From 0b04209edac55487c108ff5f2faf51cbd4c2cee7 Mon Sep 17 00:00:00 2001 From: Mohsin Kazmi Date: Fri, 17 Apr 2020 16:50:56 +0000 Subject: gso: add vxlan tunnel support Type: feature Change-Id: I85f6ec77187a4983c66c5e22fd39fbb2cef82902 Signed-off-by: Mohsin Kazmi --- src/vnet/interface_output.h | 95 +++++++++++++++++++++++++++++---------------- 1 file changed, 62 insertions(+), 33 deletions(-) (limited to 'src/vnet/interface_output.h') diff --git a/src/vnet/interface_output.h b/src/vnet/interface_output.h index 198ca282566..ef7aaa8999e 100644 --- a/src/vnet/interface_output.h +++ b/src/vnet/interface_output.h @@ -41,7 +41,44 @@ #define __INTERFACE_INLINES_H__ #include -#include +#include + +static_always_inline void +vnet_calc_ip4_checksums (vlib_main_t * vm, vlib_buffer_t * b, + ip4_header_t * ip4, tcp_header_t * th, + udp_header_t * uh) +{ + if (b->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM) + ip4->checksum = ip4_header_checksum (ip4); + if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM) + { + th->checksum = 0; + th->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4); + } + if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM) + { + uh->checksum = 0; + uh->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4); + } +} + +static_always_inline void +vnet_calc_ip6_checksums (vlib_main_t * vm, vlib_buffer_t * b, + ip6_header_t * ip6, tcp_header_t * th, + udp_header_t * uh) +{ + int bogus; + if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM) + { + th->checksum = 0; + th->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus); + } + if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM) + { + uh->checksum = 0; + uh->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus); + } +} static_always_inline void vnet_calc_checksums_inline (vlib_main_t * vm, vlib_buffer_t * b, @@ -52,59 +89,51 @@ vnet_calc_checksums_inline (vlib_main_t * vm, vlib_buffer_t * b, tcp_header_t *th; udp_header_t *uh; - ASSERT (!(is_ip4 && is_ip6)); - if (with_gso) { - gso_header_offset_t gho; - gho = vnet_gso_header_offset_parser (b, is_ip6); + generic_header_offset_t gho = { 0 }; + vnet_generic_header_offset_parser (b, &gho); + + ASSERT (gho.gho_flags ^ (GHO_F_IP4 | GHO_F_IP6)); + + vnet_get_inner_header (b, &gho); + ip4 = (ip4_header_t *) (vlib_buffer_get_current (b) + gho.l3_hdr_offset); ip6 = (ip6_header_t *) (vlib_buffer_get_current (b) + gho.l3_hdr_offset); th = (tcp_header_t *) (vlib_buffer_get_current (b) + gho.l4_hdr_offset); uh = (udp_header_t *) (vlib_buffer_get_current (b) + gho.l4_hdr_offset); + + if (gho.gho_flags & GHO_F_IP4) + { + vnet_calc_ip4_checksums (vm, b, ip4, th, uh); + } + else if (gho.gho_flags & GHO_F_IP6) + { + vnet_calc_ip6_checksums (vm, b, ip6, th, uh); + } + + vnet_get_outer_header (b, &gho); } else { + ASSERT (!(is_ip4 && is_ip6)); + ip4 = (ip4_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset); ip6 = (ip6_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset); th = (tcp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset); uh = (udp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset); - } - if (is_ip4) - { - if (b->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM) - ip4->checksum = ip4_header_checksum (ip4); - if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM) + if (is_ip4) { - th->checksum = 0; - th->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4); + vnet_calc_ip4_checksums (vm, b, ip4, th, uh); } - if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM) + if (is_ip6) { - uh->checksum = 0; - uh->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4); + vnet_calc_ip6_checksums (vm, b, ip6, th, uh); } } - if (is_ip6) - { - int bogus; - if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM) - { - th->checksum = 0; - th->checksum = - ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus); - } - if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM) - { - uh->checksum = 0; - uh->checksum = - ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus); - } - } - b->flags &= ~VNET_BUFFER_F_OFFLOAD_TCP_CKSUM; b->flags &= ~VNET_BUFFER_F_OFFLOAD_UDP_CKSUM; b->flags &= ~VNET_BUFFER_F_OFFLOAD_IP_CKSUM; -- cgit 1.2.3-korg