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Add network device event for priority code point, PCP, changes.

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When the PCP is changed for either a VLAN network interface or when
prio tagging is enabled for a regular ethernet network interface,
broadcast the IFNET_EVENT_PCP event so applications like ibcore can
update its GID tables accordingly.

MFC after:	3 days
Reviewed by:	ae, kib
Differential Revision:	https://reviews.freebsd.org/D15040
Sponsored by:	Mellanox Technologies
This commit is contained in:
Hans Petter Selasky 2018-04-26 08:58:27 +00:00
parent 6a88262d6a
commit 4a381a9e42
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=333015
3 changed files with 9 additions and 2 deletions
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7
sys/net/if_ethersubr.c
View File

@ -1128,10 +1128,13 @@ ether_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
if (error != 0)
break;
if (ifr->ifr_lan_pcp > 7 &&
ifr->ifr_lan_pcp != IFNET_PCP_NONE)
ifr->ifr_lan_pcp != IFNET_PCP_NONE) {
error = EINVAL;
else
} else {
ifp->if_pcp = ifr->ifr_lan_pcp;
/* broadcast event about PCP change */
EVENTHANDLER_INVOKE(ifnet_event, ifp, IFNET_EVENT_PCP);
}
break;
case SIOCGLANPCP:

2
sys/net/if_var.h
View File

@ -421,6 +421,8 @@ EVENTHANDLER_DECLARE(ifnet_link_event, ifnet_link_event_handler_t);
/* Interface up/down event */
#define IFNET_EVENT_UP 0
#define IFNET_EVENT_DOWN 1
#define IFNET_EVENT_PCP 2 /* priority code point, PCP */
typedef void (*ifnet_event_fn)(void *, struct ifnet *ifp, int event);
EVENTHANDLER_DECLARE(ifnet_event, ifnet_event_fn);
#endif /* _SYS_EVENTHANDLER_H_ */

2
sys/net/if_vlan.c
View File

@ -1947,6 +1947,8 @@ vlan_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
}
ifv->ifv_pcp = ifr->ifr_vlan_pcp;
vlan_tag_recalculate(ifv);
/* broadcast event about PCP change */
EVENTHANDLER_INVOKE(ifnet_event, ifp, IFNET_EVENT_PCP);
break;
case SIOCSIFCAP: