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authorXin Long <lucien.xin@gmail.com>2018-07-02 18:21:12 +0800
committerDavid S. Miller <davem@davemloft.net>2018-07-04 11:36:54 +0900
commit8a9c58d28d0f66569737a3295116710ed24573cd (patch)
tree4d530788207cca98e68faee6d5a4145d5d8befc4 /include/net/sctp
parent69b9e1e07d98b57b972df3c44647ca8795284d39 (diff)
sctp: add support for dscp and flowlabel per transport
Like some other per transport params, flowlabel and dscp are added in transport, asoc and sctp_sock. By default, transport sets its value from asoc's, and asoc does it from sctp_sock. flowlabel only works for ipv6 transport. Other than that they need to be passed down in sctp_xmit, flow4/6 also needs to set them before looking up route in get_dst. Note that it uses '& 0x100000' to check if flowlabel is set and '& 0x1' (tos 1st bit is unused) to check if dscp is set by users, so that they could be set to 0 by sockopt in next patch. Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/sctp')
-rw-r--r--include/net/sctp/structs.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 701a51736fa5..ab869e0d8326 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -193,6 +193,9 @@ struct sctp_sock {
/* This is the max_retrans value for new associations. */
__u16 pathmaxrxt;
+ __u32 flowlabel;
+ __u8 dscp;
+
/* The initial Path MTU to use for new associations. */
__u32 pathmtu;
@@ -895,6 +898,9 @@ struct sctp_transport {
*/
__u16 pathmaxrxt;
+ __u32 flowlabel;
+ __u8 dscp;
+
/* This is the partially failed retrans value for the transport
* and will be initialized from the assocs value. This can be changed
* using the SCTP_PEER_ADDR_THLDS socket option
@@ -1772,6 +1778,9 @@ struct sctp_association {
*/
__u16 pathmaxrxt;
+ __u32 flowlabel;
+ __u8 dscp;
+
/* Flag that path mtu update is pending */
__u8 pmtu_pending;