wireguard: add async mode for decryption packets - vpp

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author	Gabriel Oginski <gabrielx.oginski@intel.com>	2021-11-17 10:27:00 +0000
committer	Matthew Smith <mgsmith@netgate.com>	2022-01-21 15:44:39 +0000
commit	77e69ae2d172dce74f4da4cae52bb63e28daa3ae (patch)
tree	ec6b93bd4ea54d81926a84b498dc7016cb8608ad /src/plugins/wireguard/wireguard.c
parent	492d7790ff26c569bee81617c662363652891140 (diff)

wireguard: add async mode for decryption packets

Originally wireguard doesn't support async mode for decryption packets. This patch add async mode for decryption in wireguard. In addition, it contains some performance improvement such as prefetching packet header and reducing the number of current time function calls. Type: improvement Signed-off-by: Gabriel Oginski <gabrielx.oginski@intel.com> Change-Id: Ieba6ae0078f3ff140c05b517891afb57232b3b7d

Diffstat (limited to 'src/plugins/wireguard/wireguard.c')

-rw-r--r--

src/plugins/wireguard/wireguard.c

1 files changed, 9 insertions, 0 deletions

/* * Copyright (c) 2015 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include <vnet/ipsec/ipsec.h> /** * @brief * Policy packet & bytes counters */ vlib_combined_counter_main_t ipsec_spd_policy_counters = { .name = "policy", .stat_segment_name = "/net/ipsec/policy", }; static int ipsec_policy_is_equal (ipsec_policy_t * p1, ipsec_policy_t * p2) { if (p1->priority != p2->priority) return 0; if (p1->type != p2->type) return (0); if (p1->policy != p2->policy) return (0); if (p1->sa_id != p2->sa_id) return (0); if (p1->protocol != p2->protocol) return (0); if (p1->lport.start != p2->lport.start) return (0); if (p1->lport.stop != p2->lport.stop) return (0); if (p1->rport.start != p2->rport.start) return (0); if (p1->rport.stop != p2->rport.stop) return (0); if (p1->is_ipv6 != p2->is_ipv6) return (0); if (p2->is_ipv6) { if (p1->laddr.start.ip6.as_u64[0] != p2->laddr.start.ip6.as_u64[0]) return (0); if (p1->laddr.start.ip6.as_u64[1] != p2->laddr.start.ip6.as_u64[1]) return (0); if (p1->laddr.stop.ip6.as_u64[0] != p2->laddr.stop.ip6.as_u64[0]) return (0); if (p1->laddr.stop.ip6.as_u64[1] != p2->laddr.stop.ip6.as_u64[1]) return (0); if (p1->raddr.start.ip6.as_u64[0] != p2->raddr.start.ip6.as_u64[0]) return (0); if (p1->raddr.start.ip6.as_u64[1] != p2->raddr.start.ip6.as_u64[1]) return (0); if (p1->raddr.stop.ip6.as_u64[0] != p2->raddr.stop.ip6.as_u64[0]) return (0); if (p1->laddr.stop.ip6.as_u64[1] != p2->laddr.stop.ip6.as_u64[1]) return (0); } else { if (p1->laddr.start.ip4.as_u32 != p2->laddr.start.ip4.as_u32) return (0); if (p1->laddr.stop.ip4.as_u32 != p2->laddr.stop.ip4.as_u32) return (0); if (p1->raddr.start.ip4.as_u32 != p2->raddr.start.ip4.as_u32) return (0); if (p1->raddr.stop.ip4.as_u32 != p2->raddr.stop.ip4.as_u32) return (0); } return (1); } static int ipsec_spd_entry_sort (void *a1, void *a2) { ipsec_main_t *im = &ipsec_main; u32 *id1 = a1; u32 *id2 = a2; ipsec_policy_t *p1, *p2; p1 = pool_elt_at_index (im->policies, *id1); p2 = pool_elt_at_index (im->policies, *id2); if (p1 && p2) return p2->priority - p1->priority; return 0; } int ipsec_policy_mk_type (bool is_outbound, bool is_ipv6, ipsec_policy_action_t action, ipsec_spd_policy_type_t * type) { if (is_outbound) { *type = (is_ipv6 ? IPSEC_SPD_POLICY_IP6_OUTBOUND : IPSEC_SPD_POLICY_IP4_OUTBOUND); return (0); } else { switch (action) { case IPSEC_POLICY_ACTION_PROTECT: *type = (is_ipv6 ? IPSEC_SPD_POLICY_IP6_INBOUND_PROTECT : IPSEC_SPD_POLICY_IP4_INBOUND_PROTECT); return (0); case IPSEC_POLICY_ACTION_BYPASS: *type = (is_ipv6 ? IPSEC_SPD_POLICY_IP6_INBOUND_BYPASS : IPSEC_SPD_POLICY_IP4_INBOUND_BYPASS); return (0); case IPSEC_POLICY_ACTION_DISCARD: case IPSEC_POLICY_ACTION_RESOLVE: break; } } /* Unsupported type */ return (-1); } int ipsec_add_del_policy (vlib_main_t * vm, ipsec_policy_t * policy, int is_add, u32 * stat_index) { ipsec_main_t *im = &ipsec_main; ipsec_spd_t *spd = 0; ipsec_policy_t *vp; u32 spd_index; uword *p; clib_warning ("policy-id %u priority %d type %U", policy->id, policy->priority, format_ipsec_policy_type, policy->type); if (policy->policy == IPSEC_POLICY_ACTION_PROTECT) { p = hash_get (im->sa_index_by_sa_id, policy->sa_id); if (!p) return VNET_API_ERROR_SYSCALL_ERROR_1; policy->sa_index = p[0]; } p = hash_get (im->spd_index_by_spd_id, policy->id); if (!p) return VNET_API_ERROR_SYSCALL_ERROR_1; spd_index = p[0]; spd = pool_elt_at_index (im->spds, spd_index); if (!spd) return VNET_API_ERROR_SYSCALL_ERROR_1; if (is_add) { u32 policy_index; pool_get (im->policies, vp); clib_memcpy (vp, policy, sizeof (*vp)); policy_index = vp - im->policies; vlib_validate_combined_counter (&ipsec_spd_policy_counters, policy_index); vlib_zero_combined_counter (&ipsec_spd_policy_counters, policy_index); vec_add1 (spd->policies[policy->type], policy_index); vec_sort_with_function (spd->policies[policy->type], ipsec_spd_entry_sort); *stat_index = policy_index; } else { u32 ii; vec_foreach_index (ii, (spd->policies[policy->type])) { vp = pool_elt_at_index (im->policies, spd->policies[policy->type][ii]); if (ipsec_policy_is_equal (vp, policy)) { vec_del1 (spd->policies[policy->type], ii); pool_put (im->policies, vp); break; } } } return 0; } /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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