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authorDavid Gibson <david@gibson.dropbear.id.au>2024-05-01 18:31:10 +1000
committerStefano Brivio <sbrivio@redhat.com>2024-05-02 16:13:52 +0200
commit1ba76c9e8c14b21d8c2c7cb71abdaa85feb96605 (patch)
tree29cfaf8d581711fb1d80cf45654bc404d778e89f /contrib/apparmor
parentd4598e1d18ac2b0ff95e34cf788a0fcab98cc405 (diff)
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udp: Single buffer for IPv4, IPv6 headers and metadata
Currently we have separate arrays for IPv4 and IPv6 which contain the headers for guest-bound packets, and also the originating socket address. We can combine these into a single array of "metadata" structures with space for both pre-cooked IPv4 and IPv6 headers, as well as shared space for the tap specific header and socket address (using sockaddr_inany). Because we're using IOVs to separately address the pieces of each frame, these structures don't need to be packed to keep the headers contiguous so we can more naturally arrange for the alignment we want. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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