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Signed-off-by: rayylee <rayylee@foxmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,12 +1,87 @@ | ||
| extern crate alloc; | ||
| use alloc::sync::Arc; | ||
| use alloc::collections::VecDeque; | ||
| use core::cmp::min; | ||
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| use axsync::Mutex; | ||
| use axerrno::AxResult; | ||
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| struct NetlinkBuffer<T> { | ||
| buffer: VecDeque<T>, | ||
| capacity: usize, | ||
| } | ||
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| impl<T> NetlinkBuffer<T> { | ||
| fn new(capacity: usize) -> Self { | ||
| NetlinkBuffer { | ||
| buffer: VecDeque::with_capacity(capacity), | ||
| capacity, | ||
| } | ||
| } | ||
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| fn push(&mut self, element: T) { | ||
| if self.buffer.len() == self.capacity { | ||
| self.buffer.pop_front(); | ||
| } | ||
| self.buffer.push_back(element); | ||
| } | ||
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| pub struct NlSocket { | ||
| fn pop(&mut self) -> Option<T> { | ||
| self.buffer.pop_front() | ||
| } | ||
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| fn len(&self) -> usize { | ||
| self.buffer.len() | ||
| } | ||
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| fn capacity(&self) -> usize { | ||
| self.capacity | ||
| } | ||
| } | ||
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| impl NlSocket { | ||
| pub struct NetlinkSocket { | ||
| rx_buffer: Arc<Mutex<NetlinkBuffer<u8>>>, | ||
| tx_buffer: Arc<Mutex<NetlinkBuffer<u8>>>, | ||
| pub nl_groups: u32, | ||
| } | ||
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| impl NetlinkSocket { | ||
| pub fn new() -> Self { | ||
| NlSocket {} | ||
| NetlinkSocket { | ||
| rx_buffer: Arc::new(Mutex::new(NetlinkBuffer::new(1024))), | ||
| tx_buffer: Arc::new(Mutex::new(NetlinkBuffer::new(1024))), | ||
| nl_groups: 0, | ||
| } | ||
| } | ||
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| pub fn bind(&mut self, groups: u32) -> AxResult { | ||
| self.nl_groups = groups; | ||
| Ok(()) | ||
| } | ||
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| pub fn send(&self, buf: &[u8]) -> AxResult<usize> { | ||
| let mut rx = self.rx_buffer.lock(); | ||
| for byte in buf.iter() { | ||
| rx.push(*byte); | ||
| } | ||
| Ok(buf.len()) | ||
| } | ||
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| pub fn fill_tx(&self, buf: &[u8]) -> AxResult<usize> { | ||
| let mut tx = self.tx_buffer.lock(); | ||
| let length = min(buf.len(), tx.capacity() - tx.len()); | ||
| for i in 0..length { | ||
| tx.push(buf[i]); | ||
| } | ||
| Ok(length) | ||
| } | ||
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| pub fn recv_from(&self, buf: &mut [u8]) -> AxResult<usize> { | ||
| let mut tx = self.tx_buffer.lock(); | ||
| let length = min(buf.len(), tx.len()); | ||
| for i in 0..length { | ||
| buf[i] = tx.pop().unwrap(); | ||
| } | ||
| Ok(length) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| use axprocess::current_process; | ||
| use super::socket::{Socket, SocketInner}; | ||
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| pub fn netlink_unicast() | ||
| { | ||
| let process = current_process(); | ||
| let fd_table = process.fd_manager.fd_table.lock(); | ||
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| // # define NLMSG_OK(nlh,len) ((len) >= (int)sizeof(struct nlmsghdr) && \ | ||
| // (nlh)->nlmsg_len >= sizeof(struct nlmsghdr) && \ | ||
| // (nlh)->nlmsg_len <= (len)) | ||
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| let mut buffer: [u8; 20] = [0; 20]; | ||
| buffer[0] = 16; // nlmsg_len: sizeof(struct nlmsghdr) | ||
| buffer[4] = 16; // nlmsg_type: RTM_NEWLINK | ||
| buffer[6] = 65; // 'A' | ||
| buffer[7] = 66; // 'B' | ||
| buffer[8] = 67; // 'C' | ||
| buffer[9] = 68; // 'D' | ||
| buffer[10] = 69; // 'E' | ||
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| for i in 0..fd_table.len() { | ||
| if let Some(file) = fd_table[i].as_ref() { | ||
| if let Some(s_file) = file.as_any().downcast_ref::<Socket>() { | ||
| let inner = s_file.inner.lock(); | ||
| if let SocketInner::Netlink(s) = &*inner { | ||
| let _ = s.fill_tx(&buffer); | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| } | ||
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