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[Qemu-devel] [PATCH v5 06/10] netfilter: add an API to pass the packet t
From: |
Yang Hongyang |
Subject: |
[Qemu-devel] [PATCH v5 06/10] netfilter: add an API to pass the packet to next filter |
Date: |
Thu, 6 Aug 2015 18:21:51 +0800 |
add an API qemu_netfilter_pass_to_next() to pass the packet
to next filter.
Signed-off-by: Yang Hongyang <address@hidden>
---
v5: fold params to NetPacket struct
---
include/net/filter.h | 3 +++
net/filter.c | 33 +++++++++++++++++++++++++++++++++
2 files changed, 36 insertions(+)
diff --git a/include/net/filter.h b/include/net/filter.h
index f15d83d..9278d40 100644
--- a/include/net/filter.h
+++ b/include/net/filter.h
@@ -57,4 +57,7 @@ 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 */
+ssize_t qemu_netfilter_pass_to_next(NetFilterState *nf, NetPacket *packet);
+
#endif /* QEMU_NET_FILTER_H */
diff --git a/net/filter.c b/net/filter.c
index dfce544..84245a7 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;
@@ -127,6 +129,37 @@ void qmp_netfilter_del(const char *id, Error **errp)
qemu_opts_del(opts);
}
+ssize_t qemu_netfilter_pass_to_next(NetFilterState *nf, NetPacket *packet)
+{
+ int ret = 0;
+ NetFilterState *next = QTAILQ_NEXT(nf, next);
+ struct iovec iov = {
+ .iov_base = (void *)packet->data,
+ .iov_len = packet->size
+ };
+
+ while (next) {
+ if (next->chain == nf->chain || next->chain == NET_FILTER_ALL) {
+ ret = next->info->receive_iov(next, packet->sender, packet->flags,
+ &iov, 1, packet->sent_cb);
+ if (ret) {
+ return ret;
+ }
+ }
+ next = QTAILQ_NEXT(next, next);
+ }
+
+ /* we have gone through all filters, pass it to receiver */
+ if (packet->sender && packet->sender->peer) {
+ return qemu_net_queue_send_iov(packet->sender->peer->incoming_queue,
+ packet->sender, packet->flags,
+ &iov, 1, packet->sent_cb);
+ }
+
+ /* no receiver, or sender is deleted, drop this packet, return success */
+ return packet->size;
+}
+
typedef int (NetFilterInit)(const NetFilterOptions *opts,
const char *name, int chain,
NetClientState *netdev, Error **errp);
--
1.9.1
- [Qemu-devel] [PATCH v5 00/10] For QEMU 2.5: Add a netfilter object and netbuffer filter, Yang Hongyang, 2015/08/06
- [Qemu-devel] [PATCH v5 01/10] net: add a new object netfilter, Yang Hongyang, 2015/08/06
- [Qemu-devel] [PATCH v5 04/10] netfilter: hook packets before net queue send, Yang Hongyang, 2015/08/06
- [Qemu-devel] [PATCH v5 02/10] init/cleanup of netfilter object, Yang Hongyang, 2015/08/06
- [Qemu-devel] [PATCH v5 06/10] netfilter: add an API to pass the packet to next filter,
Yang Hongyang <=
- [Qemu-devel] [PATCH v5 05/10] move out net queue structs define, Yang Hongyang, 2015/08/06
- [Qemu-devel] [PATCH v5 03/10] netfilter: add netfilter_{add|del} commands, Yang Hongyang, 2015/08/06
- [Qemu-devel] [PATCH v5 08/10] netfilter: add a netbuffer filter, Yang Hongyang, 2015/08/06
- [Qemu-devel] [PATCH v5 09/10] filter/buffer: update command description and help, Yang Hongyang, 2015/08/06
- [Qemu-devel] [PATCH v5 10/10] tests: add test cases for netfilter object, Yang Hongyang, 2015/08/06
- [Qemu-devel] [PATCH v5 07/10] net/queue: export qemu_net_queue_append_iov, Yang Hongyang, 2015/08/06