---

yaml --- r: 134579 b: refs/heads/master c: 06e8680 h: refs/heads/master i: 134577: a42d5d0 134575: 48d757b v: v3
git-mirror · Feb 16, 2009 · 31c15e3 · 31c15e3
1 parent 1fe2c37
commit 31c15e3
Show file tree

Hide file tree

Showing 5 changed files with 11 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 85e8d004ecbc51ead6ae926e15973b42cf07b36e
+refs/heads/master: 06e868066e3b5828383eb40ff4d1c0029100b0b5
diff --git a/trunk/include/net/sctp/structs.h b/trunk/include/net/sctp/structs.h
@@ -218,6 +218,10 @@ extern struct sctp_globals {
 
 	/* Flag to idicate if SCTP-AUTH is enabled */
 	int auth_enable;
+
+	/* Flag to indicate whether computing and verifying checksum
+	 * is disabled. */
+        int checksum_disable;
 } sctp_globals;
 
 #define sctp_rto_initial		(sctp_globals.rto_initial)
@@ -252,6 +256,7 @@ extern struct sctp_globals {
 #define sctp_addip_noauth		(sctp_globals.addip_noauth_enable)
 #define sctp_prsctp_enable		(sctp_globals.prsctp_enable)
 #define sctp_auth_enable		(sctp_globals.auth_enable)
+#define sctp_checksum_disable		(sctp_globals.checksum_disable)
 
 /* SCTP Socket type: UDP or TCP style. */
 typedef enum {

diff --git a/trunk/net/sctp/input.c b/trunk/net/sctp/input.c
@@ -142,7 +142,8 @@ int sctp_rcv(struct sk_buff *skb)
 	__skb_pull(skb, skb_transport_offset(skb));
 	if (skb->len < sizeof(struct sctphdr))
 		goto discard_it;
-	if (!skb_csum_unnecessary(skb) && sctp_rcv_checksum(skb) < 0)
+	if (!sctp_checksum_disable && !skb_csum_unnecessary(skb) &&
+		  sctp_rcv_checksum(skb) < 0)
 		goto discard_it;
 
 	skb_pull(skb, sizeof(struct sctphdr));

diff --git a/trunk/net/sctp/output.c b/trunk/net/sctp/output.c
@@ -531,7 +531,7 @@ int sctp_packet_transmit(struct sctp_packet *packet)
 	 * Note: Adler-32 is no longer applicable, as has been replaced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)) {
+	if (!sctp_checksum_disable && !(dst->dev->features & NETIF_F_NO_CSUM)) {
 		crc32 = sctp_start_cksum((__u8 *)sh, cksum_buf_len);
 		crc32 = sctp_end_cksum(crc32);
 	} else

diff --git a/trunk/net/sctp/protocol.c b/trunk/net/sctp/protocol.c
@@ -1411,4 +1411,6 @@ MODULE_ALIAS("net-pf-" __stringify(PF_INET) "-proto-132");
 MODULE_ALIAS("net-pf-" __stringify(PF_INET6) "-proto-132");
 MODULE_AUTHOR("Linux Kernel SCTP developers <lksctp-developers@lists.sourceforge.net>");
 MODULE_DESCRIPTION("Support for the SCTP protocol (RFC2960)");
+module_param_named(no_checksums, sctp_checksum_disable, bool, 0644);
+MODULE_PARM_DESC(no_checksums, "Disable checksums computing and verification");
 MODULE_LICENSE("GPL");