From ba09f838464db72d5c6b6589f84f6a465e5594b1 Mon Sep 17 00:00:00 2001 From: Somnath Kotur Date: Mon, 8 Jan 2018 12:24:35 -0800 Subject: [PATCH] net/bnxt: fix duplicate pattern for 5tuple filter When user re-issues same 5 tuple filter pattern cmd with different destination queue, it would flag it as an existing match. However, when deletion on this filter was attempted, it would crash as the 'vnic' from which the filter was being removed from would be different. Fix by updating the filter in the scenario where there is a pattern match and only the destination queue varies. Fixes: b7435d660a8c ("net/bnxt: add ntuple filtering support") Cc: stable@dpdk.org Signed-off-by: Somnath Kotur Signed-off-by: Ajit Khaparde --- drivers/net/bnxt/bnxt_ethdev.c | 32 +++++++++++++++++++++++--------- 1 file changed, 23 insertions(+), 9 deletions(-) diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c index 049d98b1d8..41b23cc4f5 100644 --- a/drivers/net/bnxt/bnxt_ethdev.c +++ b/drivers/net/bnxt/bnxt_ethdev.c @@ -1962,7 +1962,8 @@ parse_ntuple_filter(struct bnxt *bp, static struct bnxt_filter_info* bnxt_match_ntuple_filter(struct bnxt *bp, - struct bnxt_filter_info *bfilter) + struct bnxt_filter_info *bfilter, + struct bnxt_vnic_info **mvnic) { struct bnxt_filter_info *mfilter = NULL; int i; @@ -1981,8 +1982,11 @@ bnxt_match_ntuple_filter(struct bnxt *bp, bfilter->dst_port == mfilter->dst_port && bfilter->dst_port_mask == mfilter->dst_port_mask && bfilter->flags == mfilter->flags && - bfilter->enables == mfilter->enables) + bfilter->enables == mfilter->enables) { + if (mvnic) + *mvnic = vnic; return mfilter; + } } } return NULL; @@ -1994,7 +1998,7 @@ bnxt_cfg_ntuple_filter(struct bnxt *bp, enum rte_filter_op filter_op) { struct bnxt_filter_info *bfilter, *mfilter, *filter1; - struct bnxt_vnic_info *vnic, *vnic0; + struct bnxt_vnic_info *vnic, *vnic0, *mvnic; int ret; if (nfilter->flags != RTE_5TUPLE_FLAGS) { @@ -2032,12 +2036,22 @@ bnxt_cfg_ntuple_filter(struct bnxt *bp, bfilter->ethertype = 0x800; bfilter->enables |= NTUPLE_FLTR_ALLOC_INPUT_EN_ETHERTYPE; - mfilter = bnxt_match_ntuple_filter(bp, bfilter); + mfilter = bnxt_match_ntuple_filter(bp, bfilter, &mvnic); - if (mfilter != NULL && filter_op == RTE_ETH_FILTER_ADD) { - RTE_LOG(ERR, PMD, "filter exists."); + if (mfilter != NULL && filter_op == RTE_ETH_FILTER_ADD && + bfilter->dst_id == mfilter->dst_id) { + RTE_LOG(ERR, PMD, "filter exists.\n"); ret = -EEXIST; goto free_filter; + } else if (mfilter != NULL && filter_op == RTE_ETH_FILTER_ADD && + bfilter->dst_id != mfilter->dst_id) { + mfilter->dst_id = vnic->fw_vnic_id; + ret = bnxt_hwrm_set_ntuple_filter(bp, mfilter->dst_id, mfilter); + STAILQ_REMOVE(&mvnic->filter, mfilter, bnxt_filter_info, next); + STAILQ_INSERT_TAIL(&vnic->filter, mfilter, next); + RTE_LOG(ERR, PMD, "filter with matching pattern exists.\n"); + RTE_LOG(ERR, PMD, " Updated it to the new destination queue\n"); + goto free_filter; } if (mfilter == NULL && filter_op == RTE_ETH_FILTER_DELETE) { RTE_LOG(ERR, PMD, "filter doesn't exist."); @@ -2059,11 +2073,11 @@ bnxt_cfg_ntuple_filter(struct bnxt *bp, } ret = bnxt_hwrm_clear_ntuple_filter(bp, mfilter); - STAILQ_REMOVE(&vnic->filter, mfilter, bnxt_filter_info, - next); + STAILQ_REMOVE(&vnic->filter, mfilter, bnxt_filter_info, next); bnxt_free_filter(bp, mfilter); - bfilter->fw_l2_filter_id = -1; + mfilter->fw_l2_filter_id = -1; bnxt_free_filter(bp, bfilter); + bfilter->fw_l2_filter_id = -1; } return 0; -- 2.20.1