};
/* DCCP features (RFC 4340 section 6.4) */
- enum {
- DCCPF_RESERVED = 0,
- DCCPF_CCID = 1,
+enum {
+ DCCPF_RESERVED = 0,
+ DCCPF_CCID = 1,
DCCPF_SHORT_SEQNOS = 2, /* XXX: not yet implemented */
- DCCPF_SEQUENCE_WINDOW = 3,
+ 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_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,
+ /* 10-127 reserved */
+ DCCPF_MIN_CCID_SPECIFIC = 128,
+ DCCPF_MAX_CCID_SPECIFIC = 255,
};
/* this structure is argument to DCCP_SOCKOPT_CHANGE_X */
static inline struct dccp_hdr *dccp_hdr(const struct sk_buff *skb)
{
- return (struct dccp_hdr *)skb->h.raw;
+ return (struct dccp_hdr *)skb_transport_header(skb);
}
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);
+ skb_push(skb, headlen);
+ skb_reset_transport_header(skb);
+ return memset(skb_transport_header(skb), 0, headlen);
}
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));
+ return (struct dccp_hdr_ext *)(skb_transport_header(skb) +
+ sizeof(struct dccp_hdr));
}
static inline unsigned int __dccp_basic_hdr_len(const struct dccp_hdr *dh)
static inline struct dccp_hdr_request *dccp_hdr_request(struct sk_buff *skb)
{
- return (struct dccp_hdr_request *)(skb->h.raw + dccp_basic_hdr_len(skb));
+ return (struct dccp_hdr_request *)(skb_transport_header(skb) +
+ dccp_basic_hdr_len(skb));
}
static inline struct dccp_hdr_ack_bits *dccp_hdr_ack_bits(const struct sk_buff *skb)
{
- return (struct dccp_hdr_ack_bits *)(skb->h.raw + dccp_basic_hdr_len(skb));
+ return (struct dccp_hdr_ack_bits *)(skb_transport_header(skb) +
+ dccp_basic_hdr_len(skb));
}
static inline u64 dccp_hdr_ack_seq(const struct sk_buff *skb)
static inline struct dccp_hdr_response *dccp_hdr_response(struct sk_buff *skb)
{
- return (struct dccp_hdr_response *)(skb->h.raw + dccp_basic_hdr_len(skb));
+ return (struct dccp_hdr_response *)(skb_transport_header(skb) +
+ dccp_basic_hdr_len(skb));
}
static inline struct dccp_hdr_reset *dccp_hdr_reset(struct sk_buff *skb)
{
- return (struct dccp_hdr_reset *)(skb->h.raw + dccp_basic_hdr_len(skb));
+ return (struct dccp_hdr_reset *)(skb_transport_header(skb) +
+ dccp_basic_hdr_len(skb));
}
static inline unsigned int __dccp_hdr_len(const struct dccp_hdr *dh)
};
#define DCCP_SERVICE_INVALID_VALUE htonl((__u32)-1)
-#define DCCP_SERVICE_CODE_IS_ABSENT 0
+#define DCCP_SERVICE_CODE_IS_ABSENT 0
static inline int dccp_list_has_service(const struct dccp_service_list *sl,
const __be32 service)
u32 i = sl->dccpsl_nr;
while (i--)
if (sl->dccpsl_list[i] == service)
- return 1;
+ return 1;
}
return 0;
}
* @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_l_ack_ratio -
- * @dccps_r_ack_ratio -
+ * @dccps_l_ack_ratio - feature-local Ack Ratio
+ * @dccps_r_ack_ratio - feature-remote 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_mss_cache - current value of MSS (path MTU minus header sizes)
+ * @dccps_minisock - associated minisock (accessed via dccp_msk)
* @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_hc_rx_ccid - CCID used for the receiver (or receiving half-connection)
+ * @dccps_hc_tx_ccid - CCID used for the sender (or sending half-connection)
+ * @dccps_options_received - parsed set of retrieved options
+ * @dccps_role - role of this sock, one of %dccp_role
+ * @dccps_hc_rx_insert_options - receiver wants to add options when acking
+ * @dccps_hc_tx_insert_options - sender wants to add options when sending
* @dccps_xmit_timer - timer for when CCID is not ready to send
+ * @dccps_syn_rtt - RTT sample from Request/Response exchange (in usecs)
*/
struct dccp_sock {
/* inet_connection_sock has to be the first member of dccp_sock */
struct inet_connection_sock dccps_inet_connection;
+#define dccps_syn_rtt dccps_inet_connection.icsk_ack.lrcvtime
__u64 dccps_swl;
__u64 dccps_swh;
__u64 dccps_awl;
__u8 dccps_hc_tx_insert_options:1;
struct timer_list dccps_xmit_timer;
};
-
+
static inline struct dccp_sock *dccp_sk(const struct sock *sk)
{
return (struct dccp_sock *)sk;