diff options
Diffstat (limited to 'net/xfrm/xfrm_interface.c')
-rw-r--r-- | net/xfrm/xfrm_interface.c | 425 |
1 files changed, 348 insertions, 77 deletions
diff --git a/net/xfrm/xfrm_interface.c b/net/xfrm/xfrm_interface.c index 3361e3ac5714..5a67b120c4db 100644 --- a/net/xfrm/xfrm_interface.c +++ b/net/xfrm/xfrm_interface.c @@ -37,9 +37,11 @@ #include <net/ip.h> #include <net/ipv6.h> #include <net/ip6_route.h> +#include <net/ip_tunnels.h> #include <net/addrconf.h> #include <net/xfrm.h> #include <net/net_namespace.h> +#include <net/dst_metadata.h> #include <net/netns/generic.h> #include <linux/etherdevice.h> @@ -47,38 +49,135 @@ static int xfrmi_dev_init(struct net_device *dev); static void xfrmi_dev_setup(struct net_device *dev); static struct rtnl_link_ops xfrmi_link_ops __read_mostly; static unsigned int xfrmi_net_id __read_mostly; +static const struct net_device_ops xfrmi_netdev_ops; + +#define XFRMI_HASH_BITS 8 +#define XFRMI_HASH_SIZE BIT(XFRMI_HASH_BITS) struct xfrmi_net { /* lists for storing interfaces in use */ - struct xfrm_if __rcu *xfrmi[1]; + struct xfrm_if __rcu *xfrmi[XFRMI_HASH_SIZE]; + struct xfrm_if __rcu *collect_md_xfrmi; +}; + +static const struct nla_policy xfrm_lwt_policy[LWT_XFRM_MAX + 1] = { + [LWT_XFRM_IF_ID] = NLA_POLICY_MIN(NLA_U32, 1), + [LWT_XFRM_LINK] = NLA_POLICY_MIN(NLA_U32, 1), +}; + +static void xfrmi_destroy_state(struct lwtunnel_state *lwt) +{ +} + +static int xfrmi_build_state(struct net *net, struct nlattr *nla, + unsigned int family, const void *cfg, + struct lwtunnel_state **ts, + struct netlink_ext_ack *extack) +{ + struct nlattr *tb[LWT_XFRM_MAX + 1]; + struct lwtunnel_state *new_state; + struct xfrm_md_info *info; + int ret; + + ret = nla_parse_nested(tb, LWT_XFRM_MAX, nla, xfrm_lwt_policy, extack); + if (ret < 0) + return ret; + + if (!tb[LWT_XFRM_IF_ID]) { + NL_SET_ERR_MSG(extack, "if_id must be set"); + return -EINVAL; + } + + new_state = lwtunnel_state_alloc(sizeof(*info)); + if (!new_state) { + NL_SET_ERR_MSG(extack, "failed to create encap info"); + return -ENOMEM; + } + + new_state->type = LWTUNNEL_ENCAP_XFRM; + + info = lwt_xfrm_info(new_state); + + info->if_id = nla_get_u32(tb[LWT_XFRM_IF_ID]); + + if (tb[LWT_XFRM_LINK]) + info->link = nla_get_u32(tb[LWT_XFRM_LINK]); + + *ts = new_state; + return 0; +} + +static int xfrmi_fill_encap_info(struct sk_buff *skb, + struct lwtunnel_state *lwt) +{ + struct xfrm_md_info *info = lwt_xfrm_info(lwt); + + if (nla_put_u32(skb, LWT_XFRM_IF_ID, info->if_id) || + (info->link && nla_put_u32(skb, LWT_XFRM_LINK, info->link))) + return -EMSGSIZE; + + return 0; +} + +static int xfrmi_encap_nlsize(struct lwtunnel_state *lwtstate) +{ + return nla_total_size(sizeof(u32)) + /* LWT_XFRM_IF_ID */ + nla_total_size(sizeof(u32)); /* LWT_XFRM_LINK */ +} + +static int xfrmi_encap_cmp(struct lwtunnel_state *a, struct lwtunnel_state *b) +{ + struct xfrm_md_info *a_info = lwt_xfrm_info(a); + struct xfrm_md_info *b_info = lwt_xfrm_info(b); + + return memcmp(a_info, b_info, sizeof(*a_info)); +} + +static const struct lwtunnel_encap_ops xfrmi_encap_ops = { + .build_state = xfrmi_build_state, + .destroy_state = xfrmi_destroy_state, + .fill_encap = xfrmi_fill_encap_info, + .get_encap_size = xfrmi_encap_nlsize, + .cmp_encap = xfrmi_encap_cmp, + .owner = THIS_MODULE, }; #define for_each_xfrmi_rcu(start, xi) \ for (xi = rcu_dereference(start); xi; xi = rcu_dereference(xi->next)) +static u32 xfrmi_hash(u32 if_id) +{ + return hash_32(if_id, XFRMI_HASH_BITS); +} + static struct xfrm_if *xfrmi_lookup(struct net *net, struct xfrm_state *x) { struct xfrmi_net *xfrmn = net_generic(net, xfrmi_net_id); struct xfrm_if *xi; - for_each_xfrmi_rcu(xfrmn->xfrmi[0], xi) { + for_each_xfrmi_rcu(xfrmn->xfrmi[xfrmi_hash(x->if_id)], xi) { if (x->if_id == xi->p.if_id && (xi->dev->flags & IFF_UP)) return xi; } + xi = rcu_dereference(xfrmn->collect_md_xfrmi); + if (xi && (xi->dev->flags & IFF_UP)) + return xi; + return NULL; } -static struct xfrm_if *xfrmi_decode_session(struct sk_buff *skb, - unsigned short family) +static bool xfrmi_decode_session(struct sk_buff *skb, + unsigned short family, + struct xfrm_if_decode_session_result *res) { - struct xfrmi_net *xfrmn; + struct net_device *dev; struct xfrm_if *xi; int ifindex = 0; if (!secpath_exists(skb) || !skb->dev) - return NULL; + return false; switch (family) { case AF_INET6: @@ -88,23 +187,33 @@ static struct xfrm_if *xfrmi_decode_session(struct sk_buff *skb, ifindex = inet_sdif(skb); break; } - if (!ifindex) - ifindex = skb->dev->ifindex; - xfrmn = net_generic(xs_net(xfrm_input_state(skb)), xfrmi_net_id); + if (ifindex) { + struct net *net = xs_net(xfrm_input_state(skb)); - for_each_xfrmi_rcu(xfrmn->xfrmi[0], xi) { - if (ifindex == xi->dev->ifindex && - (xi->dev->flags & IFF_UP)) - return xi; + dev = dev_get_by_index_rcu(net, ifindex); + } else { + dev = skb->dev; } - return NULL; + if (!dev || !(dev->flags & IFF_UP)) + return false; + if (dev->netdev_ops != &xfrmi_netdev_ops) + return false; + + xi = netdev_priv(dev); + res->net = xi->net; + + if (xi->p.collect_md) + res->if_id = xfrm_input_state(skb)->if_id; + else + res->if_id = xi->p.if_id; + return true; } static void xfrmi_link(struct xfrmi_net *xfrmn, struct xfrm_if *xi) { - struct xfrm_if __rcu **xip = &xfrmn->xfrmi[0]; + struct xfrm_if __rcu **xip = &xfrmn->xfrmi[xfrmi_hash(xi->p.if_id)]; rcu_assign_pointer(xi->next , rtnl_dereference(*xip)); rcu_assign_pointer(*xip, xi); @@ -115,7 +224,7 @@ static void xfrmi_unlink(struct xfrmi_net *xfrmn, struct xfrm_if *xi) struct xfrm_if __rcu **xip; struct xfrm_if *iter; - for (xip = &xfrmn->xfrmi[0]; + for (xip = &xfrmn->xfrmi[xfrmi_hash(xi->p.if_id)]; (iter = rtnl_dereference(*xip)) != NULL; xip = &iter->next) { if (xi == iter) { @@ -145,8 +254,10 @@ static int xfrmi_create(struct net_device *dev) if (err < 0) goto out; - dev_hold(dev); - xfrmi_link(xfrmn, xi); + if (xi->p.collect_md) + rcu_assign_pointer(xfrmn->collect_md_xfrmi, xi); + else + xfrmi_link(xfrmn, xi); return 0; @@ -160,7 +271,7 @@ static struct xfrm_if *xfrmi_locate(struct net *net, struct xfrm_if_parms *p) struct xfrm_if *xi; struct xfrmi_net *xfrmn = net_generic(net, xfrmi_net_id); - for (xip = &xfrmn->xfrmi[0]; + for (xip = &xfrmn->xfrmi[xfrmi_hash(p->if_id)]; (xi = rtnl_dereference(*xip)) != NULL; xip = &xi->next) if (xi->p.if_id == p->if_id) @@ -174,13 +285,15 @@ static void xfrmi_dev_uninit(struct net_device *dev) struct xfrm_if *xi = netdev_priv(dev); struct xfrmi_net *xfrmn = net_generic(xi->net, xfrmi_net_id); - xfrmi_unlink(xfrmn, xi); - dev_put(dev); + if (xi->p.collect_md) + RCU_INIT_POINTER(xfrmn->collect_md_xfrmi, NULL); + else + xfrmi_unlink(xfrmn, xi); } static void xfrmi_scrub_packet(struct sk_buff *skb, bool xnet) { - skb->tstamp = 0; + skb_clear_tstamp(skb); skb->pkt_type = PACKET_HOST; skb->skb_iif = 0; skb->ignore_df = 0; @@ -200,11 +313,11 @@ static void xfrmi_scrub_packet(struct sk_buff *skb, bool xnet) static int xfrmi_rcv_cb(struct sk_buff *skb, int err) { const struct xfrm_mode *inner_mode; - struct pcpu_sw_netstats *tstats; struct net_device *dev; struct xfrm_state *x; struct xfrm_if *xi; bool xnet; + int link; if (err && !secpath_exists(skb)) return 0; @@ -215,6 +328,7 @@ static int xfrmi_rcv_cb(struct sk_buff *skb, int err) if (!xi) return 1; + link = skb->dev->ifindex; dev = xi->dev; skb->dev = dev; @@ -245,13 +359,18 @@ static int xfrmi_rcv_cb(struct sk_buff *skb, int err) } xfrmi_scrub_packet(skb, xnet); + if (xi->p.collect_md) { + struct metadata_dst *md_dst; - tstats = this_cpu_ptr(dev->tstats); + md_dst = metadata_dst_alloc(0, METADATA_XFRM, GFP_ATOMIC); + if (!md_dst) + return -ENOMEM; - u64_stats_update_begin(&tstats->syncp); - tstats->rx_packets++; - tstats->rx_bytes += skb->len; - u64_stats_update_end(&tstats->syncp); + md_dst->u.xfrm_info.if_id = x->if_id; + md_dst->u.xfrm_info.link = link; + skb_dst_set(skb, (struct dst_entry *)md_dst); + } + dev_sw_netstats_rx_add(dev, skb->len); return 0; } @@ -266,10 +385,23 @@ xfrmi_xmit2(struct sk_buff *skb, struct net_device *dev, struct flowi *fl) struct net_device *tdev; struct xfrm_state *x; int err = -1; + u32 if_id; int mtu; + if (xi->p.collect_md) { + struct xfrm_md_info *md_info = skb_xfrm_md_info(skb); + + if (unlikely(!md_info)) + return -EINVAL; + + if_id = md_info->if_id; + fl->flowi_oif = md_info->link; + } else { + if_id = xi->p.if_id; + } + dst_hold(dst); - dst = xfrm_lookup_with_ifid(xi->net, dst, fl, NULL, 0, xi->p.if_id); + dst = xfrm_lookup_with_ifid(xi->net, dst, fl, NULL, 0, if_id); if (IS_ERR(dst)) { err = PTR_ERR(dst); dst = NULL; @@ -280,7 +412,7 @@ xfrmi_xmit2(struct sk_buff *skb, struct net_device *dev, struct flowi *fl) if (!x) goto tx_err_link_failure; - if (x->if_id != xi->p.if_id) + if (x->if_id != if_id) goto tx_err_link_failure; tdev = dst->dev; @@ -293,15 +425,21 @@ xfrmi_xmit2(struct sk_buff *skb, struct net_device *dev, struct flowi *fl) } mtu = dst_mtu(dst); - if (!skb->ignore_df && skb->len > mtu) { + if ((!skb_is_gso(skb) && skb->len > mtu) || + (skb_is_gso(skb) && !skb_gso_validate_network_len(skb, mtu))) { skb_dst_update_pmtu_no_confirm(skb, mtu); if (skb->protocol == htons(ETH_P_IPV6)) { if (mtu < IPV6_MIN_MTU) mtu = IPV6_MIN_MTU; - icmpv6_ndo_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu); + if (skb->len > 1280) + icmpv6_ndo_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu); + else + goto xmit; } else { + if (!(ip_hdr(skb)->frag_off & htons(IP_DF))) + goto xmit; icmp_ndo_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED, htonl(mtu)); } @@ -310,18 +448,14 @@ xfrmi_xmit2(struct sk_buff *skb, struct net_device *dev, struct flowi *fl) return -EMSGSIZE; } +xmit: xfrmi_scrub_packet(skb, !net_eq(xi->net, dev_net(dev))); skb_dst_set(skb, dst); skb->dev = tdev; err = dst_output(xi->net, skb->sk, skb); if (net_xmit_eval(err) == 0) { - struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats); - - u64_stats_update_begin(&tstats->syncp); - tstats->tx_bytes += length; - tstats->tx_packets++; - u64_stats_update_end(&tstats->syncp); + dev_sw_netstats_tx_add(dev, 1, length); } else { stats->tx_errors++; stats->tx_aborted_errors++; @@ -430,6 +564,7 @@ static int xfrmi4_err(struct sk_buff *skb, u32 info) case ICMP_DEST_UNREACH: if (icmp_hdr(skb)->code != ICMP_FRAG_NEEDED) return 0; + break; case ICMP_REDIRECT: break; default: @@ -535,35 +670,6 @@ static int xfrmi_update(struct xfrm_if *xi, struct xfrm_if_parms *p) return err; } -static void xfrmi_get_stats64(struct net_device *dev, - struct rtnl_link_stats64 *s) -{ - int cpu; - - for_each_possible_cpu(cpu) { - struct pcpu_sw_netstats *stats; - struct pcpu_sw_netstats tmp; - int start; - - stats = per_cpu_ptr(dev->tstats, cpu); - do { - start = u64_stats_fetch_begin_irq(&stats->syncp); - tmp.rx_packets = stats->rx_packets; - tmp.rx_bytes = stats->rx_bytes; - tmp.tx_packets = stats->tx_packets; - tmp.tx_bytes = stats->tx_bytes; - } while (u64_stats_fetch_retry_irq(&stats->syncp, start)); - - s->rx_packets += tmp.rx_packets; - s->rx_bytes += tmp.rx_bytes; - s->tx_packets += tmp.tx_packets; - s->tx_bytes += tmp.tx_bytes; - } - - s->rx_dropped = dev->stats.rx_dropped; - s->tx_dropped = dev->stats.tx_dropped; -} - static int xfrmi_get_iflink(const struct net_device *dev) { struct xfrm_if *xi = netdev_priv(dev); @@ -571,18 +677,18 @@ static int xfrmi_get_iflink(const struct net_device *dev) return xi->p.link; } - static const struct net_device_ops xfrmi_netdev_ops = { .ndo_init = xfrmi_dev_init, .ndo_uninit = xfrmi_dev_uninit, .ndo_start_xmit = xfrmi_xmit, - .ndo_get_stats64 = xfrmi_get_stats64, + .ndo_get_stats64 = dev_get_tstats64, .ndo_get_iflink = xfrmi_get_iflink, }; static void xfrmi_dev_setup(struct net_device *dev) { dev->netdev_ops = &xfrmi_netdev_ops; + dev->header_ops = &ip_tunnel_header_ops; dev->type = ARPHRD_NONE; dev->mtu = ETH_DATA_LEN; dev->min_mtu = ETH_MIN_MTU; @@ -595,6 +701,11 @@ static void xfrmi_dev_setup(struct net_device *dev) eth_broadcast_addr(dev->broadcast); } +#define XFRMI_FEATURES (NETIF_F_SG | \ + NETIF_F_FRAGLIST | \ + NETIF_F_GSO_SOFTWARE | \ + NETIF_F_HW_CSUM) + static int xfrmi_dev_init(struct net_device *dev) { struct xfrm_if *xi = netdev_priv(dev); @@ -612,6 +723,8 @@ static int xfrmi_dev_init(struct net_device *dev) } dev->features |= NETIF_F_LLTX; + dev->features |= XFRMI_FEATURES; + dev->hw_features |= XFRMI_FEATURES; if (phydev) { dev->needed_headroom = phydev->needed_headroom; @@ -649,6 +762,9 @@ static void xfrmi_netlink_parms(struct nlattr *data[], if (data[IFLA_XFRM_IF_ID]) parms->if_id = nla_get_u32(data[IFLA_XFRM_IF_ID]); + + if (data[IFLA_XFRM_COLLECT_METADATA]) + parms->collect_md = true; } static int xfrmi_newlink(struct net *src_net, struct net_device *dev, @@ -656,14 +772,32 @@ static int xfrmi_newlink(struct net *src_net, struct net_device *dev, struct netlink_ext_ack *extack) { struct net *net = dev_net(dev); - struct xfrm_if_parms p; + struct xfrm_if_parms p = {}; struct xfrm_if *xi; int err; xfrmi_netlink_parms(data, &p); - xi = xfrmi_locate(net, &p); - if (xi) - return -EEXIST; + if (p.collect_md) { + struct xfrmi_net *xfrmn = net_generic(net, xfrmi_net_id); + + if (p.link || p.if_id) { + NL_SET_ERR_MSG(extack, "link and if_id must be zero"); + return -EINVAL; + } + + if (rtnl_dereference(xfrmn->collect_md_xfrmi)) + return -EEXIST; + + } else { + if (!p.if_id) { + NL_SET_ERR_MSG(extack, "if_id must be non zero"); + return -EINVAL; + } + + xi = xfrmi_locate(net, &p); + if (xi) + return -EEXIST; + } xi = netdev_priv(dev); xi->p = p; @@ -685,15 +819,30 @@ static int xfrmi_changelink(struct net_device *dev, struct nlattr *tb[], { struct xfrm_if *xi = netdev_priv(dev); struct net *net = xi->net; - struct xfrm_if_parms p; + struct xfrm_if_parms p = {}; xfrmi_netlink_parms(data, &p); + if (!p.if_id) { + NL_SET_ERR_MSG(extack, "if_id must be non zero"); + return -EINVAL; + } + + if (p.collect_md) { + NL_SET_ERR_MSG(extack, "collect_md can't be changed"); + return -EINVAL; + } + xi = xfrmi_locate(net, &p); if (!xi) { xi = netdev_priv(dev); } else { if (xi->dev != dev) return -EEXIST; + if (xi->p.collect_md) { + NL_SET_ERR_MSG(extack, + "device can't be changed to collect_md"); + return -EINVAL; + } } return xfrmi_update(xi, &p); @@ -706,6 +855,8 @@ static size_t xfrmi_get_size(const struct net_device *dev) nla_total_size(4) + /* IFLA_XFRM_IF_ID */ nla_total_size(4) + + /* IFLA_XFRM_COLLECT_METADATA */ + nla_total_size(0) + 0; } @@ -715,7 +866,8 @@ static int xfrmi_fill_info(struct sk_buff *skb, const struct net_device *dev) struct xfrm_if_parms *parm = &xi->p; if (nla_put_u32(skb, IFLA_XFRM_LINK, parm->link) || - nla_put_u32(skb, IFLA_XFRM_IF_ID, parm->if_id)) + nla_put_u32(skb, IFLA_XFRM_IF_ID, parm->if_id) || + (xi->p.collect_md && nla_put_flag(skb, IFLA_XFRM_COLLECT_METADATA))) goto nla_put_failure; return 0; @@ -731,8 +883,10 @@ static struct net *xfrmi_get_link_net(const struct net_device *dev) } static const struct nla_policy xfrmi_policy[IFLA_XFRM_MAX + 1] = { - [IFLA_XFRM_LINK] = { .type = NLA_U32 }, - [IFLA_XFRM_IF_ID] = { .type = NLA_U32 }, + [IFLA_XFRM_UNSPEC] = { .strict_start_type = IFLA_XFRM_COLLECT_METADATA }, + [IFLA_XFRM_LINK] = { .type = NLA_U32 }, + [IFLA_XFRM_IF_ID] = { .type = NLA_U32 }, + [IFLA_XFRM_COLLECT_METADATA] = { .type = NLA_FLAG }, }; static struct rtnl_link_ops xfrmi_link_ops __read_mostly = { @@ -750,13 +904,41 @@ static struct rtnl_link_ops xfrmi_link_ops __read_mostly = { .get_link_net = xfrmi_get_link_net, }; +static void __net_exit xfrmi_exit_batch_net(struct list_head *net_exit_list) +{ + struct net *net; + LIST_HEAD(list); + + rtnl_lock(); + list_for_each_entry(net, net_exit_list, exit_list) { + struct xfrmi_net *xfrmn = net_generic(net, xfrmi_net_id); + struct xfrm_if __rcu **xip; + struct xfrm_if *xi; + int i; + + for (i = 0; i < XFRMI_HASH_SIZE; i++) { + for (xip = &xfrmn->xfrmi[i]; + (xi = rtnl_dereference(*xip)) != NULL; + xip = &xi->next) + unregister_netdevice_queue(xi->dev, &list); + } + xi = rtnl_dereference(xfrmn->collect_md_xfrmi); + if (xi) + unregister_netdevice_queue(xi->dev, &list); + } + unregister_netdevice_many(&list); + rtnl_unlock(); +} + static struct pernet_operations xfrmi_net_ops = { + .exit_batch = xfrmi_exit_batch_net, .id = &xfrmi_net_id, .size = sizeof(struct xfrmi_net), }; static struct xfrm6_protocol xfrmi_esp6_protocol __read_mostly = { .handler = xfrm6_rcv, + .input_handler = xfrm_input, .cb_handler = xfrmi_rcv_cb, .err_handler = xfrmi6_err, .priority = 10, @@ -764,6 +946,7 @@ static struct xfrm6_protocol xfrmi_esp6_protocol __read_mostly = { static struct xfrm6_protocol xfrmi_ah6_protocol __read_mostly = { .handler = xfrm6_rcv, + .input_handler = xfrm_input, .cb_handler = xfrmi_rcv_cb, .err_handler = xfrmi6_err, .priority = 10, @@ -771,11 +954,39 @@ static struct xfrm6_protocol xfrmi_ah6_protocol __read_mostly = { static struct xfrm6_protocol xfrmi_ipcomp6_protocol __read_mostly = { .handler = xfrm6_rcv, + .input_handler = xfrm_input, .cb_handler = xfrmi_rcv_cb, .err_handler = xfrmi6_err, .priority = 10, }; +#if IS_REACHABLE(CONFIG_INET6_XFRM_TUNNEL) +static int xfrmi6_rcv_tunnel(struct sk_buff *skb) +{ + const xfrm_address_t *saddr; + __be32 spi; + + saddr = (const xfrm_address_t *)&ipv6_hdr(skb)->saddr; + spi = xfrm6_tunnel_spi_lookup(dev_net(skb->dev), saddr); + + return xfrm6_rcv_spi(skb, IPPROTO_IPV6, spi, NULL); +} + +static struct xfrm6_tunnel xfrmi_ipv6_handler __read_mostly = { + .handler = xfrmi6_rcv_tunnel, + .cb_handler = xfrmi_rcv_cb, + .err_handler = xfrmi6_err, + .priority = 2, +}; + +static struct xfrm6_tunnel xfrmi_ip6ip_handler __read_mostly = { + .handler = xfrmi6_rcv_tunnel, + .cb_handler = xfrmi_rcv_cb, + .err_handler = xfrmi6_err, + .priority = 2, +}; +#endif + static struct xfrm4_protocol xfrmi_esp4_protocol __read_mostly = { .handler = xfrm4_rcv, .input_handler = xfrm_input, @@ -800,6 +1011,27 @@ static struct xfrm4_protocol xfrmi_ipcomp4_protocol __read_mostly = { .priority = 10, }; +#if IS_REACHABLE(CONFIG_INET_XFRM_TUNNEL) +static int xfrmi4_rcv_tunnel(struct sk_buff *skb) +{ + return xfrm4_rcv_spi(skb, IPPROTO_IPIP, ip_hdr(skb)->saddr); +} + +static struct xfrm_tunnel xfrmi_ipip_handler __read_mostly = { + .handler = xfrmi4_rcv_tunnel, + .cb_handler = xfrmi_rcv_cb, + .err_handler = xfrmi4_err, + .priority = 3, +}; + +static struct xfrm_tunnel xfrmi_ipip6_handler __read_mostly = { + .handler = xfrmi4_rcv_tunnel, + .cb_handler = xfrmi_rcv_cb, + .err_handler = xfrmi4_err, + .priority = 2, +}; +#endif + static int __init xfrmi4_init(void) { int err; @@ -813,9 +1045,23 @@ static int __init xfrmi4_init(void) err = xfrm4_protocol_register(&xfrmi_ipcomp4_protocol, IPPROTO_COMP); if (err < 0) goto xfrm_proto_comp_failed; +#if IS_REACHABLE(CONFIG_INET_XFRM_TUNNEL) + err = xfrm4_tunnel_register(&xfrmi_ipip_handler, AF_INET); + if (err < 0) + goto xfrm_tunnel_ipip_failed; + err = xfrm4_tunnel_register(&xfrmi_ipip6_handler, AF_INET6); + if (err < 0) + goto xfrm_tunnel_ipip6_failed; +#endif return 0; +#if IS_REACHABLE(CONFIG_INET_XFRM_TUNNEL) +xfrm_tunnel_ipip6_failed: + xfrm4_tunnel_deregister(&xfrmi_ipip_handler, AF_INET); +xfrm_tunnel_ipip_failed: + xfrm4_protocol_deregister(&xfrmi_ipcomp4_protocol, IPPROTO_COMP); +#endif xfrm_proto_comp_failed: xfrm4_protocol_deregister(&xfrmi_ah4_protocol, IPPROTO_AH); xfrm_proto_ah_failed: @@ -826,6 +1072,10 @@ xfrm_proto_esp_failed: static void xfrmi4_fini(void) { +#if IS_REACHABLE(CONFIG_INET_XFRM_TUNNEL) + xfrm4_tunnel_deregister(&xfrmi_ipip6_handler, AF_INET6); + xfrm4_tunnel_deregister(&xfrmi_ipip_handler, AF_INET); +#endif xfrm4_protocol_deregister(&xfrmi_ipcomp4_protocol, IPPROTO_COMP); xfrm4_protocol_deregister(&xfrmi_ah4_protocol, IPPROTO_AH); xfrm4_protocol_deregister(&xfrmi_esp4_protocol, IPPROTO_ESP); @@ -844,9 +1094,23 @@ static int __init xfrmi6_init(void) err = xfrm6_protocol_register(&xfrmi_ipcomp6_protocol, IPPROTO_COMP); if (err < 0) goto xfrm_proto_comp_failed; +#if IS_REACHABLE(CONFIG_INET6_XFRM_TUNNEL) + err = xfrm6_tunnel_register(&xfrmi_ipv6_handler, AF_INET6); + if (err < 0) + goto xfrm_tunnel_ipv6_failed; + err = xfrm6_tunnel_register(&xfrmi_ip6ip_handler, AF_INET); + if (err < 0) + goto xfrm_tunnel_ip6ip_failed; +#endif return 0; +#if IS_REACHABLE(CONFIG_INET6_XFRM_TUNNEL) +xfrm_tunnel_ip6ip_failed: + xfrm6_tunnel_deregister(&xfrmi_ipv6_handler, AF_INET6); +xfrm_tunnel_ipv6_failed: + xfrm6_protocol_deregister(&xfrmi_ipcomp6_protocol, IPPROTO_COMP); +#endif xfrm_proto_comp_failed: xfrm6_protocol_deregister(&xfrmi_ah6_protocol, IPPROTO_AH); xfrm_proto_ah_failed: @@ -857,6 +1121,10 @@ xfrm_proto_esp_failed: static void xfrmi6_fini(void) { +#if IS_REACHABLE(CONFIG_INET6_XFRM_TUNNEL) + xfrm6_tunnel_deregister(&xfrmi_ip6ip_handler, AF_INET); + xfrm6_tunnel_deregister(&xfrmi_ipv6_handler, AF_INET6); +#endif xfrm6_protocol_deregister(&xfrmi_ipcomp6_protocol, IPPROTO_COMP); xfrm6_protocol_deregister(&xfrmi_ah6_protocol, IPPROTO_AH); xfrm6_protocol_deregister(&xfrmi_esp6_protocol, IPPROTO_ESP); @@ -894,6 +1162,8 @@ static int __init xfrmi_init(void) if (err < 0) goto rtnl_link_failed; + lwtunnel_encap_add_ops(&xfrmi_encap_ops, LWTUNNEL_ENCAP_XFRM); + xfrm_if_register_cb(&xfrm_if_cb); return err; @@ -912,6 +1182,7 @@ pernet_dev_failed: static void __exit xfrmi_fini(void) { xfrm_if_unregister_cb(); + lwtunnel_encap_del_ops(&xfrmi_encap_ops, LWTUNNEL_ENCAP_XFRM); rtnl_link_unregister(&xfrmi_link_ops); xfrmi4_fini(); xfrmi6_fini(); |