stn: use explicit types in api - vpp - Vector Packet Processing

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author	Ole Troan <ot@cisco.com>	2019-12-06 14:42:17 +0100
committer	Andrew Yourtchenko <ayourtch@gmail.com>	2019-12-07 11:23:02 +0000
commit	7929f9f5c612b22097d874001e93f5bb38e5ed4f (patch)
tree	182a208e8633f40ec4205544ef08db956400ba24 /src/vnet/span/span.c
parent	277f03f0673b4be5db0f0eb8b3ed0e63855dbac7 (diff)

stn: use explicit types in api

Type: fix Signed-off-by: Ole Troan <ot@cisco.com> Change-Id: Ifba4ff0e0f61641ca3f5e7bb72086cb4f32f1909

Diffstat (limited to 'src/vnet/span/span.c')

0 files changed, 0 insertions, 0 deletions

/* * ipsec_output.c : IPSec output node * * 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/vnet.h> #include <vnet/api_errno.h> #include <vnet/ip/ip.h> #include <vnet/ipsec/ipsec.h> #if WITH_LIBSSL > 0 #define foreach_ipsec_output_error \ _(RX_PKTS, "IPSec pkts received") \ _(POLICY_DISCARD, "IPSec policy discard") \ _(POLICY_NO_MATCH, "IPSec policy (no match)") \ _(POLICY_PROTECT, "IPSec policy protect") \ _(POLICY_BYPASS, "IPSec policy bypass") \ _(ENCAPS_FAILED, "IPSec encapsulation failed") typedef enum { #define _(sym,str) IPSEC_OUTPUT_ERROR_##sym, foreach_ipsec_output_error #undef _ IPSEC_DECAP_N_ERROR, } ipsec_output_error_t; static char *ipsec_output_error_strings[] = { #define _(sym,string) string, foreach_ipsec_output_error #undef _ }; static vlib_node_registration_t ipsec_output_ip4_node; static vlib_node_registration_t ipsec_output_ip6_node; typedef struct { u32 spd_id; } ipsec_output_trace_t; /* packet trace format function */ static u8 * format_ipsec_output_trace (u8 * s, va_list * args) { CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); ipsec_output_trace_t *t = va_arg (*args, ipsec_output_trace_t *); if (t->spd_id != ~0) { s = format (s, "spd %u ", t->spd_id); } else { s = format (s, "no spd"); } return s; } always_inline ipsec_policy_t * ipsec_output_policy_match (ipsec_spd_t * spd, u8 pr, u32 la, u32 ra, u16 lp, u16 rp) { ipsec_policy_t *p; u32 *i; if (!spd) return 0; vec_foreach (i, spd->ipv4_outbound_policies) { p = pool_elt_at_index (spd->policies, *i); if (PREDICT_FALSE (p->protocol && (p->protocol != pr))) continue; if (la < clib_net_to_host_u32 (p->laddr.start.ip4.as_u32)) continue; if (la > clib_net_to_host_u32 (p->laddr.stop.ip4.as_u32)) continue; if (ra < clib_net_to_host_u32 (p->raddr.start.ip4.as_u32)) continue; if (ra > clib_net_to_host_u32 (p->raddr.stop.ip4.as_u32)) continue; if (PREDICT_FALSE ((pr != IP_PROTOCOL_TCP) && (pr != IP_PROTOCOL_UDP) && (pr != IP_PROTOCOL_SCTP))) return p; if (lp < p->lport.start) continue; if (lp > p->lport.stop) continue; if (rp < p->rport.start) continue; if (rp > p->rport.stop) continue; return p; } return 0; } always_inline uword ip6_addr_match_range (ip6_address_t * a, ip6_address_t * la, ip6_address_t * ua) { if ((memcmp (a->as_u64, la->as_u64, 2 * sizeof (u64)) >= 0) && (memcmp (a->as_u64, ua->as_u64, 2 * sizeof (u64)) <= 0)) return 1; return 0; } always_inline ipsec_policy_t * ipsec_output_ip6_policy_match (ipsec_spd_t * spd, ip6_address_t * la, ip6_address_t * ra, u16 lp, u16 rp, u8 pr) { ipsec_policy_t *p; u32 *i; if (!spd) return 0; vec_foreach (i, spd->ipv6_outbound_policies) { p = pool_elt_at_index (spd->policies, *i); if (PREDICT_FALSE (p->protocol && (p->protocol != pr))) continue; if (!ip6_addr_match_range (ra, &p->raddr.start.ip6, &p->raddr.stop.ip6)) continue; if (!ip6_addr_match_range (la, &p->laddr.start.ip6, &p->laddr.stop.ip6)) continue; if (PREDICT_FALSE ((pr != IP_PROTOCOL_TCP) && (pr != IP_PROTOCOL_UDP) && (pr != IP_PROTOCOL_SCTP))) return p; if (lp < p->lport.start) continue; if (lp > p->lport.stop) continue; if (rp < p->rport.start) continue; if (rp > p->rport.stop) continue; return p; } return 0; } static inline uword ipsec_output_inline (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame, int is_ipv6) { ipsec_main_t *im = &ipsec_main; u32 *from, *to_next = 0; u32 n_left_from, sw_if_index0, last_sw_if_index = (u32) ~ 0; u32 next_node_index = (u32) ~ 0, last_next_node_index = (u32) ~ 0; vlib_frame_t *f = 0; u32 spd_index0 = ~0; ipsec_spd_t *spd0 = 0; u64 nc_protect = 0, nc_bypass = 0, nc_discard = 0, nc_nomatch = 0; from = vlib_frame_vector_args (from_frame); n_left_from = from_frame->n_vectors; while (n_left_from > 0) { u32 bi0; vlib_buffer_t *b0; ipsec_policy_t *p0; ip4_header_t *ip0; ip6_header_t *ip6_0 = 0; udp_header_t *udp0; u32 iph_offset = 0; bi0 = from[0]; b0 = vlib_get_buffer (vm, bi0); sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX]; iph_offset = vnet_buffer (b0)->ip.save_rewrite_length; ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) + iph_offset); /* lookup for SPD only if sw_if_index is changed */ if (PREDICT_FALSE (last_sw_if_index != sw_if_index0)) { uword *p = hash_get (im->spd_index_by_sw_if_index, sw_if_index0); ASSERT (p); spd_index0 = p[0]; spd0 = pool_elt_at_index (im->spds, spd_index0); last_sw_if_index = sw_if_index0; } if (is_ipv6) { ip6_0 = (ip6_header_t *) ((u8 *) vlib_buffer_get_current (b0) + iph_offset); udp0 = ip6_next_header (ip6_0); #if 0 clib_warning ("packet received from %U port %u to %U port %u spd_id %u", format_ip6_address, &ip6_0->src_address, clib_net_to_host_u16 (udp0->src_port), format_ip6_address, &ip6_0->dst_address, clib_net_to_host_u16 (udp0->dst_port), spd0->id); #endif p0 = ipsec_output_ip6_policy_match (spd0, &ip6_0->src_address, &ip6_0->dst_address, clib_net_to_host_u16 (udp0->src_port), clib_net_to_host_u16 (udp0->dst_port), ip6_0->protocol); } else { udp0 = (udp_header_t *) ((u8 *) ip0 + ip4_header_bytes (ip0)); #if 0 clib_warning ("packet received from %U to %U port %u", format_ip4_address, ip0->src_address.as_u8, format_ip4_address, ip0->dst_address.as_u8, clib_net_to_host_u16 (udp0->dst_port)); clib_warning ("sw_if_index0 %u spd_index0 %u spd_id %u", sw_if_index0, spd_index0, spd0->id); #endif p0 = ipsec_output_policy_match (spd0, ip0->protocol, clib_net_to_host_u32 (ip0->src_address.as_u32), clib_net_to_host_u32 (ip0->dst_address.as_u32), clib_net_to_host_u16 (udp0->src_port), clib_net_to_host_u16 (udp0->dst_port)); } if (PREDICT_TRUE (p0 != NULL)) { if (p0->policy == IPSEC_POLICY_ACTION_PROTECT) { u32 sa_index = 0; ipsec_sa_t *sa = 0; nc_protect++; sa_index = ipsec_get_sa_index_by_sa_id (p0->sa_id); sa = pool_elt_at_index (im->sad, sa_index); if (sa->protocol == IPSEC_PROTOCOL_ESP) next_node_index = im->esp_encrypt_node_index; else next_node_index = im->ah_encrypt_node_index; vnet_buffer (b0)->ipsec.sad_index = p0->sa_index; vlib_buffer_advance (b0, iph_offset); p0->counter.packets++; if (is_ipv6) { p0->counter.bytes += clib_net_to_host_u16 (ip6_0->payload_length); p0->counter.bytes += sizeof (ip6_header_t); } else { p0->counter.bytes += clib_net_to_host_u16 (ip0->length); } } else if (p0->policy == IPSEC_POLICY_ACTION_BYPASS) { nc_bypass++; next_node_index = get_next_output_feature_node_index (b0, node); p0->counter.packets++; if (is_ipv6) { p0->counter.bytes += clib_net_to_host_u16 (ip6_0->payload_length); p0->counter.bytes += sizeof (ip6_header_t); } else { p0->counter.bytes += clib_net_to_host_u16 (ip0->length); } } else { nc_discard++; p0->counter.packets++; if (is_ipv6) { p0->counter.bytes += clib_net_to_host_u16 (ip6_0->payload_length); p0->counter.bytes += sizeof (ip6_header_t); } else { p0->counter.bytes += clib_net_to_host_u16 (ip0->length); } next_node_index = im->error_drop_node_index; } } else { nc_nomatch++; next_node_index = im->error_drop_node_index; } from += 1; n_left_from -= 1; if (PREDICT_FALSE ((last_next_node_index != next_node_index) || f == 0)) { /* if this is not 1st frame */ if (f) vlib_put_frame_to_node (vm, last_next_node_index, f); last_next_node_index = next_node_index; f = vlib_get_frame_to_node (vm, next_node_index); to_next = vlib_frame_vector_args (f); } to_next[0] = bi0; to_next += 1; f->n_vectors++; if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) { ipsec_output_trace_t *tr = vlib_add_trace (vm, node, b0, sizeof (*tr)); if (spd0) tr->spd_id = spd0->id; } } vlib_put_frame_to_node (vm, next_node_index, f); vlib_node_increment_counter (vm, node->node_index, IPSEC_OUTPUT_ERROR_POLICY_PROTECT, nc_protect); vlib_node_increment_counter (vm, node->node_index, IPSEC_OUTPUT_ERROR_POLICY_BYPASS, nc_bypass); vlib_node_increment_counter (vm, node->node_index, IPSEC_OUTPUT_ERROR_POLICY_DISCARD, nc_discard); vlib_node_increment_counter (vm, node->node_index, IPSEC_OUTPUT_ERROR_POLICY_NO_MATCH, nc_nomatch); return from_frame->n_vectors; } static uword ipsec_output_ip4_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return ipsec_output_inline (vm, node, frame, 0); } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (ipsec_output_ip4_node,static) = { .function = ipsec_output_ip4_node_fn, .name = "ipsec-output-ip4", .vector_size = sizeof (u32), .format_trace = format_ipsec_output_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN(ipsec_output_error_strings), .error_strings = ipsec_output_error_strings, .n_next_nodes = IPSEC_OUTPUT_N_NEXT, .next_nodes = { #define _(s,n) [IPSEC_OUTPUT_NEXT_##s] = n, foreach_ipsec_output_next #undef _ }, }; /* *INDENT-ON* */ VLIB_NODE_FUNCTION_MULTIARCH (ipsec_output_ip4_node, ipsec_output_ip4_node_fn) static uword ipsec_output_ip6_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return ipsec_output_inline (vm, node, frame, 1); } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (ipsec_output_ip6_node,static) = { .function = ipsec_output_ip6_node_fn, .name = "ipsec-output-ip6", .vector_size = sizeof (u32), .format_trace = format_ipsec_output_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN(ipsec_output_error_strings), .error_strings = ipsec_output_error_strings, .n_next_nodes = IPSEC_OUTPUT_N_NEXT, .next_nodes = { #define _(s,n) [IPSEC_OUTPUT_NEXT_##s] = n, foreach_ipsec_output_next #undef _ }, }; /* *INDENT-ON* */ VLIB_NODE_FUNCTION_MULTIARCH (ipsec_output_ip6_node, ipsec_output_ip6_node_fn) #else /* IPSEC > 1 */ /* Dummy ipsec output node, in case when IPSec is disabled */ static uword ipsec_output_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { clib_warning ("IPSec disabled"); return 0; } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (ipsec_output_node) = { .vector_size = sizeof (u32), .function = ipsec_output_node_fn, .name = "ipsec-output-ip4", }; VLIB_REGISTER_NODE (ipsec_output_node) = { .vector_size = sizeof (u32), .function = ipsec_output_node_fn, .name = "ipsec-output-ip6", }; /* *INDENT-ON* */ #endif /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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