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author | bz <bz@FreeBSD.org> | 2011-02-16 21:29:13 +0000 |
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committer | bz <bz@FreeBSD.org> | 2011-02-16 21:29:13 +0000 |
commit | b9b7d3e93a251adacd363eaf9d23963ec7467075 (patch) | |
tree | e312f60d853b2306ae67fe2988280d1dbc41c9cf /sys/net/if.c | |
parent | ea2186a5ebf08dfc9eddc393caec2d574ac8ce0b (diff) | |
download | FreeBSD-src-b9b7d3e93a251adacd363eaf9d23963ec7467075.zip FreeBSD-src-b9b7d3e93a251adacd363eaf9d23963ec7467075.tar.gz |
Mfp4 CH=177274,177280,177284-177285,177297,177324-177325
VNET socket push back:
try to minimize the number of places where we have to switch vnets
and narrow down the time we stay switched. Add assertions to the
socket code to catch possibly unset vnets as seen in r204147.
While this reduces the number of vnet recursion in some places like
NFS, POSIX local sockets and some netgraph, .. recursions are
impossible to fix.
The current expectations are documented at the beginning of
uipc_socket.c along with the other information there.
Sponsored by: The FreeBSD Foundation
Sponsored by: CK Software GmbH
Reviewed by: jhb
Tested by: zec
Tested by: Mikolaj Golub (to.my.trociny gmail.com)
MFC after: 2 weeks
Diffstat (limited to 'sys/net/if.c')
-rw-r--r-- | sys/net/if.c | 49 |
1 files changed, 34 insertions, 15 deletions
diff --git a/sys/net/if.c b/sys/net/if.c index ccd4689..2e21ae9 100644 --- a/sys/net/if.c +++ b/sys/net/if.c @@ -2440,10 +2440,13 @@ ifioctl(struct socket *so, u_long cmd, caddr_t data, struct thread *td) int error; int oif_flags; + CURVNET_SET(so->so_vnet); switch (cmd) { case SIOCGIFCONF: case OSIOCGIFCONF: - return (ifconf(cmd, data)); + error = ifconf(cmd, data); + CURVNET_RESTORE(); + return (error); #ifdef COMPAT_FREEBSD32 case SIOCGIFCONF32: @@ -2455,7 +2458,9 @@ ifioctl(struct socket *so, u_long cmd, caddr_t data, struct thread *td) ifc.ifc_len = ifc32->ifc_len; ifc.ifc_buf = PTRIN(ifc32->ifc_buf); - return (ifconf(SIOCGIFCONF, (void *)&ifc)); + error = ifconf(SIOCGIFCONF, (void *)&ifc); + CURVNET_RESTORE(); + return (error); } #endif } @@ -2465,42 +2470,55 @@ ifioctl(struct socket *so, u_long cmd, caddr_t data, struct thread *td) #ifdef VIMAGE case SIOCSIFRVNET: error = priv_check(td, PRIV_NET_SETIFVNET); - if (error) - return (error); - return (if_vmove_reclaim(td, ifr->ifr_name, ifr->ifr_jid)); + if (error == 0) + error = if_vmove_reclaim(td, ifr->ifr_name, + ifr->ifr_jid); + CURVNET_RESTORE(); + return (error); #endif case SIOCIFCREATE: case SIOCIFCREATE2: error = priv_check(td, PRIV_NET_IFCREATE); - if (error) - return (error); - return (if_clone_create(ifr->ifr_name, sizeof(ifr->ifr_name), - cmd == SIOCIFCREATE2 ? ifr->ifr_data : NULL)); + if (error == 0) + error = if_clone_create(ifr->ifr_name, + sizeof(ifr->ifr_name), + cmd == SIOCIFCREATE2 ? ifr->ifr_data : NULL); + CURVNET_RESTORE(); + return (error); case SIOCIFDESTROY: error = priv_check(td, PRIV_NET_IFDESTROY); - if (error) - return (error); - return if_clone_destroy(ifr->ifr_name); + if (error == 0) + error = if_clone_destroy(ifr->ifr_name); + CURVNET_RESTORE(); + return (error); case SIOCIFGCLONERS: - return (if_clone_list((struct if_clonereq *)data)); + error = if_clone_list((struct if_clonereq *)data); + CURVNET_RESTORE(); + return (error); case SIOCGIFGMEMB: - return (if_getgroupmembers((struct ifgroupreq *)data)); + error = if_getgroupmembers((struct ifgroupreq *)data); + CURVNET_RESTORE(); + return (error); } ifp = ifunit_ref(ifr->ifr_name); - if (ifp == NULL) + if (ifp == NULL) { + CURVNET_RESTORE(); return (ENXIO); + } error = ifhwioctl(cmd, ifp, data, td); if (error != ENOIOCTL) { if_rele(ifp); + CURVNET_RESTORE(); return (error); } oif_flags = ifp->if_flags; if (so->so_proto == NULL) { if_rele(ifp); + CURVNET_RESTORE(); return (EOPNOTSUPP); } #ifndef COMPAT_43 @@ -2575,6 +2593,7 @@ ifioctl(struct socket *so, u_long cmd, caddr_t data, struct thread *td) #endif } if_rele(ifp); + CURVNET_RESTORE(); return (error); } |