github/acrn-hypervisor
1
0
Fork 0
mirror of https://github.com/projectacrn/acrn-hypervisor.git synced 2025-06-21 05:02:24 +00:00
Code Issues Projects Releases Wiki Activity

virtio-heci: disconnect client when message buffer overflowed

Browse Source 
Firmware need to disconnect the client connection when host's message
overlow the receive buffer in firmware. We emulate this behavior in
backend service.

Signed-off-by: Liu Shuo <shuo.a.liu@intel.com>
Reviewed-by: Li Hao <hao.l.li@intel.com>
Reviewed-by: Wang Yu <yu1.wang@intel.com>
Reviewed-by: Zhao, Yakui <yakui.zhao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Liu Shuo 2018-04-03 10:33:33 +08:00 committed by Jack Ren
parent 33e84efef9
commit d9545abefb
1 changed files with 34 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
devicemodel/hw/pci/virtio/virtio_heci.c
View File

@ -557,6 +557,38 @@ virtio_heci_hbm_response(struct virtio_heci *vheci,
virtio_heci_client_put(vheci, client); virtio_heci_client_put(vheci, client);
} }
/*
* This function is intend to send HBM disconnection command to guest.
* Although the default name is for virtual, using vclient here for
* better understanding.
*/
static void
virtio_heci_disconnect_vclient(struct virtio_heci *vheci,
struct virtio_heci_client *client)
{
struct heci_msg_hdr hdr = {0};
struct heci_hbm_client_disconnect_req disconnect_req = {{0} };
struct virtio_heci_client *hbm_client;
disconnect_req.hbm_cmd.cmd = HECI_HBM_CLIENT_DISCONNECT;
disconnect_req.me_addr = client->client_id;
disconnect_req.host_addr = client->client_addr;
hbm_client = virtio_heci_get_hbm_client(vheci);
if (!hbm_client) {
DPRINTF(("vheci: HBM client get fail!!\r\n"));
return;
}
populate_heci_hdr(hbm_client, &hdr,
sizeof(struct heci_hbm_client_disconnect_req), 1);
DPRINTF(("vheci: DM -> UOS disconnect client[%d]!\r\n",
client->client_id));
virtio_heci_hbm_response(vheci, &hdr,
&disconnect_req, sizeof(disconnect_req));
virtio_heci_client_put(vheci, hbm_client);
}
static void static void
virtio_heci_hbm_handler(struct virtio_heci *vheci, void *data) virtio_heci_hbm_handler(struct virtio_heci *vheci, void *data)
{ {
@ -824,7 +856,8 @@ virtio_heci_proc_tx(struct virtio_heci *vheci, struct virtio_vq_info *vq)
DPRINTF(("vheci: TX: ME[%d]fd[%d] overflow " DPRINTF(("vheci: TX: ME[%d]fd[%d] overflow "
"max_message_length in sendbuf!\n\r", "max_message_length in sendbuf!\n\r",
client->client_id, client->client_fd)); client->client_id, client->client_fd));
/* TODO: close the connection according to spec */ /* close the connection according to spec */
virtio_heci_disconnect_vclient(vheci, client);
goto out; goto out;
} }
/* copy buffer from virtqueue to send_buf */ /* copy buffer from virtqueue to send_buf */