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author | Eric Dumazet <eric.dumazet@gmail.com> | 2011-11-29 03:40:45 +0000 |
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committer | David S. Miller <davem@davemloft.net> | 2011-11-29 13:17:03 -0500 |
commit | 11fca931d35a34d01ce209eb8d51ff667c9f5e7c (patch) | |
tree | 540b10f69a7a6c5249674cc1c67f231443fb6c47 /net/sched | |
parent | f07d960df33c5aef8f513efce0fd201f962f94a1 (diff) | |
download | linux-stable-11fca931d35a34d01ce209eb8d51ff667c9f5e7c.tar.gz linux-stable-11fca931d35a34d01ce209eb8d51ff667c9f5e7c.tar.bz2 linux-stable-11fca931d35a34d01ce209eb8d51ff667c9f5e7c.zip |
sch_sfq: use skb_flow_dissect()
Instead of using a custom flow dissector, use skb_flow_dissect() and
benefit from tunnelling support.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched')
-rw-r--r-- | net/sched/sch_sfq.c | 65 |
1 files changed, 10 insertions, 55 deletions
diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c index 4f5510e2bd6f..30cda707e400 100644 --- a/net/sched/sch_sfq.c +++ b/net/sched/sch_sfq.c @@ -17,14 +17,13 @@ #include <linux/in.h> #include <linux/errno.h> #include <linux/init.h> -#include <linux/ipv6.h> #include <linux/skbuff.h> #include <linux/jhash.h> #include <linux/slab.h> #include <linux/vmalloc.h> -#include <net/ip.h> #include <net/netlink.h> #include <net/pkt_sched.h> +#include <net/flow_keys.h> /* Stochastic Fairness Queuing algorithm. @@ -137,61 +136,17 @@ static inline struct sfq_head *sfq_dep_head(struct sfq_sched_data *q, sfq_index return &q->dep[val - SFQ_SLOTS]; } -static unsigned int sfq_fold_hash(struct sfq_sched_data *q, u32 h, u32 h1) +static unsigned int sfq_hash(const struct sfq_sched_data *q, + const struct sk_buff *skb) { - return jhash_2words(h, h1, q->perturbation) & (q->divisor - 1); -} - -static unsigned int sfq_hash(struct sfq_sched_data *q, struct sk_buff *skb) -{ - u32 h, h2; - - switch (skb->protocol) { - case htons(ETH_P_IP): - { - const struct iphdr *iph; - int poff; - - if (!pskb_network_may_pull(skb, sizeof(*iph))) - goto err; - iph = ip_hdr(skb); - h = (__force u32)iph->daddr; - h2 = (__force u32)iph->saddr ^ iph->protocol; - if (ip_is_fragment(iph)) - break; - poff = proto_ports_offset(iph->protocol); - if (poff >= 0 && - pskb_network_may_pull(skb, iph->ihl * 4 + 4 + poff)) { - iph = ip_hdr(skb); - h2 ^= *(u32 *)((void *)iph + iph->ihl * 4 + poff); - } - break; - } - case htons(ETH_P_IPV6): - { - const struct ipv6hdr *iph; - int poff; - - if (!pskb_network_may_pull(skb, sizeof(*iph))) - goto err; - iph = ipv6_hdr(skb); - h = (__force u32)iph->daddr.s6_addr32[3]; - h2 = (__force u32)iph->saddr.s6_addr32[3] ^ iph->nexthdr; - poff = proto_ports_offset(iph->nexthdr); - if (poff >= 0 && - pskb_network_may_pull(skb, sizeof(*iph) + 4 + poff)) { - iph = ipv6_hdr(skb); - h2 ^= *(u32 *)((void *)iph + sizeof(*iph) + poff); - } - break; - } - default: -err: - h = (unsigned long)skb_dst(skb) ^ (__force u32)skb->protocol; - h2 = (unsigned long)skb->sk; - } + struct flow_keys keys; + unsigned int hash; - return sfq_fold_hash(q, h, h2); + skb_flow_dissect(skb, &keys); + hash = jhash_3words((__force u32)keys.dst, + (__force u32)keys.src ^ keys.ip_proto, + (__force u32)keys.ports, q->perturbation); + return hash & (q->divisor - 1); } static unsigned int sfq_classify(struct sk_buff *skb, struct Qdisc *sch, |