From bedbef8ad3e75a304af6361af235302bcc61d06b Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 14 May 2024 06:39:01 +0000
Subject: [PATCH] 修改内核路径
---
kernel/include/uapi/linux/virtio_net.h | 110 +++++++++++++++++++++++++++++++++++++++++++++++++++----
1 files changed, 102 insertions(+), 8 deletions(-)
diff --git a/kernel/include/uapi/linux/virtio_net.h b/kernel/include/uapi/linux/virtio_net.h
index a3715a3..3f55a42 100644
--- a/kernel/include/uapi/linux/virtio_net.h
+++ b/kernel/include/uapi/linux/virtio_net.h
@@ -57,6 +57,9 @@
* Steering */
#define VIRTIO_NET_F_CTRL_MAC_ADDR 23 /* Set MAC address */
+#define VIRTIO_NET_F_HASH_REPORT 57 /* Supports hash report */
+#define VIRTIO_NET_F_RSS 60 /* Supports RSS RX steering */
+#define VIRTIO_NET_F_RSC_EXT 61 /* extended coalescing info */
#define VIRTIO_NET_F_STANDBY 62 /* Act as standby for another device
* with the same MAC.
*/
@@ -69,29 +72,46 @@
#define VIRTIO_NET_S_LINK_UP 1 /* Link is up */
#define VIRTIO_NET_S_ANNOUNCE 2 /* Announcement is needed */
+/* supported/enabled hash types */
+#define VIRTIO_NET_RSS_HASH_TYPE_IPv4 (1 << 0)
+#define VIRTIO_NET_RSS_HASH_TYPE_TCPv4 (1 << 1)
+#define VIRTIO_NET_RSS_HASH_TYPE_UDPv4 (1 << 2)
+#define VIRTIO_NET_RSS_HASH_TYPE_IPv6 (1 << 3)
+#define VIRTIO_NET_RSS_HASH_TYPE_TCPv6 (1 << 4)
+#define VIRTIO_NET_RSS_HASH_TYPE_UDPv6 (1 << 5)
+#define VIRTIO_NET_RSS_HASH_TYPE_IP_EX (1 << 6)
+#define VIRTIO_NET_RSS_HASH_TYPE_TCP_EX (1 << 7)
+#define VIRTIO_NET_RSS_HASH_TYPE_UDP_EX (1 << 8)
+
struct virtio_net_config {
/* The config defining mac address (if VIRTIO_NET_F_MAC) */
__u8 mac[ETH_ALEN];
/* See VIRTIO_NET_F_STATUS and VIRTIO_NET_S_* above */
- __u16 status;
+ __virtio16 status;
/* Maximum number of each of transmit and receive queues;
* see VIRTIO_NET_F_MQ and VIRTIO_NET_CTRL_MQ.
* Legal values are between 1 and 0x8000
*/
- __u16 max_virtqueue_pairs;
+ __virtio16 max_virtqueue_pairs;
/* Default maximum transmit unit advice */
- __u16 mtu;
+ __virtio16 mtu;
/*
* speed, in units of 1Mb. All values 0 to INT_MAX are legal.
* Any other value stands for unknown.
*/
- __u32 speed;
+ __le32 speed;
/*
* 0x00 - half duplex
* 0x01 - full duplex
* Any other value stands for unknown.
*/
__u8 duplex;
+ /* maximum size of RSS key */
+ __u8 rss_max_key_size;
+ /* maximum number of indirection table entries */
+ __le16 rss_max_indirection_table_length;
+ /* bitmask of supported VIRTIO_NET_RSS_HASH_ types */
+ __le32 supported_hash_types;
} __attribute__((packed));
/*
@@ -104,6 +124,7 @@
struct virtio_net_hdr_v1 {
#define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 /* Use csum_start, csum_offset */
#define VIRTIO_NET_HDR_F_DATA_VALID 2 /* Csum is valid */
+#define VIRTIO_NET_HDR_F_RSC_INFO 4 /* rsc info in csum_ fields */
__u8 flags;
#define VIRTIO_NET_HDR_GSO_NONE 0 /* Not a GSO frame */
#define VIRTIO_NET_HDR_GSO_TCPV4 1 /* GSO frame, IPv4 TCP (TSO) */
@@ -113,9 +134,44 @@
__u8 gso_type;
__virtio16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */
__virtio16 gso_size; /* Bytes to append to hdr_len per frame */
- __virtio16 csum_start; /* Position to start checksumming from */
- __virtio16 csum_offset; /* Offset after that to place checksum */
+ union {
+ struct {
+ __virtio16 csum_start;
+ __virtio16 csum_offset;
+ };
+ /* Checksum calculation */
+ struct {
+ /* Position to start checksumming from */
+ __virtio16 start;
+ /* Offset after that to place checksum */
+ __virtio16 offset;
+ } csum;
+ /* Receive Segment Coalescing */
+ struct {
+ /* Number of coalesced segments */
+ __le16 segments;
+ /* Number of duplicated acks */
+ __le16 dup_acks;
+ } rsc;
+ };
__virtio16 num_buffers; /* Number of merged rx buffers */
+};
+
+struct virtio_net_hdr_v1_hash {
+ struct virtio_net_hdr_v1 hdr;
+ __le32 hash_value;
+#define VIRTIO_NET_HASH_REPORT_NONE 0
+#define VIRTIO_NET_HASH_REPORT_IPv4 1
+#define VIRTIO_NET_HASH_REPORT_TCPv4 2
+#define VIRTIO_NET_HASH_REPORT_UDPv4 3
+#define VIRTIO_NET_HASH_REPORT_IPv6 4
+#define VIRTIO_NET_HASH_REPORT_TCPv6 5
+#define VIRTIO_NET_HASH_REPORT_UDPv6 6
+#define VIRTIO_NET_HASH_REPORT_IPv6_EX 7
+#define VIRTIO_NET_HASH_REPORT_TCPv6_EX 8
+#define VIRTIO_NET_HASH_REPORT_UDPv6_EX 9
+ __le16 hash_report;
+ __le16 padding;
};
#ifndef VIRTIO_NET_NO_LEGACY
@@ -228,7 +284,9 @@
/*
* Control Receive Flow Steering
- *
+ */
+#define VIRTIO_NET_CTRL_MQ 4
+/*
* The command VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET
* enables Receive Flow Steering, specifying the number of the transmit and
* receive queues that will be used. After the command is consumed and acked by
@@ -241,12 +299,48 @@
__virtio16 virtqueue_pairs;
};
-#define VIRTIO_NET_CTRL_MQ 4
#define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET 0
#define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1
#define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000
/*
+ * The command VIRTIO_NET_CTRL_MQ_RSS_CONFIG has the same effect as
+ * VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET does and additionally configures
+ * the receive steering to use a hash calculated for incoming packet
+ * to decide on receive virtqueue to place the packet. The command
+ * also provides parameters to calculate a hash and receive virtqueue.
+ */
+struct virtio_net_rss_config {
+ __le32 hash_types;
+ __le16 indirection_table_mask;
+ __le16 unclassified_queue;
+ __le16 indirection_table[1/* + indirection_table_mask */];
+ __le16 max_tx_vq;
+ __u8 hash_key_length;
+ __u8 hash_key_data[/* hash_key_length */];
+};
+
+ #define VIRTIO_NET_CTRL_MQ_RSS_CONFIG 1
+
+/*
+ * The command VIRTIO_NET_CTRL_MQ_HASH_CONFIG requests the device
+ * to include in the virtio header of the packet the value of the
+ * calculated hash and the report type of hash. It also provides
+ * parameters for hash calculation. The command requires feature
+ * VIRTIO_NET_F_HASH_REPORT to be negotiated to extend the
+ * layout of virtio header as defined in virtio_net_hdr_v1_hash.
+ */
+struct virtio_net_hash_config {
+ __le32 hash_types;
+ /* for compatibility with virtio_net_rss_config */
+ __le16 reserved[4];
+ __u8 hash_key_length;
+ __u8 hash_key_data[/* hash_key_length */];
+};
+
+ #define VIRTIO_NET_CTRL_MQ_HASH_CONFIG 2
+
+/*
* Control network offloads
*
* Reconfigures the network offloads that Guest can handle.
--
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