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net: allow NICs to be connected to netdevs

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Introduce a 'peer' member to VLANClientState as an alternative
to a vlan. The idea being that packets are transfered directly
from peer clients rather than going through a vlan.

Patchworks-ID: 35516
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Mark McLoughlin 2009-10-08 19:58:30 +01:00 • committed by Anthony Liguori
parent 5869c4d515
commit 283c7c63f5
10 changed files with 45 additions and 20 deletions
Download patch file Download diff file Expand all files Collapse all files

35
net.c
View file

@ -302,6 +302,7 @@ static char *assign_name(VLANClientState *vc1, const char *model)
}
VLANClientState *qemu_new_vlan_client(VLANState *vlan,
VLANClientState *peer,
const char *model,
const char *name,
NetCanReceive *can_receive,
@ -326,9 +327,14 @@ VLANClientState *qemu_new_vlan_client(VLANState *vlan,
vc->opaque = opaque;
if (vlan) {
assert(!peer);
vc->vlan = vlan;
QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next);
} else {
if (peer) {
vc->peer = peer;
peer->peer = vc;
}
QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next);
}
@ -341,6 +347,9 @@ void qemu_del_vlan_client(VLANClientState *vc)
QTAILQ_REMOVE(&vc->vlan->clients, vc, next);
} else {
QTAILQ_REMOVE(&non_vlan_clients, vc, next);
if (vc->peer) {
vc->peer->peer = NULL;
}
}
if (vc->cleanup) {
@ -866,7 +875,8 @@ static int net_slirp_init(VLANState *vlan, const char *model,
}
#endif
s->vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive, NULL,
s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
slirp_receive, NULL,
net_slirp_cleanup, s);
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
"net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
@ -1426,8 +1436,9 @@ static TAPState *net_tap_fd_init(VLANState *vlan,
s = qemu_mallocz(sizeof(TAPState));
s->fd = fd;
s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
tap_receive_iov, tap_cleanup, s);
s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
tap_receive, tap_receive_iov,
tap_cleanup, s);
tap_read_poll(s, 1);
snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
return s;
@ -1760,8 +1771,9 @@ static int net_vde_init(VLANState *vlan, const char *model,
free(s);
return -1;
}
s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
NULL, vde_cleanup, s);
s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
vde_receive, NULL,
vde_cleanup, s);
qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
sock, vde_datafd(s->vde));
@ -1999,8 +2011,9 @@ static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
s = qemu_mallocz(sizeof(NetSocketState));
s->fd = fd;
s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
NULL, net_socket_cleanup, s);
s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
net_socket_receive_dgram, NULL,
net_socket_cleanup, s);
qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
/* mcast: save bound address as dst */
@ -2027,8 +2040,9 @@ static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
NetSocketState *s;
s = qemu_mallocz(sizeof(NetSocketState));
s->fd = fd;
s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
NULL, net_socket_cleanup, s);
s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
net_socket_receive, NULL,
net_socket_cleanup, s);
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
"socket: fd=%d", fd);
if (is_connected) {
@ -2308,7 +2322,8 @@ static int net_dump_init(VLANState *vlan, const char *device,
return -1;
}
s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
s->pcap_vc = qemu_new_vlan_client(vlan, NULL, device, name, NULL,
dump_receive, NULL,
net_dump_cleanup, s);
snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
"dump to %s (len=%d)", filename, len);