From e339ef6e357c97c512a37fbba13859878a496636 Mon Sep 17 00:00:00 2001 From: Somnath Kotur Date: Fri, 20 Dec 2019 18:29:39 -0800 Subject: [PATCH] net/bnxt: fix flow flush to sync with flow destroy Sync flow flush routine with flow destroy so that the operations performed per flow during a flush are the same as that are done for an individual flow destroy by having a common function to call for both. One of the things that was missed in the flow flush routine was the deletion of the L2 filter that would have been created as part of an n-tuple filter. Also, decrement the l2_ref_cnt for a filter in the case of a filter update as it would've bumped up previously in validate_and_parse_flow() Fixes: 89278c59d97c ("net/bnxt: fix flow flush handling") Cc: stable@dpdk.org Signed-off-by: Somnath Kotur Reviewed-by: Santoshkumar Karanappa Rastapur --- drivers/net/bnxt/bnxt_flow.c | 132 ++++++++++++----------------------- 1 file changed, 46 insertions(+), 86 deletions(-) diff --git a/drivers/net/bnxt/bnxt_flow.c b/drivers/net/bnxt/bnxt_flow.c index 7bd6811f16..7343b7e7b4 100644 --- a/drivers/net/bnxt/bnxt_flow.c +++ b/drivers/net/bnxt/bnxt_flow.c @@ -1536,10 +1536,13 @@ bnxt_update_filter(struct bnxt *bp, struct bnxt_filter_info *old_filter, * filter which points to the new destination queue and so we clear * the previous L2 filter. For ntuple filters, we are going to reuse * the old L2 filter and create new NTUPLE filter with this new - * destination queue subsequently during bnxt_flow_create. + * destination queue subsequently during bnxt_flow_create. So we + * decrement the ref cnt of the L2 filter that would've been bumped + * up previously in bnxt_validate_and_parse_flow as the old n-tuple + * filter that was referencing it will be deleted now. */ + bnxt_hwrm_clear_l2_filter(bp, old_filter); if (new_filter->filter_type == HWRM_CFA_L2_FILTER) { - bnxt_hwrm_clear_l2_filter(bp, old_filter); bnxt_hwrm_set_l2_filter(bp, new_filter->dst_id, new_filter); } else { if (new_filter->filter_type == HWRM_CFA_EM_FILTER) @@ -1816,46 +1819,24 @@ static int bnxt_handle_tunnel_redirect_destroy(struct bnxt *bp, } static int -bnxt_flow_destroy(struct rte_eth_dev *dev, - struct rte_flow *flow, - struct rte_flow_error *error) +_bnxt_flow_destroy(struct bnxt *bp, + struct rte_flow *flow, + struct rte_flow_error *error) { - struct bnxt *bp = dev->data->dev_private; struct bnxt_filter_info *filter; struct bnxt_vnic_info *vnic; int ret = 0; - bnxt_acquire_flow_lock(bp); - if (!flow) { - rte_flow_error_set(error, EINVAL, - RTE_FLOW_ERROR_TYPE_HANDLE, NULL, - "Invalid flow: failed to destroy flow."); - bnxt_release_flow_lock(bp); - return -EINVAL; - } - filter = flow->filter; vnic = flow->vnic; - if (!filter) { - rte_flow_error_set(error, EINVAL, - RTE_FLOW_ERROR_TYPE_HANDLE, NULL, - "Invalid flow: failed to destroy flow."); - bnxt_release_flow_lock(bp); - return -EINVAL; - } - if (filter->filter_type == HWRM_CFA_TUNNEL_REDIRECT_FILTER && filter->enables == filter->tunnel_type) { - ret = bnxt_handle_tunnel_redirect_destroy(bp, - filter, - error); - if (!ret) { + ret = bnxt_handle_tunnel_redirect_destroy(bp, filter, error); + if (!ret) goto done; - } else { - bnxt_release_flow_lock(bp); + else return ret; - } } ret = bnxt_match_filter(bp, filter); @@ -1902,7 +1883,36 @@ done: "Failed to destroy flow."); } + return ret; +} + +static int +bnxt_flow_destroy(struct rte_eth_dev *dev, + struct rte_flow *flow, + struct rte_flow_error *error) +{ + struct bnxt *bp = dev->data->dev_private; + int ret = 0; + + bnxt_acquire_flow_lock(bp); + if (!flow) { + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_HANDLE, NULL, + "Invalid flow: failed to destroy flow."); + bnxt_release_flow_lock(bp); + return -EINVAL; + } + + if (!flow->filter) { + rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_HANDLE, NULL, + "Invalid flow: failed to destroy flow."); + bnxt_release_flow_lock(bp); + return -EINVAL; + } + ret = _bnxt_flow_destroy(bp, flow, error); bnxt_release_flow_lock(bp); + return ret; } @@ -1910,7 +1920,6 @@ static int bnxt_flow_flush(struct rte_eth_dev *dev, struct rte_flow_error *error) { struct bnxt *bp = dev->data->dev_private; - struct bnxt_filter_info *filter = NULL; struct bnxt_vnic_info *vnic; struct rte_flow *flow; unsigned int i; @@ -1924,66 +1933,17 @@ bnxt_flow_flush(struct rte_eth_dev *dev, struct rte_flow_error *error) while (!STAILQ_EMPTY(&vnic->flow_list)) { flow = STAILQ_FIRST(&vnic->flow_list); - filter = flow->filter; - - if (filter->filter_type == - HWRM_CFA_TUNNEL_REDIRECT_FILTER && - filter->enables == filter->tunnel_type) { - ret = - bnxt_handle_tunnel_redirect_destroy(bp, - filter, - error); - if (!ret) { - goto done; - } else { - bnxt_release_flow_lock(bp); - return ret; - } - } - - if (filter->filter_type == HWRM_CFA_EM_FILTER) - ret = bnxt_hwrm_clear_em_filter(bp, filter); - if (filter->filter_type == HWRM_CFA_NTUPLE_FILTER) - ret = bnxt_hwrm_clear_ntuple_filter(bp, filter); - else if (i) - ret = bnxt_hwrm_clear_l2_filter(bp, filter); - - if (ret) { - rte_flow_error_set - (error, - -ret, - RTE_FLOW_ERROR_TYPE_HANDLE, - NULL, - "Failed to flush flow in HW."); - bnxt_release_flow_lock(bp); - return -rte_errno; - } -done: - STAILQ_REMOVE(&vnic->flow_list, flow, - rte_flow, next); - - STAILQ_REMOVE(&vnic->filter, - filter, - bnxt_filter_info, - next); - bnxt_free_filter(bp, filter); - rte_free(flow); + if (!flow->filter) + continue; - /* If this was the last flow associated with this vnic, - * switch the queue back to RSS pool. - */ - if (STAILQ_EMPTY(&vnic->flow_list)) { - rte_free(vnic->fw_grp_ids); - if (vnic->rx_queue_cnt > 1) - bnxt_hwrm_vnic_ctx_free(bp, vnic); - bnxt_hwrm_vnic_free(bp, vnic); - vnic->rx_queue_cnt = 0; - } + ret = _bnxt_flow_destroy(bp, flow, error); + if (ret) + break; } } - bnxt_release_flow_lock(bp); + return ret; } -- 2.20.1