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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>
38 lines
1.2 KiB
C
38 lines
1.2 KiB
C
#ifndef TCP_H
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#define TCP_H
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#define TCP_TIMER_INTERVAL 20 /* ms */
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struct ctx;
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void tcp_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 tcp_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 tcp_sock_init(struct ctx *c);
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void tcp_timer(struct ctx *c, struct timespec *ts);
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/**
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* struct tcp_ctx - Execution context for TCP routines
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* @hash_secret: 128-bit secret for hash functions, ISN and hash table
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* @fd_min: Lowest file descriptor number for TCP ever used
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* @fd_max: Highest file descriptor number for TCP ever used
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* @fd_listen_min: Lowest file descriptor number for listening sockets
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* @fd_listen_max: Highest file descriptor number for listening sockets
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* @fd_conn_min: Lowest file descriptor number for connected sockets
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* @fd_conn_max: Highest file descriptor number for connected sockets
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* @timer_run: Timestamp of most recent timer run
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*/
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struct tcp_ctx {
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uint64_t hash_secret[2];
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int fd_min;
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int fd_max;
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int fd_listen_min;
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int fd_listen_max;
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int fd_conn_min;
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int fd_conn_max;
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struct timespec timer_run;
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};
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#endif /* TCP_H */
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