diff options
| 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/cong.c | |
| parent | a6c90dd321bfeb5e48fc2eb6623b7b976106f6d7 (diff) | |
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/cong.c')
| -rw-r--r-- | net/rds/cong.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/net/rds/cong.c b/net/rds/cong.c index 63da9d2f142d..ccdff09a79c8 100644 --- a/net/rds/cong.c +++ b/net/rds/cong.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2007 Oracle. All rights reserved. + * Copyright (c) 2007, 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 @@ -101,7 +101,7 @@ static DEFINE_RWLOCK(rds_cong_monitor_lock); static DEFINE_SPINLOCK(rds_cong_lock); static struct rb_root rds_cong_tree = RB_ROOT; -static struct rds_cong_map *rds_cong_tree_walk(__be32 addr, +static struct rds_cong_map *rds_cong_tree_walk(const struct in6_addr *addr, struct rds_cong_map *insert) { struct rb_node **p = &rds_cong_tree.rb_node; @@ -109,12 +109,15 @@ static struct rds_cong_map *rds_cong_tree_walk(__be32 addr, struct rds_cong_map *map; while (*p) { + int diff; + parent = *p; map = rb_entry(parent, struct rds_cong_map, m_rb_node); - if (addr < map->m_addr) + diff = rds_addr_cmp(addr, &map->m_addr); + if (diff < 0) p = &(*p)->rb_left; - else if (addr > map->m_addr) + else if (diff > 0) p = &(*p)->rb_right; else return map; @@ -132,7 +135,7 @@ static struct rds_cong_map *rds_cong_tree_walk(__be32 addr, * these bitmaps in the process getting pointers to them. The bitmaps are only * ever freed as the module is removed after all connections have been freed. */ -static struct rds_cong_map *rds_cong_from_addr(__be32 addr) +static struct rds_cong_map *rds_cong_from_addr(const struct in6_addr *addr) { struct rds_cong_map *map; struct rds_cong_map *ret = NULL; @@ -144,7 +147,7 @@ static struct rds_cong_map *rds_cong_from_addr(__be32 addr) if (!map) return NULL; - map->m_addr = addr; + map->m_addr = *addr; init_waitqueue_head(&map->m_waitq); INIT_LIST_HEAD(&map->m_conn_list); @@ -171,7 +174,7 @@ out: kfree(map); } - rdsdebug("map %p for addr %x\n", ret, be32_to_cpu(addr)); + rdsdebug("map %p for addr %pI6c\n", ret, addr); return ret; } @@ -202,8 +205,8 @@ void rds_cong_remove_conn(struct rds_connection *conn) int rds_cong_get_maps(struct rds_connection *conn) { - conn->c_lcong = rds_cong_from_addr(conn->c_laddr); - conn->c_fcong = rds_cong_from_addr(conn->c_faddr); + conn->c_lcong = rds_cong_from_addr(&conn->c_laddr); + conn->c_fcong = rds_cong_from_addr(&conn->c_faddr); if (!(conn->c_lcong && conn->c_fcong)) return -ENOMEM; @@ -353,7 +356,7 @@ void rds_cong_remove_socket(struct rds_sock *rs) /* update congestion map for now-closed port */ spin_lock_irqsave(&rds_cong_lock, flags); - map = rds_cong_tree_walk(rs->rs_bound_addr, NULL); + map = rds_cong_tree_walk(&rs->rs_bound_addr, NULL); spin_unlock_irqrestore(&rds_cong_lock, flags); if (map && rds_cong_test_bit(map, rs->rs_bound_port)) { |