sfc: Refactor struct efx_tx_buffer to use a flags field

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Add a flags field to struct efx_tx_buffer, replacing the
continuation and map_single booleans.

Since a single descriptor cannot be both a TSO header and the last
descriptor for an skb, unionise efx_tx_buffer::{skb,tsoh} and add
flags for validity of these fields.

Clear all flags in free buffers (whereas previously the continuation
flag would be set).

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>

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This commit is contained in:

Ben Hutchings 2012-05-17 20:52:20 +01:00

parent 8f4cccbbd9

commit 7668ff9c2a

3 changed files with 53 additions and 56 deletions

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27

drivers/net/ethernet/sfc/net_driver.h

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4

drivers/net/ethernet/sfc/nic.c

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78

drivers/net/ethernet/sfc/tx.c

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