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#include "common.h"
LIBNET_API
libnet_ptag_t libnet_build_lldp_chassis(const uint8_t subtype,
const uint8_t *value,
const uint8_t value_s,
libnet_t *l,
libnet_ptag_t ptag)
{
struct libnet_lldp_hdr hdr = { 0 };
uint16_t type_and_len;
libnet_pblock_t *p;
uint32_t n, h;
if (l == NULL)
return (-1);
if (value == NULL)
{
snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
"%s(): Chassis ID string is NULL", __func__);
return (-1);
}
if (value_s == 0)
{
snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
"%s(): Incorrect Chassis ID string length", __func__);
return (-1);
}
/* size of memory block */
n = h = LIBNET_LLDP_TLV_HDR_SIZE + /* TLV Header size */
LIBNET_LLDP_SUBTYPE_SIZE + /* Chassis ID subtype size */
value_s; /* Chassis ID string length */
LIBNET_LLDP_TLV_SET_TYPE(hdr.tlv_info, LIBNET_LLDP_CHASSIS_ID);
LIBNET_LLDP_TLV_SET_LEN(hdr.tlv_info, value_s + LIBNET_LLDP_SUBTYPE_SIZE);
/*
* Find the existing protocol block if a ptag is specified, or create
* a new one.
*/
p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_LLDP_CHASSIS_H);
if (p == NULL)
{
return (-1);
}
type_and_len = htons(hdr.tlv_info);
if (libnet_pblock_append(l, p, &type_and_len, sizeof(type_and_len)) == -1)
goto bad;
if (libnet_pblock_append(l, p, &subtype, sizeof(subtype)) == -1)
goto bad;
if (libnet_pblock_append(l, p, value, value_s) == -1)
goto bad;
return (ptag ? ptag
: libnet_pblock_update(l, p, h, LIBNET_PBLOCK_LLDP_CHASSIS_H));
bad:
libnet_pblock_delete(l, p);
return (-1);
}
LIBNET_API
libnet_ptag_t libnet_build_lldp_port(const uint8_t subtype,
const uint8_t *value,
const uint8_t value_s,
libnet_t *l,
libnet_ptag_t ptag)
{
struct libnet_lldp_hdr hdr = { 0 };
uint16_t type_and_len;
libnet_pblock_t *p;
uint32_t n, h;
if (l == NULL)
return (-1);
if (value == NULL)
{
snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
"%s(): Port ID string is NULL", __func__);
return (-1);
}
if (value_s == 0)
{
snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
"%s(): Incorrect Port ID string length", __func__);
return (-1);
}
/* size of memory block */
n = h = LIBNET_LLDP_TLV_HDR_SIZE + /* TLV Header size */
LIBNET_LLDP_SUBTYPE_SIZE + /* Port ID subtype size */
value_s; /* Port ID string length */
LIBNET_LLDP_TLV_SET_TYPE(hdr.tlv_info, LIBNET_LLDP_PORT_ID);
LIBNET_LLDP_TLV_SET_LEN(hdr.tlv_info, value_s + LIBNET_LLDP_SUBTYPE_SIZE);
/*
* Find the existing protocol block if a ptag is specified, or create
* a new one.
*/
p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_LLDP_PORT_H);
if (p == NULL)
return (-1);
type_and_len = htons(hdr.tlv_info);
if (libnet_pblock_append(l, p, &type_and_len, sizeof(type_and_len)) == -1)
goto bad;
if (libnet_pblock_append(l, p, &subtype, sizeof(subtype)) == -1)
goto bad;
if (libnet_pblock_append(l, p, value, value_s) == -1)
goto bad;
if (ptag)
return ptag;
return libnet_pblock_update(l, p, h, LIBNET_PBLOCK_LLDP_PORT_H);
bad:
libnet_pblock_delete(l, p);
return (-1);
}
LIBNET_API
libnet_ptag_t libnet_build_lldp_ttl(const uint16_t ttl,
libnet_t *l,
libnet_ptag_t ptag)
{
struct libnet_lldp_hdr hdr = { 0 };
uint16_t type_and_len;
libnet_pblock_t *p;
uint32_t n, h;
if (l == NULL)
return (-1);
if (ttl > UINT16_MAX)
{
snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
"%s(): Incorrect value of ttl", __func__);
return (-1);
}
/* size of memory block */
n = h = LIBNET_LLDP_TLV_HDR_SIZE + /* TLV Header size */
sizeof(uint16_t); /* Size of 2 octets */
LIBNET_LLDP_TLV_SET_TYPE(hdr.tlv_info, LIBNET_LLDP_TTL);
LIBNET_LLDP_TLV_SET_LEN(hdr.tlv_info, sizeof(uint16_t)); /* Size is 2 octets */
/*
* Find the existing protocol block if a ptag is specified, or create
* a new one.
*/
p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_LLDP_TTL_H);
if (p == NULL)
return (-1);
type_and_len = htons(hdr.tlv_info);
if (libnet_pblock_append(l, p, &type_and_len, sizeof(type_and_len)) == -1)
goto bad;
if (libnet_pblock_append(l, p, &ttl, sizeof(ttl)) == -1)
goto bad;
if (ptag)
return ptag;
return libnet_pblock_update(l, p, h, LIBNET_PBLOCK_LLDP_TTL_H);
bad:
libnet_pblock_delete(l, p);
return (-1);
}
LIBNET_API
libnet_ptag_t libnet_build_lldp_end(libnet_t *l, libnet_ptag_t ptag)
{
struct libnet_lldp_hdr hdr = { 0 };
uint16_t type_and_len;
libnet_pblock_t *p;
uint32_t n, h;
if (l == NULL)
return (-1);
/* size of memory block */
n = h = LIBNET_LLDP_TLV_HDR_SIZE; /* TLV Header size */
LIBNET_LLDP_TLV_SET_TYPE(hdr.tlv_info, LIBNET_LLDP_END_LLDPDU);
LIBNET_LLDP_TLV_SET_LEN(hdr.tlv_info, 0);
/*
* Find the existing protocol block if a ptag is specified, or create
* a new one.
*/
p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_LLDP_TTL_H);
if (p == NULL)
return (-1);
type_and_len = htons(hdr.tlv_info);
if (libnet_pblock_append(l, p, &type_and_len, sizeof(type_and_len)) == -1)
goto bad;
if (ptag)
return ptag;
return libnet_pblock_update(l, p, h, LIBNET_PBLOCK_LLDP_TTL_H);
bad:
libnet_pblock_delete(l, p);
return (-1);
}
LIBNET_API
libnet_ptag_t libnet_build_lldp_org_spec(const uint8_t *value,
const uint16_t value_s,
libnet_t *l,
libnet_ptag_t ptag)
{
struct libnet_lldp_hdr hdr = { 0 };
uint16_t type_and_len;
libnet_pblock_t *p;
uint32_t n, h;
if (l == NULL)
return (-1);
if (value == NULL)
{
snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
"%s(): Organization Specific string is NULL", __func__);
return (-1);
}
if ((value_s < 4) || (value_s > 511))
{
snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
"%s(): Incorrect TLV information string length", __func__);
return (-1);
}
LIBNET_LLDP_TLV_SET_TYPE(hdr.tlv_info, LIBNET_LLDP_ORG_SPEC);
LIBNET_LLDP_TLV_SET_LEN(hdr.tlv_info, value_s);
/* size of memory block */
n = h = LIBNET_LLDP_TLV_HDR_SIZE + /* TLV Header size */
value_s; /* TLV Information length*/
/*
* Find the existing protocol block if a ptag is specified, or create
* a new one.
*/
p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_LLDP_ORG_SPEC_H);
if (p == NULL)
return (-1);
type_and_len = htons(hdr.tlv_info);
if (libnet_pblock_append(l, p, &type_and_len, sizeof(type_and_len)) == -1)
goto bad;
if (libnet_pblock_append(l, p, value, value_s) == -1)
goto bad;
if (ptag)
return ptag;
return libnet_pblock_update(l, p, h, LIBNET_PBLOCK_LLDP_ORG_SPEC_H);
bad:
libnet_pblock_delete(l, p);
return (-1);
}
/**
* Local Variables:
* indent-tabs-mode: nil
* c-file-style: "stroustrup"
* End:
*/
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