| Commit message (Collapse) | Author | Age | Files | Lines |
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The addition of a MIN(X,Y) with a stream_getc in the Y
causes a double read of the stream due to the way that
MIN is defined.
This fix removes a crash in all protocols.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
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* zclient.c: prefix length on router-id and interface address add
messages not sanity checked. fix.
* */*_zebra.c: Prefix length on zebra route read was not checked, and
clients use it to write to storage. An evil zebra could overflow
client structures by sending overly long prefixlen.
Prompted by discussions with:
Donald Sharp <sharpd@cumulusnetworks.com>
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zclient.c depended upon link time inclusion of a
extern struct thread_master *master. This is a violation of the
namespace of the calling daemon. If a library needs the pointer
pass it in and save it for future use.
This code change also makes the zclient code consistent with
the other lib functions that need to schedule work on your behalf
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
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The API messages are used by zebra to exchange the interfaces, addresses,
routes and router-id information with its clients. To distinguish which
VRF the information belongs to, a new field "VRF ID" is added in the
message header. And hence the message version is increased to 3.
* The new field "VRF ID" in the message header:
Length (2 bytes)
Marker (1 byte)
Version (1 byte)
VRF ID (2 bytes, newly added)
Command (2 bytes)
- Client side:
- zclient_create_header() adds the VRF ID in the message header.
- zclient_read() extracts and validates the VRF ID from the header,
and passes the VRF ID to the callback functions registered to
the API messages.
- All relative functions are appended with a new parameter "vrf_id",
including all the callback functions.
- "vrf_id" is also added to "struct zapi_ipv4" and "struct zapi_ipv6".
Clients need to correctly set the VRF ID when using the API
functions zapi_ipv4_route() and zapi_ipv6_route().
- Till now all messages sent from a client have the default VRF ID
"0" in the header.
- The HELLO message is special, which is used as the heart-beat of
a client, and has no relation with VRF. The VRF ID in the HELLO
message header will always be 0 and ignored by zebra.
- Zebra side:
- zserv_create_header() adds the VRF ID in the message header.
- zebra_client_read() extracts and validates the VRF ID from the
header, and passes the VRF ID to the functions which process
the received messages.
- All relative functions are appended with a new parameter "vrf_id".
* Suppress the messages in a VRF which a client does not care:
Some clients may not care about the information in the VRF X, and
zebra should not send the messages in the VRF X to those clients.
Extra flags are used to indicate which VRF is registered by a client,
and a new message ZEBRA_VRF_UNREGISTER is introduced to let a client
can unregister a VRF when it does not need any information in that
VRF.
A client sends any message other than ZEBRA_VRF_UNREGISTER in a VRF
will automatically register to that VRF.
- lib/vrf:
A new utility "VRF bit-map" is provided to manage the flags for
VRFs, one bit per VRF ID.
- Use vrf_bitmap_init()/vrf_bitmap_free() to initialize/free a
bit-map;
- Use vrf_bitmap_set()/vrf_bitmap_unset() to set/unset a flag
in the given bit-map, corresponding to the given VRF ID;
- Use vrf_bitmap_check() to test whether the flag, in the given
bit-map and for the given VRF ID, is set.
- Client side:
- In "struct zclient", the following flags are changed from
"u_char" to "vrf_bitmap_t":
redist[ZEBRA_ROUTE_MAX]
default_information
These flags are extended for each VRF, and controlled by the
clients themselves (or with the help of zclient_redistribute()
and zclient_redistribute_default()).
- Zebra side:
- In "struct zserv", the following flags are changed from
"u_char" to "vrf_bitmap_t":
redist[ZEBRA_ROUTE_MAX]
redist_default
ifinfo
ridinfo
These flags are extended for each VRF, as the VRF registration
flags. They are maintained on receiving a ZEBRA_XXX_ADD or
ZEBRA_XXX_DELETE message.
When sending an interface/address/route/router-id message in
a VRF to a client, if the corresponding VRF registration flag
is not set, this message will not be dropped by zebra.
- A new function zread_vrf_unregister() is introduced to process
the new command ZEBRA_VRF_UNREGISTER. All the VRF registration
flags are cleared for the requested VRF.
Those clients, who support only the default VRF, will never receive
a message in a non-default VRF, thanks to the filter in zebra.
* New callback for the event of successful connection to zebra:
- zclient_start() is splitted, keeping only the code of connecting
to zebra.
- Now zclient_init()=>zclient_connect()=>zclient_start() operations
are purely dealing with the connection to zbera.
- Once zebra is successfully connected, at the end of zclient_start(),
a new callback is used to inform the client about connection.
- Till now, in the callback of connect-to-zebra event, all clients
send messages to zebra to request the router-id/interface/routes
information in the default VRF.
Of corse in future the client can do anything it wants in this
callback. For example, it may send requests for both default VRF
and some non-default VRFs.
Signed-off-by: Feng Lu <lu.feng@6wind.com>
Reviewed-by: Alain Ritoux <alain.ritoux@6wind.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Donald Sharp <sharpd@cumulusnetworks.com>
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As the comments in if.h, it is better to call ifname2ifindex()
instead of if_nametoindex().
And ifname2ifindex() can work for VRF by appending a parameter
while if_nametoindex() can not.
Signed-off-by: Feng Lu <lu.feng@6wind.com>
Reviewed-by: Alain Ritoux <alain.ritoux@6wind.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Vincent JARDIN <vincent.jardin@6wind.com>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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Quagga sources have inherited a slew of Page Feed (^L, \xC) characters
from ancient history. Among other things, these break patchwork's
XML-RPC API because \xC is not a valid character in XML documents.
Nuke them from high orbit.
Patches can be adapted simply by:
sed -e 's%^L%%' -i filename.patch
(you can type page feeds in some environments with Ctrl-V Ctrl-L)
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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Previously, the interface cost was a fixed default value that a user
was allowed to change with "ipv6 ospf6 cost XX". As what is done with
OSPFv2, we change this behaviour to compute the default interface cost
from the interface bandwidth.
The user can still force a cost with "ipv6 ospf6 cost XX". He can get
the default value with "no ipv6 ospf6 cost". Moreover, the default
cost value was 1. The cost is now computed from the bandwidth and a
default reference bandwidth of 100 MBps (as for OSPFv2). Since the
default bandwidth for an interface is 10 MBps, the "default" cost
becomes 10 instead of 1.
[DL: resolved conflict in ospf6d/ospf6_interface.c]
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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ospf6 can't run on an interface without a link local address.
Don't start the state machine when an interface comes up without
such an ip and bring it up later, when a usable link local
address is added.
Signed-off-by: Christian Franke <chris@opensourcerouting.org>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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Improve the _disable/_enable infrastructure so it gets into
a more usable shape and make 'no router ospf6' actually work.
Signed-off-by: Christian Franke <chris@opensourcerouting.org>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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The previous commits modified both zebra and bgpd for additional
SAFI field, but not any other routing daemon, which led to zebra
daemon crashing with failed assertion.
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* ospf6_zebra.c: (ospf6_zebra_if_state_update) zebra_interface_state_read
may return NULL, if it can't find an interface, deal with it.
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*/*: ifp->flags is 64 bit unsigned which can not be handled by %l on 32
bit architectures - requires %ll and the appropriate cast.
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The cmd_nodes used to configure vty, can mostly be static so
(basic data hiding 101).
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2008-08-15 Paul Jakma <paul.jakma@sun.com>
* {ospf6d,ripngd}/*: Finish job of marking functions as static, or
exporting declarations for them, to quell warning noise with
Quagga's GCC default high-level of warning flags. Thus allowing
remaining, more useful warnings to be more easily seen.
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* zebra.h: Declare new functions zebra_route_string() and
zebra_route_char().
* log.c: (zroute_lookup,zebra_route_string,zebra_route_char) New
functions to map zebra route numbers to strings.
* zebra_vty.c: (route_type_str) Remove obsolete function: use new
library function zebra_route_string() instead. Note that there
are a few differences: for IPv6 routes, we now get "ripng" and
"ospf6" instead of the old behavior ("rip" and "ospf").
(route_type_char) Remove obsolete function: ues new library function
zebra_route_char() instead. Note that there is one difference:
the old function returned 'S' for a ZEBRA_ROUTE_SYSTEM route,
whereas the new one returns 'X'.
(vty_show_ip_route_detail,vty_show_ipv6_route_detail) Replace
route_type_str() with zebra_route_string().
(vty_show_ip_route,vty_show_ipv6_route) Replace route_type_char()
with zebra_route_char().
* bgp_vty.c: (bgp_config_write_redistribute) Use new library function
zebra_route_string instead of a local hard-coded table.
* ospf6_asbr.c: Remove local hard-coded tables zroute_name and
zroute_abname. Change the ZROUTE_NAME macro to use new library
function zebra_route_string(). Remove the ZROUTE_ABNAME macro.
(ospf6_asbr_external_route_show): Replace ZROUTE_ABNAME() with
a call to zebra_route_char(), and be sure to fix the format string,
since we now have a char instead of a char *.
* ospf6_zebra.c: Remove local hard-coded tables zebra_route_name and
zebra_route_abname. Note that the zebra_route_name[] table
contained mixed-case strings, whereas the zebra_route_string()
function returns lower-case strings.
(ospf6_zebra_read_ipv6): Change debug message to use new library
function zebra_route_string() instead of zebra_route_name[].
(show_zebra): Use new library function zebra_route_string() instead
of zebra_route_name[].
* ospf_dump.c: Remove local hard-coded table ospf_redistributed_proto.
(ospf_redist_string) New function implemented using new library
function zebra_route_string(). Note that there are a few differences
in the output that will result: the new function returns strings
that are lower-case, whereas the old table was mixed case. Also,
the old table mapped ZEBRA_ROUTE_OSPF6 to "OSPFv3", whereas the
new function returns "ospf6".
* ospfd.h: Remove extern struct message ospf_redistributed_proto[],
and add extern const char *ospf_redist_string(u_int route_type)
instead.
* ospf_asbr.c: (ospf_external_info_add) In two messages, use
ospf_redist_string instead of LOOKUP(ospf_redistributed_proto).
* ospf_vty.c: Remove local hard-coded table distribute_str.
(config_write_ospf_redistribute,config_write_ospf_distribute): Use
new library function zebra_route_string() instead of distribute_str[].
* ospf_zebra.c: (ospf_redistribute_set,ospf_redistribute_unset,
ospf_redistribute_default_set,ospf_redistribute_check)
In debug messages, use ospf_redist_string() instead of
LOOKUP(ospf_redistributed_proto).
* rip_zebra.c: (config_write_rip_redistribute): Remove local hard-coded
table str[]. Replace str[] with calls to new library function
zebra_route_string().
* ripd.c: Remove local hard-coded table route_info[].
(show_ip_rip) Replace uses of str[] with calls to new library
functions zebra_route_char and zebra_route_string.
* ripng_zebra.c: (ripng_redistribute_write) Remove local hard-coded
table str[]. Replace str[i] with new library function
zebra_route_string(i).
* ripngd.c: Remove local hard-coded table route_info[].
(show_ipv6_ripng) Use new library function zebra_route_char() instead
of table route_info[].
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Implement non-blocking zclient I/O with buffering.
* zclient.h (struct zclient): Add two fields to support non-blocking
I/O: struct buffer *wb, and struct thread *t_write.
(zclient_free): Remove function.
(zebra_redistribute_send): Change 2nd arg from socket fd to
struct zclient * (needed to support non-blocking I/O and buffering).
(zclient_send_message): New function to send an arbitrary
message with non-blocking I/O.
* zclient.c (zclient_new): Create write buffer.
(zclient_free): Remove unused function.
(zclient_stop): Must cancel new t_write thread. Also, reset
all buffers: ibuf, obuf, and wb.
(zclient_failed): New helper function for typical error handling.
(zclient_flush_data): New thread to flush queued data.
(zclient_send_message): New function to send the message in
zclient->obuf to zebra using non-blocking I/O and buffering.
(zebra_message_send, zapi_ipv4_route, zapi_ipv6_route): Use
new zclient_send_message function instead of calling writen.
(zclient_start): Set socket non-blocking. Also, change 2nd arg
to zebra_redistribute_send from zclient->sock to zclient.
(zebra_redistribute_send): Change 2nd arg to struct zclient *.
Can now use zclient->obuf to assemble the message instead of
allocating a temporary stream. And call zclient_send_message to
send the message instead of writen.
(zclient_read): Convert to support non-blocking I/O by using
stream_read_try instead of deprecated stream_read.
(zclient_redistribute): Change 2nd arg to zebra_redistribute_send
from zclient->sock to zclient.
* ospf6_zebra.c (ospf6_zebra_redistribute, ospf6_zebra_no_redistribute):
Change 2nd arg to zebra_redistribute_send from zclient->sock
to zclient.
* ospf_zebra.c (ospf_zebra_add): Call zclient_send_message instead
of writen.
* rip_zebra.c (rip_redistribute_set, rip_redistribute_unset,
rip_redistribute_clean): Change 2nd arg to zebra_redistribute_send
from zclient->sock to zclient.
* ripng_zebra.c (ripng_redistribute_unset, ripng_redistribute_clean):
Change 2nd arg to zebra_redistribute_send from zclient->sock
to zclient.
* bgp_zebra.c (bgp_redistribute_set, bgp_redistribute_unset):
The 2nd arg to zebra_redistribute_send is now zclient instead of
zclient->sock.
* isis_zebra.h (isis_zebra_finish): Remove declaration of unused
function.
* isis_zebra.c (isis_zebra_route_add_ipv4): Call zclient_send_message
to send the message to zebra instead of calling writen directly, since
zclient_send_message understands non-blocking I/O and will manage
the buffer queue appropriately.
(isis_zebra_finish): Remove unused function, particularly since
the zclient_free function has been removed.
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Fix problems when netlink interfaces are renamed (same ifindex used
for a new interface). Start cleaning up some problems with the way
interface names are handled.
* interface.c: (if_new_intern_ifindex) Remove obsolete function.
(if_delete_update) After distributing the interface deletion message,
set ifp->ifindex to IFINDEX_INTERNAL.
(if_dump_vty) Detect pseudo interface by checking if ifp->ifindex is
IFINDEX_INTERNAL.
(zebra_interface) Check return code from interface_cmd.func.
Do not set internal ifindex values to if_new_intern_ifindex(),
since we now use IFINDEX_INTERNAL for all pseudo interfaces.
* kernel_socket.c: (ifm_read) Fix code and comments to reflect that
all internal interfaces now have ifp->ifindex set to IFINDEX_INTERNAL.
* rt_netlink.c: (set_ifindex) New function used to update ifp->ifindex.
Detects interface rename events by checking if that ifindex is already
being used. If it is, delete the old interface before assigning
the ifindex to the new interface.
(netlink_interface, netlink_link_change) Call set_ifindex to update
the ifindex.
* if.h: Remove define for IFINDEX_INTERNBASE and add define
IFINDEX_INTERNAL 0, since all internal (i.e. non-kernel) pseudo-
interfaces should have ifindex set to 0.
(if_new) Remove function.
(if_delete_retain) New function to delete an interface without
removing from iflist and freeing the structure.
(ifname2ifindex) New function.
* if.c: (if_new) Remove function (absorb into if_create).
(if_create) Replace function if_new with call to calloc.
Set ifp->ifindex to IFINDEX_INTERNAL. Fix off-by-one error
in assert to check length of interface name. Add error message
if interface with this name already exists.
(if_delete_retain) New function to delete an interface without
removing from iflist and freeing the structure.
(if_delete) Implement with help of if_delete_retain.
(ifindex2ifname) Reimplement using if_lookup_by_index.
(ifname2ifindex) New function to complement ifindex2ifname.
(interface) The interface command should check the name length
and fail with a warning message if it is too long.
(no_interface) Fix spelling in warning message.
(if_nametoindex) Reimplement using if_lookup_by_name.
(if_indextoname, ifaddr_ipv4_lookup) Reimplement using
if_lookup_by_index.
* bgp_zebra.c: (bgp_interface_delete) After deleting, set ifp->ifindex
to IFINDEX_INTERNAL.
* isis_zebra.c: (isis_zebra_if_del) Call if_delete_retain instead
of if_delete, since it is generally not safe to remove interface
structures. After deleting, set ifp->ifindex to IFINDEX_INTERNAL.
(zebra_interface_if_lookup) Tighten up code.
* ospf6_zebra.c: (ospf6_zebra_if_del) Previously, this whole function
was commented out. But this is not safe: we should at least update
the ifindex when the interface is deleted. So the new version
updates the interface status and sets ifp->ifindex to
IFINDEX_INTERNAL.
(ospf6_zebra_route_update) Use if_indextoname properly.
* ospf_vty.c: (show_ip_ospf_interface_sub) Show ifindex and interface
flags to help with debugging.
* ospf_zebra.c: (ospf_interface_delete) After deleting, set ifp->ifindex
to IFINDEX_INTERNAL.
(zebra_interface_if_lookup) Make function static. Tighten up code.
* rip_interface.c: (rip_interface_delete) After deleting, set
ifp->ifindex to IFINDEX_INTERNAL.
* ripng_interface.c: (ripng_interface_delete) After deleting, set
ifp->ifindex to IFINDEX_INTERNAL.
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Thanks to Mohit Thakur.
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* global: Replace strerror with safe_strerror. And vtysh/vtysh.c
needs to include "log.h" to pick up the declaration.
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zclient changes.
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* bgp_zebra.c: (bgp_interface_address_add) sync to zclient changes
(bgp_interface_address_delete) ditto.
(bgp_zebra_announce) ditto.
(bgp_zebra_withdraw) ditto.
* isis_zebra.c: Sync with zclient changes.
* zclient.c (zapi_ipv4_route) Follow Sowmini's lead and describe
message format.
* ospf6_zebra.c: Sync to zclient changes
* ospf_zebra.c: Sync with lib/zclient changes
* rip_zebra.c: sync with zclient changes.
* rip_interface.c: ditto.
* ripng_{interface,zebra}.c: sync with zclient changes
2004-05-08 Sowmini Varadhan <sowmini.varadhan@sun.com>
* zclient.c: (zapi_ipv4_add) collapsed into zapi_ipv4_route
(zapi_ipv4_delete) ditto.
(zapi_ipv4_route) add/delete a route by way of cmd arg.
(zapi_ipv6_add) collapsed into zapi_ipv6_route.
(zapi_ipv6_delete) ditto.
(zapi_ipv6_route) add/delete a route by way of cmd arg.
(zebra_interface_address_delete_read) collapsed into
zebra_interface_address_read.
(zebra_interface_address_delete_read) ditto.
(zebra_interface_address_read) read address add/delete messages
by way of type argument. Describe command message format.
(zebra_interface_add_read) Unconditionally read new ifmtu6 field.
Describe command message format.
(zebra_interface_state_read) Unconditionally read new ifmtu6 field.
(zclient_redistribute_set) Collapsed into zclient_redistribute
(zclient_redistribute_unset) ditto
(zclient_redistribute) set/unset redistribution.
(zclient_redistribute_default_set) Collapsed into
zclient_redistribute_default.
(zclient_redistribute_default_unset) ditto.
(zclient_redistribute_default) Redistribute default set/unset.
* zclient.h: delete zapi_ipv{4,6}_add, zapi_ipv{4,6}_delete. Add
zapi_ipv{4,6}_route. delete zclient_redistribute_set/unset. Add
zclient_redistribute. Ditto for
zclient_redistribute_default_{set/unset}.
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Subject: [zebra 19093] [PATCH] Two more fixes
1) From 6Wind patch - show router and interface nodes from ospf6d when
using vtysh and don't show defaults in interface node. Fixes bugzilla
#14.
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