From patchwork Thu May 30 07:26:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xuan Zhuo X-Patchwork-Id: 13679846 X-Patchwork-Delegate: kuba@kernel.org Received: from out30-130.freemail.mail.aliyun.com (out30-130.freemail.mail.aliyun.com [115.124.30.130]) (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 598745588C; Thu, 30 May 2024 07:27:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.124.30.130 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717054024; cv=none; b=XwjXyv9ByQDSgSj61Zu9YiZnuLK6mQViPMno82WUfXE4S3qK8Pu41Hl6CAGINMPAD+wwOREj0PAsR/5mc57g2drm00Gd3GSgBzWX9OjjxPl9v/+b1GrWDDMmahv9Ft/Gg4jkgeeibmD07KOJY6jEeQbnyEpbImM0vD0WXypgvCg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717054024; c=relaxed/simple; bh=/Y++BUgwmsAi4LotPXXUDwwIyfSH2FaWbU9WaBlSza8=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=XSlU/2YxIsqyUYLO16mMAwBe9w/29I6JHwSMttEkEgxgdvtuBLFtWqMkYiOU64cQ3y4TkMDLcgvLZq59w0sVpkqNZDrQmGd74HUmzX4lrTXh2VMC82zmoFtsb9UascJAx3NCLJjn38HaTWeVA6oaQEmddxGJcRPfecaIBYZP7lw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com; spf=pass smtp.mailfrom=linux.alibaba.com; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b=WzmFLsZJ; arc=none smtp.client-ip=115.124.30.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b="WzmFLsZJ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1717054013; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=AzVVmzVGUvpPZ1lBvI2l0KxHDg3VLj9A3OfOYHQ+Y6w=; b=WzmFLsZJ/T3cV3NcZfjaU6SHQ0WrGHvaOgt9W7RkAtscH6xy2TN06oLCUsLw8Z+ckyOQX5nu3ou2XaeNCJHGNptwooK55pd1eMpBmhuIeIb9NCoVRDNd7ZAZAd85+cxaT1dVlPxRKPGN3lLFvtOgC+NP7cE7MyYQxekmyOaxu4s= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R211e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam033045046011;MF=xuanzhuo@linux.alibaba.com;NM=1;PH=DS;RN=15;SR=0;TI=SMTPD_---0W7WD.wE_1717054011; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0W7WD.wE_1717054011) by smtp.aliyun-inc.com; Thu, 30 May 2024 15:26:52 +0800 From: Xuan Zhuo To: netdev@vger.kernel.org Cc: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?utf-8?q?Eugenio_P=C3=A9rez?= , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , virtualization@lists.linux.dev, bpf@vger.kernel.org Subject: [PATCH net-next v1 2/7] virtio_net: move core structures to virtio_net.h Date: Thu, 30 May 2024 15:26:44 +0800 Message-Id: <20240530072649.102437-3-xuanzhuo@linux.alibaba.com> X-Mailer: git-send-email 2.32.0.3.g01195cf9f In-Reply-To: <20240530072649.102437-1-xuanzhuo@linux.alibaba.com> References: <20240530072649.102437-1-xuanzhuo@linux.alibaba.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Git-Hash: 12be1d34ab2c X-Patchwork-Delegate: kuba@kernel.org Move some core structures (send_queue, receive_queue, virtnet_info) definitions and the relative structures definitions into the virtio_net.h file. That will be used by the other c code files. Signed-off-by: Xuan Zhuo Acked-by: Jason Wang --- drivers/net/virtio/virtnet.h | 239 ++++++++++++++++++++++++++++++ drivers/net/virtio/virtnet_main.c | 235 +---------------------------- 2 files changed, 241 insertions(+), 233 deletions(-) create mode 100644 drivers/net/virtio/virtnet.h diff --git a/drivers/net/virtio/virtnet.h b/drivers/net/virtio/virtnet.h new file mode 100644 index 000000000000..e46db9491605 --- /dev/null +++ b/drivers/net/virtio/virtnet.h @@ -0,0 +1,239 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#ifndef __VIRTIO_NET_H__ +#define __VIRTIO_NET_H__ + +#include +#include + +/* RX packet size EWMA. The average packet size is used to determine the packet + * buffer size when refilling RX rings. As the entire RX ring may be refilled + * at once, the weight is chosen so that the EWMA will be insensitive to short- + * term, transient changes in packet size. + */ +DECLARE_EWMA(pkt_len, 0, 64) + +struct virtnet_sq_stats { + struct u64_stats_sync syncp; + u64_stats_t packets; + u64_stats_t bytes; + u64_stats_t xdp_tx; + u64_stats_t xdp_tx_drops; + u64_stats_t kicks; + u64_stats_t tx_timeouts; + u64_stats_t stop; + u64_stats_t wake; +}; + +struct virtnet_rq_stats { + struct u64_stats_sync syncp; + u64_stats_t packets; + u64_stats_t bytes; + u64_stats_t drops; + u64_stats_t xdp_packets; + u64_stats_t xdp_tx; + u64_stats_t xdp_redirects; + u64_stats_t xdp_drops; + u64_stats_t kicks; +}; + +struct virtnet_interrupt_coalesce { + u32 max_packets; + u32 max_usecs; +}; + +/* The dma information of pages allocated at a time. */ +struct virtnet_rq_dma { + dma_addr_t addr; + u32 ref; + u16 len; + u16 need_sync; +}; + +/* Internal representation of a send virtqueue */ +struct send_queue { + /* Virtqueue associated with this send _queue */ + struct virtqueue *vq; + + /* TX: fragments + linear part + virtio header */ + struct scatterlist sg[MAX_SKB_FRAGS + 2]; + + /* Name of the send queue: output.$index */ + char name[16]; + + struct virtnet_sq_stats stats; + + struct virtnet_interrupt_coalesce intr_coal; + + struct napi_struct napi; + + /* Record whether sq is in reset state. */ + bool reset; +}; + +/* Internal representation of a receive virtqueue */ +struct receive_queue { + /* Virtqueue associated with this receive_queue */ + struct virtqueue *vq; + + struct napi_struct napi; + + struct bpf_prog __rcu *xdp_prog; + + struct virtnet_rq_stats stats; + + /* The number of rx notifications */ + u16 calls; + + /* Is dynamic interrupt moderation enabled? */ + bool dim_enabled; + + /* Used to protect dim_enabled and inter_coal */ + struct mutex dim_lock; + + /* Dynamic Interrupt Moderation */ + struct dim dim; + + u32 packets_in_napi; + + struct virtnet_interrupt_coalesce intr_coal; + + /* Chain pages by the private ptr. */ + struct page *pages; + + /* Average packet length for mergeable receive buffers. */ + struct ewma_pkt_len mrg_avg_pkt_len; + + /* Page frag for packet buffer allocation. */ + struct page_frag alloc_frag; + + /* RX: fragments + linear part + virtio header */ + struct scatterlist sg[MAX_SKB_FRAGS + 2]; + + /* Min single buffer size for mergeable buffers case. */ + unsigned int min_buf_len; + + /* Name of this receive queue: input.$index */ + char name[16]; + + struct xdp_rxq_info xdp_rxq; + + /* Record the last dma info to free after new pages is allocated. */ + struct virtnet_rq_dma *last_dma; +}; + +/* This structure can contain rss message with maximum settings for indirection table and keysize + * Note, that default structure that describes RSS configuration virtio_net_rss_config + * contains same info but can't handle table values. + * In any case, structure would be passed to virtio hw through sg_buf split by parts + * because table sizes may be differ according to the device configuration. + */ +#define VIRTIO_NET_RSS_MAX_KEY_SIZE 40 +#define VIRTIO_NET_RSS_MAX_TABLE_LEN 128 +struct virtio_net_ctrl_rss { + u32 hash_types; + u16 indirection_table_mask; + u16 unclassified_queue; + u16 indirection_table[VIRTIO_NET_RSS_MAX_TABLE_LEN]; + u16 max_tx_vq; + u8 hash_key_length; + u8 key[VIRTIO_NET_RSS_MAX_KEY_SIZE]; +}; + +struct virtnet_info { + struct virtio_device *vdev; + struct virtqueue *cvq; + struct net_device *dev; + struct send_queue *sq; + struct receive_queue *rq; + unsigned int status; + + /* Max # of queue pairs supported by the device */ + u16 max_queue_pairs; + + /* # of queue pairs currently used by the driver */ + u16 curr_queue_pairs; + + /* # of XDP queue pairs currently used by the driver */ + u16 xdp_queue_pairs; + + /* xdp_queue_pairs may be 0, when xdp is already loaded. So add this. */ + bool xdp_enabled; + + /* I like... big packets and I cannot lie! */ + bool big_packets; + + /* number of sg entries allocated for big packets */ + unsigned int big_packets_num_skbfrags; + + /* Host will merge rx buffers for big packets (shake it! shake it!) */ + bool mergeable_rx_bufs; + + /* Host supports rss and/or hash report */ + bool has_rss; + bool has_rss_hash_report; + u8 rss_key_size; + u16 rss_indir_table_size; + u32 rss_hash_types_supported; + u32 rss_hash_types_saved; + struct virtio_net_ctrl_rss rss; + + /* Has control virtqueue */ + bool has_cvq; + + /* Lock to protect the control VQ */ + struct mutex cvq_lock; + + /* Host can handle any s/g split between our header and packet data */ + bool any_header_sg; + + /* Packet virtio header size */ + u8 hdr_len; + + /* Work struct for delayed refilling if we run low on memory. */ + struct delayed_work refill; + + /* Is delayed refill enabled? */ + bool refill_enabled; + + /* The lock to synchronize the access to refill_enabled */ + spinlock_t refill_lock; + + /* Work struct for config space updates */ + struct work_struct config_work; + + /* Work struct for setting rx mode */ + struct work_struct rx_mode_work; + + /* OK to queue work setting RX mode? */ + bool rx_mode_work_enabled; + + /* Does the affinity hint is set for virtqueues? */ + bool affinity_hint_set; + + /* CPU hotplug instances for online & dead */ + struct hlist_node node; + struct hlist_node node_dead; + + struct control_buf *ctrl; + + /* Ethtool settings */ + u8 duplex; + u32 speed; + + /* Is rx dynamic interrupt moderation enabled? */ + bool rx_dim_enabled; + + /* Interrupt coalescing settings */ + struct virtnet_interrupt_coalesce intr_coal_tx; + struct virtnet_interrupt_coalesce intr_coal_rx; + + unsigned long guest_offloads; + unsigned long guest_offloads_capable; + + /* failover when STANDBY feature enabled */ + struct failover *failover; + + u64 device_stats_cap; +}; +#endif diff --git a/drivers/net/virtio/virtnet_main.c b/drivers/net/virtio/virtnet_main.c index 4a802c0ea2cb..faff5d719440 100644 --- a/drivers/net/virtio/virtnet_main.c +++ b/drivers/net/virtio/virtnet_main.c @@ -6,7 +6,6 @@ //#define DEBUG #include #include -#include #include #include #include @@ -16,7 +15,6 @@ #include #include #include -#include #include #include #include @@ -26,6 +24,8 @@ #include #include +#include "virtnet.h" + static int napi_weight = NAPI_POLL_WEIGHT; module_param(napi_weight, int, 0444); @@ -49,13 +49,6 @@ module_param(napi_tx, bool, 0644); #define VIRTIO_XDP_FLAG BIT(0) -/* RX packet size EWMA. The average packet size is used to determine the packet - * buffer size when refilling RX rings. As the entire RX ring may be refilled - * at once, the weight is chosen so that the EWMA will be insensitive to short- - * term, transient changes in packet size. - */ -DECLARE_EWMA(pkt_len, 0, 64) - #define VIRTNET_DRIVER_VERSION "1.0.0" static const unsigned long guest_offloads[] = { @@ -87,30 +80,6 @@ struct virtnet_sq_free_stats { u64 bytes; }; -struct virtnet_sq_stats { - struct u64_stats_sync syncp; - u64_stats_t packets; - u64_stats_t bytes; - u64_stats_t xdp_tx; - u64_stats_t xdp_tx_drops; - u64_stats_t kicks; - u64_stats_t tx_timeouts; - u64_stats_t stop; - u64_stats_t wake; -}; - -struct virtnet_rq_stats { - struct u64_stats_sync syncp; - u64_stats_t packets; - u64_stats_t bytes; - u64_stats_t drops; - u64_stats_t xdp_packets; - u64_stats_t xdp_tx; - u64_stats_t xdp_redirects; - u64_stats_t xdp_drops; - u64_stats_t kicks; -}; - #define VIRTNET_SQ_STAT(name, m) {name, offsetof(struct virtnet_sq_stats, m), -1} #define VIRTNET_RQ_STAT(name, m) {name, offsetof(struct virtnet_rq_stats, m), -1} @@ -265,212 +234,12 @@ static const struct virtnet_stat_desc virtnet_stats_tx_speed_desc_qstat[] = { #define VIRTNET_Q_TYPE_TX 1 #define VIRTNET_Q_TYPE_CQ 2 -struct virtnet_interrupt_coalesce { - u32 max_packets; - u32 max_usecs; -}; - -/* The dma information of pages allocated at a time. */ -struct virtnet_rq_dma { - dma_addr_t addr; - u32 ref; - u16 len; - u16 need_sync; -}; - -/* Internal representation of a send virtqueue */ -struct send_queue { - /* Virtqueue associated with this send _queue */ - struct virtqueue *vq; - - /* TX: fragments + linear part + virtio header */ - struct scatterlist sg[MAX_SKB_FRAGS + 2]; - - /* Name of the send queue: output.$index */ - char name[16]; - - struct virtnet_sq_stats stats; - - struct virtnet_interrupt_coalesce intr_coal; - - struct napi_struct napi; - - /* Record whether sq is in reset state. */ - bool reset; -}; - -/* Internal representation of a receive virtqueue */ -struct receive_queue { - /* Virtqueue associated with this receive_queue */ - struct virtqueue *vq; - - struct napi_struct napi; - - struct bpf_prog __rcu *xdp_prog; - - struct virtnet_rq_stats stats; - - /* The number of rx notifications */ - u16 calls; - - /* Is dynamic interrupt moderation enabled? */ - bool dim_enabled; - - /* Used to protect dim_enabled and inter_coal */ - struct mutex dim_lock; - - /* Dynamic Interrupt Moderation */ - struct dim dim; - - u32 packets_in_napi; - - struct virtnet_interrupt_coalesce intr_coal; - - /* Chain pages by the private ptr. */ - struct page *pages; - - /* Average packet length for mergeable receive buffers. */ - struct ewma_pkt_len mrg_avg_pkt_len; - - /* Page frag for packet buffer allocation. */ - struct page_frag alloc_frag; - - /* RX: fragments + linear part + virtio header */ - struct scatterlist sg[MAX_SKB_FRAGS + 2]; - - /* Min single buffer size for mergeable buffers case. */ - unsigned int min_buf_len; - - /* Name of this receive queue: input.$index */ - char name[16]; - - struct xdp_rxq_info xdp_rxq; - - /* Record the last dma info to free after new pages is allocated. */ - struct virtnet_rq_dma *last_dma; -}; - -/* This structure can contain rss message with maximum settings for indirection table and keysize - * Note, that default structure that describes RSS configuration virtio_net_rss_config - * contains same info but can't handle table values. - * In any case, structure would be passed to virtio hw through sg_buf split by parts - * because table sizes may be differ according to the device configuration. - */ -#define VIRTIO_NET_RSS_MAX_KEY_SIZE 40 -#define VIRTIO_NET_RSS_MAX_TABLE_LEN 128 -struct virtio_net_ctrl_rss { - u32 hash_types; - u16 indirection_table_mask; - u16 unclassified_queue; - u16 indirection_table[VIRTIO_NET_RSS_MAX_TABLE_LEN]; - u16 max_tx_vq; - u8 hash_key_length; - u8 key[VIRTIO_NET_RSS_MAX_KEY_SIZE]; -}; - /* Control VQ buffers: protected by the rtnl lock */ struct control_buf { struct virtio_net_ctrl_hdr hdr; virtio_net_ctrl_ack status; }; -struct virtnet_info { - struct virtio_device *vdev; - struct virtqueue *cvq; - struct net_device *dev; - struct send_queue *sq; - struct receive_queue *rq; - unsigned int status; - - /* Max # of queue pairs supported by the device */ - u16 max_queue_pairs; - - /* # of queue pairs currently used by the driver */ - u16 curr_queue_pairs; - - /* # of XDP queue pairs currently used by the driver */ - u16 xdp_queue_pairs; - - /* xdp_queue_pairs may be 0, when xdp is already loaded. So add this. */ - bool xdp_enabled; - - /* I like... big packets and I cannot lie! */ - bool big_packets; - - /* number of sg entries allocated for big packets */ - unsigned int big_packets_num_skbfrags; - - /* Host will merge rx buffers for big packets (shake it! shake it!) */ - bool mergeable_rx_bufs; - - /* Host supports rss and/or hash report */ - bool has_rss; - bool has_rss_hash_report; - u8 rss_key_size; - u16 rss_indir_table_size; - u32 rss_hash_types_supported; - u32 rss_hash_types_saved; - struct virtio_net_ctrl_rss rss; - - /* Has control virtqueue */ - bool has_cvq; - - /* Lock to protect the control VQ */ - struct mutex cvq_lock; - - /* Host can handle any s/g split between our header and packet data */ - bool any_header_sg; - - /* Packet virtio header size */ - u8 hdr_len; - - /* Work struct for delayed refilling if we run low on memory. */ - struct delayed_work refill; - - /* Is delayed refill enabled? */ - bool refill_enabled; - - /* The lock to synchronize the access to refill_enabled */ - spinlock_t refill_lock; - - /* Work struct for config space updates */ - struct work_struct config_work; - - /* Work struct for setting rx mode */ - struct work_struct rx_mode_work; - - /* OK to queue work setting RX mode? */ - bool rx_mode_work_enabled; - - /* Does the affinity hint is set for virtqueues? */ - bool affinity_hint_set; - - /* CPU hotplug instances for online & dead */ - struct hlist_node node; - struct hlist_node node_dead; - - struct control_buf *ctrl; - - /* Ethtool settings */ - u8 duplex; - u32 speed; - - /* Is rx dynamic interrupt moderation enabled? */ - bool rx_dim_enabled; - - /* Interrupt coalescing settings */ - struct virtnet_interrupt_coalesce intr_coal_tx; - struct virtnet_interrupt_coalesce intr_coal_rx; - - unsigned long guest_offloads; - unsigned long guest_offloads_capable; - - /* failover when STANDBY feature enabled */ - struct failover *failover; - - u64 device_stats_cap; -}; - struct padded_vnet_hdr { struct virtio_net_hdr_v1_hash hdr; /*