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* slirp: call socket_set_fast_reuse instead of setting SO_REUSEADDRSebastian Ottlik2013-10-021-3/+1
| | | | | | | | | | SO_REUSEADDR should be avoided on Windows but is desired on other operating systems. So instead of setting it we call socket_set_fast_reuse that will result in the appropriate behaviour on all operating systems. Signed-off-by: Sebastian Ottlik <ottlik@fzi.de> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Weil <sw@weilnetz.de>
* slirp: Port redirection option behave differently on Linux and WindowsTaimoor Mirza2013-09-011-0/+2
| | | | | | | | | | | port redirection code uses SO_REUSEADDR socket option before binding to host port. Behavior of SO_REUSEADDR is different on Windows and Linux. Relaunching QEMU with same host and guest port redirection values on Linux throws error but on Windows it does not throw any error. Problem is discussed in http://lists.gnu.org/archive/html/qemu-devel/2013-04/msg03089.html Signed-off-by: Taimoor Mirza <tmirza@codesourcery.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
* MinGW: Replace setsockopt by qemu_setsocketoptStefan Weil2013-03-221-2/+2
| | | | | | | | | Instead of adding missing type casts which are needed by MinGW for the 4th argument, the patch uses qemu_setsockopt which was invented for this purpose. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* slirp: Properly initialize pollfds_idx of new socketsJan Kiszka2013-02-261-0/+1
| | | | | | | | Otherwise we may start processing sockets in slirp_pollfds_poll that were created past slirp_pollfds_fill. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
* slirp: switch to GPollFDStefan Hajnoczi2013-02-211-9/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Slirp uses rfds/wfds/xfds more extensively than other QEMU components. The rarely-used out-of-band TCP data feature is used. That means we need the full table of select(2) to g_poll(3) events: rfds -> G_IO_IN | G_IO_HUP | G_IO_ERR wfds -> G_IO_OUT | G_IO_ERR xfds -> G_IO_PRI I came up with this table by looking at Linux fs/select.c which maps select(2) to poll(2) internally. Another detail to watch out for are the global variables that reference rfds/wfds/xfds during slirp_select_poll(). sofcantrcvmore() and sofcantsendmore() use these globals to clear fd_set bits. When sofcantrcvmore() is called, the wfds bit is cleared so that the write handler will no longer be run for this iteration of the event loop. This actually seems buggy to me since TCP connections can be half-closed and we'd still want to handle data in half-duplex fashion. I think the real intention is to avoid running the read/write handler when the socket has been fully closed. This is indicated with the SS_NOFDREF state bit so we now check for it before invoking the TCP write handler. Note that UDP/ICMP code paths don't care because they are connectionless. Note that slirp/ has a lot of tabs and sometimes mixed tabs with spaces. I followed the style of the surrounding code. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Message-id: 1361356113-11049-6-git-send-email-stefanha@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* Wrap recv to avoid warningsBlue Swirl2011-07-251-2/+2
| | | | | | | | | | | | | Avoid warnings like these by wrapping recv(): CC slirp/ip_icmp.o /src/qemu/slirp/ip_icmp.c: In function 'icmp_receive': /src/qemu/slirp/ip_icmp.c:418:5: error: passing argument 2 of 'recv' from incompatible pointer type [-Werror] /usr/local/lib/gcc/i686-mingw32msvc/4.6.0/../../../../i686-mingw32msvc/include/winsock2.h:547:32: note: expected 'char *' but argument is of type 'struct icmp *' Remove also casts used to avoid warnings. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* slirp: Forward ICMP echo requests via unprivileged socketsJan Kiszka2011-07-231-0/+2
| | | | | | | | | | | | Linux 3.0 gained support for unprivileged ICMP ping sockets. Use this feature to forward guest pings to the outer world. The host admin has to set the ping_group_range in order to grant access to those sockets. To allow ping for the users group (GID 100): echo 100 100 > /proc/sys/net/ipv4/ping_group_range Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* slirp: Replace u_int8_t, u_int16_t, u_int32_t, u_int64_t by standard int typesStefan Weil2010-07-251-1/+1
| | | | | | | | There is no need to have a second set of integral types. Replace them by the standard types from stdint.h. Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
* slirp: fix structure initialization in tcp_listen()Juha Riihimäki2010-04-201-0/+1
| | | | | | | | | | A data structure of type sockaddr_in is allocated from stack but not properly initialized. This may lead to a failure in the bind() call later on. Fixed by filling the contents of the structure with zeroes before using it. Signed-off-by: Juha Riihimäki <juha.riihimaki@nokia.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* slirp: remove dead initialization, spotted by clangBlue Swirl2010-03-071-4/+0
| | | | | | Value stored during initialization is never read. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* Don't leak file descriptorsKevin Wolf2009-12-031-1/+1
| | | | | | | | We're leaking file descriptors to child processes. Set FD_CLOEXEC on file descriptors that don't need to be passed to children to stop this misbehaviour. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* slirp: Read host DNS config on demandEd Swierk2009-08-271-1/+2
| | | | | | | | | | | | | | | | | Currently the qemu user-mode networking stack reads the host DNS configuration (/etc/resolv.conf or the Windows equivalent) only once when qemu starts. This causes name lookups in the guest to fail if the host is moved to a different network from which the original DNS servers are unreachable, a common occurrence when the host is a laptop. This patch changes the slirp code to read the host DNS configuration on demand, caching the results for at most 1 second to avoid unnecessary overhead if name lookups occur in rapid succession. On non-Windows hosts, /etc/resolv.conf is re-read only if the file has been replaced or if its size or mtime has changed. Signed-off-by: Ed Swierk <eswierk@aristanetworks.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* slirp: Factor out internal state structureJan Kiszka2009-06-291-14/+23
| | | | | | | | | | | The essence of this patch is to stuff (almost) all global variables of the slirp stack into the structure Slirp. In this step, we still keep the structure as global variable, directly accessible by the whole stack. Changes to the external interface of slirp will be applied in the following patches. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* slirp: Cleanup and basic reanimation of debug codeJan Kiszka2009-06-291-1/+2
| | | | | Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* slirp: Drop dead codeJan Kiszka2009-06-291-53/+0
| | | | | | | | | | After all its years inside the qemu tree, there is no point in keeping the dead code paths of slirp. This patch is a first round of removing usually commented out code parts. More cleanups need to follow (and maybe finally a proper reindention). Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* slirp: Prepare for persistent socket state flagsJan Kiszka2009-06-291-8/+14
| | | | | | | | This prepares for adding flags to socket.so_state that must not be removed during the lifetime of a socket. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* slirp: Bind support for host forwarding rulesJan Kiszka2009-06-291-5/+5
| | | | | | | | | Extend the hostfwd rule format so that the user can specify on which host interface qemu should listen for incoming connections. If omitted, binding will takes place against all interfaces. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* slirp: Rework internal configurationJan Kiszka2009-06-291-8/+5
| | | | | | | | | | | | | The user mode IP stack is currently only minimally configurable /wrt to its virtual IP addresses. This is unfortunate if some guest has a fixed idea of which IP addresses to use. Therefore this patch prepares the stack for fully configurable IP addresses and masks. The user interface and default addresses remain untouched in this step, they will be enhanced in the following patch. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* Fix mingw32 build warningsBlue Swirl2009-06-131-1/+6
| | | | | | | | Work around buffer and ioctlsocket argument type signedness problems Suppress a prototype which is unused on mingw32 Expand a macro to avoid warnings from some GCC versions Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* Delete some unused macros detected with -Wp,-Wunused-macros useblueswir12009-03-161-1/+0
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6856 c046a42c-6fe2-441c-8c8c-71466251a162
* Sparse fixes: NULL use, header order, ANSI prototypes, staticblueswir12009-03-071-36/+16
| | | | | | | | | | | | | Fix Sparse warnings: * use NULL instead of plain 0 * rearrange header include order to avoid redefining types accidentally * ANSIfy SLIRP * avoid "restrict" keyword * add static git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6736 c046a42c-6fe2-441c-8c8c-71466251a162
* Redirect slirp traffic to/from qemu character device (Gleb Natapov)aliguori2009-01-081-21/+80
| | | | | | | | | Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6240 c046a42c-6fe2-441c-8c8c-71466251a162
* Remove unnecessary trailing newlinesblueswir12008-12-131-1/+0
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6000 c046a42c-6fe2-441c-8c8c-71466251a162
* Make struct iovec universally availablealiguori2008-12-051-0/+1
| | | | | | | | | | | Vectored IO APIs will require some sort of vector argument. It makes sense to use struct iovec and just define it globally for Windows. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5889 c046a42c-6fe2-441c-8c8c-71466251a162
* Fix warning about variables used uninitializedblueswir12008-10-011-0/+4
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5378 c046a42c-6fe2-441c-8c8c-71466251a162
* Fix some warnings that would be generated by gcc -Wredundant-declsblueswir12008-08-301-1/+0
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5115 c046a42c-6fe2-441c-8c8c-71466251a162
* Special-case CTL_ALIAS instead of CTL_DNS in udp loopback test.balrog2008-05-101-2/+3
| | | | | | | | At the same time remove a bogus test (tested by Jason Wessel). Quiet some gcc4 warnings from slirp compilation. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4402 c046a42c-6fe2-441c-8c8c-71466251a162
* Use const and static as needed, disable unused codeblueswir12007-10-261-11/+15
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3452 c046a42c-6fe2-441c-8c8c-71466251a162
* find -type f | xargs sed -i 's/[\t ]*$//g' # Yes, again. Note the star in ↵ths2007-09-171-11/+11
| | | | | | the regex. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3177 c046a42c-6fe2-441c-8c8c-71466251a162
* find -type f | xargs sed -i 's/[\t ]$//g' # on most filesths2007-09-161-72/+72
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3173 c046a42c-6fe2-441c-8c8c-71466251a162
* separate alias_addr (10.0.2.2) from our_addr (Ed Swierk)bellard2006-05-031-1/+1
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1895 c046a42c-6fe2-441c-8c8c-71466251a162
* Solaris port (Ben Taylor)bellard2006-04-251-0/+3
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1855 c046a42c-6fe2-441c-8c8c-71466251a162
* Set SO_REUSEADDR before calling bind().pbrook2006-03-111-1/+1
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1783 c046a42c-6fe2-441c-8c8c-71466251a162
* socket send fixbellard2004-11-241-2/+6
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1158 c046a42c-6fe2-441c-8c8c-71466251a162
* fixed invalid received lengthbellard2004-11-211-2/+6
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1155 c046a42c-6fe2-441c-8c8c-71466251a162
* windows fixes (Gregory Alexander)bellard2004-10-071-8/+18
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1102 c046a42c-6fe2-441c-8c8c-71466251a162
* win32 compilebellard2004-07-121-1/+1
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1016 c046a42c-6fe2-441c-8c8c-71466251a162
* initial user mode network supportbellard2004-04-221-0/+696
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@733 c046a42c-6fe2-441c-8c8c-71466251a162
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