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99ee94728a
refer to https://man7.org/linux/man-pages/man7/ip.7.html IP_MULTICAST_IF (since Linux 1.2) Set the local device for a multicast socket. The argument for setsockopt(2) is an ip_mreqn or (since Linux 3.5) ip_mreq structure similar to IP_ADD_MEMBERSHIP, or an in_addr structure. (The kernel determines which structure is being passed based on the size passed in optlen.) For getsockopt(2), the argument is an in_addr structure. refer to https://man7.org/linux/man-pages/man7/ipv6.7.html IPV6_MULTICAST_IF Set the device for outgoing multicast packets on the socket. This is allowed only for SOCK_DGRAM and SOCK_RAW socket. The argument is a pointer to an interface index (see netdevice(7)) in an integer. testcase1: TEST_IMPL(udp_multicast_interface) { /* TODO(gengjiawen): Fix test on QEMU. */ RETURN_SKIP("Test does not currently work in QEMU"); int r; uv_udp_send_t req; uv_buf_t buf; struct sockaddr_in addr; struct sockaddr_in baddr; close_cb_called = 0; sv_send_cb_called = 0; ASSERT(0 == uv_ip4_addr("239.255.0.1", TEST_PORT, &addr)); r = uv_udp_init(uv_default_loop(), &server); ASSERT(r == 0); ASSERT(0 == uv_ip4_addr("0.0.0.0", 0, &baddr)); r = uv_udp_bind(&server, (const struct sockaddr*)&baddr, 0); ASSERT(r == 0); r = uv_udp_set_multicast_interface(&server, "0.0.0.0"); ASSERT(r == 0); /* server sends "PING" */ buf = uv_buf_init("PING", 4); r = uv_udp_send(&req, &server, &buf, 1, (const struct sockaddr*)&addr, sv_send_cb); ASSERT(r == 0); ASSERT(close_cb_called == 0); ASSERT(sv_send_cb_called == 0); /* run the loop till all events are processed */ uv_run(uv_default_loop(), UV_RUN_DEFAULT); ASSERT(sv_send_cb_called == 1); ASSERT(close_cb_called == 1); ASSERT(client.send_queue_size == 0); ASSERT(server.send_queue_size == 0); MAKE_VALGRIND_HAPPY(); return 0; } testcase2: TEST_IMPL(udp_multicast_interface6) { /* TODO(gengjiawen): Fix test on QEMU. */ RETURN_SKIP("Test does not currently work in QEMU"); int r; uv_udp_send_t req; uv_buf_t buf; struct sockaddr_in6 addr; struct sockaddr_in6 baddr; if (!can_ipv6()) RETURN_SKIP("IPv6 not supported"); close_cb_called = 0; sv_send_cb_called = 0; ASSERT(0 == uv_ip6_addr("::1", TEST_PORT, &addr)); r = uv_udp_init(uv_default_loop(), &server); ASSERT(r == 0); ASSERT(0 == uv_ip6_addr("::", 0, &baddr)); r = uv_udp_bind(&server, (const struct sockaddr*)&baddr, 0); ASSERT(r == 0); r = uv_udp_set_multicast_interface(&server, "::1%lo0"); r = uv_udp_set_multicast_interface(&server, NULL); ASSERT(r == 0); /* server sends "PING" */ buf = uv_buf_init("PING", 4); r = uv_udp_send(&req, &server, &buf, 1, (const struct sockaddr*)&addr, sv_send_cb); ASSERT(r == 0); ASSERT(close_cb_called == 0); ASSERT(sv_send_cb_called == 0); /* run the loop till all events are processed */ uv_run(uv_default_loop(), UV_RUN_DEFAULT); ASSERT(sv_send_cb_called == 1); ASSERT(close_cb_called == 1); MAKE_VALGRIND_HAPPY(); return 0; } Signed-off-by: wangchen <wangchen41@xiaomi.com> |
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|---|---|---|
| .. | ||
| arp | ||
| bluetooth | ||
| can | ||
| devif | ||
| icmp | ||
| icmpv6 | ||
| ieee802154 | ||
| igmp | ||
| inet | ||
| ipforward | ||
| ipfrag | ||
| local | ||
| mld | ||
| nat | ||
| neighbor | ||
| netdev | ||
| netfilter | ||
| netlink | ||
| pkt | ||
| procfs | ||
| route | ||
| rpmsg | ||
| sixlowpan | ||
| socket | ||
| tcp | ||
| udp | ||
| usrsock | ||
| utils | ||
| CMakeLists.txt | ||
| Kconfig | ||
| Makefile | ||
| net_initialize.c | ||
| README.txt | ||
README
======
Directory Structure
===================
nuttx/
|
`- net/
|
+- arp - Address resolution protocol (IPv4)
+- bluetooth - PF_BLUETOOTH socket interface
+- devif - Stack/device interface layer
+- ipfrag - Fragmentation and reassembly
+- icmp - Internet Control Message Protocol (IPv4)
+- icmpv6 - Internet Control Message Protocol (IPv6)
+- ieee802154 - PF_IEEE802154 socket interface
+- inet - PF_INET/PF_INET6 socket interface
+- ipforward - IP forwarding logic
+- local - Unix domain (local) sockets
+- mld - Multicast Listener Discovery (MLD)
+- neighbor - Neighbor Discovery Protocol (IPv6)
+- netdev - Socket network device interface
+- netlink - Netlink IPC socket interface
+- pkt - "Raw" packet socket support
+- sixlowpan - 6LoWPAN implementation
+- socket - BSD socket interface
+- route - Routing table support
+- tcp - Transmission Control Protocol
+- udp - User Datagram Protocol
+- usrsock - User socket API for user-space networking stack
`- utils - Miscellaneous utility functions
+-------------------------------------------------------------------++------------------------+
| Application layer || usrsock daemon |
+-------------------------------------------------------------------++------------------------+
+-------------------------------------------------------------------++----------------+ +-----+
| Socket layer (socket/) || /dev/usrsock | | |
+-------------------------------------------------------------------++----------------+ | |
+------------++--------------------------------------------------++-------------------+ | |
| Network || Protocol stacks (arp, ipv6, icmp, pkt, tcp, udp) || usrsock/ | | |
| Device |+--------------------------------------------------++-------------------+ | |
| Interface |+------------------------------------++---------------------------------+ | |
| (netdev/) || Network Device Interface (devif/) || Utilities | | |
+------------++------------------------------------++---------------------------------+ | |
+----------------------------------------------------------------+ | |
| Network Device Drivers | | HAL |
+----------------------------------------------------------------+ +-----+
+----------------------------------------------------------------+ +--------------------------+
| Networking Hardware | | Hardware TCP/IP Stack |
+----------------------------------------------------------------+ +--------------------------+