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net: dsa: tag_8021q: clarify index limitation 

Now that there's no restriction from the DSA core side regarding
the switch IDs and port numbers, only tag_8021q which is currently
reserving 3 bits for the switch ID and 4 bits for the port number, has
limitation for these values. Update their descriptions to reflect that.

Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vivien Didelot 2019-10-30 22:09:19 -04:00 committed by David S. Miller
parent 27d4d19d7c
commit fcee85f19f
1 changed files with 2 additions and 3 deletions
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5
net/dsa/tag_8021q.c
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@ -31,15 +31,14 @@
* Must be transmitted as zero and ignored on receive. * Must be transmitted as zero and ignored on receive.
* *
* SWITCH_ID - VID[8:6]: * SWITCH_ID - VID[8:6]:
* Index of switch within DSA tree. Must be between 0 and * Index of switch within DSA tree. Must be between 0 and 7.
* DSA_MAX_SWITCHES - 1.
* *
* RSV - VID[5:4]: * RSV - VID[5:4]:
* To be used for further expansion of PORT or for other purposes. * To be used for further expansion of PORT or for other purposes.
* Must be transmitted as zero and ignored on receive. * Must be transmitted as zero and ignored on receive.
* *
* PORT - VID[3:0]: * PORT - VID[3:0]:
* Index of switch port. Must be between 0 and DSA_MAX_PORTS - 1. * Index of switch port. Must be between 0 and 15.
*/ */
#define DSA_8021Q_DIR_SHIFT 10 #define DSA_8021Q_DIR_SHIFT 10