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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>
28 lines
789 B
C
28 lines
789 B
C
#ifndef UDP_H
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#define UDP_H
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#define UDP_TIMER_INTERVAL 1000 /* ms */
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void udp_sock_handler(struct ctx *c, int s, uint32_t events, char *pkt_buf,
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struct timespec *now);
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int udp_tap_handler(struct ctx *c, int af, void *addr,
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struct tap_msg *msg, int count, struct timespec *now);
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int udp_sock_init(struct ctx *c);
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void udp_timer(struct ctx *c, struct timespec *ts);
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/**
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* struct udp_ctx - Execution context for UDP
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* @fd_min: Lowest file descriptor number for UDP ever used
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* @fd_max: Highest file descriptor number for UDP ever used
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* @fd_in_seq: 1 if all socket numbers are in sequence, 0 otherwise
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* @timer_run: Timestamp of most recent timer run
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*/
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struct udp_ctx {
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int fd_min;
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int fd_max;
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int fd_in_seq;
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struct timespec timer_run;
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};
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#endif /* UDP_H */
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