Date: Wed, 22 Jan 2020 20:36:46 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r356993 - head/sys/net Message-ID: <202001222036.00MKakdv056453@repo.freebsd.org>
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Author: mav Date: Wed Jan 22 20:36:45 2020 New Revision: 356993 URL: https://svnweb.freebsd.org/changeset/base/356993 Log: Update route MTUs for bridge, lagg and vlan interfaces. Those interfaces may implicitly change their MTU on addition of parent interface in addition to normal SIOCSIFMTU ioctl path, where the route MTUs are updated normally. MFC after: 2 weeks Sponsored by: iXsystems, Inc. Modified: head/sys/net/if_bridge.c head/sys/net/if_lagg.c head/sys/net/if_vlan.c Modified: head/sys/net/if_bridge.c ============================================================================== --- head/sys/net/if_bridge.c Wed Jan 22 20:31:01 2020 (r356992) +++ head/sys/net/if_bridge.c Wed Jan 22 20:36:45 2020 (r356993) @@ -135,7 +135,15 @@ __FBSDID("$FreeBSD$"); #include <net/route.h> +#ifdef INET6 /* + * XXX: declare here to avoid to include many inet6 related files.. + * should be more generalized? + */ +extern void nd6_setmtu(struct ifnet *); +#endif + +/* * Size of the route hash table. Must be a power of two. */ #ifndef BRIDGE_RTHASH_SIZE @@ -772,7 +780,7 @@ bridge_ioctl(struct ifnet *ifp, u_long cmd, caddr_t da } args; struct ifdrv *ifd = (struct ifdrv *) data; const struct bridge_control *bc; - int error = 0; + int error = 0, oldmtu; switch (cmd) { @@ -818,11 +826,23 @@ bridge_ioctl(struct ifnet *ifp, u_long cmd, caddr_t da break; } + oldmtu = ifp->if_mtu; BRIDGE_LOCK(sc); error = (*bc->bc_func)(sc, &args); BRIDGE_UNLOCK(sc); if (error) break; + + /* + * Bridge MTU may change during addition of the first port. + * If it did, do network layer specific procedure. + */ + if (ifp->if_mtu != oldmtu) { +#ifdef INET6 + nd6_setmtu(ifp); +#endif + rt_updatemtu(ifp); + } if (bc->bc_flags & BC_F_COPYOUT) error = copyout(&args, ifd->ifd_data, ifd->ifd_len); Modified: head/sys/net/if_lagg.c ============================================================================== --- head/sys/net/if_lagg.c Wed Jan 22 20:31:01 2020 (r356992) +++ head/sys/net/if_lagg.c Wed Jan 22 20:36:45 2020 (r356993) @@ -53,6 +53,7 @@ __FBSDID("$FreeBSD$"); #include <net/if_types.h> #include <net/if_var.h> #include <net/bpf.h> +#include <net/route.h> #include <net/vnet.h> #if defined(INET) || defined(INET6) @@ -74,6 +75,14 @@ __FBSDID("$FreeBSD$"); #include <net/if_lagg.h> #include <net/ieee8023ad_lacp.h> +#ifdef INET6 +/* + * XXX: declare here to avoid to include many inet6 related files.. + * should be more generalized? + */ +extern void nd6_setmtu(struct ifnet *); +#endif + #define LAGG_RLOCK() struct epoch_tracker lagg_et; epoch_enter_preempt(net_epoch_preempt, &lagg_et) #define LAGG_RUNLOCK() epoch_exit_preempt(net_epoch_preempt, &lagg_et) #define LAGG_RLOCK_ASSERT() NET_EPOCH_ASSERT() @@ -1178,7 +1187,7 @@ lagg_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data struct ifnet *tpif; struct thread *td = curthread; char *buf, *outbuf; - int count, buflen, len, error = 0; + int count, buflen, len, error = 0, oldmtu; bzero(&rpbuf, sizeof(rpbuf)); @@ -1453,10 +1462,23 @@ lagg_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data tpif->if_xname); } #endif + oldmtu = ifp->if_mtu; LAGG_XLOCK(sc); error = lagg_port_create(sc, tpif); LAGG_XUNLOCK(sc); if_rele(tpif); + + /* + * LAGG MTU may change during addition of the first port. + * If it did, do network layer specific procedure. + */ + if (ifp->if_mtu != oldmtu) { +#ifdef INET6 + nd6_setmtu(ifp); +#endif + rt_updatemtu(ifp); + } + VLAN_CAPABILITIES(ifp); break; case SIOCSLAGGDELPORT: Modified: head/sys/net/if_vlan.c ============================================================================== --- head/sys/net/if_vlan.c Wed Jan 22 20:31:01 2020 (r356992) +++ head/sys/net/if_vlan.c Wed Jan 22 20:36:45 2020 (r356993) @@ -46,6 +46,7 @@ __FBSDID("$FreeBSD$"); #include "opt_inet.h" +#include "opt_inet6.h" #include "opt_kern_tls.h" #include "opt_vlan.h" #include "opt_ratelimit.h" @@ -75,6 +76,7 @@ __FBSDID("$FreeBSD$"); #include <net/if_dl.h> #include <net/if_types.h> #include <net/if_vlan_var.h> +#include <net/route.h> #include <net/vnet.h> #ifdef INET @@ -82,6 +84,14 @@ __FBSDID("$FreeBSD$"); #include <netinet/if_ether.h> #endif +#ifdef INET6 +/* + * XXX: declare here to avoid to include many inet6 related files.. + * should be more generalized? + */ +extern void nd6_setmtu(struct ifnet *); +#endif + #define VLAN_DEF_HWIDTH 4 #define VLAN_IFFLAGS (IFF_BROADCAST | IFF_MULTICAST) @@ -1807,7 +1817,7 @@ vlan_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data struct ifvlan *ifv; struct ifvlantrunk *trunk; struct vlanreq vlr; - int error = 0; + int error = 0, oldmtu; ifr = (struct ifreq *)data; ifa = (struct ifaddr *) data; @@ -1901,8 +1911,20 @@ vlan_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data error = ENOENT; break; } + oldmtu = ifp->if_mtu; error = vlan_config(ifv, p, vlr.vlr_tag); if_rele(p); + + /* + * VLAN MTU may change during addition of the vlandev. + * If it did, do network layer specific procedure. + */ + if (ifp->if_mtu != oldmtu) { +#ifdef INET6 + nd6_setmtu(ifp); +#endif + rt_updatemtu(ifp); + } break; case SIOCGETVLAN:
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