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;
}
tso_alloc_tx_bufs (vlib_main_t * vm,
vnet_interface_per_thread_data_t * ptd,
vlib_buffer_t * b0, u32 n_bytes_b0, u16 l234_sz,
- u16 gso_size)
+ u16 gso_size, gso_header_offset_t * gho)
{
u16 size =
- clib_min (gso_size, vlib_buffer_get_default_data_size (vm) - l234_sz);
+ clib_min (gso_size, vlib_buffer_get_default_data_size (vm) - l234_sz
+ - gho->l2_hdr_offset);
/* rounded-up division */
u16 n_bufs = (n_bytes_b0 - l234_sz + (size - 1)) / size;
tso_init_buf_from_template (vlib_main_t * vm, vlib_buffer_t * nb0,
vlib_buffer_t * b0, u16 template_data_sz,
u16 gso_size, u8 ** p_dst_ptr, u16 * p_dst_left,
- u32 next_tcp_seq, u32 flags)
+ u32 next_tcp_seq, u32 flags,
+ gso_header_offset_t * gho)
{
tso_init_buf_from_template_base (nb0, b0, flags, template_data_sz);
*p_dst_ptr = vlib_buffer_get_current (nb0) + template_data_sz;
tcp_header_t *tcp =
- (tcp_header_t *) (nb0->data + vnet_buffer (nb0)->l4_hdr_offset);
+ (tcp_header_t *) (vlib_buffer_get_current (nb0) + gho->l4_hdr_offset);
tcp->seq_number = clib_host_to_net_u32 (next_tcp_seq);
}
static_always_inline void
-tso_fixup_segmented_buf (vlib_buffer_t * b0, u8 tcp_flags, int is_ip6)
+tso_fixup_segmented_buf (vlib_buffer_t * b0, u8 tcp_flags, int is_ip6,
+ gso_header_offset_t * gho)
{
- u16 l3_hdr_offset = vnet_buffer (b0)->l3_hdr_offset;
- u16 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);
+ ip4_header_t *ip4 =
+ (ip4_header_t *) (vlib_buffer_get_current (b0) + gho->l3_hdr_offset);
+ ip6_header_t *ip6 =
+ (ip6_header_t *) (vlib_buffer_get_current (b0) + gho->l3_hdr_offset);
+ tcp_header_t *tcp =
+ (tcp_header_t *) (vlib_buffer_get_current (b0) + gho->l4_hdr_offset);
tcp->flags = tcp_flags;
if (is_ip6)
ip6->payload_length =
clib_host_to_net_u16 (b0->current_length -
- (l4_hdr_offset - b0->current_data));
+ (gho->l4_hdr_offset - gho->l2_hdr_offset));
else
ip4->length =
clib_host_to_net_u16 (b0->current_length -
- (l3_hdr_offset - b0->current_data));
+ (gho->l3_hdr_offset - gho->l2_hdr_offset));
}
/**
static_always_inline u32
tso_segment_buffer (vlib_main_t * vm, vnet_interface_per_thread_data_t * ptd,
- u32 sbi0, vlib_buffer_t * sb0, u32 n_bytes_b0, int is_ip6)
+ u32 sbi0, vlib_buffer_t * sb0, gso_header_offset_t * gho,
+ u32 n_bytes_b0, int is_ip6)
{
u32 n_tx_bytes = 0;
- ASSERT (sb0->flags & VNET_BUFFER_F_L2_HDR_OFFSET_VALID);
- ASSERT (sb0->flags & VNET_BUFFER_F_L3_HDR_OFFSET_VALID);
- ASSERT (sb0->flags & VNET_BUFFER_F_L4_HDR_OFFSET_VALID);
u16 gso_size = vnet_buffer2 (sb0)->gso_size;
- int l4_hdr_sz = vnet_buffer2 (sb0)->gso_l4_hdr_sz;
+ int l4_hdr_sz = gho->l4_hdr_sz;
u8 save_tcp_flags = 0;
u8 tcp_flags_no_fin_psh = 0;
u32 next_tcp_seq = 0;
tcp_header_t *tcp =
- (tcp_header_t *) (sb0->data + vnet_buffer (sb0)->l4_hdr_offset);
+ (tcp_header_t *) (vlib_buffer_get_current (sb0) + gho->l4_hdr_offset);
next_tcp_seq = clib_net_to_host_u32 (tcp->seq_number);
/* store original flags for last packet and reset FIN and PSH */
save_tcp_flags = tcp->flags;
u32 default_bflags =
sb0->flags & ~(VNET_BUFFER_F_GSO | VLIB_BUFFER_NEXT_PRESENT);
- u16 l234_sz = vnet_buffer (sb0)->l4_hdr_offset + l4_hdr_sz
- - sb0->current_data;
+ u16 l234_sz = gho->l4_hdr_offset + l4_hdr_sz - gho->l2_hdr_offset;
int first_data_size = clib_min (gso_size, sb0->current_length - l234_sz);
next_tcp_seq += first_data_size;
if (PREDICT_FALSE
- (!tso_alloc_tx_bufs (vm, ptd, sb0, n_bytes_b0, l234_sz, gso_size)))
+ (!tso_alloc_tx_bufs (vm, ptd, sb0, n_bytes_b0, l234_sz, gso_size, gho)))
return 0;
vlib_buffer_t *b0 = vlib_get_buffer (vm, ptd->split_buffers[0]);
src_ptr = vlib_buffer_get_current (sb0) + l234_sz + first_data_size;
src_left = sb0->current_length - l234_sz - first_data_size;
- tso_fixup_segmented_buf (b0, tcp_flags_no_fin_psh, is_ip6);
+ tso_fixup_segmented_buf (b0, tcp_flags_no_fin_psh, is_ip6, gho);
/* grab a second buffer and prepare the loop */
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, gso_size, &dst_ptr,
- &dst_left, next_tcp_seq, default_bflags);
+ &dst_left, next_tcp_seq, default_bflags,
+ gho);
/* an arbitrary large number to catch the runaway loops */
int nloops = 2000;
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,
gso_size, &dst_ptr, &dst_left,
- next_tcp_seq, default_bflags);
+ next_tcp_seq, default_bflags, gho);
}
}
- tso_fixup_segmented_buf (cdb0, save_tcp_flags, is_ip6);
+ tso_fixup_segmented_buf (cdb0, save_tcp_flags, is_ip6, gho);
n_tx_bytes += cdb0->current_length;
}
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, swif1);
+ 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, swif2);
+ 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, swif3);
+ 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)
{
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))
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];
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))
{
to_next -= 1;
n_left_to_next += 1;
/* undo the counting. */
+ gso_header_offset_t gho;
u32 n_bytes_b0 = vlib_buffer_length_in_chain (vm, b[0]);
u32 n_tx_bytes = 0;
+ gho = vnet_gso_header_offset_parser (b[0], is_ip6);
n_tx_bytes =
- tso_segment_buffer (vm, ptd, bi0, b[0], n_bytes_b0,
+ tso_segment_buffer (vm, ptd, bi0, b[0], &gho, n_bytes_b0,
is_ip6);
if (PREDICT_FALSE (n_tx_bytes == 0))
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);
Code Review / vpp.git / blobdiff