Don't consume 36 kB just for Ethernet buffers.

Seppo Takalo · Seppo Takalo · commit 50eb243762f1 · 2019-01-02T19:05:16.000+02:00
Kintis EMAC is consuming 16 rinbuffers for input, and 8 buffers for output.
This is over-use because input packets are immediately allocated from
heap when passed to LwIP. Therefore the number can be creatly reduced.
diff --git a/features/netsocket/emac-drivers/TARGET_Freescale_EMAC/mbed_lib.json b/features/netsocket/emac-drivers/TARGET_Freescale_EMAC/mbed_lib.json
@@ -1,7 +1,7 @@
 {
     "name": "kinetis-emac",
     "config": {
-        "rx-ring-len": 16,
-        "tx-ring-len": 8
+        "rx-ring-len": 2,
+        "tx-ring-len": 1
     }
 }

Original file line number	Diff line number	Diff line change
`@@ -1,7 +1,7 @@`
`1`	`1`	`{`
`2`	`2`	`"name": "kinetis-emac",`
`3`	`3`	`"config": {`
`4`		`- "rx-ring-len": 16,`
`5`		`- "tx-ring-len": 8`
	`4`	`+ "rx-ring-len": 2,`
	`5`	`+ "tx-ring-len": 1`
`6`	`6`	`}`
`7`	`7`	`}`