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netfilter: nf_tables: kill nft_pktinfo.ops

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- Add nft_pktinfo.pf to replace ops->pf
- Add nft_pktinfo.hook to replace ops->hooknum

This simplifies the code, makes it more readable, and likely reduces
cache line misses.  Maintainability is enhanced as the details of
nft_hook_ops are of no concern to the recpients of nft_pktinfo.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Eric W. Biederman
2015-09-18 14:32:57 -05:00
committed by Pablo Neira Ayuso
parent 082a758f04
commit 6aa187f21c
25 changed files with 54 additions and 64 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/net/netfilter/nf_tables.h
+4 -5
View File
@@ -16,7 +16,8 @@ struct nft_pktinfo {
struct sk_buff *skb;
const struct net_device *in;
const struct net_device *out;
const struct nf_hook_ops *ops;
u8 pf;
u8 hook;
u8 nhoff;
u8 thoff;
u8 tprot;
@@ -25,16 +26,14 @@ struct nft_pktinfo {
};
static inline void nft_set_pktinfo(struct nft_pktinfo *pkt,
const struct nf_hook_ops *ops,
struct sk_buff *skb,
const struct nf_hook_state *state)
{
pkt->skb = skb;
pkt->in = pkt->xt.in = state->in;
pkt->out = pkt->xt.out = state->out;
pkt->ops = ops;
pkt->xt.hooknum = ops->hooknum;
pkt->xt.family = ops->pf;
pkt->hook = pkt->xt.hooknum = state->hook;
pkt->pf = pkt->xt.family = state->pf;
}
/**
include/net/netfilter/nf_tables_ipv4.h
+1 -2
View File
@@ -6,13 +6,12 @@
static inline void
nft_set_pktinfo_ipv4(struct nft_pktinfo *pkt,
const struct nf_hook_ops *ops,
struct sk_buff *skb,
const struct nf_hook_state *state)
{
struct iphdr *ip;
nft_set_pktinfo(pkt, ops, skb, state);
nft_set_pktinfo(pkt, skb, state);
ip = ip_hdr(pkt->skb);
pkt->tprot = ip->protocol;
include/net/netfilter/nf_tables_ipv6.h
+1 -2
View File
@@ -6,14 +6,13 @@
static inline int
nft_set_pktinfo_ipv6(struct nft_pktinfo *pkt,
const struct nf_hook_ops *ops,
struct sk_buff *skb,
const struct nf_hook_state *state)
{
int protohdr, thoff = 0;
unsigned short frag_off;
nft_set_pktinfo(pkt, ops, skb, state);
nft_set_pktinfo(pkt, skb, state);
protohdr = ipv6_find_hdr(pkt->skb, &thoff, -1, &frag_off, NULL);
/* If malformed, drop it */