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This pull request contains the following changes for UML:
- Fixes for our new virtio code - Fix for the irqflags tracer - Kconfig coding style fixes - Allow BPF firmware loading in our vector driver -----BEGIN PGP SIGNATURE----- iQJKBAABCAA0FiEEdgfidid8lnn52cLTZvlZhesYu8EFAl3kHVYWHHJpY2hhcmRA c2lnbWEtc3Rhci5hdAAKCRBm+VmF6xi7wfdLD/41dQOInpHrfD4laBQB18TKqiMD cb7c6Se2x3Buzm9Mo8V1mRF2dXUCYZ113QyzuCtinbig1YJGhzPiuOqyjsX5dVRH v1e5G9OVyQ8k34LmYKuHN1ZmSrPShmwqQGUSZc5Or1U35yTMibqk1/g5Glw7lgeF Ca21CcWBodrjrqU3pq26Xf47u8MeMZcmJrmA4YBeRXi0tQp7GJpL4qivjtKD/b4v CfLbEBDdaNlpwLe1B+OJI3scWYvqepoRJkEGy9jwS4gkq6sobHTW35nuGJPuxdHd dODK7nkW/+NTb1X5c2zch4j1fLkmyIEsfFIQtrG88aqFN0c1ByUu0K9BEfTpDjRo TFHgDTxakxEReTaMTkZlzF+l/9HWOIzjTUoG2hv+gD42Tjw11tbFCNH0RqaKQ3r6 vXAdHu2h/N7TULHetT3PwuCx5S0gI3CSgz3HiLpDbRKfC4l/K/8RwU9anyvXROcf D/U4Dv6KIkzjdxopMkPWwWqnAk/vFQm2m9QL6QlX2e21y9gF75l1fkzGKusBRakp /6QQBy+W4zmuwZuGO1Mm9sXxdnhnrUqFuxBDBlCnS5WZOMP8hcc8Aqyde/qfRXOp KyY1QuBQpyjCdgNd2iY5GCbEKBd5AdreC7+Dn1JnbiQey/35HWy0d07uM8nwfKex 4qsLDFCma+HbqU96mA== =3LMX -----END PGP SIGNATURE----- Merge tag 'for-linus-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml Pull UML updates from Richard Weinberger: - Fixes for our new virtio code - Fix for the irqflags tracer - Kconfig coding style fixes - Allow BPF firmware loading in our vector driver * tag 'for-linus-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: um: Loadable BPF "Firmware" for vector drivers um: Fix Kconfig indentation um: virtio_uml: Disallow modular build um: virtio: Keep reading on -EAGAIN um: virtio: Remove device on disconnect um: Don't trace irqflags during shutdown
This commit is contained in:
Linus Torvalds
commit
fcaa0ad72d
@ -153,7 +153,7 @@ config KERNEL_STACK_ORDER
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It is possible to reduce the stack to 1 for 64BIT and 0 for 32BIT on
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older (pre-2017) CPUs. It is not recommended on newer CPUs due to the
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increase in the size of the state which needs to be saved when handling
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signals.
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signals.
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config MMAPPER
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tristate "iomem emulation driver"
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@ -337,7 +337,7 @@ config UML_NET_SLIRP
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endmenu
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config VIRTIO_UML
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tristate "UML driver for virtio devices"
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bool "UML driver for virtio devices"
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select VIRTIO
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help
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This driver provides support for virtio based paravirtual device
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@ -1,6 +1,6 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2017 - Cambridge Greys Limited
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* Copyright (C) 2017 - 2019 Cambridge Greys Limited
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* Copyright (C) 2011 - 2014 Cisco Systems Inc
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* Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
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* Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) and
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@ -21,6 +21,9 @@
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#include <linux/skbuff.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/firmware.h>
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#include <linux/fs.h>
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#include <uapi/linux/filter.h>
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#include <init.h>
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#include <irq_kern.h>
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#include <irq_user.h>
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@ -128,6 +131,23 @@ static int get_mtu(struct arglist *def)
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return ETH_MAX_PACKET;
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}
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static char *get_bpf_file(struct arglist *def)
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{
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return uml_vector_fetch_arg(def, "bpffile");
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}
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static bool get_bpf_flash(struct arglist *def)
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{
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char *allow = uml_vector_fetch_arg(def, "bpfflash");
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long result;
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if (allow != NULL) {
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if (kstrtoul(allow, 10, &result) == 0)
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return (allow > 0);
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}
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return false;
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}
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static int get_depth(struct arglist *def)
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{
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char *mtu = uml_vector_fetch_arg(def, "depth");
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@ -176,6 +196,7 @@ static int get_transport_options(struct arglist *def)
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int vec_rx = VECTOR_RX;
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int vec_tx = VECTOR_TX;
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long parsed;
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int result = 0;
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if (vector != NULL) {
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if (kstrtoul(vector, 10, &parsed) == 0) {
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@ -186,14 +207,16 @@ static int get_transport_options(struct arglist *def)
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}
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}
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if (get_bpf_flash(def))
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result = VECTOR_BPF_FLASH;
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if (strncmp(transport, TRANS_TAP, TRANS_TAP_LEN) == 0)
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return 0;
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return result;
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if (strncmp(transport, TRANS_HYBRID, TRANS_HYBRID_LEN) == 0)
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return (vec_rx | VECTOR_BPF);
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return (result | vec_rx | VECTOR_BPF);
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if (strncmp(transport, TRANS_RAW, TRANS_RAW_LEN) == 0)
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return (vec_rx | vec_tx | VECTOR_QDISC_BYPASS);
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return (vec_rx | vec_tx);
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return (result | vec_rx | vec_tx | VECTOR_QDISC_BYPASS);
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return (result | vec_rx | vec_tx);
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}
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@ -1139,6 +1162,8 @@ static int vector_net_close(struct net_device *dev)
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}
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tasklet_kill(&vp->tx_poll);
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if (vp->fds->rx_fd > 0) {
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if (vp->bpf)
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uml_vector_detach_bpf(vp->fds->rx_fd, vp->bpf);
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os_close_file(vp->fds->rx_fd);
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vp->fds->rx_fd = -1;
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}
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@ -1146,7 +1171,10 @@ static int vector_net_close(struct net_device *dev)
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os_close_file(vp->fds->tx_fd);
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vp->fds->tx_fd = -1;
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}
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if (vp->bpf != NULL)
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kfree(vp->bpf->filter);
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kfree(vp->bpf);
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vp->bpf = NULL;
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kfree(vp->fds->remote_addr);
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kfree(vp->transport_data);
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kfree(vp->header_rxbuffer);
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@ -1181,6 +1209,7 @@ static void vector_reset_tx(struct work_struct *work)
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netif_start_queue(vp->dev);
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netif_wake_queue(vp->dev);
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}
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static int vector_net_open(struct net_device *dev)
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{
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struct vector_private *vp = netdev_priv(dev);
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@ -1196,6 +1225,8 @@ static int vector_net_open(struct net_device *dev)
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vp->opened = true;
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spin_unlock_irqrestore(&vp->lock, flags);
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vp->bpf = uml_vector_user_bpf(get_bpf_file(vp->parsed));
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vp->fds = uml_vector_user_open(vp->unit, vp->parsed);
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if (vp->fds == NULL)
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@ -1267,8 +1298,11 @@ static int vector_net_open(struct net_device *dev)
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if (!uml_raw_enable_qdisc_bypass(vp->fds->rx_fd))
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vp->options |= VECTOR_BPF;
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}
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if ((vp->options & VECTOR_BPF) != 0)
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vp->bpf = uml_vector_default_bpf(vp->fds->rx_fd, dev->dev_addr);
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if (((vp->options & VECTOR_BPF) != 0) && (vp->bpf == NULL))
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vp->bpf = uml_vector_default_bpf(dev->dev_addr);
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if (vp->bpf != NULL)
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uml_vector_attach_bpf(vp->fds->rx_fd, vp->bpf);
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netif_start_queue(dev);
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@ -1347,6 +1381,65 @@ static void vector_net_get_drvinfo(struct net_device *dev,
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strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
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}
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static int vector_net_load_bpf_flash(struct net_device *dev,
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struct ethtool_flash *efl)
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{
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struct vector_private *vp = netdev_priv(dev);
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struct vector_device *vdevice;
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const struct firmware *fw;
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int result = 0;
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if (!(vp->options & VECTOR_BPF_FLASH)) {
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netdev_err(dev, "loading firmware not permitted: %s\n", efl->data);
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return -1;
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}
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spin_lock(&vp->lock);
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if (vp->bpf != NULL) {
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if (vp->opened)
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uml_vector_detach_bpf(vp->fds->rx_fd, vp->bpf);
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kfree(vp->bpf->filter);
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vp->bpf->filter = NULL;
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} else {
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vp->bpf = kmalloc(sizeof(struct sock_fprog), GFP_KERNEL);
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if (vp->bpf == NULL) {
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netdev_err(dev, "failed to allocate memory for firmware\n");
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goto flash_fail;
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}
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}
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vdevice = find_device(vp->unit);
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if (request_firmware(&fw, efl->data, &vdevice->pdev.dev))
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goto flash_fail;
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vp->bpf->filter = kmemdup(fw->data, fw->size, GFP_KERNEL);
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if (!vp->bpf->filter)
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goto free_buffer;
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vp->bpf->len = fw->size / sizeof(struct sock_filter);
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release_firmware(fw);
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if (vp->opened)
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result = uml_vector_attach_bpf(vp->fds->rx_fd, vp->bpf);
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spin_unlock(&vp->lock);
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return result;
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free_buffer:
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release_firmware(fw);
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flash_fail:
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spin_unlock(&vp->lock);
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if (vp->bpf != NULL)
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kfree(vp->bpf->filter);
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kfree(vp->bpf);
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vp->bpf = NULL;
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return -1;
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}
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static void vector_get_ringparam(struct net_device *netdev,
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struct ethtool_ringparam *ring)
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{
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@ -1424,6 +1517,7 @@ static const struct ethtool_ops vector_net_ethtool_ops = {
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.get_ethtool_stats = vector_get_ethtool_stats,
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.get_coalesce = vector_get_coalesce,
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.set_coalesce = vector_set_coalesce,
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.flash_device = vector_net_load_bpf_flash,
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};
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@ -1528,8 +1622,9 @@ static void vector_eth_configure(
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.in_write_poll = false,
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.coalesce = 2,
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.req_size = get_req_size(def),
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.in_error = false
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});
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.in_error = false,
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.bpf = NULL
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});
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dev->features = dev->hw_features = (NETIF_F_SG | NETIF_F_FRAGLIST);
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tasklet_init(&vp->tx_poll, vector_tx_poll, (unsigned long)vp);
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@ -29,10 +29,13 @@
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#define VECTOR_TX (1 << 1)
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#define VECTOR_BPF (1 << 2)
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#define VECTOR_QDISC_BYPASS (1 << 3)
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#define VECTOR_BPF_FLASH (1 << 4)
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#define ETH_MAX_PACKET 1500
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#define ETH_HEADER_OTHER 32 /* just in case someone decides to go mad on QnQ */
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#define MAX_FILTER_PROG (2 << 16)
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struct vector_queue {
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struct mmsghdr *mmsg_vector;
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void **skbuff_vector;
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@ -118,10 +121,13 @@ struct vector_private {
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bool in_write_poll;
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bool in_error;
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/* guest allowed to use ethtool flash to load bpf */
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bool bpf_via_flash;
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/* ethtool stats */
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struct vector_estats estats;
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void *bpf;
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struct sock_fprog *bpf;
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char user[0];
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};
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@ -46,7 +46,8 @@
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#define TUN_GET_F_FAIL "tapraw: TUNGETFEATURES failed: %s"
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#define L2TPV3_BIND_FAIL "l2tpv3_open : could not bind socket err=%i"
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#define UNIX_BIND_FAIL "unix_open : could not bind socket err=%i"
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#define BPF_ATTACH_FAIL "Failed to attach filter size %d to %d, err %d\n"
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#define BPF_ATTACH_FAIL "Failed to attach filter size %d prog %px to %d, err %d\n"
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#define BPF_DETACH_FAIL "Failed to detach filter size %d prog %px to %d, err %d\n"
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#define MAX_UN_LEN 107
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@ -660,31 +661,44 @@ int uml_vector_recvmmsg(
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else
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return -errno;
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}
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int uml_vector_attach_bpf(int fd, void *bpf, int bpf_len)
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int uml_vector_attach_bpf(int fd, void *bpf)
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{
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int err = setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER, bpf, bpf_len);
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struct sock_fprog *prog = bpf;
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int err = setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER, bpf, sizeof(struct sock_fprog));
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if (err < 0)
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printk(KERN_ERR BPF_ATTACH_FAIL, bpf_len, fd, -errno);
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printk(KERN_ERR BPF_ATTACH_FAIL, prog->len, prog->filter, fd, -errno);
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return err;
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}
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#define DEFAULT_BPF_LEN 6
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int uml_vector_detach_bpf(int fd, void *bpf)
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{
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struct sock_fprog *prog = bpf;
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void *uml_vector_default_bpf(int fd, void *mac)
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int err = setsockopt(fd, SOL_SOCKET, SO_DETACH_FILTER, bpf, sizeof(struct sock_fprog));
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if (err < 0)
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printk(KERN_ERR BPF_DETACH_FAIL, prog->len, prog->filter, fd, -errno);
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return err;
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}
|
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void *uml_vector_default_bpf(void *mac)
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{
|
||||
struct sock_filter *bpf;
|
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uint32_t *mac1 = (uint32_t *)(mac + 2);
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||||
uint16_t *mac2 = (uint16_t *) mac;
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||||
struct sock_fprog bpf_prog = {
|
||||
.len = 6,
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.filter = NULL,
|
||||
};
|
||||
struct sock_fprog *bpf_prog;
|
||||
|
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bpf_prog = uml_kmalloc(sizeof(struct sock_fprog), UM_GFP_KERNEL);
|
||||
if (bpf_prog) {
|
||||
bpf_prog->len = DEFAULT_BPF_LEN;
|
||||
bpf_prog->filter = NULL;
|
||||
} else {
|
||||
return NULL;
|
||||
}
|
||||
bpf = uml_kmalloc(
|
||||
sizeof(struct sock_filter) * DEFAULT_BPF_LEN, UM_GFP_KERNEL);
|
||||
if (bpf != NULL) {
|
||||
bpf_prog.filter = bpf;
|
||||
if (bpf) {
|
||||
bpf_prog->filter = bpf;
|
||||
/* ld [8] */
|
||||
bpf[0] = (struct sock_filter){ 0x20, 0, 0, 0x00000008 };
|
||||
/* jeq #0xMAC[2-6] jt 2 jf 5*/
|
||||
@ -697,12 +711,56 @@ void *uml_vector_default_bpf(int fd, void *mac)
|
||||
bpf[4] = (struct sock_filter){ 0x6, 0, 0, 0x00000000 };
|
||||
/* ret #0x40000 */
|
||||
bpf[5] = (struct sock_filter){ 0x6, 0, 0, 0x00040000 };
|
||||
if (uml_vector_attach_bpf(
|
||||
fd, &bpf_prog, sizeof(struct sock_fprog)) < 0) {
|
||||
kfree(bpf);
|
||||
bpf = NULL;
|
||||
}
|
||||
} else {
|
||||
kfree(bpf_prog);
|
||||
bpf_prog = NULL;
|
||||
}
|
||||
return bpf;
|
||||
return bpf_prog;
|
||||
}
|
||||
|
||||
/* Note - this function requires a valid mac being passed as an arg */
|
||||
|
||||
void *uml_vector_user_bpf(char *filename)
|
||||
{
|
||||
struct sock_filter *bpf;
|
||||
struct sock_fprog *bpf_prog;
|
||||
struct stat statbuf;
|
||||
int res, ffd = -1;
|
||||
|
||||
if (filename == NULL)
|
||||
return NULL;
|
||||
|
||||
if (stat(filename, &statbuf) < 0) {
|
||||
printk(KERN_ERR "Error %d reading bpf file", -errno);
|
||||
return false;
|
||||
}
|
||||
bpf_prog = uml_kmalloc(sizeof(struct sock_fprog), UM_GFP_KERNEL);
|
||||
if (bpf_prog != NULL) {
|
||||
bpf_prog->len = statbuf.st_size / sizeof(struct sock_filter);
|
||||
bpf_prog->filter = NULL;
|
||||
}
|
||||
ffd = os_open_file(filename, of_read(OPENFLAGS()), 0);
|
||||
if (ffd < 0) {
|
||||
printk(KERN_ERR "Error %d opening bpf file", -errno);
|
||||
goto bpf_failed;
|
||||
}
|
||||
bpf = uml_kmalloc(statbuf.st_size, UM_GFP_KERNEL);
|
||||
if (bpf == NULL) {
|
||||
printk(KERN_ERR "Failed to allocate bpf buffer");
|
||||
goto bpf_failed;
|
||||
}
|
||||
bpf_prog->filter = bpf;
|
||||
res = os_read_file(ffd, bpf, statbuf.st_size);
|
||||
if (res < statbuf.st_size) {
|
||||
printk(KERN_ERR "Failed to read bpf program %s, error %d", filename, res);
|
||||
kfree(bpf);
|
||||
goto bpf_failed;
|
||||
}
|
||||
os_close_file(ffd);
|
||||
return bpf_prog;
|
||||
bpf_failed:
|
||||
if (ffd > 0)
|
||||
os_close_file(ffd);
|
||||
kfree(bpf_prog);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
@ -28,6 +28,8 @@
|
||||
#define TRANS_BESS "bess"
|
||||
#define TRANS_BESS_LEN strlen(TRANS_BESS)
|
||||
|
||||
#define DEFAULT_BPF_LEN 6
|
||||
|
||||
#ifndef IPPROTO_GRE
|
||||
#define IPPROTO_GRE 0x2F
|
||||
#endif
|
||||
@ -95,8 +97,10 @@ extern int uml_vector_recvmmsg(
|
||||
unsigned int vlen,
|
||||
unsigned int flags
|
||||
);
|
||||
extern void *uml_vector_default_bpf(int fd, void *mac);
|
||||
extern int uml_vector_attach_bpf(int fd, void *bpf, int bpf_len);
|
||||
extern void *uml_vector_default_bpf(void *mac);
|
||||
extern void *uml_vector_user_bpf(char *filename);
|
||||
extern int uml_vector_attach_bpf(int fd, void *bpf);
|
||||
extern int uml_vector_detach_bpf(int fd, void *bpf);
|
||||
extern bool uml_raw_enable_qdisc_bypass(int fd);
|
||||
extern bool uml_raw_enable_vnet_headers(int fd);
|
||||
extern bool uml_tap_enable_vnet_headers(int fd);
|
||||
|
||||
@ -4,12 +4,12 @@
|
||||
*
|
||||
* Copyright(c) 2019 Intel Corporation
|
||||
*
|
||||
* This module allows virtio devices to be used over a vhost-user socket.
|
||||
* This driver allows virtio devices to be used over a vhost-user socket.
|
||||
*
|
||||
* Guest devices can be instantiated by kernel module or command line
|
||||
* parameters. One device will be created for each parameter. Syntax:
|
||||
*
|
||||
* [virtio_uml.]device=<socket>:<virtio_id>[:<platform_id>]
|
||||
* virtio_uml.device=<socket>:<virtio_id>[:<platform_id>]
|
||||
* where:
|
||||
* <socket> := vhost-user socket path to connect
|
||||
* <virtio_id> := virtio device id (as in virtio_ids.h)
|
||||
@ -42,6 +42,13 @@
|
||||
#define to_virtio_uml_device(_vdev) \
|
||||
container_of(_vdev, struct virtio_uml_device, vdev)
|
||||
|
||||
struct virtio_uml_platform_data {
|
||||
u32 virtio_device_id;
|
||||
const char *socket_path;
|
||||
struct work_struct conn_broken_wk;
|
||||
struct platform_device *pdev;
|
||||
};
|
||||
|
||||
struct virtio_uml_device {
|
||||
struct virtio_device vdev;
|
||||
struct platform_device *pdev;
|
||||
@ -50,6 +57,7 @@ struct virtio_uml_device {
|
||||
u64 features;
|
||||
u64 protocol_features;
|
||||
u8 status;
|
||||
u8 registered:1;
|
||||
};
|
||||
|
||||
struct virtio_uml_vq_info {
|
||||
@ -83,7 +91,7 @@ static int full_sendmsg_fds(int fd, const void *buf, unsigned int len,
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int full_read(int fd, void *buf, int len)
|
||||
static int full_read(int fd, void *buf, int len, bool abortable)
|
||||
{
|
||||
int rc;
|
||||
|
||||
@ -93,7 +101,7 @@ static int full_read(int fd, void *buf, int len)
|
||||
buf += rc;
|
||||
len -= rc;
|
||||
}
|
||||
} while (len && (rc > 0 || rc == -EINTR));
|
||||
} while (len && (rc > 0 || rc == -EINTR || (!abortable && rc == -EAGAIN)));
|
||||
|
||||
if (rc < 0)
|
||||
return rc;
|
||||
@ -104,28 +112,37 @@ static int full_read(int fd, void *buf, int len)
|
||||
|
||||
static int vhost_user_recv_header(int fd, struct vhost_user_msg *msg)
|
||||
{
|
||||
return full_read(fd, msg, sizeof(msg->header));
|
||||
return full_read(fd, msg, sizeof(msg->header), true);
|
||||
}
|
||||
|
||||
static int vhost_user_recv(int fd, struct vhost_user_msg *msg,
|
||||
static int vhost_user_recv(struct virtio_uml_device *vu_dev,
|
||||
int fd, struct vhost_user_msg *msg,
|
||||
size_t max_payload_size)
|
||||
{
|
||||
size_t size;
|
||||
int rc = vhost_user_recv_header(fd, msg);
|
||||
|
||||
if (rc == -ECONNRESET && vu_dev->registered) {
|
||||
struct virtio_uml_platform_data *pdata;
|
||||
|
||||
pdata = vu_dev->pdev->dev.platform_data;
|
||||
|
||||
virtio_break_device(&vu_dev->vdev);
|
||||
schedule_work(&pdata->conn_broken_wk);
|
||||
}
|
||||
if (rc)
|
||||
return rc;
|
||||
size = msg->header.size;
|
||||
if (size > max_payload_size)
|
||||
return -EPROTO;
|
||||
return full_read(fd, &msg->payload, size);
|
||||
return full_read(fd, &msg->payload, size, false);
|
||||
}
|
||||
|
||||
static int vhost_user_recv_resp(struct virtio_uml_device *vu_dev,
|
||||
struct vhost_user_msg *msg,
|
||||
size_t max_payload_size)
|
||||
{
|
||||
int rc = vhost_user_recv(vu_dev->sock, msg, max_payload_size);
|
||||
int rc = vhost_user_recv(vu_dev, vu_dev->sock, msg, max_payload_size);
|
||||
|
||||
if (rc)
|
||||
return rc;
|
||||
@ -155,7 +172,7 @@ static int vhost_user_recv_req(struct virtio_uml_device *vu_dev,
|
||||
struct vhost_user_msg *msg,
|
||||
size_t max_payload_size)
|
||||
{
|
||||
int rc = vhost_user_recv(vu_dev->req_fd, msg, max_payload_size);
|
||||
int rc = vhost_user_recv(vu_dev, vu_dev->req_fd, msg, max_payload_size);
|
||||
|
||||
if (rc)
|
||||
return rc;
|
||||
@ -963,11 +980,6 @@ static void virtio_uml_release_dev(struct device *d)
|
||||
|
||||
/* Platform device */
|
||||
|
||||
struct virtio_uml_platform_data {
|
||||
u32 virtio_device_id;
|
||||
const char *socket_path;
|
||||
};
|
||||
|
||||
static int virtio_uml_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct virtio_uml_platform_data *pdata = pdev->dev.platform_data;
|
||||
@ -1005,6 +1017,7 @@ static int virtio_uml_probe(struct platform_device *pdev)
|
||||
rc = register_virtio_device(&vu_dev->vdev);
|
||||
if (rc)
|
||||
put_device(&vu_dev->vdev.dev);
|
||||
vu_dev->registered = 1;
|
||||
return rc;
|
||||
|
||||
error_init:
|
||||
@ -1034,13 +1047,31 @@ static struct device vu_cmdline_parent = {
|
||||
static bool vu_cmdline_parent_registered;
|
||||
static int vu_cmdline_id;
|
||||
|
||||
static int vu_unregister_cmdline_device(struct device *dev, void *data)
|
||||
{
|
||||
struct platform_device *pdev = to_platform_device(dev);
|
||||
struct virtio_uml_platform_data *pdata = pdev->dev.platform_data;
|
||||
|
||||
kfree(pdata->socket_path);
|
||||
platform_device_unregister(pdev);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void vu_conn_broken(struct work_struct *wk)
|
||||
{
|
||||
struct virtio_uml_platform_data *pdata;
|
||||
|
||||
pdata = container_of(wk, struct virtio_uml_platform_data, conn_broken_wk);
|
||||
vu_unregister_cmdline_device(&pdata->pdev->dev, NULL);
|
||||
}
|
||||
|
||||
static int vu_cmdline_set(const char *device, const struct kernel_param *kp)
|
||||
{
|
||||
const char *ids = strchr(device, ':');
|
||||
unsigned int virtio_device_id;
|
||||
int processed, consumed, err;
|
||||
char *socket_path;
|
||||
struct virtio_uml_platform_data pdata;
|
||||
struct virtio_uml_platform_data pdata, *ppdata;
|
||||
struct platform_device *pdev;
|
||||
|
||||
if (!ids || ids == device)
|
||||
@ -1079,6 +1110,11 @@ static int vu_cmdline_set(const char *device, const struct kernel_param *kp)
|
||||
err = PTR_ERR_OR_ZERO(pdev);
|
||||
if (err)
|
||||
goto free;
|
||||
|
||||
ppdata = pdev->dev.platform_data;
|
||||
ppdata->pdev = pdev;
|
||||
INIT_WORK(&ppdata->conn_broken_wk, vu_conn_broken);
|
||||
|
||||
return 0;
|
||||
|
||||
free:
|
||||
@ -1121,16 +1157,6 @@ __uml_help(vu_cmdline_param_ops,
|
||||
);
|
||||
|
||||
|
||||
static int vu_unregister_cmdline_device(struct device *dev, void *data)
|
||||
{
|
||||
struct platform_device *pdev = to_platform_device(dev);
|
||||
struct virtio_uml_platform_data *pdata = pdev->dev.platform_data;
|
||||
|
||||
kfree(pdata->socket_path);
|
||||
platform_device_unregister(pdev);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void vu_unregister_cmdline_devices(void)
|
||||
{
|
||||
if (vu_cmdline_parent_registered) {
|
||||
|
||||
@ -170,7 +170,7 @@ int __init main(int argc, char **argv, char **envp)
|
||||
* that they won't be delivered after the exec, when
|
||||
* they are definitely not expected.
|
||||
*/
|
||||
unblock_signals_trace();
|
||||
unblock_signals();
|
||||
|
||||
os_info("\n");
|
||||
/* Reboot */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user