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net: convert tap to NetClientInfo 

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Mark McLoughlin 2009-11-25 18:49:04 +00:00 committed by Anthony Liguori
parent 5096fae3fd
commit 3e35ba93ec
1 changed files with 45 additions and 37 deletions
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82
net/tap.c
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@ -47,7 +47,7 @@
#define TAP_BUFSIZE (4096 + 65536)
typedef struct TAPState {
VLANClientState *vc;
VLANClientState nc;
int fd;
char down_script[1024];
char down_script_arg[128];
@ -92,7 +92,7 @@ static void tap_writable(void *opaque)
tap_write_poll(s, 0);
qemu_flush_queued_packets(s->vc);
qemu_flush_queued_packets(&s->nc);
}
static ssize_t tap_write_packet(TAPState *s, const struct iovec *iov, int iovcnt)
@ -111,10 +111,10 @@ static ssize_t tap_write_packet(TAPState *s, const struct iovec *iov, int iovcnt
return len;
}
static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
static ssize_t tap_receive_iov(VLANClientState *nc, const struct iovec *iov,
int iovcnt)
{
TAPState *s = vc->opaque;
TAPState *s = DO_UPCAST(TAPState, nc, nc);
const struct iovec *iovp = iov;
struct iovec iov_copy[iovcnt + 1];
struct virtio_net_hdr hdr = { 0, };
@ -130,9 +130,9 @@ static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
return tap_write_packet(s, iovp, iovcnt);
}
static ssize_t tap_receive_raw(VLANClientState *vc, const uint8_t *buf, size_t size)
static ssize_t tap_receive_raw(VLANClientState *nc, const uint8_t *buf, size_t size)
{
TAPState *s = vc->opaque;
TAPState *s = DO_UPCAST(TAPState, nc, nc);
struct iovec iov[2];
int iovcnt = 0;
struct virtio_net_hdr hdr = { 0, };
@ -150,13 +150,13 @@ static ssize_t tap_receive_raw(VLANClientState *vc, const uint8_t *buf, size_t s
return tap_write_packet(s, iov, iovcnt);
}
static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
static ssize_t tap_receive(VLANClientState *nc, const uint8_t *buf, size_t size)
{
TAPState *s = vc->opaque;
TAPState *s = DO_UPCAST(TAPState, nc, nc);
struct iovec iov[1];
if (s->has_vnet_hdr && !s->using_vnet_hdr) {
return tap_receive_raw(vc, buf, size);
return tap_receive_raw(nc, buf, size);
}
iov[0].iov_base = (char *)buf;
@ -169,7 +169,7 @@ static int tap_can_send(void *opaque)
{
TAPState *s = opaque;
return qemu_can_send_packet(s->vc);
return qemu_can_send_packet(&s->nc);
}
#ifndef __sun__
@ -179,9 +179,9 @@ ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
}
#endif
static void tap_send_completed(VLANClientState *vc, ssize_t len)
static void tap_send_completed(VLANClientState *nc, ssize_t len)
{
TAPState *s = vc->opaque;
TAPState *s = DO_UPCAST(TAPState, nc, nc);
tap_read_poll(s, 1);
}
@ -203,56 +203,56 @@ static void tap_send(void *opaque)
size -= sizeof(struct virtio_net_hdr);
}
size = qemu_send_packet_async(s->vc, buf, size, tap_send_completed);
size = qemu_send_packet_async(&s->nc, buf, size, tap_send_completed);
if (size == 0) {
tap_read_poll(s, 0);
}
} while (size > 0 && qemu_can_send_packet(s->vc));
} while (size > 0 && qemu_can_send_packet(&s->nc));
}
int tap_has_ufo(VLANClientState *vc)
int tap_has_ufo(VLANClientState *nc)
{
TAPState *s = vc->opaque;
TAPState *s = DO_UPCAST(TAPState, nc, nc);
assert(vc->type == NET_CLIENT_TYPE_TAP);
assert(nc->type == NET_CLIENT_TYPE_TAP);
return s->has_ufo;
}
int tap_has_vnet_hdr(VLANClientState *vc)
int tap_has_vnet_hdr(VLANClientState *nc)
{
TAPState *s = vc->opaque;
TAPState *s = DO_UPCAST(TAPState, nc, nc);
assert(vc->type == NET_CLIENT_TYPE_TAP);
assert(nc->type == NET_CLIENT_TYPE_TAP);
return s->has_vnet_hdr;
}
void tap_using_vnet_hdr(VLANClientState *vc, int using_vnet_hdr)
void tap_using_vnet_hdr(VLANClientState *nc, int using_vnet_hdr)
{
TAPState *s = vc->opaque;
TAPState *s = DO_UPCAST(TAPState, nc, nc);
using_vnet_hdr = using_vnet_hdr != 0;
assert(vc->type == NET_CLIENT_TYPE_TAP);
assert(nc->type == NET_CLIENT_TYPE_TAP);
assert(s->has_vnet_hdr == using_vnet_hdr);
s->using_vnet_hdr = using_vnet_hdr;
}
void tap_set_offload(VLANClientState *vc, int csum, int tso4,
void tap_set_offload(VLANClientState *nc, int csum, int tso4,
int tso6, int ecn, int ufo)
{
TAPState *s = vc->opaque;
TAPState *s = DO_UPCAST(TAPState, nc, nc);
return tap_fd_set_offload(s->fd, csum, tso4, tso6, ecn, ufo);
}
static void tap_cleanup(VLANClientState *vc)
static void tap_cleanup(VLANClientState *nc)
{
TAPState *s = vc->opaque;
TAPState *s = DO_UPCAST(TAPState, nc, nc);
qemu_purge_queued_packets(vc);
qemu_purge_queued_packets(nc);
if (s->down_script[0])
launch_script(s->down_script, s->down_script_arg, s->fd);
@ -260,29 +260,37 @@ static void tap_cleanup(VLANClientState *vc)
tap_read_poll(s, 0);
tap_write_poll(s, 0);
close(s->fd);
qemu_free(s);
}
/* fd support */
static NetClientInfo net_tap_info = {
.type = NET_CLIENT_TYPE_TAP,
.size = sizeof(TAPState),
.receive = tap_receive,
.receive_raw = tap_receive_raw,
.receive_iov = tap_receive_iov,
.cleanup = tap_cleanup,
};
static TAPState *net_tap_fd_init(VLANState *vlan,
const char *model,
const char *name,
int fd,
int vnet_hdr)
{
VLANClientState *nc;
TAPState *s;
s = qemu_mallocz(sizeof(TAPState));
nc = qemu_new_net_client(&net_tap_info, vlan, NULL, model, name);
s = DO_UPCAST(TAPState, nc, nc);
s->fd = fd;
s->has_vnet_hdr = vnet_hdr != 0;
s->using_vnet_hdr = 0;
s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_TAP,
vlan, NULL, model, name, NULL,
tap_receive, tap_receive_raw,
tap_receive_iov, tap_cleanup, s);
s->has_ufo = tap_probe_has_ufo(s->fd);
tap_set_offload(s->vc, 0, 0, 0, 0, 0);
tap_set_offload(&s->nc, 0, 0, 0, 0, 0);
tap_read_poll(s, 1);
return s;
}
@ -415,7 +423,7 @@ int net_init_tap(QemuOpts *opts, Monitor *mon, const char *name, VLANState *vlan
}
if (qemu_opt_get(opts, "fd")) {
snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
snprintf(s->nc.info_str, sizeof(s->nc.info_str), "fd=%d", fd);
} else {
const char *ifname, *script, *downscript;
@ -423,7 +431,7 @@ int net_init_tap(QemuOpts *opts, Monitor *mon, const char *name, VLANState *vlan
script = qemu_opt_get(opts, "script");
downscript = qemu_opt_get(opts, "downscript");
snprintf(s->vc->info_str, sizeof(s->vc->info_str),
snprintf(s->nc.info_str, sizeof(s->nc.info_str),
"ifname=%s,script=%s,downscript=%s",
ifname, script, downscript);