# packet_capture

**Repository Path**: xzplink/packet_capture

## Basic Information

- **Project Name**: packet_capture
- **Description**: re-encapsulation for af-packet capture data-link layer packets(by raw socket)!
- **Primary Language**: C
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 1
- **Forks**: 0
- **Created**: 2018-02-23
- **Last Updated**: 2022-04-23

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README


/* -------------------------------------------------------------------------- */
/*              afpacket 抓包流程            */
/* -------------------------------------------------------------------------- */
// init-----------------
//      create socket: raw socket
//      get nic hw_addr
//      get nic index
//      set sll.xxx
//
// start-----------------
//      bind sockfd -->sll; check pending errors
//      set nic promisc
//      get arp type
//      determine version
//      ring: create(caculate_layout) -> mmap -> setup
//      reset packet statistics
//
// end------------------
//      rings: free -> munmap -> setsockopt() -> close sockfd
//      value free and set null
/* -------------------------------------------------------------------------- */