diff options
| author |   Ben Hutchings <bhutchings@solarflare.com> | 2009-11-28 05:36:29 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2009-11-29 00:01:21 -0800 |
| commit | c1ac403bfa240617da2bce861ea5c3a907a65612 (patch) | |
| tree | 340772ce3f0ca211ad93973cabd70bb08ca38932 /drivers/net/sfc/falcon.c | |
| parent | sfc: Move descriptor cache base addresses to struct efx_nic_type (diff) | |
| download | linux-dev-c1ac403bfa240617da2bce861ea5c3a907a65612.tar.xz linux-dev-c1ac403bfa240617da2bce861ea5c3a907a65612.zip | |
sfc: Clean up RX event handling
Add 'likely' hint to test of rx_checksum_enabled.
Don't count IP fragments; the IP stack can do that.
Do count non-matching multicast packets.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/sfc/falcon.c')
| -rw-r--r-- | drivers/net/sfc/falcon.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/net/sfc/falcon.c b/drivers/net/sfc/falcon.c index 539d0223b434..2f219ce61392 100644 --- a/drivers/net/sfc/falcon.c +++ b/drivers/net/sfc/falcon.c @@ -734,7 +734,7 @@ static void falcon_handle_rx_not_ok(struct efx_rx_queue *rx_queue, bool rx_ev_tcp_udp_chksum_err, rx_ev_eth_crc_err; bool rx_ev_frm_trunc, rx_ev_drib_nib, rx_ev_tobe_disc; bool rx_ev_other_err, rx_ev_pause_frm; - bool rx_ev_ip_frag_err, rx_ev_hdr_type, rx_ev_mcast_pkt; + bool rx_ev_hdr_type, rx_ev_mcast_pkt; unsigned rx_ev_pkt_type; rx_ev_hdr_type = EFX_QWORD_FIELD(*event, FSF_AZ_RX_EV_HDR_TYPE); @@ -743,7 +743,6 @@ static void falcon_handle_rx_not_ok(struct efx_rx_queue *rx_queue, rx_ev_pkt_type = EFX_QWORD_FIELD(*event, FSF_AZ_RX_EV_PKT_TYPE); rx_ev_buf_owner_id_err = EFX_QWORD_FIELD(*event, FSF_AZ_RX_EV_BUF_OWNER_ID_ERR); - rx_ev_ip_frag_err = EFX_QWORD_FIELD(*event, FSF_AZ_RX_EV_IP_FRAG_ERR); rx_ev_ip_hdr_chksum_err = EFX_QWORD_FIELD(*event, FSF_AZ_RX_EV_IP_HDR_CHKSUM_ERR); rx_ev_tcp_udp_chksum_err = EFX_QWORD_FIELD(*event, @@ -771,8 +770,6 @@ static void falcon_handle_rx_not_ok(struct efx_rx_queue *rx_queue, else if (rx_ev_tcp_udp_chksum_err) ++rx_queue->channel->n_rx_tcp_udp_chksum_err; } - if (rx_ev_ip_frag_err) - ++rx_queue->channel->n_rx_ip_frag_err; /* The frame must be discarded if any of these are true. */ *discard = (rx_ev_eth_crc_err | rx_ev_frm_trunc | rx_ev_drib_nib | @@ -855,7 +852,7 @@ static void falcon_handle_rx_event(struct efx_channel *channel, * UDP/IPv4, then we can rely on the hardware checksum. */ checksummed = - efx->rx_checksum_enabled && + likely(efx->rx_checksum_enabled) && (rx_ev_hdr_type == FSE_AB_RX_EV_HDR_TYPE_IPV4_TCP || rx_ev_hdr_type == FSE_AB_RX_EV_HDR_TYPE_IPV4_UDP); } else { @@ -870,8 +867,10 @@ static void falcon_handle_rx_event(struct efx_channel *channel, unsigned int rx_ev_mcast_hash_match = EFX_QWORD_FIELD(*event, FSF_AZ_RX_EV_MCAST_HASH_MATCH); - if (unlikely(!rx_ev_mcast_hash_match)) + if (unlikely(!rx_ev_mcast_hash_match)) { + ++channel->n_rx_mcast_mismatch; discard = true; + } } channel->irq_mod_score += 2; |