#include <vnet/lisp-cp/packets.h>
#include <vnet/lisp-cp/lisp_cp_messages.h>
-#include <vnet/ip/udp_packet.h>
+#include <vnet/udp/udp_packet.h>
/* Returns IP ID for the packet */
/* static u16 ip_id = 0;
} phu;
/* pseudo-header */
- memset (&phu, 0, sizeof (phu));
+ 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);
return uh;
}
-void *
-pkt_push_ipv4 (vlib_main_t * vm, vlib_buffer_t * b, ip4_address_t * src,
- ip4_address_t * dst, int proto)
-{
- 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));
-
- /* iph->fragment_id = clib_host_to_net_u16(get_IP_ID ()); */
-
- /* TODO: decide if we allow fragments in case of control */
- 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;
-
- ih->checksum = ip4_header_checksum (ih);
- return ih;
-}
-
-void *
-pkt_push_ipv6 (vlib_main_t * vm, vlib_buffer_t * b, ip6_address_t * src,
- ip6_address_t * dst, int proto)
-{
- ip6_header_t *ip6h;
- u16 payload_length;
-
- /* make some room */
- ip6h = vlib_buffer_push_uninit (b, sizeof (ip6_header_t));
-
- ip6h->ip_version_traffic_class_and_flow_label =
- clib_host_to_net_u32 (0x6 << 28);
-
- /* calculate ip6 payload length */
- payload_length = vlib_buffer_length_in_chain (vm, b);
- payload_length -= sizeof (*ip6h);
-
- ip6h->payload_length = clib_host_to_net_u16 (payload_length);
-
- ip6h->hop_limit = 0xff;
- ip6h->protocol = proto;
- clib_memcpy (ip6h->src_address.as_u8, src->as_u8,
- sizeof (ip6h->src_address));
- clib_memcpy (ip6h->dst_address.as_u8, dst->as_u8,
- sizeof (ip6h->src_address));
-
- return ip6h;
-}
-
void *
pkt_push_ip (vlib_main_t * vm, vlib_buffer_t * b, ip_address_t * src,
- ip_address_t * dst, u32 proto)
+ ip_address_t * dst, u32 proto, u8 csum_offload)
{
if (ip_addr_version (src) != ip_addr_version (dst))
{
switch (ip_addr_version (src))
{
case IP4:
- return pkt_push_ipv4 (vm, b, &ip_addr_v4 (src), &ip_addr_v4 (dst),
- proto);
+ return vlib_buffer_push_ip4 (vm, b, &ip_addr_v4 (src),
+ &ip_addr_v4 (dst), proto, csum_offload);
break;
case IP6:
- return pkt_push_ipv6 (vm, b, &ip_addr_v6 (src), &ip_addr_v6 (dst),
- proto);
+ return vlib_buffer_push_ip6 (vm, b, &ip_addr_v6 (src),
+ &ip_addr_v6 (dst), proto);
break;
}
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)
+ ip_address_t * sip, ip_address_t * dip, u8 csum_offload)
{
u16 udpsum;
udp_header_t *uh;
uh = pkt_push_udp (vm, b, sp, dp);
- ih = pkt_push_ip (vm, b, sip, dip, IP_PROTOCOL_UDP);
-
- udpsum = udp_checksum (uh, clib_net_to_host_u16 (uh->length), ih,
- ip_addr_version (sip));
- if (udpsum == (u16) ~ 0)
+ if (csum_offload)
{
- clib_warning ("Failed UDP checksum! Discarding");
- return 0;
+ 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;
}
- uh->checksum = udpsum;
return ih;
}
ecm_hdr_t *h;
h = vlib_buffer_push_uninit (b, sizeof (h[0]));
- memset (h, 0, sizeof (h[0]));
+ clib_memset (h, 0, sizeof (h[0]));
h->type = LISP_ENCAP_CONTROL_TYPE;
- memset (h->reserved2, 0, sizeof (h->reserved2));
+ clib_memset (h->reserved2, 0, sizeof (h->reserved2));
return h;
}