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[Qemu-devel] [PATCH v4 06/11] netfilter: add an API to pass the packet t
From: |
Yang Hongyang |
Subject: |
[Qemu-devel] [PATCH v4 06/11] netfilter: add an API to pass the packet to next filter |
Date: |
Tue, 4 Aug 2015 16:30:39 +0800 |
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 <address@hidden>
---
include/net/filter.h | 12 ++++++++++++
net/filter.c | 43 +++++++++++++++++++++++++++++++++++++++++++
2 files changed, 55 insertions(+)
diff --git a/include/net/filter.h b/include/net/filter.h
index c146be2..867d5aa 100644
--- a/include/net/filter.h
+++ b/include/net/filter.h
@@ -54,4 +54,16 @@ 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/net/filter.c b/net/filter.c
index 24ec4e1..166b851 100644
--- a/net/filter.c
+++ b/net/filter.c
@@ -14,9 +14,11 @@
#include "qapi/dealloc-visitor.h"
#include "qemu/config-file.h"
#include "qmp-commands.h"
+#include "qemu/iov.h"
#include "net/filter.h"
#include "net/net.h"
+#include "net/queue.h"
static QTAILQ_HEAD(, NetFilterState) net_filters;
@@ -130,6 +132,47 @@ 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)
+{
+ int ret = 0;
+ ssize_t size = iov_size(iov, iovcnt);
+ NetFilterState *next = QTAILQ_NEXT(nf, next);
+
+ while (next) {
+ if (next->chain == nf->chain || next->chain == NET_FILTER_ALL) {
+ ret = next->info->receive_iov(next, sender, flags, iov, iovcnt);
+ if (ret == size) {
+ return;
+ }
+ }
+ next = QTAILQ_NEXT(next, next);
+ }
+
+ /* we have gone through all filters, pass it to receiver */
+ if (sender && sender->peer) {
+ qemu_net_queue_send_iov(sender->peer->incoming_queue, sender, flags,
+ iov, iovcnt, NULL);
+ }
+}
+
+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);
--
1.9.1
- [Qemu-devel] [PATCH v4 00/11] For QEMU 2.5: Add a netfilter object and netbuffer filter, Yang Hongyang, 2015/08/04
- [Qemu-devel] [PATCH v4 01/11] net: add a new object netfilter, Yang Hongyang, 2015/08/04
- [Qemu-devel] [PATCH v4 02/11] init/cleanup of netfilter object, Yang Hongyang, 2015/08/04
- Re: [Qemu-devel] [PATCH v4 02/11] init/cleanup of netfilter object, Jason Wang, 2015/08/06
- Re: [Qemu-devel] [PATCH v4 02/11] init/cleanup of netfilter object, Yang Hongyang, 2015/08/06
- Re: [Qemu-devel] [PATCH v4 02/11] init/cleanup of netfilter object, Jason Wang, 2015/08/06
- Re: [Qemu-devel] [PATCH v4 02/11] init/cleanup of netfilter object, Yang Hongyang, 2015/08/06
- Re: [Qemu-devel] [PATCH v4 02/11] init/cleanup of netfilter object, Jason Wang, 2015/08/06
- Re: [Qemu-devel] [PATCH v4 02/11] init/cleanup of netfilter object, Yang Hongyang, 2015/08/06
- Re: [Qemu-devel] [PATCH v4 02/11] init/cleanup of netfilter object, Jason Wang, 2015/08/06
[Qemu-devel] [PATCH v4 06/11] netfilter: add an API to pass the packet to next filter,
Yang Hongyang <=
[Qemu-devel] [PATCH v4 05/11] netfilter: hook packets before net queue send, Yang Hongyang, 2015/08/04
[Qemu-devel] [PATCH v4 03/11] netfilter: add netfilter_{add|del} commands, Yang Hongyang, 2015/08/04
[Qemu-devel] [PATCH v4 07/11] net/queue: export qemu_net_queue_append_iov, Yang Hongyang, 2015/08/04
[Qemu-devel] [PATCH v4 04/11] net: delete netfilter object when delete netdev, Yang Hongyang, 2015/08/04