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netpkt: Add parameters to support specific network cards

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Supports sending and receiving data packets on specified interfaces.

Signed-off-by: zhangshuai39 <zhangshuai39@xiaomi.com>
This commit is contained in:
zhangshuai39 2025-07-04 11:28:52 +08:00 • committed by Xiang Xiao
parent 4b3070c081
commit de87836c7a
1 changed files with 23 additions and 5 deletions
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28
examples/netpkt/netpkt_main.c
View file

@ -29,7 +29,10 @@
#include <string.h>
#include <sys/socket.h>
#include <unistd.h>
#include <netinet/if_ether.h>
#include <netinet/in.h>
#include <netpacket/packet.h>
#include <net/if.h>
/****************************************************************************
* Private Functions
@ -39,11 +42,17 @@
* Name: psock_create
****************************************************************************/
static int psock_create(void)
static int psock_create(const char *ifname)
{
int sd;
struct sockaddr_ll addr;
int addrlen = sizeof(addr);
unsigned int ifindex = 0;
if (ifname && ifname[0])
{
ifindex = if_nametoindex(ifname);
}
sd = socket(AF_PACKET, SOCK_RAW, 0);
if (sd < 0)
@ -55,7 +64,8 @@ static int psock_create(void)
/* Prepare sockaddr struct */
addr.sll_family = AF_PACKET;
addr.sll_ifindex = 0;
addr.sll_ifindex = ifindex;
addr.sll_protocol = htons(ETH_P_ALL);
if (bind(sd, (const struct sockaddr *)&addr, addrlen) < 0)
{
perror("ERROR: binding socket failed");
@ -105,6 +115,7 @@ static void netpkt_usage(void)
printf(" -r receive\n");
printf(" -t transmit\n");
printf(" -v verbose\n");
printf(" -i <IF> specify interface name (e.g. eth0)\n");
printf("\n");
}
@ -116,7 +127,7 @@ static void netpkt_usage(void)
* Name: netpkt_main
****************************************************************************/
int main(int argc, FAR char *argv[])
int main(int argc, char *argv[])
{
int sd;
int i;
@ -140,6 +151,9 @@ int main(int argc, FAR char *argv[])
int do_rxtimes = 3;
int do_tx = 0;
int do_txtimes = 3;
char ifname[IFNAMSIZ];
memset(ifname, 0, sizeof(ifname));
if (argc == 1)
{
@ -149,7 +163,7 @@ int main(int argc, FAR char *argv[])
/* Parse arguments */
while ((opt = getopt(argc, argv, "artv")) != -1)
while ((opt = getopt(argc, argv, "artvi:")) != -1)
{
switch (opt)
{
@ -170,13 +184,17 @@ int main(int argc, FAR char *argv[])
verbose = 1;
break;
case 'i':
strlcpy(ifname, optarg, sizeof(ifname));
break;
default:
netpkt_usage();
return -1;
}
}
sd = psock_create();
sd = psock_create(ifname);
if (do_tx)
{