diff options
Diffstat (limited to 'sys/netinet6/in6_pcb.c')
| -rw-r--r-- | sys/netinet6/in6_pcb.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/sys/netinet6/in6_pcb.c b/sys/netinet6/in6_pcb.c index a19a1eb..1c7278c 100644 --- a/sys/netinet6/in6_pcb.c +++ b/sys/netinet6/in6_pcb.c @@ -610,12 +610,13 @@ in6_mapped_peeraddr(struct socket *so, struct sockaddr **nam) * Must be called at splnet. */ void -in6_pcbnotify(head, dst, fport_arg, src, lport_arg, cmd, notify) +in6_pcbnotify(head, dst, fport_arg, src, lport_arg, cmd, cmdarg, notify) struct inpcbhead *head; struct sockaddr *dst; const struct sockaddr *src; u_int fport_arg, lport_arg; int cmd; + void *cmdarg; struct inpcb *(*notify) __P((struct inpcb *, int)); { struct inpcb *inp, *ninp; @@ -662,6 +663,22 @@ in6_pcbnotify(head, dst, fport_arg, src, lport_arg, cmd, notify) continue; /* + * If the error designates a new path MTU for a destination + * and the application (associated with this socket) wanted to + * know the value, notify. Note that we notify for all + * disconnected sockets if the corresponding application + * wanted. This is because some UDP applications keep sending + * sockets disconnected. + * XXX: should we avoid to notify the value to TCP sockets? + */ + if (cmd == PRC_MSGSIZE && (inp->inp_flags & IN6P_MTU) != 0 && + (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) || + IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, &sa6_dst->sin6_addr))) { + ip6_notify_pmtu(inp, (struct sockaddr_in6 *)dst, + (u_int32_t *)cmdarg); + } + + /* * Detect if we should notify the error. If no source and * destination ports are specifed, but non-zero flowinfo and * local address match, notify the error. This is the case |
