net: qrtr: Clean up control packet handling
As the message header generation is deferred the internal functions for generating control packets can be simplified. This patch modifies qrtr_alloc_ctrl_packet() to, in addition to the sk_buff, return a reference to a struct qrtr_ctrl_pkt, which clarifies and simplifies the helpers to the point that these functions can be folded back into the callers. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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