Re: [dpdk-dev] [PATCH v2 12/13] net/ice: enable flow redirect on switch

["Xing, Beilei" <beilei.xing@intel.com>]

> -----Original Message-----
> From: Wang, Haiyue <haiyue.wang@intel.com>
> Sent: Thursday, April 2, 2020 3:35 PM
> To: Zhao1, Wei <wei.zhao1@intel.com>; dev@dpdk.org
> Cc: Zhang, Qi Z <qi.z.zhang@intel.com>; Peng, Yuan <yuan.peng@intel.com>;
> Lu, Nannan <nannan.lu@intel.com>; Fu, Qi <qi.fu@intel.com>; Xing, Beilei
> <beilei.xing@intel.com>
> Subject: RE: [PATCH v2 12/13] net/ice: enable flow redirect on switch
> 
> > -----Original Message-----
> > From: Zhao1, Wei <wei.zhao1@intel.com>
> > Sent: Thursday, April 2, 2020 14:46
> > To: dev@dpdk.org
> > Cc: Zhang, Qi Z <qi.z.zhang@intel.com>; Peng, Yuan
> > <yuan.peng@intel.com>; Lu, Nannan <nannan.lu@intel.com>; Fu, Qi
> > <qi.fu@intel.com>; Wang, Haiyue <haiyue.wang@intel.com>; Xing, Beilei
> > <beilei.xing@intel.com>
> > Subject: [PATCH v2 12/13] net/ice: enable flow redirect on switch
> >
> > Enable flow redirect on switch, currently only support VSI redirect.
> >
> > Signed-off-by: Beilei Xing <beilei.xing@intel.com>
> > ---
> >  drivers/net/ice/ice_switch_filter.c | 74
> > +++++++++++++++++++++++++++++
> >  1 file changed, 74 insertions(+)
> >
> > diff --git a/drivers/net/ice/ice_switch_filter.c
> > b/drivers/net/ice/ice_switch_filter.c
> > index 686f9c3e3..61adb518c 100644
> > --- a/drivers/net/ice/ice_switch_filter.c
> > +++ b/drivers/net/ice/ice_switch_filter.c
> > @@ -1420,6 +1420,79 @@ ice_switch_query(struct ice_adapter *ad
> > __rte_unused,  return -rte_errno;  }
> >
> > +static int
> > +ice_switch_redirect(struct ice_adapter *ad,
> > +    struct rte_flow *flow,
> > +    struct ice_flow_redirect *rd)
> > +{
> > +struct ice_rule_query_data *rdata = flow->rule; struct
> > +ice_adv_fltr_mgmt_list_entry *list_itr; struct ice_adv_lkup_elem
> > +*lkups_dp = NULL; struct LIST_HEAD_TYPE *list_head; struct
> > +ice_adv_rule_info rinfo; struct ice_hw *hw = &ad->hw; struct
> > +ice_switch_info *sw; uint16_t lkups_cnt; int ret;
> > +
> > +sw = hw->switch_info;
> > +if (!sw->recp_list[rdata->rid].recp_created)
> > +return -EINVAL;
> > +
> > +if (rd->type != ICE_FLOW_REDIRECT_VSI) return -ENOTSUP;
> > +
> > +list_head = &sw->recp_list[rdata->rid].filt_rules;
> > +LIST_FOR_EACH_ENTRY(list_itr, list_head, ice_adv_fltr_mgmt_list_entry,
> > +    list_entry) {
> > +rinfo = list_itr->rule_info;
> > +if (rinfo.fltr_rule_id == rdata->rule_id &&
> > +    rinfo.sw_act.fltr_act == ICE_FWD_TO_VSI &&
> > +    rinfo.sw_act.vsi_handle == rd->vsi_handle) { lkups_cnt =
> > +list_itr->lkups_cnt; lkups_dp = (struct ice_adv_lkup_elem *)
> > +ice_memdup(hw, list_itr->lkups,
> > +   sizeof(*list_itr->lkups) *
> > +   lkups_cnt, ICE_NONDMA_TO_NONDMA);
> > +if (!lkups_dp) {
> > +PMD_DRV_LOG(ERR, "Failed to allocate memory."); return -EINVAL; }
> > +
> > +break;
> > +}
> > +}
> > +
> > +if (!lkups_dp)
> > +return 0;
> > +
> > +/* Remove the old rule */
> > +ret = ice_rem_adv_rule(hw, list_itr->lkups,
> > +       lkups_cnt, &rinfo);
> > +if (ret) {
> > +PMD_DRV_LOG(ERR, "Failed to delete the old rule %d",
> > +    rdata->rule_id);
> > +ret = -EINVAL;
> > +goto out;
> > +}
> > +
> > +/* Update VSI context */
> > +hw->vsi_ctx[rd->vsi_handle]->vsi_num = rd->new_vsi_num;
> > +
> > +/* Replay the rule */
> > +ret = ice_add_adv_rule(hw, lkups_dp, lkups_cnt,
> > +       &rinfo, rdata);
> > +if (ret) {
> > +PMD_DRV_LOG(ERR, "Failed to replay the rule"); ret = -EINVAL; goto
> > +out;
> 
> This 'goto out' can be removed.

Yes, will remove in next version. Thanks.

> 
> > +}
> > +
> > +out:
> > +ice_free(hw, lkups_dp);
> > +return ret;
> > +}
> > +
> >  static int
> >  ice_switch_init(struct ice_adapter *ad)  { @@ -1465,6 +1538,7 @@
> > ice_flow_engine ice_switch_engine = {  .create = ice_switch_create,
> > .destroy = ice_switch_destroy,  .query_count = ice_switch_query,
> > +.redirect = ice_switch_redirect,
> >  .free = ice_switch_filter_rule_free,
> >  .type = ICE_FLOW_ENGINE_SWITCH,
> >  };
> > --
> > 2.19.1
>