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2022-09-26Remove the slirp submodule (i.e. compile only with an external libslirp)Thomas Huth1-0/+0
Since QEMU 7.1 we don't support Ubuntu 18.04 anymore, so the last big important Linux distro that did not have a pre-packaged libslirp has been dismissed. All other major distros seem to have a libslirp package in their distribution already - according to repology.org: Fedora 35: 4.6.1 CentOS 8 (RHEL-8): 4.4.0 Debian 11: 4.4.0 OpenSUSE Leap 15.3: 4.3.1 Ubuntu LTS 20.04: 4.1.0 FreeBSD Ports: 4.7.0 NetBSD pkgsrc: 4.7.0 Homebrew: 4.7.0 MSYS2 mingw: 4.7.0 The only one that was still missing a libslirp package is OpenBSD - but the next version (OpenBSD 7.2 which will be shipped in October) is going to include a libslirp package. Since QEMU 7.2 will be published after OpenBSD 7.2, we should be fine there, too. So there is no real urgent need for keeping the slirp submodule in the QEMU tree anymore. Thus let's drop the slirp submodule now and rely on the libslirp packages from the distributions instead. Message-Id: <20220824151122.704946-7-thuth@redhat.com> Acked-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-05-12slirp: bump submodule past 4.7 releasePaolo Bonzini1-0/+0
Version 4.7 of slirp provides a new timer API that works better with CFI, together with several other improvements: * Allow disabling the internal DHCP server !22 * Support Unix sockets in hostfwd !103 * IPv6 DNS proxying support !110 * bootp: add support for UEFI HTTP boot !111 and bugfixes. The submodule update also includes 2 commits to fix warnings in the Win32 build. Reviewed-by: Marc-André Lureau <malureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-08-03Update libslirp to v4.6.1Marc-André Lureau1-0/+0
Switch from stable-4.2 branch to upstream v4.6.1 release + fixes. ## [Unreleased] ### Fixed - Haiku fixes. !98 !99 - Fix a minor DHCP regression introduced in 4.6.0. !97 ## [4.6.1] - 2021-06-18 ### Fixed - Fix DHCP regression introduced in 4.6.0. !95 ## [4.6.0] - 2021-06-14 ### Added - mbuf: Add debugging helpers for allocation. !90 ### Changed - Revert "Set macOS deployment target to macOS 10.4". !93 ### Fixed - mtod()-related buffer overflows (CVE-2021-3592 #44, CVE-2021-3593 #45, CVE-2021-3594 #47, CVE-2021-3595 #46). - poll_fd: add missing fd registration for UDP and ICMP - ncsi: make ncsi_calculate_checksum work with unaligned data. !89 - Various typos and doc fixes. !88 ## [4.5.0] - 2021-05-18 ### Added - IPv6 forwarding. !62 !75 !77 - slirp_neighbor_info() to dump the ARP/NDP tables. !71 ### Changed - Lazy guest address resolution for IPv6. !81 - Improve signal handling when spawning a child. !61 - Set macOS deployment target to macOS 10.4. !72 - slirp_add_hostfwd: Ensure all error paths set errno. !80 - More API documentation. ### Fixed - Assertion failure on unspecified IPv6 address. !86 - Disable polling for PRI on MacOS, fixing some closing streams issues. !73 - Various memory leak fixes on fastq/batchq. !68 - Memory leak on IPv6 fast-send. !67 - Slow socket response on Windows. !64 - Misc build and code cleanups. !60 !63 !76 !79 !84 ## [4.4.0] - 2020-12-02 ### Added - udp, udp6, icmp: handle TTL value. !48 - Enable forwarding ICMP errors. !49 - Add DNS resolving for iOS. !54 ### Changed - Improve meson subproject() support. !53 - Removed Makefile-based build system. !56 ### Fixed - socket: consume empty packets. !55 - check pkt_len before reading protocol header (CVE-2020-29129). !57 - ip_stripoptions use memmove (fixes undefined behaviour). !47 - various Coverity-related changes/fixes. ## [4.3.1] - 2020-07-08 ### Changed - A silent truncation could occur in `slirp_fmt()`, which will now print a critical message. See also #22. ### Fixed - CVE-2020-10756 - Drop bogus IPv6 messages that could lead to data leakage. See !44 and !42. - Fix win32 builds by using the SLIRP_PACKED definition. - Various coverity scan errors fixed. !41 - Fix new GCC warnings. !43 ## [4.3.0] - 2020-04-22 ### Added - `SLIRP_VERSION_STRING` macro, with the git sha suffix when building from git - `SlirpConfig.disable_dns`, to disable DNS redirection #16 ### Changed - `slirp_version_string()` now has the git sha suffix when building form git - Limit DNS redirection to port 53 #16 ### Fixed - Fix build regression with mingw & NetBSD - Fix use-afte-free in `ip_reass()` (CVE-2020-1983) Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Doug Evans <dje@google.com>
2020-11-27slirp: update to fix CVE-2020-29129 CVE-2020-29130Marc-André Lureau1-0/+0
An out-of-bounds access issue was found in the SLIRP user networking implementation of QEMU. It could occur while processing ARP/NCSI packets, if the packet length was shorter than required to accommodate respective protocol headers and payload. A privileged guest user may use this flaw to potentially leak host information bytes. Marc-André Lureau (1): Merge branch 'stable-4.2' into 'stable-4.2' Prasad J Pandit (1): slirp: check pkt_len before reading protocol header Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2020-07-28slirp: update to latest stable-4.2 branchMarc-André Lureau1-0/+0
Dr. David Alan Gilbert (1): ip_stripoptions use memmove Jindrich Novy (4): Fix possible infinite loops and use-after-free Use secure string copy to avoid overflow Be sure to initialize sockaddr structure Check lseek() for failure Marc-André Lureau (2): util: do not silently truncate Merge branch 'stable-4.2' into 'stable-4.2' Philippe Mathieu-Daudé (3): Fix win32 builds by using the SLIRP_PACKED definition Fix constness warnings Remove unnecessary break Ralf Haferkamp (2): Drop bogus IPv6 messages Fix MTU check Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2020-04-21slirp: update to fix CVE-2020-1983Marc-André Lureau1-0/+0
This is an update on the stable-4.2 branch of libslirp.git: git shortlog 55ab21c9a3..2faae0f778f81 Marc-André Lureau (1): Fix use-afte-free in ip_reass() (CVE-2020-1983) CVE-2020-1983 is actually a follow up fix for commit 126c04acbabd7ad32c2b018fe10dfac2a3bc1210 ("Fix heap overflow in ip_reass on big packet input") which was was included in qemu v4.1 (commit e1a4a24d262ba5ac74ea1795adb3ab1cd574c7fb "slirp: update with CVE-2019-14378 fix"). Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 20200421170227.843555-1-marcandre.lureau@redhat.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-03-22slirp: update submodule to v4.2.0+Marc-André Lureau1-0/+0
git shortlog 126c04acbabd7ad32c2b018fe10dfac2a3bc1210..55ab21c9a36852915b81f1b41ebaf3b6509dd8ba 5eraph (1): Use specific outbound IP address Akihiro Suda (8): remove confusing comment that exists from ancient slirp add slirp_new(SlirpConfig *, SlirpCb *, void *) allow custom MTU add disable_host_loopback (prohibit connections to 127.0.0.1) add SlirpConfig version emu: remove dead code emu: disable by default fix a typo in a comment Anders Waldenborg (1): state: fix loading of guestfwd state Giuseppe Scrivano (1): socket: avoid getpeername after shutdown(SHUT_WR) Jindrich Novy (1): Don't leak memory when reallocation fails. Jordi Pujol Palomer (1): fork_exec: correctly parse command lines that contain spaces Marc-André Lureau (60): Merge branch 'AkihiroSuda/libslirp-slirp4netns' Merge branch 'fix-typo' into 'master' meson: make it subproject friendly Merge branch 'meson' into 'master' misc: fix compilation warnings Merge branch 'fix-shutdown-wr' into 'master' sbuf: remove unused and undefined sbcopy() path sbuf: check more strictly sbcopy() bounds with offset sbuf: replace a comment with a runtime warning Replace remaining malloc/free user with glib tcp_attach() can no longer fail state: can't ENOMEM sbuf: use unsigned types sbuf: simplify sbreserve() dnssearch: use g_strv_length() vmstate: silence scan-build warning gitlab-ci: run scan-build Merge branch 'mem-cleanups' into 'master' libslirp.map: bind slirp_new to SLIRP_4.1 version meson: fix libtool versioning Release v4.1.0 Merge branch '4.1.0' into 'master' CHANGELOG: start unreleased section Merge branch 'add-unix' into 'master' util: add G_SIZEOF_MEMBER() macro Check bootp_filename is not going to be truncated bootp: remove extra cast bootp: replace simple snprintf() with strcpy() tftp: clarify what is actually OACK m_len tcp_emu: add more fixme/warnings comments util: add slirp_fmt() helpers dhcpv6: use slirp_fmt() misc: use slirp_fmt0() tftp: use slirp_fmt0() tcp_ctl: use slirp_fmt() tcp_emu: fix unsafe snprintf() usages misc: improve error report Use g_snprintf() util: add gnuc format function attribute to slirp_fmt* Merge branch 'aw-guestfwd-state' into 'master' Merge branch 'slirp-fmt' into 'master' socket: remove extra label and variable socket: factor out sotranslate ipv4/ipv6 handling socket: remove need for extra scope_id variable socket: do not fallback on host loopback if get_dns_addr() failed socket: do not fallback on loopback addr for addresses in our mask/prefix Prepare for v4.2.0 release Merge branch 'translate-fix' into 'master' Merge branch 'release-v4.2.0' into 'master' changelog: post-release changelog: fix link .gitlab-ci: add --werror, treat CI build warnings as errors Revert "socket: remove need for extra scope_id variable" Teach slirp_version_string() to return vcs version Merge branch 'mingw-fix' into 'master' Merge branch 'vcs-version' into 'master' meson: bump required version to 0.49 build-sys: fix NetBSD build regression Merge branch 'netbsd-fix' into 'master' build-sys: make libslirp-version.h depend on Makefile PanNengyuan (1): libslirp: fix NULL pointer dereference in tcp_sockclosed Philippe Mathieu-Daudé (1): Add a git-publish configuration file Prasad J Pandit (4): slirp: ncsi: compute checksum for valid data length slirp: use correct size while emulating IRC commands slirp: use correct size while emulating commands slirp: tftp: restrict relative path access Renzo Davoli (2): Add slirp_remove_guestfwd() Add slirp_add_unix() Samuel Thibault (14): ip_reass: explain why we should not always update the q pointer Merge branch 'comment' into 'master' Merge branch 'no-emu' into 'master' Fix bogus indent, no source change ip_reass: Fix use after free Merge branch 'reass2' into 'master' Make host receive broadcast packets arp: Allow 0.0.0.0 destination address Merge branch 'warnings' into 'master' Merge branch 'arp_0' into 'master' Merge branch 'broadcast' into 'master' tcp_emu: Fix oob access Merge branch 'oob' into 'master' Merge branch 'master' into 'master' Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-08-02slirp: update with CVE-2019-14378 fixMarc-André Lureau1-0/+0
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2019-05-09Update upstream slirpSamuel Thibault1-0/+0
Adds gitignore, README file, and fixes ident protocol parsing. Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-05-04Update slirp submoduleSamuel Thibault1-0/+0
To fix Windows on ARM.
2019-05-03build-sys: move slirp as git submodule projectMarc-André Lureau1-0/+0
The slirp project is now hosted on freedesktop at: https://gitlab.freedesktop.org/slirp. The libslirp source was extracted from qemu/slirp filtered through clang-format (available in project tree). The qemu slirp directory can be swapped by a git submodule. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20190424110041.8175-3-marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-03-07slirp: move sources to src/ subdirectoryMarc-André Lureau1-117/+0
Prepare for making slirp/ a standalone project. Remove some useless includes while at it. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20190212162524.31504-5-marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-03-07slirp: use libslirp migration codeMarc-André Lureau1-0/+8
slirp migration code uses QEMU vmstate so far, when building WITH_QEMU. Introduce slirp_state_{load,save,version}() functions to move the state saving handling to libslirp side. So far, the bitstream compatibility should remain equal with current QEMU, as this is effectively using the same code, with the same format etc. When libslirp is made standalone, we will need some mechanism to ensure bitstream compatibility regardless of the libslirp version installed. See the FIXME note in the code. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20190212162524.31504-3-marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-03-07slirp: adapt a subset of QEMU vmstate codeMarc-André Lureau1-0/+2
Add vmstate serialization code adapted from QEMU. Keep only the bits that are required for libslirp. Introduce a IStream/OStream interface to replace QEMU QFile abstraction. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20190212162524.31504-2-marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-02-07slirp: API is extern CMarc-André Lureau1-1/+8
Make it possible to use headers easily with C++ projects. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-02-07slirp: pass opaque to all callbacksMarc-André Lureau1-8/+8
This is friendlier for FFI bindings. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-02-07slirp: use polling callbacks, drop glib requirementMarc-André Lureau1-3/+14
It would be legitimate to use libslirp without glib. Let's add_poll/get_revents pair of callbacks to provide the same functionality. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-02-07slirp: replace global polling with per-instance & notifierMarc-André Lureau1-2/+2
Remove hard-coded dependency on slirp in main-loop, and use a "poll" notifier instead. The notifier is registered per slirp instance. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-02-07slirp: improve send_packet() callbackMarc-André Lureau1-4/+7
Use a more descriptive name for the callback. Reuse the SlirpWriteCb type. Wrap it to check that all data has been written. Return a ssize_t for potential error handling and data-loss reporting. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-02-07slirp: do not include qemu headers in libslirp.h public API headerMarc-André Lureau1-1/+11
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-02-07slirp: replace qemu_notify_event() with a callbackMarc-André Lureau1-0/+2
Introduce a SlirpCb callback to kick the main io-thread. Add an intermediary sodrop() function that will call SlirpCb.notify callback when sbdrop() returns true. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-02-07slirp: add unregister_poll_fd() callbackMarc-André Lureau1-0/+2
Add a counter-part to register_poll_fd() for completeness. (so far, register_poll_fd() is called only on struct socket fd) Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-02-07slirp: replace qemu_set_nonblock()Marc-André Lureau1-0/+2
Replace qemu_set_nonblock() with slirp_set_nonblock() qemu_set_nonblock() does some event registration with the main loop. Add a new callback register_poll_fd() for that reason. Always build the fd-register stub, to avoid #if WIN32. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-02-07slirp: add callbacks for timerMarc-André Lureau1-3/+11
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-02-07slirp: generalize guestfwd with a callback based approachMarc-André Lureau1-1/+5
Instead of calling into QEMU chardev directly, and mixing it with slirp_add_exec() handling, add a new function slirp_add_guestfwd() which takes a write callback. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-01-14slirp: add clock_get_ns() callbackMarc-André Lureau1-0/+2
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-01-14slirp: add a callback to log guest errorsMarc-André Lureau1-0/+2
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-01-14slirp: use a callback structure to interface with qemuMarc-André Lureau1-2/+11
This will bring slirp a bit forward to the state of an independent project. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-01-14slirp: remove Monitor dependency, return a string for infoMarc-André Lureau1-1/+1
There is nothing performance-sensitive in returning an allocated string for info, and handling the monitor_printf() on the caller side. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-01-14slirp: move internal function declarationsMarc-André Lureau1-3/+0
Clarify that those functions are internal to slirp. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-01-14slirp: use a dedicated field for chardev pointerMarc-André Lureau1-1/+1
Let's not mix command line and chardev pointers. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-01-14slirp: associate slirp_output callback with the Slirp contextMarc-André Lureau1-4/+5
Let's make the slirp interface a bit more library-like. Associate the slirp_output() with a Slirp context. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2018-10-21slirp: Implement RFC2132 TFTP server nameFam Zheng1-0/+1
This new usernet option can be used to add data for option 66 (tftp server name) in the BOOTP reply, which is useful in PXE based automatic OS install such as OpenBSD. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Tested-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2018-05-31slirp: Add domainname option to slirp's DHCP serverBenjamin Drung1-1/+1
This patch will allow the user to include the domainname option in replies from the built-in DHCP server. Signed-off-by: Benjamin Drung <benjamin.drung@profitbricks.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2018-01-14slirp: remove unnecessary struct declarationPhilippe Mathieu-Daudé1-1/+0
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2016-07-12Clean up ill-advised or unusual header guardsMarkus Armbruster1-2/+2
Cleaned up with scripts/clean-header-guards.pl. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net>
2016-07-03slirp: Support link-local DNS addressesSamuel Thibault1-1/+1
They look like fe80::%eth0 Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Reviewed-by: Thomas Huth <thuth@redhat.com> --- Changes since last submission: - fix windows build
2016-07-03slirp: Add dns6 resolutionSamuel Thibault1-0/+1
This makes get_dns_addr address family-agnostic, thus allowing to add the IPv6 case. Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Reviewed-by: Thomas Huth <thuth@redhat.com>
2016-04-01slirp: Allow disabling IPv4 or IPv6Samuel Thibault1-1/+2
Add ipv4 and ipv6 boolean options, so the user can setup IPv4-only and IPv6-only network environments. Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Reviewed-by: Thomas Huth <thuth@redhat.com>
2016-03-15qapi-schema, qemu-options & slirp: Adding Qemu options for IPv6 addressesYann Bordenave1-3/+5
This patch adds parameters to manage some new options in the qemu -net command. Slirp IPv6 address, network prefix, and DNS IPv6 address can be given in argument to the qemu command. Defaults parameters are respectively fec0::2, fec0::, /64 and fec0::3. Signed-off-by: Yann Bordenave <meow@meowstars.org> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Reviewed-by: Thomas Huth <thuth@redhat.com>
2013-09-17slirp: set mainloop timeout with more precise valueLiu Ping Fan1-2/+1
If slirp needs to emulate tcp timeout, then the timeout value for mainloop should be more precise, which is determined by slirp's fasttimo or slowtimo. Achieve this by swap the logic sequence of slirp_pollfds_fill and slirp_update_timeout. Signed-off-by: Liu Ping Fan <pingfank@linux.vnet.ibm.com> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
2013-02-21slirp: switch to GPollFDStefan Hajnoczi1-4/+2
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>
2012-11-15slirp: Add domain-search option to slirp's DHCP serverKlaus Stengel1-1/+2
This patch will allow the user to include the domain-search option in replies from the built-in DHCP server. The domain suffixes can be specified by adding dnssearch= entries to the "-net user" parameter. [Jan: tiny style adjustments] Signed-off-by: Klaus Stengel <Klaus.Stengel@asamnet.de> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
2012-08-01net: determine if packets can be sent before net queue deliver packetsZhi Yong Wu1-1/+0
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2012-04-26main_loop_wait: block indefinitelyStefano Stabellini1-0/+1
- remove qemu_calculate_timeout; - explicitly size timeout to uint32_t; - introduce slirp_update_timeout; - pass NULL as timeout argument to select in case timeout is the maximum value; Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: Paul Brook <paul@codesourcery.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-21main-loop: create main-loop.cPaolo Bonzini1-11/+0
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2011-09-09Fix include statements for qemu-common.hStefan Weil1-1/+1
* qemu-common.h is not a system include file, so it should be included with "" instead of <>. Otherwise incremental builds might fail because only local include files are checked for changes. * linux-user/syscall.c included the file twice. Cc: Riku Voipio <riku.voipio@iki.fi> Cc: Jan Kiszka <jan.kiszka@siemens.com> Acked-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2009-08-27slirp: Read host DNS config on demandEd Swierk1-0/+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>
2009-07-27slirp: Fix guestfwd for incoming dataJan Kiszka1-1/+1
Unless a virtual server address was explicitly defined (which is impossible with the legacy -net channel format), guestfwd did not properly forwarded host->guest packets. This patch fixes it. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-29slirp: Allocate/free stack instance dynamicallyJan Kiszka1-0/+1
Allocate the internal slirp state dynamically and provide and call slirp_cleanup to properly release it after use. This patch finally unbreaks slirp release and re-instantiation via host_net_* monitor commands. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
generated by cgit v1.1 at 2024-12-27 07:12:23 +0000