@@ -3119,6 +3119,8 @@ struct skb_checksum_ops {
__wsum (*combine)(__wsum csum, __wsum csum2, int offset, int len);
};
+extern const struct skb_checksum_ops *sctp_csum_stub __read_mostly;
+
__wsum __skb_checksum(const struct sk_buff *skb, int offset, int len,
__wsum csum, const struct skb_checksum_ops *ops);
__wsum skb_checksum(const struct sk_buff *skb, int offset, int len,
@@ -2235,6 +2235,26 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset,
}
EXPORT_SYMBOL(skb_copy_and_csum_bits);
+static __wsum warn_sctp_csum_update(const void *buff, int len, __wsum sum)
+{
+ net_warn_ratelimited("attempt to compute crc32c without sctp.ko\n");
+ return 0;
+}
+
+static __wsum warn_sctp_csum_combine(__wsum csum, __wsum csum2,
+ int offset, int len)
+{
+ net_warn_ratelimited("attempt to compute crc32c without sctp.ko\n");
+ return 0;
+}
+
+const struct skb_checksum_ops *sctp_csum_stub __read_mostly =
+ &(struct skb_checksum_ops) {
+ .update = warn_sctp_csum_update,
+ .combine = warn_sctp_csum_combine,
+};
+EXPORT_SYMBOL(sctp_csum_stub);
+
/**
* skb_zerocopy_headlen - Calculate headroom needed for skb_zerocopy()
* @from: source buffer
@@ -98,6 +98,12 @@ static const struct net_offload sctp6_offload = {
},
};
+static const struct skb_checksum_ops *sctp_csum_ops __read_mostly =
+ &(struct skb_checksum_ops) {
+ .update = sctp_csum_update,
+ .combine = sctp_csum_combine,
+};
+
int __init sctp_offload_init(void)
{
int ret;
@@ -110,6 +116,7 @@ int __init sctp_offload_init(void)
if (ret)
goto ipv4;
+ sctp_csum_stub = sctp_csum_ops;
return ret;
ipv4: