From patchwork Tue Jul 28 06:34:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ajit Khaparde X-Patchwork-Id: 74903 X-Patchwork-Delegate: ajit.khaparde@broadcom.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 35BDDA0521; Tue, 28 Jul 2020 08:35:35 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id B69EE1C113; Tue, 28 Jul 2020 08:35:14 +0200 (CEST) Received: from mail-wr1-f98.google.com (mail-wr1-f98.google.com [209.85.221.98]) by dpdk.org (Postfix) with ESMTP id 6F3B01C0D4 for ; Tue, 28 Jul 2020 08:34:56 +0200 (CEST) Received: by mail-wr1-f98.google.com with SMTP id f18so17098947wrs.0 for ; Mon, 27 Jul 2020 23:34:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=Ezz5kyK+ncR9csKqWKX/YsazdKUrm9sMjW5tGg+ACbg=; b=XGJB/UFII4DW52Q6ZU5K0GrCY5ZzsbCYOPaPF5xkFenwZyTXBeaXZtGEY2ivoSPm9n ESk6JJFjVrurrnAx6m7TNCoUbL+H4uy192ulvEOT7PccSBdovHKnFqHnyYb67v4gNRI8 VPvnd1pkUgfsN9As5/KTf8kU9VwCXeqAkXQfo= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Ezz5kyK+ncR9csKqWKX/YsazdKUrm9sMjW5tGg+ACbg=; b=Ho7/v7w2qLYnkVVl6RKmzppDMoxNPmbTIW0crN7hHuYOZftVp9v7sOfCWwFJrq9/sw FKU1s3XWozDeiR1zPxiUpGkyZIO/fVdPIaRwCRUOs2+fIupSZvGyfLIlzWU+FNmeZmFL V3sloefW9sc6KKq6mihdVaYECVO9OrAgQRdltsFyaEOI4cN/i7OkaNm3yWHTsh4mcYWM TWagC54uyVBFa5uvDrO6f6PLZwVWYte+nm+DKZe68VRFmUFXHSyhpCYGlcoY2qpk/Ofp i+y38QDyvO6gWdxpqMmZlgS8gG3Bj/uv46GtpOisurTKRFHPCZovAWa7b2DuGrlNhy0e AHuw== X-Gm-Message-State: AOAM532UYiQSPK7kdu/RsMFEEwAgnhqniz8ppDxip/dNQ1xxkit1/kGp lh1wDiG5N4KDl8Sv4PYnAXTJcQvBmPD4ZpaGQM9IpLgHDWXhp/hVQuy0B752rKucLtISsOCTS+a LBmREhVYHbgOVb+jaiFIlDxsGLp9yrFZp3UxDyoBORNfHBfXfxEUhDeHM7/kYacL40cT1WYIgqU aXqg== X-Google-Smtp-Source: ABdhPJz7g2Ks+Qsg1o+VUfxdZoMn2OHqL/385CFYPLFsUfa1Spfn7E30Il24jb53X2+j5mqIxemE6eT4Qoie X-Received: by 2002:a5d:4604:: with SMTP id t4mr23084739wrq.417.1595918095918; Mon, 27 Jul 2020 23:34:55 -0700 (PDT) Received: from localhost.localdomain ([192.19.223.252]) by smtp-relay.gmail.com with ESMTPS id r16sm30828wmh.29.2020.07.27.23.34.53 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 27 Jul 2020 23:34:55 -0700 (PDT) X-Relaying-Domain: broadcom.com From: Ajit Khaparde To: dev@dpdk.org Cc: ferruh.yigit@intel.com, Mike Baucom , Kishore Padmanabha Date: Mon, 27 Jul 2020 23:34:21 -0700 Message-Id: <20200728063439.23114-5-ajit.khaparde@broadcom.com> X-Mailer: git-send-email 2.21.1 (Apple Git-122.3) In-Reply-To: <20200728063439.23114-1-ajit.khaparde@broadcom.com> References: <20200728063439.23114-1-ajit.khaparde@broadcom.com> MIME-Version: 1.0 Subject: [dpdk-dev] [PATCH v4 04/22] net/bnxt: modify ulp mapper to use tcam search X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" From: Mike Baucom modified ulp mappper to use the new tf_search_tcam_entry API. When search before allocation is requested, mapper calls tc_search_tcam_entry with the alloc flag. - On HIT, the result and tcam index is returned. - On MISS, the tcam index is returned but the result is created and the tcam entry is set. - On REJECT, the flow request is rejected. Signed-off-by: Mike Baucom Reviewed-by: Kishore Padmanabha Reviewed-by: Ajit Khaparde --- drivers/net/bnxt/tf_ulp/ulp_mapper.c | 106 ++++++++++++++++++--------- 1 file changed, 71 insertions(+), 35 deletions(-) diff --git a/drivers/net/bnxt/tf_ulp/ulp_mapper.c b/drivers/net/bnxt/tf_ulp/ulp_mapper.c index 6a727ed34..2d3373df2 100644 --- a/drivers/net/bnxt/tf_ulp/ulp_mapper.c +++ b/drivers/net/bnxt/tf_ulp/ulp_mapper.c @@ -690,7 +690,7 @@ ulp_mapper_ident_extract(struct bnxt_ulp_mapper_parms *parms, { struct ulp_flow_db_res_params fid_parms; uint64_t id = 0; - uint32_t idx; + uint32_t idx = 0; struct tf_search_identifier_parms sparms = { 0 }; struct tf_free_identifier_parms free_parms = { 0 }; struct tf *tfp; @@ -1292,12 +1292,13 @@ ulp_mapper_tcam_tbl_process(struct bnxt_ulp_mapper_parms *parms, struct tf *tfp; int32_t rc, trc; struct tf_alloc_tcam_entry_parms aparms = { 0 }; + struct tf_search_tcam_entry_parms searchparms = { 0 }; struct tf_set_tcam_entry_parms sparms = { 0 }; struct ulp_flow_db_res_params fid_parms = { 0 }; struct tf_free_tcam_entry_parms free_parms = { 0 }; uint32_t hit = 0; uint16_t tmplen = 0; - struct ulp_blob res_blob; + uint16_t idx; /* Skip this if was handled by the cache. */ if (parms->tcam_tbl_opc == BNXT_ULP_MAPPER_TCAM_TBL_OPC_CACHE_SKIP) { @@ -1352,37 +1353,72 @@ ulp_mapper_tcam_tbl_process(struct bnxt_ulp_mapper_parms *parms, } } - aparms.dir = tbl->direction; - aparms.tcam_tbl_type = tbl->resource_type; - aparms.search_enable = tbl->srch_b4_alloc; - aparms.key_sz_in_bits = tbl->key_bit_size; - aparms.key = ulp_blob_data_get(&key, &tmplen); - if (tbl->key_bit_size != tmplen) { - BNXT_TF_DBG(ERR, "Key len (%d) != Expected (%d)\n", - tmplen, tbl->key_bit_size); - return -EINVAL; - } + if (!tbl->srch_b4_alloc) { + /* + * No search for re-use is requested, so simply allocate the + * tcam index. + */ + aparms.dir = tbl->direction; + aparms.tcam_tbl_type = tbl->resource_type; + aparms.search_enable = tbl->srch_b4_alloc; + aparms.key_sz_in_bits = tbl->key_bit_size; + aparms.key = ulp_blob_data_get(&key, &tmplen); + if (tbl->key_bit_size != tmplen) { + BNXT_TF_DBG(ERR, "Key len (%d) != Expected (%d)\n", + tmplen, tbl->key_bit_size); + return -EINVAL; + } - aparms.mask = ulp_blob_data_get(&mask, &tmplen); - if (tbl->key_bit_size != tmplen) { - BNXT_TF_DBG(ERR, "Mask len (%d) != Expected (%d)\n", - tmplen, tbl->key_bit_size); - return -EINVAL; - } + aparms.mask = ulp_blob_data_get(&mask, &tmplen); + if (tbl->key_bit_size != tmplen) { + BNXT_TF_DBG(ERR, "Mask len (%d) != Expected (%d)\n", + tmplen, tbl->key_bit_size); + return -EINVAL; + } - aparms.priority = tbl->priority; + aparms.priority = tbl->priority; - /* - * All failures after this succeeds require the entry to be freed. - * cannot return directly on failure, but needs to goto error - */ - rc = tf_alloc_tcam_entry(tfp, &aparms); - if (rc) { - BNXT_TF_DBG(ERR, "tcam alloc failed rc=%d.\n", rc); - return rc; - } + /* + * All failures after this succeeds require the entry to be + * freed. cannot return directly on failure, but needs to goto + * error. + */ + rc = tf_alloc_tcam_entry(tfp, &aparms); + if (rc) { + BNXT_TF_DBG(ERR, "tcam alloc failed rc=%d.\n", rc); + return rc; + } + idx = aparms.idx; + hit = aparms.hit; + } else { + /* + * Searching before allocation to see if we already have an + * entry. This allows re-use of a constrained resource. + */ + searchparms.dir = tbl->direction; + searchparms.tcam_tbl_type = tbl->resource_type; + searchparms.key = ulp_blob_data_get(&key, &tmplen); + searchparms.key_sz_in_bits = tbl->key_bit_size; + searchparms.mask = ulp_blob_data_get(&mask, &tmplen); + searchparms.priority = tbl->priority; + searchparms.alloc = 1; + searchparms.result = ulp_blob_data_get(&data, &tmplen); + searchparms.result_sz_in_bits = tbl->result_bit_size; + + rc = tf_search_tcam_entry(tfp, &searchparms); + if (rc) { + BNXT_TF_DBG(ERR, "tcam search failed rc=%d\n", rc); + return rc; + } - hit = aparms.hit; + /* Successful search, check the result */ + if (searchparms.search_status == REJECT) { + BNXT_TF_DBG(ERR, "tcam alloc rejected\n"); + return -ENOMEM; + } + idx = searchparms.idx; + hit = searchparms.hit; + } /* Build the result */ if (!tbl->srch_b4_alloc || !hit) { @@ -1430,9 +1466,9 @@ ulp_mapper_tcam_tbl_process(struct bnxt_ulp_mapper_parms *parms, } } - sparms.dir = aparms.dir; - sparms.tcam_tbl_type = aparms.tcam_tbl_type; - sparms.idx = aparms.idx; + sparms.dir = tbl->direction; + sparms.tcam_tbl_type = tbl->resource_type; + sparms.idx = idx; /* Already verified the key/mask lengths */ sparms.key = ulp_blob_data_get(&key, &tmplen); sparms.mask = ulp_blob_data_get(&mask, &tmplen); @@ -1464,7 +1500,7 @@ ulp_mapper_tcam_tbl_process(struct bnxt_ulp_mapper_parms *parms, rc = -EINVAL; goto error; } - parms->cache_ptr->tcam_idx = aparms.idx; + parms->cache_ptr->tcam_idx = idx; } /* Mark action */ @@ -1483,7 +1519,7 @@ ulp_mapper_tcam_tbl_process(struct bnxt_ulp_mapper_parms *parms, idents = ulp_mapper_ident_fields_get(tbl, &num_idents); for (i = 0; i < num_idents; i++) { rc = ulp_mapper_ident_extract(parms, tbl, - &idents[i], &res_blob); + &idents[i], &data); if (rc) { BNXT_TF_DBG(ERR, "Error in ident extraction\n"); @@ -1501,7 +1537,7 @@ ulp_mapper_tcam_tbl_process(struct bnxt_ulp_mapper_parms *parms, fid_parms.resource_func = tbl->resource_func; fid_parms.resource_type = tbl->resource_type; fid_parms.critical_resource = tbl->critical_resource; - fid_parms.resource_hndl = aparms.idx; + fid_parms.resource_hndl = idx; rc = ulp_flow_db_resource_add(parms->ulp_ctx, parms->tbl_idx, parms->fid,