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# Copyright (c) 2018 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.

cmake_minimum_required(VERSION 3.5 FATAL_ERROR)

project(vpp C)

include(CheckCCompilerFlag)
include(cmake/misc.cmake)
include(cmake/cpu.cmake)
include(cmake/ccache.cmake)

##############################################################################
# VPP Version
##############################################################################
execute_process(
  WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
  COMMAND scripts/version
  OUTPUT_VARIABLE VPP_VERSION
  OUTPUT_STRIP_TRAILING_WHITESPACE
)
string(REPLACE "-" ";" VPP_LIB_VERSION ${VPP_VERSION})
list(GET VPP_LIB_VERSION 0 VPP_LIB_VERSION)

##############################################################################
# cross compiling
##############################################################################
if(CMAKE_CROSSCOMPILING)
  set(CMAKE_IGNORE_PATH
    /usr/lib/${CMAKE_HOST_SYSTEM_PROCESSOR}-linux-gnu/
    /usr/lib/${CMAKE_HOST_SYSTEM_PROCESSOR}-linux-gnu/lib/
  )
endif()
set(CMAKE_C_COMPILER_TARGET ${CMAKE_SYSTEM_PROCESSOR}-linux-gnu)

##############################################################################
# build config
##############################################################################
check_c_compiler_flag("-Wno-address-of-packed-member"
		      compiler_flag_no_address_of_packed_member)

set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)

if (CMAKE_BUILD_TYPE)
  set(CMAKE_C_FLAGS "-g -fPIC -Werror -Wall ${CMAKE_C_FLAGS}")
endif()

if (compiler_flag_no_address_of_packed_member)
  set(CMAKE_C_FLAGS "-Wno-address-of-packed-member ${CMAKE_C_FLAGS}")
endif()

# release
list(APPEND BUILD_TYPES "release")
string(CONCAT CMAKE_C_FLAGS_RELEASE
  "-O2 "
  "-fstack-protector "
  "-DFORTIFY_SOURCE=2 "
  "-fno-common "
)

string(CONCAT CMAKE_EXE_LINKER_FLAGS_RELEASE "-pie")

# debug
list(APPEND BUILD_TYPES "debug")
string(CONCAT CMAKE_C_FLAGS_DEBUG
  "-O0 "
  "-DCLIB_DEBUG "
  "-fstack-protector "
  "-DFORTIFY_SOURCE=2 "
  "-fno-common "
)

# coverity
list(APPEND BUILD_TYPES "coverity")
string(CONCAT CMAKE_C_FLAGS_COVERITY "-O2 -D__COVERITY__")

# gcov
list(APPEND BUILD_TYPES "gcov")
string(CONCAT CMAKE_C_FLAGS_GCOV
  "-O0 "
  "-DCLIB_DEBUG "
  "-DCLIB_GCOV "
  "-fprofile-arcs "
  "-ftest-coverage ")

string(TOUPPER "${CMAKE_BUILD_TYPE}" CMAKE_BUILD_TYPE_UC)


string(REPLACE ";" " " BUILD_TYPES "${BUILD_TYPES}")
set_property(CACHE CMAKE_BUILD_TYPE PROPERTY
	     HELPSTRING "Build type - valid options are: ${BUILD_TYPES}")

##############################################################################
# sanitizers
##############################################################################

option(ENABLE_SANITIZE_ADDR "Enable Address Sanitizer" OFF)
if (ENABLE_SANITIZE_ADDR)
  set(CMAKE_C_FLAGS "-fsanitize=address --param asan-stack=0 -DCLIB_SANITIZE_ADDR ${CMAKE_C_FLAGS}")
  set(CMAKE_EXE_LINKER_FLAGS "-fsanitize=address ${CMAKE_EXE_LINKER_FLAGS}")
  set(CMAKE_SHARED_LINKER_FLAGS "-fsanitize=address ${CMAKE_SHARED_LINKER_FLAGS}")
endif (ENABLE_SANITIZE_ADDR)

##############################################################################
# install config
##############################################################################
set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib")
set(CMAKE_INSTALL_MESSAGE NEVER)

include_directories (
	${CMAKE_SOURCE_DIR}
	${CMAKE_BINARY_DIR}
	${CMAKE_BINARY_DIR}/include
)
set(CMAKE_INSTALL_DEFAULT_COMPONENT_NAME "vpp")

set(THREADS_PREFER_PTHREAD_FLAG ON)
find_package(Threads REQUIRED)

include(cmake/syscall.cmake)
include(cmake/api.cmake)
include(cmake/library.cmake)
include(cmake/exec.cmake)
include(cmake/plugin.cmake)

##############################################################################
# subdirs - order matters
##############################################################################
if("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux")
  find_package(OpenSSL REQUIRED)
  set(SUBDIRS
    vppinfra svm vlib vlibmemory vlibapi vnet vpp vat vcl plugins
    vpp-api tools/vppapigen tools/g2 tools/elftool tools/perftool cmake pkg
    tools/appimage
  )
elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Darwin")
  set(SUBDIRS vppinfra)
else()
  message(FATAL_ERROR "Unsupported system: ${CMAKE_SYSTEM_NAME}")
endif()

foreach(DIR ${SUBDIRS})
  add_subdirectory(${DIR})
endforeach()

##############################################################################
# detect if we are inside git repo and add configure dependency
##############################################################################
execute_process(
  WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
  COMMAND git rev-parse --show-toplevel
  OUTPUT_VARIABLE VPP_GIT_TOPLEVEL_DIR
  OUTPUT_STRIP_TRAILING_WHITESPACE
  ERROR_QUIET
)

if (VPP_GIT_TOPLEVEL_DIR)
  set_property(
    DIRECTORY APPEND PROPERTY
    CMAKE_CONFIGURE_DEPENDS ${VPP_GIT_TOPLEVEL_DIR}/.git/index
  )
endif()

##############################################################################
# print configuration
##############################################################################
message(STATUS "Configuration:")
pr("VPP version" "${VPP_VERSION}")
pr("VPP library version" "${VPP_LIB_VERSION}")
pr("GIT toplevel dir" "${VPP_GIT_TOPLEVEL_DIR}")
pr("Build type" "${CMAKE_BUILD_TYPE}")
pr("C flags" "${CMAKE_C_FLAGS}${CMAKE_C_FLAGS_${CMAKE_BUILD_TYPE_UC}}")
pr("Linker flags (apps)" "${CMAKE_EXE_LINKER_FLAGS}${CMAKE_EXE_LINKER_FLAGS_${CMAKE_BUILD_TYPE_UC}}")
pr("Linker flags (libs)" "${CMAKE_SHARED_LINKER_FLAGS}${CMAKE_SHARED_LINKER_FLAGS_${CMAKE_BUILD_TYPE_UC}}")
pr("Host processor" "${CMAKE_HOST_SYSTEM_PROCESSOR}")
pr("Target processor" "${CMAKE_SYSTEM_PROCESSOR}")
pr("Prefix path" "${CMAKE_PREFIX_PATH}")
pr("Install prefix" "${CMAKE_INSTALL_PREFIX}")
class="n">vlib_packet_template_t ip4_arp_request_packet_template; /** Seed for Jenkins hash used to compute ip4 flow hash. */ u32 flow_hash_seed; /** @brief Template information for VPP generated packets */ struct { /** TTL to use for host generated packets. */ u8 ttl; /** TOS byte to use for host generated packets. */ u8 tos; u8 pad[2]; } host_config; /** Heapsize for the Mtries */ uword mtrie_heap_size; /** The memory heap for the mtries */ void *mtrie_mheap; /** ARP throttling */ throttle_t arp_throttle; } ip4_main_t; #define ARP_THROTTLE_BITS (512) /** Global ip4 main structure. */ extern ip4_main_t ip4_main; extern char *ip4_error_strings[]; /** Global ip4 input node. Errors get attached to ip4 input node. */ extern vlib_node_registration_t ip4_input_node; extern vlib_node_registration_t ip4_lookup_node; extern vlib_node_registration_t ip4_local_node; extern vlib_node_registration_t ip4_rewrite_node; extern vlib_node_registration_t ip4_rewrite_mcast_node; extern vlib_node_registration_t ip4_rewrite_local_node; extern vlib_node_registration_t ip4_arp_node; extern vlib_node_registration_t ip4_glean_node; extern vlib_node_registration_t ip4_midchain_node; extern vlib_node_registration_t ip4_punt_node; always_inline uword ip4_destination_matches_route (const ip4_main_t * im, const ip4_address_t * key, const ip4_address_t * dest, uword dest_length) { return 0 == ((key->data_u32 ^ dest->data_u32) & im->fib_masks[dest_length]); } always_inline uword ip4_destination_matches_interface (ip4_main_t * im, ip4_address_t * key, ip_interface_address_t * ia) { ip4_address_t *a = ip_interface_address_get_address (&im->lookup_main, ia); return ip4_destination_matches_route (im, key, a, ia->address_length); } always_inline int ip4_src_address_for_packet (ip_lookup_main_t * lm, u32 sw_if_index, ip4_address_t * src) { u32 if_add_index = lm->if_address_pool_index_by_sw_if_index[sw_if_index]; if (PREDICT_TRUE (if_add_index != ~0)) { ip_interface_address_t *if_add = pool_elt_at_index (lm->if_address_pool, if_add_index); ip4_address_t *if_ip = ip_interface_address_get_address (lm, if_add); *src = *if_ip; return 0; } else { src->as_u32 = 0; } return (!0); } /* Find interface address which matches destination. */ always_inline ip4_address_t * ip4_interface_address_matching_destination (ip4_main_t * im, const ip4_address_t * dst, u32 sw_if_index, ip_interface_address_t ** result_ia) { ip_lookup_main_t *lm = &im->lookup_main; ip_interface_address_t *ia; ip4_address_t *result = 0; /* *INDENT-OFF* */ foreach_ip_interface_address (lm, ia, sw_if_index, 1 /* honor unnumbered */, ({ ip4_address_t * a = ip_interface_address_get_address (lm, ia); if (ip4_destination_matches_route (im, dst, a, ia->address_length)) { result = a; break; } })); /* *INDENT-ON* */ if (result_ia) *result_ia = result ? ia : 0; return result; } ip4_address_t *ip4_interface_first_address (ip4_main_t * im, u32 sw_if_index, ip_interface_address_t ** result_ia); clib_error_t *ip4_add_del_interface_address (vlib_main_t * vm, u32 sw_if_index, ip4_address_t * address, u32 address_length, u32 is_del); void ip4_directed_broadcast (u32 sw_if_index, u8 enable); void ip4_sw_interface_enable_disable (u32 sw_if_index, u32 is_enable); int ip4_address_compare (ip4_address_t * a1, ip4_address_t * a2); uword ip4_udp_register_listener (vlib_main_t * vm, u16 dst_port, u32 next_node_index); u16 ip4_tcp_udp_compute_checksum (vlib_main_t * vm, vlib_buffer_t * p0, ip4_header_t * ip0); void ip4_register_protocol (u32 protocol, u32 node_index); void ip4_unregister_protocol (u32 protocolx); serialize_function_t serialize_vnet_ip4_main, unserialize_vnet_ip4_main; int vnet_set_ip4_flow_hash (u32 table_id, flow_hash_config_t flow_hash_config); int vnet_set_ip4_classify_intfc (vlib_main_t * vm, u32 sw_if_index, u32 table_index); void ip4_punt_policer_add_del (u8 is_add, u32 policer_index); void ip4_punt_redirect_add (u32 rx_sw_if_index, u32 tx_sw_if_index, ip46_address_t * nh); void ip4_punt_redirect_add_paths (u32 rx_sw_if_index, fib_route_path_t * paths); void ip4_punt_redirect_del (u32 rx_sw_if_index); /* Compute flow hash. We'll use it to select which adjacency to use for this flow. And other things. */ always_inline u32 ip4_compute_flow_hash (const ip4_header_t * ip, flow_hash_config_t flow_hash_config) { tcp_header_t *tcp = (void *) (ip + 1); u32 a, b, c, t1, t2; uword is_tcp_udp = (ip->protocol == IP_PROTOCOL_TCP || ip->protocol == IP_PROTOCOL_UDP); t1 = (flow_hash_config & IP_FLOW_HASH_SRC_ADDR) ? ip->src_address.data_u32 : 0; t2 = (flow_hash_config & IP_FLOW_HASH_DST_ADDR) ? ip->dst_address.data_u32 : 0; a = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? t2 : t1; b = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? t1 : t2; t1 = is_tcp_udp ? tcp->src : 0; t2 = is_tcp_udp ? tcp->dst : 0; t1 = (flow_hash_config & IP_FLOW_HASH_SRC_PORT) ? t1 : 0; t2 = (flow_hash_config & IP_FLOW_HASH_DST_PORT) ? t2 : 0; if (flow_hash_config & IP_FLOW_HASH_SYMMETRIC) { if (b < a) { c = a; a = b; b = c; } if (t2 < t1) { t2 += t1; t1 = t2 - t1; t2 = t2 - t1; } } b ^= (flow_hash_config & IP_FLOW_HASH_PROTO) ? ip->protocol : 0; c = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? (t1 << 16) | t2 : (t2 << 16) | t1; hash_v3_mix32 (a, b, c); hash_v3_finalize32 (a, b, c); return c; } void ip4_forward_next_trace (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame, vlib_rx_or_tx_t which_adj_index); u8 *format_ip4_forward_next_trace (u8 * s, va_list * args); u32 ip4_tcp_udp_validate_checksum (vlib_main_t * vm, vlib_buffer_t * p0); #define IP_DF 0x4000 /* don't fragment */ /** * Push IPv4 header to buffer * * This does not support fragmentation. * * @param vm - vlib_main * @param b - buffer to write the header to * @param src - source IP * @param dst - destination IP * @param prot - payload proto * * @return - pointer to start of IP header */ always_inline void * vlib_buffer_push_ip4 (vlib_main_t * vm, vlib_buffer_t * b, ip4_address_t * src, ip4_address_t * dst, int proto, u8 csum_offload) { ip4_header_t *ih; /* make some room */ ih = vlib_buffer_push_uninit (b, sizeof (ip4_header_t)); ih->ip_version_and_header_length = 0x45; ih->tos = 0; ih->length = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b)); /* No fragments */ ih->flags_and_fragment_offset = clib_host_to_net_u16 (IP_DF); ih->ttl = 255; ih->protocol = proto; ih->src_address.as_u32 = src->as_u32; ih->dst_address.as_u32 = dst->as_u32; vnet_buffer (b)->l3_hdr_offset = (u8 *) ih - b->data; b->flags |= VNET_BUFFER_F_IS_IP4 | VNET_BUFFER_F_L3_HDR_OFFSET_VALID; /* Offload ip4 header checksum generation */ if (csum_offload) { ih->checksum = 0; b->flags |= VNET_BUFFER_F_OFFLOAD_IP_CKSUM; } else ih->checksum = ip4_header_checksum (ih); return ih; } always_inline u32 vlib_buffer_get_ip4_fib_index (vlib_buffer_t * b) { u32 fib_index, sw_if_index; sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX]; fib_index = vnet_buffer (b)->sw_if_index[VLIB_TX]; return (fib_index == (u32) ~ 0) ? vec_elt (ip4_main.fib_index_by_sw_if_index, sw_if_index) : fib_index; } #endif /* included_ip_ip4_h */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */