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| author |   Johannes Berg <johannes.berg@intel.com> | 2015-04-17 16:38:31 +0200 |
|---|---|---|
| committer |   Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2015-08-04 21:29:40 +0300 |
| commit | 206eea7833859f9e39c8a7439196743a2d8dfc9b (patch) | |
| tree | 6762505473fab68567957411c899c50fd77a5bdc /drivers/net/wireless/iwlwifi/pcie/internal.h | |
| parent | iwlwifi: add new TLV capability flag for gscan support (diff) | |
| download | linux-dev-206eea7833859f9e39c8a7439196743a2d8dfc9b.tar.xz linux-dev-206eea7833859f9e39c8a7439196743a2d8dfc9b.zip | |
iwlwifi: pcie: support frag SKBs
Allow frag SKBs in PCIe and advertise the maximum number of frags
to the opmode. As a fallback. linearize the SKB if it exceeds the
maximum number of fragments. This allows using the hardware better
(filling more TBs) and should improve performance when used by the
opmode.
Also adjust tracing to be able to deal with this.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/pcie/internal.h')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/pcie/internal.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/pcie/internal.h b/drivers/net/wireless/iwlwifi/pcie/internal.h index 17f65dc89472..feb2f7e81134 100644 --- a/drivers/net/wireless/iwlwifi/pcie/internal.h +++ b/drivers/net/wireless/iwlwifi/pcie/internal.h @@ -44,6 +44,12 @@ #include "iwl-io.h" #include "iwl-op-mode.h" +/* We need 2 entries for the TX command and header, and another one might + * be needed for potential data in the SKB's head. The remaining ones can + * be used for frags. + */ +#define IWL_PCIE_MAX_FRAGS (IWL_NUM_OF_TBS - 3) + /* * RX related structures and functions */ |