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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2018-08-09 14:02:09 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2018-09-21 10:29:38 +0200 |
| commit | bb80d9df8bac71eedee1a6787ca63aef972a7e48 (patch) | |
| tree | 1b5cb9443c5ead5706c35afb618abbbd1592315e /freebsd/sys/net/if_clone.c | |
| parent | Update to FreeBSD head 2017-10-01 (diff) | |
| download | rtems-libbsd-bb80d9df8bac71eedee1a6787ca63aef972a7e48.tar.bz2 | |
Update to FreeBSD head 2017-12-01
Git mirror commit e724f51f811a4b2bd29447f8b85ab5c2f9b88266.
Update #3472.
Diffstat (limited to 'freebsd/sys/net/if_clone.c')
| -rw-r--r-- | freebsd/sys/net/if_clone.c | 62 |
1 files changed, 38 insertions, 24 deletions
diff --git a/freebsd/sys/net/if_clone.c b/freebsd/sys/net/if_clone.c index e7339423..99faa05f 100644 --- a/freebsd/sys/net/if_clone.c +++ b/freebsd/sys/net/if_clone.c @@ -1,6 +1,8 @@ #include <machine/rtems-bsd-kernel-space.h> /*- + * SPDX-License-Identifier: BSD-3-Clause + * * Copyright (c) 2012 Gleb Smirnoff <glebius@FreeBSD.org> * Copyright (c) 1980, 1986, 1993 * The Regents of the University of California. All rights reserved. @@ -597,39 +599,21 @@ ifc_name2unit(const char *name, int *unit) return (0); } -int -ifc_alloc_unit(struct if_clone *ifc, int *unit) +static int +ifc_alloc_unit_specific(struct if_clone *ifc, int *unit) { char name[IFNAMSIZ]; - int wildcard; - wildcard = (*unit < 0); -retry: if (*unit > ifc->ifc_maxunit) return (ENOSPC); - if (*unit < 0) { - *unit = alloc_unr(ifc->ifc_unrhdr); - if (*unit == -1) - return (ENOSPC); - } else { - *unit = alloc_unr_specific(ifc->ifc_unrhdr, *unit); - if (*unit == -1) { - if (wildcard) { - (*unit)++; - goto retry; - } else - return (EEXIST); - } - } + + if (alloc_unr_specific(ifc->ifc_unrhdr, *unit) == -1) + return (EEXIST); snprintf(name, IFNAMSIZ, "%s%d", ifc->ifc_name, *unit); if (ifunit(name) != NULL) { free_unr(ifc->ifc_unrhdr, *unit); - if (wildcard) { - (*unit)++; - goto retry; - } else - return (EEXIST); + return (EEXIST); } IF_CLONE_ADDREF(ifc); @@ -637,6 +621,36 @@ retry: return (0); } +static int +ifc_alloc_unit_next(struct if_clone *ifc, int *unit) +{ + int error; + + *unit = alloc_unr(ifc->ifc_unrhdr); + if (*unit == -1) + return (ENOSPC); + + free_unr(ifc->ifc_unrhdr, *unit); + for (;;) { + error = ifc_alloc_unit_specific(ifc, unit); + if (error != EEXIST) + break; + + (*unit)++; + } + + return (error); +} + +int +ifc_alloc_unit(struct if_clone *ifc, int *unit) +{ + if (*unit < 0) + return (ifc_alloc_unit_next(ifc, unit)); + else + return (ifc_alloc_unit_specific(ifc, unit)); +} + void ifc_free_unit(struct if_clone *ifc, int unit) { |