From 8e71a11c9f3c09a01fcb445772ffd61b140f2479 Mon Sep 17 00:00:00 2001 From: Vlad Yasevich Date: Thu, 6 Dec 2007 22:50:54 -0800 Subject: [SCTP]: Fix the bind_addr info during migration. During accept/migrate the code attempts to copy the addresses from the parent endpoint to the new endpoint. However, if the parent was bound to a wildcard address, then we end up pointlessly copying all of the current addresses on the system. Signed-off-by: Vlad Yasevich Signed-off-by: David S. Miller --- net/sctp/bind_addr.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'net/sctp/bind_addr.c') diff --git a/net/sctp/bind_addr.c b/net/sctp/bind_addr.c index cae95af9a8cc..6a7d01091f0c 100644 --- a/net/sctp/bind_addr.c +++ b/net/sctp/bind_addr.c @@ -105,6 +105,32 @@ out: return error; } +/* Exactly duplicate the address lists. This is necessary when doing + * peer-offs and accepts. We don't want to put all the current system + * addresses into the endpoint. That's useless. But we do want duplicat + * the list of bound addresses that the older endpoint used. + */ +int sctp_bind_addr_dup(struct sctp_bind_addr *dest, + const struct sctp_bind_addr *src, + gfp_t gfp) +{ + struct sctp_sockaddr_entry *addr; + struct list_head *pos; + int error = 0; + + /* All addresses share the same port. */ + dest->port = src->port; + + list_for_each(pos, &src->address_list) { + addr = list_entry(pos, struct sctp_sockaddr_entry, list); + error = sctp_add_bind_addr(dest, &addr->a, 1, gfp); + if (error < 0) + break; + } + + return error; +} + /* Initialize the SCTP_bind_addr structure for either an endpoint or * an association. */ -- cgit v1.2.1