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authorDavid S. Miller <davem@davemloft.net>2010-06-06 17:42:02 -0700
committerDavid S. Miller <davem@davemloft.net>2010-06-06 17:42:02 -0700
commiteedc765ca4b19a41cf0b921a492ac08d640060d1 (patch)
tree95c566c6238cc953e1e336115d2daafe8bcb388f /net/sched
parente59d44df46edaafb6b637e98d046775524b31104 (diff)
parent024a07bacf8287a6ddfa83e9d5b951c5e8b4070e (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts: drivers/net/sfc/net_driver.h drivers/net/sfc/siena.c
Diffstat (limited to 'net/sched')
-rw-r--r--net/sched/act_nat.c4
-rw-r--r--net/sched/act_pedit.c24
-rw-r--r--net/sched/cls_u32.c49
3 files changed, 54 insertions, 23 deletions
diff --git a/net/sched/act_nat.c b/net/sched/act_nat.c
index d885ba311564..570949417f38 100644
--- a/net/sched/act_nat.c
+++ b/net/sched/act_nat.c
@@ -159,6 +159,9 @@ static int tcf_nat(struct sk_buff *skb, struct tc_action *a,
iph->daddr = new_addr;
csum_replace4(&iph->check, addr, new_addr);
+ } else if ((iph->frag_off & htons(IP_OFFSET)) ||
+ iph->protocol != IPPROTO_ICMP) {
+ goto out;
}
ihl = iph->ihl * 4;
@@ -247,6 +250,7 @@ static int tcf_nat(struct sk_buff *skb, struct tc_action *a,
break;
}
+out:
return action;
drop:
diff --git a/net/sched/act_pedit.c b/net/sched/act_pedit.c
index fdbd0b7bd840..50e3d945e1f4 100644
--- a/net/sched/act_pedit.c
+++ b/net/sched/act_pedit.c
@@ -125,7 +125,7 @@ static int tcf_pedit(struct sk_buff *skb, struct tc_action *a,
{
struct tcf_pedit *p = a->priv;
int i, munged = 0;
- u8 *pptr;
+ unsigned int off;
if (!(skb->tc_verd & TC_OK2MUNGE)) {
/* should we set skb->cloned? */
@@ -134,7 +134,7 @@ static int tcf_pedit(struct sk_buff *skb, struct tc_action *a,
}
}
- pptr = skb_network_header(skb);
+ off = skb_network_offset(skb);
spin_lock(&p->tcf_lock);
@@ -144,17 +144,17 @@ static int tcf_pedit(struct sk_buff *skb, struct tc_action *a,
struct tc_pedit_key *tkey = p->tcfp_keys;
for (i = p->tcfp_nkeys; i > 0; i--, tkey++) {
- u32 *ptr;
+ u32 *ptr, _data;
int offset = tkey->off;
if (tkey->offmask) {
- if (skb->len > tkey->at) {
- char *j = pptr + tkey->at;
- offset += ((*j & tkey->offmask) >>
- tkey->shift);
- } else {
+ char *d, _d;
+
+ d = skb_header_pointer(skb, off + tkey->at, 1,
+ &_d);
+ if (!d)
goto bad;
- }
+ offset += (*d & tkey->offmask) >> tkey->shift;
}
if (offset % 4) {
@@ -169,9 +169,13 @@ static int tcf_pedit(struct sk_buff *skb, struct tc_action *a,
goto bad;
}
- ptr = (u32 *)(pptr+offset);
+ ptr = skb_header_pointer(skb, off + offset, 4, &_data);
+ if (!ptr)
+ goto bad;
/* just do it, baby */
*ptr = ((*ptr & tkey->mask) ^ tkey->val);
+ if (ptr == &_data)
+ skb_store_bits(skb, off + offset, ptr, 4);
munged++;
}
diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c
index 96275422c619..4f522143811e 100644
--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -98,11 +98,11 @@ static int u32_classify(struct sk_buff *skb, struct tcf_proto *tp, struct tcf_re
{
struct {
struct tc_u_knode *knode;
- u8 *ptr;
+ unsigned int off;
} stack[TC_U32_MAXDEPTH];
struct tc_u_hnode *ht = (struct tc_u_hnode*)tp->root;
- u8 *ptr = skb_network_header(skb);
+ unsigned int off = skb_network_offset(skb);
struct tc_u_knode *n;
int sdepth = 0;
int off2 = 0;
@@ -134,8 +134,14 @@ next_knode:
#endif
for (i = n->sel.nkeys; i>0; i--, key++) {
-
- if ((*(__be32*)(ptr+key->off+(off2&key->offmask))^key->val)&key->mask) {
+ unsigned int toff;
+ __be32 *data, _data;
+
+ toff = off + key->off + (off2 & key->offmask);
+ data = skb_header_pointer(skb, toff, 4, &_data);
+ if (!data)
+ goto out;
+ if ((*data ^ key->val) & key->mask) {
n = n->next;
goto next_knode;
}
@@ -174,29 +180,45 @@ check_terminal:
if (sdepth >= TC_U32_MAXDEPTH)
goto deadloop;
stack[sdepth].knode = n;
- stack[sdepth].ptr = ptr;
+ stack[sdepth].off = off;
sdepth++;
ht = n->ht_down;
sel = 0;
- if (ht->divisor)
- sel = ht->divisor&u32_hash_fold(*(__be32*)(ptr+n->sel.hoff), &n->sel,n->fshift);
-
+ if (ht->divisor) {
+ __be32 *data, _data;
+
+ data = skb_header_pointer(skb, off + n->sel.hoff, 4,
+ &_data);
+ if (!data)
+ goto out;
+ sel = ht->divisor & u32_hash_fold(*data, &n->sel,
+ n->fshift);
+ }
if (!(n->sel.flags&(TC_U32_VAROFFSET|TC_U32_OFFSET|TC_U32_EAT)))
goto next_ht;
if (n->sel.flags&(TC_U32_OFFSET|TC_U32_VAROFFSET)) {
off2 = n->sel.off + 3;
- if (n->sel.flags&TC_U32_VAROFFSET)
- off2 += ntohs(n->sel.offmask & *(__be16*)(ptr+n->sel.offoff)) >>n->sel.offshift;
+ if (n->sel.flags & TC_U32_VAROFFSET) {
+ __be16 *data, _data;
+
+ data = skb_header_pointer(skb,
+ off + n->sel.offoff,
+ 2, &_data);
+ if (!data)
+ goto out;
+ off2 += ntohs(n->sel.offmask & *data) >>
+ n->sel.offshift;
+ }
off2 &= ~3;
}
if (n->sel.flags&TC_U32_EAT) {
- ptr += off2;
+ off += off2;
off2 = 0;
}
- if (ptr < skb_tail_pointer(skb))
+ if (off < skb->len)
goto next_ht;
}
@@ -204,9 +226,10 @@ check_terminal:
if (sdepth--) {
n = stack[sdepth].knode;
ht = n->ht_up;
- ptr = stack[sdepth].ptr;
+ off = stack[sdepth].off;
goto check_terminal;
}
+out:
return -1;
deadloop: