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-rw-r--r--src/vnet/pg/input.c19
-rw-r--r--src/vnet/pg/pg.api2
-rw-r--r--test/test_gso.py4
3 files changed, 10 insertions, 15 deletions
diff --git a/src/vnet/pg/input.c b/src/vnet/pg/input.c
index 483add0b5f3..6968cce19e7 100644
--- a/src/vnet/pg/input.c
+++ b/src/vnet/pg/input.c
@@ -1537,7 +1537,6 @@ fill_buffer_offload_flags (vlib_main_t * vm, u32 * buffers, u32 n_buffers,
{
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 *) vlib_buffer_get_current (b0);
@@ -1589,25 +1588,21 @@ fill_buffer_offload_flags (vlib_main_t * vm, u32 * buffers, u32 n_buffers,
if (l4_proto == IP_PROTOCOL_TCP)
{
b0->flags |= VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
- tcp_header_t *tcp = (tcp_header_t *) (vlib_buffer_get_current (b0) +
- vnet_buffer
- (b0)->l4_hdr_offset);
- tcp->checksum = 0;
- if (gso_enabled)
+
+ /* only set GSO flag for chained buffers */
+ if (gso_enabled && (b0->flags & VLIB_BUFFER_NEXT_PRESENT))
{
b0->flags |= VNET_BUFFER_F_GSO;
- l4_hdr_sz = tcp_header_bytes (tcp);
- vnet_buffer2 (b0)->gso_l4_hdr_sz = l4_hdr_sz;
+ tcp_header_t *tcp =
+ (tcp_header_t *) (vlib_buffer_get_current (b0) +
+ vnet_buffer (b0)->l4_hdr_offset);
+ vnet_buffer2 (b0)->gso_l4_hdr_sz = tcp_header_bytes (tcp);
vnet_buffer2 (b0)->gso_size = gso_size;
}
}
else if (l4_proto == IP_PROTOCOL_UDP)
{
b0->flags |= VNET_BUFFER_F_OFFLOAD_UDP_CKSUM;
- udp_header_t *udp = (udp_header_t *) (vlib_buffer_get_current (b0) +
- vnet_buffer
- (b0)->l4_hdr_offset);
- udp->checksum = 0;
}
}
}
diff --git a/src/vnet/pg/pg.api b/src/vnet/pg/pg.api
index ad44beeedfa..86343d5c8df 100644
--- a/src/vnet/pg/pg.api
+++ b/src/vnet/pg/pg.api
@@ -26,7 +26,7 @@ import "vnet/interface_types.api";
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
@param interface_id - interface index
- @param enable_gso - enable gso on this interface
+ @param gso_enabled - enable gso on this interface
@param gso_size - gso size on this interface
*/
define pg_create_interface
diff --git a/test/test_gso.py b/test/test_gso.py
index 7189104a859..ba830049e64 100644
--- a/test/test_gso.py
+++ b/test/test_gso.py
@@ -371,7 +371,7 @@ class TestGSO(VppTestCase):
self.assertEqual(rx[IP].src, self.pg0.local_ip4)
self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
self.assert_ip_checksum_valid(rx)
- self.assert_udp_checksum_valid(rx)
+ self.assert_udp_checksum_valid(rx, ignore_zero_checksum=False)
self.assertEqual(rx[VXLAN].vni, 10)
inner = rx[VXLAN].payload
self.assertEqual(rx[IP].len - 20 - 8 - 8, len(inner))
@@ -402,7 +402,7 @@ class TestGSO(VppTestCase):
self.assertEqual(rx[IP].src, self.pg0.local_ip4)
self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
self.assert_ip_checksum_valid(rx)
- self.assert_udp_checksum_valid(rx)
+ self.assert_udp_checksum_valid(rx, ignore_zero_checksum=False)
self.assertEqual(rx[VXLAN].vni, 10)
inner = rx[VXLAN].payload
self.assertEqual(rx[IP].len - 20 - 8 - 8, len(inner))