
> + case RTE_ETH_FILTER_HASH:
> + ret = i40e_config_rss_filter_del(dev,
> + (struct i40e_rte_flow_rss_conf *)flow->rule);
> default:
> PMD_DRV_LOG(WARNING, "Filter type (%d) not supported",
> filter_type);
> @@ -4397,6 +4713,14 @@ i40e_flow_flush(struct rte_eth_dev *dev, struct
> rte_flow_error *error)
> return -rte_errno;
> }
>
> + ret = i40e_flow_flush_rss_filter(dev);
> + if (ret) {
> + rte_flow_error_set(error, -ret,
> + RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
> + "Failed to flush rss flows.");
> + return -rte_errno;
> + }
> +
> return ret;
> }
>
> @@ -4487,3 +4811,19 @@ i40e_flow_flush_tunnel_filter(struct i40e_pf *pf)
>
> return ret;
> }
> +
> +/* remove the rss filter */
> +static int
> +i40e_flow_flush_rss_filter(struct rte_eth_dev *dev) {
> + struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
> + struct i40e_rte_flow_rss_conf *rss_info = &pf->rss_info;
> + struct i40e_hw *hw =
> I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
> + int32_t ret = -EINVAL;
> +
> + ret = i40e_flush_queue_region_all_conf(dev, hw, pf, 0);
> +
> + if (rss_info->num)
> + ret = i40e_config_rss_filter(pf, rss_info, FALSE);
> + return ret;
> +}
> --
> 2.9.3
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