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make rx_head visible (in case you want to test if there are packets

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This commit is contained in:
Mariano Alvira 2010-03-19 22:31:24 -04:00
parent 5b713a1f26
commit 67db72908a
2 changed files with 8 additions and 1 deletions
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2
lib/include/maca.h
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@ -128,6 +128,8 @@ volatile packet_t* get_free_packet(void);
void free_packet(volatile packet_t *p);
void free_all_packets(void);
extern volatile packet_t *rx_head;
/* set_fcs_mode(NO_FCS) to disable checksum filtering */
extern volatile uint8_t fcs_mode;
#define set_fcs_mode(x) fcs_mode = (x)

7
lib/maca.c
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@ -29,7 +29,12 @@
#define reg(x) (*(volatile uint32_t *)(x))
static volatile packet_t packet_pool[NUM_PACKETS];
static volatile packet_t *free_head, *rx_head, *rx_end, *tx_head, *tx_end, *dma_tx, *dma_rx = 0;
static volatile packet_t *free_head, *rx_end, *tx_head, *tx_end, *dma_tx, *dma_rx = 0;
/* rx_head is visible to the outside */
/* so you can peek at it and see if there is data */
/* waiting for you */
volatile packet_t *rx_head;
/* used for ack recpetion if the packet_pool goes empty */
/* doesn't go back into the pool when freed */