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Wed, 31 May 2023 20:19:20 -0700 (PDT) From: Akihiko Odaki To: Cc: Mauro Matteo Cascella , P J P , Alexander Bulekov , Dmitry Fleytman , Beniamino Galvani , Peter Maydell , Strahinja Jankovic , Jason Wang , "Edgar E. Iglesias" , Alistair Francis , Stefan Weil , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Andrew Jeffery , Joel Stanley , Richard Henderson , Helge Deller , Sriram Yagnaraman , Thomas Huth , Aleksandar Rikalo , Subbaraya Sundeep , Jan Kiszka , Tyrone Ting , Hao Wu , Max Filippov , Jiri Pirko , Daniel Henrique Barboza , David Gibson , Greg Kurz , Harsh Prateek Bora , Sven Schnelle , "Michael S. Tsirkin" , Stefano Stabellini , Anthony Perard , Paul Durrant , Rob Herring , Gerd Hoffmann , qemu-arm@nongnu.org, qemu-devel@nongnu.org, qemu-ppc@nongnu.org, xen-devel@lists.xenproject.org, Akihiko Odaki Subject: [PATCH v2 1/2] net: Provide MemReentrancyGuard * to qemu_new_nic() Date: Thu, 1 Jun 2023 12:18:58 +0900 Message-Id: <20230601031859.7115-2-akihiko.odaki@daynix.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230601031859.7115-1-akihiko.odaki@daynix.com> References: <20230601031859.7115-1-akihiko.odaki@daynix.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @daynix-com.20221208.gappssmtp.com) X-ZM-MESSAGEID: 1685589600623100001 Content-Type: text/plain; charset="utf-8" Recently MemReentrancyGuard was added to DeviceState to record that the device is engaging in I/O. The network device backend needs to update it when delivering a packet to a device. In preparation for such a change, add MemReentrancyGuard * as a parameter of qemu_new_nic(). Signed-off-by: Akihiko Odaki Reviewed-by: Alexander Bulekov --- include/net/net.h | 1 + hw/net/allwinner-sun8i-emac.c | 3 ++- hw/net/allwinner_emac.c | 3 ++- hw/net/cadence_gem.c | 3 ++- hw/net/dp8393x.c | 3 ++- hw/net/e1000.c | 3 ++- hw/net/e1000e.c | 2 +- hw/net/eepro100.c | 4 +++- hw/net/etraxfs_eth.c | 3 ++- hw/net/fsl_etsec/etsec.c | 3 ++- hw/net/ftgmac100.c | 3 ++- hw/net/i82596.c | 2 +- hw/net/igb.c | 2 +- hw/net/imx_fec.c | 2 +- hw/net/lan9118.c | 3 ++- hw/net/mcf_fec.c | 3 ++- hw/net/mipsnet.c | 3 ++- hw/net/msf2-emac.c | 3 ++- hw/net/mv88w8618_eth.c | 3 ++- hw/net/ne2000-isa.c | 3 ++- hw/net/ne2000-pci.c | 3 ++- hw/net/npcm7xx_emc.c | 3 ++- hw/net/opencores_eth.c | 3 ++- hw/net/pcnet.c | 3 ++- hw/net/rocker/rocker_fp.c | 4 ++-- hw/net/rtl8139.c | 3 ++- hw/net/smc91c111.c | 3 ++- hw/net/spapr_llan.c | 3 ++- hw/net/stellaris_enet.c | 3 ++- hw/net/sungem.c | 2 +- hw/net/sunhme.c | 3 ++- hw/net/tulip.c | 3 ++- hw/net/virtio-net.c | 6 ++++-- hw/net/vmxnet3.c | 2 +- hw/net/xen_nic.c | 4 ++-- hw/net/xgmac.c | 3 ++- hw/net/xilinx_axienet.c | 3 ++- hw/net/xilinx_ethlite.c | 3 ++- hw/usb/dev-network.c | 3 ++- net/net.c | 1 + 40 files changed, 75 insertions(+), 41 deletions(-) diff --git a/include/net/net.h b/include/net/net.h index 1448d00afb..a7d8deaccb 100644 --- a/include/net/net.h +++ b/include/net/net.h @@ -157,6 +157,7 @@ NICState *qemu_new_nic(NetClientInfo *info, NICConf *conf, const char *model, const char *name, + MemReentrancyGuard *reentrancy_guard, void *opaque); void qemu_del_nic(NICState *nic); NetClientState *qemu_get_subqueue(NICState *nic, int queue_index); diff --git a/hw/net/allwinner-sun8i-emac.c b/hw/net/allwinner-sun8i-emac.c index fac4405f45..cc350d40e5 100644 --- a/hw/net/allwinner-sun8i-emac.c +++ b/hw/net/allwinner-sun8i-emac.c @@ -824,7 +824,8 @@ static void allwinner_sun8i_emac_realize(DeviceState *d= ev, Error **errp) =20 qemu_macaddr_default_if_unset(&s->conf.macaddr); s->nic =3D qemu_new_nic(&net_allwinner_sun8i_emac_info, &s->conf, - object_get_typename(OBJECT(dev)), dev->id, s); + object_get_typename(OBJECT(dev)), dev->id, + &dev->mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); } =20 diff --git a/hw/net/allwinner_emac.c b/hw/net/allwinner_emac.c index 372e5b66da..e10965de14 100644 --- a/hw/net/allwinner_emac.c +++ b/hw/net/allwinner_emac.c @@ -453,7 +453,8 @@ static void aw_emac_realize(DeviceState *dev, Error **e= rrp) =20 qemu_macaddr_default_if_unset(&s->conf.macaddr); s->nic =3D qemu_new_nic(&net_aw_emac_info, &s->conf, - object_get_typename(OBJECT(dev)), dev->id, s); + object_get_typename(OBJECT(dev)), dev->id, + &dev->mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); =20 fifo8_create(&s->rx_fifo, RX_FIFO_SIZE); diff --git a/hw/net/cadence_gem.c b/hw/net/cadence_gem.c index 42ea2411a2..a7bce1c120 100644 --- a/hw/net/cadence_gem.c +++ b/hw/net/cadence_gem.c @@ -1633,7 +1633,8 @@ static void gem_realize(DeviceState *dev, Error **err= p) qemu_macaddr_default_if_unset(&s->conf.macaddr); =20 s->nic =3D qemu_new_nic(&net_gem_info, &s->conf, - object_get_typename(OBJECT(dev)), dev->id, s); + object_get_typename(OBJECT(dev)), dev->id, + &dev->mem_reentrancy_guard, s); =20 if (s->jumbo_max_len > MAX_FRAME_SIZE) { error_setg(errp, "jumbo-max-len is greater than %d", diff --git a/hw/net/dp8393x.c b/hw/net/dp8393x.c index 45b954e46c..abfcc6f69f 100644 --- a/hw/net/dp8393x.c +++ b/hw/net/dp8393x.c @@ -943,7 +943,8 @@ static void dp8393x_realize(DeviceState *dev, Error **e= rrp) "dp8393x-regs", SONIC_REG_COUNT << s->it_shift); =20 s->nic =3D qemu_new_nic(&net_dp83932_info, &s->conf, - object_get_typename(OBJECT(dev)), dev->id, s); + object_get_typename(OBJECT(dev)), dev->id, + &dev->mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); =20 s->watchdog =3D timer_new_ns(QEMU_CLOCK_VIRTUAL, dp8393x_watchdog, s); diff --git a/hw/net/e1000.c b/hw/net/e1000.c index 4dc4dd7704..7581378226 100644 --- a/hw/net/e1000.c +++ b/hw/net/e1000.c @@ -1696,7 +1696,8 @@ static void pci_e1000_realize(PCIDevice *pci_dev, Err= or **errp) macaddr); =20 d->nic =3D qemu_new_nic(&net_e1000_info, &d->conf, - object_get_typename(OBJECT(d)), dev->id, d); + object_get_typename(OBJECT(d)), dev->id, + &dev->mem_reentrancy_guard, d); =20 qemu_format_nic_info_str(qemu_get_queue(d->nic), macaddr); =20 diff --git a/hw/net/e1000e.c b/hw/net/e1000e.c index c3848797b8..e41a6c1038 100644 --- a/hw/net/e1000e.c +++ b/hw/net/e1000e.c @@ -320,7 +320,7 @@ e1000e_init_net_peer(E1000EState *s, PCIDevice *pci_dev= , uint8_t *macaddr) int i; =20 s->nic =3D qemu_new_nic(&net_e1000e_info, &s->conf, - object_get_typename(OBJECT(s)), dev->id, s); + object_get_typename(OBJECT(s)), dev->id, &dev->mem_reentrancy_guar= d, s); =20 s->core.max_queue_num =3D s->conf.peers.queues ? s->conf.peers.queues = - 1 : 0; =20 diff --git a/hw/net/eepro100.c b/hw/net/eepro100.c index dc07984ae9..e2b03b787d 100644 --- a/hw/net/eepro100.c +++ b/hw/net/eepro100.c @@ -1874,7 +1874,9 @@ static void e100_nic_realize(PCIDevice *pci_dev, Erro= r **errp) nic_reset(s); =20 s->nic =3D qemu_new_nic(&net_eepro100_info, &s->conf, - object_get_typename(OBJECT(pci_dev)), pci_dev->q= dev.id, s); + object_get_typename(OBJECT(pci_dev)), + pci_dev->qdev.id, + &pci_dev->qdev.mem_reentrancy_guard, s); =20 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); TRACE(OTHER, logout("%s\n", qemu_get_queue(s->nic)->info_str)); diff --git a/hw/net/etraxfs_eth.c b/hw/net/etraxfs_eth.c index 1b82aec794..ba57a978d1 100644 --- a/hw/net/etraxfs_eth.c +++ b/hw/net/etraxfs_eth.c @@ -618,7 +618,8 @@ static void etraxfs_eth_realize(DeviceState *dev, Error= **errp) =20 qemu_macaddr_default_if_unset(&s->conf.macaddr); s->nic =3D qemu_new_nic(&net_etraxfs_info, &s->conf, - object_get_typename(OBJECT(s)), dev->id, s); + object_get_typename(OBJECT(s)), dev->id, + &dev->mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); =20 s->phy.read =3D tdk_read; diff --git a/hw/net/fsl_etsec/etsec.c b/hw/net/fsl_etsec/etsec.c index 798ea33d08..00315f305d 100644 --- a/hw/net/fsl_etsec/etsec.c +++ b/hw/net/fsl_etsec/etsec.c @@ -391,7 +391,8 @@ static void etsec_realize(DeviceState *dev, Error **err= p) eTSEC *etsec =3D ETSEC_COMMON(dev); =20 etsec->nic =3D qemu_new_nic(&net_etsec_info, &etsec->conf, - object_get_typename(OBJECT(dev)), dev->id, e= tsec); + object_get_typename(OBJECT(dev)), dev->id, + &dev->mem_reentrancy_guard, etsec); qemu_format_nic_info_str(qemu_get_queue(etsec->nic), etsec->conf.macad= dr.a); =20 etsec->ptimer =3D ptimer_init(etsec_timer_hit, etsec, PTIMER_POLICY_LE= GACY); diff --git a/hw/net/ftgmac100.c b/hw/net/ftgmac100.c index d3bf14be53..be2cf63c08 100644 --- a/hw/net/ftgmac100.c +++ b/hw/net/ftgmac100.c @@ -1118,7 +1118,8 @@ static void ftgmac100_realize(DeviceState *dev, Error= **errp) qemu_macaddr_default_if_unset(&s->conf.macaddr); =20 s->nic =3D qemu_new_nic(&net_ftgmac100_info, &s->conf, - object_get_typename(OBJECT(dev)), dev->id, s); + object_get_typename(OBJECT(dev)), dev->id, + &dev->mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); } =20 diff --git a/hw/net/i82596.c b/hw/net/i82596.c index ec21e2699a..dc64246f75 100644 --- a/hw/net/i82596.c +++ b/hw/net/i82596.c @@ -743,7 +743,7 @@ void i82596_common_init(DeviceState *dev, I82596State *= s, NetClientInfo *info) qemu_macaddr_default_if_unset(&s->conf.macaddr); } s->nic =3D qemu_new_nic(info, &s->conf, object_get_typename(OBJECT(dev= )), - dev->id, s); + dev->id, &dev->mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); =20 if (USE_TIMER) { diff --git a/hw/net/igb.c b/hw/net/igb.c index 1c989d7677..141bc56d79 100644 --- a/hw/net/igb.c +++ b/hw/net/igb.c @@ -315,7 +315,7 @@ igb_init_net_peer(IGBState *s, PCIDevice *pci_dev, uint= 8_t *macaddr) int i; =20 s->nic =3D qemu_new_nic(&net_igb_info, &s->conf, - object_get_typename(OBJECT(s)), dev->id, s); + object_get_typename(OBJECT(s)), dev->id, &dev->mem_reentrancy_guar= d, s); =20 s->core.max_queue_num =3D s->conf.peers.queues ? s->conf.peers.queues = - 1 : 0; =20 diff --git a/hw/net/imx_fec.c b/hw/net/imx_fec.c index 5d1f1f104c..6881e3e4f0 100644 --- a/hw/net/imx_fec.c +++ b/hw/net/imx_fec.c @@ -1334,7 +1334,7 @@ static void imx_eth_realize(DeviceState *dev, Error *= *errp) =20 s->nic =3D qemu_new_nic(&imx_eth_net_info, &s->conf, object_get_typename(OBJECT(dev)), - dev->id, s); + dev->id, &dev->mem_reentrancy_guard, s); =20 qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); } diff --git a/hw/net/lan9118.c b/hw/net/lan9118.c index e5c4af182d..cf7b8c897a 100644 --- a/hw/net/lan9118.c +++ b/hw/net/lan9118.c @@ -1361,7 +1361,8 @@ static void lan9118_realize(DeviceState *dev, Error *= *errp) qemu_macaddr_default_if_unset(&s->conf.macaddr); =20 s->nic =3D qemu_new_nic(&net_lan9118_info, &s->conf, - object_get_typename(OBJECT(dev)), dev->id, s); + object_get_typename(OBJECT(dev)), dev->id, + &dev->mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); s->eeprom[0] =3D 0xa5; for (i =3D 0; i < 6; i++) { diff --git a/hw/net/mcf_fec.c b/hw/net/mcf_fec.c index 8aa27bd322..57dd49abea 100644 --- a/hw/net/mcf_fec.c +++ b/hw/net/mcf_fec.c @@ -643,7 +643,8 @@ static void mcf_fec_realize(DeviceState *dev, Error **e= rrp) mcf_fec_state *s =3D MCF_FEC_NET(dev); =20 s->nic =3D qemu_new_nic(&net_mcf_fec_info, &s->conf, - object_get_typename(OBJECT(dev)), dev->id, s); + object_get_typename(OBJECT(dev)), dev->id, + &dev->mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); } =20 diff --git a/hw/net/mipsnet.c b/hw/net/mipsnet.c index 2ade72dea0..8e925de867 100644 --- a/hw/net/mipsnet.c +++ b/hw/net/mipsnet.c @@ -255,7 +255,8 @@ static void mipsnet_realize(DeviceState *dev, Error **e= rrp) sysbus_init_irq(sbd, &s->irq); =20 s->nic =3D qemu_new_nic(&net_mipsnet_info, &s->conf, - object_get_typename(OBJECT(dev)), dev->id, s); + object_get_typename(OBJECT(dev)), dev->id, + &dev->mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); } =20 diff --git a/hw/net/msf2-emac.c b/hw/net/msf2-emac.c index db3a04deb1..145a5e46ab 100644 --- a/hw/net/msf2-emac.c +++ b/hw/net/msf2-emac.c @@ -530,7 +530,8 @@ static void msf2_emac_realize(DeviceState *dev, Error *= *errp) =20 qemu_macaddr_default_if_unset(&s->conf.macaddr); s->nic =3D qemu_new_nic(&net_msf2_emac_info, &s->conf, - object_get_typename(OBJECT(dev)), dev->id, s); + object_get_typename(OBJECT(dev)), dev->id, + &dev->mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); } =20 diff --git a/hw/net/mv88w8618_eth.c b/hw/net/mv88w8618_eth.c index ef30b0d4a6..2185f1131a 100644 --- a/hw/net/mv88w8618_eth.c +++ b/hw/net/mv88w8618_eth.c @@ -350,7 +350,8 @@ static void mv88w8618_eth_realize(DeviceState *dev, Err= or **errp) =20 address_space_init(&s->dma_as, s->dma_mr, "emac-dma"); s->nic =3D qemu_new_nic(&net_mv88w8618_info, &s->conf, - object_get_typename(OBJECT(dev)), dev->id, s); + object_get_typename(OBJECT(dev)), dev->id, + &dev->mem_reentrancy_guard, s); } =20 static const VMStateDescription mv88w8618_eth_vmsd =3D { diff --git a/hw/net/ne2000-isa.c b/hw/net/ne2000-isa.c index 6ced6775ff..a79f7fad1f 100644 --- a/hw/net/ne2000-isa.c +++ b/hw/net/ne2000-isa.c @@ -74,7 +74,8 @@ static void isa_ne2000_realizefn(DeviceState *dev, Error = **errp) ne2000_reset(s); =20 s->nic =3D qemu_new_nic(&net_ne2000_isa_info, &s->c, - object_get_typename(OBJECT(dev)), dev->id, s); + object_get_typename(OBJECT(dev)), dev->id, + &dev->mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->c.macaddr.a); } =20 diff --git a/hw/net/ne2000-pci.c b/hw/net/ne2000-pci.c index edc6689d33..fee93c6ec0 100644 --- a/hw/net/ne2000-pci.c +++ b/hw/net/ne2000-pci.c @@ -71,7 +71,8 @@ static void pci_ne2000_realize(PCIDevice *pci_dev, Error = **errp) =20 s->nic =3D qemu_new_nic(&net_ne2000_info, &s->c, object_get_typename(OBJECT(pci_dev)), - pci_dev->qdev.id, s); + pci_dev->qdev.id, + &pci_dev->qdev.mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->c.macaddr.a); } =20 diff --git a/hw/net/npcm7xx_emc.c b/hw/net/npcm7xx_emc.c index 8156f701b0..1d4e8f59f3 100644 --- a/hw/net/npcm7xx_emc.c +++ b/hw/net/npcm7xx_emc.c @@ -821,7 +821,8 @@ static void npcm7xx_emc_realize(DeviceState *dev, Error= **errp) =20 qemu_macaddr_default_if_unset(&emc->conf.macaddr); emc->nic =3D qemu_new_nic(&net_npcm7xx_emc_info, &emc->conf, - object_get_typename(OBJECT(dev)), dev->id, emc= ); + object_get_typename(OBJECT(dev)), dev->id, + &dev->mem_reentrancy_guard, emc); qemu_format_nic_info_str(qemu_get_queue(emc->nic), emc->conf.macaddr.a= ); } =20 diff --git a/hw/net/opencores_eth.c b/hw/net/opencores_eth.c index 0b3dc3146e..f96d6ea2cc 100644 --- a/hw/net/opencores_eth.c +++ b/hw/net/opencores_eth.c @@ -732,7 +732,8 @@ static void sysbus_open_eth_realize(DeviceState *dev, E= rror **errp) sysbus_init_irq(sbd, &s->irq); =20 s->nic =3D qemu_new_nic(&net_open_eth_info, &s->conf, - object_get_typename(OBJECT(s)), dev->id, s); + object_get_typename(OBJECT(s)), dev->id, + &dev->mem_reentrancy_guard, s); } =20 static void qdev_open_eth_reset(DeviceState *dev) diff --git a/hw/net/pcnet.c b/hw/net/pcnet.c index d456094575..1627f6939c 100644 --- a/hw/net/pcnet.c +++ b/hw/net/pcnet.c @@ -1718,7 +1718,8 @@ void pcnet_common_init(DeviceState *dev, PCNetState *= s, NetClientInfo *info) s->poll_timer =3D timer_new_ns(QEMU_CLOCK_VIRTUAL, pcnet_poll_timer, s= ); =20 qemu_macaddr_default_if_unset(&s->conf.macaddr); - s->nic =3D qemu_new_nic(info, &s->conf, object_get_typename(OBJECT(dev= )), dev->id, s); + s->nic =3D qemu_new_nic(info, &s->conf, object_get_typename(OBJECT(dev= )), + dev->id, &dev->mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); =20 /* Initialize the PROM */ diff --git a/hw/net/rocker/rocker_fp.c b/hw/net/rocker/rocker_fp.c index cbeed65bd5..0d21948ada 100644 --- a/hw/net/rocker/rocker_fp.c +++ b/hw/net/rocker/rocker_fp.c @@ -241,8 +241,8 @@ FpPort *fp_port_alloc(Rocker *r, char *sw_name, port->conf.bootindex =3D -1; port->conf.peers =3D *peers; =20 - port->nic =3D qemu_new_nic(&fp_port_info, &port->conf, - sw_name, NULL, port); + port->nic =3D qemu_new_nic(&fp_port_info, &port->conf, sw_name, NULL, + &DEVICE(r)->mem_reentrancy_guard, port); qemu_format_nic_info_str(qemu_get_queue(port->nic), port->conf.macaddr.a); =20 diff --git a/hw/net/rtl8139.c b/hw/net/rtl8139.c index 5a5aaf868d..f4df03af71 100644 --- a/hw/net/rtl8139.c +++ b/hw/net/rtl8139.c @@ -3397,7 +3397,8 @@ static void pci_rtl8139_realize(PCIDevice *dev, Error= **errp) s->eeprom.contents[9] =3D s->conf.macaddr.a[4] | s->conf.macaddr.a[5] = << 8; =20 s->nic =3D qemu_new_nic(&net_rtl8139_info, &s->conf, - object_get_typename(OBJECT(dev)), d->id, s); + object_get_typename(OBJECT(dev)), d->id, + &d->mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); =20 s->cplus_txbuffer =3D NULL; diff --git a/hw/net/smc91c111.c b/hw/net/smc91c111.c index ad778cd8fc..4eda971ef3 100644 --- a/hw/net/smc91c111.c +++ b/hw/net/smc91c111.c @@ -783,7 +783,8 @@ static void smc91c111_realize(DeviceState *dev, Error *= *errp) sysbus_init_irq(sbd, &s->irq); qemu_macaddr_default_if_unset(&s->conf.macaddr); s->nic =3D qemu_new_nic(&net_smc91c111_info, &s->conf, - object_get_typename(OBJECT(dev)), dev->id, s); + object_get_typename(OBJECT(dev)), dev->id, + &dev->mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); /* ??? Save/restore. */ } diff --git a/hw/net/spapr_llan.c b/hw/net/spapr_llan.c index a6876a936d..475d5f3a34 100644 --- a/hw/net/spapr_llan.c +++ b/hw/net/spapr_llan.c @@ -325,7 +325,8 @@ static void spapr_vlan_realize(SpaprVioDevice *sdev, Er= ror **errp) memcpy(&dev->perm_mac.a, &dev->nicconf.macaddr.a, sizeof(dev->perm_mac= .a)); =20 dev->nic =3D qemu_new_nic(&net_spapr_vlan_info, &dev->nicconf, - object_get_typename(OBJECT(sdev)), sdev->qdev.= id, dev); + object_get_typename(OBJECT(sdev)), sdev->qdev.= id, + &sdev->qdev.mem_reentrancy_guard, dev); qemu_format_nic_info_str(qemu_get_queue(dev->nic), dev->nicconf.macadd= r.a); =20 dev->rxp_timer =3D timer_new_us(QEMU_CLOCK_VIRTUAL, spapr_vlan_flush_r= x_queue, diff --git a/hw/net/stellaris_enet.c b/hw/net/stellaris_enet.c index 8dd60783d8..6768a6912f 100644 --- a/hw/net/stellaris_enet.c +++ b/hw/net/stellaris_enet.c @@ -492,7 +492,8 @@ static void stellaris_enet_realize(DeviceState *dev, Er= ror **errp) qemu_macaddr_default_if_unset(&s->conf.macaddr); =20 s->nic =3D qemu_new_nic(&net_stellaris_enet_info, &s->conf, - object_get_typename(OBJECT(dev)), dev->id, s); + object_get_typename(OBJECT(dev)), dev->id, + &dev->mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); } =20 diff --git a/hw/net/sungem.c b/hw/net/sungem.c index eb01520790..347ccdd19d 100644 --- a/hw/net/sungem.c +++ b/hw/net/sungem.c @@ -1361,7 +1361,7 @@ static void sungem_realize(PCIDevice *pci_dev, Error = **errp) qemu_macaddr_default_if_unset(&s->conf.macaddr); s->nic =3D qemu_new_nic(&net_sungem_info, &s->conf, object_get_typename(OBJECT(dev)), - dev->id, s); + dev->id, &dev->mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); } diff --git a/hw/net/sunhme.c b/hw/net/sunhme.c index 1f3d8011ae..82e38a428a 100644 --- a/hw/net/sunhme.c +++ b/hw/net/sunhme.c @@ -892,7 +892,8 @@ static void sunhme_realize(PCIDevice *pci_dev, Error **= errp) =20 qemu_macaddr_default_if_unset(&s->conf.macaddr); s->nic =3D qemu_new_nic(&net_sunhme_info, &s->conf, - object_get_typename(OBJECT(d)), d->id, s); + object_get_typename(OBJECT(d)), d->id, + &d->mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); } =20 diff --git a/hw/net/tulip.c b/hw/net/tulip.c index 915e5fb595..1f8e45de5e 100644 --- a/hw/net/tulip.c +++ b/hw/net/tulip.c @@ -983,7 +983,8 @@ static void pci_tulip_realize(PCIDevice *pci_dev, Error= **errp) =20 s->nic =3D qemu_new_nic(&net_tulip_info, &s->c, object_get_typename(OBJECT(pci_dev)), - pci_dev->qdev.id, s); + pci_dev->qdev.id, + &pci_dev->qdev.mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->c.macaddr.a); } =20 diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index ed9f240bfd..9728158b72 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -3696,10 +3696,12 @@ static void virtio_net_device_realize(DeviceState *= dev, Error **errp) * Happen when virtio_net_set_netclient_name has been called. */ n->nic =3D qemu_new_nic(&net_virtio_info, &n->nic_conf, - n->netclient_type, n->netclient_name, n); + n->netclient_type, n->netclient_name, + &dev->mem_reentrancy_guard, n); } else { n->nic =3D qemu_new_nic(&net_virtio_info, &n->nic_conf, - object_get_typename(OBJECT(dev)), dev->id, n= ); + object_get_typename(OBJECT(dev)), dev->id, + &dev->mem_reentrancy_guard, n); } =20 for (i =3D 0; i < n->max_queue_pairs; i++) { diff --git a/hw/net/vmxnet3.c b/hw/net/vmxnet3.c index 18b9edfdb2..5051818fe4 100644 --- a/hw/net/vmxnet3.c +++ b/hw/net/vmxnet3.c @@ -2083,7 +2083,7 @@ static void vmxnet3_net_init(VMXNET3State *s) =20 s->nic =3D qemu_new_nic(&net_vmxnet3_info, &s->conf, object_get_typename(OBJECT(s)), - d->id, s); + d->id, &d->mem_reentrancy_guard, s); =20 s->peer_has_vhdr =3D vmxnet3_peer_has_vnet_hdr(s); s->tx_sop =3D true; diff --git a/hw/net/xen_nic.c b/hw/net/xen_nic.c index 9bbf6599fc..e735f79c5b 100644 --- a/hw/net/xen_nic.c +++ b/hw/net/xen_nic.c @@ -293,8 +293,8 @@ static int net_init(struct XenLegacyDevice *xendev) return -1; } =20 - netdev->nic =3D qemu_new_nic(&net_xen_info, &netdev->conf, - "xen", NULL, netdev); + netdev->nic =3D qemu_new_nic(&net_xen_info, &netdev->conf, "xen", NULL, + &xendev->qdev.mem_reentrancy_guard, netdev); =20 qemu_set_info_str(qemu_get_queue(netdev->nic), "nic: xenbus vif macaddr=3D%s", netdev->mac); diff --git a/hw/net/xgmac.c b/hw/net/xgmac.c index 0ab6ae91aa..1f4f277d84 100644 --- a/hw/net/xgmac.c +++ b/hw/net/xgmac.c @@ -402,7 +402,8 @@ static void xgmac_enet_realize(DeviceState *dev, Error = **errp) =20 qemu_macaddr_default_if_unset(&s->conf.macaddr); s->nic =3D qemu_new_nic(&net_xgmac_enet_info, &s->conf, - object_get_typename(OBJECT(dev)), dev->id, s); + object_get_typename(OBJECT(dev)), dev->id, + &dev->mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); =20 s->regs[XGMAC_ADDR_HIGH(0)] =3D (s->conf.macaddr.a[5] << 8) | diff --git a/hw/net/xilinx_axienet.c b/hw/net/xilinx_axienet.c index 5b19a01eaa..7d1fd37b4a 100644 --- a/hw/net/xilinx_axienet.c +++ b/hw/net/xilinx_axienet.c @@ -967,7 +967,8 @@ static void xilinx_enet_realize(DeviceState *dev, Error= **errp) =20 qemu_macaddr_default_if_unset(&s->conf.macaddr); s->nic =3D qemu_new_nic(&net_xilinx_enet_info, &s->conf, - object_get_typename(OBJECT(dev)), dev->id, s); + object_get_typename(OBJECT(dev)), dev->id, + &dev->mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); =20 tdk_init(&s->TEMAC.phy); diff --git a/hw/net/xilinx_ethlite.c b/hw/net/xilinx_ethlite.c index 89f4f3b254..989afaf037 100644 --- a/hw/net/xilinx_ethlite.c +++ b/hw/net/xilinx_ethlite.c @@ -235,7 +235,8 @@ static void xilinx_ethlite_realize(DeviceState *dev, Er= ror **errp) =20 qemu_macaddr_default_if_unset(&s->conf.macaddr); s->nic =3D qemu_new_nic(&net_xilinx_ethlite_info, &s->conf, - object_get_typename(OBJECT(dev)), dev->id, s); + object_get_typename(OBJECT(dev)), dev->id, + &dev->mem_reentrancy_guard, s); qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); } =20 diff --git a/hw/usb/dev-network.c b/hw/usb/dev-network.c index 5fff487ee5..2c33e36cad 100644 --- a/hw/usb/dev-network.c +++ b/hw/usb/dev-network.c @@ -1386,7 +1386,8 @@ static void usb_net_realize(USBDevice *dev, Error **e= rrp) =20 qemu_macaddr_default_if_unset(&s->conf.macaddr); 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Wed, 31 May 2023 20:19:27 -0700 (PDT) From: Akihiko Odaki To: Cc: Mauro Matteo Cascella , P J P , Alexander Bulekov , Dmitry Fleytman , Beniamino Galvani , Peter Maydell , Strahinja Jankovic , Jason Wang , "Edgar E. Iglesias" , Alistair Francis , Stefan Weil , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Andrew Jeffery , Joel Stanley , Richard Henderson , Helge Deller , Sriram Yagnaraman , Thomas Huth , Aleksandar Rikalo , Subbaraya Sundeep , Jan Kiszka , Tyrone Ting , Hao Wu , Max Filippov , Jiri Pirko , Daniel Henrique Barboza , David Gibson , Greg Kurz , Harsh Prateek Bora , Sven Schnelle , "Michael S. Tsirkin" , Stefano Stabellini , Anthony Perard , Paul Durrant , Rob Herring , Gerd Hoffmann , qemu-arm@nongnu.org, qemu-devel@nongnu.org, qemu-ppc@nongnu.org, xen-devel@lists.xenproject.org, Akihiko Odaki Subject: [PATCH v2 2/2] net: Update MemReentrancyGuard for NIC Date: Thu, 1 Jun 2023 12:18:59 +0900 Message-Id: <20230601031859.7115-3-akihiko.odaki@daynix.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230601031859.7115-1-akihiko.odaki@daynix.com> References: <20230601031859.7115-1-akihiko.odaki@daynix.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @daynix-com.20221208.gappssmtp.com) X-ZM-MESSAGEID: 1685589603057100001 Content-Type: text/plain; charset="utf-8" Recently MemReentrancyGuard was added to DeviceState to record that the device is engaging in I/O. The network device backend needs to update it when delivering a packet to a device. This implementation follows what bottom half does, but it does not add a tracepoint for the case that the network device backend started delivering a packet to a device which is already engaging in I/O. This is because such reentrancy frequently happens for qemu_flush_queued_packets() and is insignificant. Fixes: CVE-2023-3019 Reported-by: Alexander Bulekov Signed-off-by: Akihiko Odaki Acked-by: Alexander Bulekov --- include/net/net.h | 1 + net/net.c | 14 ++++++++++++++ 2 files changed, 15 insertions(+) diff --git a/include/net/net.h b/include/net/net.h index a7d8deaccb..685ec58318 100644 --- a/include/net/net.h +++ b/include/net/net.h @@ -124,6 +124,7 @@ typedef QTAILQ_HEAD(NetClientStateList, NetClientState)= NetClientStateList; typedef struct NICState { NetClientState *ncs; NICConf *conf; + MemReentrancyGuard *reentrancy_guard; void *opaque; bool peer_deleted; } NICState; diff --git a/net/net.c b/net/net.c index 982df2479f..3523cceafc 100644 --- a/net/net.c +++ b/net/net.c @@ -332,6 +332,7 @@ NICState *qemu_new_nic(NetClientInfo *info, nic =3D g_malloc0(info->size + sizeof(NetClientState) * queues); nic->ncs =3D (void *)nic + info->size; nic->conf =3D conf; + nic->reentrancy_guard =3D reentrancy_guard, nic->opaque =3D opaque; =20 for (i =3D 0; i < queues; i++) { @@ -805,6 +806,7 @@ static ssize_t qemu_deliver_packet_iov(NetClientState *= sender, int iovcnt, void *opaque) { + MemReentrancyGuard *owned_reentrancy_guard; NetClientState *nc =3D opaque; int ret; =20 @@ -817,12 +819,24 @@ static ssize_t qemu_deliver_packet_iov(NetClientState= *sender, return 0; } =20 + if (nc->info->type !=3D NET_CLIENT_DRIVER_NIC || + qemu_get_nic(nc)->reentrancy_guard->engaged_in_io) { + owned_reentrancy_guard =3D NULL; + } else { + owned_reentrancy_guard =3D qemu_get_nic(nc)->reentrancy_guard; + owned_reentrancy_guard->engaged_in_io =3D true; + } + if (nc->info->receive_iov && !(flags & QEMU_NET_PACKET_FLAG_RAW)) { ret =3D nc->info->receive_iov(nc, iov, iovcnt); } else { ret =3D nc_sendv_compat(nc, iov, iovcnt, flags); } =20 + if (owned_reentrancy_guard) { + owned_reentrancy_guard->engaged_in_io =3D false; + } + if (ret =3D=3D 0) { nc->receive_disabled =3D 1; } --=20 2.40.1