20 #include <linux/if_ether.h> 21 #include <linux/if_packet.h> 22 #include <sys/ioctl.h> 26 #include <sys/types.h> 39 #define AF_PACKET_TX_FRAMES_PER_BLOCK 1024 40 #define AF_PACKET_TX_FRAME_SIZE (2048 * 5) 41 #define AF_PACKET_TX_BLOCK_NR 1 42 #define AF_PACKET_TX_FRAME_NR (AF_PACKET_TX_BLOCK_NR * \ 43 AF_PACKET_TX_FRAMES_PER_BLOCK) 44 #define AF_PACKET_TX_BLOCK_SIZE (AF_PACKET_TX_FRAME_SIZE * \ 45 AF_PACKET_TX_FRAMES_PER_BLOCK) 47 #define AF_PACKET_RX_FRAMES_PER_BLOCK 1024 48 #define AF_PACKET_RX_FRAME_SIZE (2048 * 5) 49 #define AF_PACKET_RX_BLOCK_NR 1 50 #define AF_PACKET_RX_FRAME_NR (AF_PACKET_RX_BLOCK_NR * \ 51 AF_PACKET_RX_FRAMES_PER_BLOCK) 52 #define AF_PACKET_RX_BLOCK_SIZE (AF_PACKET_RX_FRAME_SIZE * \ 53 AF_PACKET_RX_FRAMES_PER_BLOCK) 80 "sysfs write failed to change MTU: %U",
83 return VNET_API_ERROR_SYSCALL_ERROR_1;
113 s =
format (0,
"/sys/class/net/%s/bridge%c", host_if_name, 0);
114 dir = opendir ((
char *) s);
132 struct sockaddr_ll sll;
133 int ver = TPACKET_V2;
134 socklen_t req_sz =
sizeof (
struct tpacket_req);
135 u32 ring_sz = rx_req->tp_block_size * rx_req->tp_block_nr +
136 tx_req->tp_block_size * tx_req->tp_block_nr;
138 if ((*fd = socket (AF_PACKET, SOCK_RAW, htons (ETH_P_ALL))) < 0)
141 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
146 memset (&sll, 0,
sizeof (sll));
147 sll.sll_family = PF_PACKET;
148 sll.sll_protocol = htons (ETH_P_ALL);
149 sll.sll_ifindex = host_if_index;
150 if ((err = bind (*fd, (
struct sockaddr *) &sll,
sizeof (sll))) < 0)
153 "Failed to bind rx packet socket (error %d)", err);
154 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
159 setsockopt (*fd, SOL_PACKET, PACKET_VERSION, &ver,
sizeof (ver))) < 0)
162 "Failed to set rx packet interface version");
163 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
169 setsockopt (*fd, SOL_PACKET, PACKET_LOSS, &opt,
sizeof (opt))) < 0)
172 "Failed to set packet tx ring error handling option");
173 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
178 setsockopt (*fd, SOL_PACKET, PACKET_RX_RING, rx_req, req_sz)) < 0)
181 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
186 setsockopt (*fd, SOL_PACKET, PACKET_TX_RING, tx_req, req_sz)) < 0)
189 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
194 mmap (
NULL, ring_sz, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_LOCKED, *fd,
196 if (*ring == MAP_FAILED)
199 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
216 int ret, fd = -1, fd2 = -1;
217 struct tpacket_req *rx_req = 0;
218 struct tpacket_req *tx_req = 0;
230 u8 *host_if_name_dup =
vec_dup (host_if_name);
231 int host_if_index = -1;
238 return VNET_API_ERROR_IF_ALREADY_EXISTS;
257 if ((fd2 = socket (AF_UNIX, SOCK_DGRAM, 0)) < 0)
260 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
264 clib_memcpy (ifr.ifr_name, (
const char *) host_if_name,
266 if ((ret = ioctl (fd2, SIOCGIFINDEX, &ifr)) < 0)
270 return VNET_API_ERROR_INVALID_INTERFACE;
273 host_if_index = ifr.ifr_ifindex;
274 if ((ret = ioctl (fd2, SIOCGIFFLAGS, &ifr)) < 0)
280 if (!(ifr.ifr_flags & IFF_UP))
282 ifr.ifr_flags |= IFF_UP;
283 if ((ret = ioctl (fd2, SIOCSIFFLAGS, &ifr)) < 0)
310 apif->
tx_ring = ring + rx_req->tp_block_size * rx_req->tp_block_nr;
324 template.file_descriptor = fd;
325 template.private_data = if_index;
339 rnd = (
u32) (now * 1e6);
353 memset (apif, 0,
sizeof (*apif));
358 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
409 return VNET_API_ERROR_SYSCALL_ERROR_1;
427 ring_sz = apif->
rx_req->tp_block_size * apif->
rx_req->tp_block_nr +
428 apif->
tx_req->tp_block_size * apif->
tx_req->tp_block_nr;
429 if (munmap (apif->
rx_ring, ring_sz))
431 "Host interface %s could not free rx/tx ring",
464 return VNET_API_ERROR_INVALID_INTERFACE;
484 vec_add2 (r_af_packet_ifs, af_packet_if, 1);
494 *out_af_packet_ifs = r_af_packet_ifs;
vlib_log_class_t vlib_log_register_class(char *class, char *subclass)
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
#define UNIX_FILE_EVENT_EDGE_TRIGGERED
u8 * format_clib_error(u8 *s, va_list *va)
static void clib_file_del(clib_file_main_t *um, clib_file_t *f)
#define vlib_log_warn(...)
clib_error_t * vnet_hw_interface_set_flags(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
uword * pending_input_bitmap
void ethernet_delete_interface(vnet_main_t *vnm, u32 hw_if_index)
int af_packet_set_l4_cksum_offload(vlib_main_t *vm, u32 sw_if_index, u8 set)
vnet_main_t * vnet_get_main(void)
static vnet_hw_interface_t * vnet_get_sup_hw_interface(vnet_main_t *vnm, u32 sw_if_index)
#define AF_PACKET_TX_BLOCK_NR
uword mhash_unset(mhash_t *h, void *key, uword *old_value)
static f64 vlib_time_now(vlib_main_t *vm)
struct tpacket_req * tx_req
static vnet_hw_interface_t * vnet_get_hw_interface(vnet_main_t *vnm, u32 hw_if_index)
int af_packet_dump_ifs(af_packet_if_detail_t **out_af_packet_ifs)
#define AF_PACKET_RX_FRAME_NR
#define vec_add2(V, P, N)
Add N elements to end of vector V, return pointer to new elements in P.
static void mhash_init_vec_string(mhash_t *h, uword n_value_bytes)
static uword * clib_bitmap_set(uword *ai, uword i, uword value)
Sets the ith bit of a bitmap to new_value Removes trailing zeros from the bitmap. ...
struct tpacket_req * rx_req
#define VNET_HW_INTERFACE_FLAG_LINK_UP
#define vec_validate_aligned(V, I, A)
Make sure vector is long enough for given index (no header, specified alignment)
#define pool_get(P, E)
Allocate an object E from a pool P (unspecified alignment).
clib_error_t * clib_sysfs_write(char *file_name, char *fmt,...)
clib_file_function_t * read_function
static vnet_sw_interface_t * vnet_get_hw_sw_interface(vnet_main_t *vnm, u32 hw_if_index)
af_packet_if_t * interfaces
memset(h->entries, 0, sizeof(h->entries[0])*entries)
#define AF_PACKET_TX_BLOCK_SIZE
#define VLIB_INIT_FUNCTION(x)
static_always_inline void vnet_device_input_set_interrupt_pending(vnet_main_t *vnm, u32 hw_if_index, u16 queue_id)
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
clib_file_main_t file_main
#define vlib_log_debug(...)
static void clib_spinlock_init(clib_spinlock_t *p)
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
format_function_t format_af_packet_device_name
uword mhash_set_mem(mhash_t *h, void *key, uword *new_value, uword *old_value)
#define pool_put(P, E)
Free an object E in pool P.
#define vec_dup(V)
Return copy of vector (no header, no alignment)
#define AF_PACKET_RX_BLOCK_NR
vlib_log_class_t log_class
log class
#define VNET_HW_INTERFACE_FLAG_SUPPORTS_INT_MODE
struct tpacket_req tpacket_req_t
#define vec_free(V)
Free vector's memory (no header).
#define clib_memcpy(a, b, c)
#define AF_PACKET_RX_BLOCK_SIZE
#define ETHERNET_INTERFACE_FLAG_MTU
#define VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD
u32 per_interface_next_index
vlib_node_registration_t af_packet_input_node
(constructor) VLIB_REGISTER_NODE (af_packet_input_node)
af_packet_main_t af_packet_main
void vnet_hw_interface_assign_rx_thread(vnet_main_t *vnm, u32 hw_if_index, u16 queue_id, uword thread_index)
static uword * mhash_get(mhash_t *h, const void *key)
static uword clib_file_add(clib_file_main_t *um, clib_file_t *template)
clib_error_t * ethernet_register_interface(vnet_main_t *vnm, u32 dev_class_index, u32 dev_instance, u8 *address, u32 *hw_if_index_return, ethernet_flag_change_function_t flag_change)
mhash_t if_index_by_host_if_name
unsigned int if_nametoindex(const char *ifname)
vnet_device_class_t af_packet_device_class
static clib_error_t * af_packet_fd_read_ready(clib_file_t *uf)
#define AF_PACKET_TX_FRAME_SIZE
static int create_packet_v2_sock(int host_if_index, tpacket_req_t *rx_req, tpacket_req_t *tx_req, int *fd, u8 **ring)
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
#define AF_PACKET_RX_FRAME_SIZE
#define clib_error_free(e)
int vnet_hw_interface_unassign_rx_thread(vnet_main_t *vnm, u32 hw_if_index, u16 queue_id)
static u32 random_u32(u32 *seed)
32-bit random number generator
static vlib_thread_main_t * vlib_get_thread_main()
#define vec_foreach(var, vec)
Vector iterator.
static clib_error_t * af_packet_init(vlib_main_t *vm)
#define vlib_log_err(...)
static int is_bridge(const u8 *host_if_name)
int vnet_hw_interface_set_rx_mode(vnet_main_t *vnm, u32 hw_if_index, u16 queue_id, vnet_hw_interface_rx_mode mode)
static u32 af_packet_eth_flag_change(vnet_main_t *vnm, vnet_hw_interface_t *hi, u32 flags)
int af_packet_create_if(vlib_main_t *vm, u8 *host_if_name, u8 *hw_addr_set, u32 *sw_if_index)
#define CLIB_CACHE_LINE_BYTES
static void vnet_hw_interface_set_input_node(vnet_main_t *vnm, u32 hw_if_index, u32 node_index)
#define AF_PACKET_TX_FRAME_NR
int af_packet_delete_if(vlib_main_t *vm, u8 *host_if_name)