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Basic server functionality: listen(), accept()

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@382 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2007-11-16 18:48:39 +00:00
parent 5ea5c4cf09
commit 5d7b5add5d
20 changed files with 173 additions and 126 deletions
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include/net/uip/uip.h
+75 -74
View File
@@ -65,27 +65,27 @@
#define UIP_ACKDATA (1 << 0) /* Signifies that the outstanding data was acked and the
* application should send out new data instead of retransmitting
* the last data. */
#define UIP_NEWDATA (1 << 1) /* Flags the fact that the peer has sent us new data. */
* the last data */
#define UIP_NEWDATA (1 << 1) /* Flags the fact that the peer has sent us new data */
#define UIP_REXMIT (1 << 2) /* Tells the application to retransmit the data that was last
* sent. */
* sent */
#define UIP_POLL (1 << 3) /* Used for polling the application, to check if the application
* has data that it wants to send. */
* has data that it wants to send */
#define UIP_CLOSE (1 << 4) /* The remote host has closed the connection, thus the connection
* has gone away. Or the application signals that it wants to
* close the connection. */
* close the connection */
#define UIP_ABORT (1 << 5) /* The remote host has aborted the connection, thus the connection
* has gone away. Or the application signals that it wants to
* abort the connection. */
* abort the connection */
#define UIP_CONNECTED (1 << 6) /* We have got a connection from a remote host and have set up a
* new connection for it, or an active connection has been
* successfully established. */
#define UIP_TIMEDOUT (1 << 7) /* The connection has been aborted due to too many retransmissions. */
* successfully established */
#define UIP_TIMEDOUT (1 << 7) /* The connection has been aborted due to too many retransmissions */
#define UIP_DATA_EVENTS (UIP_ACKDATA|UIP_NEWDATA|UIP_REXMIT|UIP_POLL)
#define UIP_CONN_EVENTS (UIP_CLOSE|UIP_ABORT|UIP_CONNECTED|UIP_TIMEDOUT)
/* The TCP states used in the struct uip_conn tcpstateflags field. */
/* The TCP states used in the struct uip_conn tcpstateflags field */
#define UIP_CLOSED 0 /* The connection is not in use and available */
#define UIP_ALLOCATED 1 /* The connection is allocated, but not yet initialized */
@@ -137,7 +137,7 @@
* Public Type Definitions
****************************************************************************/
/* Repressentation of an IP address. */
/* Repressentation of an IP address */
typedef in_addr_t uip_ip4addr_t;
typedef uint16 uip_ip6addr_t[8];
@@ -161,26 +161,27 @@ struct uip_driver_s; /* Forward reference */
struct uip_conn
{
dq_entry_t node; /* Implements a doubly linked list */
uip_ipaddr_t ripaddr; /* The IP address of the remote host. */
uint16 lport; /* The local TCP port, in network byte order. */
uint16 rport; /* The local remote TCP port, in network byte order. */
uip_ipaddr_t lipaddr; /* The local IP address */
uip_ipaddr_t ripaddr; /* The IP address of the remote host */
uint16 lport; /* The local TCP port, in network byte order */
uint16 rport; /* The remoteTCP port, in network byte order */
uint8 rcv_nxt[4]; /* The sequence number that we expect to
* receive next. */
uint8 snd_nxt[4]; /* The sequence number that was last sent by us. */
uint16 len; /* Length of the data that was previously sent. */
* receive next */
uint8 snd_nxt[4]; /* The sequence number that was last sent by us */
uint16 len; /* Length of the data that was previously sent */
uint16 mss; /* Current maximum segment size for the
* connection. */
* connection */
uint16 initialmss; /* Initial maximum segment size for the
* connection. */
* connection */
uint8 sa; /* Retransmission time-out calculation state
* variable. */
* variable */
uint8 sv; /* Retransmission time-out calculation state
* variable. */
uint8 rto; /* Retransmission time-out. */
uint8 tcpstateflags; /* TCP state and flags. */
uint8 timer; /* The retransmission timer (units: half-seconds). */
* variable */
uint8 rto; /* Retransmission time-out */
uint8 tcpstateflags; /* TCP state and flags */
uint8 timer; /* The retransmission timer (units: half-seconds) */
uint8 nrtx; /* The number of retransmissions for the last
* segment sent. */
* segment sent */
/* Higher level logic can retain application specific information
* in the following:
@@ -212,15 +213,15 @@ struct uip_conn
};
#ifdef CONFIG_NET_UDP
/* Representation of a uIP UDP connection. */
/* Representation of a uIP UDP connection */
struct uip_udp_conn
{
dq_entry_t node; /* Implements a doubly linked list */
uip_ipaddr_t ripaddr; /* The IP address of the remote peer. */
uint16 lport; /* The local port number in network byte order. */
uint16 rport; /* The remote port number in network byte order. */
uint8 ttl; /* Default time-to-live. */
uip_ipaddr_t ripaddr; /* The IP address of the remote peer */
uint16 lport; /* The local port number in network byte order */
uint16 rport; /* The remote port number in network byte order */
uint8 ttl; /* Default time-to-live */
/* Defines the UDP callback */
@@ -237,63 +238,63 @@ struct uip_stats
{
struct
{
uip_stats_t drop; /* Number of dropped packets at the IP layer. */
uip_stats_t recv; /* Number of received packets at the IP layer. */
uip_stats_t sent; /* Number of sent packets at the IP layer. */
uip_stats_t drop; /* Number of dropped packets at the IP layer */
uip_stats_t recv; /* Number of received packets at the IP layer */
uip_stats_t sent; /* Number of sent packets at the IP layer */
uip_stats_t vhlerr; /* Number of packets dropped due to wrong
IP version or header length. */
IP version or header length */
uip_stats_t hblenerr; /* Number of packets dropped due to wrong
IP length, high byte. */
IP length, high byte */
uip_stats_t lblenerr; /* Number of packets dropped due to wrong
IP length, low byte. */
IP length, low byte */
uip_stats_t fragerr; /* Number of packets dropped since they
were IP fragments. */
were IP fragments */
uip_stats_t chkerr; /* Number of packets dropped due to IP
checksum errors. */
checksum errors */
uip_stats_t protoerr; /* Number of packets dropped since they
were neither ICMP, UDP nor TCP. */
} ip; /* IP statistics. */
were neither ICMP, UDP nor TCP */
} ip; /* IP statistics */
struct
{
uip_stats_t drop; /* Number of dropped ICMP packets. */
uip_stats_t recv; /* Number of received ICMP packets. */
uip_stats_t sent; /* Number of sent ICMP packets. */
uip_stats_t typeerr; /* Number of ICMP packets with a wrong type. */
} icmp; /* ICMP statistics. */
uip_stats_t drop; /* Number of dropped ICMP packets */
uip_stats_t recv; /* Number of received ICMP packets */
uip_stats_t sent; /* Number of sent ICMP packets */
uip_stats_t typeerr; /* Number of ICMP packets with a wrong type */
} icmp; /* ICMP statistics */
struct
{
uip_stats_t drop; /* Number of dropped TCP segments. */
uip_stats_t recv; /* Number of received TCP segments. */
uip_stats_t sent; /* Number of sent TCP segments. */
uip_stats_t chkerr; /* Number of TCP segments with a bad checksum. */
uip_stats_t ackerr; /* Number of TCP segments with a bad ACK number. */
uip_stats_t rst; /* Number of recevied TCP RST (reset) segments. */
uip_stats_t rexmit; /* Number of retransmitted TCP segments. */
uip_stats_t drop; /* Number of dropped TCP segments */
uip_stats_t recv; /* Number of received TCP segments */
uip_stats_t sent; /* Number of sent TCP segments */
uip_stats_t chkerr; /* Number of TCP segments with a bad checksum */
uip_stats_t ackerr; /* Number of TCP segments with a bad ACK number */
uip_stats_t rst; /* Number of recevied TCP RST (reset) segments */
uip_stats_t rexmit; /* Number of retransmitted TCP segments */
uip_stats_t syndrop; /* Number of dropped SYNs due to too few
available connections. */
uip_stats_t synrst; /* Number of SYNs for closed ports triggering a RST. */
} tcp; /* TCP statistics. */
available connections */
uip_stats_t synrst; /* Number of SYNs for closed ports triggering a RST */
} tcp; /* TCP statistics */
#ifdef CONFIG_NET_UDP
struct
{
uip_stats_t drop; /* Number of dropped UDP segments. */
uip_stats_t recv; /* Number of recived UDP segments. */
uip_stats_t sent; /* Number of sent UDP segments. */
uip_stats_t chkerr; /* Number of UDP segments with a bad checksum. */
} udp; /* UDP statistics. */
uip_stats_t drop; /* Number of dropped UDP segments */
uip_stats_t recv; /* Number of recived UDP segments */
uip_stats_t sent; /* Number of sent UDP segments */
uip_stats_t chkerr; /* Number of UDP segments with a bad checksum */
} udp; /* UDP statistics */
#endif /* CONFIG_NET_UDP */
};
/* The TCP and IP headers. */
/* The TCP and IP headers */
struct uip_tcpip_hdr
{
#ifdef CONFIG_NET_IPv6
/* IPv6 Ip header. */
/* IPv6 Ip header */
uint8 vtc; /* Bits 0-3: version, bits 4-7: traffic class (MS) */
uint8 tcf; /* Bits 0-3: traffic class (LS), 4-bits: flow label (MS) */
@@ -306,7 +307,7 @@ struct uip_tcpip_hdr
#else /* CONFIG_NET_IPv6 */
/* IPv4 IP header. */
/* IPv4 IP header */
uint8 vhl; /* 8-bit Version (4) and header length (5 or 6) */
uint8 tos; /* 8-bit Type of service (e.g., 6=TCP) */
@@ -321,7 +322,7 @@ struct uip_tcpip_hdr
#endif /* CONFIG_NET_IPv6 */
/* TCP header. */
/* TCP header */
uint16 srcport;
uint16 destport;
@@ -335,13 +336,13 @@ struct uip_tcpip_hdr
uint8 optdata[4];
};
/* The ICMP and IP headers. */
/* The ICMP and IP headers */
struct uip_icmpip_hdr
{
#ifdef CONFIG_NET_IPv6
/* IPv6 Ip header. */
/* IPv6 Ip header */
uint8 vtc; /* Bits 0-3: version, bits 4-7: traffic class (MS) */
uint8 tcf; /* Bits 0-3: traffic class (LS), bits 4-7: flow label (MS) */
@@ -354,7 +355,7 @@ struct uip_icmpip_hdr
#else /* CONFIG_NET_IPv6 */
/* IPv4 IP header. */
/* IPv4 IP header */
uint8 vhl; /* 8-bit Version (4) and header length (5 or 6) */
uint8 tos; /* 8-bit Type of service (e.g., 6=TCP) */
@@ -369,7 +370,7 @@ struct uip_icmpip_hdr
#endif /* CONFIG_NET_IPv6 */
/* ICMP (echo) header. */
/* ICMP (echo) header */
uint8 type;
uint8 icode;
@@ -392,13 +393,13 @@ struct uip_icmpip_hdr
#endif /* !CONFIG_NET_IPv6 */
};
/* The UDP and IP headers. */
/* The UDP and IP headers */
struct uip_udpip_hdr
{
#ifdef CONFIG_NET_IPv6
/* IPv6 Ip header. */
/* IPv6 Ip header */
uint8 vtc; /* Bits 0-3: version, bits 4-7: traffic class (MS) */
uint8 tcf; /* Bits 0-3: traffic class (LS), 4-bits: flow label (MS) */
@@ -411,7 +412,7 @@ struct uip_udpip_hdr
#else /* CONFIG_NET_IPv6 */
/* IPv4 header. */
/* IPv4 header */
uint8 vhl; /* 8-bit Version (4) and header length (5 or 6) */
uint8 tos; /* 8-bit Type of service (e.g., 6=TCP) */
@@ -426,7 +427,7 @@ struct uip_udpip_hdr
#endif /* CONFIG_NET_IPv6 */
/* UDP header. */
/* UDP header */
uint16 srcport;
uint16 destport;
@@ -434,7 +435,7 @@ struct uip_udpip_hdr
uint16 udpchksum;
};
/* Representation of a 48-bit Ethernet address. */
/* Representation of a 48-bit Ethernet address */
struct uip_eth_addr
{
@@ -465,7 +466,7 @@ extern void *uip_urgdata;
extern uint16 uip_urglen; /* Length of (received) urgent data */
#endif /* UIP_URGDATA > 0 */
/* The current UDP connection. */
/* The current UDP connection */
#ifdef CONFIG_NET_UDP
extern struct uip_udp_conn *uip_udp_conn;
@@ -570,7 +571,7 @@ int uip_listen(uint16 port);
int uip_unlisten(uint16 port);
/* Check if a connection has outstanding (i.e., unacknowledged) data. */
/* Check if a connection has outstanding (i.e., unacknowledged) data */
#define uip_outstanding(conn) ((conn)->len)