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net_sched: act_csum: coding style cleanup

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Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Changli Gao 2010-08-23 03:27:58 +00:00 committed by David S. Miller
parent 7abac68602
commit 0eec32ff35
1 changed files with 38 additions and 39 deletions
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77
net/sched/act_csum.c
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@ -42,9 +42,9 @@ static u32 csum_idx_gen;
static DEFINE_RWLOCK(csum_lock);
static struct tcf_hashinfo csum_hash_info = {
.htab = tcf_csum_ht,
.hmask = CSUM_TAB_MASK,
.lock = &csum_lock,
.htab = tcf_csum_ht,
.hmask = CSUM_TAB_MASK,
.lock = &csum_lock,
};
static const struct nla_policy csum_policy[TCA_CSUM_MAX + 1] = {
@ -73,7 +73,8 @@ static int tcf_csum_init(struct nlattr *nla, struct nlattr *est,
pc = tcf_hash_check(parm->index, a, bind, &csum_hash_info);
if (!pc) {
pc = tcf_hash_create(parm->index, est, a, sizeof(*p), bind, &csum_idx_gen, &csum_hash_info);
pc = tcf_hash_create(parm->index, est, a, sizeof(*p), bind,
&csum_idx_gen, &csum_hash_info);
if (IS_ERR(pc))
return PTR_ERR(pc);
p = to_tcf_csum(pc);
@ -230,8 +231,9 @@ static int tcf_csum_ipv4_udp(struct sk_buff *skb, struct iphdr *iph,
struct udphdr *udph;
u16 ul;
/* Support both UDP and UDPLITE checksum algorithms,
* Don't use udph->len to get the real length without any protocol check,
/*
* Support both UDP and UDPLITE checksum algorithms, Don't use
* udph->len to get the real length without any protocol check,
* UDPLITE uses udph->len for another thing,
* Use iph->tot_len, or just ipl.
*/
@ -249,10 +251,8 @@ static int tcf_csum_ipv4_udp(struct sk_buff *skb, struct iphdr *iph,
if (udplite) {
if (ul == 0)
skb->csum = csum_partial(udph, ipl - ihl, 0);
else if ((ul >= sizeof(*udph)) && (ul <= ipl - ihl))
skb->csum = csum_partial(udph, ul, 0);
else
goto ignore_obscure_skb;
} else {
@ -282,8 +282,9 @@ static int tcf_csum_ipv6_udp(struct sk_buff *skb, struct ipv6hdr *ip6h,
struct udphdr *udph;
u16 ul;
/* Support both UDP and UDPLITE checksum algorithms,
* Don't use udph->len to get the real length without any protocol check,
/*
* Support both UDP and UDPLITE checksum algorithms, Don't use
* udph->len to get the real length without any protocol check,
* UDPLITE uses udph->len for another thing,
* Use ip6h->payload_len + sizeof(*ip6h) ... , or just ipl.
*/
@ -340,32 +341,32 @@ static int tcf_csum_ipv4(struct sk_buff *skb, u32 update_flags)
switch (iph->frag_off & htons(IP_OFFSET) ? 0 : iph->protocol) {
case IPPROTO_ICMP:
if (update_flags & TCA_CSUM_UPDATE_FLAG_ICMP)
if (!tcf_csum_ipv4_icmp(skb,
iph->ihl * 4, ntohs(iph->tot_len)))
if (!tcf_csum_ipv4_icmp(skb, iph->ihl * 4,
ntohs(iph->tot_len)))
goto fail;
break;
case IPPROTO_IGMP:
if (update_flags & TCA_CSUM_UPDATE_FLAG_IGMP)
if (!tcf_csum_ipv4_igmp(skb,
iph->ihl * 4, ntohs(iph->tot_len)))
if (!tcf_csum_ipv4_igmp(skb, iph->ihl * 4,
ntohs(iph->tot_len)))
goto fail;
break;
case IPPROTO_TCP:
if (update_flags & TCA_CSUM_UPDATE_FLAG_TCP)
if (!tcf_csum_ipv4_tcp(skb, iph,
iph->ihl * 4, ntohs(iph->tot_len)))
if (!tcf_csum_ipv4_tcp(skb, iph, iph->ihl * 4,
ntohs(iph->tot_len)))
goto fail;
break;
case IPPROTO_UDP:
if (update_flags & TCA_CSUM_UPDATE_FLAG_UDP)
if (!tcf_csum_ipv4_udp(skb, iph,
iph->ihl * 4, ntohs(iph->tot_len), 0))
if (!tcf_csum_ipv4_udp(skb, iph, iph->ihl * 4,
ntohs(iph->tot_len), 0))
goto fail;
break;
case IPPROTO_UDPLITE:
if (update_flags & TCA_CSUM_UPDATE_FLAG_UDPLITE)
if (!tcf_csum_ipv4_udp(skb, iph,
iph->ihl * 4, ntohs(iph->tot_len), 1))
if (!tcf_csum_ipv4_udp(skb, iph, iph->ihl * 4,
ntohs(iph->tot_len), 1))
goto fail;
break;
}
@ -386,7 +387,7 @@ fail:
}
static int tcf_csum_ipv6_hopopts(struct ipv6_opt_hdr *ip6xh,
unsigned int ixhl, unsigned int *pl)
unsigned int ixhl, unsigned int *pl)
{
int off, len, optlen;
unsigned char *xh = (void *)ip6xh;
@ -395,8 +396,7 @@ static int tcf_csum_ipv6_hopopts(struct ipv6_opt_hdr *ip6xh,
len = ixhl - off;
while (len > 1) {
switch (xh[off])
{
switch (xh[off]) {
case IPV6_TLV_PAD0:
optlen = 1;
break;
@ -476,14 +476,14 @@ static int tcf_csum_ipv6(struct sk_buff *skb, u32 update_flags)
goto done;
case IPPROTO_UDP:
if (update_flags & TCA_CSUM_UPDATE_FLAG_UDP)
if (!tcf_csum_ipv6_udp(skb, ip6h,
hl, pl + sizeof(*ip6h), 0))
if (!tcf_csum_ipv6_udp(skb, ip6h, hl,
pl + sizeof(*ip6h), 0))
goto fail;
goto done;
case IPPROTO_UDPLITE:
if (update_flags & TCA_CSUM_UPDATE_FLAG_UDPLITE)
if (!tcf_csum_ipv6_udp(skb, ip6h,
hl, pl + sizeof(*ip6h), 1))
if (!tcf_csum_ipv6_udp(skb, ip6h, hl,
pl + sizeof(*ip6h), 1))
goto fail;
goto done;
default:
@ -544,7 +544,6 @@ static int tcf_csum_dump(struct sk_buff *skb,
struct tcf_csum *p = a->priv;
struct tc_csum opt = {
.update_flags = p->update_flags,
.index = p->tcf_index,
.action = p->tcf_action,
.refcnt = p->tcf_refcnt - ref,
@ -566,17 +565,17 @@ nla_put_failure:
}
static struct tc_action_ops act_csum_ops = {
.kind = "csum",
.hinfo = &csum_hash_info,
.type = TCA_ACT_CSUM,
.capab = TCA_CAP_NONE,
.owner = THIS_MODULE,
.act = tcf_csum,
.dump = tcf_csum_dump,
.cleanup = tcf_csum_cleanup,
.lookup = tcf_hash_search,
.init = tcf_csum_init,
.walk = tcf_generic_walker
.kind = "csum",
.hinfo = &csum_hash_info,
.type = TCA_ACT_CSUM,
.capab = TCA_CAP_NONE,
.owner = THIS_MODULE,
.act = tcf_csum,
.dump = tcf_csum_dump,
.cleanup = tcf_csum_cleanup,
.lookup = tcf_hash_search,
.init = tcf_csum_init,
.walk = tcf_generic_walker
};
MODULE_DESCRIPTION("Checksum updating actions");