aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorDavid Ahern <dsahern@gmail.com>2018-03-02 08:32:13 -0800
committerDavid S. Miller <davem@davemloft.net>2018-03-04 13:04:21 -0500
commit6f74b6c259158d89ad258cda8e86240e01052884 (patch)
treed699755e3d90c8108fc4263bb437be62b8c9f9e8
parentnet/ipv4: Pass net to fib_multipath_hash instead of fib_info (diff)
downloadlinux-dev-6f74b6c259158d89ad258cda8e86240e01052884.tar.xz
linux-dev-6f74b6c259158d89ad258cda8e86240e01052884.zip
net: Align ip_multipath_l3_keys and ip6_multipath_l3_keys
Symmetry is good and allows easy comparison that ipv4 and ipv6 are doing the same thing. To that end, change ip_multipath_l3_keys to set addresses at the end after the icmp compares, and move the initialization of ipv6 flow keys to rt6_multipath_hash. Signed-off-by: David Ahern <dsahern@gmail.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/ipv4/route.c20
-rw-r--r--net/ipv6/route.c4
2 files changed, 13 insertions, 11 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 1689c569bbc3..df57bc68e8e0 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1748,37 +1748,39 @@ static void ip_multipath_l3_keys(const struct sk_buff *skb,
struct flow_keys *hash_keys)
{
const struct iphdr *outer_iph = ip_hdr(skb);
+ const struct iphdr *key_iph = outer_iph;
const struct iphdr *inner_iph;
const struct icmphdr *icmph;
struct iphdr _inner_iph;
struct icmphdr _icmph;
- hash_keys->addrs.v4addrs.src = outer_iph->saddr;
- hash_keys->addrs.v4addrs.dst = outer_iph->daddr;
if (likely(outer_iph->protocol != IPPROTO_ICMP))
- return;
+ goto out;
if (unlikely((outer_iph->frag_off & htons(IP_OFFSET)) != 0))
- return;
+ goto out;
icmph = skb_header_pointer(skb, outer_iph->ihl * 4, sizeof(_icmph),
&_icmph);
if (!icmph)
- return;
+ goto out;
if (icmph->type != ICMP_DEST_UNREACH &&
icmph->type != ICMP_REDIRECT &&
icmph->type != ICMP_TIME_EXCEEDED &&
icmph->type != ICMP_PARAMETERPROB)
- return;
+ goto out;
inner_iph = skb_header_pointer(skb,
outer_iph->ihl * 4 + sizeof(_icmph),
sizeof(_inner_iph), &_inner_iph);
if (!inner_iph)
- return;
- hash_keys->addrs.v4addrs.src = inner_iph->saddr;
- hash_keys->addrs.v4addrs.dst = inner_iph->daddr;
+ goto out;
+
+ key_iph = inner_iph;
+out:
+ hash_keys->addrs.v4addrs.src = key_iph->saddr;
+ hash_keys->addrs.v4addrs.dst = key_iph->daddr;
}
/* if skb is set it will be used and fl4 can be NULL */
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index e2bb40824c85..190d9690dfe0 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1815,8 +1815,6 @@ static void ip6_multipath_l3_keys(const struct sk_buff *skb,
key_iph = inner_iph;
_flkeys = NULL;
out:
- memset(keys, 0, sizeof(*keys));
- keys->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
if (_flkeys) {
keys->addrs.v6addrs.src = _flkeys->addrs.v6addrs.src;
keys->addrs.v6addrs.dst = _flkeys->addrs.v6addrs.dst;
@@ -1837,6 +1835,8 @@ u32 rt6_multipath_hash(const struct flowi6 *fl6, const struct sk_buff *skb,
struct flow_keys hash_keys;
if (skb) {
+ memset(&hash_keys, 0, sizeof(hash_keys));
+ hash_keys.control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
ip6_multipath_l3_keys(skb, &hash_keys, flkeys);
return flow_hash_from_keys(&hash_keys) >> 1;
}