diff options
| author |   David Ahern <dsahern@gmail.com> | 2018-09-10 17:21:42 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-09-12 00:08:00 -0700 |
| commit | 67edf21e5adfd336f2ff08668eb09850943666d3 (patch) | |
| tree | b0bb1659585480d3669539da7fd790cee1c03b5c /include/net/ip6_fib.h | |
| parent | net: dsa: b53: Only call b53_port_event() for SGMII ports (diff) | |
| download | linux-dev-67edf21e5adfd336f2ff08668eb09850943666d3.tar.xz linux-dev-67edf21e5adfd336f2ff08668eb09850943666d3.zip | |
scsi: libcxgbi: fib6_ino reference in rt6_info is rcu protected
The fib6_info reference in rt6_info is rcu protected. Add a helper
to extract prefsrc from and update cxgbi_check_route6 to use it.
Fixes: 0153167aebd0 ("net/ipv6: Remove rt6i_prefsrc")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/ip6_fib.h')
| -rw-r--r-- | include/net/ip6_fib.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h index c7496663f99a..f06e968f1992 100644 --- a/include/net/ip6_fib.h +++ b/include/net/ip6_fib.h @@ -412,6 +412,25 @@ int fib6_add(struct fib6_node *root, struct fib6_info *rt, struct nl_info *info, struct netlink_ext_ack *extack); int fib6_del(struct fib6_info *rt, struct nl_info *info); +static inline +void rt6_get_prefsrc(const struct rt6_info *rt, struct in6_addr *addr) +{ + const struct fib6_info *from; + + rcu_read_lock(); + + from = rcu_dereference(rt->from); + if (from) { + *addr = from->fib6_prefsrc.addr; + } else { + struct in6_addr in6_zero = {}; + + *addr = in6_zero; + } + + rcu_read_unlock(); +} + static inline struct net_device *fib6_info_nh_dev(const struct fib6_info *f6i) { return f6i->fib6_nh.nh_dev; |