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tlv_dcbx.c
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tlv_dcbx.c
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/*******************************************************************************
LLDP Agent Daemon (LLDPAD) Software
Copyright(c) 2007-2010 Intel Corporation.
This program is free software; you can redistribute it and/or modify it
under the terms and conditions of the GNU General Public License,
version 2, as published by the Free Software Foundation.
This program is distributed in the hope it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
The full GNU General Public License is included in this distribution in
the file called "COPYING".
Contact Information:
open-lldp Mailing List <[email protected]>
*******************************************************************************/
#include <stdlib.h>
#include <assert.h>
#include "lldp.h"
#include "dcb_types.h"
#include "lldp_tlv.h"
#include "tlv_dcbx.h"
#include "dcb_protocol.h"
#include "lldp_dcbx.h"
#include "lldp/states.h"
#include "lldp/agent.h"
#include "messages.h"
bool process_dcbx_ctrl_tlv(struct port *port, struct lldp_agent *);
bool process_dcbx_pg_tlv(struct port *port, struct lldp_agent *);
bool process_dcbx_pfc_tlv(struct port *port, struct lldp_agent *);
bool process_dcbx_app_tlv(struct port *port, struct lldp_agent *);
bool process_dcbx_llink_tlv(struct port *port, struct lldp_agent *);
/* for the specified remote feature, if the feature is not present in the
* EventFlag parameter (indicating it was not received in the DCB TLV), then
* check and update the peer data store object for the feature if it is
* currently marked as being present.
*
* returns true if the feature is not present now
* the peer data store feature object is set to 'not present'
* false otherwise.
*/
static u32 check_feature_not_present(char *device_name, u32 subtype,
u32 EventFlag, u32 feature)
{
pg_attribs peer_pg;
pfc_attribs peer_pfc;
app_attribs peer_app;
llink_attribs peer_llink;
/* if (!DCB_TEST_FLAGS(EventFlag, feature, feature)) { */
if (DCB_TEST_FLAGS(EventFlag, feature, feature))
return false;
switch (feature) {
case DCB_REMOTE_CHANGE_PG:
if ((get_peer_pg(device_name, &peer_pg) == cmd_success)
&& (peer_pg.protocol.TLVPresent == true)) {
peer_pg.protocol.TLVPresent = false;
put_peer_pg(device_name, &peer_pg);
}
break;
case DCB_REMOTE_CHANGE_PFC:
if ((get_peer_pfc(device_name, &peer_pfc) == cmd_success)
&& (peer_pfc.protocol.TLVPresent == true)) {
peer_pfc.protocol.TLVPresent = false;
put_peer_pfc(device_name, &peer_pfc);
}
break;
case DCB_REMOTE_CHANGE_LLINK:
if ((get_peer_llink(device_name, subtype, &peer_llink) ==
cmd_success) && (peer_llink.protocol.TLVPresent ==
true)) {
peer_llink.protocol.TLVPresent = false;
put_peer_llink(device_name, subtype, &peer_llink);
}
break;
default:
if (feature & DCB_REMOTE_CHANGE_APPTLV(subtype)) {
if ((get_peer_app(device_name, subtype, &peer_app) ==
cmd_success) &&
(peer_app.protocol.TLVPresent == true)) {
peer_app.protocol.TLVPresent = false;
peer_app.Length = 0;
put_peer_app(device_name, subtype, &peer_app);
}
}
break;
}
return true;
}
struct unpacked_tlv *bld_dcbx1_tlv(struct dcbx_tlvs *dcbx)
{
struct unpacked_tlv *tlv = create_tlv();
struct packed_tlv *ptlv = NULL;
u8 oui[DCB_OUI_LEN] = INIT_DCB_OUI;
u8 subtype = DCBX_SUBTYPE1;
u32 offset = 0;
if (!tlv)
return NULL;
tlv->type = ORG_SPECIFIC_TLV;
tlv->length = DCB_OUI_LEN + OUI_SUBTYPE_LEN;
if (dcbx->control) {
tlv->length = tlv->length + dcbx->control->length;
if (dcbx->control->length) tlv->length+=2;
}
if (dcbx->pg1) {
tlv->length = tlv->length + dcbx->pg1->length;
if (dcbx->pg1->length) tlv->length+=2;
}
if (dcbx->pfc1) {
tlv->length = tlv->length + dcbx->pfc1->length;
if (dcbx->pfc1->length) tlv->length+=2;
}
if (dcbx->app1) {
tlv->length = tlv->length + dcbx->app1->length;
tlv->length+=2;
}
if (dcbx->llink) {
tlv->length = tlv->length + dcbx->llink->length;
if (dcbx->llink->length) tlv->length+=2;
}
tlv->info = (u8 *)malloc(tlv->length);
if (tlv->info == NULL)
goto error;
memset(tlv->info,0, tlv->length);
if ((DCB_OUI_LEN + OUI_SUBTYPE_LEN) > tlv->length)
goto error;
memcpy(tlv->info, &oui, DCB_OUI_LEN);
offset += DCB_OUI_LEN;
memcpy(&tlv->info[offset], &subtype, OUI_SUBTYPE_LEN);
offset += OUI_SUBTYPE_LEN;
if (tlv_ok(dcbx->control)) {
ptlv = pack_tlv(dcbx->control);
if (!ptlv || ((ptlv->size+offset) > tlv->length))
goto error;
memcpy(&tlv->info[offset], ptlv->tlv, ptlv->size);
offset += ptlv->size;
free_pkd_tlv(ptlv);
ptlv = NULL;
}
if (tlv_ok(dcbx->pg1)) {
ptlv = pack_tlv(dcbx->pg1);
if (!ptlv || ((ptlv->size+offset) > tlv->length))
goto error;
memcpy(&tlv->info[offset], ptlv->tlv, ptlv->size);
offset += ptlv->size;
free_pkd_tlv(ptlv);
ptlv = NULL;
}
if (tlv_ok(dcbx->pfc1)) {
ptlv = pack_tlv(dcbx->pfc1);
if (!ptlv || ((ptlv->size+offset) > tlv->length))
goto error;
memcpy(&tlv->info[offset], ptlv->tlv, ptlv->size);
offset += ptlv->size;
free_pkd_tlv(ptlv);
ptlv = NULL;
}
if (tlv_ok(dcbx->app1)) {
ptlv = pack_tlv(dcbx->app1);
if (!ptlv || ((ptlv->size+offset) > tlv->length))
goto error;
memcpy(&tlv->info[offset], ptlv->tlv, ptlv->size);
offset += ptlv->size;
free_pkd_tlv(ptlv);
ptlv = NULL;
}
if (tlv_ok(dcbx->llink)) {
ptlv = pack_tlv(dcbx->llink);
if (!ptlv || ((ptlv->size+offset) > tlv->length))
goto error;
memcpy(&tlv->info[offset], ptlv->tlv, ptlv->size);
offset += ptlv->size;
free_pkd_tlv(ptlv);
ptlv = NULL;
}
if (offset != tlv->length)
LLDPAD_DBG("assert offset == tlv->length\n");
assert(offset == tlv->length);
return tlv;
error:
if (ptlv)
free_pkd_tlv(ptlv);
if (tlv) {
if (tlv->info)
free(tlv->info);
free(tlv);
}
LLDPAD_DBG("bld_dcbx1_tlv: malloc failure \n");
return NULL;
}
struct unpacked_tlv *bld_dcbx2_tlv(struct dcbx_tlvs *dcbx)
{
struct unpacked_tlv *tlv = create_tlv();
struct packed_tlv *ptlv = NULL;
u8 oui[DCB_OUI_LEN] = INIT_DCB_OUI;
u8 subtype = DCBX_SUBTYPE2;
u32 offset = 0;
if (!tlv)
return NULL;
tlv->type = ORG_SPECIFIC_TLV;
tlv->length = DCB_OUI_LEN + OUI_SUBTYPE_LEN;
if (dcbx->control) {
tlv->length = tlv->length + dcbx->control->length;
if (dcbx->control->length) tlv->length+=2;
}
if (dcbx->pg2) {
tlv->length = tlv->length + dcbx->pg2->length;
if (dcbx->pg2->length) tlv->length+=2;
}
if (dcbx->pfc2) {
tlv->length = tlv->length + dcbx->pfc2->length;
if (dcbx->pfc2->length) tlv->length+=2;
}
if (dcbx->app2) {
tlv->length = tlv->length + dcbx->app2->length;
tlv->length+=2;
}
tlv->info = (u8 *)malloc(tlv->length);
if (tlv->info == NULL)
goto error;
memset(tlv->info,0, tlv->length);
if ((DCB_OUI_LEN + OUI_SUBTYPE_LEN) > tlv->length)
goto error;
memcpy(tlv->info, &oui, DCB_OUI_LEN);
offset += DCB_OUI_LEN;
memcpy(&tlv->info[offset], &subtype, OUI_SUBTYPE_LEN);
offset += OUI_SUBTYPE_LEN;
if (tlv_ok(dcbx->control)) {
ptlv = pack_tlv(dcbx->control);
if (!ptlv || ((ptlv->size+offset) > tlv->length))
goto error;
memcpy(&tlv->info[offset], ptlv->tlv, ptlv->size);
offset += ptlv->size;
free_pkd_tlv(ptlv);
ptlv = NULL;
}
if (tlv_ok(dcbx->pg2)) {
ptlv = pack_tlv(dcbx->pg2);
if (!ptlv || ((ptlv->size+offset) > tlv->length))
goto error;
memcpy(&tlv->info[offset], ptlv->tlv, ptlv->size);
offset += ptlv->size;
free_pkd_tlv(ptlv);
ptlv = NULL;
}
if (tlv_ok(dcbx->pfc2)) {
ptlv = pack_tlv(dcbx->pfc2);
if (!ptlv || ((ptlv->size+offset) > tlv->length))
goto error;
memcpy(&tlv->info[offset], ptlv->tlv, ptlv->size);
offset += ptlv->size;
free_pkd_tlv(ptlv);
ptlv = NULL;
}
if (tlv_ok(dcbx->app2)) {
ptlv = pack_tlv(dcbx->app2);
if (!ptlv || ((ptlv->size+offset) > tlv->length))
goto error;
memcpy(&tlv->info[offset], ptlv->tlv, ptlv->size);
offset += ptlv->size;
free_pkd_tlv(ptlv);
ptlv = NULL;
}
if (offset != tlv->length)
LLDPAD_DBG("assert offset == tlv->length\n");
assert(offset == tlv->length);
return tlv;
error:
if (ptlv)
free_pkd_tlv(ptlv);
if (tlv) {
if (tlv->info)
free(tlv->info);
free(tlv);
}
LLDPAD_DBG("bld_dcbx2_tlv: malloc failure \n");
return NULL;
}
struct unpacked_tlv *bld_dcbx_ctrl_tlv(struct dcbx_tlvs *dcbx)
{
struct unpacked_tlv *tlv = create_tlv();
control_protocol_attribs ctrl_cfg;
int i;
u8 oper_version;
u8 max_version;
u32 seqno;
u32 ackno;
if (!tlv)
return NULL;
get_control(dcbx->ifname, &ctrl_cfg);
oper_version = (u8)ctrl_cfg.Oper_version;
max_version = (u8)ctrl_cfg.Max_version;
seqno = htonl(ctrl_cfg.SeqNo);
ackno = htonl(ctrl_cfg.AckNo);
tlv->type = DCB_CONTROL_TLV;
tlv->length = DCBX_CTRL_LEN;
tlv->info = (u8 *)malloc(tlv->length);
if (tlv->info) {
memset(tlv->info,0, tlv->length);
i = 0;
memcpy(tlv->info, &oper_version, sizeof(oper_version));
i += sizeof(oper_version);
memcpy(tlv->info + i, &max_version, sizeof(max_version));
i += sizeof(max_version);
memcpy(tlv->info + i, &seqno, sizeof(seqno));
i += sizeof(seqno);
memcpy(tlv->info + i, &ackno ,sizeof(ackno));
i = 0;
} else {
LLDPAD_DBG("bld_dcbx_ctrl_tlv: Failed to malloc info\n");
free(tlv);
return NULL;
}
return tlv;
}
struct unpacked_tlv *bld_dcbx1_pg_tlv(struct dcbx_tlvs *dcbx, bool *success)
{
struct dcbx1_pg_info *pg_info;
struct unpacked_tlv *tlv = create_tlv();
pg_attribs pg_cfg;
int result, i;
u8 tmpbyte = 0;
*success = false;
if (!tlv) {
return NULL;
}
result = get_pg(dcbx->ifname, &pg_cfg);
if (result == cmd_success) {
mark_pg_sent(dcbx->ifname);
if (!(pg_cfg.protocol.Advertise)) {
free(tlv);
*success = true;
return NULL;
}
} else {
free(tlv);
return NULL;
}
pg_info = (struct dcbx1_pg_info *)malloc(DCBX1_PG_LEN);
if (pg_info) {
memset(pg_info, 0, DCBX1_PG_LEN);
pg_info->hdr.oper_version = (u8)pg_cfg.protocol.Oper_version;
pg_info->hdr.max_version = (u8)pg_cfg.protocol.Max_version;
/* ewe Enable Willing Error */
if (pg_cfg.protocol.Enable == true)
pg_info->hdr.ewe |= BIT7;
if (pg_cfg.protocol.Willing == true)
pg_info->hdr.ewe |= BIT6;
if (pg_cfg.protocol.Error == true)
pg_info->hdr.ewe |= BIT5;
pg_info->hdr.sub_type = DEFAULT_SUBTYPE;
for (i = 0; i < MAX_BANDWIDTH_GROUPS; i++) {
pg_info->data.pg_percent[i] = pg_cfg.tx.pg_percent[i];
}
for (i = 0; i < MAX_USER_PRIORITIES; i++) {
tmpbyte = 0;
tmpbyte = pg_cfg.tx.up[i].bwgid;
tmpbyte = tmpbyte << 5;
u8 tmpprio = 0;
tmpprio = (u8)pg_cfg.tx.up[i].strict_priority;
tmpprio = tmpprio << 3;
tmpbyte |= tmpprio;
pg_info->data.up_cfg[i].byte1 = tmpbyte;
pg_info->data.up_cfg[i].byte2 =
pg_cfg.tx.up[i].percent_of_pg_cap;
}
tlv->length = DCBX1_PG_LEN;
} else {
LLDPAD_DBG("bld_dcbx1_pg_tlv: Failed to malloc pg_info\n");
free(tlv);
return NULL;
}
tlv->type = DCB_PRIORITY_GROUPS_TLV;
tlv->info = (u8 *)pg_info;
*success = true;
return tlv;
}
struct unpacked_tlv *bld_dcbx2_pg_tlv(struct dcbx_tlvs *dcbx, bool *success)
{
struct dcbx2_pg_info *pg_info;
struct unpacked_tlv *tlv = create_tlv();
pg_attribs pg_cfg;
int result, i;
u8 tmpbyte = 0;
int j, k;
*success = false;
if (!tlv) {
return NULL;
}
result = get_pg(dcbx->ifname, &pg_cfg);
if (result == cmd_success) {
mark_pg_sent(dcbx->ifname);
if (!(pg_cfg.protocol.Advertise)) {
free(tlv);
*success = true;
return NULL;
}
} else {
free(tlv);
return NULL;
}
pg_info = (struct dcbx2_pg_info *)malloc(DCBX2_PG_LEN);
if (pg_info) {
memset(pg_info, 0, DCBX2_PG_LEN);
pg_info->hdr.oper_version = (u8)pg_cfg.protocol.Oper_version;
pg_info->hdr.max_version = (u8)pg_cfg.protocol.Max_version;
/* ewe Enable Willing Error */
if (pg_cfg.protocol.Enable == true)
pg_info->hdr.ewe |= BIT7;
if (pg_cfg.protocol.Willing == true)
pg_info->hdr.ewe |= BIT6;
if (pg_cfg.protocol.Error == true)
pg_info->hdr.ewe |= BIT5;
pg_info->hdr.sub_type = DEFAULT_SUBTYPE;
for (j=0,k=0 ; k < MAX_BANDWIDTH_GROUPS; j++, k=k+2) {
tmpbyte = 0;
if (pg_cfg.tx.up[k].strict_priority == DCB_LINK)
tmpbyte = 0xf;
else
tmpbyte = pg_cfg.tx.up[k].pgid & 0xf;
tmpbyte <<= 4;
if (pg_cfg.tx.up[k+1].strict_priority == DCB_LINK)
tmpbyte |= 0xf;
else
tmpbyte |= (pg_cfg.tx.up[k+1].pgid & 0xf);
pg_info->data.pg_ids[j] = tmpbyte;
}
for (i = 0; i < MAX_BANDWIDTH_GROUPS; i++) {
pg_info->data.pg_percent[i] = pg_cfg.tx.pg_percent[i];
}
pg_info->data.num_tcs = pg_cfg.num_tcs;
tlv->length = DCBX2_PG_LEN;
} else {
LLDPAD_DBG("bld_dcbx2_pg_tlv: Failed to malloc pg_info\n");
free(tlv);
return NULL;
}
tlv->type = DCB_PRIORITY_GROUPS_TLV2;
tlv->info = (u8 *)pg_info;
*success = true;
return tlv;
}
struct unpacked_tlv *bld_dcbx1_pfc_tlv(struct dcbx_tlvs *dcbx, bool *success)
{
struct dcbx1_pfc_info *pfc_info;
struct unpacked_tlv *tlv = create_tlv();
pfc_attribs pfc_cfg;
int result,i;
*success = false;
if (!tlv)
return NULL;
result = get_pfc(dcbx->ifname, &pfc_cfg);
if (result == cmd_success) {
mark_pfc_sent(dcbx->ifname);
if (!(pfc_cfg.protocol.Advertise)) {
free(tlv);
*success = true;
return NULL;
}
} else {
free(tlv);
return NULL;
}
pfc_info = (struct dcbx1_pfc_info *)malloc(DCBX1_PFC_LEN);
if (pfc_info) {
memset(pfc_info, 0, DCBX1_PFC_LEN);
pfc_info->hdr.oper_version = (u8)pfc_cfg.protocol.Oper_version;
pfc_info->hdr.max_version = (u8)pfc_cfg.protocol.Max_version;
/* ewe Enable Willing Error */
if(pfc_cfg.protocol.Enable == true)
pfc_info->hdr.ewe |= BIT7;
if(pfc_cfg.protocol.Willing == true)
pfc_info->hdr.ewe |= BIT6;
if(pfc_cfg.protocol.Error == true)
pfc_info->hdr.ewe |= BIT5;
pfc_info->hdr.sub_type = DEFAULT_SUBTYPE;
u8 temp = 0;
for(i = 0; i < MAX_USER_PRIORITIES; i++) {
temp = (u8)(pfc_cfg.admin[i] << i);
pfc_info->data.admin_map |= temp;
}
tlv->length = DCBX1_PFC_LEN;
} else {
LLDPAD_DBG("bld_dcbx1_pfc_tlv: Failed to malloc pfc_info\n");
free(tlv);
return NULL;
}
tlv->type = DCB_PRIORITY_FLOW_CONTROL_TLV;
tlv->info = (u8 *)pfc_info;
*success = true;
return tlv;
}
struct unpacked_tlv *bld_dcbx2_pfc_tlv(struct dcbx_tlvs *dcbx, bool *success)
{
struct dcbx2_pfc_info *pfc_info;
struct unpacked_tlv *tlv = create_tlv();
pfc_attribs pfc_cfg;
int result,i;
*success = false;
if (!tlv)
return NULL;
result = get_pfc(dcbx->ifname, &pfc_cfg);
if (result == cmd_success) {
mark_pfc_sent(dcbx->ifname);
if (!(pfc_cfg.protocol.Advertise)) {
free(tlv);
*success = true;
return NULL;
}
} else {
free(tlv);
return NULL;
}
pfc_info = (struct dcbx2_pfc_info *)malloc(DCBX2_PFC_LEN);
if (pfc_info) {
memset(pfc_info, 0, DCBX2_PFC_LEN);
pfc_info->hdr.oper_version = (u8)pfc_cfg.protocol.Oper_version;
pfc_info->hdr.max_version = (u8)pfc_cfg.protocol.Max_version;
/* ewe Enable Willing Error */
if(pfc_cfg.protocol.Enable == true)
pfc_info->hdr.ewe |= BIT7;
if(pfc_cfg.protocol.Willing == true)
pfc_info->hdr.ewe |= BIT6;
if(pfc_cfg.protocol.Error == true)
pfc_info->hdr.ewe |= BIT5;
pfc_info->hdr.sub_type = DEFAULT_SUBTYPE;
u8 temp = 0;
for(i = 0; i < MAX_USER_PRIORITIES; i++) {
temp = (u8)(pfc_cfg.admin[i] << i);
pfc_info->data.admin_map |= temp;
}
pfc_info->data.num_tcs = pfc_cfg.num_tcs;
tlv->length = DCBX2_PFC_LEN;
} else {
LLDPAD_DBG("bld_dcbx2_pfc_tlv: Failed to malloc pfc_info\n");
free(tlv);
return NULL;
}
tlv->type = DCB_PRIORITY_FLOW_CONTROL_TLV2;
tlv->info = (u8 *)pfc_info;
*success = true;
return tlv;
}
struct unpacked_tlv *bld_dcbx1_app_tlv(struct dcbx_tlvs *dcbx,
u32 sub_type,
bool *success)
{
struct dcbx1_app_info *app_info;
struct unpacked_tlv *tlv = create_tlv();
app_attribs app_cfg;
int result;
u32 i,len;
*success = false;
if (!tlv)
return NULL;
memset(&app_cfg, 0, sizeof(app_cfg));
result = get_app(dcbx->ifname, sub_type, &app_cfg);
if (result == cmd_success) {
mark_app_sent(dcbx->ifname);
if (!(app_cfg.protocol.Advertise)) {
free(tlv);
*success = true;
return NULL;
}
} else {
free(tlv);
return NULL;
}
len = sizeof(struct dcbx_tlv_header) + app_cfg.Length;
app_info = (struct dcbx1_app_info *)malloc(len);
if (app_info) {
memset(app_info,0,sizeof(struct dcbx1_app_info));
app_info->hdr.oper_version = (u8)app_cfg.protocol.Oper_version;
app_info->hdr.max_version = (u8)app_cfg.protocol.Max_version;
/* ewe Enable Willing Error */
if(app_cfg.protocol.Enable == true)
app_info->hdr.ewe |= BIT7;
if(app_cfg.protocol.Willing == true)
app_info->hdr.ewe |= BIT6;
if(app_cfg.protocol.Error == true)
app_info->hdr.ewe |= BIT5;
app_info->hdr.sub_type = (u8)sub_type;
for (i = 0; i < app_cfg.Length; i++)
app_info->data[i] = app_cfg.AppData[i];
tlv->length = (u16)len;
} else {
LLDPAD_DBG("bld_dcbx1_app_tlv: Failed to malloc app_info\n");
free(tlv);
return NULL;
}
tlv->type = DCB_APPLICATION_TLV;
tlv->info = (u8 *)app_info;
*success = true;
return tlv;
}
void set_proto(struct dcbx2_app_cfg *app_cfg, int subtype)
{
u8 oui[DCB_OUI_LEN] = INIT_DCB_OUI;
switch (subtype) {
case APP_FCOE_STYPE:
app_cfg->prot_id = PROTO_ID_FCOE;
app_cfg->byte1 = (oui[0] & PROTO_ID_OUI_MASK)
| (PROTO_ID_L2_ETH_TYPE & PROTO_ID_SF_TYPE);
break;
case APP_ISCSI_STYPE:
app_cfg->prot_id = PROTO_ID_ISCSI;
app_cfg->byte1 = (oui[0] & PROTO_ID_OUI_MASK)
| (PROTO_ID_SOCK_NUM & PROTO_ID_SF_TYPE);
break;
case APP_FIP_STYPE:
app_cfg->prot_id = PROTO_ID_FIP;
app_cfg->byte1 = (oui[0] & PROTO_ID_OUI_MASK)
| (PROTO_ID_L2_ETH_TYPE & PROTO_ID_SF_TYPE);
break;
}
app_cfg->low_oui = (oui[2]<<8) | oui[1];
}
struct unpacked_tlv *bld_dcbx2_app_tlv(struct dcbx_tlvs *dcbx,
bool *success)
{
struct dcbx2_app_info *app_info;
struct unpacked_tlv *tlv = create_tlv();
app_attribs app_cfg;
int i, offset, result;
bool advertise = false;
*success = false;
if (!tlv)
return NULL;
/* Verify there is something to advertise before building APP data */
for (i = 0; i < DCB_MAX_APPTLV; i++) {
memset(&app_cfg, 0, sizeof(app_cfg));
result = get_app(dcbx->ifname, i, &app_cfg);
if (result != cmd_success) {
continue;
} else if ((app_cfg.protocol.Advertise)) {
advertise = true;
break;
}
}
if (!advertise) {
free(tlv);
*success = true;
return NULL;
}
/* At least one APP entry exists so build the header and entries hdr
* values are taken from the first APP entry found. The APP order is
* set in dcb_types.h
*/
app_info = (struct dcbx2_app_info *)malloc(DCBX2_APP_LEN);
tlv->length = DCBX2_APP_LEN;
if (app_info) {
struct dcbx2_app_cfg *app_data;
memset(app_info, 0, DCBX2_APP_LEN);
app_info->hdr.oper_version = (u8)app_cfg.protocol.Oper_version;
app_info->hdr.max_version = (u8)app_cfg.protocol.Max_version;
/* ewe Enable Willing Error */
if(app_cfg.protocol.Enable == true)
app_info->hdr.ewe |= BIT7;
if(app_cfg.protocol.Willing == true)
app_info->hdr.ewe |= BIT6;
if(app_cfg.protocol.Error == true)
app_info->hdr.ewe |= BIT5;
app_info->hdr.sub_type = 0;
for (offset = 0; i < DCB_MAX_APPTLV; i++) {
result = get_app(dcbx->ifname, i, &app_cfg);
if (result == cmd_success) {
mark_app_sent(dcbx->ifname);
if (!(app_cfg.protocol.Advertise))
continue;
}
tlv->length += DCBX2_APP_SIZE;
app_info = realloc(app_info, tlv->length);
if (!app_info) {
free(app_info);
free(tlv);
return NULL;
}
app_data = &(app_info->data[offset++]);
set_proto(app_data, i);
memcpy (&app_data->up_map, &(app_cfg.AppData[0]),
APP_STYPE_LEN);
}
} else {
LLDPAD_DBG("bld_dcbx2_app_tlv: Failed to malloc app_info\n");
free(tlv);
return NULL;
}
tlv->type = DCB_APPLICATION_TLV2;
tlv->info = (u8 *)app_info;
*success = true;
return tlv;
}
struct unpacked_tlv *bld_dcbx_llink_tlv(struct dcbx_tlvs *dcbx, u32 sub_type,
bool *success)
{
struct dcbx_llink_info *llink_info;
struct unpacked_tlv *tlv = create_tlv();
llink_attribs llk_cfg;
llink_cfg *cfg;
struct dcbx_llink_cfg *pkt;
int result;
*success = false;
if (!tlv) {
return NULL;
}
result = get_llink(dcbx->ifname, sub_type, &llk_cfg);
if (result == cmd_success) {
mark_llink_sent(dcbx->ifname, sub_type);
if (!(llk_cfg.protocol.Advertise)) {
free(tlv);
*success = true;
return NULL;
}
} else {
free(tlv);
return NULL;
}
llink_info = (struct dcbx_llink_info *)malloc(DCBX_LLINK_LEN);
if (llink_info) {
memset(llink_info, 0, DCBX_LLINK_LEN);
llink_info->hdr.oper_version =
(u8)llk_cfg.protocol.Oper_version;
llink_info->hdr.max_version = (u8)llk_cfg.protocol.Max_version;
/* ewe Enable Willing Error */
if (llk_cfg.protocol.Enable == true)
llink_info->hdr.ewe |= BIT7;
if (llk_cfg.protocol.Willing == true)
llink_info->hdr.ewe |= BIT6;
if (llk_cfg.protocol.Error == true)
llink_info->hdr.ewe |= BIT5;
llink_info->hdr.sub_type = (u8)sub_type;
cfg = &(llk_cfg.llink);
pkt = &(llink_info->data);
if(cfg->llink_status == true)
pkt->byte1 |= BIT7;
tlv->length = DCBX_LLINK_LEN;
} else {
LLDPAD_DBG("bld_dcbx_llink_tlv: Failed to malloc llink_info\n");
free(tlv);
return NULL;
}
tlv->type = DCB_LLINK_TLV;
tlv->info = (u8 *)llink_info;
*success = true;
return tlv;
}
bool unpack_dcbx1_tlvs(struct port *port, struct lldp_agent *agent,
struct unpacked_tlv *tlv)
{
/* unpack the tlvs and store in manifest */
u8 *offset = NULL; /* iterator */
u16 current = 0, tl = 0;
u16 end = 0; /* End of data blob */
struct unpacked_tlv *dcbtlv;
struct dcbx_tlvs *tlvs;
tlvs = dcbx_data(port->ifname);
if (agent == NULL)
return false;
/* store highest dcbx subtype received */
if (agent->rx.dcbx_st < tlv->info[DCB_OUI_LEN]) {
agent->rx.dcbx_st = tlv->info[DCB_OUI_LEN];
}
/* OUI + subtype sizes equal the start of data blob */
offset = (u8 *)&tlv->info[OUI_SUBTYPE_LEN + DCB_OUI_LEN];
end = tlv->length - (OUI_SUBTYPE_LEN + DCB_OUI_LEN);
/* Process */
do {
dcbtlv = create_tlv();
if (!dcbtlv) {
LLDPAD_DBG("ERROR: Failed to malloc space for incoming "
"DCB TLV. \n");
return false;
}
memcpy(&tl, offset, sizeof(tl));
offset += sizeof(tl);
dcbtlv->length = ntohs(tl) & 0x01FF;
if (dcbtlv->length==0) {
LLDPAD_DBG("ERROR: dcbtlv->length==0 \n");
free_unpkd_tlv(dcbtlv);
return false;
}
dcbtlv->type = (u8)(ntohs(tl) >> 9);
dcbtlv->info = (u8 *)malloc(dcbtlv->length);
if (dcbtlv->info) {
memset(dcbtlv->info, 0, dcbtlv->length);
memcpy(dcbtlv->info, offset, dcbtlv->length);
} else {
LLDPAD_DBG("ERROR: Failed to malloc space for incoming "
"TLV info \n");
free_unpkd_tlv(dcbtlv);
return false;
}
current += dcbtlv->length + sizeof(tl);
offset += dcbtlv->length;
switch(dcbtlv->type) {
case DCB_CONTROL_TLV:
if (!(tlvs->dcbdu & RCVD_DCBX1_TLV_CTRL)) {
tlvs->dcbdu |= RCVD_DCBX1_TLV_CTRL;
tlvs->manifest->dcbx_ctrl = dcbtlv;
} else {
LLDPAD_DBG("** ERROR: DUP Ctrl TLV1 \n");
agent->rx.dupTlvs |= DUP_DCBX_TLV_CTRL;
free_unpkd_tlv(dcbtlv);
}
break;
case DCB_PRIORITY_GROUPS_TLV:
/* store if subtype 2 is not present */
if (agent->rx.dcbx_st == DCBX_SUBTYPE1) {
if (tlvs->manifest->dcbx_pg == NULL) {
tlvs->dcbdu |= RCVD_DCBX_TLV_PG;
tlvs->manifest->dcbx_pg = dcbtlv;
} else {
LLDPAD_DBG("** ERROR: DUP PG TLV1 \n");
agent->rx.dupTlvs |= DUP_DCBX_TLV_PG;
free_unpkd_tlv(dcbtlv);
}
} else {
free_unpkd_tlv(dcbtlv);
}
break;
case DCB_PRIORITY_FLOW_CONTROL_TLV:
/* store if subtype 2 is not present */
if (agent->rx.dcbx_st == DCBX_SUBTYPE1) {
if (tlvs->manifest->dcbx_pfc == NULL) {
tlvs->dcbdu |= RCVD_DCBX_TLV_PFC;
tlvs->manifest->dcbx_pfc = dcbtlv;
} else {
LLDPAD_DBG("** ERROR: DUP PFC TLV1 \n");
agent->rx.dupTlvs |= DUP_DCBX_TLV_PFC;
free_unpkd_tlv(dcbtlv);
}
} else {
free_unpkd_tlv(dcbtlv);
}
break;
case DCB_APPLICATION_TLV:
/* store if subtype 2 is not present */
if ((agent->rx.dcbx_st == DCBX_SUBTYPE1) &&
(dcbtlv->info[DCBX_HDR_SUB_TYPE_OFFSET]
== APP_FCOE_STYPE)) {
if (tlvs->manifest->dcbx_app == NULL) {
tlvs->dcbdu |= RCVD_DCBX_TLV_APP;
tlvs->manifest->dcbx_app = dcbtlv;
} else {
LLDPAD_DBG("** ERROR: DUP APP TLV1 \n");
agent->rx.dupTlvs |= DUP_DCBX_TLV_APP;
free_unpkd_tlv(dcbtlv);
}
} else {
free_unpkd_tlv(dcbtlv);
}
break;
case DCB_LLINK_TLV:
if (dcbtlv->info[DCBX_HDR_SUB_TYPE_OFFSET]
== LLINK_FCOE_STYPE) {
if (tlvs->manifest->dcbx_llink == NULL) {
tlvs->dcbdu |= RCVD_DCBX_TLV_LLINK;
tlvs->manifest->dcbx_llink = dcbtlv;
} else {
LLDPAD_DBG("** ERROR: DUP LLINK TLV1 \n");
agent->rx.dupTlvs |= DUP_DCBX_TLV_LLINK;
free_unpkd_tlv(dcbtlv);
}
} else {
free_unpkd_tlv(dcbtlv);
}
break;
default:
free_unpkd_tlv(dcbtlv);
break;
}
dcbtlv = NULL;
} while(current < end);
return true;
}
bool unpack_dcbx2_tlvs(struct port *port, struct lldp_agent *agent,
struct unpacked_tlv *tlv)
{
/* unpack the tlvs and store in manifest */
u8 *offset = NULL; /* iterator */
u16 current = 0, tl = 0;
u16 end = 0; /* End of data blob */
struct unpacked_tlv *dcbtlv;
struct dcbx_tlvs *tlvs;
int subtype;
tlvs = dcbx_data(port->ifname);
if (agent == NULL)
return false;
/* store highest dcbx subtype received */
if (agent->rx.dcbx_st < tlv->info[DCB_OUI_LEN]) {
agent->rx.dcbx_st = tlv->info[DCB_OUI_LEN];
}
/* OUI + subtype sizes equal the start of data blob */
offset = (u8 *)&tlv->info[OUI_SUBTYPE_LEN + DCB_OUI_LEN];
end = tlv->length - (OUI_SUBTYPE_LEN + DCB_OUI_LEN);
/* Process */
do {
dcbtlv = create_tlv();
if (!dcbtlv) {
LLDPAD_DBG("ERROR: Failed to malloc space for incoming "
"DCB TLV. \n");
return false;
}
memcpy(&tl, offset, sizeof(tl));
offset += sizeof(tl);
dcbtlv->length = ntohs(tl) & 0x01FF;
if (dcbtlv->length==0) {
LLDPAD_DBG("ERROR: dcbtlv->length==0 \n");
free_unpkd_tlv(dcbtlv);
return false;
}
dcbtlv->type = (u8)(ntohs(tl) >> 9);
dcbtlv->info = (u8 *)malloc(dcbtlv->length);
if (dcbtlv->info) {
memset(dcbtlv->info, 0, dcbtlv->length);