summaryrefslogtreecommitdiff
path: root/net/core
diff options
context:
space:
mode:
authorDavid Ahern <dsahern@gmail.com>2019-04-05 16:30:35 -0700
committerDavid S. Miller <davem@davemloft.net>2019-04-08 15:22:41 -0700
commit6f5f68d05ec0f648a4e59a07442d663d1e1a4d2f (patch)
treeb17c5f9fa729008dcc07b038c1ad2d27b2970265 /net/core
parent5c9f7c1dfc2e0776551ef1ceb335187c6698d1ff (diff)
bpf: Handle ipv6 gateway in bpf_ipv4_fib_lookup
Update bpf_ipv4_fib_lookup to handle an ipv6 gateway. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/filter.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/net/core/filter.c b/net/core/filter.c
index abd5b6ce031a..41f633cf4fc1 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -4639,15 +4639,26 @@ static int bpf_ipv4_fib_lookup(struct net *net, struct bpf_fib_lookup *params,
return BPF_FIB_LKUP_RET_UNSUPP_LWT;
dev = nhc->nhc_dev;
- if (nhc->nhc_gw_family)
- params->ipv4_dst = nhc->nhc_gw.ipv4;
params->rt_metric = res.fi->fib_priority;
/* xdp and cls_bpf programs are run in RCU-bh so
* rcu_read_lock_bh is not needed here
*/
- neigh = __ipv4_neigh_lookup_noref(dev, (__force u32)params->ipv4_dst);
+ if (likely(nhc->nhc_gw_family != AF_INET6)) {
+ if (nhc->nhc_gw_family)
+ params->ipv4_dst = nhc->nhc_gw.ipv4;
+
+ neigh = __ipv4_neigh_lookup_noref(dev,
+ (__force u32)params->ipv4_dst);
+ } else {
+ struct in6_addr *dst = (struct in6_addr *)params->ipv6_dst;
+
+ params->family = AF_INET6;
+ *dst = nhc->nhc_gw.ipv6;
+ neigh = __ipv6_neigh_lookup_noref_stub(dev, dst);
+ }
+
if (!neigh)
return BPF_FIB_LKUP_RET_NO_NEIGH;