diff options
| author | Alexander Lobakin <aleksander.lobakin@intel.com> | 2024-12-11 18:26:47 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-12-12 18:23:08 -0800 |
| commit | 0dffdb3b3366c932fb7d210f5032476c552f7000 (patch) | |
| tree | 79b88b54d57625f545f2cdd3351e553d5aa4478a /net/unix/af_unix.c | |
| parent | 207ff83cecaeaacf0d47c8ccbe927c8354ac1280 (diff) | |
skbuff: allow 2-4-argument skb_frag_dma_map()
skb_frag_dma_map(dev, frag, 0, skb_frag_size(frag), DMA_TO_DEVICE)
is repeated across dozens of drivers and really wants a shorthand.
Add a macro which will count args and handle all possible number
from 2 to 5. Semantics:
skb_frag_dma_map(dev, frag) ->
__skb_frag_dma_map(dev, frag, 0, skb_frag_size(frag), DMA_TO_DEVICE)
skb_frag_dma_map(dev, frag, offset) ->
__skb_frag_dma_map(dev, frag, offset, skb_frag_size(frag) - offset,
DMA_TO_DEVICE)
skb_frag_dma_map(dev, frag, offset, size) ->
__skb_frag_dma_map(dev, frag, offset, size, DMA_TO_DEVICE)
skb_frag_dma_map(dev, frag, offset, size, dir) ->
__skb_frag_dma_map(dev, frag, offset, size, dir)
No object code size changes for the existing callers. Users passing
less arguments also won't have bigger size comparing to the full
equivalent call.
Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Link: https://patch.msgid.link/20241211172649.761483-11-aleksander.lobakin@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions