diff options
Diffstat (limited to 'src/vnet/buffer.h')
| -rw-r--r-- | src/vnet/buffer.h | 35 |
1 files changed, 26 insertions, 9 deletions
diff --git a/src/vnet/buffer.h b/src/vnet/buffer.h index 06696515ecd..ee04627fde3 100644 --- a/src/vnet/buffer.h +++ b/src/vnet/buffer.h @@ -66,14 +66,14 @@ _(17, FLOW_REPORT, "flow-report", 1) \ _(18, IS_DVR, "dvr", 1) \ _(19, QOS_DATA_VALID, "qos-data-valid", 0) \ - _(20, AVAIL1, "avail1", 1) \ - _(21, AVAIL2, "avail2", 1) \ - _(22, AVAIL3, "avail3", 1) \ - _(23, AVAIL4, "avail4", 1) \ - _(24, AVAIL5, "avail5", 1) \ - _(25, AVAIL6, "avail6", 1) \ - _(26, AVAIL7, "avail7", 1) \ - _(27, AVAIL8, "avail8", 1) + _(20, GSO, "gso", 0) \ + _(21, AVAIL1, "avail1", 1) \ + _(22, AVAIL2, "avail2", 1) \ + _(23, AVAIL3, "avail3", 1) \ + _(24, AVAIL4, "avail4", 1) \ + _(25, AVAIL5, "avail5", 1) \ + _(26, AVAIL6, "avail6", 1) \ + _(27, AVAIL7, "avail7", 1) /* * Please allocate the FIRST available bit, redefine @@ -396,6 +396,20 @@ typedef struct }; } gbp; + /** + * The L4 payload size set on input on GSO enabled interfaces + * when we receive a GSO packet (a chain of buffers with the first one + * having GSO bit set), and needs to persist all the way to the interface-output, + * in case the egress interface is not GSO-enabled - then we need to perform + * the segmentation, and use this value to cut the payload appropriately. + */ + u16 gso_size; + /* size of L4 prototol header */ + u16 gso_l4_hdr_sz; + + /* The union below has a u64 alignment, so this space is unused */ + u32 __unused2[1]; + union { struct @@ -410,7 +424,7 @@ typedef struct u64 pad[1]; u64 pg_replay_timestamp; }; - u32 unused[10]; + u32 unused[8]; }; } vnet_buffer_opaque2_t; @@ -424,6 +438,9 @@ STATIC_ASSERT (sizeof (vnet_buffer_opaque2_t) <= STRUCT_SIZE_OF (vlib_buffer_t, opaque2), "VNET buffer opaque2 meta-data too large for vlib_buffer"); +#define gso_mtu_sz(b) (vnet_buffer2(b)->gso_size + vnet_buffer2(b)->gso_l4_hdr_sz + vnet_buffer(b)->l4_hdr_offset) + + format_function_t format_vnet_buffer; #endif /* included_vnet_buffer_h */ |