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1. In x25_xmit, skb_reset_network_header is not necessary before we call lapb_data_request. The lapb module doesn't need skb->network_header. So there is no need to set skb->network_header before calling lapb_data_request. 2. In x25_data_indication (called by the lapb module after data have been received), skb_reset_network_header is not necessary before we call netif_rx. After we call netif_rx, the code in net/core/dev.c will call skb_reset_network_header before handing the skb to upper layers (in __netif_receive_skb_core, called by __netif_receive_skb_one_core, called by __netif_receive_skb, called by process_backlog). So we don't need to call skb_reset_network_header by ourselves. Cc: Martin Schiller <ms@dev.tdt.de> Signed-off-by: Xie He <xie.he.0141@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.