From 6db20956ee51b20f70e05c28fed3f34d48ac2fee Mon Sep 17 00:00:00 2001 From: marcel Date: Sun, 3 Aug 2014 02:24:52 +0000 Subject: [PATCH] MFC 264162: Accept RFC 2292 option values so that RFC 2292 compliant programs that are unaware of RFC 3542 can construct control messages. Obtained from: Juniper Networks, Inc. git-svn-id: svn://svn.freebsd.org/base/stable/10@269454 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f --- lib/libc/net/ip6opt.c | 24 ++++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-) diff --git a/lib/libc/net/ip6opt.c b/lib/libc/net/ip6opt.c index 003c62527..d7ea18289 100644 --- a/lib/libc/net/ip6opt.c +++ b/lib/libc/net/ip6opt.c @@ -45,6 +45,18 @@ __FBSDID("$FreeBSD$"); static int ip6optlen(u_int8_t *opt, u_int8_t *lim); static void inet6_insert_padopt(u_char *p, int len); +#ifndef IPV6_2292HOPOPTS +#define IPV6_2292HOPOPTS 22 +#endif +#ifndef IPV6_2292DSTOPTS +#define IPV6_2292DSTOPTS 23 +#endif + +#define is_ipv6_hopopts(x) \ + ((x) == IPV6_HOPOPTS || (x) == IPV6_2292HOPOPTS) +#define is_ipv6_dstopts(x) \ + ((x) == IPV6_DSTOPTS || (x) == IPV6_2292DSTOPTS) + /* * This function returns the number of bytes required to hold an option * when it is stored as ancillary data, including the cmsghdr structure @@ -72,9 +84,9 @@ inet6_option_init(void *bp, struct cmsghdr **cmsgp, int type) struct cmsghdr *ch = (struct cmsghdr *)bp; /* argument validation */ - if (type != IPV6_HOPOPTS && type != IPV6_DSTOPTS) + if (!is_ipv6_hopopts(type) && !is_ipv6_dstopts(type)) return(-1); - + ch->cmsg_level = IPPROTO_IPV6; ch->cmsg_type = type; ch->cmsg_len = CMSG_LEN(0); @@ -234,8 +246,8 @@ inet6_option_next(const struct cmsghdr *cmsg, u_int8_t **tptrp) u_int8_t *lim; if (cmsg->cmsg_level != IPPROTO_IPV6 || - (cmsg->cmsg_type != IPV6_HOPOPTS && - cmsg->cmsg_type != IPV6_DSTOPTS)) + (!is_ipv6_hopopts(cmsg->cmsg_type) && + !is_ipv6_dstopts(cmsg->cmsg_type))) return(-1); /* message length validation */ @@ -290,8 +302,8 @@ inet6_option_find(const struct cmsghdr *cmsg, u_int8_t **tptrp, int type) u_int8_t *optp, *lim; if (cmsg->cmsg_level != IPPROTO_IPV6 || - (cmsg->cmsg_type != IPV6_HOPOPTS && - cmsg->cmsg_type != IPV6_DSTOPTS)) + (!is_ipv6_hopopts(cmsg->cmsg_type) && + !is_ipv6_dstopts(cmsg->cmsg_type))) return(-1); /* message length validation */ -- 2.45.0