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author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-07-14 09:24:32 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-07-14 09:24:32 -0700 |
commit | 8096acd7442e613fad0354fc8dfdb2003cceea0b (patch) | |
tree | ad8b748475fa87fe7c3b6f9cd00da8d7b8d078bd /drivers/ptp/ptp_sysfs.c | |
parent | d1d488d813703618f0dd93f0e4c4a05928114aa8 (diff) | |
parent | bcb9928a155444dbd212473e60241ca0a7f641e1 (diff) | |
download | linux-stable-8096acd7442e613fad0354fc8dfdb2003cceea0b.tar.gz linux-stable-8096acd7442e613fad0354fc8dfdb2003cceea0b.tar.bz2 linux-stable-8096acd7442e613fad0354fc8dfdb2003cceea0b.zip |
Merge tag 'net-5.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski.
"Including fixes from bpf and netfilter.
Current release - regressions:
- sock: fix parameter order in sock_setsockopt()
Current release - new code bugs:
- netfilter: nft_last:
- fix incorrect arithmetic when restoring last used
- honor NFTA_LAST_SET on restoration
Previous releases - regressions:
- udp: properly flush normal packet at GRO time
- sfc: ensure correct number of XDP queues; don't allow enabling the
feature if there isn't sufficient resources to Tx from any CPU
- dsa: sja1105: fix address learning getting disabled on the CPU port
- mptcp: addresses a rmem accounting issue that could keep packets in
subflow receive buffers longer than necessary, delaying MPTCP-level
ACKs
- ip_tunnel: fix mtu calculation for ETHER tunnel devices
- do not reuse skbs allocated from skbuff_fclone_cache in the napi
skb cache, we'd try to return them to the wrong slab cache
- tcp: consistently disable header prediction for mptcp
Previous releases - always broken:
- bpf: fix subprog poke descriptor tracking use-after-free
- ipv6:
- allocate enough headroom in ip6_finish_output2() in case
iptables TEE is used
- tcp: drop silly ICMPv6 packet too big messages to avoid
expensive and pointless lookups (which may serve as a DDOS
vector)
- make sure fwmark is copied in SYNACK packets
- fix 'disable_policy' for forwarded packets (align with IPv4)
- netfilter: conntrack:
- do not renew entry stuck in tcp SYN_SENT state
- do not mark RST in the reply direction coming after SYN packet
for an out-of-sync entry
- mptcp: cleanly handle error conditions with MP_JOIN and syncookies
- mptcp: fix double free when rejecting a join due to port mismatch
- validate lwtstate->data before returning from skb_tunnel_info()
- tcp: call sk_wmem_schedule before sk_mem_charge in zerocopy path
- mt76: mt7921: continue to probe driver when fw already downloaded
- bonding: fix multiple issues with offloading IPsec to (thru?) bond
- stmmac: ptp: fix issues around Qbv support and setting time back
- bcmgenet: always clear wake-up based on energy detection
Misc:
- sctp: move 198 addresses from unusable to private scope
- ptp: support virtual clocks and timestamping
- openvswitch: optimize operation for key comparison"
* tag 'net-5.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (158 commits)
net: dsa: properly check for the bridge_leave methods in dsa_switch_bridge_leave()
sfc: add logs explaining XDP_TX/REDIRECT is not available
sfc: ensure correct number of XDP queues
sfc: fix lack of XDP TX queues - error XDP TX failed (-22)
net: fddi: fix UAF in fza_probe
net: dsa: sja1105: fix address learning getting disabled on the CPU port
net: ocelot: fix switchdev objects synced for wrong netdev with LAG offload
net: Use nlmsg_unicast() instead of netlink_unicast()
octeontx2-pf: Fix uninitialized boolean variable pps
ipv6: allocate enough headroom in ip6_finish_output2()
net: hdlc: rename 'mod_init' & 'mod_exit' functions to be module-specific
net: bridge: multicast: fix MRD advertisement router port marking race
net: bridge: multicast: fix PIM hello router port marking race
net: phy: marvell10g: fix differentiation of 88X3310 from 88X3340
dsa: fix for_each_child.cocci warnings
virtio_net: check virtqueue_add_sgs() return value
mptcp: properly account bulk freed memory
selftests: mptcp: fix case multiple subflows limited by server
mptcp: avoid processing packet if a subflow reset
mptcp: fix syncookie process if mptcp can not_accept new subflow
...
Diffstat (limited to 'drivers/ptp/ptp_sysfs.c')
-rw-r--r-- | drivers/ptp/ptp_sysfs.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/drivers/ptp/ptp_sysfs.c b/drivers/ptp/ptp_sysfs.c index be076a91e20e..b3d96b747292 100644 --- a/drivers/ptp/ptp_sysfs.c +++ b/drivers/ptp/ptp_sysfs.c @@ -3,6 +3,7 @@ * PTP 1588 clock support - sysfs interface. * * Copyright (C) 2010 OMICRON electronics GmbH + * Copyright 2021 NXP */ #include <linux/capability.h> #include <linux/slab.h> @@ -148,6 +149,159 @@ out: } static DEVICE_ATTR(pps_enable, 0220, NULL, pps_enable_store); +static int unregister_vclock(struct device *dev, void *data) +{ + struct ptp_clock *ptp = dev_get_drvdata(dev); + struct ptp_clock_info *info = ptp->info; + struct ptp_vclock *vclock; + u8 *num = data; + + vclock = info_to_vclock(info); + dev_info(dev->parent, "delete virtual clock ptp%d\n", + vclock->clock->index); + + ptp_vclock_unregister(vclock); + (*num)--; + + /* For break. Not error. */ + if (*num == 0) + return -EINVAL; + + return 0; +} + +static ssize_t n_vclocks_show(struct device *dev, + struct device_attribute *attr, char *page) +{ + struct ptp_clock *ptp = dev_get_drvdata(dev); + ssize_t size; + + if (mutex_lock_interruptible(&ptp->n_vclocks_mux)) + return -ERESTARTSYS; + + size = snprintf(page, PAGE_SIZE - 1, "%u\n", ptp->n_vclocks); + + mutex_unlock(&ptp->n_vclocks_mux); + + return size; +} + +static ssize_t n_vclocks_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct ptp_clock *ptp = dev_get_drvdata(dev); + struct ptp_vclock *vclock; + int err = -EINVAL; + u32 num, i; + + if (kstrtou32(buf, 0, &num)) + return err; + + if (mutex_lock_interruptible(&ptp->n_vclocks_mux)) + return -ERESTARTSYS; + + if (num > ptp->max_vclocks) { + dev_err(dev, "max value is %d\n", ptp->max_vclocks); + goto out; + } + + /* Need to create more vclocks */ + if (num > ptp->n_vclocks) { + for (i = 0; i < num - ptp->n_vclocks; i++) { + vclock = ptp_vclock_register(ptp); + if (!vclock) + goto out; + + *(ptp->vclock_index + ptp->n_vclocks + i) = + vclock->clock->index; + + dev_info(dev, "new virtual clock ptp%d\n", + vclock->clock->index); + } + } + + /* Need to delete vclocks */ + if (num < ptp->n_vclocks) { + i = ptp->n_vclocks - num; + device_for_each_child_reverse(dev, &i, + unregister_vclock); + + for (i = 1; i <= ptp->n_vclocks - num; i++) + *(ptp->vclock_index + ptp->n_vclocks - i) = -1; + } + + if (num == 0) + dev_info(dev, "only physical clock in use now\n"); + else + dev_info(dev, "guarantee physical clock free running\n"); + + ptp->n_vclocks = num; + mutex_unlock(&ptp->n_vclocks_mux); + + return count; +out: + mutex_unlock(&ptp->n_vclocks_mux); + return err; +} +static DEVICE_ATTR_RW(n_vclocks); + +static ssize_t max_vclocks_show(struct device *dev, + struct device_attribute *attr, char *page) +{ + struct ptp_clock *ptp = dev_get_drvdata(dev); + ssize_t size; + + size = snprintf(page, PAGE_SIZE - 1, "%u\n", ptp->max_vclocks); + + return size; +} + +static ssize_t max_vclocks_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct ptp_clock *ptp = dev_get_drvdata(dev); + unsigned int *vclock_index; + int err = -EINVAL; + size_t size; + u32 max; + + if (kstrtou32(buf, 0, &max) || max == 0) + return -EINVAL; + + if (max == ptp->max_vclocks) + return count; + + if (mutex_lock_interruptible(&ptp->n_vclocks_mux)) + return -ERESTARTSYS; + + if (max < ptp->n_vclocks) + goto out; + + size = sizeof(int) * max; + vclock_index = kzalloc(size, GFP_KERNEL); + if (!vclock_index) { + err = -ENOMEM; + goto out; + } + + size = sizeof(int) * ptp->n_vclocks; + memcpy(vclock_index, ptp->vclock_index, size); + + kfree(ptp->vclock_index); + ptp->vclock_index = vclock_index; + ptp->max_vclocks = max; + + mutex_unlock(&ptp->n_vclocks_mux); + + return count; +out: + mutex_unlock(&ptp->n_vclocks_mux); + return err; +} +static DEVICE_ATTR_RW(max_vclocks); + static struct attribute *ptp_attrs[] = { &dev_attr_clock_name.attr, @@ -162,6 +316,8 @@ static struct attribute *ptp_attrs[] = { &dev_attr_fifo.attr, &dev_attr_period.attr, &dev_attr_pps_enable.attr, + &dev_attr_n_vclocks.attr, + &dev_attr_max_vclocks.attr, NULL }; @@ -183,6 +339,10 @@ static umode_t ptp_is_attribute_visible(struct kobject *kobj, } else if (attr == &dev_attr_pps_enable.attr) { if (!info->pps) mode = 0; + } else if (attr == &dev_attr_n_vclocks.attr || + attr == &dev_attr_max_vclocks.attr) { + if (ptp->is_virtual_clock) + mode = 0; } return mode; |