From: Wanlong Gao <gaowanlong@cn.fujitsu.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: virtualization@lists.linux-foundation.org
Subject: Re: [PATCH 13/22] virtio_net: use virtqueue_add_sgs[] for command buffers.
Date: Tue, 19 Mar 2013 08:00:46 +0800 [thread overview]
Message-ID: <5147AAAE.7030309@cn.fujitsu.com> (raw)
In-Reply-To: <20130318111024.GA7595@redhat.com>
On 03/18/2013 07:10 PM, Michael S. Tsirkin wrote:
> On Mon, Mar 18, 2013 at 08:04:44PM +1030, Rusty Russell wrote:
>> It's a bit cleaner to hand multiple sgs, rather than one big one.
>>
>> Cc: "Michael S. Tsirkin" <mst@redhat.com>
>> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
>> ---
>> drivers/net/virtio_net.c | 50 +++++++++++++++++++++++-----------------------
>> 1 file changed, 25 insertions(+), 25 deletions(-)
>>
>> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
>> index 57ac4b0..f19865a 100644
>> --- a/drivers/net/virtio_net.c
>> +++ b/drivers/net/virtio_net.c
>> @@ -39,7 +39,6 @@ module_param(gso, bool, 0444);
>> #define MAX_PACKET_LEN (ETH_HLEN + VLAN_HLEN + ETH_DATA_LEN)
>> #define GOOD_COPY_LEN 128
>>
>> -#define VIRTNET_SEND_COMMAND_SG_MAX 2
>> #define VIRTNET_DRIVER_VERSION "1.0.0"
>>
>> struct virtnet_stats {
>> @@ -767,32 +766,34 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
>> * never fail unless improperly formated.
>> */
>> static bool virtnet_send_command(struct virtnet_info *vi, u8 class, u8 cmd,
>> - struct scatterlist *data, int out, int in)
>> + struct scatterlist *out,
>> + struct scatterlist *in)
>> {
>> - struct scatterlist *s, sg[VIRTNET_SEND_COMMAND_SG_MAX + 2];
>> + struct scatterlist *sgs[4], hdr, stat;
>> struct virtio_net_ctrl_hdr ctrl;
>> virtio_net_ctrl_ack status = ~0;
>> - unsigned int tmp;
>> - int i;
>> + unsigned out_num = 0, in_num = 0, tmp;
>>
>> /* Caller should know better */
>> - BUG_ON(!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ) ||
>> - (out + in > VIRTNET_SEND_COMMAND_SG_MAX));
>> -
>> - out++; /* Add header */
>> - in++; /* Add return status */
>> + BUG_ON(!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ));
>>
>> ctrl.class = class;
>> ctrl.cmd = cmd;
>> + /* Add header */
>> + sg_init_one(&hdr, &ctrl, sizeof(ctrl));
>> + sgs[out_num++] = &hdr;
>>
>> - sg_init_table(sg, out + in);
>> + if (out)
>> + sgs[out_num++] = out;
>> + if (in)
>> + sgs[out_num + in_num++] = in;
>>
>> - sg_set_buf(&sg[0], &ctrl, sizeof(ctrl));
>> - for_each_sg(data, s, out + in - 2, i)
>> - sg_set_buf(&sg[i + 1], sg_virt(s), s->length);
>> - sg_set_buf(&sg[out + in - 1], &status, sizeof(status));
>> + /* Add return status. */
>> + sg_init_one(&stat, &status, sizeof(status));
>> + sgs[out_num + in_num++] = &hdr;
>
> Should be &stat?
Good catch!!!
This is why I met the error message here:
[ 9.914123] net eth0: Failed to disable promisc mode.
[ 9.914958] net eth0: Failed to disable allmulti mode.
[ 9.915778] net eth0: Failed to set MAC fitler table.
[ 9.916564] net eth0: Failed to disable promisc mode.
[ 9.917322] net eth0: Failed to disable allmulti mode.
[ 9.918095] net eth0: Failed to set MAC fitler table.
[ 9.918876] net eth0: Failed to disable promisc mode.
[ 9.919636] net eth0: Failed to disable allmulti mode.
[ 9.920403] net eth0: Failed to set MAC fitler table.
[ 9.921183] net eth0: Failed to disable promisc mode.
[ 9.921921] net eth0: Failed to disable allmulti mode.
[ 9.922680] net eth0: Failed to set MAC fitler table.
[ 11.943884] net eth0: Failed to disable promisc mode.
[ 11.945460] net eth0: Failed to disable allmulti mode.
[ 11.946987] net eth0: Failed to set MAC fitler table.
network[503]: Bringing up interface eth0: [ OK ]
[ 12.242277] net eth0: Failed to disable promisc mode.
[ 12.243081] net eth0: Failed to disable allmulti mode.
[ 12.243824] net eth0: Failed to set MAC fitler table.
With &stat now, it has gone.
Tested-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
Regards,
Wanlong Gao
>
> Also
> BUG_ON(out_num + in_num > ARRAY_SIZE(sgs))
> probably a good idea?
>
>>
>> - BUG_ON(virtqueue_add_buf(vi->cvq, sg, out, in, vi, GFP_ATOMIC) < 0);
>> + BUG_ON(virtqueue_add_sgs(vi->cvq, sgs, out_num, in_num, vi, GFP_ATOMIC)
>> + < 0);
>>
>> virtqueue_kick(vi->cvq);
>>
>> @@ -821,7 +822,7 @@ static int virtnet_set_mac_address(struct net_device *dev, void *p)
>> sg_init_one(&sg, addr->sa_data, dev->addr_len);
>> if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_MAC,
>> VIRTIO_NET_CTRL_MAC_ADDR_SET,
>> - &sg, 1, 0)) {
>> + &sg, NULL)) {
>> dev_warn(&vdev->dev,
>> "Failed to set mac address by vq command.\n");
>> return -EINVAL;
>> @@ -889,8 +890,7 @@ static void virtnet_ack_link_announce(struct virtnet_info *vi)
>> {
>> rtnl_lock();
>> if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_ANNOUNCE,
>> - VIRTIO_NET_CTRL_ANNOUNCE_ACK, NULL,
>> - 0, 0))
>> + VIRTIO_NET_CTRL_ANNOUNCE_ACK, NULL, NULL))
>> dev_warn(&vi->dev->dev, "Failed to ack link announce.\n");
>> rtnl_unlock();
>> }
>> @@ -908,7 +908,7 @@ static int virtnet_set_queues(struct virtnet_info *vi, u16 queue_pairs)
>> sg_init_one(&sg, &s, sizeof(s));
>>
>> if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_MQ,
>> - VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET, &sg, 1, 0)){
>> + VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET, &sg, NULL)) {
>> dev_warn(&dev->dev, "Fail to set num of queue pairs to %d\n",
>> queue_pairs);
>> return -EINVAL;
>> @@ -955,7 +955,7 @@ static void virtnet_set_rx_mode(struct net_device *dev)
>>
>> if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_RX,
>> VIRTIO_NET_CTRL_RX_PROMISC,
>> - sg, 1, 0))
>> + sg, NULL))
>> dev_warn(&dev->dev, "Failed to %sable promisc mode.\n",
>> promisc ? "en" : "dis");
>>
>> @@ -963,7 +963,7 @@ static void virtnet_set_rx_mode(struct net_device *dev)
>>
>> if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_RX,
>> VIRTIO_NET_CTRL_RX_ALLMULTI,
>> - sg, 1, 0))
>> + sg, NULL))
>> dev_warn(&dev->dev, "Failed to %sable allmulti mode.\n",
>> allmulti ? "en" : "dis");
>>
>> @@ -1000,7 +1000,7 @@ static void virtnet_set_rx_mode(struct net_device *dev)
>>
>> if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_MAC,
>> VIRTIO_NET_CTRL_MAC_TABLE_SET,
>> - sg, 2, 0))
>> + sg, NULL))
>> dev_warn(&dev->dev, "Failed to set MAC fitler table.\n");
>>
>> kfree(buf);
>> @@ -1014,7 +1014,7 @@ static int virtnet_vlan_rx_add_vid(struct net_device *dev, u16 vid)
>> sg_init_one(&sg, &vid, sizeof(vid));
>>
>> if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_VLAN,
>> - VIRTIO_NET_CTRL_VLAN_ADD, &sg, 1, 0))
>> + VIRTIO_NET_CTRL_VLAN_ADD, &sg, NULL))
>> dev_warn(&dev->dev, "Failed to add VLAN ID %d.\n", vid);
>> return 0;
>> }
>> @@ -1027,7 +1027,7 @@ static int virtnet_vlan_rx_kill_vid(struct net_device *dev, u16 vid)
>> sg_init_one(&sg, &vid, sizeof(vid));
>>
>> if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_VLAN,
>> - VIRTIO_NET_CTRL_VLAN_DEL, &sg, 1, 0))
>> + VIRTIO_NET_CTRL_VLAN_DEL, &sg, NULL))
>> dev_warn(&dev->dev, "Failed to kill VLAN ID %d.\n", vid);
>> return 0;
>> }
>> --
>> 1.7.10.4
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> Virtualization@lists.linux-foundation.org
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>
next prev parent reply other threads:[~2013-03-19 0:00 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-18 9:34 [PATCH 00/22] virtqueue_add_sgs, virtqueue_add_outbuf, virtqueue_add_inbuf Rusty Russell
2013-03-18 9:34 ` [PATCH 01/22] scatterlist: introduce sg_unmark_end Rusty Russell
2013-03-18 9:34 ` [PATCH 02/22] virtio_ring: virtqueue_add_sgs, to add multiple sgs Rusty Russell
2013-03-18 9:34 ` [PATCH 03/22] virtio_ring: don't count elements twice for add_buf path Rusty Russell
2013-03-18 9:34 ` [PATCH 04/22] virtio_ring: inline internal vring functions more aggressively Rusty Russell
2013-03-18 9:34 ` [PATCH 05/22] virtio_ring: virtqueue_add_outbuf / virtqueue_add_inbuf Rusty Russell
2013-03-18 9:34 ` [PATCH 06/22] tools/virtio: make vringh_test use inbuf/outbuf Rusty Russell
2013-03-18 9:34 ` [PATCH 07/22] virtio-blk: reorganize virtblk_add_req Rusty Russell
2013-03-18 9:34 ` [PATCH 08/22] virtio-blk: use virtqueue_add_sgs on bio path Rusty Russell
2013-03-18 9:34 ` [PATCH 09/22] virtio-blk: use virtqueue_add_sgs on req path Rusty Russell
2013-03-18 9:34 ` [PATCH 10/22] virtio_blk: remove nents member Rusty Russell
2013-03-18 9:34 ` [PATCH 11/22] virtio-scsi: use virtqueue_add_sgs for command buffers Rusty Russell
2013-03-19 6:51 ` Asias He
2013-03-19 9:48 ` [PATCH V2 " Wanlong Gao
2013-03-19 10:35 ` Paolo Bonzini
2013-03-20 0:35 ` Rusty Russell
2013-03-20 4:43 ` Asias He
2013-03-18 9:34 ` [PATCH 12/22] virtio_scsi: use virtqueue_add_inbuf() for virtscsi_kick_event Rusty Russell
2013-03-20 1:19 ` Asias He
2013-03-18 9:34 ` [PATCH 13/22] virtio_net: use virtqueue_add_sgs[] for command buffers Rusty Russell
2013-03-18 11:10 ` Michael S. Tsirkin
2013-03-18 23:47 ` Rusty Russell
2013-03-19 0:00 ` Wanlong Gao [this message]
2013-03-18 9:34 ` [PATCH 14/22] virtio_net: use simplified virtqueue accessors Rusty Russell
2013-03-20 1:20 ` Asias He
2013-03-18 9:34 ` [PATCH 15/22] virtio_rng: " Rusty Russell
2013-03-20 1:18 ` Asias He
2013-03-18 9:34 ` [PATCH 16/22] virtio_console: " Rusty Russell
2013-03-18 10:10 ` Amit Shah
2013-03-18 9:34 ` [PATCH 17/22] caif_virtio: " Rusty Russell
2013-03-18 9:34 ` [PATCH 18/22] virtio_rpmsg_bus: " Rusty Russell
2013-03-20 10:08 ` Ohad Ben-Cohen
2013-03-20 23:28 ` Rusty Russell
2013-03-18 9:34 ` [PATCH 19/22] virtio_balloon: " Rusty Russell
2013-03-18 9:34 ` [PATCH 20/22] 9p/trans_virtio.c: use virtio_add_sgs[] Rusty Russell
2013-03-20 4:53 ` Rusty Russell
2013-03-18 9:34 ` [PATCH 21/22] tools/virtio: remove virtqueue_add_buf() from tests Rusty Russell
2013-03-18 9:34 ` [PATCH 22/22] virtio: remove virtqueue_add_buf() Rusty Russell
2013-03-20 5:20 ` [PATCH 00/22] virtqueue_add_sgs, virtqueue_add_outbuf, virtqueue_add_inbuf Rusty Russell
2013-03-20 6:01 ` Asias He
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