#include <linux/ipv6.h>
#include <linux/init.h>
#include <net/inet_ecn.h>
+#include <net/ip.h>
#include <net/icmp.h>
#include <net/net_namespace.h>
-#ifndef TEST_FRAME
-#include <net/tcp.h>
-#endif /* TEST_FRAME (not defined) */
-
#include <linux/socket.h> /* for sa_family_t */
#include <net/sock.h>
struct sctp_transport *tp = packet->transport;
struct sctp_association *asoc = tp->asoc;
struct sctphdr *sh;
- __be32 crc32 = cpu_to_be32(0);
struct sk_buff *nskb;
struct sctp_chunk *chunk, *tmp;
struct sock *sk;
/* Build the SCTP header. */
sh = (struct sctphdr *)skb_push(nskb, sizeof(struct sctphdr));
+ skb_reset_transport_header(nskb);
sh->source = htons(packet->source_port);
sh->dest = htons(packet->destination_port);
* Note: Adler-32 is no longer applicable, as has been replaced
* by CRC32-C as described in <draft-ietf-tsvwg-sctpcsum-02.txt>.
*/
- if (!(dst->dev->features & NETIF_F_NO_CSUM)) {
- crc32 = sctp_start_cksum((__u8 *)sh, cksum_buf_len);
- crc32 = sctp_end_cksum(crc32);
- } else
- nskb->ip_summed = CHECKSUM_UNNECESSARY;
-
- /* 3) Put the resultant value into the checksum field in the
- * common header, and leave the rest of the bits unchanged.
- */
- sh->checksum = crc32;
+ if (!sctp_checksum_disable &&
+ !(dst->dev->features & (NETIF_F_NO_CSUM | NETIF_F_SCTP_CSUM))) {
+ __u32 crc32 = sctp_start_cksum((__u8 *)sh, cksum_buf_len);
+
+ /* 3) Put the resultant value into the checksum field in the
+ * common header, and leave the rest of the bits unchanged.
+ */
+ sh->checksum = sctp_end_cksum(crc32);
+ } else {
+ if (dst->dev->features & NETIF_F_SCTP_CSUM) {
+ /* no need to seed psuedo checksum for SCTP */
+ nskb->ip_summed = CHECKSUM_PARTIAL;
+ nskb->csum_start = (skb_transport_header(nskb) -
+ nskb->head);
+ nskb->csum_offset = offsetof(struct sctphdr, checksum);
+ } else {
+ nskb->ip_summed = CHECKSUM_UNNECESSARY;
+ }
+ }
/* IP layer ECN support
* From RFC 2481