add an API qemu_netfilter_pass_to_next_iov() to pass the packet
to next filter, and a wrapper qemu_netfilter_pass_to_next().
Signed-off-by: Yang Hongyang <yan...@cn.fujitsu.com>
---
include/net/filter.h | 12 ++++++++++++
include/net/net.h | 1 +
net/filter.c | 31 +++++++++++++++++++++++++++++++
net/net.c | 13 +++++++++++++
4 files changed, 57 insertions(+)
diff --git a/include/net/filter.h b/include/net/filter.h
index 7f0c949..c2be970 100644
--- a/include/net/filter.h
+++ b/include/net/filter.h
@@ -53,4 +53,16 @@ void qemu_del_net_filter(NetFilterState *nf);
void netfilter_add(QemuOpts *opts, Error **errp);
void qmp_netfilter_add(QDict *qdict, QObject **ret, Error **errp);
+/* pass the packet to the next filter */
+void qemu_netfilter_pass_to_next_iov(NetFilterState *nf,
+ NetClientState *sender,
+ unsigned flags,
+ const struct iovec *iov,
+ int iovcnt);
+void qemu_netfilter_pass_to_next(NetFilterState *nf,
+ NetClientState *sender,
+ unsigned flags,
+ const uint8_t *data,
+ size_t size);
+
#endif /* QEMU_NET_FILTER_H */
diff --git a/include/net/net.h b/include/net/net.h
index 5c5c109..d3bfe12 100644
--- a/include/net/net.h
+++ b/include/net/net.h
@@ -117,6 +117,7 @@ NetClientState *qemu_new_net_client(NetClientInfo *info,
const char *name);
int qemu_netdev_add_filter(NetClientState *nc, NetFilterState *nf);
void qemu_netdev_remove_filter(NetClientState *nc, NetFilterState *nf);
+NetFilterState *qemu_netdev_next_filter(NetClientState *nc, NetFilterState
*nf);
NICState *qemu_new_nic(NetClientInfo *info,
NICConf *conf,
const char *model,
diff --git a/net/filter.c b/net/filter.c
index bf113e9..84845b1 100644
--- a/net/filter.c
+++ b/net/filter.c
@@ -131,6 +131,37 @@ void qmp_netfilter_del(const char *id, Error **errp)
qemu_opts_del(opts);
}
+void qemu_netfilter_pass_to_next_iov(NetFilterState *nf,
+ NetClientState *sender,
+ unsigned flags,
+ const struct iovec *iov,
+ int iovcnt)
+{
+ NetFilterState *next = qemu_netdev_next_filter(nf->netdev, nf);
+
+ while (next) {
+ if (next->chain == nf->chain || next->chain == NET_FILTER_ALL) {
+ next->info->receive_iov(next, sender, flags, iov, iovcnt);
+ return;
+ }
+ next = qemu_netdev_next_filter(next->netdev, next);
+ }
+}
+
+void qemu_netfilter_pass_to_next(NetFilterState *nf,
+ NetClientState *sender,
+ unsigned flags,
+ const uint8_t *data,
+ size_t size)
+{
+ struct iovec iov = {
+ .iov_base = (void *)data,
+ .iov_len = size
+ };
+
+ return qemu_netfilter_pass_to_next_iov(nf, sender, flags, &iov, 1);
+}
+
typedef int (NetFilterInit)(const NetFilterOptions *opts,
const char *name, int chain,
NetClientState *netdev, Error **errp);
diff --git a/net/net.c b/net/net.c
index f774c39..e087763 100644
--- a/net/net.c
+++ b/net/net.c
@@ -339,6 +339,19 @@ void qemu_netdev_remove_filter(NetClientState *nc,
NetFilterState *nf)
remove_filter(nc, filter);
}
+NetFilterState *qemu_netdev_next_filter(NetClientState *nc, NetFilterState *nf)
+{
+ Filter *filter = NULL;
+
+ QTAILQ_FOREACH(filter, &nc->filters, next) {
+ if (filter->nf == nf) {
+ break;
+ }
+ }
+
+ return QTAILQ_NEXT(filter, next)->nf;
+}
+
NICState *qemu_new_nic(NetClientInfo *info,
NICConf *conf,
const char *model,
--
1.9.1
