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net: cadence_gem: Add support for jumbo frames

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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>
This commit is contained in:
Sai Pavan Boddu 2020-05-12 20:24:50 +05:30 • committed by Jason Wang
parent 88dba7ed84
commit 7ca151c381
2 changed files with 49 additions and 6 deletions
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4
include/hw/net/cadence_gem.h
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@ -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 @@ typedef struct CadenceGEMState {
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];