Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit ce3ba139 authored by Matti Linnanvuori's avatar Matti Linnanvuori Committed by Jeff Garzik
Browse files

Documentation: add a guideline for hard_start_xmit method 



Add a guideline not to modify SKBs.

Signed-off-by: default avatarMatti Linnanvuori <mattilinnanvuori@yahoo.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent be63a21c

Documentation/networking/driver.txt

+4 −1
Original line number Original line Diff line number Diff line
@@ -61,7 +61,10 @@ Transmit path guidelines: 
2) Do not forget to update netdev->trans_start to jiffies after

2) Do not forget to update netdev->trans_start to jiffies after

   each new tx packet is given to the hardware.

   each new tx packet is given to the hardware.





3) Do not forget that once you return 0 from your hard_start_xmit

3) A hard_start_xmit method must not modify the shared parts of a

   cloned SKB.



4) Do not forget that once you return 0 from your hard_start_xmit

   method, it is your driver's responsibility to free up the SKB

   method, it is your driver's responsibility to free up the SKB

   and in some finite amount of time.

   and in some finite amount of time.