diff options
| author | Roopa Prabhu <roopa@cumulusnetworks.com> | 2018-02-28 22:43:22 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-02-28 22:44:44 -0500 |
| commit | 5e5d6fed374155ba1a7a5ca5f12fbec2285d06a2 (patch) | |
| tree | 92e19ce9d5e58ee33bbface8a6b5f4001c28a06c /include/net/ip6_fib.h | |
| parent | e37b1e978bec5334dc379d8c2423d063af207430 (diff) | |
ipv6: route: dissect flow in input path if fib rules need it
Dissect flow in fwd path if fib rules require it. Controlled by
a flag to avoid penatly for the common case. Flag is set when fib
rules with sport, dport and proto match that require flow dissect
are installed. Also passes the dissected hash keys to the multipath
hash function when applicable to avoid dissecting the flow again.
icmp packets will continue to use inner header for hash
calculations.
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.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 | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h index 34ec321d6a03..8d906a35b534 100644 --- a/include/net/ip6_fib.h +++ b/include/net/ip6_fib.h @@ -415,6 +415,24 @@ void fib6_rules_cleanup(void); bool fib6_rule_default(const struct fib_rule *rule); int fib6_rules_dump(struct net *net, struct notifier_block *nb); unsigned int fib6_rules_seq_read(struct net *net); + +static inline bool fib6_rules_early_flow_dissect(struct net *net, + struct sk_buff *skb, + struct flowi6 *fl6, + struct flow_keys *flkeys) +{ + unsigned int flag = FLOW_DISSECTOR_F_STOP_AT_ENCAP; + + if (!net->ipv6.fib6_rules_require_fldissect) + return false; + + skb_flow_dissect_flow_keys(skb, flkeys, flag); + fl6->fl6_sport = flkeys->ports.src; + fl6->fl6_dport = flkeys->ports.dst; + fl6->flowi6_proto = flkeys->basic.ip_proto; + + return true; +} #else static inline int fib6_rules_init(void) { @@ -436,5 +454,12 @@ static inline unsigned int fib6_rules_seq_read(struct net *net) { return 0; } +static inline bool fib6_rules_early_flow_dissect(struct net *net, + struct sk_buff *skb, + struct flowi6 *fl6, + struct flow_keys *flkeys) +{ + return false; +} #endif #endif |