diff options
| author | David Ahern <dsahern@gmail.com> | 2018-03-02 19:32:13 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-03-04 21:04:21 +0300 |
| commit | 6f74b6c259158d89ad258cda8e86240e01052884 (patch) | |
| tree | d699755e3d90c8108fc4263bb437be62b8c9f9e8 | |
| parent | 7efc0b6b666d757e07417f59397e7f5f340e74e0 (diff) | |
| download | linux-6f74b6c259158d89ad258cda8e86240e01052884.tar.xz | |
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.c | 20 | ||||
| -rw-r--r-- | net/ipv6/route.c | 4 |
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; } |