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rxrpc: Don't store the rxrpc header in the Tx queue sk_buffs

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Don't store the rxrpc protocol header in sk_buffs on the transmit queue,
but rather generate it on the fly and pass it to kernel_sendmsg() as a
separate iov.  This reduces the amount of storage required.

Note that the security header is still stored in the sk_buff as it may get
encrypted along with the data (and doesn't change with each transmission).

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells 2016-09-22 00:29:31 +01:00
commit 5a924b8951
6 changed files with 71 additions and 88 deletions
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