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netfilter/queue: introduce nfnl_queue_msg_send_verdict_batch() 

The batched verdict implicitely ACKs all queue packet IDs up to the
one send back, which reduces the number of verdict messages send
to the kernel.

Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
This commit is contained in:
Holger Eitzenberger 2013-06-19 15:23:15 +02:00 committed by Thomas Graf
parent 34a96ba5c2
commit d612180cda
2 changed files with 31 additions and 0 deletions
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2
include/netlink/netfilter/queue_msg.h
View File

@ -93,6 +93,8 @@ extern unsigned int nfnl_queue_msg_get_verdict(const struct nfnl_queue_msg *);
extern struct nl_msg * nfnl_queue_msg_build_verdict(const struct nfnl_queue_msg *);
extern int nfnl_queue_msg_send_verdict(struct nl_sock *,
const struct nfnl_queue_msg *);
extern int nfnl_queue_msg_send_verdict_batch(struct nl_sock *,
const struct nfnl_queue_msg *);
extern int nfnl_queue_msg_send_verdict_payload(struct nl_sock *,
const struct nfnl_queue_msg *,
const void *, unsigned );

29
lib/netfilter/queue_msg.c
View File

@ -199,6 +199,12 @@ nfnl_queue_msg_build_verdict(const struct nfnl_queue_msg *msg)
return __nfnl_queue_msg_build_verdict(msg, NFQNL_MSG_VERDICT);
}
struct nl_msg *
nfnl_queue_msg_build_verdict_batch(const struct nfnl_queue_msg *msg)
{
return __nfnl_queue_msg_build_verdict(msg, NFQNL_MSG_VERDICT_BATCH);
}
/**
* Send a message verdict/mark
* @arg nlh netlink messsage header
@ -222,6 +228,29 @@ int nfnl_queue_msg_send_verdict(struct nl_sock *nlh,
return wait_for_ack(nlh);
}
/**
* Send a message batched verdict/mark
* @arg nlh netlink messsage header
* @arg msg queue msg
* @return 0 on OK or error code
*/
int nfnl_queue_msg_send_verdict_batch(struct nl_sock *nlh,
const struct nfnl_queue_msg *msg)
{
struct nl_msg *nlmsg;
int err;
nlmsg = nfnl_queue_msg_build_verdict_batch(msg);
if (nlmsg == NULL)
return -NLE_NOMEM;
err = nl_send_auto_complete(nlh, nlmsg);
nlmsg_free(nlmsg);
if (err < 0)
return err;
return wait_for_ack(nlh);
}
/**
* Send a message verdict including the payload
* @arg nlh netlink messsage header