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48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
#define CT_SIZE 4096
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#define UNIX_SOCK_PATH "/tmp/passt.socket"
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/**
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* struct ct4 - IPv4 connection tracking entry
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* @p: IANA protocol number
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* @sa: Source address (as seen from tap interface)
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* @da: Destination address
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* @sp: Source port, network order
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* @dp: Destination port, network order
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* @hd: Destination MAC address
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* @hs: Source MAC address
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* @fd: File descriptor for corresponding AF_INET socket
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*/
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struct ct4 {
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uint8_t p;
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uint32_t sa;
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uint32_t da;
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uint16_t sp;
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uint16_t dp;
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unsigned char hd[ETH_ALEN];
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unsigned char hs[ETH_ALEN];
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int fd;
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};
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/**
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* struct ctx - Execution context
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* @epollfd: file descriptor for epoll instance
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* @fd_unix: AF_UNIX socket for tap file descriptor
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* @map4: Connection tracking table
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* @addr4: IPv4 address for external, routable interface
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* @mask4: IPv4 netmask, network order
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* @gw4: Default IPv4 gateway, network order
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* @dns4: IPv4 DNS address, network order
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* @ifn: Name of routable interface
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*/
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struct ctx {
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int epollfd;
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int fd_unix;
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struct ct4 map4[CT_SIZE];
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unsigned char mac[ETH_ALEN];
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unsigned long addr4;
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unsigned long mask4;
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unsigned long gw4;
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unsigned long dns4;
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char ifn[IF_NAMESIZE];
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};
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