From 4f0aeb1e967d1039d7988aaf84d087916bac30ea Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Wed, 3 Sep 2014 13:34:10 +0000 Subject: e1000: move e1000_tbi_adjust_stats to where its used ... and make it static. Signed-off-by: Florian Westphal Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/e1000/e1000_main.c | 77 +++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) (limited to 'drivers/net/ethernet/intel/e1000/e1000_main.c') diff --git a/drivers/net/ethernet/intel/e1000/e1000_main.c b/drivers/net/ethernet/intel/e1000/e1000_main.c index ad3d5d12173f..fe2b9ad83cb5 100644 --- a/drivers/net/ethernet/intel/e1000/e1000_main.c +++ b/drivers/net/ethernet/intel/e1000/e1000_main.c @@ -3980,6 +3980,83 @@ static void e1000_receive_skb(struct e1000_adapter *adapter, u8 status, napi_gro_receive(&adapter->napi, skb); } +/** + * e1000_tbi_adjust_stats + * @hw: Struct containing variables accessed by shared code + * @frame_len: The length of the frame in question + * @mac_addr: The Ethernet destination address of the frame in question + * + * Adjusts the statistic counters when a frame is accepted by TBI_ACCEPT + */ +static void e1000_tbi_adjust_stats(struct e1000_hw *hw, + struct e1000_hw_stats *stats, + u32 frame_len, const u8 *mac_addr) +{ + u64 carry_bit; + + /* First adjust the frame length. */ + frame_len--; + /* We need to adjust the statistics counters, since the hardware + * counters overcount this packet as a CRC error and undercount + * the packet as a good packet + */ + /* This packet should not be counted as a CRC error. */ + stats->crcerrs--; + /* This packet does count as a Good Packet Received. */ + stats->gprc++; + + /* Adjust the Good Octets received counters */ + carry_bit = 0x80000000 & stats->gorcl; + stats->gorcl += frame_len; + /* If the high bit of Gorcl (the low 32 bits of the Good Octets + * Received Count) was one before the addition, + * AND it is zero after, then we lost the carry out, + * need to add one to Gorch (Good Octets Received Count High). + * This could be simplified if all environments supported + * 64-bit integers. + */ + if (carry_bit && ((stats->gorcl & 0x80000000) == 0)) + stats->gorch++; + /* Is this a broadcast or multicast? Check broadcast first, + * since the test for a multicast frame will test positive on + * a broadcast frame. + */ + if (is_broadcast_ether_addr(mac_addr)) + stats->bprc++; + else if (is_multicast_ether_addr(mac_addr)) + stats->mprc++; + + if (frame_len == hw->max_frame_size) { + /* In this case, the hardware has overcounted the number of + * oversize frames. + */ + if (stats->roc > 0) + stats->roc--; + } + + /* Adjust the bin counters when the extra byte put the frame in the + * wrong bin. Remember that the frame_len was adjusted above. + */ + if (frame_len == 64) { + stats->prc64++; + stats->prc127--; + } else if (frame_len == 127) { + stats->prc127++; + stats->prc255--; + } else if (frame_len == 255) { + stats->prc255++; + stats->prc511--; + } else if (frame_len == 511) { + stats->prc511++; + stats->prc1023--; + } else if (frame_len == 1023) { + stats->prc1023++; + stats->prc1522--; + } else if (frame_len == 1522) { + stats->prc1522++; + } +} + /** * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy * @adapter: board private structure -- cgit v1.2.3