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[af_packet] Add new AF_PACKET driver for Linux

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This code largely inspired by tap.c.  Allows for testing iPXE on real
NICs from within Linux.  For example:

  make bin-x86_64-linux/af_packet.linux
  valgrind ./bin-x86_64-linux/af_packet.linux --net af_packet,if=eth3

Tested as x86_64 and i386 binary.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
David Decotigny
2017-01-20 10:29:24 -08:00
committed by Michael Brown
parent 04c7befa73
commit b6f524388b
4 changed files with 372 additions and 0 deletions
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1
src/include/ipxe/errfile.h
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@@ -194,6 +194,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#define ERRFILE_pciea ( ERRFILE_DRIVER | 0x00c00000 )
#define ERRFILE_axge ( ERRFILE_DRIVER | 0x00c10000 )
#define ERRFILE_thunderx ( ERRFILE_DRIVER | 0x00c20000 )
#define ERRFILE_af_packet ( ERRFILE_DRIVER | 0x00c30000 )
#define ERRFILE_aoe ( ERRFILE_NET | 0x00000000 )
#define ERRFILE_arp ( ERRFILE_NET | 0x00010000 )

7
src/include/linux_api.h
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@@ -46,6 +46,8 @@ typedef __kernel_loff_t loff_t;
#include <linux/poll.h>
typedef unsigned long nfds_t;
typedef uint32_t useconds_t;
typedef uint32_t socklen_t;
struct sockaddr;
#define MAP_FAILED ( ( void * ) -1 )
#define SEEK_SET 0
@@ -68,6 +70,11 @@ extern void * linux_mmap ( void *addr, __kernel_size_t length, int prot,
extern void * linux_mremap ( void *old_address, __kernel_size_t old_size,
__kernel_size_t new_size, int flags );
extern int linux_munmap ( void *addr, __kernel_size_t length );
extern int linux_socket ( int domain, int type_, int protocol );
extern int linux_bind ( int fd, const struct sockaddr *addr,
socklen_t addrlen );
extern ssize_t linux_sendto ( int fd, const void *buf, size_t len, int flags,
const struct sockaddr *daddr, socklen_t addrlen );
extern const char * linux_strerror ( int errnum );