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authorLinus Torvalds <torvalds@g5.osdl.org>2006-04-18 18:03:22 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-18 18:03:22 -0700
commit5c723d26fa223bdb17b9230c77e4e1156884475a (patch)
tree03487f55b11cdfa5d3f0edf655fa2351f7d4ed53
parenta196e7880905313773be97dbca5aa7b0a0aed71c (diff)
parent63903ca6af3d9424a0c2b176f927fa7e7ab2ae8e (diff)
Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [NET]: Remove redundant NULL checks before [kv]free unaligned access in sk_run_filter() [IPV6]: Clean up hop-by-hop options handler. [IPV6] XFRM: Fix decoding session with preceding extension header(s). [IPV6] XFRM: Don't use old copy of pointer after pskb_may_pull(). [IPV6]: Ensure to have hop-by-hop options in our header of &sk_buff. [TCP]: Fix truesize underflow
-rw-r--r--include/net/ipv6.h2
-rw-r--r--net/core/filter.c5
-rw-r--r--net/ipv4/ipcomp.c7
-rw-r--r--net/ipv4/tcp_output.c4
-rw-r--r--net/ipv6/exthdrs.c16
-rw-r--r--net/ipv6/ip6_input.c3
-rw-r--r--net/ipv6/xfrm6_policy.c8
-rw-r--r--net/tipc/name_distr.c3
8 files changed, 30 insertions, 18 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 6d6f0634ae41..4abedb8eaece 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -230,7 +230,7 @@ extern int ip6_ra_control(struct sock *sk, int sel,
void (*destructor)(struct sock *));
-extern int ipv6_parse_hopopts(struct sk_buff *skb, int);
+extern int ipv6_parse_hopopts(struct sk_buff *skb);
extern struct ipv6_txoptions * ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt);
extern struct ipv6_txoptions * ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
diff --git a/net/core/filter.c b/net/core/filter.c
index 93fbd01d2259..5b4486a60cf6 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -34,6 +34,7 @@
#include <linux/timer.h>
#include <asm/system.h>
#include <asm/uaccess.h>
+#include <asm/unaligned.h>
#include <linux/filter.h>
/* No hurry in this branch */
@@ -177,7 +178,7 @@ unsigned int sk_run_filter(struct sk_buff *skb, struct sock_filter *filter, int
load_w:
ptr = load_pointer(skb, k, 4, &tmp);
if (ptr != NULL) {
- A = ntohl(*(u32 *)ptr);
+ A = ntohl(get_unaligned((u32 *)ptr));
continue;
}
break;
@@ -186,7 +187,7 @@ load_w:
load_h:
ptr = load_pointer(skb, k, 2, &tmp);
if (ptr != NULL) {
- A = ntohs(*(u16 *)ptr);
+ A = ntohs(get_unaligned((u16 *)ptr));
continue;
}
break;
diff --git a/net/ipv4/ipcomp.c b/net/ipv4/ipcomp.c
index 04a429465665..cd810f41af1a 100644
--- a/net/ipv4/ipcomp.c
+++ b/net/ipv4/ipcomp.c
@@ -290,11 +290,8 @@ static void ipcomp_free_scratches(void)
if (!scratches)
return;
- for_each_possible_cpu(i) {
- void *scratch = *per_cpu_ptr(scratches, i);
- if (scratch)
- vfree(scratch);
- }
+ for_each_possible_cpu(i)
+ vfree(*per_cpu_ptr(scratches, i));
free_percpu(scratches);
}
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index b871db6adc55..44df1db726a3 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -551,7 +551,9 @@ int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len, unsigned int mss
buff = sk_stream_alloc_skb(sk, nsize, GFP_ATOMIC);
if (buff == NULL)
return -ENOMEM; /* We'll just try again later. */
- sk_charge_skb(sk, buff);
+
+ buff->truesize = skb->len - len;
+ skb->truesize -= buff->truesize;
/* Correct the sequence numbers. */
TCP_SKB_CB(buff)->seq = TCP_SKB_CB(skb)->seq + len;
diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 2a1e7e45b890..a18d4256372c 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -485,15 +485,27 @@ static struct tlvtype_proc tlvprochopopt_lst[] = {
{ -1, }
};
-int ipv6_parse_hopopts(struct sk_buff *skb, int nhoff)
+int ipv6_parse_hopopts(struct sk_buff *skb)
{
struct inet6_skb_parm *opt = IP6CB(skb);
+ /*
+ * skb->nh.raw is equal to skb->data, and
+ * skb->h.raw - skb->nh.raw is always equal to
+ * sizeof(struct ipv6hdr) by definition of
+ * hop-by-hop options.
+ */
+ if (!pskb_may_pull(skb, sizeof(struct ipv6hdr) + 8) ||
+ !pskb_may_pull(skb, sizeof(struct ipv6hdr) + ((skb->h.raw[1] + 1) << 3))) {
+ kfree_skb(skb);
+ return -1;
+ }
+
opt->hop = sizeof(struct ipv6hdr);
if (ip6_parse_tlv(tlvprochopopt_lst, skb)) {
skb->h.raw += (skb->h.raw[1]+1)<<3;
opt->nhoff = sizeof(struct ipv6hdr);
- return sizeof(struct ipv6hdr);
+ return 1;
}
return -1;
}
diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c
index 29f73592e68e..aceee252503d 100644
--- a/net/ipv6/ip6_input.c
+++ b/net/ipv6/ip6_input.c
@@ -114,11 +114,10 @@ int ipv6_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt
}
if (hdr->nexthdr == NEXTHDR_HOP) {
- if (ipv6_parse_hopopts(skb, IP6CB(skb)->nhoff) < 0) {
+ if (ipv6_parse_hopopts(skb) < 0) {
IP6_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
return 0;
}
- hdr = skb->nh.ipv6h;
}
return NF_HOOK(PF_INET6,NF_IP6_PRE_ROUTING, skb, dev, NULL, ip6_rcv_finish);
diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
index 91cce8b2d7a5..88c840f1beb6 100644
--- a/net/ipv6/xfrm6_policy.c
+++ b/net/ipv6/xfrm6_policy.c
@@ -191,16 +191,18 @@ error:
static inline void
_decode_session6(struct sk_buff *skb, struct flowi *fl)
{
- u16 offset = sizeof(struct ipv6hdr);
+ u16 offset = skb->h.raw - skb->nh.raw;
struct ipv6hdr *hdr = skb->nh.ipv6h;
- struct ipv6_opt_hdr *exthdr = (struct ipv6_opt_hdr*)(skb->nh.raw + offset);
- u8 nexthdr = skb->nh.ipv6h->nexthdr;
+ struct ipv6_opt_hdr *exthdr;
+ u8 nexthdr = skb->nh.raw[IP6CB(skb)->nhoff];
memset(fl, 0, sizeof(struct flowi));
ipv6_addr_copy(&fl->fl6_dst, &hdr->daddr);
ipv6_addr_copy(&fl->fl6_src, &hdr->saddr);
while (pskb_may_pull(skb, skb->nh.raw + offset + 1 - skb->data)) {
+ exthdr = (struct ipv6_opt_hdr*)(skb->nh.raw + offset);
+
switch (nexthdr) {
case NEXTHDR_ROUTING:
case NEXTHDR_HOP:
diff --git a/net/tipc/name_distr.c b/net/tipc/name_distr.c
index 953307a9df1d..a3bbc891f959 100644
--- a/net/tipc/name_distr.c
+++ b/net/tipc/name_distr.c
@@ -229,8 +229,7 @@ static void node_is_down(struct publication *publ)
publ->node, publ->ref, publ->key);
assert(p == publ);
write_unlock_bh(&tipc_nametbl_lock);
- if (publ)
- kfree(publ);
+ kfree(publ);
}
/**