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Diffstat (limited to 'src/vnet/ip/ip4_forward.c')
-rw-r--r--src/vnet/ip/ip4_forward.c44
1 files changed, 37 insertions, 7 deletions
diff --git a/src/vnet/ip/ip4_forward.c b/src/vnet/ip/ip4_forward.c
index b3ae29a2790..ec4eda4e96a 100644
--- a/src/vnet/ip/ip4_forward.c
+++ b/src/vnet/ip/ip4_forward.c
@@ -2186,10 +2186,11 @@ ip4_ttl_and_checksum_check (vlib_buffer_t * b, ip4_header_t * ip, u16 * next,
always_inline uword
-ip4_rewrite_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame,
- int do_counters, int is_midchain, int is_mcast)
+ip4_rewrite_inline_with_gso (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame,
+ int do_counters, int is_midchain, int is_mcast,
+ int do_gso)
{
ip_lookup_main_t *lm = &ip4_main.lookup_main;
u32 *from = vlib_frame_vector_args (frame);
@@ -2267,12 +2268,20 @@ ip4_rewrite_inline (vlib_main_t * vm,
CLIB_PREFETCH (p, CLIB_CACHE_LINE_BYTES, LOAD);
/* Check MTU of outgoing interface. */
- ip4_mtu_check (b[0], clib_net_to_host_u16 (ip0->length),
+ u16 ip0_len = clib_net_to_host_u16 (ip0->length);
+ u16 ip1_len = clib_net_to_host_u16 (ip1->length);
+
+ if (do_gso && (b[0]->flags & VNET_BUFFER_F_GSO))
+ ip0_len = gso_mtu_sz (b[0]);
+ if (do_gso && (b[1]->flags & VNET_BUFFER_F_GSO))
+ ip1_len = gso_mtu_sz (b[1]);
+
+ ip4_mtu_check (b[0], ip0_len,
adj0[0].rewrite_header.max_l3_packet_bytes,
ip0->flags_and_fragment_offset &
clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT),
next + 0, &error0);
- ip4_mtu_check (b[1], clib_net_to_host_u16 (ip1->length),
+ ip4_mtu_check (b[1], ip1_len,
adj1[0].rewrite_header.max_l3_packet_bytes,
ip1->flags_and_fragment_offset &
clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT),
@@ -2395,7 +2404,11 @@ ip4_rewrite_inline (vlib_main_t * vm,
vnet_buffer (b[0])->ip.save_rewrite_length = rw_len0;
/* Check MTU of outgoing interface. */
- ip4_mtu_check (b[0], clib_net_to_host_u16 (ip0->length),
+ u16 ip0_len = clib_net_to_host_u16 (ip0->length);
+ if (do_gso && (b[0]->flags & VNET_BUFFER_F_GSO))
+ ip0_len = gso_mtu_sz (b[0]);
+
+ ip4_mtu_check (b[0], ip0_len,
adj0[0].rewrite_header.max_l3_packet_bytes,
ip0->flags_and_fragment_offset &
clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT),
@@ -2465,6 +2478,23 @@ ip4_rewrite_inline (vlib_main_t * vm,
return frame->n_vectors;
}
+always_inline uword
+ip4_rewrite_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame,
+ int do_counters, int is_midchain, int is_mcast)
+{
+ vnet_main_t *vnm = vnet_get_main ();
+ if (PREDICT_FALSE (vnm->interface_main.gso_interface_count > 0))
+ return ip4_rewrite_inline_with_gso (vm, node, frame, do_counters,
+ is_midchain, is_mcast,
+ 1 /* do_gso */ );
+ else
+ return ip4_rewrite_inline_with_gso (vm, node, frame, do_counters,
+ is_midchain, is_mcast,
+ 0 /* no do_gso */ );
+}
+
/** @brief IPv4 rewrite node.
@node ip4-rewrite