diff options
| author | Tom Herbert <tom@herbertland.com> | 2015-06-04 18:16:40 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-06-05 00:44:30 +0200 |
| commit | c3f8324188fa80178f20c8209b492ca6191177e8 (patch) | |
| tree | 7a79eea92ad702932fd81977118f6ab6394a9769 /net/sched | |
| parent | net: Get skb hash over flow_keys structure (diff) | |
| download | linux-c3f8324188fa80178f20c8209b492ca6191177e8.tar.xz linux-c3f8324188fa80178f20c8209b492ca6191177e8.zip | |
net: Add full IPv6 addresses to flow_keys
This patch adds full IPv6 addresses into flow_keys and uses them as
input to the flow hash function. The implementation supports either
IPv4 or IPv6 addresses in a union, and selector is used to determine
how may words to input to jhash2.
We also add flow_get_u32_dst and flow_get_u32_src functions which are
used to get a u32 representation of the source and destination
addresses. For IPv6, ipv6_addr_hash is called. These functions retain
getting the legacy values of src and dst in flow_keys.
With this patch, Ethertype and IP protocol are now included in the
flow hash input.
Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched')
| -rw-r--r-- | net/sched/cls_flow.c | 14 | ||||
| -rw-r--r-- | net/sched/cls_flower.c | 11 |
2 files changed, 16 insertions, 9 deletions
diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c index b4359924846c..76bc3a20ffdb 100644 --- a/net/sched/cls_flow.c +++ b/net/sched/cls_flow.c @@ -68,15 +68,21 @@ static inline u32 addr_fold(void *addr) static u32 flow_get_src(const struct sk_buff *skb, const struct flow_keys *flow) { - if (flow->addrs.src) - return ntohl(flow->addrs.src); + __be32 src = flow_get_u32_src(flow); + + if (src) + return ntohl(src); + return addr_fold(skb->sk); } static u32 flow_get_dst(const struct sk_buff *skb, const struct flow_keys *flow) { - if (flow->addrs.dst) - return ntohl(flow->addrs.dst); + __be32 dst = flow_get_u32_dst(flow); + + if (dst) + return ntohl(dst); + return addr_fold(skb_dst(skb)) ^ (__force u16) tc_skb_protocol(skb); } diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c index 5a7d66c59684..b92d3f49c23e 100644 --- a/net/sched/cls_flower.c +++ b/net/sched/cls_flower.c @@ -28,8 +28,9 @@ struct fl_flow_key { struct flow_dissector_key_control control; struct flow_dissector_key_basic basic; struct flow_dissector_key_eth_addrs eth; + struct flow_dissector_key_addrs ipaddrs; union { - struct flow_dissector_key_addrs ipv4; + struct flow_dissector_key_ipv4_addrs ipv4; struct flow_dissector_key_ipv6_addrs ipv6; }; struct flow_dissector_key_ports tp; @@ -260,14 +261,14 @@ static int fl_set_key(struct net *net, struct nlattr **tb, &mask->basic.ip_proto, TCA_FLOWER_UNSPEC, sizeof(key->basic.ip_proto)); } - if (key->basic.n_proto == htons(ETH_P_IP)) { + if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC, &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK, sizeof(key->ipv4.src)); fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST, &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK, sizeof(key->ipv4.dst)); - } else if (key->basic.n_proto == htons(ETH_P_IPV6)) { + } else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC, &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK, sizeof(key->ipv6.src)); @@ -610,7 +611,7 @@ static int fl_dump(struct net *net, struct tcf_proto *tp, unsigned long fh, sizeof(key->basic.ip_proto))) goto nla_put_failure; - if (key->basic.n_proto == htons(ETH_P_IP) && + if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS && (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC, &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK, sizeof(key->ipv4.src)) || @@ -618,7 +619,7 @@ static int fl_dump(struct net *net, struct tcf_proto *tp, unsigned long fh, &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK, sizeof(key->ipv4.dst)))) goto nla_put_failure; - else if (key->basic.n_proto == htons(ETH_P_IPV6) && + else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS && (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC, &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK, sizeof(key->ipv6.src)) || |