From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- net/ipv6/xfrm6_tunnel.c | 405 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 405 insertions(+) create mode 100644 net/ipv6/xfrm6_tunnel.c (limited to 'net/ipv6/xfrm6_tunnel.c') diff --git a/net/ipv6/xfrm6_tunnel.c b/net/ipv6/xfrm6_tunnel.c new file mode 100644 index 000000000..1323f2f69 --- /dev/null +++ b/net/ipv6/xfrm6_tunnel.c @@ -0,0 +1,405 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C)2003,2004 USAGI/WIDE Project + * + * Authors Mitsuru KANDA + * YOSHIFUJI Hideaki + * + * Based on net/ipv4/xfrm4_tunnel.c + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define XFRM6_TUNNEL_SPI_BYADDR_HSIZE 256 +#define XFRM6_TUNNEL_SPI_BYSPI_HSIZE 256 + +#define XFRM6_TUNNEL_SPI_MIN 1 +#define XFRM6_TUNNEL_SPI_MAX 0xffffffff + +struct xfrm6_tunnel_net { + struct hlist_head spi_byaddr[XFRM6_TUNNEL_SPI_BYADDR_HSIZE]; + struct hlist_head spi_byspi[XFRM6_TUNNEL_SPI_BYSPI_HSIZE]; + u32 spi; +}; + +static unsigned int xfrm6_tunnel_net_id __read_mostly; +static inline struct xfrm6_tunnel_net *xfrm6_tunnel_pernet(struct net *net) +{ + return net_generic(net, xfrm6_tunnel_net_id); +} + +/* + * xfrm_tunnel_spi things are for allocating unique id ("spi") + * per xfrm_address_t. + */ +struct xfrm6_tunnel_spi { + struct hlist_node list_byaddr; + struct hlist_node list_byspi; + xfrm_address_t addr; + u32 spi; + refcount_t refcnt; + struct rcu_head rcu_head; +}; + +static DEFINE_SPINLOCK(xfrm6_tunnel_spi_lock); + +static struct kmem_cache *xfrm6_tunnel_spi_kmem __read_mostly; + +static inline unsigned int xfrm6_tunnel_spi_hash_byaddr(const xfrm_address_t *addr) +{ + unsigned int h; + + h = ipv6_addr_hash((const struct in6_addr *)addr); + h ^= h >> 16; + h ^= h >> 8; + h &= XFRM6_TUNNEL_SPI_BYADDR_HSIZE - 1; + + return h; +} + +static inline unsigned int xfrm6_tunnel_spi_hash_byspi(u32 spi) +{ + return spi % XFRM6_TUNNEL_SPI_BYSPI_HSIZE; +} + +static struct xfrm6_tunnel_spi *__xfrm6_tunnel_spi_lookup(struct net *net, const xfrm_address_t *saddr) +{ + struct xfrm6_tunnel_net *xfrm6_tn = xfrm6_tunnel_pernet(net); + struct xfrm6_tunnel_spi *x6spi; + + hlist_for_each_entry_rcu(x6spi, + &xfrm6_tn->spi_byaddr[xfrm6_tunnel_spi_hash_byaddr(saddr)], + list_byaddr, lockdep_is_held(&xfrm6_tunnel_spi_lock)) { + if (xfrm6_addr_equal(&x6spi->addr, saddr)) + return x6spi; + } + + return NULL; +} + +__be32 xfrm6_tunnel_spi_lookup(struct net *net, const xfrm_address_t *saddr) +{ + struct xfrm6_tunnel_spi *x6spi; + u32 spi; + + rcu_read_lock_bh(); + x6spi = __xfrm6_tunnel_spi_lookup(net, saddr); + spi = x6spi ? x6spi->spi : 0; + rcu_read_unlock_bh(); + return htonl(spi); +} +EXPORT_SYMBOL(xfrm6_tunnel_spi_lookup); + +static int __xfrm6_tunnel_spi_check(struct net *net, u32 spi) +{ + struct xfrm6_tunnel_net *xfrm6_tn = xfrm6_tunnel_pernet(net); + struct xfrm6_tunnel_spi *x6spi; + int index = xfrm6_tunnel_spi_hash_byspi(spi); + + hlist_for_each_entry(x6spi, + &xfrm6_tn->spi_byspi[index], + list_byspi) { + if (x6spi->spi == spi) + return -1; + } + return index; +} + +static u32 __xfrm6_tunnel_alloc_spi(struct net *net, xfrm_address_t *saddr) +{ + struct xfrm6_tunnel_net *xfrm6_tn = xfrm6_tunnel_pernet(net); + u32 spi; + struct xfrm6_tunnel_spi *x6spi; + int index; + + if (xfrm6_tn->spi < XFRM6_TUNNEL_SPI_MIN || + xfrm6_tn->spi >= XFRM6_TUNNEL_SPI_MAX) + xfrm6_tn->spi = XFRM6_TUNNEL_SPI_MIN; + else + xfrm6_tn->spi++; + + for (spi = xfrm6_tn->spi; spi <= XFRM6_TUNNEL_SPI_MAX; spi++) { + index = __xfrm6_tunnel_spi_check(net, spi); + if (index >= 0) + goto alloc_spi; + + if (spi == XFRM6_TUNNEL_SPI_MAX) + break; + } + for (spi = XFRM6_TUNNEL_SPI_MIN; spi < xfrm6_tn->spi; spi++) { + index = __xfrm6_tunnel_spi_check(net, spi); + if (index >= 0) + goto alloc_spi; + } + spi = 0; + goto out; +alloc_spi: + xfrm6_tn->spi = spi; + x6spi = kmem_cache_alloc(xfrm6_tunnel_spi_kmem, GFP_ATOMIC); + if (!x6spi) + goto out; + + memcpy(&x6spi->addr, saddr, sizeof(x6spi->addr)); + x6spi->spi = spi; + refcount_set(&x6spi->refcnt, 1); + + hlist_add_head_rcu(&x6spi->list_byspi, &xfrm6_tn->spi_byspi[index]); + + index = xfrm6_tunnel_spi_hash_byaddr(saddr); + hlist_add_head_rcu(&x6spi->list_byaddr, &xfrm6_tn->spi_byaddr[index]); +out: + return spi; +} + +__be32 xfrm6_tunnel_alloc_spi(struct net *net, xfrm_address_t *saddr) +{ + struct xfrm6_tunnel_spi *x6spi; + u32 spi; + + spin_lock_bh(&xfrm6_tunnel_spi_lock); + x6spi = __xfrm6_tunnel_spi_lookup(net, saddr); + if (x6spi) { + refcount_inc(&x6spi->refcnt); + spi = x6spi->spi; + } else + spi = __xfrm6_tunnel_alloc_spi(net, saddr); + spin_unlock_bh(&xfrm6_tunnel_spi_lock); + + return htonl(spi); +} +EXPORT_SYMBOL(xfrm6_tunnel_alloc_spi); + +static void x6spi_destroy_rcu(struct rcu_head *head) +{ + kmem_cache_free(xfrm6_tunnel_spi_kmem, + container_of(head, struct xfrm6_tunnel_spi, rcu_head)); +} + +static void xfrm6_tunnel_free_spi(struct net *net, xfrm_address_t *saddr) +{ + struct xfrm6_tunnel_net *xfrm6_tn = xfrm6_tunnel_pernet(net); + struct xfrm6_tunnel_spi *x6spi; + struct hlist_node *n; + + spin_lock_bh(&xfrm6_tunnel_spi_lock); + + hlist_for_each_entry_safe(x6spi, n, + &xfrm6_tn->spi_byaddr[xfrm6_tunnel_spi_hash_byaddr(saddr)], + list_byaddr) + { + if (xfrm6_addr_equal(&x6spi->addr, saddr)) { + if (refcount_dec_and_test(&x6spi->refcnt)) { + hlist_del_rcu(&x6spi->list_byaddr); + hlist_del_rcu(&x6spi->list_byspi); + call_rcu(&x6spi->rcu_head, x6spi_destroy_rcu); + break; + } + } + } + spin_unlock_bh(&xfrm6_tunnel_spi_lock); +} + +static int xfrm6_tunnel_output(struct xfrm_state *x, struct sk_buff *skb) +{ + skb_push(skb, -skb_network_offset(skb)); + return 0; +} + +static int xfrm6_tunnel_input(struct xfrm_state *x, struct sk_buff *skb) +{ + return skb_network_header(skb)[IP6CB(skb)->nhoff]; +} + +static int xfrm6_tunnel_rcv(struct sk_buff *skb) +{ + struct net *net = dev_net(skb->dev); + const struct ipv6hdr *iph = ipv6_hdr(skb); + __be32 spi; + + spi = xfrm6_tunnel_spi_lookup(net, (const xfrm_address_t *)&iph->saddr); + return xfrm6_rcv_spi(skb, IPPROTO_IPV6, spi, NULL); +} + +static int xfrm6_tunnel_err(struct sk_buff *skb, struct inet6_skb_parm *opt, + u8 type, u8 code, int offset, __be32 info) +{ + /* xfrm6_tunnel native err handling */ + switch (type) { + case ICMPV6_DEST_UNREACH: + switch (code) { + case ICMPV6_NOROUTE: + case ICMPV6_ADM_PROHIBITED: + case ICMPV6_NOT_NEIGHBOUR: + case ICMPV6_ADDR_UNREACH: + case ICMPV6_PORT_UNREACH: + default: + break; + } + break; + case ICMPV6_PKT_TOOBIG: + break; + case ICMPV6_TIME_EXCEED: + switch (code) { + case ICMPV6_EXC_HOPLIMIT: + break; + case ICMPV6_EXC_FRAGTIME: + default: + break; + } + break; + case ICMPV6_PARAMPROB: + switch (code) { + case ICMPV6_HDR_FIELD: break; + case ICMPV6_UNK_NEXTHDR: break; + case ICMPV6_UNK_OPTION: break; + } + break; + default: + break; + } + + return 0; +} + +static int xfrm6_tunnel_init_state(struct xfrm_state *x, struct netlink_ext_ack *extack) +{ + if (x->props.mode != XFRM_MODE_TUNNEL) { + NL_SET_ERR_MSG(extack, "IPv6 tunnel can only be used with tunnel mode"); + return -EINVAL; + } + + if (x->encap) { + NL_SET_ERR_MSG(extack, "IPv6 tunnel is not compatible with encapsulation"); + return -EINVAL; + } + + x->props.header_len = sizeof(struct ipv6hdr); + + return 0; +} + +static void xfrm6_tunnel_destroy(struct xfrm_state *x) +{ + struct net *net = xs_net(x); + + xfrm6_tunnel_free_spi(net, (xfrm_address_t *)&x->props.saddr); +} + +static const struct xfrm_type xfrm6_tunnel_type = { + .owner = THIS_MODULE, + .proto = IPPROTO_IPV6, + .init_state = xfrm6_tunnel_init_state, + .destructor = xfrm6_tunnel_destroy, + .input = xfrm6_tunnel_input, + .output = xfrm6_tunnel_output, +}; + +static struct xfrm6_tunnel xfrm6_tunnel_handler __read_mostly = { + .handler = xfrm6_tunnel_rcv, + .err_handler = xfrm6_tunnel_err, + .priority = 3, +}; + +static struct xfrm6_tunnel xfrm46_tunnel_handler __read_mostly = { + .handler = xfrm6_tunnel_rcv, + .err_handler = xfrm6_tunnel_err, + .priority = 3, +}; + +static int __net_init xfrm6_tunnel_net_init(struct net *net) +{ + struct xfrm6_tunnel_net *xfrm6_tn = xfrm6_tunnel_pernet(net); + unsigned int i; + + for (i = 0; i < XFRM6_TUNNEL_SPI_BYADDR_HSIZE; i++) + INIT_HLIST_HEAD(&xfrm6_tn->spi_byaddr[i]); + for (i = 0; i < XFRM6_TUNNEL_SPI_BYSPI_HSIZE; i++) + INIT_HLIST_HEAD(&xfrm6_tn->spi_byspi[i]); + xfrm6_tn->spi = 0; + + return 0; +} + +static void __net_exit xfrm6_tunnel_net_exit(struct net *net) +{ + struct xfrm6_tunnel_net *xfrm6_tn = xfrm6_tunnel_pernet(net); + unsigned int i; + + xfrm_flush_gc(); + xfrm_state_flush(net, 0, false, true); + + for (i = 0; i < XFRM6_TUNNEL_SPI_BYADDR_HSIZE; i++) + WARN_ON_ONCE(!hlist_empty(&xfrm6_tn->spi_byaddr[i])); + + for (i = 0; i < XFRM6_TUNNEL_SPI_BYSPI_HSIZE; i++) + WARN_ON_ONCE(!hlist_empty(&xfrm6_tn->spi_byspi[i])); +} + +static struct pernet_operations xfrm6_tunnel_net_ops = { + .init = xfrm6_tunnel_net_init, + .exit = xfrm6_tunnel_net_exit, + .id = &xfrm6_tunnel_net_id, + .size = sizeof(struct xfrm6_tunnel_net), +}; + +static int __init xfrm6_tunnel_init(void) +{ + int rv; + + xfrm6_tunnel_spi_kmem = kmem_cache_create("xfrm6_tunnel_spi", + sizeof(struct xfrm6_tunnel_spi), + 0, SLAB_HWCACHE_ALIGN, + NULL); + if (!xfrm6_tunnel_spi_kmem) + return -ENOMEM; + rv = register_pernet_subsys(&xfrm6_tunnel_net_ops); + if (rv < 0) + goto out_pernet; + rv = xfrm_register_type(&xfrm6_tunnel_type, AF_INET6); + if (rv < 0) + goto out_type; + rv = xfrm6_tunnel_register(&xfrm6_tunnel_handler, AF_INET6); + if (rv < 0) + goto out_xfrm6; + rv = xfrm6_tunnel_register(&xfrm46_tunnel_handler, AF_INET); + if (rv < 0) + goto out_xfrm46; + return 0; + +out_xfrm46: + xfrm6_tunnel_deregister(&xfrm6_tunnel_handler, AF_INET6); +out_xfrm6: + xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6); +out_type: + unregister_pernet_subsys(&xfrm6_tunnel_net_ops); +out_pernet: + kmem_cache_destroy(xfrm6_tunnel_spi_kmem); + return rv; +} + +static void __exit xfrm6_tunnel_fini(void) +{ + xfrm6_tunnel_deregister(&xfrm46_tunnel_handler, AF_INET); + xfrm6_tunnel_deregister(&xfrm6_tunnel_handler, AF_INET6); + xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6); + unregister_pernet_subsys(&xfrm6_tunnel_net_ops); + /* Someone maybe has gotten the xfrm6_tunnel_spi. + * So need to wait it. + */ + rcu_barrier(); + kmem_cache_destroy(xfrm6_tunnel_spi_kmem); +} + +module_init(xfrm6_tunnel_init); +module_exit(xfrm6_tunnel_fini); +MODULE_LICENSE("GPL"); +MODULE_ALIAS_XFRM_TYPE(AF_INET6, XFRM_PROTO_IPV6); -- cgit v1.2.3