From patchwork Wed Aug 14 17:33:01 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Nguyen X-Patchwork-Id: 13763779 X-Patchwork-Delegate: kuba@kernel.org Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E49D31BD029 for ; Wed, 14 Aug 2024 17:33:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.21 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723656810; cv=none; b=eJLtu1VCYqEOqKfpVab+qxV7rIPFJzr5Yv8P2xrJKGGdyaqFCj1Twx10GFuGjgFFcAHEowOSQB40VKB/TefUKLiM4fdX1j8m5WlN6E8E47yGnDp9W4+6CM6Vokc2FWLhwlkOlWD74nTZ4/I7QalwZG4ck43n/aOMi8lBKLGRlYI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723656810; c=relaxed/simple; bh=7LC/IGYzAC7MY5gtUr81Ppq3WllGwFWuk9VtiJ9hDcI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=WBFBrLhfRPh1rQmxTdwQ+smAj3cZ+wUthJLAQt4kV0Hz/2FzBA1Y6+ZkxsB+1OYfY6wANz05ZQjqWIkJAZ8kU5qvy4PwAT2IYg/R2Q6jQV2YFkDDYIEwi5j2kMF+nhQs54E7kXkHrGSuRhGXjxc3b7l1M9ZbvzlfUHSj/4AFjTo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=K/FKxu3z; arc=none smtp.client-ip=198.175.65.21 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="K/FKxu3z" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1723656808; x=1755192808; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=7LC/IGYzAC7MY5gtUr81Ppq3WllGwFWuk9VtiJ9hDcI=; b=K/FKxu3zIDrZ/jC+nIsqdL2+Ri1b+DWYymsTCVp0nor5fZRIHEgxhnAx f7ge+QO2nKLbA2l3MnrgN327J0H8AgiqPejL/UQNr/5+EHdP43D1QrVU9 bKtPkh95GvWWdask3Sq2xcStIsTUuWo4vPwrdwdZVLsqVJZ9E8XGlRyLF Off3R8E5lr+QLfb2fEx8QckvBDXtpPR33RpI8zOpQ+q2yfFN2D6fBmABo RFs/+63D9ZveWkewuyL/TJx4F13C1QDP+BE5BUbhYeZYGosuS67alLNmb 9/vAvOnvuwBuB98pOYX5d58okpH3kiedKOV1ePGdsEBsul4hvDEAbi8J5 g==; X-CSE-ConnectionGUID: rJ0MiiNxRNqWDsA7IpXpxw== X-CSE-MsgGUID: ogS4WeNLT4ScclfkAr9zIg== X-IronPort-AV: E=McAfee;i="6700,10204,11164"; a="21860579" X-IronPort-AV: E=Sophos;i="6.10,146,1719903600"; d="scan'208";a="21860579" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Aug 2024 10:33:25 -0700 X-CSE-ConnectionGUID: oXc1xsh0R9OtVjCK3Oaijw== X-CSE-MsgGUID: w4+52+/ORQag2BK3prLcvQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,146,1719903600"; d="scan'208";a="59233868" Received: from anguy11-upstream.jf.intel.com ([10.166.9.133]) by fmviesa010.fm.intel.com with ESMTP; 14 Aug 2024 10:33:24 -0700 From: Tony Nguyen To: davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com, edumazet@google.com, netdev@vger.kernel.org Cc: Alexander Lobakin , anthony.l.nguyen@intel.com, przemyslaw.kitszel@intel.com, joshua.a.hay@intel.com, michal.kubiak@intel.com, nex.sw.ncis.osdt.itp.upstreaming@intel.com Subject: [PATCH net-next 4/9] idpf: convert to libie Tx buffer completion Date: Wed, 14 Aug 2024 10:33:01 -0700 Message-ID: <20240814173309.4166149-5-anthony.l.nguyen@intel.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20240814173309.4166149-1-anthony.l.nguyen@intel.com> References: <20240814173309.4166149-1-anthony.l.nguyen@intel.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org From: Alexander Lobakin &idpf_tx_buffer is almost identical to the previous generations, as well as the way it's handled. Moreover, relying on dma_unmap_addr() and !!buf->skb instead of explicit defining of buffer's type was never good. Use the newly added libeth helpers to do it properly and reduce the copy-paste around the Tx code. Reviewed-by: Przemek Kitszel Signed-off-by: Alexander Lobakin Signed-off-by: Tony Nguyen --- .../ethernet/intel/idpf/idpf_singleq_txrx.c | 82 +++----- drivers/net/ethernet/intel/idpf/idpf_txrx.c | 195 ++++++------------ drivers/net/ethernet/intel/idpf/idpf_txrx.h | 50 +---- 3 files changed, 101 insertions(+), 226 deletions(-) diff --git a/drivers/net/ethernet/intel/idpf/idpf_singleq_txrx.c b/drivers/net/ethernet/intel/idpf/idpf_singleq_txrx.c index fe64febf7436..98f26a4b835f 100644 --- a/drivers/net/ethernet/intel/idpf/idpf_singleq_txrx.c +++ b/drivers/net/ethernet/intel/idpf/idpf_singleq_txrx.c @@ -2,6 +2,7 @@ /* Copyright (C) 2023 Intel Corporation */ #include +#include #include "idpf.h" @@ -224,6 +225,7 @@ static void idpf_tx_singleq_map(struct idpf_tx_queue *tx_q, /* record length, and DMA address */ dma_unmap_len_set(tx_buf, len, size); dma_unmap_addr_set(tx_buf, dma, dma); + tx_buf->type = LIBETH_SQE_FRAG; /* align size to end of page */ max_data += -dma & (IDPF_TX_MAX_READ_REQ_SIZE - 1); @@ -245,6 +247,8 @@ static void idpf_tx_singleq_map(struct idpf_tx_queue *tx_q, i = 0; } + tx_q->tx_buf[i].type = LIBETH_SQE_EMPTY; + dma += max_data; size -= max_data; @@ -282,13 +286,13 @@ static void idpf_tx_singleq_map(struct idpf_tx_queue *tx_q, tx_desc->qw1 = idpf_tx_singleq_build_ctob(td_cmd, offsets, size, td_tag); - IDPF_SINGLEQ_BUMP_RING_IDX(tx_q, i); + first->type = LIBETH_SQE_SKB; + first->rs_idx = i; - /* set next_to_watch value indicating a packet is present */ - first->next_to_watch = tx_desc; + IDPF_SINGLEQ_BUMP_RING_IDX(tx_q, i); nq = netdev_get_tx_queue(tx_q->netdev, tx_q->idx); - netdev_tx_sent_queue(nq, first->bytecount); + netdev_tx_sent_queue(nq, first->bytes); idpf_tx_buf_hw_update(tx_q, i, netdev_xmit_more()); } @@ -306,8 +310,7 @@ idpf_tx_singleq_get_ctx_desc(struct idpf_tx_queue *txq) struct idpf_base_tx_ctx_desc *ctx_desc; int ntu = txq->next_to_use; - memset(&txq->tx_buf[ntu], 0, sizeof(struct idpf_tx_buf)); - txq->tx_buf[ntu].ctx_entry = true; + txq->tx_buf[ntu].type = LIBETH_SQE_CTX; ctx_desc = &txq->base_ctx[ntu]; @@ -396,11 +399,11 @@ netdev_tx_t idpf_tx_singleq_frame(struct sk_buff *skb, first->skb = skb; if (tso) { - first->gso_segs = offload.tso_segs; - first->bytecount = skb->len + ((first->gso_segs - 1) * offload.tso_hdr_len); + first->packets = offload.tso_segs; + first->bytes = skb->len + ((first->packets - 1) * offload.tso_hdr_len); } else { - first->bytecount = max_t(unsigned int, skb->len, ETH_ZLEN); - first->gso_segs = 1; + first->bytes = max_t(unsigned int, skb->len, ETH_ZLEN); + first->packets = 1; } idpf_tx_singleq_map(tx_q, first, &offload); @@ -420,10 +423,15 @@ netdev_tx_t idpf_tx_singleq_frame(struct sk_buff *skb, static bool idpf_tx_singleq_clean(struct idpf_tx_queue *tx_q, int napi_budget, int *cleaned) { - unsigned int total_bytes = 0, total_pkts = 0; + struct libeth_sq_napi_stats ss = { }; struct idpf_base_tx_desc *tx_desc; u32 budget = tx_q->clean_budget; s16 ntc = tx_q->next_to_clean; + struct libeth_cq_pp cp = { + .dev = tx_q->dev, + .ss = &ss, + .napi = napi_budget, + }; struct idpf_netdev_priv *np; struct idpf_tx_buf *tx_buf; struct netdev_queue *nq; @@ -441,47 +449,23 @@ static bool idpf_tx_singleq_clean(struct idpf_tx_queue *tx_q, int napi_budget, * such. We can skip this descriptor since there is no buffer * to clean. */ - if (tx_buf->ctx_entry) { - /* Clear this flag here to avoid stale flag values when - * this buffer is used for actual data in the future. - * There are cases where the tx_buf struct / the flags - * field will not be cleared before being reused. - */ - tx_buf->ctx_entry = false; + if (unlikely(tx_buf->type <= LIBETH_SQE_CTX)) { + tx_buf->type = LIBETH_SQE_EMPTY; goto fetch_next_txq_desc; } - /* if next_to_watch is not set then no work pending */ - eop_desc = (struct idpf_base_tx_desc *)tx_buf->next_to_watch; - if (!eop_desc) - break; - - /* prevent any other reads prior to eop_desc */ + /* prevent any other reads prior to type */ smp_rmb(); + eop_desc = &tx_q->base_tx[tx_buf->rs_idx]; + /* if the descriptor isn't done, no work yet to do */ if (!(eop_desc->qw1 & cpu_to_le64(IDPF_TX_DESC_DTYPE_DESC_DONE))) break; - /* clear next_to_watch to prevent false hangs */ - tx_buf->next_to_watch = NULL; - /* update the statistics for this packet */ - total_bytes += tx_buf->bytecount; - total_pkts += tx_buf->gso_segs; - - napi_consume_skb(tx_buf->skb, napi_budget); - - /* unmap skb header data */ - dma_unmap_single(tx_q->dev, - dma_unmap_addr(tx_buf, dma), - dma_unmap_len(tx_buf, len), - DMA_TO_DEVICE); - - /* clear tx_buf data */ - tx_buf->skb = NULL; - dma_unmap_len_set(tx_buf, len, 0); + libeth_tx_complete(tx_buf, &cp); /* unmap remaining buffers */ while (tx_desc != eop_desc) { @@ -495,13 +479,7 @@ static bool idpf_tx_singleq_clean(struct idpf_tx_queue *tx_q, int napi_budget, } /* unmap any remaining paged data */ - if (dma_unmap_len(tx_buf, len)) { - dma_unmap_page(tx_q->dev, - dma_unmap_addr(tx_buf, dma), - dma_unmap_len(tx_buf, len), - DMA_TO_DEVICE); - dma_unmap_len_set(tx_buf, len, 0); - } + libeth_tx_complete(tx_buf, &cp); } /* update budget only if we did something */ @@ -521,11 +499,11 @@ static bool idpf_tx_singleq_clean(struct idpf_tx_queue *tx_q, int napi_budget, ntc += tx_q->desc_count; tx_q->next_to_clean = ntc; - *cleaned += total_pkts; + *cleaned += ss.packets; u64_stats_update_begin(&tx_q->stats_sync); - u64_stats_add(&tx_q->q_stats.packets, total_pkts); - u64_stats_add(&tx_q->q_stats.bytes, total_bytes); + u64_stats_add(&tx_q->q_stats.packets, ss.packets); + u64_stats_add(&tx_q->q_stats.bytes, ss.bytes); u64_stats_update_end(&tx_q->stats_sync); np = netdev_priv(tx_q->netdev); @@ -533,7 +511,7 @@ static bool idpf_tx_singleq_clean(struct idpf_tx_queue *tx_q, int napi_budget, dont_wake = np->state != __IDPF_VPORT_UP || !netif_carrier_ok(tx_q->netdev); - __netif_txq_completed_wake(nq, total_pkts, total_bytes, + __netif_txq_completed_wake(nq, ss.packets, ss.bytes, IDPF_DESC_UNUSED(tx_q), IDPF_TX_WAKE_THRESH, dont_wake); diff --git a/drivers/net/ethernet/intel/idpf/idpf_txrx.c b/drivers/net/ethernet/intel/idpf/idpf_txrx.c index 585c3dadd9bf..de35736143de 100644 --- a/drivers/net/ethernet/intel/idpf/idpf_txrx.c +++ b/drivers/net/ethernet/intel/idpf/idpf_txrx.c @@ -2,10 +2,19 @@ /* Copyright (C) 2023 Intel Corporation */ #include +#include #include "idpf.h" #include "idpf_virtchnl.h" +struct idpf_tx_stash { + struct hlist_node hlist; + struct libeth_sqe buf; +}; + +#define idpf_tx_buf_compl_tag(buf) (*(int *)&(buf)->priv) +LIBETH_SQE_CHECK_PRIV(int); + static bool idpf_chk_linearize(struct sk_buff *skb, unsigned int max_bufs, unsigned int count); @@ -60,41 +69,18 @@ void idpf_tx_timeout(struct net_device *netdev, unsigned int txqueue) } } -/** - * idpf_tx_buf_rel - Release a Tx buffer - * @tx_q: the queue that owns the buffer - * @tx_buf: the buffer to free - */ -static void idpf_tx_buf_rel(struct idpf_tx_queue *tx_q, - struct idpf_tx_buf *tx_buf) -{ - if (tx_buf->skb) { - if (dma_unmap_len(tx_buf, len)) - dma_unmap_single(tx_q->dev, - dma_unmap_addr(tx_buf, dma), - dma_unmap_len(tx_buf, len), - DMA_TO_DEVICE); - dev_kfree_skb_any(tx_buf->skb); - } else if (dma_unmap_len(tx_buf, len)) { - dma_unmap_page(tx_q->dev, - dma_unmap_addr(tx_buf, dma), - dma_unmap_len(tx_buf, len), - DMA_TO_DEVICE); - } - - tx_buf->next_to_watch = NULL; - tx_buf->skb = NULL; - tx_buf->compl_tag = IDPF_SPLITQ_TX_INVAL_COMPL_TAG; - dma_unmap_len_set(tx_buf, len, 0); -} - /** * idpf_tx_buf_rel_all - Free any empty Tx buffers * @txq: queue to be cleaned */ static void idpf_tx_buf_rel_all(struct idpf_tx_queue *txq) { + struct libeth_sq_napi_stats ss = { }; struct idpf_buf_lifo *buf_stack; + struct libeth_cq_pp cp = { + .dev = txq->dev, + .ss = &ss, + }; u16 i; /* Buffers already cleared, nothing to do */ @@ -103,7 +89,7 @@ static void idpf_tx_buf_rel_all(struct idpf_tx_queue *txq) /* Free all the Tx buffer sk_buffs */ for (i = 0; i < txq->desc_count; i++) - idpf_tx_buf_rel(txq, &txq->tx_buf[i]); + libeth_tx_complete(&txq->tx_buf[i], &cp); kfree(txq->tx_buf); txq->tx_buf = NULL; @@ -203,10 +189,6 @@ static int idpf_tx_buf_alloc_all(struct idpf_tx_queue *tx_q) if (!tx_q->tx_buf) return -ENOMEM; - /* Initialize tx_bufs with invalid completion tags */ - for (i = 0; i < tx_q->desc_count; i++) - tx_q->tx_buf[i].compl_tag = IDPF_SPLITQ_TX_INVAL_COMPL_TAG; - if (!idpf_queue_has(FLOW_SCH_EN, tx_q)) return 0; @@ -1655,37 +1637,6 @@ static void idpf_tx_handle_sw_marker(struct idpf_tx_queue *tx_q) wake_up(&vport->sw_marker_wq); } -/** - * idpf_tx_splitq_clean_hdr - Clean TX buffer resources for header portion of - * packet - * @tx_q: tx queue to clean buffer from - * @tx_buf: buffer to be cleaned - * @cleaned: pointer to stats struct to track cleaned packets/bytes - * @napi_budget: Used to determine if we are in netpoll - */ -static void idpf_tx_splitq_clean_hdr(struct idpf_tx_queue *tx_q, - struct idpf_tx_buf *tx_buf, - struct idpf_cleaned_stats *cleaned, - int napi_budget) -{ - napi_consume_skb(tx_buf->skb, napi_budget); - - if (dma_unmap_len(tx_buf, len)) { - dma_unmap_single(tx_q->dev, - dma_unmap_addr(tx_buf, dma), - dma_unmap_len(tx_buf, len), - DMA_TO_DEVICE); - - dma_unmap_len_set(tx_buf, len, 0); - } - - /* clear tx_buf data */ - tx_buf->skb = NULL; - - cleaned->bytes += tx_buf->bytecount; - cleaned->packets += tx_buf->gso_segs; -} - /** * idpf_tx_clean_stashed_bufs - clean bufs that were stored for * out of order completions @@ -1701,23 +1652,20 @@ static void idpf_tx_clean_stashed_bufs(struct idpf_tx_queue *txq, { struct idpf_tx_stash *stash; struct hlist_node *tmp_buf; + struct libeth_cq_pp cp = { + .dev = txq->dev, + .ss = cleaned, + .napi = budget, + }; /* Buffer completion */ hash_for_each_possible_safe(txq->stash->sched_buf_hash, stash, tmp_buf, hlist, compl_tag) { - if (unlikely(stash->buf.compl_tag != (int)compl_tag)) + if (unlikely(idpf_tx_buf_compl_tag(&stash->buf) != + (int)compl_tag)) continue; - if (stash->buf.skb) { - idpf_tx_splitq_clean_hdr(txq, &stash->buf, cleaned, - budget); - } else if (dma_unmap_len(&stash->buf, len)) { - dma_unmap_page(txq->dev, - dma_unmap_addr(&stash->buf, dma), - dma_unmap_len(&stash->buf, len), - DMA_TO_DEVICE); - dma_unmap_len_set(&stash->buf, len, 0); - } + libeth_tx_complete(&stash->buf, &cp); /* Push shadow buf back onto stack */ idpf_buf_lifo_push(&txq->stash->buf_stack, stash); @@ -1737,8 +1685,7 @@ static int idpf_stash_flow_sch_buffers(struct idpf_tx_queue *txq, { struct idpf_tx_stash *stash; - if (unlikely(!dma_unmap_addr(tx_buf, dma) && - !dma_unmap_len(tx_buf, len))) + if (unlikely(tx_buf->type <= LIBETH_SQE_CTX)) return 0; stash = idpf_buf_lifo_pop(&txq->stash->buf_stack); @@ -1751,20 +1698,18 @@ static int idpf_stash_flow_sch_buffers(struct idpf_tx_queue *txq, /* Store buffer params in shadow buffer */ stash->buf.skb = tx_buf->skb; - stash->buf.bytecount = tx_buf->bytecount; - stash->buf.gso_segs = tx_buf->gso_segs; + stash->buf.bytes = tx_buf->bytes; + stash->buf.packets = tx_buf->packets; + stash->buf.type = tx_buf->type; dma_unmap_addr_set(&stash->buf, dma, dma_unmap_addr(tx_buf, dma)); dma_unmap_len_set(&stash->buf, len, dma_unmap_len(tx_buf, len)); - stash->buf.compl_tag = tx_buf->compl_tag; + idpf_tx_buf_compl_tag(&stash->buf) = idpf_tx_buf_compl_tag(tx_buf); /* Add buffer to buf_hash table to be freed later */ hash_add(txq->stash->sched_buf_hash, &stash->hlist, - stash->buf.compl_tag); - - memset(tx_buf, 0, sizeof(struct idpf_tx_buf)); + idpf_tx_buf_compl_tag(&stash->buf)); - /* Reinitialize buf_id portion of tag */ - tx_buf->compl_tag = IDPF_SPLITQ_TX_INVAL_COMPL_TAG; + tx_buf->type = LIBETH_SQE_EMPTY; return 0; } @@ -1806,6 +1751,11 @@ static void idpf_tx_splitq_clean(struct idpf_tx_queue *tx_q, u16 end, union idpf_tx_flex_desc *next_pending_desc = NULL; union idpf_tx_flex_desc *tx_desc; s16 ntc = tx_q->next_to_clean; + struct libeth_cq_pp cp = { + .dev = tx_q->dev, + .ss = cleaned, + .napi = napi_budget, + }; struct idpf_tx_buf *tx_buf; tx_desc = &tx_q->flex_tx[ntc]; @@ -1821,13 +1771,10 @@ static void idpf_tx_splitq_clean(struct idpf_tx_queue *tx_q, u16 end, * invalid completion tag since no buffer was used. We can * skip this descriptor since there is no buffer to clean. */ - if (unlikely(tx_buf->compl_tag == IDPF_SPLITQ_TX_INVAL_COMPL_TAG)) + if (tx_buf->type <= LIBETH_SQE_CTX) goto fetch_next_txq_desc; - eop_desc = (union idpf_tx_flex_desc *)tx_buf->next_to_watch; - - /* clear next_to_watch to prevent false hangs */ - tx_buf->next_to_watch = NULL; + eop_desc = &tx_q->flex_tx[tx_buf->rs_idx]; if (descs_only) { if (idpf_stash_flow_sch_buffers(tx_q, tx_buf)) @@ -1844,8 +1791,7 @@ static void idpf_tx_splitq_clean(struct idpf_tx_queue *tx_q, u16 end, } } } else { - idpf_tx_splitq_clean_hdr(tx_q, tx_buf, cleaned, - napi_budget); + libeth_tx_complete(tx_buf, &cp); /* unmap remaining buffers */ while (tx_desc != eop_desc) { @@ -1853,13 +1799,7 @@ static void idpf_tx_splitq_clean(struct idpf_tx_queue *tx_q, u16 end, tx_desc, tx_buf); /* unmap any remaining paged data */ - if (dma_unmap_len(tx_buf, len)) { - dma_unmap_page(tx_q->dev, - dma_unmap_addr(tx_buf, dma), - dma_unmap_len(tx_buf, len), - DMA_TO_DEVICE); - dma_unmap_len_set(tx_buf, len, 0); - } + libeth_tx_complete(tx_buf, &cp); } } @@ -1901,24 +1841,20 @@ static bool idpf_tx_clean_buf_ring(struct idpf_tx_queue *txq, u16 compl_tag, u16 idx = compl_tag & txq->compl_tag_bufid_m; struct idpf_tx_buf *tx_buf = NULL; u16 ntc = txq->next_to_clean; + struct libeth_cq_pp cp = { + .dev = txq->dev, + .ss = cleaned, + .napi = budget, + }; u16 num_descs_cleaned = 0; u16 orig_idx = idx; tx_buf = &txq->tx_buf[idx]; + if (unlikely(tx_buf->type <= LIBETH_SQE_CTX)) + return false; - while (tx_buf->compl_tag == (int)compl_tag) { - if (tx_buf->skb) { - idpf_tx_splitq_clean_hdr(txq, tx_buf, cleaned, budget); - } else if (dma_unmap_len(tx_buf, len)) { - dma_unmap_page(txq->dev, - dma_unmap_addr(tx_buf, dma), - dma_unmap_len(tx_buf, len), - DMA_TO_DEVICE); - dma_unmap_len_set(tx_buf, len, 0); - } - - memset(tx_buf, 0, sizeof(struct idpf_tx_buf)); - tx_buf->compl_tag = IDPF_SPLITQ_TX_INVAL_COMPL_TAG; + while (idpf_tx_buf_compl_tag(tx_buf) == (int)compl_tag) { + libeth_tx_complete(tx_buf, &cp); num_descs_cleaned++; idpf_tx_clean_buf_ring_bump_ntc(txq, idx, tx_buf); @@ -2307,6 +2243,12 @@ unsigned int idpf_tx_desc_count_required(struct idpf_tx_queue *txq, void idpf_tx_dma_map_error(struct idpf_tx_queue *txq, struct sk_buff *skb, struct idpf_tx_buf *first, u16 idx) { + struct libeth_sq_napi_stats ss = { }; + struct libeth_cq_pp cp = { + .dev = txq->dev, + .ss = &ss, + }; + u64_stats_update_begin(&txq->stats_sync); u64_stats_inc(&txq->q_stats.dma_map_errs); u64_stats_update_end(&txq->stats_sync); @@ -2316,7 +2258,7 @@ void idpf_tx_dma_map_error(struct idpf_tx_queue *txq, struct sk_buff *skb, struct idpf_tx_buf *tx_buf; tx_buf = &txq->tx_buf[idx]; - idpf_tx_buf_rel(txq, tx_buf); + libeth_tx_complete(tx_buf, &cp); if (tx_buf == first) break; if (idx == 0) @@ -2405,7 +2347,8 @@ static void idpf_tx_splitq_map(struct idpf_tx_queue *tx_q, if (dma_mapping_error(tx_q->dev, dma)) return idpf_tx_dma_map_error(tx_q, skb, first, i); - tx_buf->compl_tag = params->compl_tag; + idpf_tx_buf_compl_tag(tx_buf) = params->compl_tag; + tx_buf->type = LIBETH_SQE_FRAG; /* record length, and DMA address */ dma_unmap_len_set(tx_buf, len, size); @@ -2479,8 +2422,7 @@ static void idpf_tx_splitq_map(struct idpf_tx_queue *tx_q, * simply pass over these holes and finish cleaning the * rest of the packet. */ - memset(&tx_q->tx_buf[i], 0, sizeof(struct idpf_tx_buf)); - tx_q->tx_buf[i].compl_tag = params->compl_tag; + tx_q->tx_buf[i].type = LIBETH_SQE_EMPTY; /* Adjust the DMA offset and the remaining size of the * fragment. On the first iteration of this loop, @@ -2525,19 +2467,19 @@ static void idpf_tx_splitq_map(struct idpf_tx_queue *tx_q, /* record SW timestamp if HW timestamp is not available */ skb_tx_timestamp(skb); + first->type = LIBETH_SQE_SKB; + /* write last descriptor with RS and EOP bits */ + first->rs_idx = i; td_cmd |= params->eop_cmd; idpf_tx_splitq_build_desc(tx_desc, params, td_cmd, size); i = idpf_tx_splitq_bump_ntu(tx_q, i); - /* set next_to_watch value indicating a packet is present */ - first->next_to_watch = tx_desc; - tx_q->txq_grp->num_completions_pending++; /* record bytecount for BQL */ nq = netdev_get_tx_queue(tx_q->netdev, tx_q->idx); - netdev_tx_sent_queue(nq, first->bytecount); + netdev_tx_sent_queue(nq, first->bytes); idpf_tx_buf_hw_update(tx_q, i, netdev_xmit_more()); } @@ -2737,8 +2679,7 @@ idpf_tx_splitq_get_ctx_desc(struct idpf_tx_queue *txq) struct idpf_flex_tx_ctx_desc *desc; int i = txq->next_to_use; - memset(&txq->tx_buf[i], 0, sizeof(struct idpf_tx_buf)); - txq->tx_buf[i].compl_tag = IDPF_SPLITQ_TX_INVAL_COMPL_TAG; + txq->tx_buf[i].type = LIBETH_SQE_CTX; /* grab the next descriptor */ desc = &txq->flex_ctx[i]; @@ -2822,12 +2763,12 @@ static netdev_tx_t idpf_tx_splitq_frame(struct sk_buff *skb, first->skb = skb; if (tso) { - first->gso_segs = tx_params.offload.tso_segs; - first->bytecount = skb->len + - ((first->gso_segs - 1) * tx_params.offload.tso_hdr_len); + first->packets = tx_params.offload.tso_segs; + first->bytes = skb->len + + ((first->packets - 1) * tx_params.offload.tso_hdr_len); } else { - first->gso_segs = 1; - first->bytecount = max_t(unsigned int, skb->len, ETH_ZLEN); + first->packets = 1; + first->bytes = max_t(unsigned int, skb->len, ETH_ZLEN); } if (idpf_queue_has(FLOW_SCH_EN, tx_q)) { diff --git a/drivers/net/ethernet/intel/idpf/idpf_txrx.h b/drivers/net/ethernet/intel/idpf/idpf_txrx.h index 6215dbee5546..fa87754c7340 100644 --- a/drivers/net/ethernet/intel/idpf/idpf_txrx.h +++ b/drivers/net/ethernet/intel/idpf/idpf_txrx.h @@ -131,7 +131,6 @@ do { \ (txq)->num_completions_pending - (txq)->complq->num_completions) #define IDPF_TX_SPLITQ_COMPL_TAG_WIDTH 16 -#define IDPF_SPLITQ_TX_INVAL_COMPL_TAG -1 /* Adjust the generation for the completion tag and wrap if necessary */ #define IDPF_TX_ADJ_COMPL_TAG_GEN(txq) \ ((++(txq)->compl_tag_cur_gen) >= (txq)->compl_tag_gen_max ? \ @@ -149,47 +148,7 @@ union idpf_tx_flex_desc { struct idpf_flex_tx_sched_desc flow; /* flow based scheduling */ }; -/** - * struct idpf_tx_buf - * @next_to_watch: Next descriptor to clean - * @skb: Pointer to the skb - * @dma: DMA address - * @len: DMA length - * @bytecount: Number of bytes - * @gso_segs: Number of GSO segments - * @compl_tag: Splitq only, unique identifier for a buffer. Used to compare - * with completion tag returned in buffer completion event. - * Because the completion tag is expected to be the same in all - * data descriptors for a given packet, and a single packet can - * span multiple buffers, we need this field to track all - * buffers associated with this completion tag independently of - * the buf_id. The tag consists of a N bit buf_id and M upper - * order "generation bits". See compl_tag_bufid_m and - * compl_tag_gen_s in struct idpf_queue. We'll use a value of -1 - * to indicate the tag is not valid. - * @ctx_entry: Singleq only. Used to indicate the corresponding entry - * in the descriptor ring was used for a context descriptor and - * this buffer entry should be skipped. - */ -struct idpf_tx_buf { - void *next_to_watch; - struct sk_buff *skb; - DEFINE_DMA_UNMAP_ADDR(dma); - DEFINE_DMA_UNMAP_LEN(len); - unsigned int bytecount; - unsigned short gso_segs; - - union { - int compl_tag; - - bool ctx_entry; - }; -}; - -struct idpf_tx_stash { - struct hlist_node hlist; - struct idpf_tx_buf buf; -}; +#define idpf_tx_buf libeth_sqe /** * struct idpf_buf_lifo - LIFO for managing OOO completions @@ -496,10 +455,7 @@ struct idpf_tx_queue_stats { u64_stats_t dma_map_errs; }; -struct idpf_cleaned_stats { - u32 packets; - u32 bytes; -}; +#define idpf_cleaned_stats libeth_sq_napi_stats #define IDPF_ITR_DYNAMIC 1 #define IDPF_ITR_MAX 0x1FE0 @@ -688,7 +644,7 @@ struct idpf_tx_queue { void *desc_ring; }; - struct idpf_tx_buf *tx_buf; + struct libeth_sqe *tx_buf; struct idpf_txq_group *txq_grp; struct device *dev; void __iomem *tail;