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-rw-r--r--net/core/datagram.c21
-rw-r--r--net/core/dev.c12
-rw-r--r--net/core/netpoll.c18
-rw-r--r--net/core/rtnetlink.c83
-rw-r--r--net/core/skbuff.c15
5 files changed, 62 insertions, 87 deletions
diff --git a/net/core/datagram.c b/net/core/datagram.c
index d219435d086..1bcfef51ac5 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -350,6 +350,20 @@ fault:
return -EFAULT;
}
+unsigned int __skb_checksum_complete(struct sk_buff *skb)
+{
+ unsigned int sum;
+
+ sum = (u16)csum_fold(skb_checksum(skb, 0, skb->len, skb->csum));
+ if (likely(!sum)) {
+ if (unlikely(skb->ip_summed == CHECKSUM_HW))
+ netdev_rx_csum_fault(skb->dev);
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ }
+ return sum;
+}
+EXPORT_SYMBOL(__skb_checksum_complete);
+
/**
* skb_copy_and_csum_datagram_iovec - Copy and checkum skb to user iovec.
* @skb: skbuff
@@ -363,7 +377,7 @@ fault:
* -EFAULT - fault during copy. Beware, in this case iovec
* can be modified!
*/
-int skb_copy_and_csum_datagram_iovec(const struct sk_buff *skb,
+int skb_copy_and_csum_datagram_iovec(struct sk_buff *skb,
int hlen, struct iovec *iov)
{
unsigned int csum;
@@ -376,8 +390,7 @@ int skb_copy_and_csum_datagram_iovec(const struct sk_buff *skb,
iov++;
if (iov->iov_len < chunk) {
- if ((unsigned short)csum_fold(skb_checksum(skb, 0, chunk + hlen,
- skb->csum)))
+ if (__skb_checksum_complete(skb))
goto csum_error;
if (skb_copy_datagram_iovec(skb, hlen, iov, chunk))
goto fault;
@@ -388,6 +401,8 @@ int skb_copy_and_csum_datagram_iovec(const struct sk_buff *skb,
goto fault;
if ((unsigned short)csum_fold(csum))
goto csum_error;
+ if (unlikely(skb->ip_summed == CHECKSUM_HW))
+ netdev_rx_csum_fault(skb->dev);
iov->iov_len -= chunk;
iov->iov_base += chunk;
}
diff --git a/net/core/dev.c b/net/core/dev.c
index 8d154159527..0b48e294aaf 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1108,6 +1108,18 @@ out:
return ret;
}
+/* Take action when hardware reception checksum errors are detected. */
+#ifdef CONFIG_BUG
+void netdev_rx_csum_fault(struct net_device *dev)
+{
+ if (net_ratelimit()) {
+ printk(KERN_ERR "%s: hw csum failure.\n", dev->name);
+ dump_stack();
+ }
+}
+EXPORT_SYMBOL(netdev_rx_csum_fault);
+#endif
+
#ifdef CONFIG_HIGHMEM
/* Actually, we should eliminate this check as soon as we know, that:
* 1. IOMMU is present and allows to map all the memory.
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 802fe11efad..49424a42a2c 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -101,16 +101,20 @@ void netpoll_queue(struct sk_buff *skb)
static int checksum_udp(struct sk_buff *skb, struct udphdr *uh,
unsigned short ulen, u32 saddr, u32 daddr)
{
- if (uh->check == 0)
+ unsigned int psum;
+
+ if (uh->check == 0 || skb->ip_summed == CHECKSUM_UNNECESSARY)
return 0;
- if (skb->ip_summed == CHECKSUM_HW)
- return csum_tcpudp_magic(
- saddr, daddr, ulen, IPPROTO_UDP, skb->csum);
+ psum = csum_tcpudp_nofold(saddr, daddr, ulen, IPPROTO_UDP, 0);
+
+ if (skb->ip_summed == CHECKSUM_HW &&
+ !(u16)csum_fold(csum_add(psum, skb->csum)))
+ return 0;
- skb->csum = csum_tcpudp_nofold(saddr, daddr, ulen, IPPROTO_UDP, 0);
+ skb->csum = psum;
- return csum_fold(skb_checksum(skb, 0, skb->len, skb->csum));
+ return __skb_checksum_complete(skb);
}
/*
@@ -489,7 +493,7 @@ int __netpoll_rx(struct sk_buff *skb)
if (ulen != len)
goto out;
- if (checksum_udp(skb, uh, ulen, iph->saddr, iph->daddr) < 0)
+ if (checksum_udp(skb, uh, ulen, iph->saddr, iph->daddr))
goto out;
if (np->local_ip && np->local_ip != ntohl(iph->daddr))
goto out;
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 9bed7569ce3..8700379685e 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -49,6 +49,7 @@
#include <net/udp.h>
#include <net/sock.h>
#include <net/pkt_sched.h>
+#include <net/netlink.h>
DECLARE_MUTEX(rtnl_sem);
@@ -462,11 +463,6 @@ void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change)
netlink_broadcast(rtnl, skb, 0, RTNLGRP_LINK, GFP_KERNEL);
}
-static int rtnetlink_done(struct netlink_callback *cb)
-{
- return 0;
-}
-
/* Protected by RTNL sempahore. */
static struct rtattr **rta_buf;
static int rtattr_max;
@@ -524,8 +520,6 @@ rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, int *errp)
}
if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) {
- u32 rlen;
-
if (link->dumpit == NULL)
link = &(rtnetlink_links[PF_UNSPEC][type]);
@@ -533,14 +527,11 @@ rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, int *errp)
goto err_inval;
if ((*errp = netlink_dump_start(rtnl, skb, nlh,
- link->dumpit,
- rtnetlink_done)) != 0) {
+ link->dumpit, NULL)) != 0) {
return -1;
}
- rlen = NLMSG_ALIGN(nlh->nlmsg_len);
- if (rlen > skb->len)
- rlen = skb->len;
- skb_pull(skb, rlen);
+
+ netlink_queue_skip(nlh, skb);
return -1;
}
@@ -579,75 +570,13 @@ err_inval:
return -1;
}
-/*
- * Process one packet of messages.
- * Malformed skbs with wrong lengths of messages are discarded silently.
- */
-
-static inline int rtnetlink_rcv_skb(struct sk_buff *skb)
-{
- int err;
- struct nlmsghdr * nlh;
-
- while (skb->len >= NLMSG_SPACE(0)) {
- u32 rlen;
-
- nlh = (struct nlmsghdr *)skb->data;
- if (nlh->nlmsg_len < sizeof(*nlh) || skb->len < nlh->nlmsg_len)
- return 0;
- rlen = NLMSG_ALIGN(nlh->nlmsg_len);
- if (rlen > skb->len)
- rlen = skb->len;
- if (rtnetlink_rcv_msg(skb, nlh, &err)) {
- /* Not error, but we must interrupt processing here:
- * Note, that in this case we do not pull message
- * from skb, it will be processed later.
- */
- if (err == 0)
- return -1;
- netlink_ack(skb, nlh, err);
- } else if (nlh->nlmsg_flags&NLM_F_ACK)
- netlink_ack(skb, nlh, 0);
- skb_pull(skb, rlen);
- }
-
- return 0;
-}
-
-/*
- * rtnetlink input queue processing routine:
- * - process as much as there was in the queue upon entry.
- * - feed skbs to rtnetlink_rcv_skb, until it refuse a message,
- * that will occur, when a dump started.
- */
-
static void rtnetlink_rcv(struct sock *sk, int len)
{
- unsigned int qlen = skb_queue_len(&sk->sk_receive_queue);
+ unsigned int qlen = 0;
do {
- struct sk_buff *skb;
-
rtnl_lock();
-
- if (qlen > skb_queue_len(&sk->sk_receive_queue))
- qlen = skb_queue_len(&sk->sk_receive_queue);
-
- for (; qlen; qlen--) {
- skb = skb_dequeue(&sk->sk_receive_queue);
- if (rtnetlink_rcv_skb(skb)) {
- if (skb->len)
- skb_queue_head(&sk->sk_receive_queue,
- skb);
- else {
- kfree_skb(skb);
- qlen--;
- }
- break;
- }
- kfree_skb(skb);
- }
-
+ netlink_run_queue(sk, &qlen, &rtnetlink_rcv_msg);
up(&rtnl_sem);
netdev_run_todo();
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 95501e40100..b7d13a4fff4 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -336,6 +336,9 @@ void __kfree_skb(struct sk_buff *skb)
}
#ifdef CONFIG_NETFILTER
nf_conntrack_put(skb->nfct);
+#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
+ nf_conntrack_put_reasm(skb->nfct_reasm);
+#endif
#ifdef CONFIG_BRIDGE_NETFILTER
nf_bridge_put(skb->nf_bridge);
#endif
@@ -414,9 +417,17 @@ struct sk_buff *skb_clone(struct sk_buff *skb, gfp_t gfp_mask)
C(nfct);
nf_conntrack_get(skb->nfct);
C(nfctinfo);
+#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
+ C(nfct_reasm);
+ nf_conntrack_get_reasm(skb->nfct_reasm);
+#endif
#if defined(CONFIG_IP_VS) || defined(CONFIG_IP_VS_MODULE)
C(ipvs_property);
#endif
+#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
+ C(nfct_reasm);
+ nf_conntrack_get_reasm(skb->nfct_reasm);
+#endif
#ifdef CONFIG_BRIDGE_NETFILTER
C(nf_bridge);
nf_bridge_get(skb->nf_bridge);
@@ -474,6 +485,10 @@ static void copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
new->nfct = old->nfct;
nf_conntrack_get(old->nfct);
new->nfctinfo = old->nfctinfo;
+#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
+ new->nfct_reasm = old->nfct_reasm;
+ nf_conntrack_get_reasm(old->nfct_reasm);
+#endif
#if defined(CONFIG_IP_VS) || defined(CONFIG_IP_VS_MODULE)
new->ipvs_property = old->ipvs_property;
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-11 13:26:48 +0000