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authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /fs/udf/partition.c
downloadlinux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz
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Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ...
Diffstat (limited to 'fs/udf/partition.c')
-rw-r--r--fs/udf/partition.c342
1 files changed, 342 insertions, 0 deletions
diff --git a/fs/udf/partition.c b/fs/udf/partition.c
new file mode 100644
index 000000000..5bcfe78d5
--- /dev/null
+++ b/fs/udf/partition.c
@@ -0,0 +1,342 @@
+/*
+ * partition.c
+ *
+ * PURPOSE
+ * Partition handling routines for the OSTA-UDF(tm) filesystem.
+ *
+ * COPYRIGHT
+ * This file is distributed under the terms of the GNU General Public
+ * License (GPL). Copies of the GPL can be obtained from:
+ * ftp://prep.ai.mit.edu/pub/gnu/GPL
+ * Each contributing author retains all rights to their own work.
+ *
+ * (C) 1998-2001 Ben Fennema
+ *
+ * HISTORY
+ *
+ * 12/06/98 blf Created file.
+ *
+ */
+
+#include "udfdecl.h"
+#include "udf_sb.h"
+#include "udf_i.h"
+
+#include <linux/fs.h>
+#include <linux/string.h>
+#include <linux/mutex.h>
+
+uint32_t udf_get_pblock(struct super_block *sb, uint32_t block,
+ uint16_t partition, uint32_t offset)
+{
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ struct udf_part_map *map;
+ if (partition >= sbi->s_partitions) {
+ udf_debug("block=%u, partition=%u, offset=%u: invalid partition\n",
+ block, partition, offset);
+ return 0xFFFFFFFF;
+ }
+ map = &sbi->s_partmaps[partition];
+ if (map->s_partition_func)
+ return map->s_partition_func(sb, block, partition, offset);
+ else
+ return map->s_partition_root + block + offset;
+}
+
+uint32_t udf_get_pblock_virt15(struct super_block *sb, uint32_t block,
+ uint16_t partition, uint32_t offset)
+{
+ struct buffer_head *bh = NULL;
+ uint32_t newblock;
+ uint32_t index;
+ uint32_t loc;
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ struct udf_part_map *map;
+ struct udf_virtual_data *vdata;
+ struct udf_inode_info *iinfo = UDF_I(sbi->s_vat_inode);
+ int err;
+
+ map = &sbi->s_partmaps[partition];
+ vdata = &map->s_type_specific.s_virtual;
+
+ if (block > vdata->s_num_entries) {
+ udf_debug("Trying to access block beyond end of VAT (%u max %u)\n",
+ block, vdata->s_num_entries);
+ return 0xFFFFFFFF;
+ }
+
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
+ loc = le32_to_cpu(((__le32 *)(iinfo->i_data +
+ vdata->s_start_offset))[block]);
+ goto translate;
+ }
+ index = (sb->s_blocksize - vdata->s_start_offset) / sizeof(uint32_t);
+ if (block >= index) {
+ block -= index;
+ newblock = 1 + (block / (sb->s_blocksize / sizeof(uint32_t)));
+ index = block % (sb->s_blocksize / sizeof(uint32_t));
+ } else {
+ newblock = 0;
+ index = vdata->s_start_offset / sizeof(uint32_t) + block;
+ }
+
+ bh = udf_bread(sbi->s_vat_inode, newblock, 0, &err);
+ if (!bh) {
+ udf_debug("get_pblock(UDF_VIRTUAL_MAP:%p,%u,%u)\n",
+ sb, block, partition);
+ return 0xFFFFFFFF;
+ }
+
+ loc = le32_to_cpu(((__le32 *)bh->b_data)[index]);
+
+ brelse(bh);
+
+translate:
+ if (iinfo->i_location.partitionReferenceNum == partition) {
+ udf_debug("recursive call to udf_get_pblock!\n");
+ return 0xFFFFFFFF;
+ }
+
+ return udf_get_pblock(sb, loc,
+ iinfo->i_location.partitionReferenceNum,
+ offset);
+}
+
+inline uint32_t udf_get_pblock_virt20(struct super_block *sb, uint32_t block,
+ uint16_t partition, uint32_t offset)
+{
+ return udf_get_pblock_virt15(sb, block, partition, offset);
+}
+
+uint32_t udf_get_pblock_spar15(struct super_block *sb, uint32_t block,
+ uint16_t partition, uint32_t offset)
+{
+ int i;
+ struct sparingTable *st = NULL;
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ struct udf_part_map *map;
+ uint32_t packet;
+ struct udf_sparing_data *sdata;
+
+ map = &sbi->s_partmaps[partition];
+ sdata = &map->s_type_specific.s_sparing;
+ packet = (block + offset) & ~(sdata->s_packet_len - 1);
+
+ for (i = 0; i < 4; i++) {
+ if (sdata->s_spar_map[i] != NULL) {
+ st = (struct sparingTable *)
+ sdata->s_spar_map[i]->b_data;
+ break;
+ }
+ }
+
+ if (st) {
+ for (i = 0; i < le16_to_cpu(st->reallocationTableLen); i++) {
+ struct sparingEntry *entry = &st->mapEntry[i];
+ u32 origLoc = le32_to_cpu(entry->origLocation);
+ if (origLoc >= 0xFFFFFFF0)
+ break;
+ else if (origLoc == packet)
+ return le32_to_cpu(entry->mappedLocation) +
+ ((block + offset) &
+ (sdata->s_packet_len - 1));
+ else if (origLoc > packet)
+ break;
+ }
+ }
+
+ return map->s_partition_root + block + offset;
+}
+
+int udf_relocate_blocks(struct super_block *sb, long old_block, long *new_block)
+{
+ struct udf_sparing_data *sdata;
+ struct sparingTable *st = NULL;
+ struct sparingEntry mapEntry;
+ uint32_t packet;
+ int i, j, k, l;
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ u16 reallocationTableLen;
+ struct buffer_head *bh;
+ int ret = 0;
+
+ mutex_lock(&sbi->s_alloc_mutex);
+ for (i = 0; i < sbi->s_partitions; i++) {
+ struct udf_part_map *map = &sbi->s_partmaps[i];
+ if (old_block > map->s_partition_root &&
+ old_block < map->s_partition_root + map->s_partition_len) {
+ sdata = &map->s_type_specific.s_sparing;
+ packet = (old_block - map->s_partition_root) &
+ ~(sdata->s_packet_len - 1);
+
+ for (j = 0; j < 4; j++)
+ if (sdata->s_spar_map[j] != NULL) {
+ st = (struct sparingTable *)
+ sdata->s_spar_map[j]->b_data;
+ break;
+ }
+
+ if (!st) {
+ ret = 1;
+ goto out;
+ }
+
+ reallocationTableLen =
+ le16_to_cpu(st->reallocationTableLen);
+ for (k = 0; k < reallocationTableLen; k++) {
+ struct sparingEntry *entry = &st->mapEntry[k];
+ u32 origLoc = le32_to_cpu(entry->origLocation);
+
+ if (origLoc == 0xFFFFFFFF) {
+ for (; j < 4; j++) {
+ int len;
+ bh = sdata->s_spar_map[j];
+ if (!bh)
+ continue;
+
+ st = (struct sparingTable *)
+ bh->b_data;
+ entry->origLocation =
+ cpu_to_le32(packet);
+ len =
+ sizeof(struct sparingTable) +
+ reallocationTableLen *
+ sizeof(struct sparingEntry);
+ udf_update_tag((char *)st, len);
+ mark_buffer_dirty(bh);
+ }
+ *new_block = le32_to_cpu(
+ entry->mappedLocation) +
+ ((old_block -
+ map->s_partition_root) &
+ (sdata->s_packet_len - 1));
+ ret = 0;
+ goto out;
+ } else if (origLoc == packet) {
+ *new_block = le32_to_cpu(
+ entry->mappedLocation) +
+ ((old_block -
+ map->s_partition_root) &
+ (sdata->s_packet_len - 1));
+ ret = 0;
+ goto out;
+ } else if (origLoc > packet)
+ break;
+ }
+
+ for (l = k; l < reallocationTableLen; l++) {
+ struct sparingEntry *entry = &st->mapEntry[l];
+ u32 origLoc = le32_to_cpu(entry->origLocation);
+
+ if (origLoc != 0xFFFFFFFF)
+ continue;
+
+ for (; j < 4; j++) {
+ bh = sdata->s_spar_map[j];
+ if (!bh)
+ continue;
+
+ st = (struct sparingTable *)bh->b_data;
+ mapEntry = st->mapEntry[l];
+ mapEntry.origLocation =
+ cpu_to_le32(packet);
+ memmove(&st->mapEntry[k + 1],
+ &st->mapEntry[k],
+ (l - k) *
+ sizeof(struct sparingEntry));
+ st->mapEntry[k] = mapEntry;
+ udf_update_tag((char *)st,
+ sizeof(struct sparingTable) +
+ reallocationTableLen *
+ sizeof(struct sparingEntry));
+ mark_buffer_dirty(bh);
+ }
+ *new_block =
+ le32_to_cpu(
+ st->mapEntry[k].mappedLocation) +
+ ((old_block - map->s_partition_root) &
+ (sdata->s_packet_len - 1));
+ ret = 0;
+ goto out;
+ }
+
+ ret = 1;
+ goto out;
+ } /* if old_block */
+ }
+
+ if (i == sbi->s_partitions) {
+ /* outside of partitions */
+ /* for now, fail =) */
+ ret = 1;
+ }
+
+out:
+ mutex_unlock(&sbi->s_alloc_mutex);
+ return ret;
+}
+
+static uint32_t udf_try_read_meta(struct inode *inode, uint32_t block,
+ uint16_t partition, uint32_t offset)
+{
+ struct super_block *sb = inode->i_sb;
+ struct udf_part_map *map;
+ struct kernel_lb_addr eloc;
+ uint32_t elen;
+ sector_t ext_offset;
+ struct extent_position epos = {};
+ uint32_t phyblock;
+
+ if (inode_bmap(inode, block, &epos, &eloc, &elen, &ext_offset) !=
+ (EXT_RECORDED_ALLOCATED >> 30))
+ phyblock = 0xFFFFFFFF;
+ else {
+ map = &UDF_SB(sb)->s_partmaps[partition];
+ /* map to sparable/physical partition desc */
+ phyblock = udf_get_pblock(sb, eloc.logicalBlockNum,
+ map->s_type_specific.s_metadata.s_phys_partition_ref,
+ ext_offset + offset);
+ }
+
+ brelse(epos.bh);
+ return phyblock;
+}
+
+uint32_t udf_get_pblock_meta25(struct super_block *sb, uint32_t block,
+ uint16_t partition, uint32_t offset)
+{
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ struct udf_part_map *map;
+ struct udf_meta_data *mdata;
+ uint32_t retblk;
+ struct inode *inode;
+
+ udf_debug("READING from METADATA\n");
+
+ map = &sbi->s_partmaps[partition];
+ mdata = &map->s_type_specific.s_metadata;
+ inode = mdata->s_metadata_fe ? : mdata->s_mirror_fe;
+
+ if (!inode)
+ return 0xFFFFFFFF;
+
+ retblk = udf_try_read_meta(inode, block, partition, offset);
+ if (retblk == 0xFFFFFFFF && mdata->s_metadata_fe) {
+ udf_warn(sb, "error reading from METADATA, trying to read from MIRROR\n");
+ if (!(mdata->s_flags & MF_MIRROR_FE_LOADED)) {
+ mdata->s_mirror_fe = udf_find_metadata_inode_efe(sb,
+ mdata->s_mirror_file_loc,
+ mdata->s_phys_partition_ref);
+ if (IS_ERR(mdata->s_mirror_fe))
+ mdata->s_mirror_fe = NULL;
+ mdata->s_flags |= MF_MIRROR_FE_LOADED;
+ }
+
+ inode = mdata->s_mirror_fe;
+ if (!inode)
+ return 0xFFFFFFFF;
+ retblk = udf_try_read_meta(inode, block, partition, offset);
+ }
+
+ return retblk;
+}