When implementing IPv6-related logic, we found the `net_ipv6_pref2mask`
and `net_ipv6addr_copy` are using different argument order:
```
net_ipv6addr_copy(ifaddr->addr, addr);
net_ipv6_pref2mask(preflen, ifaddr->mask);
```
Change the order to:
```
net_ipv6addr_copy(ifaddr->addr, addr);
net_ipv6_pref2mask(ifaddr->mask, preflen);
```
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
1. Supporting `SIOCSIFADDR` and `SIOCDIFADDR` with Linux in6_ifreq struct to manage ipv6 addresses.
Ref: https://man7.org/linux/man-pages/man7/netdevice.7.html
2. Supporting alias like 'eth0:0' for multiple IPv6 addresses, to keep previous ioctl `SIOCGLIFADDR`, `SIOCSLIFADDR`, `SIOCGLIFNETMASK` and `SIOCSLIFNETMASK` working.
Ref: https://man7.org/linux/man-pages/man8/ifconfig.8.html
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
Note that user-space related code, like procfs and lifreq related ioctl commands, are not touched in this commit.
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
Compatible with previous usage, because may network drivers are using old member name to print logs, and there's no significant need to change them now.
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
Prepare for multiple IPv6 addresses per net device, then we can notify
add/remove of a single address later.
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
add ref count for ipv4 multicast and leave the multicast group when close
behavior alignment with linux.
Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
some tools use this command to distinguish which device returned via getifaddrs() are wireless network device.
Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
For datagram unix sockets, the `SO_SNDBUF` value imposes an upper limit on the size of outgoing datagrams.
Note: We don't support to change the buffer size yet, so only add support to getsockopt now.
Refs: https://man7.org/linux/man-pages/man7/unix.7.html
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
1. Both IPv6 addresses and net masks should be stored in network byte
order
2. Fix last 2 bytes of mask applying (although it seldom triggers)
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
Allows setting the advertised route lifetime, and also to set
it to 0 for advertising only the prefix.
From RFC4861:
A router might want to send Router Advertisements without advertising
itself as a default router. For instance, a router might advertise
prefixes for stateless address autoconfiguration while not wishing to
forward packets. Such a router sets the Router Lifetime field in
outgoing advertisements to zero.
==1729315==ERROR: AddressSanitizer: heap-use-after-free on address 0xf0501d60 at pc 0x032ffe43 bp 0xef4ed158 sp 0xef4ed148
READ of size 2 at 0xf0501d60 thread T0
#0 0x32ffe42 in nxsem_wait semaphore/sem_wait.c:94
#1 0x3548cf5 in _net_timedwait utils/net_lock.c:97
#2 0x3548f48 in net_sem_timedwait utils/net_lock.c:236
#3 0x3548f8c in net_sem_wait utils/net_lock.c:318
#4 0x350124d in local_accept local/local_accept.c:246
#5 0x3492719 in psock_accept socket/accept.c:149
#6 0x3492bcc in accept4 socket/accept.c:280
#7 0x662dc04 in accept net/lib_accept.c:50
#8 0x55c81ab in kvdb_loop kvdb/server.c:415
#9 0x55c860a in kvdbd_main kvdb/server.c:458
#10 0x33d968b in nxtask_startup sched/task_startup.c:70
#11 0x32ec039 in nxtask_start task/task_start.c:134
#12 0x34109be in pre_start sim/sim_initialstate.c:52
0xf0501d60 is located 288 bytes inside of 420-byte region [0xf0501c40,0xf0501de4)
freed by thread T0 here:
#0 0xf7aa6a3f in __interceptor_free ../../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:127
#1 0x73aa06e in host_free sim/posix/sim_hostmemory.c:192
#2 0x34131d6 in mm_free sim/sim_heap.c:230
#3 0x3409388 in free umm_heap/umm_free.c:49
#4 0x35631f3 in local_free local/local_conn.c:225
#5 0x3563f75 in local_release local/local_release.c:129
#6 0x34f5a32 in local_close local/local_sockif.c:785
#7 0x3496ee8 in psock_close socket/net_close.c:102
#8 0x36500bc in sock_file_close socket/socket.c:115
#9 0x3635f6c in file_close vfs/fs_close.c:74
#10 0x3632439 in nx_close_from_tcb inode/fs_files.c:670
#11 0x36324f3 in nx_close inode/fs_files.c:697
#12 0x3632557 in close inode/fs_files.c:735
#13 0x55be289 in property_set_ kvdb/client.c:210
#14 0x55c0309 in property_set_int32_ kvdb/common.c:226
#15 0x55c03f5 in property_set_int32_oneway kvdb/common.c:236
Signed-off-by: ligd <liguiding1@xiaomi.com>
Changed implementation to use the Kernel network stack when
usrsock daemon returns an error.
This change allows the Kernel network stack to be used instead
of UsrSock when opening a Socket at a time when a VPN configured
with TUN is enabled.
Some use cases, such as VPN, use both the device's network
stack with the Usrsock daemon and the Kernel's network stack.
Therefore, remove NET_TCP_NO_STACK/NET_UDP_NO_STACK select
from Usrsock's Kconfig.
The previous iob_trimhead added dev->iob->io_offset, so if the
input frame is not merged into the ofo segment, we need to reset
dev->iob->io_offset so that the subsequent tcp_send can properly
assemble packets.
Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
We may just free some TCP connections before monitor stopped, e.g.
sacrificie a TCP conn in `tcp_alloc` will just call `tcp_free` and reuse
the connection. But we noticed that the TCP monitor is not released in
`tcp_free` because it is mounted on `conn->connevents` instead of
`conn->sconn.list` while `tcp_free` only release the latter.
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
with nonblocking sockets, POLLOUT is returned when the application
calls poll even if the send buffer is full
Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
Normally, `SO_ERROR` for disconn events will be set by `tcp_poll_eventhandler`, but when the socket is closed before poll, we should also set the `SO_ERROR`.
On Linux, `tcp_poll` returns `EPOLLERR` event when `sk->sk_err` has value but doesn't let `poll` fail (doesn't set `errno`). https://github.com/torvalds/linux/blob/v6.5/net/ipv4/tcp.c#L594-L596
Note: `sk->sk_err` can be get by socket option `SO_ERROR` on Linux, so `POLLERR` will always be together with `SO_ERROR`.
Common libs like curl may try to read `SO_ERROR` on `POLLERR`.
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
Summary
The following compilation error occurs after configuring CONFIG_DEBUG_OPTLEVEL="-O3"
CC: local/local_fifo.c In file included from local/local_fifo.c:25:
In function 'local_format_name',
inlined from 'local_cs_name' at local/local_fifo.c:101:3,
inlined from 'local_create_fifos' at local/local_fifo.c:431:3:
local/local_fifo.c:84:16: error: '%x' directive output may be truncated writing between 1 and 8 bytes into a region of size between 5 and 112 [-Werror=format-truncation=]
84 | CONFIG_NET_LOCAL_VFS_PATH "/%s%s%" PRIx32,
| ^~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: wangming9 <wangming9@xiaomi.com>
conn->sendsize is used in rpmsg_socket_ept_cb() and
rpmsg_socket_connect_internal(), the connected event may be missed
as stated below:
1. in rpmsg_socket_connect_internal(), judge conn->sendsize == 0
and prepare to wait sendsem;
2. interrupt by rptun thread, rpmsg_socket_ept_cb() is called to
update conn->sendsize and post the sendsem, but the no one wait
rx sem yet, so not post (see rpmsg_socket_post());
3. return to rpmsg_socket_connect_internal() to wait the sendsem, but
has miss the connected event.
So add recvlock in rpmsg_socket_connect_internal() also.
Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
After the sack is enabled and the ofosegs has gap, tcp cannot update the
tx_unacked, so the peer received packets are retransmitted after the
timer timeout.
So update tx_unacked first.
Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
