hw/net/rocker/rocker.h

   1 /*
   2  * QEMU rocker switch emulation
   3  *
   4  * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
   5  * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us>
   6  * Copyright (c) 2014 Neil Horman <nhorman@tuxdriver.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU General Public License for more details.
  17  */
  18
  19 #ifndef ROCKER_H
  20 #define ROCKER_H
  21
  22 #include "qemu/sockets.h"
  23 #include "qom/object.h"
  24
  25 #if defined(DEBUG_ROCKER)
  26 #  define DPRINTF(fmt, ...) \
  27     do {                                                           \
  28         struct timeval tv;                                         \
  29         char timestr[64];                                          \
  30         time_t now;                                                \
  31         gettimeofday(&tv, NULL);                                   \
  32         now = tv.tv_sec;                                           \
  33         strftime(timestr, sizeof(timestr), "%T", localtime(&now)); \
  34         fprintf(stderr, "%s.%06ld ", timestr, tv.tv_usec);         \
  35         fprintf(stderr, "ROCKER: " fmt, ## __VA_ARGS__);           \
  36     } while (0)
  37 #else
  38 static inline GCC_FMT_ATTR(1, 2) int DPRINTF(const char *fmt, ...)
  39 {
  40     return 0;
  41 }
  42 #endif
  43
  44 #define __le16 uint16_t
  45 #define __le32 uint32_t
  46 #define __le64 uint64_t
  47
  48 #define __be16 uint16_t
  49 #define __be32 uint32_t
  50 #define __be64 uint64_t
  51
  52 static inline bool ipv4_addr_is_multicast(__be32 addr)
  53 {
  54     return (addr & htonl(0xf0000000)) == htonl(0xe0000000);
  55 }
  56
  57 typedef struct ipv6_addr {
  58     union {
  59         uint8_t addr8[16];
  60         __be16 addr16[8];
  61         __be32 addr32[4];
  62     };
  63 } Ipv6Addr;
  64
  65 static inline bool ipv6_addr_is_multicast(const Ipv6Addr *addr)
  66 {
  67     return (addr->addr32[0] & htonl(0xFF000000)) == htonl(0xFF000000);
  68 }
  69
  70 typedef struct world World;
  71 typedef struct desc_info DescInfo;
  72 typedef struct desc_ring DescRing;
  73
  74 #define TYPE_ROCKER "rocker"
  75 typedef struct rocker Rocker;
  76 DECLARE_INSTANCE_CHECKER(Rocker, ROCKER,
  77                          TYPE_ROCKER)
  78
  79 Rocker *rocker_find(const char *name);
  80 uint32_t rocker_fp_ports(Rocker *r);
  81 int rocker_event_link_changed(Rocker *r, uint32_t pport, bool link_up);
  82 int rocker_event_mac_vlan_seen(Rocker *r, uint32_t pport, uint8_t *addr,
  83                                uint16_t vlan_id);
  84 int rx_produce(World *world, uint32_t pport,
  85                const struct iovec *iov, int iovcnt, uint8_t copy_to_cpu);
  86 int rocker_port_eg(Rocker *r, uint32_t pport,
  87                    const struct iovec *iov, int iovcnt);
  88
  89 #endif /* ROCKER_H */