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Diffstat (limited to 'net')
-rw-r--r--net/ipv4/ip_sockglue.c11
-rw-r--r--net/ipv4/udp.c2
-rw-r--r--net/ipv6/udp.c3
3 files changed, 9 insertions, 7 deletions
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index af4919792b6a..b8a2d63d1fb8 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -98,7 +98,7 @@ static void ip_cmsg_recv_retopts(struct msghdr *msg, struct sk_buff *skb)
}
static void ip_cmsg_recv_checksum(struct msghdr *msg, struct sk_buff *skb,
- int offset)
+ int tlen, int offset)
{
__wsum csum = skb->csum;
@@ -106,8 +106,9 @@ static void ip_cmsg_recv_checksum(struct msghdr *msg, struct sk_buff *skb,
return;
if (offset != 0)
- csum = csum_sub(csum, csum_partial(skb_transport_header(skb),
- offset, 0));
+ csum = csum_sub(csum,
+ csum_partial(skb_transport_header(skb) + tlen,
+ offset, 0));
put_cmsg(msg, SOL_IP, IP_CHECKSUM, sizeof(__wsum), &csum);
}
@@ -153,7 +154,7 @@ static void ip_cmsg_recv_dstaddr(struct msghdr *msg, struct sk_buff *skb)
}
void ip_cmsg_recv_offset(struct msghdr *msg, struct sk_buff *skb,
- int offset)
+ int tlen, int offset)
{
struct inet_sock *inet = inet_sk(skb->sk);
unsigned int flags = inet->cmsg_flags;
@@ -216,7 +217,7 @@ void ip_cmsg_recv_offset(struct msghdr *msg, struct sk_buff *skb,
}
if (flags & IP_CMSG_CHECKSUM)
- ip_cmsg_recv_checksum(msg, skb, offset);
+ ip_cmsg_recv_checksum(msg, skb, tlen, offset);
}
EXPORT_SYMBOL(ip_cmsg_recv_offset);
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 311613e413cb..d123d68f4d1d 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1322,7 +1322,7 @@ try_again:
*addr_len = sizeof(*sin);
}
if (inet->cmsg_flags)
- ip_cmsg_recv_offset(msg, skb, sizeof(struct udphdr) + off);
+ ip_cmsg_recv_offset(msg, skb, sizeof(struct udphdr), off);
err = copied;
if (flags & MSG_TRUNC)
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 9aa7c1c7a9ce..b2ef061e6836 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -427,7 +427,8 @@ try_again:
if (is_udp4) {
if (inet->cmsg_flags)
- ip_cmsg_recv(msg, skb);
+ ip_cmsg_recv_offset(msg, skb,
+ sizeof(struct udphdr), off);
} else {
if (np->rxopt.all)
ip6_datagram_recv_specific_ctl(sk, msg, skb);