commit 7ca151c381c1da146dd274c428ed7825906cc29a
author Sai Pavan Boddu <sai.pavan.boddu@xilinx.com> Tue May 12 20:24:50 2020 +0530
committer Jason Wang <jasowang@redhat.com> Thu Jun 18 21:05:51 2020 +0800
tree 68c9f9310b34205048f961eaea814f1f06787682
parent 88dba7ed842d18da0a9354660adf1e6a5a87b37b

net: cadence_gem: Add support for jumbo frames

Add a property "jumbo-max-len", which sets default value of jumbo frames
up to 16,383 bytes. Add Frame length checks for standard and jumbo
frames.

Signed-off-by: Sai Pavan Boddu <sai.pavan.boddu@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

include/hw/net/cadence_gem.h

diff --git a/include/hw/net/cadence_gem.h b/include/hw/net/cadence_gem.h
index eddac70..54e646f 100644
--- a/include/hw/net/cadence_gem.h
+++ b/include/hw/net/cadence_gem.h
@@ -40,7 +40,8 @@
 #define MAX_TYPE1_SCREENERS             16
 #define MAX_TYPE2_SCREENERS             16
 
-#define MAX_FRAME_SIZE 2048
+#define MAX_JUMBO_FRAME_SIZE_MASK 0x3FFF
+#define MAX_FRAME_SIZE MAX_JUMBO_FRAME_SIZE_MASK
 
 typedef struct CadenceGEMState {
     /*< private >*/
@@ -59,6 +60,7 @@
     uint8_t num_type1_screeners;
     uint8_t num_type2_screeners;
     uint32_t revision;
+    uint16_t jumbo_max_len;
 
     /* GEM registers backing store */
     uint32_t regs[CADENCE_GEM_MAXREG];