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| author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2015-10-18 09:31:24 +0300 |
|---|---|---|
| committer | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2015-12-20 23:27:37 +0200 |
| commit | 6eb5e529d7e3bf85b50ab0b5178df905dfc53b06 (patch) | |
| tree | 23891c1b8c886b4f2c5302166ec3d34f5173111f /scripts/conmakehash.c | |
| parent | 3f73b8cad1d2923bf27caeaba705c4a64b287f1e (diff) | |
iwlwifi: pcie: build an A-MSDU using TSO core
When the op_mode sends an skb whose payload is bigger than
MSS, PCIe will create an A-MSDU out of it. PCIe assumes
that the skb that is coming from the op_mode can fit in one
A-MSDU. It is the op_mode's responsibility to make sure
that this guarantee holds.
Additional headers need to be built for the subframes.
The TSO core code takes care of the IP / TCP headers and
the driver takes care of the 802.11 subframe headers.
These headers are stored on a per-cpu page that is re-used
for all the packets handled on that same CPU. Each skb
holds a reference to that page and releases the page when
it is reclaimed. When the page gets full, it is released
and a new one is allocated.
Since any SKB that doesn't go through the fast-xmit path
of mac80211 will be segmented, we can assume here that the
packet is not WEP / TKIP and has a proper SNAP header.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Diffstat (limited to 'scripts/conmakehash.c')
0 files changed, 0 insertions, 0 deletions