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authorStefano Brivio <sbrivio@redhat.com>2021-07-21 12:01:04 +0200
committerStefano Brivio <sbrivio@redhat.com>2021-07-21 12:01:04 +0200
commit64a0ba3b272dd9ee175e0c6256a6d0cb1733599b (patch)
tree4a9ab4a8c4a264ad66d12ac8cc597a062f788963 /checksum.c
parent7fa3e90290d1966e25f3f8882ee25f14808e8e48 (diff)
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udp: Introduce recvmmsg()/sendmmsg(), zero-copy path from socket
Packets are received directly onto pre-cooked, static buffers for IPv4 (with partial checksum pre-calculation) and IPv6 frames, with pre-filled Ethernet addresses and, partially, IP headers, and sent out from the same buffers with sendmmsg(), for both passt and pasta (non-local traffic only) modes. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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