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| author | Ka-Cheong Poon <ka-cheong.poon@oracle.com> | 2018-07-23 20:51:21 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-07-23 21:17:44 -0700 |
| commit | eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 (patch) | |
| tree | 3031ff1c766052744eb5dc7c373ea25bebd75f36 /net/rds/transport.c | |
| parent | a6c90dd321bfeb5e48fc2eb6623b7b976106f6d7 (diff) | |
| download | linux-eee2fa6ab3225192d6d894c54a6fb02ac9efdff6.tar.bz2 | |
rds: Changing IP address internal representation to struct in6_addr
This patch changes the internal representation of an IP address to use
struct in6_addr. IPv4 address is stored as an IPv4 mapped address.
All the functions which take an IP address as argument are also
changed to use struct in6_addr. But RDS socket layer is not modified
such that it still does not accept IPv6 address from an application.
And RDS layer does not accept nor initiate IPv6 connections.
v2: Fixed sparse warnings.
Signed-off-by: Ka-Cheong Poon <ka-cheong.poon@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rds/transport.c')
| -rw-r--r-- | net/rds/transport.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/net/rds/transport.c b/net/rds/transport.c index 0b188dd0a344..c9788dbce441 100644 --- a/net/rds/transport.c +++ b/net/rds/transport.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2006 Oracle. All rights reserved. + * Copyright (c) 2006, 2017 Oracle and/or its affiliates. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU @@ -33,6 +33,7 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/in.h> +#include <linux/ipv6.h> #include "rds.h" #include "loop.h" @@ -75,20 +76,26 @@ void rds_trans_put(struct rds_transport *trans) module_put(trans->t_owner); } -struct rds_transport *rds_trans_get_preferred(struct net *net, __be32 addr) +struct rds_transport *rds_trans_get_preferred(struct net *net, + const struct in6_addr *addr, + __u32 scope_id) { struct rds_transport *ret = NULL; struct rds_transport *trans; unsigned int i; - if (IN_LOOPBACK(ntohl(addr))) + if (ipv6_addr_v4mapped(addr)) { + if (*(u_int8_t *)&addr->s6_addr32[3] == IN_LOOPBACKNET) + return &rds_loop_transport; + } else if (ipv6_addr_loopback(addr)) { return &rds_loop_transport; + } down_read(&rds_trans_sem); for (i = 0; i < RDS_TRANS_COUNT; i++) { trans = transports[i]; - if (trans && (trans->laddr_check(net, addr) == 0) && + if (trans && (trans->laddr_check(net, addr, scope_id) == 0) && (!trans->t_owner || try_module_get(trans->t_owner))) { ret = trans; break; |