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-rw-r--r--include/linux/dccp.h63
1 files changed, 47 insertions, 16 deletions
diff --git a/include/linux/dccp.h b/include/linux/dccp.h
index 53553c99cad6..ed6cc8962d87 100644
--- a/include/linux/dccp.h
+++ b/include/linux/dccp.h
@@ -30,7 +30,7 @@ struct dccp_hdr {
#else
#error "Adjust your <asm/byteorder.h> defines"
#endif
- __u16 dccph_checksum;
+ __sum16 dccph_checksum;
#if defined(__LITTLE_ENDIAN_BITFIELD)
__u8 dccph_x:1,
dccph_type:4,
@@ -175,17 +175,21 @@ enum {
DCCPC_CCID3 = 3,
};
-/* DCCP features */
-enum {
- DCCPF_RESERVED = 0,
- DCCPF_CCID = 1,
- DCCPF_SEQUENCE_WINDOW = 3,
- DCCPF_ACK_RATIO = 5,
- DCCPF_SEND_ACK_VECTOR = 6,
- DCCPF_SEND_NDP_COUNT = 7,
- /* 10-127 reserved */
- DCCPF_MIN_CCID_SPECIFIC = 128,
- DCCPF_MAX_CCID_SPECIFIC = 255,
+/* DCCP features (RFC 4340 section 6.4) */
+ enum {
+ DCCPF_RESERVED = 0,
+ DCCPF_CCID = 1,
+ DCCPF_SHORT_SEQNOS = 2, /* XXX: not yet implemented */
+ DCCPF_SEQUENCE_WINDOW = 3,
+ DCCPF_ECN_INCAPABLE = 4, /* XXX: not yet implemented */
+ DCCPF_ACK_RATIO = 5,
+ DCCPF_SEND_ACK_VECTOR = 6,
+ DCCPF_SEND_NDP_COUNT = 7,
+ DCCPF_MIN_CSUM_COVER = 8,
+ DCCPF_DATA_CHECKSUM = 9, /* XXX: not yet implemented */
+ /* 10-127 reserved */
+ DCCPF_MIN_CCID_SPECIFIC = 128,
+ DCCPF_MAX_CCID_SPECIFIC = 255,
};
/* this structure is argument to DCCP_SOCKOPT_CHANGE_X */
@@ -196,13 +200,16 @@ struct dccp_so_feat {
};
/* DCCP socket options */
-#define DCCP_SOCKOPT_PACKET_SIZE 1
+#define DCCP_SOCKOPT_PACKET_SIZE 1 /* XXX deprecated, without effect */
#define DCCP_SOCKOPT_SERVICE 2
#define DCCP_SOCKOPT_CHANGE_L 3
#define DCCP_SOCKOPT_CHANGE_R 4
+#define DCCP_SOCKOPT_SEND_CSCOV 10
+#define DCCP_SOCKOPT_RECV_CSCOV 11
#define DCCP_SOCKOPT_CCID_RX_INFO 128
#define DCCP_SOCKOPT_CCID_TX_INFO 192
+/* maximum number of services provided on the same listening port */
#define DCCP_SERVICE_LIST_MAX_LEN 32
#ifdef __KERNEL__
@@ -256,6 +263,13 @@ static inline struct dccp_hdr *dccp_hdr(const struct sk_buff *skb)
return (struct dccp_hdr *)skb->h.raw;
}
+static inline struct dccp_hdr *dccp_zeroed_hdr(struct sk_buff *skb, int headlen)
+{
+ skb->h.raw = skb_push(skb, headlen);
+ memset(skb->h.raw, 0, headlen);
+ return dccp_hdr(skb);
+}
+
static inline struct dccp_hdr_ext *dccp_hdrx(const struct sk_buff *skb)
{
return (struct dccp_hdr_ext *)(skb->h.raw + sizeof(struct dccp_hdr));
@@ -342,6 +356,9 @@ static inline unsigned int dccp_hdr_len(const struct sk_buff *skb)
* @dccpms_ccid - Congestion Control Id (CCID) (section 10)
* @dccpms_send_ack_vector - Send Ack Vector Feature (section 11.5)
* @dccpms_send_ndp_count - Send NDP Count Feature (7.7.2)
+ * @dccpms_ack_ratio - Ack Ratio Feature (section 11.3)
+ * @dccpms_pending - List of features being negotiated
+ * @dccpms_conf -
*/
struct dccp_minisock {
__u64 dccpms_sequence_window;
@@ -439,12 +456,25 @@ struct dccp_ackvec;
* @dccps_gss - greatest sequence number sent
* @dccps_gsr - greatest valid sequence number received
* @dccps_gar - greatest valid ack number received on a non-Sync; initialized to %dccps_iss
+ * @dccps_service - first (passive sock) or unique (active sock) service code
+ * @dccps_service_list - second .. last service code on passive socket
* @dccps_timestamp_time - time of latest TIMESTAMP option
* @dccps_timestamp_echo - latest timestamp received on a TIMESTAMP option
- * @dccps_packet_size - Set thru setsockopt
- * @dccps_role - Role of this sock, one of %dccp_role
+ * @dccps_l_ack_ratio -
+ * @dccps_r_ack_ratio -
+ * @dccps_pcslen - sender partial checksum coverage (via sockopt)
+ * @dccps_pcrlen - receiver partial checksum coverage (via sockopt)
* @dccps_ndp_count - number of Non Data Packets since last data packet
+ * @dccps_mss_cache -
+ * @dccps_minisock -
* @dccps_hc_rx_ackvec - rx half connection ack vector
+ * @dccps_hc_rx_ccid -
+ * @dccps_hc_tx_ccid -
+ * @dccps_options_received -
+ * @dccps_epoch -
+ * @dccps_role - Role of this sock, one of %dccp_role
+ * @dccps_hc_rx_insert_options -
+ * @dccps_hc_tx_insert_options -
* @dccps_xmit_timer - timer for when CCID is not ready to send
*/
struct dccp_sock {
@@ -464,9 +494,10 @@ struct dccp_sock {
struct dccp_service_list *dccps_service_list;
struct timeval dccps_timestamp_time;
__u32 dccps_timestamp_echo;
- __u32 dccps_packet_size;
__u16 dccps_l_ack_ratio;
__u16 dccps_r_ack_ratio;
+ __u16 dccps_pcslen;
+ __u16 dccps_pcrlen;
unsigned long dccps_ndp_count;
__u32 dccps_mss_cache;
struct dccp_minisock dccps_minisock;
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