66d06757d9
1. Use c_index and ring->c_index to determine how many TxCBs/TxBDs are
ready for cleanup
- c_index = the current value of TDMA_CONS_INDEX
- TDMA_CONS_INDEX is HW-incremented and auto-wraparound (0x0-0xFFFF)
- ring->c_index = __bcmgenet_tx_reclaim() cleaned up to this point on
the previous invocation
2. Add bcmgenet_tx_ring->clean_ptr
- index of the next TxCB to be cleaned
- incremented as TxCBs/TxBDs are processed
- value always in range [ring->cb_ptr, ring->end_ptr]
3. Fix incrementing of dev->stats.tx_packets
- should be incremented only when tx_cb_ptr->skb != NULL
These changes simplify __bcmgenet_tx_reclaim(). Furthermore, Tx ring size
can now be any value.
With the old code, Tx ring size had to be a power-of-2:
num_tx_bds = ring->size;
c_index &= (num_tx_bds - 1);
last_c_index &= (num_tx_bds - 1);
Signed-off-by: Petri Gynther <pgynther@google.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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| .. | ||
| Makefile | ||
| bcmgenet.c | ||
| bcmgenet.h | ||
| bcmgenet_wol.c | ||
| bcmmii.c | ||