diff options
Diffstat (limited to 'src/vnet/pg/input.c')
| -rw-r--r-- | src/vnet/pg/input.c | 73 |
1 files changed, 71 insertions, 2 deletions
diff --git a/src/vnet/pg/input.c b/src/vnet/pg/input.c index 2d850e939b0..151624fe00f 100644 --- a/src/vnet/pg/input.c +++ b/src/vnet/pg/input.c @@ -50,6 +50,9 @@ #include <vnet/vnet.h> #include <vnet/ethernet/ethernet.h> #include <vnet/feature/feature.h> +#include <vnet/ip/ip4_packet.h> +#include <vnet/ip/ip6_packet.h> +#include <vnet/udp/udp_packet.h> #include <vnet/devices/devices.h> static int @@ -1523,6 +1526,70 @@ pg_input_trace (pg_main_t * pg, } } +static_always_inline void +fill_gso_buffer_flags (vlib_main_t * vm, u32 * buffers, u32 n_buffers, + u32 packet_data_size) +{ + + for (int i = 0; i < n_buffers; i++) + { + vlib_buffer_t *b0 = vlib_get_buffer (vm, buffers[i]); + u8 l4_proto = 0; + u8 l4_hdr_sz = 0; + + ethernet_header_t *eh = (ethernet_header_t *) b0->data; + u16 ethertype = clib_net_to_host_u16 (eh->type); + u16 l2hdr_sz = sizeof (ethernet_header_t); + + vnet_buffer (b0)->l2_hdr_offset = 0; + vnet_buffer (b0)->l3_hdr_offset = l2hdr_sz; + if (PREDICT_TRUE (ethertype == ETHERNET_TYPE_IP4)) + { + ip4_header_t *ip4 = (ip4_header_t *) (b0->data + l2hdr_sz); + vnet_buffer (b0)->l4_hdr_offset = l2hdr_sz + ip4_header_bytes (ip4); + l4_proto = ip4->protocol; + b0->flags |= + (VNET_BUFFER_F_IS_IP4 | VNET_BUFFER_F_L2_HDR_OFFSET_VALID + | VNET_BUFFER_F_L3_HDR_OFFSET_VALID | + VNET_BUFFER_F_L4_HDR_OFFSET_VALID); + b0->flags |= VNET_BUFFER_F_OFFLOAD_IP_CKSUM; + } + else if (PREDICT_TRUE (ethertype == ETHERNET_TYPE_IP6)) + { + ip6_header_t *ip6 = (ip6_header_t *) (b0->data + l2hdr_sz); + /* FIXME IPv6 EH traversal */ + vnet_buffer (b0)->l4_hdr_offset = l2hdr_sz + sizeof (ip6_header_t); + l4_proto = ip6->protocol; + b0->flags |= + (VNET_BUFFER_F_IS_IP6 | VNET_BUFFER_F_L2_HDR_OFFSET_VALID + | VNET_BUFFER_F_L3_HDR_OFFSET_VALID | + VNET_BUFFER_F_L4_HDR_OFFSET_VALID); + b0->flags |= VNET_BUFFER_F_OFFLOAD_IP_CKSUM; + } + if (l4_proto == IP_PROTOCOL_TCP) + { + b0->flags |= VNET_BUFFER_F_OFFLOAD_TCP_CKSUM; + tcp_header_t *tcp = (tcp_header_t *) (b0->data + + vnet_buffer + (b0)->l4_hdr_offset); + l4_hdr_sz = tcp_header_bytes (tcp); + tcp->checksum = 0; + vnet_buffer2 (b0)->gso_l4_hdr_sz = l4_hdr_sz; + vnet_buffer2 (b0)->gso_size = packet_data_size; + b0->flags |= VNET_BUFFER_F_GSO; + } + else if (l4_proto == IP_PROTOCOL_UDP) + { + b0->flags |= VNET_BUFFER_F_OFFLOAD_UDP_CKSUM; + udp_header_t *udp = (udp_header_t *) (b0->data + + vnet_buffer + (b0)->l4_hdr_offset); + vnet_buffer2 (b0)->gso_l4_hdr_sz = sizeof (*udp); + udp->checksum = 0; + } + } +} + static uword pg_generate_packets (vlib_node_runtime_t * node, pg_main_t * pg, @@ -1538,6 +1605,7 @@ pg_generate_packets (vlib_node_runtime_t * node, u8 feature_arc_index = fm->device_input_feature_arc_index; cm = &fm->feature_config_mains[feature_arc_index]; u32 current_config_index = ~(u32) 0; + pg_interface_t *pi = pool_elt_at_index (pg->interfaces, s->pg_if_index); int i; bi0 = s->buffer_indices; @@ -1564,14 +1632,12 @@ pg_generate_packets (vlib_node_runtime_t * node, vlib_next_frame_t *nf; vlib_frame_t *f; ethernet_input_frame_t *ef; - pg_interface_t *pi; vlib_get_new_next_frame (vm, node, next_index, to_next, n_left); nf = vlib_node_runtime_get_next_frame (vm, node, next_index); f = vlib_get_frame (vm, nf->frame); f->flags = ETH_INPUT_FRAME_F_SINGLE_SW_IF_IDX; ef = vlib_frame_scalar_args (f); - pi = pool_elt_at_index (pg->interfaces, s->pg_if_index); ef->sw_if_index = pi->sw_if_index; ef->hw_if_index = pi->hw_if_index; vlib_frame_no_append (f); @@ -1615,6 +1681,9 @@ pg_generate_packets (vlib_node_runtime_t * node, vnet_buffer (b)->feature_arc_index = feature_arc_index; } + if (pi->gso_enabled) + fill_gso_buffer_flags (vm, to_next, n_this_frame, pi->gso_size); + n_trace = vlib_get_trace_count (vm, node); if (n_trace > 0) { |