diff options
Diffstat (limited to 'src/vnet/gso')
-rw-r--r-- | src/vnet/gso/node.c | 225 |
1 files changed, 115 insertions, 110 deletions
diff --git a/src/vnet/gso/node.c b/src/vnet/gso/node.c index 548189ee04c..d7248c90147 100644 --- a/src/vnet/gso/node.c +++ b/src/vnet/gso/node.c @@ -43,6 +43,10 @@ format_gso_trace (u8 * s, va_list * args) s = format (s, "gso_sz %d gso_l4_hdr_sz %d", t->gso_size, t->gso_l4_hdr_sz); } + else + { + s = format (s, "non-gso buffer"); + } return s; } @@ -238,6 +242,8 @@ tso_segment_buffer (vlib_main_t * vm, vnet_interface_per_thread_data_t * ptd, if (0 == dst_left && total_src_left) { n_tx_bytes += cdb0->current_length; + tso_fixup_segmented_buf (cdb0, tcp_flags_no_fin_psh, is_ip6, + gho); ASSERT (dbi < vec_len (ptd->split_buffers)); cdb0 = vlib_get_buffer (vm, ptd->split_buffers[dbi++]); tso_init_buf_from_template (vm, cdb0, b0, l234_sz, @@ -301,108 +307,109 @@ vnet_gso_node_inline (vlib_main_t * vm, vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - while (from + 8 <= from_end && n_left_to_next >= 4) - { - u32 bi0, bi1, bi2, bi3; - u32 next0, next1, next2, next3; - u32 swif0, swif1, swif2, swif3; - gso_trace_t *t0, *t1, *t2, *t3; - vnet_hw_interface_t *hi0, *hi1, *hi2, *hi3; - - /* Prefetch next iteration. */ - vlib_prefetch_buffer_header (b[4], LOAD); - vlib_prefetch_buffer_header (b[5], LOAD); - vlib_prefetch_buffer_header (b[6], LOAD); - vlib_prefetch_buffer_header (b[7], LOAD); - - bi0 = from[0]; - bi1 = from[1]; - bi2 = from[2]; - bi3 = from[3]; - to_next[0] = bi0; - to_next[1] = bi1; - to_next[2] = bi2; - to_next[3] = bi3; - - swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX]; - swif1 = vnet_buffer (b[1])->sw_if_index[VLIB_TX]; - swif2 = vnet_buffer (b[2])->sw_if_index[VLIB_TX]; - swif3 = vnet_buffer (b[3])->sw_if_index[VLIB_TX]; - - if (PREDICT_FALSE (hi->sw_if_index != swif0)) - { - hi0 = vnet_get_sup_hw_interface (vnm, swif0); - if ((hi0->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) == 0 && - (b[0]->flags & VNET_BUFFER_F_GSO)) - break; - } - if (PREDICT_FALSE (hi->sw_if_index != swif1)) - { - hi1 = vnet_get_sup_hw_interface (vnm, swif0); - if (!(hi1->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) && - (b[1]->flags & VNET_BUFFER_F_GSO)) - break; - } - if (PREDICT_FALSE (hi->sw_if_index != swif2)) - { - hi2 = vnet_get_sup_hw_interface (vnm, swif0); - if ((hi2->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) == 0 && - (b[2]->flags & VNET_BUFFER_F_GSO)) - break; - } - if (PREDICT_FALSE (hi->sw_if_index != swif3)) - { - hi3 = vnet_get_sup_hw_interface (vnm, swif0); - if (!(hi3->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) && - (b[3]->flags & VNET_BUFFER_F_GSO)) - break; - } - - if (b[0]->flags & VLIB_BUFFER_IS_TRACED) - { - t0 = vlib_add_trace (vm, node, b[0], sizeof (t0[0])); - t0->flags = b[0]->flags & VNET_BUFFER_F_GSO; - t0->gso_size = vnet_buffer2 (b[0])->gso_size; - t0->gso_l4_hdr_sz = vnet_buffer2 (b[0])->gso_l4_hdr_sz; - } - if (b[1]->flags & VLIB_BUFFER_IS_TRACED) - { - t1 = vlib_add_trace (vm, node, b[1], sizeof (t1[0])); - t1->flags = b[1]->flags & VNET_BUFFER_F_GSO; - t1->gso_size = vnet_buffer2 (b[1])->gso_size; - t1->gso_l4_hdr_sz = vnet_buffer2 (b[1])->gso_l4_hdr_sz; - } - if (b[2]->flags & VLIB_BUFFER_IS_TRACED) - { - t2 = vlib_add_trace (vm, node, b[2], sizeof (t2[0])); - t2->flags = b[2]->flags & VNET_BUFFER_F_GSO; - t2->gso_size = vnet_buffer2 (b[2])->gso_size; - t2->gso_l4_hdr_sz = vnet_buffer2 (b[2])->gso_l4_hdr_sz; - } - if (b[3]->flags & VLIB_BUFFER_IS_TRACED) - { - t3 = vlib_add_trace (vm, node, b[3], sizeof (t3[0])); - t3->flags = b[3]->flags & VNET_BUFFER_F_GSO; - t3->gso_size = vnet_buffer2 (b[3])->gso_size; - t3->gso_l4_hdr_sz = vnet_buffer2 (b[3])->gso_l4_hdr_sz; - } - - from += 4; - to_next += 4; - n_left_to_next -= 4; - n_left_from -= 4; - - next0 = next1 = 0; - next2 = next3 = 0; - vnet_feature_next (&next0, b[0]); - vnet_feature_next (&next1, b[1]); - vnet_feature_next (&next2, b[2]); - vnet_feature_next (&next3, b[3]); - vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next, - n_left_to_next, bi0, bi1, bi2, bi3, - next0, next1, next2, next3); - b += 4; - } + if (!do_segmentation) + while (from + 8 <= from_end && n_left_to_next >= 4) + { + u32 bi0, bi1, bi2, bi3; + u32 next0, next1, next2, next3; + u32 swif0, swif1, swif2, swif3; + gso_trace_t *t0, *t1, *t2, *t3; + vnet_hw_interface_t *hi0, *hi1, *hi2, *hi3; + + /* Prefetch next iteration. */ + vlib_prefetch_buffer_header (b[4], LOAD); + vlib_prefetch_buffer_header (b[5], LOAD); + vlib_prefetch_buffer_header (b[6], LOAD); + vlib_prefetch_buffer_header (b[7], LOAD); + + bi0 = from[0]; + bi1 = from[1]; + bi2 = from[2]; + bi3 = from[3]; + to_next[0] = bi0; + to_next[1] = bi1; + to_next[2] = bi2; + to_next[3] = bi3; + + swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX]; + swif1 = vnet_buffer (b[1])->sw_if_index[VLIB_TX]; + swif2 = vnet_buffer (b[2])->sw_if_index[VLIB_TX]; + swif3 = vnet_buffer (b[3])->sw_if_index[VLIB_TX]; + + if (PREDICT_FALSE (hi->sw_if_index != swif0)) + { + hi0 = vnet_get_sup_hw_interface (vnm, swif0); + if ((hi0->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) == 0 && + (b[0]->flags & VNET_BUFFER_F_GSO)) + break; + } + if (PREDICT_FALSE (hi->sw_if_index != swif1)) + { + hi1 = vnet_get_sup_hw_interface (vnm, swif0); + if (!(hi1->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) && + (b[1]->flags & VNET_BUFFER_F_GSO)) + break; + } + if (PREDICT_FALSE (hi->sw_if_index != swif2)) + { + hi2 = vnet_get_sup_hw_interface (vnm, swif0); + if ((hi2->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) == 0 && + (b[2]->flags & VNET_BUFFER_F_GSO)) + break; + } + if (PREDICT_FALSE (hi->sw_if_index != swif3)) + { + hi3 = vnet_get_sup_hw_interface (vnm, swif0); + if (!(hi3->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) && + (b[3]->flags & VNET_BUFFER_F_GSO)) + break; + } + + if (b[0]->flags & VLIB_BUFFER_IS_TRACED) + { + t0 = vlib_add_trace (vm, node, b[0], sizeof (t0[0])); + t0->flags = b[0]->flags & VNET_BUFFER_F_GSO; + t0->gso_size = vnet_buffer2 (b[0])->gso_size; + t0->gso_l4_hdr_sz = vnet_buffer2 (b[0])->gso_l4_hdr_sz; + } + if (b[1]->flags & VLIB_BUFFER_IS_TRACED) + { + t1 = vlib_add_trace (vm, node, b[1], sizeof (t1[0])); + t1->flags = b[1]->flags & VNET_BUFFER_F_GSO; + t1->gso_size = vnet_buffer2 (b[1])->gso_size; + t1->gso_l4_hdr_sz = vnet_buffer2 (b[1])->gso_l4_hdr_sz; + } + if (b[2]->flags & VLIB_BUFFER_IS_TRACED) + { + t2 = vlib_add_trace (vm, node, b[2], sizeof (t2[0])); + t2->flags = b[2]->flags & VNET_BUFFER_F_GSO; + t2->gso_size = vnet_buffer2 (b[2])->gso_size; + t2->gso_l4_hdr_sz = vnet_buffer2 (b[2])->gso_l4_hdr_sz; + } + if (b[3]->flags & VLIB_BUFFER_IS_TRACED) + { + t3 = vlib_add_trace (vm, node, b[3], sizeof (t3[0])); + t3->flags = b[3]->flags & VNET_BUFFER_F_GSO; + t3->gso_size = vnet_buffer2 (b[3])->gso_size; + t3->gso_l4_hdr_sz = vnet_buffer2 (b[3])->gso_l4_hdr_sz; + } + + from += 4; + to_next += 4; + n_left_to_next -= 4; + n_left_from -= 4; + + next0 = next1 = 0; + next2 = next3 = 0; + vnet_feature_next (&next0, b[0]); + vnet_feature_next (&next1, b[1]); + vnet_feature_next (&next2, b[2]); + vnet_feature_next (&next3, b[3]); + vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next, + n_left_to_next, bi0, bi1, bi2, + bi3, next0, next1, next2, next3); + b += 4; + } while (from + 1 <= from_end && n_left_to_next > 0) { @@ -410,6 +417,7 @@ vnet_gso_node_inline (vlib_main_t * vm, gso_trace_t *t0; vnet_hw_interface_t *hi0; u32 next0 = 0; + u32 do_segmentation0 = 0; swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX]; if (PREDICT_FALSE (hi->sw_if_index != swif0)) @@ -417,8 +425,10 @@ vnet_gso_node_inline (vlib_main_t * vm, hi0 = vnet_get_sup_hw_interface (vnm, swif0); if ((hi0->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) == 0 && (b[0]->flags & VNET_BUFFER_F_GSO)) - do_segmentation = 1; + do_segmentation0 = 1; } + else + do_segmentation0 = do_segmentation; /* speculatively enqueue b0 to the current next frame */ to_next[0] = bi0 = from[0]; @@ -435,7 +445,7 @@ vnet_gso_node_inline (vlib_main_t * vm, t0->gso_l4_hdr_sz = vnet_buffer2 (b[0])->gso_l4_hdr_sz; } - if (do_segmentation) + if (do_segmentation0) { if (PREDICT_FALSE (b[0]->flags & VNET_BUFFER_F_GSO)) { @@ -543,12 +553,7 @@ vnet_gso_inline (vlib_main_t * vm, vlib_buffer_t *b = vlib_get_buffer (vm, from[0]); hi = vnet_get_sup_hw_interface (vnm, vnet_buffer (b)->sw_if_index[VLIB_TX]); - /* - * The 3-headed "if" is here because we want to err on the side - * of not impacting the non-GSO performance - so for the more - * common case of no GSO interfaces we want to prevent the - * segmentation codepath from being there altogether. - */ + if (hi->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) return vnet_gso_node_inline (vm, node, frame, vnm, hi, is_ip6, /* do_segmentation */ 0); 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