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authorDavid Gibson <david@gibson.dropbear.id.au>2023-01-06 11:43:17 +1100
committerStefano Brivio <sbrivio@redhat.com>2023-01-23 18:54:52 +0100
commit4b3d38a0690988387fa4cef432ad96fe7ee32bf8 (patch)
tree667da707a578ebadb5f6a5d27e9eba7493ab0e83 /passt.c
parente4443ba9bd32b5d1f80a3167b6073e8f3ff4f14a (diff)
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tap: Add "tap headers" abstraction
Currently both the TCP and UDP code need to deal in various places with the details of the L2 headers, and also the tap-specific "vnet_len" header. This makes abstracting the tap interface to new backends (e.g. vhost-user or tun) more difficult. To improve this abstraction, create a new 'tap_hdr' structure which represents both L2 (always Ethernet at the moment, but might be vary in future) and any additional tap specific headers (such as the qemu socket's vnet_len field). Provide helper functions and macros to initialize, update and use it. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Diffstat (limited to 'passt.c')
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