ef8d499e2d
This commit adds a new TCP/IP service to MINIX 3. As its core, the service uses the lwIP TCP/IP stack for maintenance reasons. The service aims to be compatible with NetBSD userland, including its low-level network management utilities. It also aims to support modern features such as IPv6. In summary, the new LWIP service has support for the following main features: - TCP, UDP, RAW sockets with mostly standard BSD API semantics; - IPv6 support: host mode (complete) and router mode (partial); - most of the standard BSD API socket options (SO_); - all of the standard BSD API message flags (MSG_); - the most used protocol-specific socket and control options; - a default loopback interface and the ability to create one more; - configuration-free ethernet interfaces and driver tracking; - queuing and multiple concurrent requests to each ethernet driver; - standard ioctl(2)-based BSD interface management; - radix tree backed, destination-based routing; - routing sockets for standard BSD route reporting and management; - multicast traffic and multicast group membership tracking; - Berkeley Packet Filter (BPF) devices; - standard and custom sysctl(7) nodes for many internals; - a slab allocation based, hybrid static/dynamic memory pool model. Many of its modules come with fairly elaborate comments that cover many aspects of what is going on. The service is primarily a socket driver built on top of the libsockdriver library, but for BPF devices it is at the same time also a character driver. Change-Id: Ib0c02736234b21143915e5fcc0fda8fe408f046f
64 lines
2.8 KiB
C
64 lines
2.8 KiB
C
#ifndef MINIX_NET_LWIP_PKTSOCK_H
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#define MINIX_NET_LWIP_PKTSOCK_H
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#include "mcast.h"
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/* Packet-level socket, shared by UDP and RAW. */
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struct pktsock {
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struct ipsock pkt_ipsock; /* IP socket object, MUST be first */
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struct pbuf *pkt_rcvhead; /* receive buffer, first packet */
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struct pbuf **pkt_rcvtailp; /* receive buffer, last ptr-ptr */
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size_t pkt_rcvlen; /* receive buffer, length in bytes */
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struct mcast_head pkt_mcast; /* multicast membership list */
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ip6_addr_p_t pkt_srcaddr; /* IPV6_PKTINFO: source address */
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uint32_t pkt_ifindex; /* IPV6_KPTINFO: interface index */
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};
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#define pktsock_get_ipsock(pkt) (&(pkt)->pkt_ipsock)
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#define pktsock_get_ifindex(pkt) ((pkt)->pkt_ifindex)
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/* Options when sending packets. */
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struct pktopt {
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uint8_t pkto_flags; /* packet send flags (PKTOF_) */
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uint8_t pkto_tos; /* type of service for the packet */
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uint8_t pkto_ttl; /* time-to-live for the packet */
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uint8_t pkto_mcast_ttl; /* time-to-live for multicast packet */
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ip6_addr_p_t pkto_srcaddr; /* IPV6_PKTINFO: source address */
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unsigned int pkto_ifindex; /* IPV6_PKTINFO: interface index */
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};
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#define PKTOF_TTL 0x01 /* send packet with custom TTL value */
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#define PKTOF_TOS 0x02 /* send packet with custom TOS value */
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#define PKTOF_PKTINFO 0x04 /* send packet with src addr, on if. */
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int pktsock_socket(struct pktsock * pkt, int domain, size_t sndbuf,
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size_t rcvbuf, struct sock ** sockp);
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int pktsock_test_input(struct pktsock * pkt, struct pbuf * pbuf);
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void pktsock_input(struct pktsock * pkt, struct pbuf * pbuf,
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const ip_addr_t * srcaddr, uint16_t port);
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int pktsock_get_pktinfo(struct pktsock * pkt, struct pktopt * pkto,
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struct ifdev ** ifdevp, ip_addr_t * src_addrp);
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int pktsock_get_ctl(struct pktsock * pkt, const struct sockdriver_data * ctl,
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socklen_t ctl_len, struct pktopt * pkto);
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int pktsock_get_data(struct pktsock * pkt, const struct sockdriver_data * data,
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size_t len, struct pbuf * pbuf);
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int pktsock_pre_recv(struct sock * sock, endpoint_t user_endpt, int flags);
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int pktsock_recv(struct sock * sock, const struct sockdriver_data * data,
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size_t len, size_t * off, const struct sockdriver_data * ctl,
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socklen_t ctl_len, socklen_t * ctl_off, struct sockaddr * addr,
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socklen_t * addr_len, endpoint_t user_endpt, int flags, size_t min,
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int * rflags);
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int pktsock_test_recv(struct sock * sock, size_t min, size_t * size);
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void pktsock_set_mcaware(struct pktsock * pkt);
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int pktsock_setsockopt(struct pktsock * pkt, int level, int name,
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const struct sockdriver_data * data, socklen_t len,
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struct ipopts * ipopts);
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int pktsock_getsockopt(struct pktsock * pkt, int level, int name,
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const struct sockdriver_data * data, socklen_t * len,
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struct ipopts * ipopts);
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void pktsock_shutdown(struct pktsock * pkt, unsigned int mask);
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void pktsock_close(struct pktsock * pkt);
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size_t pktsock_get_recvlen(struct pktsock * pkt);
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#endif /* !MINIX_NET_LWIP_PKTSOCK_H */
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