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author | 2023-02-21 18:24:12 -0800 | |
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committer | 2023-02-21 18:24:12 -0800 | |
commit | 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch) | |
tree | cc5c2d0a898769fd59549594fedb3ee6f84e59a0 /net/sched/act_skbedit.c | |
download | linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip |
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 '')
-rw-r--r-- | net/sched/act_skbedit.c | 464 |
1 files changed, 464 insertions, 0 deletions
diff --git a/net/sched/act_skbedit.c b/net/sched/act_skbedit.c new file mode 100644 index 000000000..ce7008cf2 --- /dev/null +++ b/net/sched/act_skbedit.c @@ -0,0 +1,464 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2008, Intel Corporation. + * + * Author: Alexander Duyck <alexander.h.duyck@intel.com> + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/skbuff.h> +#include <linux/rtnetlink.h> +#include <net/netlink.h> +#include <net/pkt_sched.h> +#include <net/ip.h> +#include <net/ipv6.h> +#include <net/dsfield.h> +#include <net/pkt_cls.h> +#include <net/tc_wrapper.h> + +#include <linux/tc_act/tc_skbedit.h> +#include <net/tc_act/tc_skbedit.h> + +static struct tc_action_ops act_skbedit_ops; + +static u16 tcf_skbedit_hash(struct tcf_skbedit_params *params, + struct sk_buff *skb) +{ + u16 queue_mapping = params->queue_mapping; + + if (params->flags & SKBEDIT_F_TXQ_SKBHASH) { + u32 hash = skb_get_hash(skb); + + queue_mapping += hash % params->mapping_mod; + } + + return netdev_cap_txqueue(skb->dev, queue_mapping); +} + +TC_INDIRECT_SCOPE int tcf_skbedit_act(struct sk_buff *skb, + const struct tc_action *a, + struct tcf_result *res) +{ + struct tcf_skbedit *d = to_skbedit(a); + struct tcf_skbedit_params *params; + int action; + + tcf_lastuse_update(&d->tcf_tm); + bstats_update(this_cpu_ptr(d->common.cpu_bstats), skb); + + params = rcu_dereference_bh(d->params); + action = READ_ONCE(d->tcf_action); + + if (params->flags & SKBEDIT_F_PRIORITY) + skb->priority = params->priority; + if (params->flags & SKBEDIT_F_INHERITDSFIELD) { + int wlen = skb_network_offset(skb); + + switch (skb_protocol(skb, true)) { + case htons(ETH_P_IP): + wlen += sizeof(struct iphdr); + if (!pskb_may_pull(skb, wlen)) + goto err; + skb->priority = ipv4_get_dsfield(ip_hdr(skb)) >> 2; + break; + + case htons(ETH_P_IPV6): + wlen += sizeof(struct ipv6hdr); + if (!pskb_may_pull(skb, wlen)) + goto err; + skb->priority = ipv6_get_dsfield(ipv6_hdr(skb)) >> 2; + break; + } + } + if (params->flags & SKBEDIT_F_QUEUE_MAPPING && + skb->dev->real_num_tx_queues > params->queue_mapping) { +#ifdef CONFIG_NET_EGRESS + netdev_xmit_skip_txqueue(true); +#endif + skb_set_queue_mapping(skb, tcf_skbedit_hash(params, skb)); + } + if (params->flags & SKBEDIT_F_MARK) { + skb->mark &= ~params->mask; + skb->mark |= params->mark & params->mask; + } + if (params->flags & SKBEDIT_F_PTYPE) + skb->pkt_type = params->ptype; + return action; + +err: + qstats_drop_inc(this_cpu_ptr(d->common.cpu_qstats)); + return TC_ACT_SHOT; +} + +static void tcf_skbedit_stats_update(struct tc_action *a, u64 bytes, + u64 packets, u64 drops, + u64 lastuse, bool hw) +{ + struct tcf_skbedit *d = to_skbedit(a); + struct tcf_t *tm = &d->tcf_tm; + + tcf_action_update_stats(a, bytes, packets, drops, hw); + tm->lastuse = max_t(u64, tm->lastuse, lastuse); +} + +static const struct nla_policy skbedit_policy[TCA_SKBEDIT_MAX + 1] = { + [TCA_SKBEDIT_PARMS] = { .len = sizeof(struct tc_skbedit) }, + [TCA_SKBEDIT_PRIORITY] = { .len = sizeof(u32) }, + [TCA_SKBEDIT_QUEUE_MAPPING] = { .len = sizeof(u16) }, + [TCA_SKBEDIT_MARK] = { .len = sizeof(u32) }, + [TCA_SKBEDIT_PTYPE] = { .len = sizeof(u16) }, + [TCA_SKBEDIT_MASK] = { .len = sizeof(u32) }, + [TCA_SKBEDIT_FLAGS] = { .len = sizeof(u64) }, + [TCA_SKBEDIT_QUEUE_MAPPING_MAX] = { .len = sizeof(u16) }, +}; + +static int tcf_skbedit_init(struct net *net, struct nlattr *nla, + struct nlattr *est, struct tc_action **a, + struct tcf_proto *tp, u32 act_flags, + struct netlink_ext_ack *extack) +{ + struct tc_action_net *tn = net_generic(net, act_skbedit_ops.net_id); + bool bind = act_flags & TCA_ACT_FLAGS_BIND; + struct tcf_skbedit_params *params_new; + struct nlattr *tb[TCA_SKBEDIT_MAX + 1]; + struct tcf_chain *goto_ch = NULL; + struct tc_skbedit *parm; + struct tcf_skbedit *d; + u32 flags = 0, *priority = NULL, *mark = NULL, *mask = NULL; + u16 *queue_mapping = NULL, *ptype = NULL; + u16 mapping_mod = 1; + bool exists = false; + int ret = 0, err; + u32 index; + + if (nla == NULL) + return -EINVAL; + + err = nla_parse_nested_deprecated(tb, TCA_SKBEDIT_MAX, nla, + skbedit_policy, NULL); + if (err < 0) + return err; + + if (tb[TCA_SKBEDIT_PARMS] == NULL) + return -EINVAL; + + if (tb[TCA_SKBEDIT_PRIORITY] != NULL) { + flags |= SKBEDIT_F_PRIORITY; + priority = nla_data(tb[TCA_SKBEDIT_PRIORITY]); + } + + if (tb[TCA_SKBEDIT_QUEUE_MAPPING] != NULL) { + if (is_tcf_skbedit_ingress(act_flags) && + !(act_flags & TCA_ACT_FLAGS_SKIP_SW)) { + NL_SET_ERR_MSG_MOD(extack, "\"queue_mapping\" option on receive side is hardware only, use skip_sw"); + return -EOPNOTSUPP; + } + flags |= SKBEDIT_F_QUEUE_MAPPING; + queue_mapping = nla_data(tb[TCA_SKBEDIT_QUEUE_MAPPING]); + } + + if (tb[TCA_SKBEDIT_PTYPE] != NULL) { + ptype = nla_data(tb[TCA_SKBEDIT_PTYPE]); + if (!skb_pkt_type_ok(*ptype)) + return -EINVAL; + flags |= SKBEDIT_F_PTYPE; + } + + if (tb[TCA_SKBEDIT_MARK] != NULL) { + flags |= SKBEDIT_F_MARK; + mark = nla_data(tb[TCA_SKBEDIT_MARK]); + } + + if (tb[TCA_SKBEDIT_MASK] != NULL) { + flags |= SKBEDIT_F_MASK; + mask = nla_data(tb[TCA_SKBEDIT_MASK]); + } + + if (tb[TCA_SKBEDIT_FLAGS] != NULL) { + u64 *pure_flags = nla_data(tb[TCA_SKBEDIT_FLAGS]); + + if (*pure_flags & SKBEDIT_F_TXQ_SKBHASH) { + u16 *queue_mapping_max; + + if (!tb[TCA_SKBEDIT_QUEUE_MAPPING] || + !tb[TCA_SKBEDIT_QUEUE_MAPPING_MAX]) { + NL_SET_ERR_MSG_MOD(extack, "Missing required range of queue_mapping."); + return -EINVAL; + } + + queue_mapping_max = + nla_data(tb[TCA_SKBEDIT_QUEUE_MAPPING_MAX]); + if (*queue_mapping_max < *queue_mapping) { + NL_SET_ERR_MSG_MOD(extack, "The range of queue_mapping is invalid, max < min."); + return -EINVAL; + } + + mapping_mod = *queue_mapping_max - *queue_mapping + 1; + flags |= SKBEDIT_F_TXQ_SKBHASH; + } + if (*pure_flags & SKBEDIT_F_INHERITDSFIELD) + flags |= SKBEDIT_F_INHERITDSFIELD; + } + + parm = nla_data(tb[TCA_SKBEDIT_PARMS]); + index = parm->index; + err = tcf_idr_check_alloc(tn, &index, a, bind); + if (err < 0) + return err; + exists = err; + if (exists && bind) + return 0; + + if (!flags) { + if (exists) + tcf_idr_release(*a, bind); + else + tcf_idr_cleanup(tn, index); + return -EINVAL; + } + + if (!exists) { + ret = tcf_idr_create(tn, index, est, a, + &act_skbedit_ops, bind, true, act_flags); + if (ret) { + tcf_idr_cleanup(tn, index); + return ret; + } + + d = to_skbedit(*a); + ret = ACT_P_CREATED; + } else { + d = to_skbedit(*a); + if (!(act_flags & TCA_ACT_FLAGS_REPLACE)) { + tcf_idr_release(*a, bind); + return -EEXIST; + } + } + err = tcf_action_check_ctrlact(parm->action, tp, &goto_ch, extack); + if (err < 0) + goto release_idr; + + params_new = kzalloc(sizeof(*params_new), GFP_KERNEL); + if (unlikely(!params_new)) { + err = -ENOMEM; + goto put_chain; + } + + params_new->flags = flags; + if (flags & SKBEDIT_F_PRIORITY) + params_new->priority = *priority; + if (flags & SKBEDIT_F_QUEUE_MAPPING) { + params_new->queue_mapping = *queue_mapping; + params_new->mapping_mod = mapping_mod; + } + if (flags & SKBEDIT_F_MARK) + params_new->mark = *mark; + if (flags & SKBEDIT_F_PTYPE) + params_new->ptype = *ptype; + /* default behaviour is to use all the bits */ + params_new->mask = 0xffffffff; + if (flags & SKBEDIT_F_MASK) + params_new->mask = *mask; + + spin_lock_bh(&d->tcf_lock); + goto_ch = tcf_action_set_ctrlact(*a, parm->action, goto_ch); + params_new = rcu_replace_pointer(d->params, params_new, + lockdep_is_held(&d->tcf_lock)); + spin_unlock_bh(&d->tcf_lock); + if (params_new) + kfree_rcu(params_new, rcu); + if (goto_ch) + tcf_chain_put_by_act(goto_ch); + + return ret; +put_chain: + if (goto_ch) + tcf_chain_put_by_act(goto_ch); +release_idr: + tcf_idr_release(*a, bind); + return err; +} + +static int tcf_skbedit_dump(struct sk_buff *skb, struct tc_action *a, + int bind, int ref) +{ + unsigned char *b = skb_tail_pointer(skb); + struct tcf_skbedit *d = to_skbedit(a); + struct tcf_skbedit_params *params; + struct tc_skbedit opt = { + .index = d->tcf_index, + .refcnt = refcount_read(&d->tcf_refcnt) - ref, + .bindcnt = atomic_read(&d->tcf_bindcnt) - bind, + }; + u64 pure_flags = 0; + struct tcf_t t; + + spin_lock_bh(&d->tcf_lock); + params = rcu_dereference_protected(d->params, + lockdep_is_held(&d->tcf_lock)); + opt.action = d->tcf_action; + + if (nla_put(skb, TCA_SKBEDIT_PARMS, sizeof(opt), &opt)) + goto nla_put_failure; + if ((params->flags & SKBEDIT_F_PRIORITY) && + nla_put_u32(skb, TCA_SKBEDIT_PRIORITY, params->priority)) + goto nla_put_failure; + if ((params->flags & SKBEDIT_F_QUEUE_MAPPING) && + nla_put_u16(skb, TCA_SKBEDIT_QUEUE_MAPPING, params->queue_mapping)) + goto nla_put_failure; + if ((params->flags & SKBEDIT_F_MARK) && + nla_put_u32(skb, TCA_SKBEDIT_MARK, params->mark)) + goto nla_put_failure; + if ((params->flags & SKBEDIT_F_PTYPE) && + nla_put_u16(skb, TCA_SKBEDIT_PTYPE, params->ptype)) + goto nla_put_failure; + if ((params->flags & SKBEDIT_F_MASK) && + nla_put_u32(skb, TCA_SKBEDIT_MASK, params->mask)) + goto nla_put_failure; + if (params->flags & SKBEDIT_F_INHERITDSFIELD) + pure_flags |= SKBEDIT_F_INHERITDSFIELD; + if (params->flags & SKBEDIT_F_TXQ_SKBHASH) { + if (nla_put_u16(skb, TCA_SKBEDIT_QUEUE_MAPPING_MAX, + params->queue_mapping + params->mapping_mod - 1)) + goto nla_put_failure; + + pure_flags |= SKBEDIT_F_TXQ_SKBHASH; + } + if (pure_flags != 0 && + nla_put(skb, TCA_SKBEDIT_FLAGS, sizeof(pure_flags), &pure_flags)) + goto nla_put_failure; + + tcf_tm_dump(&t, &d->tcf_tm); + if (nla_put_64bit(skb, TCA_SKBEDIT_TM, sizeof(t), &t, TCA_SKBEDIT_PAD)) + goto nla_put_failure; + spin_unlock_bh(&d->tcf_lock); + + return skb->len; + +nla_put_failure: + spin_unlock_bh(&d->tcf_lock); + nlmsg_trim(skb, b); + return -1; +} + +static void tcf_skbedit_cleanup(struct tc_action *a) +{ + struct tcf_skbedit *d = to_skbedit(a); + struct tcf_skbedit_params *params; + + params = rcu_dereference_protected(d->params, 1); + if (params) + kfree_rcu(params, rcu); +} + +static size_t tcf_skbedit_get_fill_size(const struct tc_action *act) +{ + return nla_total_size(sizeof(struct tc_skbedit)) + + nla_total_size(sizeof(u32)) /* TCA_SKBEDIT_PRIORITY */ + + nla_total_size(sizeof(u16)) /* TCA_SKBEDIT_QUEUE_MAPPING */ + + nla_total_size(sizeof(u16)) /* TCA_SKBEDIT_QUEUE_MAPPING_MAX */ + + nla_total_size(sizeof(u32)) /* TCA_SKBEDIT_MARK */ + + nla_total_size(sizeof(u16)) /* TCA_SKBEDIT_PTYPE */ + + nla_total_size(sizeof(u32)) /* TCA_SKBEDIT_MASK */ + + nla_total_size_64bit(sizeof(u64)); /* TCA_SKBEDIT_FLAGS */ +} + +static int tcf_skbedit_offload_act_setup(struct tc_action *act, void *entry_data, + u32 *index_inc, bool bind, + struct netlink_ext_ack *extack) +{ + if (bind) { + struct flow_action_entry *entry = entry_data; + + if (is_tcf_skbedit_mark(act)) { + entry->id = FLOW_ACTION_MARK; + entry->mark = tcf_skbedit_mark(act); + } else if (is_tcf_skbedit_ptype(act)) { + entry->id = FLOW_ACTION_PTYPE; + entry->ptype = tcf_skbedit_ptype(act); + } else if (is_tcf_skbedit_priority(act)) { + entry->id = FLOW_ACTION_PRIORITY; + entry->priority = tcf_skbedit_priority(act); + } else if (is_tcf_skbedit_tx_queue_mapping(act)) { + NL_SET_ERR_MSG_MOD(extack, "Offload not supported when \"queue_mapping\" option is used on transmit side"); + return -EOPNOTSUPP; + } else if (is_tcf_skbedit_rx_queue_mapping(act)) { + entry->id = FLOW_ACTION_RX_QUEUE_MAPPING; + entry->rx_queue = tcf_skbedit_rx_queue_mapping(act); + } else if (is_tcf_skbedit_inheritdsfield(act)) { + NL_SET_ERR_MSG_MOD(extack, "Offload not supported when \"inheritdsfield\" option is used"); + return -EOPNOTSUPP; + } else { + NL_SET_ERR_MSG_MOD(extack, "Unsupported skbedit option offload"); + return -EOPNOTSUPP; + } + *index_inc = 1; + } else { + struct flow_offload_action *fl_action = entry_data; + + if (is_tcf_skbedit_mark(act)) + fl_action->id = FLOW_ACTION_MARK; + else if (is_tcf_skbedit_ptype(act)) + fl_action->id = FLOW_ACTION_PTYPE; + else if (is_tcf_skbedit_priority(act)) + fl_action->id = FLOW_ACTION_PRIORITY; + else if (is_tcf_skbedit_rx_queue_mapping(act)) + fl_action->id = FLOW_ACTION_RX_QUEUE_MAPPING; + else + return -EOPNOTSUPP; + } + + return 0; +} + +static struct tc_action_ops act_skbedit_ops = { + .kind = "skbedit", + .id = TCA_ID_SKBEDIT, + .owner = THIS_MODULE, + .act = tcf_skbedit_act, + .stats_update = tcf_skbedit_stats_update, + .dump = tcf_skbedit_dump, + .init = tcf_skbedit_init, + .cleanup = tcf_skbedit_cleanup, + .get_fill_size = tcf_skbedit_get_fill_size, + .offload_act_setup = tcf_skbedit_offload_act_setup, + .size = sizeof(struct tcf_skbedit), +}; + +static __net_init int skbedit_init_net(struct net *net) +{ + struct tc_action_net *tn = net_generic(net, act_skbedit_ops.net_id); + + return tc_action_net_init(net, tn, &act_skbedit_ops); +} + +static void __net_exit skbedit_exit_net(struct list_head *net_list) +{ + tc_action_net_exit(net_list, act_skbedit_ops.net_id); +} + +static struct pernet_operations skbedit_net_ops = { + .init = skbedit_init_net, + .exit_batch = skbedit_exit_net, + .id = &act_skbedit_ops.net_id, + .size = sizeof(struct tc_action_net), +}; + +MODULE_AUTHOR("Alexander Duyck, <alexander.h.duyck@intel.com>"); +MODULE_DESCRIPTION("SKB Editing"); +MODULE_LICENSE("GPL"); + +static int __init skbedit_init_module(void) +{ + return tcf_register_action(&act_skbedit_ops, &skbedit_net_ops); +} + +static void __exit skbedit_cleanup_module(void) +{ + tcf_unregister_action(&act_skbedit_ops, &skbedit_net_ops); +} + +module_init(skbedit_init_module); +module_exit(skbedit_cleanup_module); |