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nshlib/nsh_netcmds.c: Add a -t option to the arp command which will enable printing the entire ARP table.

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This commit is contained in:
Gregory Nutt 2019-11-03 16:19:14 -06:00
parent 768218ee81
commit 400995dec6
5 changed files with 106 additions and 7 deletions
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14
netutils/netlib/netlib_getarptab.c
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@ -90,11 +90,12 @@ struct netlib_recvfrom_response_s
* size sizeof(struct arp_entry_s)
*
* Return:
* 0 on success; a negated errno value on failure.
* The number of ARP table entries read is returnd on success; a negated
* errno value is returned on failure.
*
****************************************************************************/
int netlib_get_arptable(FAR struct arp_enty_s *arptab, unsigned int nentries)
ssize_t netlib_get_arptable(FAR struct arp_entry_s *arptab, unsigned int nentries)
{
FAR struct netlib_recvfrom_response_s *resp;
struct netlib_sendto_request_s req;
@ -104,7 +105,7 @@ int netlib_get_arptable(FAR struct arp_enty_s *arptab, unsigned int nentries)
ssize_t paysize;
ssize_t maxsize;
int fd;
int ret = EXIT_FAILURE;
int ret;
/* Allocate a buffer to hold the response */
@ -114,6 +115,7 @@ int netlib_get_arptable(FAR struct arp_enty_s *arptab, unsigned int nentries)
if (resp == NULL)
{
fprintf(stderr, "ERROR: Faile to allocat response buffer\n");
ret = -ENOMEM;
return EXIT_FAILURE;
}
@ -124,6 +126,7 @@ int netlib_get_arptable(FAR struct arp_enty_s *arptab, unsigned int nentries)
{
int errcode = errno;
fprintf(stderr, "ERROR: socket() failed: %d\n", errcode);
ret = -errcode;
goto errout_with_resp;
}
@ -140,6 +143,7 @@ int netlib_get_arptable(FAR struct arp_enty_s *arptab, unsigned int nentries)
{
int errcode = errno;
fprintf(stderr, "ERROR: send() failed: %d\n", errcode);
ret = -errcode;
goto errout_with_socket;
}
@ -148,6 +152,7 @@ int netlib_get_arptable(FAR struct arp_enty_s *arptab, unsigned int nentries)
{
int errcode = errno;
fprintf(stderr, "ERROR: recv() failed: %d\n", errcode);
ret = -errcode;
goto errout_with_socket;
}
@ -157,6 +162,7 @@ int netlib_get_arptable(FAR struct arp_enty_s *arptab, unsigned int nentries)
resp->hdr.nlmsg_len > nrecvd)
{
fprintf(stderr, "ERROR: Bad message\n");
ret = -EIO;
goto errout_with_socket;
}
@ -169,7 +175,7 @@ int netlib_get_arptable(FAR struct arp_enty_s *arptab, unsigned int nentries)
}
memcpy(arptab, resp->data, paysize);
ret = EXIT_SUCCESS;
ret = paysize / sizeof(struct arp_entry_s);
errout_with_socket:
close(fd);