#include <linux/types.h>
#include <asm/byteorder.h>
-/* Structure describing an Internet (DCCP) socket address. */
-struct sockaddr_dccp {
- __u16 sdccp_family; /* Address family */
- __u16 sdccp_port; /* Port number */
- __u32 sdccp_addr; /* Internet address */
- __u32 sdccp_service; /* Service */
- /* Pad to size of `struct sockaddr': 16 bytes . */
- __u32 sdccp_pad;
-};
-
/**
* struct dccp_hdr - generic part of DCCP packet header
*
* @dccph_seq - sequence number high or low order 24 bits, depends on dccph_x
*/
struct dccp_hdr {
- __u16 dccph_sport,
+ __be16 dccph_sport,
dccph_dport;
__u8 dccph_doff;
#if defined(__LITTLE_ENDIAN_BITFIELD)
#endif
__u16 dccph_checksum;
#if defined(__LITTLE_ENDIAN_BITFIELD)
- __u32 dccph_x:1,
+ __u8 dccph_x:1,
dccph_type:4,
- dccph_reserved:3,
- dccph_seq:24;
+ dccph_reserved:3;
#elif defined(__BIG_ENDIAN_BITFIELD)
- __u32 dccph_reserved:3,
+ __u8 dccph_reserved:3,
dccph_type:4,
- dccph_x:1,
- dccph_seq:24;
+ dccph_x:1;
#else
#error "Adjust your <asm/byteorder.h> defines"
#endif
+ __u8 dccph_seq2;
+ __be16 dccph_seq;
};
/**
* @dccph_seq_low - low 24 bits of a 48 bit seq packet
*/
struct dccp_hdr_ext {
- __u32 dccph_seq_low;
+ __be32 dccph_seq_low;
};
/**
* @dccph_req_options - list of options (must be a multiple of 32 bits
*/
struct dccp_hdr_request {
- __u32 dccph_req_service;
+ __be32 dccph_req_service;
};
/**
* struct dccp_hdr_ack_bits - acknowledgment bits common to most packets
* @dccph_resp_ack_nr_low - 48 bit ack number low order bits, contains GSR
*/
struct dccp_hdr_ack_bits {
- __u32 dccph_reserved1:8,
- dccph_ack_nr_high:24;
- __u32 dccph_ack_nr_low;
+ __be16 dccph_reserved1;
+ __be16 dccph_ack_nr_high;
+ __be32 dccph_ack_nr_low;
};
/**
* struct dccp_hdr_response - Conection initiation response header
*/
struct dccp_hdr_response {
struct dccp_hdr_ack_bits dccph_resp_ack;
- __u32 dccph_resp_service;
+ __be32 dccph_resp_service;
};
/**
DCCPO_MANDATORY = 1,
DCCPO_MIN_RESERVED = 3,
DCCPO_MAX_RESERVED = 31,
+ DCCPO_CHANGE_L = 32,
+ DCCPO_CONFIRM_L = 33,
+ DCCPO_CHANGE_R = 34,
+ DCCPO_CONFIRM_R = 35,
DCCPO_NDP_COUNT = 37,
DCCPO_ACK_VECTOR_0 = 38,
DCCPO_ACK_VECTOR_1 = 39,
/* 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_MAX_CCID_SPECIFIC = 255,
};
+/* this structure is argument to DCCP_SOCKOPT_CHANGE_X */
+struct dccp_so_feat {
+ __u8 dccpsf_feat;
+ __u8 *dccpsf_val;
+ __u8 dccpsf_len;
+};
+
/* DCCP socket options */
#define DCCP_SOCKOPT_PACKET_SIZE 1
+#define DCCP_SOCKOPT_SERVICE 2
+#define DCCP_SOCKOPT_CHANGE_L 3
+#define DCCP_SOCKOPT_CHANGE_R 4
+#define DCCP_SOCKOPT_CCID_RX_INFO 128
+#define DCCP_SOCKOPT_CCID_TX_INFO 192
+
+#define DCCP_SERVICE_LIST_MAX_LEN 32
#ifdef __KERNEL__
#include <linux/workqueue.h>
#include <net/inet_connection_sock.h>
+#include <net/inet_sock.h>
#include <net/inet_timewait_sock.h>
-#include <net/sock.h>
#include <net/tcp_states.h>
-#include <net/tcp.h>
enum dccp_state {
DCCP_OPEN = TCP_ESTABLISHED,
static inline __u64 dccp_hdr_seq(const struct sk_buff *skb)
{
const struct dccp_hdr *dh = dccp_hdr(skb);
-#if defined(__LITTLE_ENDIAN_BITFIELD)
- __u64 seq_nr = ntohl(dh->dccph_seq << 8);
-#elif defined(__BIG_ENDIAN_BITFIELD)
- __u64 seq_nr = ntohl(dh->dccph_seq);
-#else
-#error "Adjust your <asm/byteorder.h> defines"
-#endif
+ __u64 seq_nr = ntohs(dh->dccph_seq);
if (dh->dccph_x != 0)
seq_nr = (seq_nr << 32) + ntohl(dccp_hdrx(skb)->dccph_seq_low);
+ else
+ seq_nr += (u32)dh->dccph_seq2 << 16;
return seq_nr;
}
static inline u64 dccp_hdr_ack_seq(const struct sk_buff *skb)
{
const struct dccp_hdr_ack_bits *dhack = dccp_hdr_ack_bits(skb);
-#if defined(__LITTLE_ENDIAN_BITFIELD)
- return (((u64)ntohl(dhack->dccph_ack_nr_high << 8)) << 32) + ntohl(dhack->dccph_ack_nr_low);
-#elif defined(__BIG_ENDIAN_BITFIELD)
- return (((u64)ntohl(dhack->dccph_ack_nr_high)) << 32) + ntohl(dhack->dccph_ack_nr_low);
-#else
-#error "Adjust your <asm/byteorder.h> defines"
-#endif
+ return ((u64)ntohs(dhack->dccph_ack_nr_high) << 32) + ntohl(dhack->dccph_ack_nr_low);
}
static inline struct dccp_hdr_response *dccp_hdr_response(struct sk_buff *skb)
/* initial values for each feature */
#define DCCPF_INITIAL_SEQUENCE_WINDOW 100
-/* FIXME: for now we're using CCID 3 (TFRC) */
-#define DCCPF_INITIAL_CCID 3
-#define DCCPF_INITIAL_SEND_ACK_VECTOR 0
+#define DCCPF_INITIAL_ACK_RATIO 2
+#define DCCPF_INITIAL_CCID 2
+#define DCCPF_INITIAL_SEND_ACK_VECTOR 1
/* FIXME: for now we're default to 1 but it should really be 0 */
#define DCCPF_INITIAL_SEND_NDP_COUNT 1
#define DCCP_NDP_LIMIT 0xFFFFFF
/**
- * struct dccp_options - option values for a DCCP connection
- * @dccpo_sequence_window - Sequence Window Feature (section 7.5.2)
- * @dccpo_ccid - Congestion Control Id (CCID) (section 10)
- * @dccpo_send_ack_vector - Send Ack Vector Feature (section 11.5)
- * @dccpo_send_ndp_count - Send NDP Count Feature (7.7.2)
+ * struct dccp_minisock - Minimal DCCP connection representation
+ *
+ * Will be used to pass the state from dccp_request_sock to dccp_sock.
+ *
+ * @dccpms_sequence_window - Sequence Window Feature (section 7.5.2)
+ * @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)
*/
-struct dccp_options {
- __u64 dccpo_sequence_window;
- __u8 dccpo_ccid;
- __u8 dccpo_send_ack_vector;
- __u8 dccpo_send_ndp_count;
+struct dccp_minisock {
+ __u64 dccpms_sequence_window;
+ __u8 dccpms_rx_ccid;
+ __u8 dccpms_tx_ccid;
+ __u8 dccpms_send_ack_vector;
+ __u8 dccpms_send_ndp_count;
+ __u8 dccpms_ack_ratio;
+ struct list_head dccpms_pending;
+ struct list_head dccpms_conf;
+};
+
+struct dccp_opt_conf {
+ __u8 *dccpoc_val;
+ __u8 dccpoc_len;
};
-extern void __dccp_options_init(struct dccp_options *dccpo);
-extern void dccp_options_init(struct dccp_options *dccpo);
+struct dccp_opt_pend {
+ struct list_head dccpop_node;
+ __u8 dccpop_type;
+ __u8 dccpop_feat;
+ __u8 *dccpop_val;
+ __u8 dccpop_len;
+ int dccpop_conf;
+ struct dccp_opt_conf *dccpop_sc;
+};
+
+extern void __dccp_minisock_init(struct dccp_minisock *dmsk);
+extern void dccp_minisock_init(struct dccp_minisock *dmsk);
+
extern int dccp_parse_options(struct sock *sk, struct sk_buff *skb);
struct dccp_request_sock {
struct inet_request_sock dreq_inet_rsk;
__u64 dreq_iss;
__u64 dreq_isr;
- __u32 dreq_service;
+ __be32 dreq_service;
};
static inline struct dccp_request_sock *dccp_rsk(const struct request_sock *req)
extern struct inet_timewait_death_row dccp_death_row;
-/* Read about the ECN nonce to see why it is 253 */
-#define DCCP_MAX_ACK_VECTOR_LEN 253
-
struct dccp_options_received {
- u32 dccpor_ndp:24,
- dccpor_ack_vector_len:8;
- u32 dccpor_ack_vector_idx:10;
- /* 22 bits hole, try to pack */
+ u32 dccpor_ndp; /* only 24 bits */
u32 dccpor_timestamp;
u32 dccpor_timestamp_echo;
u32 dccpor_elapsed_time;
DCCP_ROLE_SERVER,
};
+struct dccp_service_list {
+ __u32 dccpsl_nr;
+ __be32 dccpsl_list[0];
+};
+
+#define DCCP_SERVICE_INVALID_VALUE htonl((__u32)-1)
+
+static inline int dccp_list_has_service(const struct dccp_service_list *sl,
+ const __be32 service)
+{
+ if (likely(sl != NULL)) {
+ u32 i = sl->dccpsl_nr;
+ while (i--)
+ if (sl->dccpsl_list[i] == service)
+ return 1;
+ }
+ return 0;
+}
+
+struct dccp_ackvec;
+
/**
* struct dccp_sock - DCCP socket state
*
* @dccps_gar - greatest valid ack number received on a non-Sync; initialized to %dccps_iss
* @dccps_timestamp_time - time of latest TIMESTAMP option
* @dccps_timestamp_echo - latest timestamp received on a TIMESTAMP option
- * @dccps_ext_header_len - network protocol overhead (IP/IPv6 options)
- * @dccps_pmtu_cookie - Last pmtu seen by socket
* @dccps_packet_size - Set thru setsockopt
* @dccps_role - Role of this sock, one of %dccp_role
* @dccps_ndp_count - number of Non Data Packets since last data packet
- * @dccps_hc_rx_ackpkts - receiver half connection acked packets
+ * @dccps_hc_rx_ackvec - rx half connection ack vector
*/
struct dccp_sock {
/* inet_connection_sock has to be the first member of dccp_sock */
__u64 dccps_gss;
__u64 dccps_gsr;
__u64 dccps_gar;
- unsigned long dccps_service;
+ __be32 dccps_service;
+ 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;
unsigned long dccps_ndp_count;
- __u16 dccps_ext_header_len;
- __u32 dccps_pmtu_cookie;
__u32 dccps_mss_cache;
- struct dccp_options dccps_options;
- struct dccp_ackpkts *dccps_hc_rx_ackpkts;
- void *dccps_hc_rx_ccid_private;
- void *dccps_hc_tx_ccid_private;
+ struct dccp_minisock dccps_minisock;
+ struct dccp_ackvec *dccps_hc_rx_ackvec;
struct ccid *dccps_hc_rx_ccid;
struct ccid *dccps_hc_tx_ccid;
struct dccp_options_received dccps_options_received;
return (struct dccp_sock *)sk;
}
+static inline struct dccp_minisock *dccp_msk(const struct sock *sk)
+{
+ return (struct dccp_minisock *)&dccp_sk(sk)->dccps_minisock;
+}
+
+static inline int dccp_service_not_initialized(const struct sock *sk)
+{
+ return dccp_sk(sk)->dccps_service == DCCP_SERVICE_INVALID_VALUE;
+}
+
static inline const char *dccp_role(const struct sock *sk)
{
switch (dccp_sk(sk)->dccps_role) {
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