| Age | Commit message (Collapse) | Author |
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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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* sigevent.c: On GNU_LINUX, check whether __USE_GNU is already defined.
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* vty.c: (vty_log_fixed) Use casts to (void *) to try to eliminate
compiler warnings when assigning a (const char *) value to
struct iovec iov_base.
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* zebra.h: If GNU_LINUX is defined, then define _GNU_SOURCE. This
fixes a problem where we were not getting the declaration of strnlen
in <string.h>.
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Closes Bugzilla #167.
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inet_ntoa alike.
* ripngd.[hc], ripng_interface.c, ripng_peer.c: inet6_ntoa() takes
argument now by value.
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* (global): Fix up list loops to match changes in lib/linklist,
and some basic auditing of usage.
* configure.ac: define QUAGGA_NO_DEPRECATED_INTERFACES
* HACKING: Add notes about deprecating interfaces and commands.
* lib/linklist.h: Add usage comments.
Rename getdata macro to listgetdata.
Rename nextnode to listnextnode and fix its odd behaviour to be
less dangerous.
Make listgetdata macro assert node is not null, NULL list entries
should be bug condition.
ALL_LIST_ELEMENTS, new macro, forward-referencing macro for use
with for loop, Suggested by Jim Carlson of Sun.
Add ALL_LIST_ELEMENTS_RO for cases which obviously do not need the
"safety" of previous macro.
LISTNODE_ADD and DELETE macros renamed to ATTACH, DETACH, to
distinguish from the similarly named functions, and reflect their
effect better.
Add a QUAGGA_NO_DEPRECATED_INTERFACES define guarded section
with the old defines which were modified above,
for backwards compatibility - guarded to prevent Quagga using it..
* lib/linklist.c: fix up for linklist.h changes.
* ospf6d/ospf6_abr.c: (ospf6_abr_examin_brouter) change to a single
scan of the area list, rather than scanning all areas first for
INTER_ROUTER and then again for INTER_NETWORK. According to
16.2, the scan should be area specific anyway, and further
ospf6d does not seem to implement 16.3 anyway.
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ripngd/ripngd.c (inet6_ntop).
* ripngd.[hc]: Remove inet6_ntop() and any usage of it. inet6_ntoa()
from lib is used now.
* ripng_interface.c: inet6_ntop() -> inet6_ntoa().
* ripng_peer.c: inet6_ntop() -> inet6_ntoa().
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* lib/vty.c: Improve logging of failures to open vty socket(s).
See bugid #163.
* zebra/zserv.c: print more helpful errors when we fail to successfully
bind and listen on zserv socket. Closes bugzilla #163.
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* if_ioctl.c: (interface_list_ioctl) Use if_get_by_name_len.
* if_proc.c: (ifaddr_proc_ipv6) Increase size of ifname buffer to
avoid overflow.
* kernel_socket.c: (ifan_read) Use if_get_by_name_len.
* if.h: Fix comments to reflect that if_lookup_by_name and
if_get_by_name now require the argument strings to be NUL-terminated.
* if.c: (if_lookup_by_name) Compare using strcmp.
(if_get_by_name) Pass strlen(ifname) as 2nd arg to if_create.
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* if.c: (if_nametoindex) The man page is rather vague, but it seems
like the argument to if_nametoindex has an implicit maximum length
of IFNAMSIZ characters.
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* if.h: (if_lookup_by_name_len, if_get_by_name_len) New functions.
* if.c: (if_lookup_by_name_len, if_get_by_name_len) New functions.
(if_get_by_name) Tighten up code.
(interface) Use new function if_get_by_name_len.
* zclient.c: (zebra_interface_add_read) Use new if_get_by_name_len
function.
(zebra_interface_state_read) Use new if_lookup_by_name_len function.
* kernel_socket.c: (ifm_read) Use new if_lookup_by_name_len function
to save a memcpy.
* if_ioctl_solaris.c: (interface_list_ioctl) Fix subtle bug with new
if_get_by_name_len function.
* ospf_interface.c: (ospf_vl_new) Use strnlen to fix call to if_create.
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* str.c: Replace strlcpy and strlcat with actual working versions
copied from rsync-2.6.2/lib/compat.c.
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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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* configure.ac: Add strnlen to AC_CHECK_FUNCS.
* zebra.h: Should include str.h to pick up missing functions.
* str.h: Declare strnlen if needed.
* str.c: Do not include str.h since zebra.h now includes it.
(strnlen) New function.
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* zebra.h: Must check whether __attribute__ should be defined before
including zassert.h.
[backport candidate]
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* (global) update all c files to match the lib/vector.h rename of
(struct vector).active to max, and vector_max macro to
vector_active.
* lib/vector.h: Rename to (struct vector).max to slightly less
confusing active, for the number of active slots, distinct from
allocated or active-and-not-empty. Rename vector_max to
vector_active for same reason.
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* command.c: (various) Fix indentation and other whitespace.
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* command.c: (sort_node) use vector_max instead of referencing
(struct vector *)->max directly. Test that vector_max is > 0
before using it to calculate an index.
Fixup vector loop to make main body conditional on vector slot
not being empty.
(cmd_cmdsize) Fixup vector loop to make main body conditional on
vector slot not being empty.
(cmd_filter_by_completion) ditto
(cmd_filter_by_string) ditto
(is_cmd_ambiguous) ditto
(cmd_describe_command_real) Change index integers to unsigned.
Test that vector_max is > 0 before using it to calculate an index.
Return immediately with CMD_ERR_NO_MATCH if vline has no
active slots.
Fixup vector loop to make main body conditional on vector slot
not being empty.
(cmd_complete_command_real) ditto.
(cmd_execute_command_strict) Fixup vector loop to be conditional
on non-null slot.
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* command.c: (config_list_cmd) Don't list hidden or deprecated
commands, hiding these from tab completion is still to be done.
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* command.c: Undo commit of sign warning fix and hidden command
in list_cmd. Sign warning is more subtle. list_cmd on its own
will be committed after.
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* command.c: (no_banner_motd_cmd) use XFREE.
* vty.c: (vty_hello) fix the indentation and comment.
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* command.c: (cmd_describe_command_real) sign compile warning fix
(cmd_complete_command_real) ditto.
(config_list_cmd) Don't list hidden or deprecated commands,
hiding these from tab completion is still to be done.
* command.h: cmd attr enum should start at 1.
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* command.c: (banner_motd_file_cmd) use XSTRDUP/XFREE
* vty.c: (vty_hello) suggestions from Andrew, read by line and
stub out trailling non-printable characters on each line thus
allowing us to specify VTY_NEWLINE to vty_out.
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* vty.c: (vty_hello) display motd file, if set
* command.h: add char *motdfile to struct host
* command.c: (config_write_host) write out motdfile config
(banner_motd_file_cmd) new command, allow motd to be read from
file.
(no_banner_motd_cmd) free motdfile string, if needs be.
(cmd_init) init (struct host).motdfile. Add new motd file
commands.
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* vty.c: Fix fd leak.
[backport candidate]
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* stream.c: (stream_read_try) Log a warning message if a fatal
I/O error occurs.
(stream_fifo_new) Fix prototype.
* stream.h: Fix prototype for stream_fifo_new (need void arg).
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* {vty.h,vty.c}: Remove vty_finish (duplicate of vty_reset).
* isis_main.c: (reload) Call vty_reset instead of vty_finish (both
functions were exactly the same).
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* buffer.h: Make the struct buffer and struct buffer_data structures
private by moving them inside buffer.c. Add comments for all
functions. Rename buffer_write as buffer_put (to be more consistent
with the buffer_putc and buffer_putstr functions). Declare a new
buffer_write function that is used to write data to a file descriptor
and/or add it to the buffer queue. Remove unused function
buffer_flush_vty_all. Create a new enum typedef buffer_status_t
to be used as the return code for all buffer_flush* functions
and buffer_write.
* buffer.c: The struct buffer and struct buffer_data declarations
are now private to this file. In conjunction with that, remove
some unnecessary fields: struct buffer (alloc, unused_head,
unused_tail, length), struct buffer_data (prev).
(buffer_data_new) Removed: functionality incorporated into buffer_add.
(buffer_data_free) Removed: use a macro BUFFER_DATA_FREE instead.
(buffer_new) Use calloc instead of malloc + memset(zero).
Supply an appropriate default size if the specified size is 0.
(buffer_free) Eliminate code duplication by calling buffer_reset to
free the contents of the buffer (and remove unused code related
to unused_head).
(buffer_empty,buffer_putc,buffer_putstr) Aesthetic change (make more
compact).
(buffer_reset) Use macro BUFFER_DATA_FREE. No need to set
alloc and length to 0 (these fields have been removed).
(buffer_add) Fix scope to be static. Call XMALLOC directly instead
of calling removed buffer_data_new function. Simplify the logic
(since it's now a singly-linked list instead of doubly-linked).
(buffer_write) Renamed to buffer_put. Change to void, since return
code of 1 was meaningless. No need to adjust length field, since
it has been removed.
(buffer_putw,buffer_flush,buffer_flush_vty_all,buffer_flush_vty)
Remove unused functions.
(buffer_flush_all) Rewrite using buffer_flush_available to eliminate
a possible failure mode if IOV_MAX is less than the number of buffers
on the queue.
(buffer_flush_window) Incorporate logic from buffer_flush_vty.
Log an error message if there is a writev error.
(buffer_flush_available) Be more paranoid: check for case where
buffer is already empty. Use new ERRNO_IO_RETRY macro, and use
new enum for return codes. Simplify deletion logic (since it's
now a singly-linked list).
(buffer_write) New function for use with non-blocking I/O.
* vty.h: Replace the struct vty sb_buffer field with a fixed-size
(5-character) sb_buf field and an sb_len field, since using
a struct buffer was inappropriate for this task. Add some useful
comments about telnet window size negotiation.
* vty.c: Include <arpa/telnet.h> (no longer included by zebra.h).
Remove VTY_OBUF_SIZE (instead use buffer_new default size).
Make telnet_backward_char and telnet_space_char static const.
(vty_out) Replace buffer_write with buffer_put.
(vty_log_out) Check for I/O errors. If fatal, close the vty session.
Consolidate 3 separate writes into a single write call.
(vty_will_echo,vty_command,vty_next_line,vty_previous_line,
vty_end_config,vty_describe_fold,vty_clear_buf,vty_serv_sock_addrinfo,
vty_serv_sock_family,vty_serv_un,vty_use_backup_config,exec_timeout,
vty_config_write,vty_save_cwd) Fix scope to static.
(vty_new) Let buffer_new use its default buffer size.
(vty_write) Fix signature: 2nd arg should be const char *.
Replaced buffer_write with buffer_put.
(vty_telnet_option) Fix minor bug (window height or width greater than
255 was broken). Use sb_buf and sb_len instead of removed sb_buffer
(which was being used improperly).
(vty_read) On error, use ERRNO_IO_RETRY to decide whether it's fatal.
If the error is fatal, call buffer_reset so vty_close does not attempt
to flush the data. Use new sb_buf and sb_len instead of sb_buffer
to store the SB negotiation string.
(vty_flush) When vty->lines is 0, call buffer_flush_available instead
of buffer_flush_window. Look at the return code from buffer_flush
to detect I/O errors (and in that case, log an error message and
close the vty).
(vty_create) Fix scope to static. Initialize sb_len to 0 instead
of creating sb_buffer.
(vty_accept) Set socket nonblocking.
(vtysh_accept) Use new set_nonblocking function instead of calling
fcntl directly.
(vtysh_flush) New function called from vtysh_read (after command
execution) and from vtysh_write. This flushes the buffer
and reacts appropriately to the return code (by closing the vty
or scheduling further flushes).
(vtysh_read) Check whether error is fatal using ERRNO_IO_RETRY.
If not, just try again later. Otherwise, call buffer_reset before
calling vty_close (to avoid trying to flush the buffer in vty_close).
Fix logic to allow case where a command does not arrive atomically
in a single read call by checking for the terminating NUL char.
(vtysh_write) Use new vtysh_flush helper function.
(vty_close) No need to call buffer_empty, just call buffer_flush_all
in any case (it will check whether the buffer is empty).
Do not free sb_buffer (since it has been removed).
(vty_log_fixed) Use writev instead of write.
* zebra.h: Do not include <arpa/telnet.h>, since this is used only
by lib/vty.c.
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will allow to update node when:
i) a node is inserted into the priority queue;
ii) a node position is modified in the priority queue;
* pqueue.h: Export trickle_down() function.
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* stream.c: (stream_new) fix dumb mistake.
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* stream.c: (stream_read_try) Use new ERRNO_IO_RETRY macro.
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* network.h: Define a new ERRNO_IO_RETRY macro to test whether an I/O
operation should be retried. This eliminates the need to duplicate
the same logic testing for EAGAIN or EINTR in multiple places.
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* stream.h: Declare new function stream_read_try suitable for use
with non-blocking file descriptors. Indicate that stream_read
and stream_read_unblock are deprecated.
* stream.c: (stream_read_try) New function for use with non-blocking
I/O.
(stream_recvmsg) Should return -1 if the stream is too small to
contain the data.
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* network.c: (set_nonblocking) Should check return code from
fcntl(F_GETFL).
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* network.h: Declare new function set_nonblocking. Indicate that
readn and writen are deprecated.
* network.c: (set_nonblocking) New function to make a file descriptor
non-blocking, since it seems silly to have fcntl calls sprinkled
throughout the code.
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* stream.h: Unsigned long updated to size_t
* stream.c: ditto
* stream.h: Add stream_copy, stream_dup, stream_recvmsg.
Add comment describing struct stream abstraction, and various
other comments.
Deprecate several unsafe/ambigious macros.
Add STREAM_WRITEABLE and STREAM_READABLE.
Add (stream_getl_from) for symmetry.
Update stream_forward_{endp,getp} to use size_t offset.
Make stream data a 0 length array, rather than a seperate malloc.
* stream.c: Add consistency checks. Update to follow stream.h
changes.
(stream_new) Alloc stream+data in one go.
(stream_copy) new function, copy a stream.
(stream_dup) new function, dup a stream.
(stream_recvmsg) new function, recvmsg data into a stream.
(stream_empty) no need to check getp == 0.
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* stream.h: Unsigned long updated to size_t
* stream.c: ditto
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* (global) Update code to match stream.h changes.
stream_get_putp effectively replaced with stream_get_endp.
stream_forward renamed to stream_forward_getp.
stream_forward_endp introduced to replace some previous
setting/manual twiddling of putp by daemons.
* lib/stream.h: Remove putp. Update reference to putp with endp.
Add stream_forward_endp, which daemons were doing manually.
Rename stream_forward to stream_forward_getp.
lib/stream.c: Remove/update references to putp.
introduce stream_forward_endp.
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* zebra.h: Change macro definitions SET_FLAG and UNSET_FLAG
to use compound assignment operators (aesthetic change).
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* log.c: (zlog_signal,zlog_backtrace_sigsafe) Eliminate use of fileno()
since it is not async-signal-safe.
(_zlog_assert_failed) Rewrite crashlog logic more compactly.
(zlog_set_file,zlog_reset_file,zlog_rotate) Update logfile_fd
for use in signal handler.
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* log.c: (syslog_sigsafe) Reduce scope of syslog_fd: it is accessed
inside this function only.
(open_crashlog) New function to open /var/tmp/quagga.<daemon>.crashlog
with flags O_WRONLY|O_CREAT|O_EXCL to save some crash info.
(zlog_signal,_zlog_assert_failed) Increase logging priority from
LOG_ERR to LOG_CRIT. If no file logging is configured, try to use
open_crashlog to create a crash logfile.
(zlog_backtrace_sigsafe) If a crashlog file descriptor is open,
dump a backtrace to that file.
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* ospf_packet.c: (ospf_read) Fix bug: must check for state ISM_Down,
not for event ISM_InterfaceDown. And improve the message by
adding the interface flags.
* if.h: Declare if_flag_dump.
[backport candidate]
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* daemon.c: (daemon) Replace perror with zlog_err.
* vty.c: (vty_serv_un) Replace perror with zlog_err.
* ripd.c: (rip_create_socket) Replace perror with zlog_err.
* ioctl.c: (if_ioctl,if_ioctl_ipv6,if_get_flags) Replace perror with
zlog_err.
* ioctl_solaris.c: (if_ioctl,if_ioctl_ipv6) Replace perror with
zlog_err.
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* buffer.h: Fix comment on buffer_getstr to reflect that it now
uses XMALLOC.
* buffer.c: (buffer_getstr) Use XMALLOC(MTYPE_TMP) instead of malloc.
* filter.c: (access_list_remark,ipv6_access_list_remark) Use
argv_concat instead of buffer_getstr.
* if.c: (interface_desc) Use argv_concat instead of buffer_getstr.
* plist.c: (ip_prefix_list_description,ipv6_prefix_list_description)
Use argv_concat instead of buffer_getstr.
* bgp_filter.c: (ip_as_path,no_ip_as_path) Use argv_concat instead
of buffer_getstr.
* bgp_route.c: (bgp_show_regexp) Fix memory leak: need to free string
returned by buffer_getstr.
(bgp_show_community) Must use XFREE instead of free on string
returned by buffer_getstr.
* bgp_routemap.c: (set_community) Must use XFREE instead of free
on string returned by buffer_getstr.
* bgp_vty.c: (neighbor_description) Use argv_concat instead of
buffer_getstr.
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* lib/buffer.h: Document behavior of buffer_getstr function.
* lib/buffer.c: (buffer_getstr) Fix bug: must handle case where
the string extends beyond the head struct buffer_data.
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* lib/command.h: Document behavior of argv_concat function.
* lib/command.c: (argv_concat) Calculate total string length first so
we can call malloc just once (instead of realloc'ing to add each
string element).
(do_echo,config_logmsg) Allow for possible NULL return value from
argv_concat.
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use it as well.
* vtysh/vtysh.c: Implement walkup in node tree for vtysh as it already
works in vty.
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