* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include "hw.h"
#include "net.h"
+#include "net/checksum.h"
+#include "net/util.h"
#include "qemu-char.h"
#include "xen_backend.h"
struct netif_rx_sring *rxs;
netif_tx_back_ring_t tx_ring;
netif_rx_back_ring_t rx_ring;
- VLANClientState *vs;
+ NICConf conf;
+ NICState *nic;
};
/* ------------------------------------------------------------- */
resp->status = st;
#if 0
- if (txp->flags & NETTXF_extra_info)
- RING_GET_RESPONSE(&netdev->tx_ring, ++i)->status = NETIF_RSP_NULL;
+ if (txp->flags & NETTXF_extra_info) {
+ RING_GET_RESPONSE(&netdev->tx_ring, ++i)->status = NETIF_RSP_NULL;
+ }
#endif
netdev->tx_ring.rsp_prod_pvt = ++i;
RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(&netdev->tx_ring, notify);
- if (notify)
- xen_be_send_notify(&netdev->xendev);
+ if (notify) {
+ xen_be_send_notify(&netdev->xendev);
+ }
if (i == netdev->tx_ring.req_cons) {
- int more_to_do;
- RING_FINAL_CHECK_FOR_REQUESTS(&netdev->tx_ring, more_to_do);
- if (more_to_do)
- netdev->tx_work++;
+ int more_to_do;
+ RING_FINAL_CHECK_FOR_REQUESTS(&netdev->tx_ring, more_to_do);
+ if (more_to_do) {
+ netdev->tx_work++;
+ }
}
}
RING_IDX cons = netdev->tx_ring.req_cons;
do {
- make_tx_response(netif, txp, NETIF_RSP_ERROR);
- if (cons >= end)
- break;
- txp = RING_GET_REQUEST(&netdev->tx_ring, cons++);
+ make_tx_response(netif, txp, NETIF_RSP_ERROR);
+ if (cons >= end) {
+ break;
+ }
+ txp = RING_GET_REQUEST(&netdev->tx_ring, cons++);
} while (1);
netdev->tx_ring.req_cons = cons;
netif_schedule_work(netif);
void *tmpbuf = NULL;
for (;;) {
- rc = netdev->tx_ring.req_cons;
- rp = netdev->tx_ring.sring->req_prod;
- xen_rmb(); /* Ensure we see queued requests up to 'rp'. */
+ rc = netdev->tx_ring.req_cons;
+ rp = netdev->tx_ring.sring->req_prod;
+ xen_rmb(); /* Ensure we see queued requests up to 'rp'. */
- while ((rc != rp)) {
- if (RING_REQUEST_CONS_OVERFLOW(&netdev->tx_ring, rc))
- break;
- memcpy(&txreq, RING_GET_REQUEST(&netdev->tx_ring, rc), sizeof(txreq));
- netdev->tx_ring.req_cons = ++rc;
+ while ((rc != rp)) {
+ if (RING_REQUEST_CONS_OVERFLOW(&netdev->tx_ring, rc)) {
+ break;
+ }
+ memcpy(&txreq, RING_GET_REQUEST(&netdev->tx_ring, rc), sizeof(txreq));
+ netdev->tx_ring.req_cons = ++rc;
#if 1
- /* should not happen in theory, we don't announce the *
- * feature-{sg,gso,whatelse} flags in xenstore (yet?) */
- if (txreq.flags & NETTXF_extra_info) {
- xen_be_printf(&netdev->xendev, 0, "FIXME: extra info flag\n");
- net_tx_error(netdev, &txreq, rc);
- continue;
- }
- if (txreq.flags & NETTXF_more_data) {
- xen_be_printf(&netdev->xendev, 0, "FIXME: more data flag\n");
- net_tx_error(netdev, &txreq, rc);
- continue;
- }
+ /* should not happen in theory, we don't announce the *
+ * feature-{sg,gso,whatelse} flags in xenstore (yet?) */
+ if (txreq.flags & NETTXF_extra_info) {
+ xen_be_printf(&netdev->xendev, 0, "FIXME: extra info flag\n");
+ net_tx_error(netdev, &txreq, rc);
+ continue;
+ }
+ if (txreq.flags & NETTXF_more_data) {
+ xen_be_printf(&netdev->xendev, 0, "FIXME: more data flag\n");
+ net_tx_error(netdev, &txreq, rc);
+ continue;
+ }
#endif
- if (txreq.size < 14) {
- xen_be_printf(&netdev->xendev, 0, "bad packet size: %d\n", txreq.size);
- net_tx_error(netdev, &txreq, rc);
- continue;
- }
-
- if ((txreq.offset + txreq.size) > XC_PAGE_SIZE) {
- xen_be_printf(&netdev->xendev, 0, "error: page crossing\n");
- net_tx_error(netdev, &txreq, rc);
- continue;
- }
-
- xen_be_printf(&netdev->xendev, 3, "tx packet ref %d, off %d, len %d, flags 0x%x%s%s%s%s\n",
- txreq.gref, txreq.offset, txreq.size, txreq.flags,
- (txreq.flags & NETTXF_csum_blank) ? " csum_blank" : "",
- (txreq.flags & NETTXF_data_validated) ? " data_validated" : "",
- (txreq.flags & NETTXF_more_data) ? " more_data" : "",
- (txreq.flags & NETTXF_extra_info) ? " extra_info" : "");
-
- page = xc_gnttab_map_grant_ref(netdev->xendev.gnttabdev,
- netdev->xendev.dom,
- txreq.gref, PROT_READ);
- if (page == NULL) {
- xen_be_printf(&netdev->xendev, 0, "error: tx gref dereference failed (%d)\n",
+ if (txreq.size < 14) {
+ xen_be_printf(&netdev->xendev, 0, "bad packet size: %d\n", txreq.size);
+ net_tx_error(netdev, &txreq, rc);
+ continue;
+ }
+
+ if ((txreq.offset + txreq.size) > XC_PAGE_SIZE) {
+ xen_be_printf(&netdev->xendev, 0, "error: page crossing\n");
+ net_tx_error(netdev, &txreq, rc);
+ continue;
+ }
+
+ xen_be_printf(&netdev->xendev, 3, "tx packet ref %d, off %d, len %d, flags 0x%x%s%s%s%s\n",
+ txreq.gref, txreq.offset, txreq.size, txreq.flags,
+ (txreq.flags & NETTXF_csum_blank) ? " csum_blank" : "",
+ (txreq.flags & NETTXF_data_validated) ? " data_validated" : "",
+ (txreq.flags & NETTXF_more_data) ? " more_data" : "",
+ (txreq.flags & NETTXF_extra_info) ? " extra_info" : "");
+
+ page = xc_gnttab_map_grant_ref(netdev->xendev.gnttabdev,
+ netdev->xendev.dom,
+ txreq.gref, PROT_READ);
+ if (page == NULL) {
+ xen_be_printf(&netdev->xendev, 0, "error: tx gref dereference failed (%d)\n",
txreq.gref);
- net_tx_error(netdev, &txreq, rc);
- continue;
- }
- if (txreq.flags & NETTXF_csum_blank) {
+ net_tx_error(netdev, &txreq, rc);
+ continue;
+ }
+ if (txreq.flags & NETTXF_csum_blank) {
/* have read-only mapping -> can't fill checksum in-place */
- if (!tmpbuf)
- tmpbuf = qemu_malloc(XC_PAGE_SIZE);
+ if (!tmpbuf) {
+ tmpbuf = g_malloc(XC_PAGE_SIZE);
+ }
memcpy(tmpbuf, page + txreq.offset, txreq.size);
- net_checksum_calculate(tmpbuf, txreq.size);
- qemu_send_packet(netdev->vs, tmpbuf, txreq.size);
+ net_checksum_calculate(tmpbuf, txreq.size);
+ qemu_send_packet(&netdev->nic->nc, tmpbuf, txreq.size);
} else {
- qemu_send_packet(netdev->vs, page + txreq.offset, txreq.size);
+ qemu_send_packet(&netdev->nic->nc, page + txreq.offset, txreq.size);
}
- xc_gnttab_munmap(netdev->xendev.gnttabdev, page, 1);
- net_tx_response(netdev, &txreq, NETIF_RSP_OKAY);
- }
- if (!netdev->tx_work)
- break;
- netdev->tx_work = 0;
+ xc_gnttab_munmap(netdev->xendev.gnttabdev, page, 1);
+ net_tx_response(netdev, &txreq, NETIF_RSP_OKAY);
+ }
+ if (!netdev->tx_work) {
+ break;
+ }
+ netdev->tx_work = 0;
}
- qemu_free(tmpbuf);
+ g_free(tmpbuf);
}
/* ------------------------------------------------------------- */
static void net_rx_response(struct XenNetDev *netdev,
- netif_rx_request_t *req, int8_t st,
- uint16_t offset, uint16_t size,
- uint16_t flags)
+ netif_rx_request_t *req, int8_t st,
+ uint16_t offset, uint16_t size,
+ uint16_t flags)
{
RING_IDX i = netdev->rx_ring.rsp_prod_pvt;
netif_rx_response_t *resp;
resp->flags = flags;
resp->id = req->id;
resp->status = (int16_t)size;
- if (st < 0)
- resp->status = (int16_t)st;
+ if (st < 0) {
+ resp->status = (int16_t)st;
+ }
xen_be_printf(&netdev->xendev, 3, "rx response: idx %d, status %d, flags 0x%x\n",
- i, resp->status, resp->flags);
+ i, resp->status, resp->flags);
netdev->rx_ring.rsp_prod_pvt = ++i;
RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(&netdev->rx_ring, notify);
- if (notify)
- xen_be_send_notify(&netdev->xendev);
+ if (notify) {
+ xen_be_send_notify(&netdev->xendev);
+ }
}
#define NET_IP_ALIGN 2
-static int net_rx_ok(VLANClientState *vc)
+static int net_rx_ok(VLANClientState *nc)
{
- struct XenNetDev *netdev = vc->opaque;
+ struct XenNetDev *netdev = DO_UPCAST(NICState, nc, nc)->opaque;
RING_IDX rc, rp;
- if (netdev->xendev.be_state != XenbusStateConnected)
- return 0;
+ if (netdev->xendev.be_state != XenbusStateConnected) {
+ return 0;
+ }
rc = netdev->rx_ring.req_cons;
rp = netdev->rx_ring.sring->req_prod;
xen_rmb();
if (rc == rp || RING_REQUEST_CONS_OVERFLOW(&netdev->rx_ring, rc)) {
- xen_be_printf(&netdev->xendev, 2, "%s: no rx buffers (%d/%d)\n",
- __FUNCTION__, rc, rp);
- return 0;
+ xen_be_printf(&netdev->xendev, 2, "%s: no rx buffers (%d/%d)\n",
+ __FUNCTION__, rc, rp);
+ return 0;
}
return 1;
}
-static void net_rx_packet(VLANClientState *vc, const uint8_t *buf, size_t size)
+static ssize_t net_rx_packet(VLANClientState *nc, const uint8_t *buf, size_t size)
{
- struct XenNetDev *netdev = vc->opaque;
+ struct XenNetDev *netdev = DO_UPCAST(NICState, nc, nc)->opaque;
netif_rx_request_t rxreq;
RING_IDX rc, rp;
void *page;
- if (netdev->xendev.be_state != XenbusStateConnected)
- return;
+ if (netdev->xendev.be_state != XenbusStateConnected) {
+ return -1;
+ }
rc = netdev->rx_ring.req_cons;
rp = netdev->rx_ring.sring->req_prod;
xen_rmb(); /* Ensure we see queued requests up to 'rp'. */
if (rc == rp || RING_REQUEST_CONS_OVERFLOW(&netdev->rx_ring, rc)) {
- xen_be_printf(&netdev->xendev, 2, "no buffer, drop packet\n");
- return;
+ xen_be_printf(&netdev->xendev, 2, "no buffer, drop packet\n");
+ return -1;
}
if (size > XC_PAGE_SIZE - NET_IP_ALIGN) {
- xen_be_printf(&netdev->xendev, 0, "packet too big (%lu > %ld)",
- (unsigned long)size, XC_PAGE_SIZE - NET_IP_ALIGN);
- return;
+ xen_be_printf(&netdev->xendev, 0, "packet too big (%lu > %ld)",
+ (unsigned long)size, XC_PAGE_SIZE - NET_IP_ALIGN);
+ return -1;
}
memcpy(&rxreq, RING_GET_REQUEST(&netdev->rx_ring, rc), sizeof(rxreq));
netdev->rx_ring.req_cons = ++rc;
page = xc_gnttab_map_grant_ref(netdev->xendev.gnttabdev,
- netdev->xendev.dom,
- rxreq.gref, PROT_WRITE);
+ netdev->xendev.dom,
+ rxreq.gref, PROT_WRITE);
if (page == NULL) {
- xen_be_printf(&netdev->xendev, 0, "error: rx gref dereference failed (%d)\n",
+ xen_be_printf(&netdev->xendev, 0, "error: rx gref dereference failed (%d)\n",
rxreq.gref);
- net_rx_response(netdev, &rxreq, NETIF_RSP_ERROR, 0, 0, 0);
- return;
+ net_rx_response(netdev, &rxreq, NETIF_RSP_ERROR, 0, 0, 0);
+ return -1;
}
memcpy(page + NET_IP_ALIGN, buf, size);
xc_gnttab_munmap(netdev->xendev.gnttabdev, page, 1);
net_rx_response(netdev, &rxreq, NETIF_RSP_OKAY, NET_IP_ALIGN, size, 0);
+
+ return size;
}
/* ------------------------------------------------------------- */
+static NetClientInfo net_xen_info = {
+ .type = NET_CLIENT_TYPE_NIC,
+ .size = sizeof(NICState),
+ .can_receive = net_rx_ok,
+ .receive = net_rx_packet,
+};
+
static int net_init(struct XenDevice *xendev)
{
struct XenNetDev *netdev = container_of(xendev, struct XenNetDev, xendev);
- VLANState *vlan;
/* read xenstore entries */
- if (netdev->mac == NULL)
- netdev->mac = xenstore_read_be_str(&netdev->xendev, "mac");
+ if (netdev->mac == NULL) {
+ netdev->mac = xenstore_read_be_str(&netdev->xendev, "mac");
+ }
/* do we have all we need? */
- if (netdev->mac == NULL)
- return -1;
-
- vlan = qemu_find_vlan(netdev->xendev.dev);
- netdev->vs = qemu_new_vlan_client(vlan, "xen", NULL,
- net_rx_ok, net_rx_packet, NULL,
- NULL, netdev);
- snprintf(netdev->vs->info_str, sizeof(netdev->vs->info_str),
+ if (netdev->mac == NULL) {
+ return -1;
+ }
+
+ if (net_parse_macaddr(netdev->conf.macaddr.a, netdev->mac) < 0) {
+ return -1;
+ }
+
+ netdev->conf.vlan = qemu_find_vlan(netdev->xendev.dev, 1);
+ netdev->conf.peer = NULL;
+
+ netdev->nic = qemu_new_nic(&net_xen_info, &netdev->conf,
+ "xen", NULL, netdev);
+
+ snprintf(netdev->nic->nc.info_str, sizeof(netdev->nic->nc.info_str),
"nic: xenbus vif macaddr=%s", netdev->mac);
/* fill info */
int rx_copy;
if (xenstore_read_fe_int(&netdev->xendev, "tx-ring-ref",
- &netdev->tx_ring_ref) == -1)
- return -1;
+ &netdev->tx_ring_ref) == -1) {
+ return -1;
+ }
if (xenstore_read_fe_int(&netdev->xendev, "rx-ring-ref",
- &netdev->rx_ring_ref) == -1)
- return 1;
+ &netdev->rx_ring_ref) == -1) {
+ return 1;
+ }
if (xenstore_read_fe_int(&netdev->xendev, "event-channel",
- &netdev->xendev.remote_port) == -1)
- return -1;
+ &netdev->xendev.remote_port) == -1) {
+ return -1;
+ }
- if (xenstore_read_fe_int(&netdev->xendev, "request-rx-copy", &rx_copy) == -1)
- rx_copy = 0;
+ if (xenstore_read_fe_int(&netdev->xendev, "request-rx-copy", &rx_copy) == -1) {
+ rx_copy = 0;
+ }
if (rx_copy == 0) {
- xen_be_printf(&netdev->xendev, 0, "frontend doesn't support rx-copy.\n");
- return -1;
+ xen_be_printf(&netdev->xendev, 0, "frontend doesn't support rx-copy.\n");
+ return -1;
}
netdev->txs = xc_gnttab_map_grant_ref(netdev->xendev.gnttabdev,
- netdev->xendev.dom,
- netdev->tx_ring_ref,
- PROT_READ | PROT_WRITE);
+ netdev->xendev.dom,
+ netdev->tx_ring_ref,
+ PROT_READ | PROT_WRITE);
netdev->rxs = xc_gnttab_map_grant_ref(netdev->xendev.gnttabdev,
- netdev->xendev.dom,
- netdev->rx_ring_ref,
- PROT_READ | PROT_WRITE);
- if (!netdev->txs || !netdev->rxs)
- return -1;
+ netdev->xendev.dom,
+ netdev->rx_ring_ref,
+ PROT_READ | PROT_WRITE);
+ if (!netdev->txs || !netdev->rxs) {
+ return -1;
+ }
BACK_RING_INIT(&netdev->tx_ring, netdev->txs, XC_PAGE_SIZE);
BACK_RING_INIT(&netdev->rx_ring, netdev->rxs, XC_PAGE_SIZE);
xen_be_bind_evtchn(&netdev->xendev);
xen_be_printf(&netdev->xendev, 1, "ok: tx-ring-ref %d, rx-ring-ref %d, "
- "remote port %d, local port %d\n",
- netdev->tx_ring_ref, netdev->rx_ring_ref,
- netdev->xendev.remote_port, netdev->xendev.local_port);
+ "remote port %d, local port %d\n",
+ netdev->tx_ring_ref, netdev->rx_ring_ref,
+ netdev->xendev.remote_port, netdev->xendev.local_port);
+
+ net_tx_packets(netdev);
return 0;
}
xen_be_unbind_evtchn(&netdev->xendev);
if (netdev->txs) {
- xc_gnttab_munmap(netdev->xendev.gnttabdev, netdev->txs, 1);
- netdev->txs = NULL;
+ xc_gnttab_munmap(netdev->xendev.gnttabdev, netdev->txs, 1);
+ netdev->txs = NULL;
}
if (netdev->rxs) {
- xc_gnttab_munmap(netdev->xendev.gnttabdev, netdev->rxs, 1);
- netdev->rxs = NULL;
+ xc_gnttab_munmap(netdev->xendev.gnttabdev, netdev->rxs, 1);
+ netdev->rxs = NULL;
}
- if (netdev->vs) {
- qemu_del_vlan_client(netdev->vs);
- netdev->vs = NULL;
+ if (netdev->nic) {
+ qemu_del_vlan_client(&netdev->nic->nc);
+ netdev->nic = NULL;
}
}
{
struct XenNetDev *netdev = container_of(xendev, struct XenNetDev, xendev);
- qemu_free(netdev->mac);
+ g_free(netdev->mac);
return 0;
}
projects / qemu.git / blobdiff