From 6709ade2bde563f31e8d28a27c473fe626216e5d Mon Sep 17 00:00:00 2001 From: Stefano Brivio Date: Mon, 20 Jul 2020 16:41:49 +0200 Subject: merd: Rename to PASST Plug A Simple Socket Transport. Signed-off-by: Stefano Brivio --- passt.h | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 passt.h (limited to 'passt.h') diff --git a/passt.h b/passt.h new file mode 100644 index 0000000..402c95d --- /dev/null +++ b/passt.h @@ -0,0 +1,47 @@ +#define CT_SIZE 4096 +#define UNIX_SOCK_PATH "/tmp/passt.socket" + +/** + * struct ct4 - IPv4 connection tracking entry + * @p: IANA protocol number + * @sa: Source address (as seen from tap interface) + * @da: Destination address + * @sp: Source port, network order + * @dp: Destination port, network order + * @hd: Destination MAC address + * @hs: Source MAC address + * @fd: File descriptor for corresponding AF_INET socket + */ +struct ct4 { + uint8_t p; + uint32_t sa; + uint32_t da; + uint16_t sp; + uint16_t dp; + unsigned char hd[ETH_ALEN]; + unsigned char hs[ETH_ALEN]; + int fd; +}; + +/** + * struct ctx - Execution context + * @epollfd: file descriptor for epoll instance + * @fd_unix: AF_UNIX socket for tap file descriptor + * @map4: Connection tracking table + * @addr4: IPv4 address for external, routable interface + * @mask4: IPv4 netmask, network order + * @gw4: Default IPv4 gateway, network order + * @dns4: IPv4 DNS address, network order + * @ifn: Name of routable interface + */ +struct ctx { + int epollfd; + int fd_unix; + struct ct4 map4[CT_SIZE]; + unsigned char mac[ETH_ALEN]; + unsigned long addr4; + unsigned long mask4; + unsigned long gw4; + unsigned long dns4; + char ifn[IF_NAMESIZE]; +}; -- cgit v1.2.3