6fc6de7e0e
Some errors received from the kernel are acceptable, such as a -ENOENT for a rule deletion (the rule was already no longer existing in the kernel). Make sure we consider return codes properly. For that, nl_recv() has been simplified. qdisc_exists() function is no longer needed as we can check whether the kernel returned -EEXIST when requiring the qdisc creation. It's simpler and faster. Add a few messages for clarity when a netlink error occurs. Signed-off-by: Pascal Mazon <pascal.mazon@6wind.com>
62 lines
2.5 KiB
C
62 lines
2.5 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright 2017 6WIND S.A.
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* Copyright 2017 Mellanox.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of 6WIND S.A. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _TAP_TCMSGS_H_
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#define _TAP_TCMSGS_H_
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#include <linux/if_ether.h>
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#include <linux/rtnetlink.h>
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#include <linux/pkt_sched.h>
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#include <linux/pkt_cls.h>
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#include <linux/tc_act/tc_mirred.h>
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#include <linux/tc_act/tc_gact.h>
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#include <linux/tc_act/tc_skbedit.h>
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#include <inttypes.h>
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#include <rte_ether.h>
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#include <tap_netlink.h>
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#define MULTIQ_MAJOR_HANDLE (1 << 16)
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void tc_init_msg(struct nlmsg *msg, uint16_t ifindex, uint16_t type,
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uint16_t flags);
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int qdisc_list(int nlsk_fd, uint16_t ifindex);
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int qdisc_flush(int nlsk_fd, uint16_t ifindex);
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int qdisc_create_ingress(int nlsk_fd, uint16_t ifindex);
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int qdisc_create_multiq(int nlsk_fd, uint16_t ifindex);
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int qdisc_add_ingress(int nlsk_fd, uint16_t ifindex);
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int qdisc_add_multiq(int nlsk_fd, uint16_t ifindex);
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int filter_list_ingress(int nlsk_fd, uint16_t ifindex);
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#endif /* _TAP_TCMSGS_H_ */
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