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udp, passt: Introduce socket packet buffer, avoid getsockname() for UDP
This is in preparation for scatter-gather IO on the UDP receive path: save a getsockname() syscall by setting a flag if we get the numbering of all bound sockets in a strict sequence (expected, in practice) and repurpose the tap buffer to be also a socket receive buffer, passing it down to protocol handlers. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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10 changed files with 103 additions and 34 deletions
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util.h
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util.h
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@ -23,6 +23,7 @@ void debug(const char *format, ...);
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} while (0)
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#define MIN(x, y) (((x) < (y)) ? (x) : (y))
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#define MAX(x, y) (((x) > (y)) ? (x) : (y))
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#define IN_INTERVAL(a, b, x) ((x) >= (a) && (x) <= (b))
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