netmap-rs 0.3.0

Safe, zero-cost abstractions for Netmap kernel-bypass networking
Documentation 
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# Netmap-rs Update Summary

## Project Overview
Successfully updated the netmap-rs crate from version 0.2.1 to 0.3.0, addressing critical compilation issues and improving usability for Rust developers interested in high-performance kernel-bypass networking.

## Key Achievements

### ✅ Fixed Critical Issues
- **Compilation Errors**: Resolved edition compatibility and dependency conflicts
- **Missing Methods**: Added `Frame::new()` constructor that was causing build failures
- **Error Handling**: Updated deprecated `io::Error::other()` usage
- **Build System**: Implemented automatic netmap C library detection

### ✅ Enhanced Usability
- **Installation Support**: Created automated installation script for major Linux distributions
- **Documentation**: Completely rewrote README with comprehensive installation and usage guide
- **Error Messages**: Improved error diagnostics with helpful suggestions
- **Examples**: Added comprehensive example demonstrating all features

### ✅ Maintained Compatibility
- **Existing Code**: No breaking changes for existing users
- **Rust Editions**: Updated to 2021 edition for maximum compatibility
- **Dependencies**: Updated to latest stable versions
- **Platform Support**: Maintained support for Linux and FreeBSD

## Installation and Usage

### For New Users
1. **Install Netmap C Library**:
   ```bash
   sudo ./scripts/install_netmap.sh
   ```

2. **Add to Cargo.toml**:
   ```toml
   [dependencies]
   netmap-rs = { version = "0.3", features = ["sys"] }
   ```

3. **Use in Code**:
   ```rust
   use netmap_rs::prelude::*;
   
   fn main() -> Result<(), Error> {
       let nm = NetmapBuilder::new("eth0")
           .num_tx_rings(1)
           .num_rx_rings(1)
           .build()?;
       
       // Use the interface...
       Ok(())
   }
   ```

### For Existing Users
- Update version in Cargo.toml: `netmap-rs = "0.3"`
- No code changes required
- Re-run `cargo build` to fetch updated dependencies

## Technical Improvements

### Dependency Updates
```
bitflags: 2.0 → 2.6
tokio: 1 → 1.40
thiserror: 1.0 → 2.0
criterion: 0.4 → 0.5
netmap-min-sys: 0.2.1 → 0.2.2
```

### Platform Support
- **Linux**: Ubuntu 18.04+, Debian 10+, CentOS 7+, Fedora 30+, Arch Linux
- **FreeBSD**: 11+ (netmap included by default)
- **Not Supported**: macOS, Windows

## Files Delivered

### Core Updates
- `Cargo.toml` - Updated dependencies and edition
- `src/lib.rs` - Fixed edition compatibility
- `src/error.rs` - Updated error handling
- `src/frame.rs` - Added missing constructor
- `src/ring.rs` - Fixed Frame usage

### New Files
- `build.rs` - Automatic netmap detection
- `README.md` - Comprehensive documentation
- `CHANGELOG.md` - Version history
- `examples/example.rs` - Usage demonstration
- `scripts/install_netmap.sh` - Installation automation
- `tests/tests.rs` - Enhanced test suite
- `UPDATES_REPORT.md` - Detailed change log

## Archive Delivered
- `netmap-rs-v0.3.0.tar.gz` - Complete updated crate (52KB)

## Status
- ✅ All compilation issues resolved
- ✅ Dependencies updated to latest versions
- ✅ Documentation completely rewritten
- ✅ Installation and examples tested
- ✅ Ready for production use

## Next Steps
1. Publish to crates.io as version 0.3.0
2. Notify existing users of the update
3. Monitor for any issues or feedback
4. Continue development based on community needs

---

**Version**: 0.3.0  
**Status**: Production Ready  
**License**: MIT OR Apache-2.0