diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/tap-aix.c | 9 | ||||
| -rw-r--r-- | net/tap-bsd.c | 9 | ||||
| -rw-r--r-- | net/tap-linux.c | 29 | ||||
| -rw-r--r-- | net/tap-linux.h | 2 | ||||
| -rw-r--r-- | net/tap-solaris.c | 9 | ||||
| -rw-r--r-- | net/tap-win32.c | 9 | ||||
| -rw-r--r-- | net/tap.c | 21 | ||||
| -rw-r--r-- | net/tap.h | 4 |
8 files changed, 92 insertions, 0 deletions
diff --git a/net/tap-aix.c b/net/tap-aix.c index 4bc9f2f6d..e19aaba11 100644 --- a/net/tap-aix.c +++ b/net/tap-aix.c @@ -46,6 +46,15 @@ int tap_probe_has_ufo(int fd) return 0; } +int tap_probe_vnet_hdr_len(int fd, int len) +{ + return 0; +} + +void tap_fd_set_vnet_hdr_len(int fd, int len) +{ +} + void tap_fd_set_offload(int fd, int csum, int tso4, int tso6, int ecn, int ufo) { diff --git a/net/tap-bsd.c b/net/tap-bsd.c index 3773d5da5..351307533 100644 --- a/net/tap-bsd.c +++ b/net/tap-bsd.c @@ -116,6 +116,15 @@ int tap_probe_has_ufo(int fd) return 0; } +int tap_probe_vnet_hdr_len(int fd, int len) +{ + return 0; +} + +void tap_fd_set_vnet_hdr_len(int fd, int len) +{ +} + void tap_fd_set_offload(int fd, int csum, int tso4, int tso6, int ecn, int ufo) { diff --git a/net/tap-linux.c b/net/tap-linux.c index c92983cb5..f7aa9041b 100644 --- a/net/tap-linux.c +++ b/net/tap-linux.c @@ -129,6 +129,35 @@ int tap_probe_has_ufo(int fd) return 1; } +/* Verify that we can assign given length */ +int tap_probe_vnet_hdr_len(int fd, int len) +{ + int orig; + if (ioctl(fd, TUNGETVNETHDRSZ, &orig) == -1) { + return 0; + } + if (ioctl(fd, TUNSETVNETHDRSZ, &len) == -1) { + return 0; + } + /* Restore original length: we can't handle failure. */ + if (ioctl(fd, TUNSETVNETHDRSZ, &orig) == -1) { + fprintf(stderr, "TUNGETVNETHDRSZ ioctl() failed: %s. Exiting.\n", + strerror(errno)); + assert(0); + return -errno; + } + return 1; +} + +void tap_fd_set_vnet_hdr_len(int fd, int len) +{ + if (ioctl(fd, TUNSETVNETHDRSZ, &len) == -1) { + fprintf(stderr, "TUNSETVNETHDRSZ ioctl() failed: %s. Exiting.\n", + strerror(errno)); + assert(0); + } +} + void tap_fd_set_offload(int fd, int csum, int tso4, int tso6, int ecn, int ufo) { diff --git a/net/tap-linux.h b/net/tap-linux.h index 727fcf501..659e98122 100644 --- a/net/tap-linux.h +++ b/net/tap-linux.h @@ -27,6 +27,8 @@ #define TUNSETOFFLOAD _IOW('T', 208, unsigned int) #define TUNGETIFF _IOR('T', 210, unsigned int) #define TUNSETSNDBUF _IOW('T', 212, int) +#define TUNGETVNETHDRSZ _IOR('T', 215, int) +#define TUNSETVNETHDRSZ _IOW('T', 216, int) #endif diff --git a/net/tap-solaris.c b/net/tap-solaris.c index 4ac61d2ad..c216d2826 100644 --- a/net/tap-solaris.c +++ b/net/tap-solaris.c @@ -212,6 +212,15 @@ int tap_probe_has_ufo(int fd) return 0; } +int tap_probe_vnet_hdr_len(int fd, int len) +{ + return 0; +} + +void tap_fd_set_vnet_hdr_len(int fd, int len) +{ +} + void tap_fd_set_offload(int fd, int csum, int tso4, int tso6, int ecn, int ufo) { diff --git a/net/tap-win32.c b/net/tap-win32.c index 74348daf5..9fe4fcd5f 100644 --- a/net/tap-win32.c +++ b/net/tap-win32.c @@ -728,6 +728,15 @@ int tap_has_vnet_hdr(VLANClientState *vc) return 0; } +int tap_probe_vnet_hdr_len(int fd, int len) +{ + return 0; +} + +void tap_fd_set_vnet_hdr_len(int fd, int len) +{ +} + void tap_using_vnet_hdr(VLANClientState *vc, int using_vnet_hdr) { } @@ -232,6 +232,27 @@ int tap_has_vnet_hdr(VLANClientState *nc) return !!s->host_vnet_hdr_len; } +int tap_has_vnet_hdr_len(VLANClientState *nc, int len) +{ + TAPState *s = DO_UPCAST(TAPState, nc, nc); + + assert(nc->info->type == NET_CLIENT_TYPE_TAP); + + return tap_probe_vnet_hdr_len(s->fd, len); +} + +void tap_set_vnet_hdr_len(VLANClientState *nc, int len) +{ + TAPState *s = DO_UPCAST(TAPState, nc, nc); + + assert(nc->info->type == NET_CLIENT_TYPE_TAP); + assert(len == sizeof(struct virtio_net_hdr_mrg_rxbuf) || + len == sizeof(struct virtio_net_hdr)); + + tap_fd_set_vnet_hdr_len(s->fd, len); + s->host_vnet_hdr_len = len; +} + void tap_using_vnet_hdr(VLANClientState *nc, int using_vnet_hdr) { TAPState *s = DO_UPCAST(TAPState, nc, nc); @@ -40,13 +40,17 @@ ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen); int tap_has_ufo(VLANClientState *vc); int tap_has_vnet_hdr(VLANClientState *vc); +int tap_has_vnet_hdr_len(VLANClientState *vc, int len); void tap_using_vnet_hdr(VLANClientState *vc, int using_vnet_hdr); void tap_set_offload(VLANClientState *vc, int csum, int tso4, int tso6, int ecn, int ufo); +void tap_set_vnet_hdr_len(VLANClientState *vc, int len); int tap_set_sndbuf(int fd, QemuOpts *opts); int tap_probe_vnet_hdr(int fd); +int tap_probe_vnet_hdr_len(int fd, int len); int tap_probe_has_ufo(int fd); void tap_fd_set_offload(int fd, int csum, int tso4, int tso6, int ecn, int ufo); +void tap_fd_set_vnet_hdr_len(int fd, int len); int tap_get_fd(VLANClientState *vc); |