gdb/ospf.txt

# GDB macros for use with Quagga.
#
# Macros in this file are specific to ospfd/. Definitions here depend on the
# lib.txt macros file, which must also be loaed.
#
# The macro file can be loaded with 'source <filename>'. They can then be   
# called by the user. Macros that explore more complicated structs generally
# take pointer arguments. 

define dump_ospf_lsa_flags
  set $flags = $arg0
  
  printf "%u: ", $flags
  
  if $flags & 0x1
    echo Self,
  end
  if $flags & 0x2
    echo Self-checked,
  end
  if $flags & 0x4
    echo Recvd,
  end
  if $flags & 0x8
    echo Apprvd,
  end
  if $flags & 0x10
    echo Discard,
  end
  if $flags & 0x20
    echo Local-Xlt,
  end
  if $flags & 0x40
    echo Premature-Aged,
  end
  if $flags & 0x40
    echo In-Maxage,
  end
  echo \n
end

define dump_ospf_lsa_data
  set $lsad = (struct lsa_header *)$arg0
  
  echo ID / AdvRtr:  \t\t
  dump_s_addr &$lsad->id.s_addr
  echo \ : \ 
  dump_s_addr &$lsad->adv_router.s_addr
  echo \n
  
  def_ntohs &$lsad->ls_age
  printf "Type: %2u Age: %4u,", $lsad->type, $_
  
  def_ntohs &$lsad->length
  printf " length: %2u", $_
  
  def_ntohl &$lsad->ls_seqnum
  printf " Seqnum: 0x%08x", $_
  
  def_ntohs &$lsad->checksum
  printf " csum: 0x%04x\n", $_
  
  # return the age
  def_ntohs &$lsad->ls_age
end

define dump_ospf_lsa
  set $lsa = (struct ospf_lsa *)$arg0
  
  #print/x *$lsa
  
  dump_ospf_lsa_data $lsa->data
  
  set $relage = $_ + (relative_time.tv_sec - $lsa->tv_recv.tv_sec)
  printf "Relative age: %4u\n", $relage
  
  dump_ospf_lsa_flags $lsa->flags
  
  echo tv_recv: \ 
  dump_timeval &$lsa->tv_recv
  echo \ tv_orig: \ 
  dump_timeval &$lsa->tv_orig
  echo \n
  
  printf "lock %2u", $lsa->lock
  printf " stat %2d", $lsa->stat
  printf " rtx count: %u", $lsa->retransmit_counter
  printf " rfsh list: %d", $lsa->refresh_list
  printf "\n\n"
end

define walk_ospf_lsdb
  set $node = (struct route_node *)$arg0
  set $top = (struct route_node *)$arg0
  set $visited = 0
  
  while ($node != 0)
    set $prevl = $node
    
    if ($node->info != 0)
      dump_ospf_lsa $node->info
      set $visited = $visited + 1
    end
    
    walk_route_table_next $top $node
    set $node = $_
    
    # we've gotten back to the top, finish
    if ($node == $top)
      set $node = 0
    end
  end
  printf "Visited: %u\n", $visited
end

document walk_ospf_lsdb
Walk through an OSPF LSDB (or subset thereof) and dump all the LSAs
contained there-in.

Argument: A (struct route_node *) pointing to the top of the
LSDB route-table which should be dumped.
end

define ospf_backbone_lsdb_top
  set $type = $arg0
  
  set $ospf = ospf_master->ospf->head->data
  
  output/x ((struct ospf *)$ospf)->backbone->lsdb->type[$type]->db->top
  echo \n
end
document ospf_backbone_lsdb_top
Dump location of the LSDB in the backbone area for the given LSA type

Argument: Integer LSA type
end