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44 CLIB_CACHE_LINE_ALIGN_MARK(cacheline0);
51 u32 per_interface_next_index;
58 struct netmap_if * nifp;
70 } netmap_mem_region_t;
73 CLIB_CACHE_LINE_ALIGN_MARK(cacheline0);
74 netmap_if_t * interfaces;
76 /* bitmap of pending rx interfaces */
77 uword * pending_input_bitmap;
82 /* hash of host interface names */
83 mhash_t if_index_by_host_if_name;
85 /* vector of memory regions */
86 netmap_mem_region_t * mem_regions;
89 netmap_main_t netmap_main;
90 extern vnet_device_class_t netmap_device_class;
91 extern vlib_node_registration_t netmap_input_node;
93 int netmap_create_if(vlib_main_t * vm, u8 * host_if_name, u8 * hw_addr_set, u8 is_pipe, u8 is_master);
94 int netmap_delete_if(vlib_main_t * vm, u8 * host_if_name);
97 /* Macros and helper functions from sys/net/netmap_user.h */
101 #define _NETMAP_OFFSET(type, ptr, offset) \
102 ((type)(void *)((char *)(ptr) + (offset)))
104 #define NETMAP_IF(_base, _ofs) _NETMAP_OFFSET(struct netmap_if *, _base, _ofs)
106 #define NETMAP_TXRING(nifp, index) _NETMAP_OFFSET(struct netmap_ring *, \
107 nifp, (nifp)->ring_ofs[index] )
109 #define NETMAP_RXRING(nifp, index) _NETMAP_OFFSET(struct netmap_ring *, \
110 nifp, (nifp)->ring_ofs[index + (nifp)->ni_tx_rings + 1] )
112 #define NETMAP_BUF(ring, index) \
113 ((char *)(ring) + (ring)->buf_ofs + ((index)*(ring)->nr_buf_size))
115 #define NETMAP_BUF_IDX(ring, buf) \
116 ( ((char *)(buf) - ((char *)(ring) + (ring)->buf_ofs) ) / \
117 (ring)->nr_buf_size )
119 static inline uint32_t
120 nm_ring_next(struct netmap_ring *ring, uint32_t i)
122 return ( PREDICT_FALSE(i + 1 == ring->num_slots) ? 0 : i + 1);
127 * Return 1 if we have pending transmissions in the tx ring.
128 * When everything is complete ring->head = ring->tail + 1 (modulo ring size)
131 nm_tx_pending(struct netmap_ring *ring)
133 return nm_ring_next(ring, ring->tail) != ring->head;
136 static inline uint32_t
137 nm_ring_space(struct netmap_ring *ring)
139 int ret = ring->tail - ring->cur;
141 ret += ring->num_slots;