cregit-Linux how code gets into the kernel

Release 4.10 samples/bpf/sock_example.h

Directory: samples/bpf
#include <stdlib.h>
#include <stdio.h>
#include <linux/unistd.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <linux/if_ether.h>
#include <net/if.h>
#include <linux/if_packet.h>
#include <arpa/inet.h>
#include "libbpf.h"

static inline int open_raw_sock(const char *name) { struct sockaddr_ll sll; int sock; sock = socket(PF_PACKET, SOCK_RAW | SOCK_NONBLOCK | SOCK_CLOEXEC, htons(ETH_P_ALL)); if (sock < 0) { printf("cannot create raw socket\n"); return -1; } memset(&sll, 0, sizeof(sll)); sll.sll_family = AF_PACKET; sll.sll_ifindex = if_nametoindex(name); sll.sll_protocol = htons(ETH_P_ALL); if (bind(sock, (struct sockaddr *)&sll, sizeof(sll)) < 0) { printf("bind to %s: %s\n", name, strerror(errno)); close(sock); return -1; } return sock; }


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Directory: samples/bpf
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