diff options
Diffstat (limited to 'src/vnet/interface_output.c')
| -rw-r--r-- | src/vnet/interface_output.c | 95 |
1 files changed, 90 insertions, 5 deletions
diff --git a/src/vnet/interface_output.c b/src/vnet/interface_output.c index cdf18738193..c95f08b1a1e 100644 --- a/src/vnet/interface_output.c +++ b/src/vnet/interface_output.c @@ -38,6 +38,10 @@ */ #include <vnet/vnet.h> +#include <vnet/ip/icmp46_packet.h> +#include <vnet/ip/ip4.h> +#include <vnet/ip/ip6.h> +#include <vnet/udp/udp_packet.h> #include <vnet/feature/feature.h> typedef struct @@ -153,14 +157,58 @@ vnet_interface_output_trace (vlib_main_t * vm, } } -uword -vnet_interface_output_node (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) +static_always_inline void +calc_checksums (vlib_main_t * vm, vlib_buffer_t * b) +{ + ip4_header_t *ip4; + ip6_header_t *ip6; + tcp_header_t *th; + udp_header_t *uh; + + int is_ip4 = (b->flags & VNET_BUFFER_F_IS_IP4) != 0; + int is_ip6 = (b->flags & VNET_BUFFER_F_IS_IP6) != 0; + + 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) + { + ip4 = (ip4_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset); + 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 = ip4_tcp_udp_compute_checksum (vm, b, ip4); + if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM) + uh->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4); + } + if (is_ip6) + { + int bogus; + ASSERT (b->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM); + if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM) + th->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus); + if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM) + 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; +} + +static_always_inline uword +vnet_interface_output_node_inline (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame, vnet_main_t * vnm, + vnet_hw_interface_t * hi, + int do_tx_offloads) { - vnet_main_t *vnm = vnet_get_main (); vnet_interface_output_runtime_t *rt = (void *) node->runtime_data; vnet_sw_interface_t *si; - vnet_hw_interface_t *hi; u32 n_left_to_tx, *from, *from_end, *to_tx; u32 n_bytes, n_buffers, n_packets; u32 n_bytes_b0, n_bytes_b1, n_bytes_b2, n_bytes_b3; @@ -234,6 +282,7 @@ vnet_interface_output_node (vlib_main_t * vm, u32 bi0, bi1, bi2, bi3; vlib_buffer_t *b0, *b1, *b2, *b3; u32 tx_swif0, tx_swif1, tx_swif2, tx_swif3; + u32 or_flags; /* Prefetch next iteration. */ vlib_prefetch_buffer_with_index (vm, from[4], LOAD); @@ -324,6 +373,22 @@ vnet_interface_output_node (vlib_main_t * vm, thread_index, tx_swif3, 1, n_bytes_b3); } + + or_flags = b0->flags | b1->flags | b2->flags | b3->flags; + + if (do_tx_offloads) + { + if (or_flags & + (VNET_BUFFER_F_OFFLOAD_TCP_CKSUM | + VNET_BUFFER_F_OFFLOAD_UDP_CKSUM | + VNET_BUFFER_F_OFFLOAD_IP_CKSUM)) + { + calc_checksums (vm, b0); + calc_checksums (vm, b1); + calc_checksums (vm, b2); + calc_checksums (vm, b3); + } + } } while (from + 1 <= from_end && n_left_to_tx >= 1) @@ -363,6 +428,9 @@ vnet_interface_output_node (vlib_main_t * vm, thread_index, tx_swif0, 1, n_bytes_b0); } + + if (do_tx_offloads) + calc_checksums (vm, b0); } vlib_put_next_frame (vm, node, next_index, n_left_to_tx); @@ -376,6 +444,23 @@ vnet_interface_output_node (vlib_main_t * vm, return n_buffers; } +static_always_inline uword +vnet_interface_output_node (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + vnet_main_t *vnm = vnet_get_main (); + vnet_hw_interface_t *hi; + vnet_interface_output_runtime_t *rt = (void *) node->runtime_data; + hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index); + + if (hi->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD) + return vnet_interface_output_node_inline (vm, node, frame, vnm, hi, + /* do_tx_offloads */ 0); + else + return vnet_interface_output_node_inline (vm, node, frame, vnm, hi, + /* do_tx_offloads */ 1); +} + VLIB_NODE_FUNCTION_MULTIARCH_CLONE (vnet_interface_output_node); CLIB_MULTIARCH_SELECT_FN (vnet_interface_output_node); |