diff options
Diffstat (limited to 'src/vnet/gso')
| -rw-r--r-- | src/vnet/gso/gso.h | 119 | ||||
| -rw-r--r-- | src/vnet/gso/node.c | 162 |
2 files changed, 140 insertions, 141 deletions
diff --git a/src/vnet/gso/gso.h b/src/vnet/gso/gso.h index 883a4941ee2..dee5da5c70b 100644 --- a/src/vnet/gso/gso.h +++ b/src/vnet/gso/gso.h @@ -39,13 +39,13 @@ gso_init_bufs_from_template_base (vlib_buffer_t **bufs, vlib_buffer_t *b0, u32 flags, u16 n_bufs, u16 hdr_sz) { u32 i = n_bufs; - while (i >= 4) + while (i >= 6) { /* prefetches */ CLIB_PREFETCH (bufs[2], 2 * CLIB_CACHE_LINE_BYTES, LOAD); CLIB_PREFETCH (bufs[3], 2 * CLIB_CACHE_LINE_BYTES, LOAD); - vlib_prefetch_buffer_data (bufs[2], LOAD); - vlib_prefetch_buffer_data (bufs[3], LOAD); + vlib_prefetch_buffer_data (bufs[4], LOAD); + vlib_prefetch_buffer_data (bufs[5], LOAD); /* copying objects from cacheline 0 */ bufs[0]->current_data = 0; @@ -70,10 +70,26 @@ gso_init_bufs_from_template_base (vlib_buffer_t **bufs, vlib_buffer_t *b0, bufs[0]->total_length_not_including_first_buffer = 0; bufs[1]->total_length_not_including_first_buffer = 0; + clib_memcpy_fast (&bufs[0]->opaque2, &b0->opaque2, sizeof (b0->opaque2)); + clib_memcpy_fast (&bufs[1]->opaque2, &b0->opaque2, sizeof (b0->opaque2)); + /* copying data */ clib_memcpy_fast (bufs[0]->data, vlib_buffer_get_current (b0), hdr_sz); clib_memcpy_fast (bufs[1]->data, vlib_buffer_get_current (b0), hdr_sz); + /* header offset fixup */ + vnet_buffer (bufs[0])->l2_hdr_offset -= b0->current_data; + vnet_buffer (bufs[0])->l3_hdr_offset -= b0->current_data; + vnet_buffer (bufs[0])->l4_hdr_offset -= b0->current_data; + vnet_buffer2 (bufs[0])->outer_l3_hdr_offset -= b0->current_data; + vnet_buffer2 (bufs[0])->outer_l4_hdr_offset -= b0->current_data; + + vnet_buffer (bufs[1])->l2_hdr_offset -= b0->current_data; + vnet_buffer (bufs[1])->l3_hdr_offset -= b0->current_data; + vnet_buffer (bufs[1])->l4_hdr_offset -= b0->current_data; + vnet_buffer2 (bufs[1])->outer_l3_hdr_offset -= b0->current_data; + vnet_buffer2 (bufs[1])->outer_l4_hdr_offset -= b0->current_data; + bufs += 2; i -= 2; } @@ -92,10 +108,18 @@ gso_init_bufs_from_template_base (vlib_buffer_t **bufs, vlib_buffer_t *b0, /* copying objects from cacheline 1 */ bufs[0]->trace_handle = b0->trace_handle; bufs[0]->total_length_not_including_first_buffer = 0; + clib_memcpy_fast (&bufs[0]->opaque2, &b0->opaque2, sizeof (b0->opaque2)); /* copying data */ clib_memcpy_fast (bufs[0]->data, vlib_buffer_get_current (b0), hdr_sz); + /* header offset fixup */ + vnet_buffer (bufs[0])->l2_hdr_offset -= b0->current_data; + vnet_buffer (bufs[0])->l3_hdr_offset -= b0->current_data; + vnet_buffer (bufs[0])->l4_hdr_offset -= b0->current_data; + vnet_buffer2 (bufs[0])->outer_l3_hdr_offset -= b0->current_data; + vnet_buffer2 (bufs[0])->outer_l4_hdr_offset -= b0->current_data; + bufs++; i--; } @@ -103,28 +127,41 @@ gso_init_bufs_from_template_base (vlib_buffer_t **bufs, vlib_buffer_t *b0, static_always_inline void gso_fixup_segmented_buf (vlib_main_t *vm, vlib_buffer_t *b0, u32 next_tcp_seq, - int is_l2, int is_ip6, generic_header_offset_t *gho, - clib_ip_csum_t *c, u8 tcp_flags) + int is_l2, u8 oflags, u16 hdr_sz, u16 l4_hdr_sz, + clib_ip_csum_t *c, u8 tcp_flags, u8 is_prefetch, + vlib_buffer_t *b1) { - ip4_header_t *ip4 = - (ip4_header_t *) (vlib_buffer_get_current (b0) + gho->l3_hdr_offset + - gho->outer_hdr_sz); - ip6_header_t *ip6 = - (ip6_header_t *) (vlib_buffer_get_current (b0) + gho->l3_hdr_offset + - gho->outer_hdr_sz); - tcp_header_t *tcp = - (tcp_header_t *) (vlib_buffer_get_current (b0) + gho->l4_hdr_offset + - gho->outer_hdr_sz); + i16 l3_hdr_offset = vnet_buffer (b0)->l3_hdr_offset; + i16 l4_hdr_offset = vnet_buffer (b0)->l4_hdr_offset; + + ip4_header_t *ip4 = (ip4_header_t *) (b0->data + l3_hdr_offset); + ip6_header_t *ip6 = (ip6_header_t *) (b0->data + l3_hdr_offset); + tcp_header_t *tcp = (tcp_header_t *) (b0->data + l4_hdr_offset); tcp->flags = tcp_flags; tcp->seq_number = clib_host_to_net_u32 (next_tcp_seq); c->odd = 0; - if (is_ip6) + if (oflags & VNET_BUFFER_OFFLOAD_F_IP_CKSUM) + { + ip4->length = + clib_host_to_net_u16 (b0->current_length - hdr_sz + + (l4_hdr_offset - l3_hdr_offset) + l4_hdr_sz); + ip4->checksum = 0; + ip4->checksum = ip4_header_checksum (ip4); + vnet_buffer_offload_flags_clear (b0, (VNET_BUFFER_OFFLOAD_F_IP_CKSUM | + VNET_BUFFER_OFFLOAD_F_TCP_CKSUM)); + c->sum += clib_mem_unaligned (&ip4->src_address, u32); + c->sum += clib_mem_unaligned (&ip4->dst_address, u32); + c->sum += clib_host_to_net_u32 ( + (clib_net_to_host_u16 (ip4->length) - ip4_header_bytes (ip4)) + + (ip4->protocol << 16)); + } + else { - ip6->payload_length = clib_host_to_net_u16 ( - b0->current_length - gho->l4_hdr_offset - gho->outer_hdr_sz); + ip6->payload_length = + clib_host_to_net_u16 (b0->current_length - hdr_sz + l4_hdr_sz); vnet_buffer_offload_flags_clear (b0, VNET_BUFFER_OFFLOAD_F_TCP_CKSUM); ip6_psh_t psh = { 0 }; u32 *p = (u32 *) &psh; @@ -135,24 +172,15 @@ gso_fixup_segmented_buf (vlib_main_t *vm, vlib_buffer_t *b0, u32 next_tcp_seq, for (int i = 0; i < 10; i++) c->sum += p[i]; } - else - { - ip4->length = clib_host_to_net_u16 ( - b0->current_length - gho->l3_hdr_offset - gho->outer_hdr_sz); - if (gho->gho_flags & GHO_F_IP4) - ip4->checksum = ip4_header_checksum (ip4); - vnet_buffer_offload_flags_clear (b0, (VNET_BUFFER_OFFLOAD_F_IP_CKSUM | - VNET_BUFFER_OFFLOAD_F_TCP_CKSUM)); - c->sum += clib_mem_unaligned (&ip4->src_address, u32); - c->sum += clib_mem_unaligned (&ip4->dst_address, u32); - c->sum += clib_host_to_net_u32 ( - (clib_net_to_host_u16 (ip4->length) - ip4_header_bytes (ip4)) + - (ip4->protocol << 16)); - } - clib_ip_csum_chunk (c, (u8 *) tcp, gho->l4_hdr_sz); + + if (is_prefetch) + CLIB_PREFETCH (vlib_buffer_get_current (b1) + hdr_sz, + CLIB_CACHE_LINE_BYTES, LOAD); + + clib_ip_csum_chunk (c, (u8 *) tcp, l4_hdr_sz); tcp->checksum = clib_ip_csum_fold (c); - if (!is_l2 && ((gho->gho_flags & GHO_F_TUNNEL) == 0)) + if (!is_l2 && ((oflags & VNET_BUFFER_OFFLOAD_F_TNL_MASK) == 0)) { u32 adj_index0 = vnet_buffer (b0)->ip.adj_index[VLIB_TX]; @@ -169,16 +197,20 @@ gso_fixup_segmented_buf (vlib_main_t *vm, vlib_buffer_t *b0, u32 next_tcp_seq, static_always_inline u32 gso_segment_buffer_inline (vlib_main_t *vm, vnet_interface_per_thread_data_t *ptd, - vlib_buffer_t *b, generic_header_offset_t *gho, - int is_l2, int is_ip6) + vlib_buffer_t *b, int is_l2) { vlib_buffer_t **bufs = 0; u32 n_tx_bytes = 0; + + u8 oflags = vnet_buffer (b)->oflags; + i16 l4_hdr_offset = vnet_buffer (b)->l4_hdr_offset; u16 gso_size = vnet_buffer2 (b)->gso_size; + u16 l4_hdr_sz = vnet_buffer2 (b)->gso_l4_hdr_sz; + u8 tcp_flags = 0, tcp_flags_no_fin_psh = 0; u32 default_bflags = b->flags & ~(VNET_BUFFER_F_GSO | VLIB_BUFFER_NEXT_PRESENT); - u16 hdr_sz = gho->hdr_sz + gho->outer_hdr_sz; + u16 hdr_sz = (l4_hdr_offset - b->current_data) + l4_hdr_sz; u32 next_tcp_seq = 0, tcp_seq = 0; u32 data_size = vlib_buffer_length_in_chain (vm, b) - hdr_sz; u16 size = @@ -200,9 +232,8 @@ gso_segment_buffer_inline (vlib_main_t *vm, vec_validate (bufs, n_bufs - 1); vlib_get_buffers (vm, ptd->split_buffers, bufs, n_bufs); - tcp_header_t *tcp = - (tcp_header_t *) (vlib_buffer_get_current (b) + gho->l4_hdr_offset + - gho->outer_hdr_sz); + tcp_header_t *tcp = (tcp_header_t *) (b->data + l4_hdr_offset); + tcp_seq = next_tcp_seq = clib_net_to_host_u32 (tcp->seq_number); /* store original flags for last packet and reset FIN and PSH */ tcp_flags = tcp->flags; @@ -247,11 +278,11 @@ gso_segment_buffer_inline (vlib_main_t *vm, if (0 == dst_left && data_size) { vlib_prefetch_buffer_header (bufs[i + 1], LOAD); - vlib_prefetch_buffer_data (bufs[i + 1], LOAD); n_tx_bytes += bufs[i]->current_length; - gso_fixup_segmented_buf (vm, bufs[i], tcp_seq, is_l2, is_ip6, gho, - &c, tcp_flags_no_fin_psh); + gso_fixup_segmented_buf (vm, bufs[i], tcp_seq, is_l2, oflags, hdr_sz, + l4_hdr_sz, &c, tcp_flags_no_fin_psh, 1, + bufs[i + 1]); i++; dst_left = size; dst_ptr = vlib_buffer_get_current (bufs[i]) + hdr_sz; @@ -264,8 +295,8 @@ gso_segment_buffer_inline (vlib_main_t *vm, ASSERT ((i + 1) == n_alloc); n_tx_bytes += bufs[i]->current_length; - gso_fixup_segmented_buf (vm, bufs[i], tcp_seq, is_l2, is_ip6, gho, &c, - tcp_flags); + gso_fixup_segmented_buf (vm, bufs[i], tcp_seq, is_l2, oflags, hdr_sz, + l4_hdr_sz, &c, tcp_flags, 0, NULL); vec_free (bufs); return n_tx_bytes; diff --git a/src/vnet/gso/node.c b/src/vnet/gso/node.c index 910f1585e7f..c1d4459476e 100644 --- a/src/vnet/gso/node.c +++ b/src/vnet/gso/node.c @@ -80,113 +80,108 @@ format_gso_trace (u8 * s, va_list * args) return s; } -static_always_inline u16 -tso_segment_ipip_tunnel_fixup (vlib_main_t * vm, - vnet_interface_per_thread_data_t * ptd, - vlib_buffer_t * sb0, - generic_header_offset_t * gho) +static_always_inline void +tso_segment_ipip_tunnel_fixup (vlib_main_t *vm, + vnet_interface_per_thread_data_t *ptd, + vlib_buffer_t *sb0) { u16 n_tx_bufs = vec_len (ptd->split_buffers); - u16 i = 0, n_tx_bytes = 0; + u16 i = 0; while (i < n_tx_bufs) { vlib_buffer_t *b0 = vlib_get_buffer (vm, ptd->split_buffers[i]); + i16 outer_l3_hdr_offset = vnet_buffer2 (b0)->outer_l3_hdr_offset; + i16 l3_hdr_offset = vnet_buffer (b0)->l3_hdr_offset; - ip4_header_t *ip4 = - (ip4_header_t *) (vlib_buffer_get_current (b0) + - gho->outer_l3_hdr_offset); - ip6_header_t *ip6 = - (ip6_header_t *) (vlib_buffer_get_current (b0) + - gho->outer_l3_hdr_offset); + ip4_header_t *ip4 = (ip4_header_t *) (b0->data + outer_l3_hdr_offset); + ip6_header_t *ip6 = (ip6_header_t *) (b0->data + outer_l3_hdr_offset); - if (gho->gho_flags & GHO_F_OUTER_IP4) + if (vnet_buffer (b0)->oflags & VNET_BUFFER_OFFLOAD_F_OUTER_IP_CKSUM) { - ip4->length = - clib_host_to_net_u16 (b0->current_length - - gho->outer_l3_hdr_offset); + ip4->length = clib_host_to_net_u16 ( + b0->current_length - (outer_l3_hdr_offset - b0->current_data)); ip4->checksum = ip4_header_checksum (ip4); + vnet_buffer_offload_flags_clear ( + b0, VNET_BUFFER_OFFLOAD_F_OUTER_IP_CKSUM | + VNET_BUFFER_OFFLOAD_F_TNL_IPIP); } - else if (gho->gho_flags & GHO_F_OUTER_IP6) + else { - ip6->payload_length = - clib_host_to_net_u16 (b0->current_length - - gho->outer_l4_hdr_offset); + ip6->payload_length = clib_host_to_net_u16 ( + b0->current_length - (l3_hdr_offset - b0->current_data)); + vnet_buffer_offload_flags_clear (b0, VNET_BUFFER_OFFLOAD_F_TNL_IPIP); } - n_tx_bytes += gho->outer_hdr_sz; i++; } - return n_tx_bytes; } static_always_inline void -tso_segment_vxlan_tunnel_headers_fixup (vlib_main_t * vm, vlib_buffer_t * b, - generic_header_offset_t * gho) +tso_segment_vxlan_tunnel_headers_fixup (vlib_main_t *vm, vlib_buffer_t *b) { - u8 proto = 0; ip4_header_t *ip4 = 0; ip6_header_t *ip6 = 0; udp_header_t *udp = 0; + i16 outer_l3_hdr_offset = vnet_buffer2 (b)->outer_l3_hdr_offset; + i16 outer_l4_hdr_offset = vnet_buffer2 (b)->outer_l4_hdr_offset; - ip4 = - (ip4_header_t *) (vlib_buffer_get_current (b) + gho->outer_l3_hdr_offset); - ip6 = - (ip6_header_t *) (vlib_buffer_get_current (b) + gho->outer_l3_hdr_offset); - udp = - (udp_header_t *) (vlib_buffer_get_current (b) + gho->outer_l4_hdr_offset); + ip4 = (ip4_header_t *) (b->data + outer_l3_hdr_offset); + ip6 = (ip6_header_t *) (b->data + outer_l3_hdr_offset); + udp = (udp_header_t *) (b->data + outer_l4_hdr_offset); - if (gho->gho_flags & GHO_F_OUTER_IP4) + if (vnet_buffer (b)->oflags & VNET_BUFFER_OFFLOAD_F_OUTER_IP_CKSUM) { - proto = ip4->protocol; - ip4->length = - clib_host_to_net_u16 (b->current_length - gho->outer_l3_hdr_offset); + ip4->length = clib_host_to_net_u16 ( + b->current_length - (outer_l3_hdr_offset - b->current_data)); ip4->checksum = ip4_header_checksum (ip4); + if (vnet_buffer (b)->oflags & VNET_BUFFER_OFFLOAD_F_OUTER_UDP_CKSUM) + { + udp->length = clib_host_to_net_u16 ( + b->current_length - (outer_l4_hdr_offset - b->current_data)); + // udp checksum is 0, in udp tunnel + udp->checksum = 0; + } + vnet_buffer_offload_flags_clear ( + b, VNET_BUFFER_OFFLOAD_F_OUTER_IP_CKSUM | + VNET_BUFFER_OFFLOAD_F_OUTER_UDP_CKSUM | + VNET_BUFFER_OFFLOAD_F_TNL_VXLAN); } - else if (gho->gho_flags & GHO_F_OUTER_IP6) - { - proto = ip6->protocol; - ip6->payload_length = - clib_host_to_net_u16 (b->current_length - gho->outer_l4_hdr_offset); - } - if (proto == IP_PROTOCOL_UDP) + else { - int bogus; - udp->length = - clib_host_to_net_u16 (b->current_length - gho->outer_l4_hdr_offset); - udp->checksum = 0; - if (gho->gho_flags & GHO_F_OUTER_IP6) + ip6->payload_length = clib_host_to_net_u16 ( + b->current_length - (outer_l4_hdr_offset - b->current_data)); + + if (vnet_buffer (b)->oflags & VNET_BUFFER_OFFLOAD_F_OUTER_UDP_CKSUM) { + int bogus; + udp->length = ip6->payload_length; + // udp checksum is 0, in udp tunnel + udp->checksum = 0; udp->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus); + vnet_buffer_offload_flags_clear ( + b, VNET_BUFFER_OFFLOAD_F_OUTER_UDP_CKSUM | + VNET_BUFFER_OFFLOAD_F_TNL_VXLAN); } - else if (gho->gho_flags & GHO_F_OUTER_IP4) - { - udp->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4); - } - /* FIXME: it should be OUTER_UDP_CKSUM */ - vnet_buffer_offload_flags_clear (b, VNET_BUFFER_OFFLOAD_F_UDP_CKSUM); } } -static_always_inline u16 -tso_segment_vxlan_tunnel_fixup (vlib_main_t * vm, - vnet_interface_per_thread_data_t * ptd, - vlib_buffer_t * sb0, - generic_header_offset_t * gho) +static_always_inline void +tso_segment_vxlan_tunnel_fixup (vlib_main_t *vm, + vnet_interface_per_thread_data_t *ptd, + vlib_buffer_t *sb0) { u16 n_tx_bufs = vec_len (ptd->split_buffers); - u16 i = 0, n_tx_bytes = 0; + u16 i = 0; while (i < n_tx_bufs) { vlib_buffer_t *b0 = vlib_get_buffer (vm, ptd->split_buffers[i]); - tso_segment_vxlan_tunnel_headers_fixup (vm, b0, gho); - n_tx_bytes += gho->outer_hdr_sz; + tso_segment_vxlan_tunnel_headers_fixup (vm, b0); i++; } - return n_tx_bytes; } static_always_inline u16 @@ -682,32 +677,10 @@ vnet_gso_node_inline (vlib_main_t * vm, to_next -= 1; n_left_to_next += 1; /* undo the counting. */ - generic_header_offset_t gho = { 0 }; u32 n_tx_bytes = 0; - u32 inner_is_ip6 = is_ip6; - - vnet_generic_header_offset_parser (b[0], &gho, is_l2, - is_ip4, is_ip6); - - if (PREDICT_FALSE (gho.gho_flags & GHO_F_TUNNEL)) - { - if (PREDICT_FALSE - (gho.gho_flags & (GHO_F_GRE_TUNNEL | - GHO_F_GENEVE_TUNNEL))) - { - /* not supported yet */ - drop_one_buffer_and_count (vm, vnm, node, from - 1, - hi->sw_if_index, - GSO_ERROR_UNHANDLED_TYPE); - b += 1; - continue; - } - inner_is_ip6 = (gho.gho_flags & GHO_F_IP6) != 0; - } - - n_tx_bytes = gso_segment_buffer_inline (vm, ptd, b[0], &gho, - is_l2, inner_is_ip6); + n_tx_bytes = + gso_segment_buffer_inline (vm, ptd, b[0], is_l2); if (PREDICT_FALSE (n_tx_bytes == 0)) { @@ -718,19 +691,15 @@ vnet_gso_node_inline (vlib_main_t * vm, continue; } - - if (PREDICT_FALSE (gho.gho_flags & GHO_F_VXLAN_TUNNEL)) + if (PREDICT_FALSE (vnet_buffer (b[0])->oflags & + VNET_BUFFER_OFFLOAD_F_TNL_VXLAN)) { - n_tx_bytes += - tso_segment_vxlan_tunnel_fixup (vm, ptd, b[0], &gho); + tso_segment_vxlan_tunnel_fixup (vm, ptd, b[0]); } - else - if (PREDICT_FALSE - (gho.gho_flags & (GHO_F_IPIP_TUNNEL | - GHO_F_IPIP6_TUNNEL))) + else if (PREDICT_FALSE (vnet_buffer (b[0])->oflags & + VNET_BUFFER_OFFLOAD_F_TNL_IPIP)) { - n_tx_bytes += - tso_segment_ipip_tunnel_fixup (vm, ptd, b[0], &gho); + tso_segment_ipip_tunnel_fixup (vm, ptd, b[0]); } u16 n_tx_bufs = vec_len (ptd->split_buffers); @@ -744,7 +713,6 @@ vnet_gso_node_inline (vlib_main_t * vm, { sbi0 = to_next[0] = from_seg[0]; sb0 = vlib_get_buffer (vm, sbi0); - vnet_buffer_offload_flags_clear (sb0, 0x7F); ASSERT (sb0->current_length > 0); to_next += 1; from_seg += 1; |