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author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-01-16 22:06:30 +0100 |
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committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-01-16 22:06:30 +0100 |
commit | 0d9d349d8788d30f3fc3bb39279c370f94d9dbec (patch) | |
tree | 874f301d180bd2a80dee68ec4caf79ff64f9bed9 /Documentation/networking/packet_mmap.txt | |
parent | cba1c07377132fb87b2c73b395ef386da7e03f60 (diff) | |
parent | 145830dfb005961cb507a578c9d2e7622f0b3716 (diff) | |
download | op-kernel-dev-0d9d349d8788d30f3fc3bb39279c370f94d9dbec.zip op-kernel-dev-0d9d349d8788d30f3fc3bb39279c370f94d9dbec.tar.gz |
Merge commit origin/master into drm-intel-next
Conflicts are getting out of hand, and now we have to shuffle even
more in -next which was also shuffled in -fixes (the call for
drm_mode_config_reset needs to move yet again).
So do a proper backmerge. I wanted to wait with this for the 3.13
relaese, but alas let's just do this now.
Conflicts:
drivers/gpu/drm/i915/i915_reg.h
drivers/gpu/drm/i915/intel_ddi.c
drivers/gpu/drm/i915/intel_display.c
drivers/gpu/drm/i915/intel_pm.c
Besides the conflict around the forcewake get/put (where we chaged the
called function in -fixes and added a new parameter in -next) code all
the current conflicts are of the adjacent lines changed type.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'Documentation/networking/packet_mmap.txt')
-rw-r--r-- | Documentation/networking/packet_mmap.txt | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/networking/packet_mmap.txt b/Documentation/networking/packet_mmap.txt index c012236..8e48e3b 100644 --- a/Documentation/networking/packet_mmap.txt +++ b/Documentation/networking/packet_mmap.txt @@ -123,6 +123,16 @@ Transmission process is similar to capture as shown below. [shutdown] close() --------> destruction of the transmission socket and deallocation of all associated resources. +Socket creation and destruction is also straight forward, and is done +the same way as in capturing described in the previous paragraph: + + int fd = socket(PF_PACKET, mode, 0); + +The protocol can optionally be 0 in case we only want to transmit +via this socket, which avoids an expensive call to packet_rcv(). +In this case, you also need to bind(2) the TX_RING with sll_protocol = 0 +set. Otherwise, htons(ETH_P_ALL) or any other protocol, for example. + Binding the socket to your network interface is mandatory (with zero copy) to know the header size of frames used in the circular buffer. |