merd: Rename to PASST

Plug A Simple Socket Transport.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
Stefano Brivio
2020-07-20 16:41:49 +02:00
parent b439984641
commit 6709ade2bd
7 changed files with 21 additions and 18 deletions

47
passt.h Normal file
View File

@@ -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];
};