From 283c7c63f5c56c4d0340fb39093fb47e75cb122e Mon Sep 17 00:00:00 2001 From: Mark McLoughlin Date: Thu, 8 Oct 2009 19:58:30 +0100 Subject: net: allow NICs to be connected to netdevs 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 Signed-off-by: Anthony Liguori --- net.c | 35 +++++++++++++++++++++++++---------- 1 file changed, 25 insertions(+), 10 deletions(-) (limited to 'net.c') diff --git a/net.c b/net.c index 3f997cc8e0..5d78f04e04 100644 --- a/net.c +++ b/net.c @@ -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); -- cgit v1.2.1