2ccbbd06d2
which refers to IEEE 802.1p class of service and maps to the frame priority level. Values in order of priority are: 1 (Background (lowest)), 0 (Best effort (default)), 2 (Excellent effort), 3 (Critical applications), 4 (Video, < 100ms latency), 5 (Video, < 10ms latency), 6 (Internetwork control) and 7 (Network control (highest)). Example of usage: root# ifconfig em0.1 create root# ifconfig em0.1 vlanpcp 3 Note: The review D801 includes the pf(4) part, but as discussed with kristof, we won't commit the pf(4) bits for now. The credits of the original code is from rwatson. Differential Revision: https://reviews.freebsd.org/D801 Reviewed by: gnn, adrian, loos Discussed with: rwatson, glebius, kristof Tested by: many including Matthew Grooms <mgrooms__shrew.net> Obtained from: pfSense Relnotes: Yes
175 lines
6.4 KiB
C
175 lines
6.4 KiB
C
/*-
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* Copyright 1998 Massachusetts Institute of Technology
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*
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* Permission to use, copy, modify, and distribute this software and
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* its documentation for any purpose and without fee is hereby
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* granted, provided that both the above copyright notice and this
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* permission notice appear in all copies, that both the above
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* copyright notice and this permission notice appear in all
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* supporting documentation, and that the name of M.I.T. not be used
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* in advertising or publicity pertaining to distribution of the
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* software without specific, written prior permission. M.I.T. makes
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* no representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied
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* warranty.
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*
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* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
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* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
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* SHALL M.I.T. 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
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _NET_IF_VLAN_VAR_H_
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#define _NET_IF_VLAN_VAR_H_ 1
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/* Set the VLAN ID in an mbuf packet header non-destructively. */
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#define EVL_APPLY_VLID(m, vlid) \
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do { \
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if ((m)->m_flags & M_VLANTAG) { \
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(m)->m_pkthdr.ether_vtag &= EVL_VLID_MASK; \
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(m)->m_pkthdr.ether_vtag |= (vlid); \
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} else { \
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(m)->m_pkthdr.ether_vtag = (vlid); \
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(m)->m_flags |= M_VLANTAG; \
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} \
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} while (0)
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/* Set the priority ID in an mbuf packet header non-destructively. */
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#define EVL_APPLY_PRI(m, pri) \
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do { \
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if ((m)->m_flags & M_VLANTAG) { \
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uint16_t __vlantag = (m)->m_pkthdr.ether_vtag; \
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(m)->m_pkthdr.ether_vtag |= EVL_MAKETAG( \
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EVL_VLANOFTAG(__vlantag), (pri), \
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EVL_CFIOFTAG(__vlantag)); \
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} else { \
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(m)->m_pkthdr.ether_vtag = \
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EVL_MAKETAG(0, (pri), 0); \
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(m)->m_flags |= M_VLANTAG; \
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} \
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} while (0)
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/* sysctl(3) tags, for compatibility purposes */
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#define VLANCTL_PROTO 1
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#define VLANCTL_MAX 2
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/*
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* Configuration structure for SIOCSETVLAN and SIOCGETVLAN ioctls.
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*/
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struct vlanreq {
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char vlr_parent[IFNAMSIZ];
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u_short vlr_tag;
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};
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#define SIOCSETVLAN SIOCSIFGENERIC
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#define SIOCGETVLAN SIOCGIFGENERIC
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#define SIOCGVLANPCP _IOWR('i', 152, struct ifreq) /* Get VLAN PCP */
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#define SIOCSVLANPCP _IOW('i', 153, struct ifreq) /* Set VLAN PCP */
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/*
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* Names for 802.1q priorities ("802.1p"). Notice that in this scheme,
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* (0 < 1), allowing default 0-tagged traffic to take priority over background
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* tagged traffic.
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*/
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#define IEEE8021Q_PCP_BK 1 /* Background (lowest) */
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#define IEEE8021Q_PCP_BE 0 /* Best effort (default) */
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#define IEEE8021Q_PCP_EE 2 /* Excellent effort */
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#define IEEE8021Q_PCP_CA 3 /* Critical applications */
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#define IEEE8021Q_PCP_VI 4 /* Video, < 100ms latency */
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#define IEEE8021Q_PCP_VO 5 /* Video, < 10ms latency */
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#define IEEE8021Q_PCP_IC 6 /* Internetwork control */
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#define IEEE8021Q_PCP_NC 7 /* Network control (highest) */
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#ifdef _KERNEL
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/*
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* Drivers that are capable of adding and removing the VLAN header
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* in hardware indicate they support this by marking IFCAP_VLAN_HWTAGGING
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* in if_capabilities. Drivers for hardware that is capable
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* of handling larger MTU's that may include a software-appended
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* VLAN header w/o lowering the normal MTU should mark IFCAP_VLAN_MTU
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* in if_capabilities; this notifies the VLAN code it can leave the
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* MTU on the vlan interface at the normal setting.
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*/
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/*
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* VLAN tags are stored in host byte order. Byte swapping may be
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* necessary.
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*
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* Drivers that support hardware VLAN tag stripping fill in the
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* received VLAN tag (containing both vlan and priority information)
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* into the ether_vtag mbuf packet header field:
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*
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* m->m_pkthdr.ether_vtag = vtag; // ntohs()?
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* m->m_flags |= M_VLANTAG;
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*
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* to mark the packet m with the specified VLAN tag.
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*
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* On output the driver should check the mbuf for the M_VLANTAG
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* flag to see if a VLAN tag is present and valid:
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*
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* if (m->m_flags & M_VLANTAG) {
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* ... = m->m_pkthdr.ether_vtag; // htons()?
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* ... pass tag to hardware ...
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* }
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*
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* Note that a driver must indicate it supports hardware VLAN
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* stripping/insertion by marking IFCAP_VLAN_HWTAGGING in
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* if_capabilities.
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*/
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/*
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* The 802.1q code may also tag mbufs with the PCP (priority) field for use in
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* other layers of the stack, in which case an m_tag will be used. This is
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* semantically quite different from use of the ether_vtag field, which is
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* defined only between the device driver and VLAN layer.
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*/
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#define MTAG_8021Q 1326104895
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#define MTAG_8021Q_PCP_IN 0 /* Input priority. */
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#define MTAG_8021Q_PCP_OUT 1 /* Output priority. */
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#define VLAN_CAPABILITIES(_ifp) do { \
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if ((_ifp)->if_vlantrunk != NULL) \
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(*vlan_trunk_cap_p)(_ifp); \
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} while (0)
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#define VLAN_TRUNKDEV(_ifp) \
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(_ifp)->if_type == IFT_L2VLAN ? (*vlan_trunkdev_p)((_ifp)) : NULL
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#define VLAN_TAG(_ifp, _vid) \
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(_ifp)->if_type == IFT_L2VLAN ? (*vlan_tag_p)((_ifp), (_vid)) : EINVAL
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#define VLAN_COOKIE(_ifp) \
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(_ifp)->if_type == IFT_L2VLAN ? (*vlan_cookie_p)((_ifp)) : NULL
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#define VLAN_SETCOOKIE(_ifp, _cookie) \
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(_ifp)->if_type == IFT_L2VLAN ? \
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(*vlan_setcookie_p)((_ifp), (_cookie)) : EINVAL
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#define VLAN_DEVAT(_ifp, _vid) \
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(_ifp)->if_vlantrunk != NULL ? (*vlan_devat_p)((_ifp), (_vid)) : NULL
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extern void (*vlan_trunk_cap_p)(struct ifnet *);
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extern struct ifnet *(*vlan_trunkdev_p)(struct ifnet *);
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extern struct ifnet *(*vlan_devat_p)(struct ifnet *, uint16_t);
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extern int (*vlan_tag_p)(struct ifnet *, uint16_t *);
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extern int (*vlan_setcookie_p)(struct ifnet *, void *);
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extern void *(*vlan_cookie_p)(struct ifnet *);
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#ifdef _SYS_EVENTHANDLER_H_
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/* VLAN state change events */
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typedef void (*vlan_config_fn)(void *, struct ifnet *, uint16_t);
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typedef void (*vlan_unconfig_fn)(void *, struct ifnet *, uint16_t);
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EVENTHANDLER_DECLARE(vlan_config, vlan_config_fn);
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EVENTHANDLER_DECLARE(vlan_unconfig, vlan_unconfig_fn);
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#endif /* _SYS_EVENTHANDLER_H_ */
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#endif /* _KERNEL */
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#endif /* _NET_IF_VLAN_VAR_H_ */
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