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https://passt.top/passt
synced 2024-07-01 23:42:41 +00:00
e07f539ae0
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>
41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
void err(const char *format, ...);
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void warn(const char *format, ...);
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void info(const char *format, ...);
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#ifdef DEBUG
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void debug(const char *format, ...);
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#else
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#define debug(...) { }
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#endif
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#define CHECK_SET_MIN_MAX(basename, fd) \
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do { \
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if ((fd) < basename##min) \
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basename##min = (fd); \
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if ((fd) > basename##max) \
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basename##max = (fd); \
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} while (0)
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#define CHECK_SET_MIN_MAX_PROTO_FD(proto, ipproto, proto_ctx, fd) \
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do { \
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if ((proto) == (ipproto)) \
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CHECK_SET_MIN_MAX(c->proto_ctx.fd_, (fd)); \
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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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#define FD_PROTO(x, proto) \
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(IN_INTERVAL(c->proto.fd_min, c->proto.fd_max, (x)))
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#define PORT_IS_EPHEMERAL(port) ((port) >= (1 << 15) + (1 << 14)) /* RFC 6335 */
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uint16_t csum_fold(uint32_t sum);
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uint16_t csum_ip4(void *buf, size_t len);
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void csum_tcp4(struct iphdr *iph);
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char *ipv6_l4hdr(struct ipv6hdr *ip6h, uint8_t *proto);
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int sock_l4(struct ctx *c, int af, uint16_t proto, uint16_t port);
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int timespec_diff_ms(struct timespec *a, struct timespec *b);
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