Improve MTU handling - vpp - Vector Packet Processing

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author	Neale Ranns <neale.ranns@cisco.com>	2018-02-09 06:05:16 -0800
committer	Damjan Marion <dmarion.lists@gmail.com>	2018-02-12 11:23:33 +0000
commit	ffd78d1ef8fe80d1b756a71d42d5eadda60ae996 (patch)
tree	99770e8773a7c3dd27c8b9b116edb6a39ace09ea /src/vnet/bfd/bfd_udp.h
parent	2d6f66e1748be190664cbd72c826db32616d759a (diff)

Improve MTU handling

- setting MTU on an interface updates the L3 max bytes too - value cached in the adjacency is also updated - MTU exceeded generates ICMP to sender Change-Id: I343ec71d8e903b529594c4bd0543f04bc7f370b3 Signed-off-by: Neale Ranns <neale.ranns@cisco.com>

Diffstat (limited to 'src/vnet/bfd/bfd_udp.h')

0 files changed, 0 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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