diff options
author | Neale Ranns <nranns@cisco.com> | 2020-09-21 08:17:51 +0000 |
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committer | Damjan Marion <dmarion@me.com> | 2020-09-22 16:01:29 +0000 |
commit | 2b202bc4b2d870d76bfe6fb1906ae62e253cec72 (patch) | |
tree | b05011f96b8d9d080647323e4609af0fac90b612 /src/vnet/lisp-cp/packets.c | |
parent | b468773aa4164bf52e0751fdf780f67248037cc0 (diff) |
lisp: Move to plugin
Type: refactor
Change-Id: I54df533a8f863c4e49742903cf2457f18b4fc506
Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/lisp-cp/packets.c')
-rw-r--r-- | src/vnet/lisp-cp/packets.c | 226 |
1 files changed, 0 insertions, 226 deletions
diff --git a/src/vnet/lisp-cp/packets.c b/src/vnet/lisp-cp/packets.c deleted file mode 100644 index bbc3ad64572..00000000000 --- a/src/vnet/lisp-cp/packets.c +++ /dev/null @@ -1,226 +0,0 @@ -/* - * Copyright (c) 2016 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/lisp-cp/packets.h> -#include <vnet/lisp-cp/lisp_cp_messages.h> -#include <vnet/udp/udp_packet.h> - -/* Returns IP ID for the packet */ -/* static u16 ip_id = 0; -static inline u16 -get_IP_ID() -{ - ip_id++; - return (ip_id); -} */ - -u16 -udp_ip4_checksum (const void *b, u32 len, u8 * src, u8 * dst) -{ - const u16 *buf = b; - u16 *ip_src = (u16 *) src; - u16 *ip_dst = (u16 *) dst; - u32 length = len; - u32 sum = 0; - - while (len > 1) - { - sum += *buf++; - if (sum & 0x80000000) - sum = (sum & 0xFFFF) + (sum >> 16); - len -= 2; - } - - /* Add the padding if the packet length is odd */ - if (len & 1) - sum += *((u8 *) buf); - - /* Add the pseudo-header */ - sum += *(ip_src++); - sum += *ip_src; - - sum += *(ip_dst++); - sum += *ip_dst; - - sum += clib_host_to_net_u16 (IP_PROTOCOL_UDP); - sum += clib_host_to_net_u16 (length); - - /* Add the carries */ - while (sum >> 16) - sum = (sum & 0xFFFF) + (sum >> 16); - - /* Return the one's complement of sum */ - return ((u16) (~sum)); -} - -u16 -udp_ip6_checksum (ip6_header_t * ip6, udp_header_t * up, u32 len) -{ - size_t i; - register const u16 *sp; - u32 sum; - union - { - struct - { - ip6_address_t ph_src; - ip6_address_t ph_dst; - u32 ph_len; - u8 ph_zero[3]; - u8 ph_nxt; - } ph; - u16 pa[20]; - } phu; - - /* pseudo-header */ - clib_memset (&phu, 0, sizeof (phu)); - phu.ph.ph_src = ip6->src_address; - phu.ph.ph_dst = ip6->dst_address; - phu.ph.ph_len = clib_host_to_net_u32 (len); - phu.ph.ph_nxt = IP_PROTOCOL_UDP; - - sum = 0; - for (i = 0; i < sizeof (phu.pa) / sizeof (phu.pa[0]); i++) - sum += phu.pa[i]; - - sp = (const u16 *) up; - - for (i = 0; i < (len & ~1); i += 2) - sum += *sp++; - - if (len & 1) - sum += clib_host_to_net_u16 ((*(const u8 *) sp) << 8); - - while (sum > 0xffff) - sum = (sum & 0xffff) + (sum >> 16); - sum = ~sum & 0xffff; - - return (sum); -} - -u16 -udp_checksum (udp_header_t * uh, u32 udp_len, void *ih, u8 version) -{ - switch (version) - { - case AF_IP4: - return (udp_ip4_checksum (uh, udp_len, - ((ip4_header_t *) ih)->src_address.as_u8, - ((ip4_header_t *) ih)->dst_address.as_u8)); - case AF_IP6: - return (udp_ip6_checksum (ih, uh, udp_len)); - default: - return ~0; - } -} - -void * -pkt_push_udp (vlib_main_t * vm, vlib_buffer_t * b, u16 sp, u16 dp) -{ - udp_header_t *uh; - u16 udp_len = sizeof (udp_header_t) + vlib_buffer_length_in_chain (vm, b); - - uh = vlib_buffer_push_uninit (b, sizeof (*uh)); - - uh->src_port = clib_host_to_net_u16 (sp); - uh->dst_port = clib_host_to_net_u16 (dp); - uh->length = clib_host_to_net_u16 (udp_len); - uh->checksum = 0; - return uh; -} - -void * -pkt_push_ip (vlib_main_t * vm, vlib_buffer_t * b, ip_address_t * src, - ip_address_t * dst, u32 proto, u8 csum_offload) -{ - if (ip_addr_version (src) != ip_addr_version (dst)) - { - clib_warning ("src %U and dst %U IP have different AFI! Discarding!", - format_ip_address, src, format_ip_address, dst); - return 0; - } - - switch (ip_addr_version (src)) - { - case AF_IP4: - return vlib_buffer_push_ip4 (vm, b, &ip_addr_v4 (src), - &ip_addr_v4 (dst), proto, csum_offload); - break; - case AF_IP6: - return vlib_buffer_push_ip6 (vm, b, &ip_addr_v6 (src), - &ip_addr_v6 (dst), proto); - break; - } - - return 0; -} - -void * -pkt_push_udp_and_ip (vlib_main_t * vm, vlib_buffer_t * b, u16 sp, u16 dp, - ip_address_t * sip, ip_address_t * dip, u8 csum_offload) -{ - u16 udpsum; - udp_header_t *uh; - void *ih; - - uh = pkt_push_udp (vm, b, sp, dp); - - if (csum_offload) - { - ih = pkt_push_ip (vm, b, sip, dip, IP_PROTOCOL_UDP, 1); - b->flags |= VNET_BUFFER_F_OFFLOAD_UDP_CKSUM; - vnet_buffer (b)->l3_hdr_offset = (u8 *) ih - b->data; - vnet_buffer (b)->l4_hdr_offset = (u8 *) uh - b->data; - uh->checksum = 0; - } - else - { - ih = pkt_push_ip (vm, b, sip, dip, IP_PROTOCOL_UDP, 0); - udpsum = udp_checksum (uh, clib_net_to_host_u16 (uh->length), ih, - ip_addr_version (sip)); - if (udpsum == (u16) ~ 0) - { - clib_warning ("Failed UDP checksum! Discarding"); - return 0; - } - /* clear flags used for csum since we're not offloading */ - b->flags &= ~(VNET_BUFFER_F_IS_IP4 | VNET_BUFFER_F_IS_IP6); - uh->checksum = udpsum; - } - return ih; -} - -void * -pkt_push_ecm_hdr (vlib_buffer_t * b) -{ - ecm_hdr_t *h; - h = vlib_buffer_push_uninit (b, sizeof (h[0])); - - clib_memset (h, 0, sizeof (h[0])); - h->type = LISP_ENCAP_CONTROL_TYPE; - clib_memset (h->reserved2, 0, sizeof (h->reserved2)); - - return h; -} - -/* *INDENT-ON* */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |