+++ /dev/null
-/*
- * 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.
- */
-/*
- * vnet/buffer.h: vnet buffer flags
- *
- * Copyright (c) 2008 Eliot Dresselhaus
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
- * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
- * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#ifndef included_vnet_buffer_h
-#define included_vnet_buffer_h
-
-#include <vlib/vlib.h>
-
-/* VLIB buffer flags for ip4/ip6 packets. Set by input interfaces for ip4/ip6
- tcp/udp packets with hardware computed checksums. */
-#define LOG2_IP_BUFFER_L4_CHECKSUM_COMPUTED LOG2_VLIB_BUFFER_FLAG_USER(1)
-#define LOG2_IP_BUFFER_L4_CHECKSUM_CORRECT LOG2_VLIB_BUFFER_FLAG_USER(2)
-#define IP_BUFFER_L4_CHECKSUM_COMPUTED (1 << LOG2_IP_BUFFER_L4_CHECKSUM_COMPUTED)
-#define IP_BUFFER_L4_CHECKSUM_CORRECT (1 << LOG2_IP_BUFFER_L4_CHECKSUM_CORRECT)
-
-/* VLAN header flags.
- * These bits are zeroed in vlib_buffer_init_for_free_list()
- * meaning wherever the buffer comes from they have a reasonable
- * value (eg, if ip4/ip6 generates the packet.)
- */
-#define LOG2_ETH_BUFFER_VLAN_2_DEEP LOG2_VLIB_BUFFER_FLAG_USER(3)
-#define LOG2_ETH_BUFFER_VLAN_1_DEEP LOG2_VLIB_BUFFER_FLAG_USER(4)
-#define ETH_BUFFER_VLAN_2_DEEP (1 << LOG2_ETH_BUFFER_VLAN_2_DEEP)
-#define ETH_BUFFER_VLAN_1_DEEP (1 << LOG2_ETH_BUFFER_VLAN_1_DEEP)
-#define ETH_BUFFER_VLAN_BITS (ETH_BUFFER_VLAN_1_DEEP | \
- ETH_BUFFER_VLAN_2_DEEP)
-
-#define LOG2_VNET_BUFFER_RTE_MBUF_VALID LOG2_VLIB_BUFFER_FLAG_USER(5)
-#define VNET_BUFFER_RTE_MBUF_VALID (1 << LOG2_VNET_BUFFER_RTE_MBUF_VALID)
-
-#define LOG2_BUFFER_HANDOFF_NEXT_VALID LOG2_VLIB_BUFFER_FLAG_USER(6)
-#define BUFFER_HANDOFF_NEXT_VALID (1 << LOG2_BUFFER_HANDOFF_NEXT_VALID)
-
-#define LOG2_VNET_BUFFER_LOCALLY_ORIGINATED LOG2_VLIB_BUFFER_FLAG_USER(7)
-#define VNET_BUFFER_LOCALLY_ORIGINATED (1 << LOG2_VNET_BUFFER_LOCALLY_ORIGINATED)
-
-#define LOG2_VNET_BUFFER_SPAN_CLONE LOG2_VLIB_BUFFER_FLAG_USER(8)
-#define VNET_BUFFER_SPAN_CLONE (1 << LOG2_VNET_BUFFER_SPAN_CLONE)
-
-#define foreach_buffer_opaque_union_subtype \
-_(ethernet) \
-_(ip) \
-_(mcast) \
-_(swt) \
-_(l2) \
-_(l2t) \
-_(gre) \
-_(l2_classify) \
-_(handoff) \
-_(policer) \
-_(ipsec) \
-_(map) \
-_(map_t) \
-_(ip_frag)
-
-/*
- * vnet stack buffer opaque array overlay structure.
- * The vnet_buffer_opaque_t *must* be the same size as the
- * vlib_buffer_t "opaque" structure member, 32 bytes.
- *
- * When adding a union type, please add a stanza to
- * foreach_buffer_opaque_union_subtype (directly above).
- * Code in vnet_interface_init(...) verifies the size
- * of the union, and will announce any deviations in an
- * impossible-to-miss manner.
- */
-typedef struct
-{
- u32 sw_if_index[VLIB_N_RX_TX];
-
- union
- {
- /* Ethernet. */
- struct
- {
- /* Saved value of current header by ethernet-input. */
- i32 start_of_ethernet_header;
- } ethernet;
-
- /* IP4/6 buffer opaque. */
- struct
- {
- /* Adjacency from destination IP address lookup [VLIB_TX].
- Adjacency from source IP address lookup [VLIB_RX].
- This gets set to ~0 until source lookup is performed. */
- u32 adj_index[VLIB_N_RX_TX];
-
- union
- {
- struct
- {
- /* Flow hash value for this packet computed from IP src/dst address
- protocol and ports. */
- u32 flow_hash;
-
- /* next protocol */
- u32 save_protocol;
-
- /* Rewrite length */
- u32 save_rewrite_length;
- };
-
- /* ICMP */
- struct
- {
- u8 type;
- u8 code;
- u32 data;
- } icmp;
-
- /* IP header offset from vlib_buffer.data - saved by ip*_local nodes */
- i32 start_of_ip_header;
- };
-
- } ip;
-
- /*
- * MPLS:
- * data copied from the MPLS header that was popped from the packet
- * during the look-up.
- */
- struct
- {
- u8 ttl;
- u8 exp;
- u8 first;
- } mpls;
-
- /* Multicast replication */
- struct
- {
- u32 pad[3];
- u32 mcast_group_index;
- u32 mcast_current_index;
- u32 original_free_list_index;
- } mcast;
-
- /* ip4-in-ip6 softwire termination, only valid there */
- struct
- {
- u8 swt_disable;
- u32 mapping_index;
- } swt;
-
- /* l2 bridging path, only valid there */
- struct
- {
- u32 feature_bitmap;
- u16 bd_index; // bridge-domain index
- u8 l2_len; // ethernet header length
- u8 shg; // split-horizon group
- } l2;
-
- /* l2tpv3 softwire encap, only valid there */
- struct
- {
- u32 pad[4]; /* do not overlay w/ ip.adj_index[0,1] */
- u8 next_index;
- u32 session_index;
- } l2t;
-
- struct
- {
- u32 src, dst;
- } gre;
-
- /* L2 classify */
- struct
- {
- u64 pad;
- u32 table_index;
- u32 opaque_index;
- u64 hash;
- } l2_classify;
-
- /* IO - worker thread handoff */
- struct
- {
- u32 next_index;
- } handoff;
-
- /* vnet policer */
- struct
- {
- u32 pad[8 - VLIB_N_RX_TX - 1]; /* to end of opaque */
- u32 index;
- } policer;
-
- /* interface output features */
- struct
- {
- u32 flags;
- u32 sad_index;
- } ipsec;
-
- /* vcgn udp inside input, only valid there */
- struct
- {
- /* This part forms context of the packet. The structure should be
- * exactly same as spp_ctx_t. Also this should be the first
- * element of this vcgn_uii structure.
- */
- /****** BEGIN spp_ctx_t section ***********************/
- union
- { /* Roddick specific */
- u32 roddick_info;
- struct _tx_pkt_info
- { /* Used by PI to PI communication for TX */
- u32 uidb_index:16; /* uidb_index to transmit */
- u32 packet_type:2; /* 1-IPv4, 2-Ipv6, - 0,3 - Unused */
- u32 ipv4_defrag:1; /* 0 - Normal, 1 - update first
- * segment size
- * (set by 6rd defrag node)
- */
-
- u32 dst_ip_port_idx:4; /* Index to dst_ip_port_table */
- u32 from_node:4;
- u32 calc_chksum:1;
- u32 reserved:4;
- } tx;
- struct _rx_pkt_info
- { /* Used by PD / PI communication */
- u32 uidb_index:16; /* uidb_index received in packet */
- u32 packet_type:2; /* 1-IPv4, 2-Ipv6, - 0,3 - Unused */
- u32 icmp_type:1; /* 0-ICMP query type, 1-ICMP error type */
- u32 protocol_type:2; /* 1-TCP, 2-UDP, 3-ICMP, 0 - Unused */
- u32 ipv4_defrag:1; /* 0 - Normal, 1 - update first
- * segment size
- * (set by 6rd defrag node)
- */
-
- u32 direction:1; /* 0-Outside, 1-Inside */
- u32 frag:1; /*IP fragment-1, Otherwise-0 */
- u32 option:1; /* 0-No IP option (v4) present, non-fragHdr
- * option hdr present (v6)
- */
- u32 df_bit:1; /* IPv4 DF bit copied here */
- u32 reserved1:6;
- } rx;
- } ru;
- /****** END spp_ctx_t section ***********************/
-
- union
- {
- struct
- {
- u32 ipv4;
- u16 port;
- u16 vrf; //bit0-13:i/f, bit14-15:protocol
- } k;
-
- u64 key64;
- } key;
-
- u32 bucket;
-
- u16 ovrf; /* Exit interface */
- u8 frag_pkt;
- u8 vcgn_unused1;
- } vcgn_uii;
-
- /* MAP */
- struct
- {
- u16 mtu;
- } map;
-
- /* MAP-T */
- struct
- {
- u32 map_domain_index;
- struct
- {
- u32 saddr, daddr;
- u16 frag_offset; //Fragmentation header offset
- u16 l4_offset; //L4 header overall offset
- u8 l4_protocol; //The final protocol number
- } v6; //Used by ip6_map_t only
- u16 checksum_offset; //L4 checksum overall offset
- u16 mtu; //Exit MTU
- } map_t;
-
- /* IP Fragmentation */
- struct
- {
- u16 header_offset;
- u16 mtu;
- u8 next_index;
- u8 flags; //See ip_frag.h
- } ip_frag;
-
- /* COP - configurable junk filter(s) */
- struct
- {
- /* Current configuration index. */
- u32 current_config_index;
- } cop;
-
- /* LISP */
- struct
- {
- /* overlay address family */
- u16 overlay_afi;
- } lisp;
-
- /* Driver rx feature */
- struct
- {
- u32 saved_next_index; /**< saved by drivers for short-cut */
- u16 buffer_advance;
- } device_input_feat;
-
- u32 unused[6];
- };
-} vnet_buffer_opaque_t;
-
-/*
- * The opaque field of the vlib_buffer_t is intepreted as a
- * vnet_buffer_opaque_t. Hence it should be big enough to accommodate one.
- */
-STATIC_ASSERT (sizeof (vnet_buffer_opaque_t) <= STRUCT_SIZE_OF (vlib_buffer_t,
- opaque),
- "VNET buffer meta-data too large for vlib_buffer");
-
-#define vnet_buffer(b) ((vnet_buffer_opaque_t *) (b)->opaque)
-
-/* Full cache line (64 bytes) of additional space */
-typedef struct
-{
- union
- {
- };
-} vnet_buffer_opaque2_t;
-
-
-
-#endif /* included_vnet_buffer_h */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff