Separating the APIs of cq into a file.
Signed-off-by: Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx>
---
drivers/net/virtio/Makefile | 2 +-
drivers/net/virtio/virtnet.c | 299 +-----------------------------
drivers/net/virtio/virtnet_ctrl.c | 272 +++++++++++++++++++++++++++
drivers/net/virtio/virtnet_ctrl.h | 45 +++++
4 files changed, 319 insertions(+), 299 deletions(-)
create mode 100644 drivers/net/virtio/virtnet_ctrl.c
create mode 100644 drivers/net/virtio/virtnet_ctrl.h
diff --git a/drivers/net/virtio/Makefile b/drivers/net/virtio/Makefile
index 3bef2b51876c..a2d80f95c921 100644
--- a/drivers/net/virtio/Makefile
+++ b/drivers/net/virtio/Makefile
@@ -5,4 +5,4 @@
obj-$(CONFIG_VIRTIO_NET) += virtio_net.o
-virtio_net-y := virtnet.o virtnet_common.o
+virtio_net-y := virtnet.o virtnet_common.o virtnet_ctrl.o
diff --git a/drivers/net/virtio/virtnet.c b/drivers/net/virtio/virtnet.c
index 4a3b5efb674e..84b90333dc77 100644
--- a/drivers/net/virtio/virtnet.c
+++ b/drivers/net/virtio/virtnet.c
@@ -22,6 +22,7 @@
#include "virtnet.h"
#include "virtnet_common.h"
+#include "virtnet_ctrl.h"
static int napi_weight = NAPI_POLL_WEIGHT;
module_param(napi_weight, int, 0444);
@@ -84,36 +85,6 @@ static const struct virtnet_stat_desc virtnet_rq_stats_desc[] = {
#define VIRTNET_SQ_STATS_LEN ARRAY_SIZE(virtnet_sq_stats_desc)
#define VIRTNET_RQ_STATS_LEN ARRAY_SIZE(virtnet_rq_stats_desc)
-/* 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 virtio_net_ctrl_mq mq;
- u8 promisc;
- u8 allmulti;
- __virtio16 vid;
- __virtio64 offloads;
- struct virtio_net_ctrl_rss rss;
-};
-
struct padded_vnet_hdr {
struct virtio_net_hdr_v1_hash hdr;
/*
@@ -1932,73 +1903,6 @@ static int virtnet_tx_resize(struct virtnet_info *vi,
return err;
}
-/*
- * Send command via the control virtqueue and check status. Commands
- * supported by the hypervisor, as indicated by feature bits, should
- * never fail unless improperly formatted.
- */
-static bool virtnet_send_command(struct virtnet_info *vi, u8 class, u8 cmd,
- struct scatterlist *out)
-{
- struct scatterlist *sgs[4], hdr, stat;
- unsigned out_num = 0, tmp;
- int ret;
-
- /* Caller should know better */
- BUG_ON(!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ));
-
- vi->ctrl->status = ~0;
- vi->ctrl->hdr.class = class;
- vi->ctrl->hdr.cmd = cmd;
- /* Add header */
- sg_init_one(&hdr, &vi->ctrl->hdr, sizeof(vi->ctrl->hdr));
- sgs[out_num++] = &hdr;
-
- if (out)
- sgs[out_num++] = out;
-
- /* Add return status. */
- sg_init_one(&stat, &vi->ctrl->status, sizeof(vi->ctrl->status));
- sgs[out_num] = &stat;
-
- BUG_ON(out_num + 1 > ARRAY_SIZE(sgs));
- ret = virtqueue_add_sgs(vi->cvq, sgs, out_num, 1, vi, GFP_ATOMIC);
- if (ret < 0) {
- dev_warn(&vi->vdev->dev,
- "Failed to add sgs for command vq: %d\n.", ret);
- return false;
- }
-
- if (unlikely(!virtqueue_kick(vi->cvq)))
- return vi->ctrl->status == VIRTIO_NET_OK;
-
- /* Spin for a response, the kick causes an ioport write, trapping
- * into the hypervisor, so the request should be handled immediately.
- */
- while (!virtqueue_get_buf(vi->cvq, &tmp) &&
- !virtqueue_is_broken(vi->cvq))
- cpu_relax();
-
- return vi->ctrl->status == VIRTIO_NET_OK;
-}
-
-static int virtnet_ctrl_set_mac_address(struct virtnet_info *vi, const void *addr, int len)
-{
- struct virtio_device *vdev = vi->vdev;
- struct scatterlist sg;
-
- sg_init_one(&sg, addr, len);
-
- if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_MAC,
- VIRTIO_NET_CTRL_MAC_ADDR_SET, &sg)) {
- dev_warn(&vdev->dev,
- "Failed to set mac address by vq command.\n");
- return -EINVAL;
- }
-
- return 0;
-}
-
static int virtnet_set_mac_address(struct net_device *dev, void *p)
{
struct virtnet_info *vi = netdev_priv(dev);
@@ -2081,24 +1985,6 @@ static void virtnet_stats(struct net_device *dev,
tot->rx_frame_errors = dev->stats.rx_frame_errors;
}
-static void virtnet_ack_link_announce(struct virtnet_info *vi)
-{
- if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_ANNOUNCE,
- VIRTIO_NET_CTRL_ANNOUNCE_ACK, NULL))
- dev_warn(&vi->dev->dev, "Failed to ack link announce.\n");
-}
-
-static int virtnet_ctrl_set_queues(struct virtnet_info *vi, u16 queue_pairs)
-{
- struct scatterlist sg;
-
- vi->ctrl->mq.virtqueue_pairs = cpu_to_virtio16(vi->vdev, queue_pairs);
- sg_init_one(&sg, &vi->ctrl->mq, sizeof(vi->ctrl->mq));
-
- return virtnet_send_command(vi, VIRTIO_NET_CTRL_MQ,
- VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET, &sg);
-}
-
static int _virtnet_set_queues(struct virtnet_info *vi, u16 queue_pairs)
{
struct net_device *dev = vi->dev;
@@ -2149,106 +2035,6 @@ static int virtnet_close(struct net_device *dev)
return 0;
}
-static void virtnet_set_rx_mode(struct net_device *dev)
-{
- struct virtnet_info *vi = netdev_priv(dev);
- struct scatterlist sg[2];
- struct virtio_net_ctrl_mac *mac_data;
- struct netdev_hw_addr *ha;
- int uc_count;
- int mc_count;
- void *buf;
- int i;
-
- /* We can't dynamically set ndo_set_rx_mode, so return gracefully */
- if (!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_RX))
- return;
-
- vi->ctrl->promisc = ((dev->flags & IFF_PROMISC) != 0);
- vi->ctrl->allmulti = ((dev->flags & IFF_ALLMULTI) != 0);
-
- sg_init_one(sg, &vi->ctrl->promisc, sizeof(vi->ctrl->promisc));
-
- if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_RX,
- VIRTIO_NET_CTRL_RX_PROMISC, sg))
- dev_warn(&dev->dev, "Failed to %sable promisc mode.\n",
- vi->ctrl->promisc ? "en" : "dis");
-
- sg_init_one(sg, &vi->ctrl->allmulti, sizeof(vi->ctrl->allmulti));
-
- if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_RX,
- VIRTIO_NET_CTRL_RX_ALLMULTI, sg))
- dev_warn(&dev->dev, "Failed to %sable allmulti mode.\n",
- vi->ctrl->allmulti ? "en" : "dis");
-
- uc_count = netdev_uc_count(dev);
- mc_count = netdev_mc_count(dev);
- /* MAC filter - use one buffer for both lists */
- buf = kzalloc(((uc_count + mc_count) * ETH_ALEN) +
- (2 * sizeof(mac_data->entries)), GFP_ATOMIC);
- mac_data = buf;
- if (!buf)
- return;
-
- sg_init_table(sg, 2);
-
- /* Store the unicast list and count in the front of the buffer */
- mac_data->entries = cpu_to_virtio32(vi->vdev, uc_count);
- i = 0;
- netdev_for_each_uc_addr(ha, dev)
- memcpy(&mac_data->macs[i++][0], ha->addr, ETH_ALEN);
-
- sg_set_buf(&sg[0], mac_data,
- sizeof(mac_data->entries) + (uc_count * ETH_ALEN));
-
- /* multicast list and count fill the end */
- mac_data = (void *)&mac_data->macs[uc_count][0];
-
- mac_data->entries = cpu_to_virtio32(vi->vdev, mc_count);
- i = 0;
- netdev_for_each_mc_addr(ha, dev)
- memcpy(&mac_data->macs[i++][0], ha->addr, ETH_ALEN);
-
- sg_set_buf(&sg[1], mac_data,
- sizeof(mac_data->entries) + (mc_count * ETH_ALEN));
-
- if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_MAC,
- VIRTIO_NET_CTRL_MAC_TABLE_SET, sg))
- dev_warn(&dev->dev, "Failed to set MAC filter table.\n");
-
- kfree(buf);
-}
-
-static int virtnet_vlan_rx_add_vid(struct net_device *dev,
- __be16 proto, u16 vid)
-{
- struct virtnet_info *vi = netdev_priv(dev);
- struct scatterlist sg;
-
- vi->ctrl->vid = cpu_to_virtio16(vi->vdev, vid);
- sg_init_one(&sg, &vi->ctrl->vid, sizeof(vi->ctrl->vid));
-
- if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_VLAN,
- VIRTIO_NET_CTRL_VLAN_ADD, &sg))
- dev_warn(&dev->dev, "Failed to add VLAN ID %d.\n", vid);
- return 0;
-}
-
-static int virtnet_vlan_rx_kill_vid(struct net_device *dev,
- __be16 proto, u16 vid)
-{
- struct virtnet_info *vi = netdev_priv(dev);
- struct scatterlist sg;
-
- vi->ctrl->vid = cpu_to_virtio16(vi->vdev, vid);
- sg_init_one(&sg, &vi->ctrl->vid, sizeof(vi->ctrl->vid));
-
- if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_VLAN,
- VIRTIO_NET_CTRL_VLAN_DEL, &sg))
- dev_warn(&dev->dev, "Failed to kill VLAN ID %d.\n", vid);
- return 0;
-}
-
static void virtnet_get_ringparam(struct net_device *dev,
struct ethtool_ringparam *ring,
struct kernel_ethtool_ringparam *kernel_ring,
@@ -2309,37 +2095,6 @@ static int virtnet_set_ringparam(struct net_device *dev,
return 0;
}
-static bool virtnet_commit_rss_command(struct virtnet_info *vi)
-{
- struct net_device *dev = vi->dev;
- struct scatterlist sgs[4];
- unsigned int sg_buf_size;
-
- /* prepare sgs */
- sg_init_table(sgs, 4);
-
- sg_buf_size = offsetof(struct virtio_net_ctrl_rss, indirection_table);
- sg_set_buf(&sgs[0], &vi->ctrl->rss, sg_buf_size);
-
- sg_buf_size = sizeof(uint16_t) * (vi->ctrl->rss.indirection_table_mask + 1);
- sg_set_buf(&sgs[1], vi->ctrl->rss.indirection_table, sg_buf_size);
-
- sg_buf_size = offsetof(struct virtio_net_ctrl_rss, key)
- - offsetof(struct virtio_net_ctrl_rss, max_tx_vq);
- sg_set_buf(&sgs[2], &vi->ctrl->rss.max_tx_vq, sg_buf_size);
-
- sg_buf_size = vi->rss_key_size;
- sg_set_buf(&sgs[3], vi->ctrl->rss.key, sg_buf_size);
-
- if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_MQ,
- vi->has_rss ? VIRTIO_NET_CTRL_MQ_RSS_CONFIG
- : VIRTIO_NET_CTRL_MQ_HASH_CONFIG, sgs)) {
- dev_warn(&dev->dev, "VIRTIONET issue with committing RSS sgs\n");
- return false;
- }
- return true;
-}
-
static void virtnet_init_default_rss(struct virtnet_info *vi)
{
u32 indir_val = 0;
@@ -2636,42 +2391,6 @@ static int virtnet_get_link_ksettings(struct net_device *dev,
return 0;
}
-static int virtnet_send_notf_coal_cmds(struct virtnet_info *vi,
- struct ethtool_coalesce *ec)
-{
- struct scatterlist sgs_tx, sgs_rx;
- struct virtio_net_ctrl_coal_tx coal_tx;
- struct virtio_net_ctrl_coal_rx coal_rx;
-
- coal_tx.tx_usecs = cpu_to_le32(ec->tx_coalesce_usecs);
- coal_tx.tx_max_packets = cpu_to_le32(ec->tx_max_coalesced_frames);
- sg_init_one(&sgs_tx, &coal_tx, sizeof(coal_tx));
-
- if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_NOTF_COAL,
- VIRTIO_NET_CTRL_NOTF_COAL_TX_SET,
- &sgs_tx))
- return -EINVAL;
-
- /* Save parameters */
- vi->tx_usecs = ec->tx_coalesce_usecs;
- vi->tx_max_packets = ec->tx_max_coalesced_frames;
-
- coal_rx.rx_usecs = cpu_to_le32(ec->rx_coalesce_usecs);
- coal_rx.rx_max_packets = cpu_to_le32(ec->rx_max_coalesced_frames);
- sg_init_one(&sgs_rx, &coal_rx, sizeof(coal_rx));
-
- if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_NOTF_COAL,
- VIRTIO_NET_CTRL_NOTF_COAL_RX_SET,
- &sgs_rx))
- return -EINVAL;
-
- /* Save parameters */
- vi->rx_usecs = ec->rx_coalesce_usecs;
- vi->rx_max_packets = ec->rx_max_coalesced_frames;
-
- return 0;
-}
-
static int virtnet_coal_params_supported(struct ethtool_coalesce *ec)
{
/* usecs coalescing is supported only if VIRTIO_NET_F_NOTF_COAL
@@ -2922,22 +2641,6 @@ static int virtnet_restore_up(struct virtio_device *vdev)
return err;
}
-static int virtnet_set_guest_offloads(struct virtnet_info *vi, u64 offloads)
-{
- struct scatterlist sg;
- vi->ctrl->offloads = cpu_to_virtio64(vi->vdev, offloads);
-
- sg_init_one(&sg, &vi->ctrl->offloads, sizeof(vi->ctrl->offloads));
-
- if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_GUEST_OFFLOADS,
- VIRTIO_NET_CTRL_GUEST_OFFLOADS_SET, &sg)) {
- dev_warn(&vi->dev->dev, "Fail to set guest offload.\n");
- return -EINVAL;
- }
-
- return 0;
-}
-
static int virtnet_clear_guest_offloads(struct virtnet_info *vi)
{
u64 offloads = 0;
diff --git a/drivers/net/virtio/virtnet_ctrl.c b/drivers/net/virtio/virtnet_ctrl.c
new file mode 100644
index 000000000000..4b5ffa9eedd4
--- /dev/null
+++ b/drivers/net/virtio/virtnet_ctrl.c
@@ -0,0 +1,272 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+//
+#include <linux/netdevice.h>
+#include <linux/virtio_net.h>
+
+#include "virtnet.h"
+#include "virtnet_ctrl.h"
+
+/* Send command via the control virtqueue and check status. Commands
+ * supported by the hypervisor, as indicated by feature bits, should
+ * never fail unless improperly formatted.
+ */
+static bool virtnet_send_command(struct virtnet_info *vi, u8 class, u8 cmd,
+ struct scatterlist *out)
+{
+ struct scatterlist *sgs[4], hdr, stat;
+ unsigned int out_num = 0, tmp;
+ int ret;
+
+ /* Caller should know better */
+ BUG_ON(!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ));
+
+ vi->ctrl->status = ~0;
+ vi->ctrl->hdr.class = class;
+ vi->ctrl->hdr.cmd = cmd;
+ /* Add header */
+ sg_init_one(&hdr, &vi->ctrl->hdr, sizeof(vi->ctrl->hdr));
+ sgs[out_num++] = &hdr;
+
+ if (out)
+ sgs[out_num++] = out;
+
+ /* Add return status. */
+ sg_init_one(&stat, &vi->ctrl->status, sizeof(vi->ctrl->status));
+ sgs[out_num] = &stat;
+
+ BUG_ON(out_num + 1 > ARRAY_SIZE(sgs));
+ ret = virtqueue_add_sgs(vi->cvq, sgs, out_num, 1, vi, GFP_ATOMIC);
+ if (ret < 0) {
+ dev_warn(&vi->vdev->dev,
+ "Failed to add sgs for command vq: %d\n.", ret);
+ return false;
+ }
+
+ if (unlikely(!virtqueue_kick(vi->cvq)))
+ return vi->ctrl->status == VIRTIO_NET_OK;
+
+ /* Spin for a response, the kick causes an ioport write, trapping
+ * into the hypervisor, so the request should be handled immediately.
+ */
+ while (!virtqueue_get_buf(vi->cvq, &tmp) &&
+ !virtqueue_is_broken(vi->cvq))
+ cpu_relax();
+
+ return vi->ctrl->status == VIRTIO_NET_OK;
+}
+
+int virtnet_ctrl_set_mac_address(struct virtnet_info *vi, const void *addr, int len)
+{
+ struct virtio_device *vdev = vi->vdev;
+ struct scatterlist sg;
+
+ sg_init_one(&sg, addr, len);
+
+ if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_MAC,
+ VIRTIO_NET_CTRL_MAC_ADDR_SET, &sg)) {
+ dev_warn(&vdev->dev,
+ "Failed to set mac address by vq command.\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+void virtnet_ack_link_announce(struct virtnet_info *vi)
+{
+ if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_ANNOUNCE,
+ VIRTIO_NET_CTRL_ANNOUNCE_ACK, NULL))
+ dev_warn(&vi->dev->dev, "Failed to ack link announce.\n");
+}
+
+int virtnet_ctrl_set_queues(struct virtnet_info *vi, u16 queue_pairs)
+{
+ struct scatterlist sg;
+
+ vi->ctrl->mq.virtqueue_pairs = cpu_to_virtio16(vi->vdev, queue_pairs);
+ sg_init_one(&sg, &vi->ctrl->mq, sizeof(vi->ctrl->mq));
+
+ return virtnet_send_command(vi, VIRTIO_NET_CTRL_MQ,
+ VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET, &sg);
+}
+
+void virtnet_set_rx_mode(struct net_device *dev)
+{
+ struct virtnet_info *vi = netdev_priv(dev);
+ struct scatterlist sg[2];
+ struct virtio_net_ctrl_mac *mac_data;
+ struct netdev_hw_addr *ha;
+ int uc_count;
+ int mc_count;
+ void *buf;
+ int i;
+
+ /* We can't dynamically set ndo_set_rx_mode, so return gracefully */
+ if (!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_RX))
+ return;
+
+ vi->ctrl->promisc = ((dev->flags & IFF_PROMISC) != 0);
+ vi->ctrl->allmulti = ((dev->flags & IFF_ALLMULTI) != 0);
+
+ sg_init_one(sg, &vi->ctrl->promisc, sizeof(vi->ctrl->promisc));
+
+ if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_RX,
+ VIRTIO_NET_CTRL_RX_PROMISC, sg))
+ dev_warn(&dev->dev, "Failed to %sable promisc mode.\n",
+ vi->ctrl->promisc ? "en" : "dis");
+
+ sg_init_one(sg, &vi->ctrl->allmulti, sizeof(vi->ctrl->allmulti));
+
+ if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_RX,
+ VIRTIO_NET_CTRL_RX_ALLMULTI, sg))
+ dev_warn(&dev->dev, "Failed to %sable allmulti mode.\n",
+ vi->ctrl->allmulti ? "en" : "dis");
+
+ uc_count = netdev_uc_count(dev);
+ mc_count = netdev_mc_count(dev);
+ /* MAC filter - use one buffer for both lists */
+ buf = kzalloc(((uc_count + mc_count) * ETH_ALEN) +
+ (2 * sizeof(mac_data->entries)), GFP_ATOMIC);
+ mac_data = buf;
+ if (!buf)
+ return;
+
+ sg_init_table(sg, 2);
+
+ /* Store the unicast list and count in the front of the buffer */
+ mac_data->entries = cpu_to_virtio32(vi->vdev, uc_count);
+ i = 0;
+ netdev_for_each_uc_addr(ha, dev)
+ memcpy(&mac_data->macs[i++][0], ha->addr, ETH_ALEN);
+
+ sg_set_buf(&sg[0], mac_data,
+ sizeof(mac_data->entries) + (uc_count * ETH_ALEN));
+
+ /* multicast list and count fill the end */
+ mac_data = (void *)&mac_data->macs[uc_count][0];
+
+ mac_data->entries = cpu_to_virtio32(vi->vdev, mc_count);
+ i = 0;
+ netdev_for_each_mc_addr(ha, dev)
+ memcpy(&mac_data->macs[i++][0], ha->addr, ETH_ALEN);
+
+ sg_set_buf(&sg[1], mac_data,
+ sizeof(mac_data->entries) + (mc_count * ETH_ALEN));
+
+ if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_MAC,
+ VIRTIO_NET_CTRL_MAC_TABLE_SET, sg))
+ dev_warn(&dev->dev, "Failed to set MAC filter table.\n");
+
+ kfree(buf);
+}
+
+int virtnet_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
+{
+ struct virtnet_info *vi = netdev_priv(dev);
+ struct scatterlist sg;
+
+ vi->ctrl->vid = cpu_to_virtio16(vi->vdev, vid);
+ sg_init_one(&sg, &vi->ctrl->vid, sizeof(vi->ctrl->vid));
+
+ if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_VLAN,
+ VIRTIO_NET_CTRL_VLAN_ADD, &sg))
+ dev_warn(&dev->dev, "Failed to add VLAN ID %d.\n", vid);
+ return 0;
+}
+
+int virtnet_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
+{
+ struct virtnet_info *vi = netdev_priv(dev);
+ struct scatterlist sg;
+
+ vi->ctrl->vid = cpu_to_virtio16(vi->vdev, vid);
+ sg_init_one(&sg, &vi->ctrl->vid, sizeof(vi->ctrl->vid));
+
+ if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_VLAN,
+ VIRTIO_NET_CTRL_VLAN_DEL, &sg))
+ dev_warn(&dev->dev, "Failed to kill VLAN ID %d.\n", vid);
+ return 0;
+}
+
+bool virtnet_commit_rss_command(struct virtnet_info *vi)
+{
+ struct net_device *dev = vi->dev;
+ struct scatterlist sgs[4];
+ unsigned int sg_buf_size;
+
+ /* prepare sgs */
+ sg_init_table(sgs, 4);
+
+ sg_buf_size = offsetof(struct virtio_net_ctrl_rss, indirection_table);
+ sg_set_buf(&sgs[0], &vi->ctrl->rss, sg_buf_size);
+
+ sg_buf_size = sizeof(uint16_t) * (vi->ctrl->rss.indirection_table_mask + 1);
+ sg_set_buf(&sgs[1], vi->ctrl->rss.indirection_table, sg_buf_size);
+
+ sg_buf_size = offsetof(struct virtio_net_ctrl_rss, key)
+ - offsetof(struct virtio_net_ctrl_rss, max_tx_vq);
+ sg_set_buf(&sgs[2], &vi->ctrl->rss.max_tx_vq, sg_buf_size);
+
+ sg_buf_size = vi->rss_key_size;
+ sg_set_buf(&sgs[3], vi->ctrl->rss.key, sg_buf_size);
+
+ if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_MQ,
+ vi->has_rss ? VIRTIO_NET_CTRL_MQ_RSS_CONFIG
+ : VIRTIO_NET_CTRL_MQ_HASH_CONFIG, sgs)) {
+ dev_warn(&dev->dev, "VIRTIONET issue with committing RSS sgs\n");
+ return false;
+ }
+ return true;
+}
+
+int virtnet_send_notf_coal_cmds(struct virtnet_info *vi, struct ethtool_coalesce *ec)
+{
+ struct scatterlist sgs_tx, sgs_rx;
+ struct virtio_net_ctrl_coal_tx coal_tx;
+ struct virtio_net_ctrl_coal_rx coal_rx;
+
+ coal_tx.tx_usecs = cpu_to_le32(ec->tx_coalesce_usecs);
+ coal_tx.tx_max_packets = cpu_to_le32(ec->tx_max_coalesced_frames);
+ sg_init_one(&sgs_tx, &coal_tx, sizeof(coal_tx));
+
+ if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_NOTF_COAL,
+ VIRTIO_NET_CTRL_NOTF_COAL_TX_SET,
+ &sgs_tx))
+ return -EINVAL;
+
+ /* Save parameters */
+ vi->tx_usecs = ec->tx_coalesce_usecs;
+ vi->tx_max_packets = ec->tx_max_coalesced_frames;
+
+ coal_rx.rx_usecs = cpu_to_le32(ec->rx_coalesce_usecs);
+ coal_rx.rx_max_packets = cpu_to_le32(ec->rx_max_coalesced_frames);
+ sg_init_one(&sgs_rx, &coal_rx, sizeof(coal_rx));
+
+ if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_NOTF_COAL,
+ VIRTIO_NET_CTRL_NOTF_COAL_RX_SET,
+ &sgs_rx))
+ return -EINVAL;
+
+ /* Save parameters */
+ vi->rx_usecs = ec->rx_coalesce_usecs;
+ vi->rx_max_packets = ec->rx_max_coalesced_frames;
+
+ return 0;
+}
+
+int virtnet_set_guest_offloads(struct virtnet_info *vi, u64 offloads)
+{
+ struct scatterlist sg;
+ vi->ctrl->offloads = cpu_to_virtio64(vi->vdev, offloads);
+
+ sg_init_one(&sg, &vi->ctrl->offloads, sizeof(vi->ctrl->offloads));
+
+ if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_GUEST_OFFLOADS,
+ VIRTIO_NET_CTRL_GUEST_OFFLOADS_SET, &sg)) {
+ dev_warn(&vi->dev->dev, "Fail to set guest offload.\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
diff --git a/drivers/net/virtio/virtnet_ctrl.h b/drivers/net/virtio/virtnet_ctrl.h
new file mode 100644
index 000000000000..f5cd3099264b
--- /dev/null
+++ b/drivers/net/virtio/virtnet_ctrl.h
@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef __VIRTNET_CTRL_H__
+#define __VIRTNET_CTRL_H__
+
+/* 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 virtio_net_ctrl_mq mq;
+ u8 promisc;
+ u8 allmulti;
+ __virtio16 vid;
+ __virtio64 offloads;
+ struct virtio_net_ctrl_rss rss;
+};
+
+int virtnet_ctrl_set_mac_address(struct virtnet_info *vi, const void *addr, int len);
+void virtnet_ack_link_announce(struct virtnet_info *vi);
+int virtnet_ctrl_set_queues(struct virtnet_info *vi, u16 queue_pairs);
+void virtnet_set_rx_mode(struct net_device *dev);
+int virtnet_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid);
+int virtnet_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid);
+bool virtnet_commit_rss_command(struct virtnet_info *vi);
+int virtnet_send_notf_coal_cmds(struct virtnet_info *vi, struct ethtool_coalesce *ec);
+int virtnet_set_guest_offloads(struct virtnet_info *vi, u64 offloads);
+#endif
--
2.32.0.3.g01195cf9f
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