Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ce3ba1399d2ba81b3699a82649df0cd8223c6662
Commit: ce3ba1399d2ba81b3699a82649df0cd8223c6662
Parent: be63a21c9573fbf88106ff0f030da5974551257b
Author: Matti Linnanvuori <[EMAIL PROTECTED]>
AuthorDate: Tue Jan 15 06:25:27 2008 -0800
Committer: Jeff Garzik <[EMAIL PROTECTED]>
CommitDate: Fri Jan 18 14:41:49 2008 -0500
Documentation: add a guideline for hard_start_xmit method
Add a guideline not to modify SKBs.
Signed-off-by: Matti Linnanvuori <[EMAIL PROTECTED]>
Signed-off-by: Jeff Garzik <[EMAIL PROTECTED]>
---
Documentation/networking/driver.txt | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/Documentation/networking/driver.txt
b/Documentation/networking/driver.txt
index 4f7da5a..ea72d2e 100644
--- a/Documentation/networking/driver.txt
+++ b/Documentation/networking/driver.txt
@@ -61,7 +61,10 @@ Transmit path guidelines:
2) Do not forget to update netdev->trans_start to jiffies after
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
and in some finite amount of time.
-
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