diff options
author | Damjan Marion <damarion@cisco.com> | 2016-12-19 23:05:39 +0100 |
---|---|---|
committer | Damjan Marion <damarion@cisco.com> | 2016-12-28 12:25:14 +0100 |
commit | 7cd468a3d7dee7d6c92f69a0bb7061ae208ec727 (patch) | |
tree | 5de62f8dbd3a752f5a676ca600e43d2652d1ff1a /vnet/vnet/ethernet/ethernet.h | |
parent | 696f1adec0df3b8f161862566dd9c86174302658 (diff) |
Reorganize source tree to use single autotools instance
Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23
Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'vnet/vnet/ethernet/ethernet.h')
-rw-r--r-- | vnet/vnet/ethernet/ethernet.h | 561 |
1 files changed, 0 insertions, 561 deletions
diff --git a/vnet/vnet/ethernet/ethernet.h b/vnet/vnet/ethernet/ethernet.h deleted file mode 100644 index f88b0cf3c87..00000000000 --- a/vnet/vnet/ethernet/ethernet.h +++ /dev/null @@ -1,561 +0,0 @@ -/* - * 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. - */ -/* - * ethernet.h: types/functions for ethernet. - * - * 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_ethernet_h -#define included_ethernet_h - -#include <vnet/vnet.h> -#include <vnet/ethernet/packet.h> -#include <vnet/pg/pg.h> -#include <vnet/feature/feature.h> - -always_inline u64 -ethernet_mac_address_u64 (u8 * a) -{ - return (((u64) a[0] << (u64) (5 * 8)) - | ((u64) a[1] << (u64) (4 * 8)) - | ((u64) a[2] << (u64) (3 * 8)) - | ((u64) a[3] << (u64) (2 * 8)) - | ((u64) a[4] << (u64) (1 * 8)) | ((u64) a[5] << (u64) (0 * 8))); -} - -static inline int -ethernet_mac_address_is_multicast_u64 (u64 a) -{ - return (a & (1ULL << (5 * 8))) != 0; -} - -static_always_inline int -ethernet_frame_is_tagged (u16 type) -{ -#if __SSE4_2__ - const __m128i ethertype_mask = _mm_set_epi16 (ETHERNET_TYPE_VLAN, - ETHERNET_TYPE_DOT1AD, - ETHERNET_TYPE_VLAN_9100, - ETHERNET_TYPE_VLAN_9200, - /* duplicate last one to - fill register */ - ETHERNET_TYPE_VLAN_9200, - ETHERNET_TYPE_VLAN_9200, - ETHERNET_TYPE_VLAN_9200, - ETHERNET_TYPE_VLAN_9200); - - __m128i r = _mm_set1_epi16 (type); - r = _mm_cmpeq_epi16 (ethertype_mask, r); - return !_mm_test_all_zeros (r, r); -#else - if ((type == ETHERNET_TYPE_VLAN) || - (type == ETHERNET_TYPE_DOT1AD) || - (type == ETHERNET_TYPE_VLAN_9100) || (type == ETHERNET_TYPE_VLAN_9200)) - return 1; -#endif - return 0; -} - -/* Max. sized ethernet/vlan header for parsing. */ -typedef struct -{ - ethernet_header_t ethernet; - - /* Allow up to 2 stacked vlan headers. */ - ethernet_vlan_header_t vlan[2]; -} ethernet_max_header_t; - -struct vnet_hw_interface_t; -/* Ethernet flag change callback. */ -typedef u32 (ethernet_flag_change_function_t) - (vnet_main_t * vnm, struct vnet_hw_interface_t * hi, u32 flags); - -#define ETHERNET_MIN_PACKET_BYTES 64 -#define ETHERNET_MAX_PACKET_BYTES 9216 - -/* Ethernet interface instance. */ -typedef struct ethernet_interface -{ - - /* Accept all packets (promiscuous mode). */ -#define ETHERNET_INTERFACE_FLAG_ACCEPT_ALL (1 << 0) -#define ETHERNET_INTERFACE_FLAG_CONFIG_PROMISC(flags) \ - (((flags) & ~ETHERNET_INTERFACE_FLAG_ACCEPT_ALL) == 0) - - /* Change MTU on interface from hw interface structure */ -#define ETHERNET_INTERFACE_FLAG_MTU (1 << 1) -#define ETHERNET_INTERFACE_FLAG_CONFIG_MTU(flags) \ - ((flags) & ETHERNET_INTERFACE_FLAG_MTU) - - /* Callback, e.g. to turn on/off promiscuous mode */ - ethernet_flag_change_function_t *flag_change; - - u32 driver_instance; - - /* Ethernet (MAC) address for this interface. */ - u8 address[6]; -} ethernet_interface_t; - -extern vnet_hw_interface_class_t ethernet_hw_interface_class; - -typedef struct -{ - /* Name (a c string). */ - char *name; - - /* Ethernet type in host byte order. */ - ethernet_type_t type; - - /* Node which handles this type. */ - u32 node_index; - - /* Next index for this type. */ - u32 next_index; -} ethernet_type_info_t; - -typedef enum -{ -#define ethernet_error(n,c,s) ETHERNET_ERROR_##n, -#include <vnet/ethernet/error.def> -#undef ethernet_error - ETHERNET_N_ERROR, -} ethernet_error_t; - - -// Structs used when parsing packet to find sw_if_index - -typedef struct -{ - u32 sw_if_index; - u32 flags; - // config entry is-valid flag - // exact match flags (valid if packet has 0/1/2/3 tags) - // L2 vs L3 forwarding mode -#define SUBINT_CONFIG_MATCH_0_TAG (1<<0) -#define SUBINT_CONFIG_MATCH_1_TAG (1<<1) -#define SUBINT_CONFIG_MATCH_2_TAG (1<<2) -#define SUBINT_CONFIG_MATCH_3_TAG (1<<3) -#define SUBINT_CONFIG_VALID (1<<4) -#define SUBINT_CONFIG_L2 (1<<5) - -} subint_config_t; - -always_inline u32 -eth_create_valid_subint_match_flags (u32 num_tags) -{ - return SUBINT_CONFIG_VALID | (1 << num_tags); -} - - -typedef struct -{ - subint_config_t untagged_subint; - subint_config_t default_subint; - u16 dot1q_vlans; // pool id for vlan table - u16 dot1ad_vlans; // pool id for vlan table -} main_intf_t; - -typedef struct -{ - subint_config_t single_tag_subint; - subint_config_t inner_any_subint; - u32 qinqs; // pool id for qinq table -} vlan_intf_t; - -typedef struct -{ - vlan_intf_t vlans[ETHERNET_N_VLAN]; -} vlan_table_t; - -typedef struct -{ - subint_config_t subint; -} qinq_intf_t; - -typedef struct -{ - qinq_intf_t vlans[ETHERNET_N_VLAN]; -} qinq_table_t; - -// Structure mapping to a next index based on ethertype. -// Common ethertypes are stored explicitly, others are -// stored in a sparse table. -typedef struct -{ - /* Sparse vector mapping ethernet type in network byte order - to next index. */ - u16 *input_next_by_type; - u32 *sparse_index_by_input_next_index; - - /* cached next indexes for common ethertypes */ - u32 input_next_ip4; - u32 input_next_ip6; - u32 input_next_mpls; -} next_by_ethertype_t; - -typedef struct -{ - vlib_main_t *vlib_main; - - /* next node index for the L3 input node of each ethertype */ - next_by_ethertype_t l3_next; - - /* next node index for L2 interfaces */ - u32 l2_next; - - /* flag and next node index for L3 redirect */ - u32 redirect_l3; - u32 redirect_l3_next; - - /* Pool of ethernet interface instances. */ - ethernet_interface_t *interfaces; - - ethernet_type_info_t *type_infos; - - /* Hash tables mapping name/type to type info index. */ - uword *type_info_by_name, *type_info_by_type; - - // The root of the vlan parsing tables. A vector with one element - // for each main interface, indexed by hw_if_index. - main_intf_t *main_intfs; - - // Pool of vlan tables - vlan_table_t *vlan_pool; - - // Pool of qinq tables; - qinq_table_t *qinq_pool; - - /* Set to one to use AB.CD.EF instead of A:B:C:D:E:F as ethernet format. */ - int format_ethernet_address_16bit; - - /* debug: make sure we don't wipe out an ethernet registration by mistake */ - u8 next_by_ethertype_register_called; - - /* Feature arc index */ - u8 output_feature_arc_index; -} ethernet_main_t; - -ethernet_main_t ethernet_main; - -always_inline ethernet_type_info_t * -ethernet_get_type_info (ethernet_main_t * em, ethernet_type_t type) -{ - uword *p = hash_get (em->type_info_by_type, type); - return p ? vec_elt_at_index (em->type_infos, p[0]) : 0; -} - -ethernet_interface_t *ethernet_get_interface (ethernet_main_t * em, - u32 hw_if_index); - -clib_error_t *ethernet_register_interface (vnet_main_t * vnm, - u32 dev_class_index, - u32 dev_instance, - u8 * address, - u32 * hw_if_index_return, - ethernet_flag_change_function_t - flag_change); - -void ethernet_delete_interface (vnet_main_t * vnm, u32 hw_if_index); - -/* Register given node index to take input for given ethernet type. */ -void -ethernet_register_input_type (vlib_main_t * vm, - ethernet_type_t type, u32 node_index); - -/* Register given node index to take input for packet from L2 interfaces. */ -void ethernet_register_l2_input (vlib_main_t * vm, u32 node_index); - -/* Register given node index to take redirected L3 traffic, and enable L3 redirect */ -void ethernet_register_l3_redirect (vlib_main_t * vm, u32 node_index); - -/* Formats ethernet address X:X:X:X:X:X */ -u8 *format_ethernet_address (u8 * s, va_list * args); -u8 *format_ethernet_type (u8 * s, va_list * args); -u8 *format_ethernet_vlan_tci (u8 * s, va_list * va); -u8 *format_ethernet_header (u8 * s, va_list * args); -u8 *format_ethernet_header_with_length (u8 * s, va_list * args); - -/* Parse ethernet address in either X:X:X:X:X:X unix or X.X.X cisco format. */ -uword unformat_ethernet_address (unformat_input_t * input, va_list * args); - -/* Parse ethernet type as 0xXXXX or type name from ethernet/types.def. - In either host or network byte order. */ -uword -unformat_ethernet_type_host_byte_order (unformat_input_t * input, - va_list * args); -uword -unformat_ethernet_type_net_byte_order (unformat_input_t * input, - va_list * args); - -/* Parse ethernet header. */ -uword unformat_ethernet_header (unformat_input_t * input, va_list * args); - -/* Parse ethernet interface name; return hw_if_index. */ -uword unformat_ethernet_interface (unformat_input_t * input, va_list * args); - -uword unformat_pg_ethernet_header (unformat_input_t * input, va_list * args); - -always_inline void -ethernet_setup_node (vlib_main_t * vm, u32 node_index) -{ - vlib_node_t *n = vlib_get_node (vm, node_index); - pg_node_t *pn = pg_get_node (node_index); - - n->format_buffer = format_ethernet_header_with_length; - n->unformat_buffer = unformat_ethernet_header; - pn->unformat_edit = unformat_pg_ethernet_header; -} - -always_inline ethernet_header_t * -ethernet_buffer_get_header (vlib_buffer_t * b) -{ - return (void *) - (b->data + vnet_buffer (b)->ethernet.start_of_ethernet_header); -} - -/** Returns the number of VLAN headers in the current Ethernet frame in the - * buffer. Returns 0, 1, 2 for the known header count. The value 3 indicates - * the number of headers is not known. - */ -#define ethernet_buffer_get_vlan_count(b) ( \ - ((b)->flags & ETH_BUFFER_VLAN_BITS) >> LOG2_ETH_BUFFER_VLAN_1_DEEP \ -) - -/** Sets the number of VLAN headers in the current Ethernet frame in the - * buffer. Values 0, 1, 2 indicate the header count. The value 3 indicates - * the number of headers is not known. - */ -#define ethernet_buffer_set_vlan_count(b, v) ( \ - (b)->flags = ((b)->flags & ~ETH_BUFFER_VLAN_BITS) | \ - (((v) << LOG2_ETH_BUFFER_VLAN_1_DEEP) & ETH_BUFFER_VLAN_BITS) \ -) - -/** Adjusts the vlan count by the delta in 'v' */ -#define ethernet_buffer_adjust_vlan_count(b, v) ( \ - ethernet_buffer_set_vlan_count(b, \ - (word)ethernet_buffer_get_vlan_count(b) + (word)(v)) \ -) - -/** Adjusts the vlan count by the header size byte delta in 'v' */ -#define ethernet_buffer_adjust_vlan_count_by_bytes(b, v) ( \ - (b)->flags = ((b)->flags & ~ETH_BUFFER_VLAN_BITS) | (( \ - ((b)->flags & ETH_BUFFER_VLAN_BITS) + \ - ((v) << (LOG2_ETH_BUFFER_VLAN_1_DEEP - 2)) \ - ) & ETH_BUFFER_VLAN_BITS) \ -) - -/** - * Determine the size of the Ethernet headers of the current frame in - * the buffer. This uses the VLAN depth flags that are set by - * ethernet-input. Because these flags are stored in the vlib_buffer_t - * "flags" field this count is valid regardless of the node so long as it's - * checked downstream of ethernet-input; That is, the value is not stored in - * the opaque space. - */ -#define ethernet_buffer_header_size(b) ( \ - ethernet_buffer_get_vlan_count((b)) * sizeof(ethernet_vlan_header_t) + \ - sizeof(ethernet_header_t) \ -) - -ethernet_main_t *ethernet_get_main (vlib_main_t * vm); -u32 ethernet_set_flags (vnet_main_t * vnm, u32 hw_if_index, u32 flags); -void ethernet_sw_interface_set_l2_mode (vnet_main_t * vnm, u32 sw_if_index, - u32 l2); -void ethernet_sw_interface_set_l2_mode_noport (vnet_main_t * vnm, - u32 sw_if_index, u32 l2); -void ethernet_set_rx_redirect (vnet_main_t * vnm, vnet_hw_interface_t * hi, - u32 enable); - -int -vnet_arp_set_ip4_over_ethernet (vnet_main_t * vnm, - u32 sw_if_index, void *a_arg, int is_static); - -int -vnet_arp_unset_ip4_over_ethernet (vnet_main_t * vnm, - u32 sw_if_index, void *a_arg); - -int vnet_proxy_arp_fib_reset (u32 fib_id); - -clib_error_t *next_by_ethertype_init (next_by_ethertype_t * l3_next); -clib_error_t *next_by_ethertype_register (next_by_ethertype_t * l3_next, - u32 ethertype, u32 next_index); - -int vnet_create_loopback_interface (u32 * sw_if_indexp, u8 * mac_address); -int vnet_delete_loopback_interface (u32 sw_if_index); -int vnet_delete_sub_interface (u32 sw_if_index); - -// Perform ethernet subinterface classification table lookups given -// the ports's sw_if_index and fields extracted from the ethernet header. -// The resulting tables are used by identify_subint(). -always_inline void -eth_vlan_table_lookups (ethernet_main_t * em, - vnet_main_t * vnm, - u32 port_sw_if_index0, - u16 first_ethertype, - u16 outer_id, - u16 inner_id, - vnet_hw_interface_t ** hi, - main_intf_t ** main_intf, - vlan_intf_t ** vlan_intf, qinq_intf_t ** qinq_intf) -{ - vlan_table_t *vlan_table; - qinq_table_t *qinq_table; - u32 vlan_table_id; - - // Read the main, vlan, and qinq interface table entries - // TODO: Consider if/how to prefetch tables. Also consider - // single-entry cache to skip table lookups and identify_subint() - // processing. - *hi = vnet_get_sup_hw_interface (vnm, port_sw_if_index0); - *main_intf = vec_elt_at_index (em->main_intfs, (*hi)->hw_if_index); - - // Always read the vlan and qinq tables, even if there are not that - // many tags on the packet. This makes the lookups and comparisons - // easier (and less branchy). - vlan_table_id = (first_ethertype == ETHERNET_TYPE_DOT1AD) ? - (*main_intf)->dot1ad_vlans : (*main_intf)->dot1q_vlans; - vlan_table = vec_elt_at_index (em->vlan_pool, vlan_table_id); - *vlan_intf = &vlan_table->vlans[outer_id]; - - qinq_table = vec_elt_at_index (em->qinq_pool, (*vlan_intf)->qinqs); - *qinq_intf = &qinq_table->vlans[inner_id]; -} - - -// Determine the subinterface for this packet, given the result of the -// vlan table lookups and vlan header parsing. Check the most specific -// matches first. -// Returns 1 if a matching subinterface was found, otherwise returns 0. -always_inline u32 -eth_identify_subint (vnet_hw_interface_t * hi, - vlib_buffer_t * b0, - u32 match_flags, - main_intf_t * main_intf, - vlan_intf_t * vlan_intf, - qinq_intf_t * qinq_intf, - u32 * new_sw_if_index, u8 * error0, u32 * is_l2) -{ - subint_config_t *subint; - - // Each comparison is checking both the valid flag and the number of tags - // (incorporating exact-match/non-exact-match). - - // check for specific double tag - subint = &qinq_intf->subint; - if ((subint->flags & match_flags) == match_flags) - goto matched; - - // check for specific outer and 'any' inner - subint = &vlan_intf->inner_any_subint; - if ((subint->flags & match_flags) == match_flags) - goto matched; - - // check for specific single tag - subint = &vlan_intf->single_tag_subint; - if ((subint->flags & match_flags) == match_flags) - goto matched; - - // check for untagged interface - subint = &main_intf->untagged_subint; - if ((subint->flags & match_flags) == match_flags) - goto matched; - - // check for default interface - subint = &main_intf->default_subint; - if ((subint->flags & match_flags) == match_flags) - goto matched; - - // No matching subinterface - *new_sw_if_index = ~0; - *error0 = ETHERNET_ERROR_UNKNOWN_VLAN; - *is_l2 = 0; - return 0; - -matched: - *new_sw_if_index = subint->sw_if_index; - *is_l2 = subint->flags & SUBINT_CONFIG_L2; - return 1; -} - -// Compare two ethernet macs. Return 1 if they are the same, 0 if different -always_inline u32 -eth_mac_equal (u8 * mac1, u8 * mac2) -{ - return (*((u32 *) (mac1 + 0)) == *((u32 *) (mac2 + 0)) && - *((u32 *) (mac1 + 2)) == *((u32 *) (mac2 + 2))); -} - - -always_inline ethernet_main_t * -vnet_get_ethernet_main (void) -{ - return ðernet_main; -} - -void vnet_register_ip4_arp_resolution_event (vnet_main_t * vnm, - void *address_arg, - uword node_index, - uword type_opaque, uword data); - - -int vnet_add_del_ip4_arp_change_event (vnet_main_t * vnm, - void *data_callback, - u32 pid, - void *address_arg, - uword node_index, - uword type_opaque, - uword data, int is_add); - -void ethernet_arp_change_mac (u32 sw_if_index); -void ethernet_ndp_change_mac (u32 sw_if_index); - -void arp_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai); - -void ethernet_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai); -u8 *ethernet_build_rewrite (vnet_main_t * vnm, - u32 sw_if_index, - vnet_link_t link_type, const void *dst_address); - -extern vlib_node_registration_t ethernet_input_node; - -#endif /* included_ethernet_h */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |