[sonic-swss] ARMHF warning fixes (sonic-net#1325)

Compiler Warnings : cast increases required alignment of target type [-Wcast-align]
Fix: Use reintrepret cast to cast lower size pointer to bigger size
pointer types

Signed-off-by: Antony Rheneus <arheneus@marvell.com>

mclagsyncd/mclaglink.cpp

@@ -197,14 +197,14 @@ void MclagLink::setPortIsolate(char *msg)
  cur = msg;
 
  /*get isolate src port infor*/
- op_hdr = (mclag_sub_option_hdr_t *)cur;
+ op_hdr = reinterpret_cast<mclag_sub_option_hdr_t *>(static_cast<void *>(cur));
  cur = cur + MCLAG_SUB_OPTION_HDR_LEN;
  isolate_src_port.insert(0, (const char*)cur, op_hdr->op_len);
 
  cur = cur + op_hdr->op_len;
 
  /*get isolate dst ports infor*/
- op_hdr = (mclag_sub_option_hdr_t *)cur;
+ op_hdr = reinterpret_cast<mclag_sub_option_hdr_t *>(static_cast<void *>(cur));
  cur = cur + MCLAG_SUB_OPTION_HDR_LEN;
  isolate_dst_port.insert(0, (const char*)cur, op_hdr->op_len);
 
@@ -265,7 +265,7 @@ void MclagLink::setPortMacLearnMode(char *msg)
  cur = msg;
 
  /*get port learning mode info*/
- op_hdr = (mclag_sub_option_hdr_t *)cur;
+ op_hdr = reinterpret_cast<mclag_sub_option_hdr_t *>(static_cast<void *>(cur));
  if (op_hdr->op_type == MCLAG_SUB_OPTION_TYPE_MAC_LEARN_ENABLE)
  {
  learn_mode = "hardware";
@@ -319,7 +319,7 @@ void MclagLink::setFdbFlushByPort(char *msg)
 
  cur = msg;
  /*get port infor*/
- op_hdr = (mclag_sub_option_hdr_t *)cur;
+ op_hdr = reinterpret_cast<mclag_sub_option_hdr_t *>(static_cast<void *>(cur));
  cur = cur + MCLAG_SUB_OPTION_HDR_LEN;
  port.insert(0, (const char*)cur, op_hdr->op_len);
 
@@ -340,14 +340,14 @@ void MclagLink::setIntfMac(char *msg)
  cur = msg;
 
  /*get intf key name*/
- op_hdr = (mclag_sub_option_hdr_t *)cur;
+ op_hdr = reinterpret_cast<mclag_sub_option_hdr_t *>(static_cast<void *>(cur));
  cur = cur + MCLAG_SUB_OPTION_HDR_LEN;
  intf_key.insert(0, (const char*)cur, op_hdr->op_len);
 
  cur = cur + op_hdr->op_len;
 
  /*get mac*/
- op_hdr = (mclag_sub_option_hdr_t *)cur;
+ op_hdr = reinterpret_cast<mclag_sub_option_hdr_t *>(static_cast<void *>(cur));
  cur = cur + MCLAG_SUB_OPTION_HDR_LEN;
  mac_value.insert(0, (const char*)cur, op_hdr->op_len);
 
@@ -379,7 +379,7 @@ void MclagLink::setFdbEntry(char *msg, int msg_len)
  {
  memset(key, 0, 64);
 
- fdb_info = (struct mclag_fdb_info *)(cur + index * sizeof(struct mclag_fdb_info));
+ fdb_info = reinterpret_cast<struct mclag_fdb_info *>(static_cast<void *>(cur + index * sizeof(struct mclag_fdb_info)));
 
  fdb.mac = fdb_info->mac;
  fdb.port_name = fdb_info->port_name;
@@ -502,7 +502,7 @@ ssize_t MclagLink::getFdbChange(char *msg_buf)
  {
  if (MCLAG_MAX_SEND_MSG_LEN - infor_len < sizeof(struct mclag_fdb_info))
  {
- msg_head = (mclag_msg_hdr_t *)infor_start;
+ msg_head = reinterpret_cast<mclag_msg_hdr_t *>(static_cast<void *>(infor_start));
  msg_head->version = 1;
  msg_head->msg_len = (unsigned short)infor_len;
  msg_head->msg_type = MCLAG_SYNCD_MSG_TYPE_FDB_OPERATION;
@@ -535,7 +535,7 @@ ssize_t MclagLink::getFdbChange(char *msg_buf)
  {
  if (MCLAG_MAX_SEND_MSG_LEN - infor_len < sizeof(struct mclag_fdb_info))
  {
- msg_head = (mclag_msg_hdr_t *)infor_start;
+ msg_head = reinterpret_cast<mclag_msg_hdr_t *>(static_cast<void *>(infor_start));
  msg_head->version = 1;
  msg_head->msg_len = (unsigned short)infor_len;
  msg_head->msg_type = MCLAG_SYNCD_MSG_TYPE_FDB_OPERATION;
@@ -567,7 +567,7 @@ ssize_t MclagLink::getFdbChange(char *msg_buf)
  if (infor_len <= sizeof(mclag_msg_hdr_t)) /*no fdb entry need notifying iccpd*/
  return 1;
 
- msg_head = (mclag_msg_hdr_t *)infor_start;
+ msg_head = reinterpret_cast<mclag_msg_hdr_t *>(static_cast<void *>(infor_start));
  msg_head->version = 1;
  msg_head->msg_len = (unsigned short)infor_len;
  msg_head->msg_type = MCLAG_SYNCD_MSG_TYPE_FDB_OPERATION;
@@ -676,7 +676,7 @@ uint64_t MclagLink::readData()
 
  while (true)
  {
- hdr = (mclag_msg_hdr_t *)(m_messageBuffer + start);
+ hdr = reinterpret_cast<mclag_msg_hdr_t *>(static_cast<void *>(m_messageBuffer + start));
  left = m_pos - start;
  if (left < MCLAG_MSG_HDR_LEN)
  break;