From 56f41de7372eb81e751e65942e7ec928e07fb67e Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Thu, 14 Feb 2019 18:35:49 +0100 Subject: vhost-net-user: add stubs for when no virtio-net device is present MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit hw/net/vhost_net.c needs functions that are declared in net/vhost-user.c: the vhost-user code is always compiled into QEMU, only the constructor net_init_vhost_user is unreachable. Also, net/vhost-user.c needs functions declared in hw/virtio/vhost-stub.c even if no virtio device exists. Break this dependency. First, add a minimal version of net/vhost-user.c, with no functionality and no dependency on vhost code. Second, #ifdef out the calls back to net/vhost-user.c from hw/net/vhost_net.c. While at it, this patch fixes the CONFIG_VHOST_NET_USE*D* typo. Reviewed-by: Philippe Mathieu-Daudé Message-Id: <1543851204-41186-3-git-send-email-pbonzini@redhat.com> Reviewed-by: Thomas Huth Signed-off-by: Paolo Bonzini Message-Id: <1550165756-21617-3-git-send-email-pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- configure | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'configure') diff --git a/configure b/configure index a61682c..d54136c 100755 --- a/configure +++ b/configure @@ -6590,7 +6590,7 @@ if test "$vhost_scsi" = "yes" ; then echo "CONFIG_VHOST_SCSI=y" >> $config_host_mak fi if test "$vhost_net" = "yes" && test "$vhost_user" = "yes"; then - echo "CONFIG_VHOST_NET_USED=y" >> $config_host_mak + echo "CONFIG_VHOST_NET_USER=y" >> $config_host_mak fi if test "$vhost_crypto" = "yes" ; then echo "CONFIG_VHOST_CRYPTO=y" >> $config_host_mak -- cgit v1.1 From af3bba761a1208c8515bcc72fc48d0f9045d040c Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Thu, 14 Feb 2019 18:35:52 +0100 Subject: vhost-net: compile it on all targets that have virtio-net. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This shows a preexisting bug: if a KVM target did not have virtio-net enabled, it would fail with undefined symbols when vhost was enabled. This must now be fixed, lest targets that have no virtio-net fail to compile. Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Paolo Bonzini Reviewed-by: Thomas Huth Message-Id: <1543851204-41186-5-git-send-email-pbonzini@redhat.com> Message-Id: <1550165756-21617-6-git-send-email-pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- configure | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) (limited to 'configure') diff --git a/configure b/configure index d54136c..d2cf895 100755 --- a/configure +++ b/configure @@ -6589,7 +6589,10 @@ fi if test "$vhost_scsi" = "yes" ; then echo "CONFIG_VHOST_SCSI=y" >> $config_host_mak fi -if test "$vhost_net" = "yes" && test "$vhost_user" = "yes"; then +if test "$vhost_net" = "yes" ; then + echo "CONFIG_VHOST_NET=y" >> $config_host_mak +fi +if test "$vhost_net_user" = "yes" ; then echo "CONFIG_VHOST_NET_USER=y" >> $config_host_mak fi if test "$vhost_crypto" = "yes" ; then @@ -7368,12 +7371,6 @@ if supported_xen_target $target; then fi if supported_kvm_target $target; then echo "CONFIG_KVM=y" >> $config_target_mak - if test "$vhost_net" = "yes" ; then - echo "CONFIG_VHOST_NET=y" >> $config_target_mak - if test "$vhost_user" = "yes" ; then - echo "CONFIG_VHOST_USER_NET_TEST_$target_name=y" >> $config_host_mak - fi - fi fi if supported_hax_target $target; then echo "CONFIG_HAX=y" >> $config_target_mak -- cgit v1.1 From 299e6f19b3e285f3ab00b780e3b48f5e58b5d4ed Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Thu, 14 Feb 2019 18:35:53 +0100 Subject: vhost-net: revamp configure logic MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Detect all invalid configurations (e.g. mingw32 with vhost-user, non-Linux with vhost-kernel). As a collateral benefit, all vhost-kernel backends can be now disabled if one wants to reduce the attack surface. Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Paolo Bonzini Reviewed-by: Thomas Huth Message-Id: <1543851204-41186-6-git-send-email-pbonzini@redhat.com> Message-Id: <1550165756-21617-7-git-send-email-pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- configure | 89 ++++++++++++++++++++++++++++++++++++++++++--------------------- 1 file changed, 59 insertions(+), 30 deletions(-) (limited to 'configure') diff --git a/configure b/configure index d2cf895..9c49c97 100755 --- a/configure +++ b/configure @@ -368,10 +368,10 @@ libattr="" xfs="" tcg="yes" membarrier="" -vhost_net="no" -vhost_crypto="no" -vhost_scsi="no" -vhost_vsock="no" +vhost_net="" +vhost_crypto="" +vhost_scsi="" +vhost_vsock="" vhost_user="" kvm="no" hax="no" @@ -782,6 +782,7 @@ case $targetos in MINGW32*) mingw32="yes" hax="yes" + vhost_user="no" audio_possible_drivers="dsound sdl" if check_include dsound.h; then audio_drv_list="dsound" @@ -883,10 +884,6 @@ Linux) linux="yes" linux_user="yes" kvm="yes" - vhost_net="yes" - vhost_crypto="yes" - vhost_scsi="yes" - vhost_vsock="yes" QEMU_INCLUDES="-I\$(SRC_PATH)/linux-headers -I$PWD/linux-headers $QEMU_INCLUDES" supported_os="yes" libudev="yes" @@ -1262,11 +1259,7 @@ for opt do ;; --disable-vhost-crypto) vhost_crypto="no" ;; - --enable-vhost-crypto) - vhost_crypto="yes" - if test "$mingw32" = "yes"; then - error_exit "vhost-crypto isn't available on win32" - fi + --enable-vhost-crypto) vhost_crypto="yes" ;; --disable-vhost-scsi) vhost_scsi="no" ;; @@ -1471,11 +1464,11 @@ for opt do ;; --disable-vhost-user) vhost_user="no" ;; - --enable-vhost-user) - vhost_user="yes" - if test "$mingw32" = "yes"; then - error_exit "vhost-user isn't available on win32" - fi + --enable-vhost-user) vhost_user="yes" + ;; + --disable-vhost-kernel) vhost_kernel="no" + ;; + --enable-vhost-kernel) vhost_kernel="yes" ;; --disable-capstone) capstone="no" ;; @@ -1507,14 +1500,6 @@ for opt do esac done -if test "$vhost_user" = ""; then - if test "$mingw32" = "yes"; then - vhost_user="no" - else - vhost_user="yes" - fi -fi - case "$cpu" in ppc) CPU_CFLAGS="-m32" @@ -1737,8 +1722,12 @@ disabled with --disable-FEATURE, default is enabled if available: linux-aio Linux AIO support cap-ng libcap-ng support attr attr and xattr support - vhost-net vhost-net acceleration support - vhost-crypto vhost-crypto acceleration support + vhost-net vhost-net kernel acceleration support + vhost-vsock virtio sockets device support + vhost-scsi vhost-scsi kernel target support + vhost-crypto vhost-user-crypto backend support + vhost-kernel vhost kernel backend support + vhost-user vhost-user backend support spice spice rbd rados block device (rbd) libiscsi iscsi support @@ -1764,7 +1753,6 @@ disabled with --disable-FEATURE, default is enabled if available: jemalloc jemalloc support avx2 AVX2 optimization support replication replication support - vhost-vsock virtio sockets device support opengl opengl support virglrenderer virgl rendering support xfsctl xfsctl support @@ -1781,7 +1769,6 @@ disabled with --disable-FEATURE, default is enabled if available: parallels parallels image format support sheepdog sheepdog block driver support crypto-afalg Linux AF_ALG crypto backend driver - vhost-user vhost-user support capstone capstone disassembler support debug-mutex mutex debugging support libpmem libpmem support @@ -2171,6 +2158,45 @@ else l2tpv3=no fi +######################################### +# vhost interdependencies and host support + +# vhost backends +test "$vhost_user" = "" && vhost_user=yes +if test "$vhost_user" = "yes" && test "$mingw32" = "yes"; then + error_exit "vhost-user isn't available on win32" +fi +test "$vhost_kernel" = "" && vhost_kernel=$linux +if test "$vhost_kernel" = "yes" && test "$linux" != "yes"; then + error_exit "vhost-kernel is only available on Linux" +fi + +# vhost-kernel devices +test "$vhost_scsi" = "" && vhost_scsi=$vhost_kernel +if test "$vhost_scsi" = "yes" && test "$vhost_kernel" != "yes"; then + error_exit "--enable-vhost-scsi requires --enable-vhost-kernel" +fi +test "$vhost_vsock" = "" && vhost_vsock=$vhost_kernel +if test "$vhost_vsock" = "yes" && test "$vhost_kernel" != "yes"; then + error_exit "--enable-vhost-vsock requires --enable-vhost-kernel" +fi + +# vhost-user backends +test "$vhost_net_user" = "" && vhost_net_user=$vhost_user +if test "$vhost_net_user" = "yes" && test "$vhost_user" = "no"; then + error_exit "--enable-vhost-net-user requires --enable-vhost-user" +fi +test "$vhost_crypto" = "" && vhost_crypto=$vhost_user +if test "$vhost_crypto" = "yes" && test "$vhost_user" = "no"; then + error_exit "--enable-vhost-crypto requires --enable-vhost-user" +fi + +# OR the vhost-kernel and vhost-user values for simplicity +if test "$vhost_net" = ""; then + test "$vhost_net_user" = "yes" && vhost_net=yes + test "$vhost_kernel" = "yes" && vhost_net=yes +fi + ########################################## # MinGW / Mingw-w64 localtime_r/gmtime_r check @@ -6601,6 +6627,9 @@ fi if test "$vhost_vsock" = "yes" ; then echo "CONFIG_VHOST_VSOCK=y" >> $config_host_mak fi +if test "$vhost_kernel" = "yes" ; then + echo "CONFIG_VHOST_KERNEL=y" >> $config_host_mak +fi if test "$vhost_user" = "yes" ; then echo "CONFIG_VHOST_USER=y" >> $config_host_mak fi -- cgit v1.1