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Tue, 28 May 2024 13:49:24 +0000 (UTC) X-CSE-ConnectionGUID: 5v47EFVWTuOA2vVmuCPJRg== X-CSE-MsgGUID: Y6V62p4MRviWCw+vYFfD/g== X-IronPort-AV: E=McAfee;i="6600,9927,11085"; a="13436993" X-IronPort-AV: E=Sophos;i="6.08,195,1712646000"; d="scan'208";a="13436993" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 May 2024 06:49:25 -0700 X-CSE-ConnectionGUID: tjLT4WmGRd+bIrCGXQ1uuQ== X-CSE-MsgGUID: mQJKURHPRSGXPTwsKQMNIQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,195,1712646000"; d="scan'208";a="35577404" Received: from newjersey.igk.intel.com ([10.102.20.203]) by orviesa008.jf.intel.com with ESMTP; 28 May 2024 06:49:21 -0700 From: Alexander Lobakin To: intel-wired-lan@lists.osuosl.org Date: Tue, 28 May 2024 15:48:36 +0200 Message-ID: <20240528134846.148890-3-aleksander.lobakin@intel.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240528134846.148890-1-aleksander.lobakin@intel.com> References: <20240528134846.148890-1-aleksander.lobakin@intel.com> MIME-Version: 1.0 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1716904165; x=1748440165; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=HwaIDR2fAY7gX+CIGBfpbMzNZ6t3L1RGLINYG2TiLJE=; b=ZhqKqPjLJRnQPBDecAWh5N5DMeYGIDqv2Q0/SGF4CjNX3CEo8nnadaKr 8c6pOwcjqFA+U81O17c+6qCVFw3oFJmRDPYFe4FxHH8jV3G5gi5wQn7R5 yqeNpad66xvBTmfZ07KdrRiWOr/uBRtghn4sCDrgG46GXxmSkH8BdIKGA TpC10dwA05MidIhAaK+VgOy38AXMhelmQETdzGlkGa9/Yybs+S1x5lOt0 jjwa6Q6lBrQbreJMnGMJNKc4rYM8tNDHc37IPHt/tL9kMgR6XunD2GWCZ 15XN6TMkzVIsdiQnuyyhxgEAGuMG+LLfbhvYIlnpA/P0AAeM9DRbwlW9w Q==; X-Mailman-Original-Authentication-Results: smtp3.osuosl.org; dmarc=pass (p=none dis=none) header.from=intel.com X-Mailman-Original-Authentication-Results: smtp3.osuosl.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=ZhqKqPjL Subject: [Intel-wired-lan] [PATCH iwl-next 02/12] idpf: stop using macros for accessing queue descriptors X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mina Almasry , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Alexander Lobakin , Eric Dumazet , Tony Nguyen , nex.sw.ncis.osdt.itp.upstreaming@intel.com, Przemek Kitszel , Jakub Kicinski , Paolo Abeni , "David S. Miller" Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" In C, we have structures and unions. Casting `void *` via macros is not only error-prone, but also looks confusing and awful in general. In preparation for splitting the queue structs, replace it with a union and direct array dereferences. Reviewed-by: Przemek Kitszel Reviewed-by: Mina Almasry Signed-off-by: Alexander Lobakin --- drivers/net/ethernet/intel/idpf/idpf.h | 1 - .../net/ethernet/intel/idpf/idpf_lan_txrx.h | 2 + drivers/net/ethernet/intel/idpf/idpf_txrx.h | 47 ++++++++++--------- .../ethernet/intel/idpf/idpf_singleq_txrx.c | 20 ++++---- drivers/net/ethernet/intel/idpf/idpf_txrx.c | 32 ++++++------- 5 files changed, 52 insertions(+), 50 deletions(-) diff --git a/drivers/net/ethernet/intel/idpf/idpf.h b/drivers/net/ethernet/intel/idpf/idpf.h index e7a036538246..0b26dd9b8a51 100644 --- a/drivers/net/ethernet/intel/idpf/idpf.h +++ b/drivers/net/ethernet/intel/idpf/idpf.h @@ -20,7 +20,6 @@ struct idpf_vport_max_q; #include #include "virtchnl2.h" -#include "idpf_lan_txrx.h" #include "idpf_txrx.h" #include "idpf_controlq.h" diff --git a/drivers/net/ethernet/intel/idpf/idpf_lan_txrx.h b/drivers/net/ethernet/intel/idpf/idpf_lan_txrx.h index a5752dcab888..8c7f8ef8f1a1 100644 --- a/drivers/net/ethernet/intel/idpf/idpf_lan_txrx.h +++ b/drivers/net/ethernet/intel/idpf/idpf_lan_txrx.h @@ -4,6 +4,8 @@ #ifndef _IDPF_LAN_TXRX_H_ #define _IDPF_LAN_TXRX_H_ +#include + enum idpf_rss_hash { IDPF_HASH_INVALID = 0, /* Values 1 - 28 are reserved for future use */ diff --git a/drivers/net/ethernet/intel/idpf/idpf_txrx.h b/drivers/net/ethernet/intel/idpf/idpf_txrx.h index 551391e20464..6dce14483215 100644 --- a/drivers/net/ethernet/intel/idpf/idpf_txrx.h +++ b/drivers/net/ethernet/intel/idpf/idpf_txrx.h @@ -8,6 +8,7 @@ #include #include +#include "idpf_lan_txrx.h" #include "virtchnl2_lan_desc.h" #define IDPF_LARGE_MAX_Q 256 @@ -117,24 +118,6 @@ do { \ #define IDPF_RXD_EOF_SPLITQ VIRTCHNL2_RX_FLEX_DESC_ADV_STATUS0_EOF_M #define IDPF_RXD_EOF_SINGLEQ VIRTCHNL2_RX_BASE_DESC_STATUS_EOF_M -#define IDPF_SINGLEQ_RX_BUF_DESC(rxq, i) \ - (&(((struct virtchnl2_singleq_rx_buf_desc *)((rxq)->desc_ring))[i])) -#define IDPF_SPLITQ_RX_BUF_DESC(rxq, i) \ - (&(((struct virtchnl2_splitq_rx_buf_desc *)((rxq)->desc_ring))[i])) -#define IDPF_SPLITQ_RX_BI_DESC(rxq, i) ((((rxq)->ring))[i]) - -#define IDPF_BASE_TX_DESC(txq, i) \ - (&(((struct idpf_base_tx_desc *)((txq)->desc_ring))[i])) -#define IDPF_BASE_TX_CTX_DESC(txq, i) \ - (&(((struct idpf_base_tx_ctx_desc *)((txq)->desc_ring))[i])) -#define IDPF_SPLITQ_TX_COMPLQ_DESC(txcq, i) \ - (&(((struct idpf_splitq_tx_compl_desc *)((txcq)->desc_ring))[i])) - -#define IDPF_FLEX_TX_DESC(txq, i) \ - (&(((union idpf_tx_flex_desc *)((txq)->desc_ring))[i])) -#define IDPF_FLEX_TX_CTX_DESC(txq, i) \ - (&(((struct idpf_flex_tx_ctx_desc *)((txq)->desc_ring))[i])) - #define IDPF_DESC_UNUSED(txq) \ ((((txq)->next_to_clean > (txq)->next_to_use) ? 0 : (txq)->desc_count) + \ (txq)->next_to_clean - (txq)->next_to_use - 1) @@ -317,8 +300,6 @@ struct idpf_rx_extracted { #define IDPF_RX_DMA_ATTR \ (DMA_ATTR_SKIP_CPU_SYNC | DMA_ATTR_WEAK_ORDERING) -#define IDPF_RX_DESC(rxq, i) \ - (&(((union virtchnl2_rx_desc *)((rxq)->desc_ring))[i])) struct idpf_rx_buf { struct page *page; @@ -655,7 +636,15 @@ union idpf_queue_stats { * @q_vector: Backreference to associated vector * @size: Length of descriptor ring in bytes * @dma: Physical address of ring - * @desc_ring: Descriptor ring memory + * @rx: universal receive descriptor array + * @single_buf: Rx buffer descriptor array in singleq + * @split_buf: Rx buffer descriptor array in splitq + * @base_tx: basic Tx descriptor array + * @base_ctx: basic Tx context descriptor array + * @flex_tx: flex Tx descriptor array + * @flex_ctx: flex Tx context descriptor array + * @comp: completion descriptor array + * @desc_ring: virtual descriptor ring address * @tx_max_bufs: Max buffers that can be transmitted with scatter-gather * @tx_min_pkt_len: Min supported packet length * @num_completions: Only relevant for TX completion queue. It tracks the @@ -733,7 +722,21 @@ struct idpf_queue { struct idpf_q_vector *q_vector; unsigned int size; dma_addr_t dma; - void *desc_ring; + union { + union virtchnl2_rx_desc *rx; + + struct virtchnl2_singleq_rx_buf_desc *single_buf; + struct virtchnl2_splitq_rx_buf_desc *split_buf; + + struct idpf_base_tx_desc *base_tx; + struct idpf_base_tx_ctx_desc *base_ctx; + union idpf_tx_flex_desc *flex_tx; + struct idpf_flex_tx_ctx_desc *flex_ctx; + + struct idpf_splitq_tx_compl_desc *comp; + + void *desc_ring; + }; u16 tx_max_bufs; u8 tx_min_pkt_len; diff --git a/drivers/net/ethernet/intel/idpf/idpf_singleq_txrx.c b/drivers/net/ethernet/intel/idpf/idpf_singleq_txrx.c index 27b93592c4ba..b17d88e15000 100644 --- a/drivers/net/ethernet/intel/idpf/idpf_singleq_txrx.c +++ b/drivers/net/ethernet/intel/idpf/idpf_singleq_txrx.c @@ -205,7 +205,7 @@ static void idpf_tx_singleq_map(struct idpf_queue *tx_q, data_len = skb->data_len; size = skb_headlen(skb); - tx_desc = IDPF_BASE_TX_DESC(tx_q, i); + tx_desc = &tx_q->base_tx[i]; dma = dma_map_single(tx_q->dev, skb->data, size, DMA_TO_DEVICE); @@ -239,7 +239,7 @@ static void idpf_tx_singleq_map(struct idpf_queue *tx_q, i++; if (i == tx_q->desc_count) { - tx_desc = IDPF_BASE_TX_DESC(tx_q, 0); + tx_desc = &tx_q->base_tx[0]; i = 0; } @@ -259,7 +259,7 @@ static void idpf_tx_singleq_map(struct idpf_queue *tx_q, i++; if (i == tx_q->desc_count) { - tx_desc = IDPF_BASE_TX_DESC(tx_q, 0); + tx_desc = &tx_q->base_tx[0]; i = 0; } @@ -307,7 +307,7 @@ idpf_tx_singleq_get_ctx_desc(struct idpf_queue *txq) memset(&txq->tx_buf[ntu], 0, sizeof(struct idpf_tx_buf)); txq->tx_buf[ntu].ctx_entry = true; - ctx_desc = IDPF_BASE_TX_CTX_DESC(txq, ntu); + ctx_desc = &txq->base_ctx[ntu]; IDPF_SINGLEQ_BUMP_RING_IDX(txq, ntu); txq->next_to_use = ntu; @@ -455,7 +455,7 @@ static bool idpf_tx_singleq_clean(struct idpf_queue *tx_q, int napi_budget, struct netdev_queue *nq; bool dont_wake; - tx_desc = IDPF_BASE_TX_DESC(tx_q, ntc); + tx_desc = &tx_q->base_tx[ntc]; tx_buf = &tx_q->tx_buf[ntc]; ntc -= tx_q->desc_count; @@ -517,7 +517,7 @@ static bool idpf_tx_singleq_clean(struct idpf_queue *tx_q, int napi_budget, if (unlikely(!ntc)) { ntc -= tx_q->desc_count; tx_buf = tx_q->tx_buf; - tx_desc = IDPF_BASE_TX_DESC(tx_q, 0); + tx_desc = &tx_q->base_tx[0]; } /* unmap any remaining paged data */ @@ -540,7 +540,7 @@ static bool idpf_tx_singleq_clean(struct idpf_queue *tx_q, int napi_budget, if (unlikely(!ntc)) { ntc -= tx_q->desc_count; tx_buf = tx_q->tx_buf; - tx_desc = IDPF_BASE_TX_DESC(tx_q, 0); + tx_desc = &tx_q->base_tx[0]; } } while (likely(budget)); @@ -895,7 +895,7 @@ bool idpf_rx_singleq_buf_hw_alloc_all(struct idpf_queue *rx_q, if (!cleaned_count) return false; - desc = IDPF_SINGLEQ_RX_BUF_DESC(rx_q, nta); + desc = &rx_q->single_buf[nta]; buf = &rx_q->rx_buf.buf[nta]; do { @@ -915,7 +915,7 @@ bool idpf_rx_singleq_buf_hw_alloc_all(struct idpf_queue *rx_q, buf++; nta++; if (unlikely(nta == rx_q->desc_count)) { - desc = IDPF_SINGLEQ_RX_BUF_DESC(rx_q, 0); + desc = &rx_q->single_buf[0]; buf = rx_q->rx_buf.buf; nta = 0; } @@ -1016,7 +1016,7 @@ static int idpf_rx_singleq_clean(struct idpf_queue *rx_q, int budget) struct idpf_rx_buf *rx_buf; /* get the Rx desc from Rx queue based on 'next_to_clean' */ - rx_desc = IDPF_RX_DESC(rx_q, ntc); + rx_desc = &rx_q->rx[ntc]; /* status_error_ptype_len will always be zero for unused * descriptors because it's cleared in cleanup, and overlaps diff --git a/drivers/net/ethernet/intel/idpf/idpf_txrx.c b/drivers/net/ethernet/intel/idpf/idpf_txrx.c index b023704bbbda..01301e640fba 100644 --- a/drivers/net/ethernet/intel/idpf/idpf_txrx.c +++ b/drivers/net/ethernet/intel/idpf/idpf_txrx.c @@ -531,7 +531,7 @@ static bool idpf_rx_post_buf_desc(struct idpf_queue *bufq, u16 buf_id) struct idpf_rx_buf *buf; dma_addr_t addr; - splitq_rx_desc = IDPF_SPLITQ_RX_BUF_DESC(bufq, nta); + splitq_rx_desc = &bufq->split_buf[nta]; buf = &bufq->rx_buf.buf[buf_id]; if (bufq->rx_hsplit_en) { @@ -1584,7 +1584,7 @@ do { \ if (unlikely(!(ntc))) { \ ntc -= (txq)->desc_count; \ buf = (txq)->tx_buf; \ - desc = IDPF_FLEX_TX_DESC(txq, 0); \ + desc = &(txq)->flex_tx[0]; \ } else { \ (buf)++; \ (desc)++; \ @@ -1617,8 +1617,8 @@ static void idpf_tx_splitq_clean(struct idpf_queue *tx_q, u16 end, s16 ntc = tx_q->next_to_clean; struct idpf_tx_buf *tx_buf; - tx_desc = IDPF_FLEX_TX_DESC(tx_q, ntc); - next_pending_desc = IDPF_FLEX_TX_DESC(tx_q, end); + tx_desc = &tx_q->flex_tx[ntc]; + next_pending_desc = &tx_q->flex_tx[end]; tx_buf = &tx_q->tx_buf[ntc]; ntc -= tx_q->desc_count; @@ -1814,7 +1814,7 @@ static bool idpf_tx_clean_complq(struct idpf_queue *complq, int budget, int i; complq_budget = vport->compln_clean_budget; - tx_desc = IDPF_SPLITQ_TX_COMPLQ_DESC(complq, ntc); + tx_desc = &complq->comp[ntc]; ntc -= complq->desc_count; do { @@ -1879,7 +1879,7 @@ static bool idpf_tx_clean_complq(struct idpf_queue *complq, int budget, ntc++; if (unlikely(!ntc)) { ntc -= complq->desc_count; - tx_desc = IDPF_SPLITQ_TX_COMPLQ_DESC(complq, 0); + tx_desc = &complq->comp[0]; change_bit(__IDPF_Q_GEN_CHK, complq->flags); } @@ -2143,7 +2143,7 @@ void idpf_tx_dma_map_error(struct idpf_queue *txq, struct sk_buff *skb, * used one additional descriptor for a context * descriptor. Reset that here. */ - tx_desc = IDPF_FLEX_TX_DESC(txq, idx); + tx_desc = &txq->flex_tx[idx]; memset(tx_desc, 0, sizeof(struct idpf_flex_tx_ctx_desc)); if (idx == 0) idx = txq->desc_count; @@ -2202,7 +2202,7 @@ static void idpf_tx_splitq_map(struct idpf_queue *tx_q, data_len = skb->data_len; size = skb_headlen(skb); - tx_desc = IDPF_FLEX_TX_DESC(tx_q, i); + tx_desc = &tx_q->flex_tx[i]; dma = dma_map_single(tx_q->dev, skb->data, size, DMA_TO_DEVICE); @@ -2275,7 +2275,7 @@ static void idpf_tx_splitq_map(struct idpf_queue *tx_q, i++; if (i == tx_q->desc_count) { - tx_desc = IDPF_FLEX_TX_DESC(tx_q, 0); + tx_desc = &tx_q->flex_tx[0]; i = 0; tx_q->compl_tag_cur_gen = IDPF_TX_ADJ_COMPL_TAG_GEN(tx_q); @@ -2320,7 +2320,7 @@ static void idpf_tx_splitq_map(struct idpf_queue *tx_q, i++; if (i == tx_q->desc_count) { - tx_desc = IDPF_FLEX_TX_DESC(tx_q, 0); + tx_desc = &tx_q->flex_tx[0]; i = 0; tx_q->compl_tag_cur_gen = IDPF_TX_ADJ_COMPL_TAG_GEN(tx_q); } @@ -2553,7 +2553,7 @@ idpf_tx_splitq_get_ctx_desc(struct idpf_queue *txq) txq->tx_buf[i].compl_tag = IDPF_SPLITQ_TX_INVAL_COMPL_TAG; /* grab the next descriptor */ - desc = IDPF_FLEX_TX_CTX_DESC(txq, i); + desc = &txq->flex_ctx[i]; txq->next_to_use = idpf_tx_splitq_bump_ntu(txq, i); return desc; @@ -3128,7 +3128,6 @@ static int idpf_rx_splitq_clean(struct idpf_queue *rxq, int budget) struct idpf_sw_queue *refillq = NULL; struct idpf_rxq_set *rxq_set = NULL; struct idpf_rx_buf *rx_buf = NULL; - union virtchnl2_rx_desc *desc; unsigned int pkt_len = 0; unsigned int hdr_len = 0; u16 gen_id, buf_id = 0; @@ -3138,8 +3137,7 @@ static int idpf_rx_splitq_clean(struct idpf_queue *rxq, int budget) u8 rxdid; /* get the Rx desc from Rx queue based on 'next_to_clean' */ - desc = IDPF_RX_DESC(rxq, ntc); - rx_desc = (struct virtchnl2_rx_flex_desc_adv_nic_3 *)desc; + rx_desc = &rxq->rx[ntc].flex_adv_nic_3_wb; /* This memory barrier is needed to keep us from reading * any other fields out of the rx_desc @@ -3320,11 +3318,11 @@ static void idpf_rx_clean_refillq(struct idpf_queue *bufq, int cleaned = 0; u16 gen; - buf_desc = IDPF_SPLITQ_RX_BUF_DESC(bufq, bufq_nta); + buf_desc = &bufq->split_buf[bufq_nta]; /* make sure we stop at ring wrap in the unlikely case ring is full */ while (likely(cleaned < refillq->desc_count)) { - u16 refill_desc = IDPF_SPLITQ_RX_BI_DESC(refillq, ntc); + u16 refill_desc = refillq->ring[ntc]; bool failure; gen = FIELD_GET(IDPF_RX_BI_GEN_M, refill_desc); @@ -3342,7 +3340,7 @@ static void idpf_rx_clean_refillq(struct idpf_queue *bufq, } if (unlikely(++bufq_nta == bufq->desc_count)) { - buf_desc = IDPF_SPLITQ_RX_BUF_DESC(bufq, 0); + buf_desc = &bufq->split_buf[0]; bufq_nta = 0; } else { buf_desc++;