summaryrefslogtreecommitdiffstats
path: root/src/vnet/l2/l2_learn.c
diff options
context:
space:
mode:
authorGordonNoonan <gordon.noonan@intel.com>2019-12-04 15:16:40 +0000
committerDamjan Marion <dmarion@me.com>2019-12-17 18:14:55 +0000
commitb2dbb36fc265b8996fc7fa310dda447d5b0479cb (patch)
treef7940dc972d77df3963a0a6fd2731362b06f68b2 /src/vnet/l2/l2_learn.c
parent6dfd3785e4d65418f4330a73bf837912c37b8ec2 (diff)
vlib: fix startup-config-process stack overflow
Type: fix Startup config setting an i40e/ice interface up in Debug VPP consumes more than the currently available stack space. Signed-off-by: GordonNoonan <gordon.noonan@intel.com> Change-Id: I98b52c5596799017b97f802a8661b76cd1bb3245
Diffstat (limited to 'src/vnet/l2/l2_learn.c')
0 files changed, 0 insertions, 0 deletions
ref='#n143'>143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 
/*
 * tunnel_dp.h: data-plane functions tunnels.
 *
 * Copyright (c) 2019 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.
 */

#ifndef __TUNNEL_DP_H__
#define __TUNNEL_DP_H__

#include <vnet/tunnel/tunnel.h>
#include <vnet/mpls/mpls_lookup.h>

static_always_inline void
tunnel_encap_fixup_4o4 (tunnel_encap_decap_flags_t flags,
			const ip4_header_t * inner, ip4_header_t * outer)
{
  if (PREDICT_FALSE (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP))
    ip4_header_set_dscp (outer, ip4_header_get_dscp (inner));
  if (PREDICT_FALSE (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN))
    ip4_header_set_ecn (outer, ip4_header_get_ecn (inner));
  if (PREDICT_FALSE ((flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DF) &&
		     ip4_header_get_df (inner)))
    ip4_header_set_df (outer);
  if (PREDICT_FALSE (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_HOP_LIMIT))
    ip4_header_set_ttl (outer, ip4_header_get_ttl (inner));
}

static_always_inline void
tunnel_encap_fixup_4o4_w_chksum (tunnel_encap_decap_flags_t flags,
				 const ip4_header_t * inner,
				 ip4_header_t * outer)
{
  if (PREDICT_FALSE (flags & (TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP |
			      TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN)))
    {
      ip_csum_t sum = outer->checksum;
      u8 tos = outer->tos;

      if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP)
	ip4_header_set_dscp (outer, ip4_header_get_dscp (inner));
      if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN)
	ip4_header_set_ecn (outer, ip4_header_get_ecn (inner));

      sum =
	ip_csum_update (outer->checksum, tos, outer->tos, ip4_header_t, tos);
      outer->checksum = ip_csum_fold (sum);
    }
  if (PREDICT_FALSE ((flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DF) &&
		     ip4_header_get_df (inner)))
    {
      ip_csum_t sum = outer->checksum;
      u16 tos = outer->flags_and_fragment_offset;

      ip4_header_set_df (outer);

      sum =
	ip_csum_update (outer->checksum, tos, outer->tos, ip4_header_t,
			flags_and_fragment_offset);
      outer->checksum = ip_csum_fold (sum);
    }
}

static_always_inline void
tunnel_encap_fixup_mplso4_w_chksum (tunnel_encap_decap_flags_t flags,
				    const mpls_unicast_header_t *inner,
				    ip4_header_t *outer)
{
  if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP)
    {
      ip_csum_t sum = outer->checksum;
      u8 tos = outer->tos;

      if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP)
	ip4_header_set_dscp (outer,
			     vnet_mpls_uc_get_exp (inner->label_exp_s_ttl));

      sum =
	ip_csum_update (outer->checksum, tos, outer->tos, ip4_header_t, tos);
      outer->checksum = ip_csum_fold (sum);
    }
}

static_always_inline void
tunnel_encap_fixup_6o4 (tunnel_encap_decap_flags_t flags,
			const ip6_header_t * inner, ip4_header_t * outer)
{
  if (PREDICT_FALSE (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP))
    ip4_header_set_dscp (outer, ip6_dscp_network_order (inner));
  if (PREDICT_FALSE (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN))
    ip4_header_set_ecn (outer, ip6_ecn_network_order ((inner)));
  if (PREDICT_FALSE (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_HOP_LIMIT))
    ip4_header_set_ttl (outer, ip6_hop_limit_network_order (inner));
}

static_always_inline void
tunnel_encap_fixup_6o4_w_chksum (tunnel_encap_decap_flags_t flags,
				 const ip6_header_t * inner,
				 ip4_header_t * outer)
{
  if (PREDICT_FALSE (flags & (TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP |
			      TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN)))
    {
      ip_csum_t sum = outer->checksum;
      u8 tos = outer->tos;

      if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP)
	ip4_header_set_dscp (outer, ip6_dscp_network_order (inner));
      if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN)
	ip4_header_set_ecn (outer, ip6_ecn_network_order ((inner)));

      sum =
	ip_csum_update (outer->checksum, tos, outer->tos, ip4_header_t, tos);
      outer->checksum = ip_csum_fold (sum);
    }
}

static_always_inline void
tunnel_encap_fixup_6o6 (tunnel_encap_decap_flags_t flags,
			const ip6_header_t * inner, ip6_header_t * outer)
{
  if (PREDICT_FALSE (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP))
    ip6_set_dscp_network_order (outer, ip6_dscp_network_order (inner));
  if (PREDICT_FALSE (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN))
    ip6_set_ecn_network_order (outer, ip6_ecn_network_order (inner));
  if (PREDICT_FALSE (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_FLOW_LABEL))
    ip6_set_flow_label_network_order (outer,
				      ip6_flow_label_network_order (inner));
  if (PREDICT_FALSE (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_HOP_LIMIT))
    ip6_set_hop_limit_network_order (outer,
				     ip6_hop_limit_network_order (inner));
}

static_always_inline void
tunnel_encap_fixup_4o6 (tunnel_encap_decap_flags_t flags,
			const vlib_buffer_t *b, const ip4_header_t *inner,
			ip6_header_t *outer)
{
  if (PREDICT_FALSE (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP))
    ip6_set_dscp_network_order (outer, ip4_header_get_dscp (inner));
  if (PREDICT_FALSE (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN))
    ip6_set_ecn_network_order (outer, ip4_header_get_ecn (inner));
  if (PREDICT_FALSE (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_HOP_LIMIT))
    ip6_set_hop_limit_network_order (outer, ip4_header_get_ttl (inner));
  if (PREDICT_FALSE (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_FLOW_LABEL))
    ip6_set_flow_label_network_order (
      outer, (0 != vnet_buffer (b)->ip.flow_hash ?
		vnet_buffer (b)->ip.flow_hash :
		ip4_compute_flow_hash (inner, IP_FLOW_HASH_DEFAULT)));
}

static_always_inline void
tunnel_encap_fixup_mplso6 (tunnel_encap_decap_flags_t flags,
			   const vlib_buffer_t *b,
			   const mpls_unicast_header_t *inner,
			   ip6_header_t *outer)
{
  if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP)
    ip6_set_dscp_network_order (outer,
				vnet_mpls_uc_get_exp (inner->label_exp_s_ttl));
  if (PREDICT_FALSE (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_FLOW_LABEL))
    ip6_set_flow_label_network_order (
      outer, (0 != vnet_buffer (b)->ip.flow_hash ?
		vnet_buffer (b)->ip.flow_hash :
		mpls_compute_flow_hash (inner, IP_FLOW_HASH_DEFAULT)));
}

static_always_inline void
tunnel_encap_fixup_mplso4 (tunnel_encap_decap_flags_t flags,
			   const mpls_unicast_header_t *inner,
			   ip4_header_t *outer)
{
  if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP)
    ip4_header_set_dscp (outer, vnet_mpls_uc_get_exp (inner->label_exp_s_ttl));
}

static_always_inline void
tunnel_decap_fixup_4o6 (tunnel_encap_decap_flags_t flags,
			ip4_header_t * inner, const ip6_header_t * outer)
{
  if (PREDICT_FALSE (flags & TUNNEL_ENCAP_DECAP_FLAG_DECAP_COPY_ECN))
    ip4_header_set_ecn_w_chksum (inner, ip6_ecn_network_order (outer));
}

static_always_inline void
tunnel_decap_fixup_6o6 (tunnel_encap_decap_flags_t flags,
			ip6_header_t * inner, const ip6_header_t * outer)
{
  if (PREDICT_FALSE (flags & TUNNEL_ENCAP_DECAP_FLAG_DECAP_COPY_ECN))
    ip6_set_ecn_network_order (inner, ip6_ecn_network_order (outer));
}

static_always_inline void
tunnel_decap_fixup_6o4 (tunnel_encap_decap_flags_t flags,
			ip6_header_t * inner, const ip4_header_t * outer)
{
  if (PREDICT_FALSE (flags & TUNNEL_ENCAP_DECAP_FLAG_DECAP_COPY_ECN))
    ip6_set_ecn_network_order (inner, ip4_header_get_ecn (outer));
}

static_always_inline void
tunnel_decap_fixup_4o4 (tunnel_encap_decap_flags_t flags,
			ip4_header_t * inner, const ip4_header_t * outer)
{
  if (PREDICT_FALSE (flags & TUNNEL_ENCAP_DECAP_FLAG_DECAP_COPY_ECN))
    ip4_header_set_ecn_w_chksum (inner, ip4_header_get_ecn (outer));
}

static_always_inline void
tunnel_decap_fixup_mplso6 (tunnel_encap_decap_flags_t flags,
			   mpls_unicast_header_t *inner,
			   const ip6_header_t *outer)
{
}

static_always_inline void
tunnel_decap_fixup_mplso4 (tunnel_encap_decap_flags_t flags,
			   mpls_unicast_header_t *inner,
			   const ip4_header_t *outer)
{
}

#endif

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */