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net: aquantia: check rx csum for all packets in LRO session 

Atlantic hardware does not aggregate nor breaks LRO sessions
with bad csum packets. This means driver should take care of that.

If in LRO session there is a non-first descriptor with invalid
checksum (L2/L3/L4), the driver must account this information
in csum application logic.

Fixes: 018423e90b ("net: ethernet: aquantia: Add ring support code")
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: Dmitry Bogdanov <dmitry.bogdanov@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dmitry Bogdanov 2019-05-25 09:58:01 +00:00 committed by David S. Miller
parent 31bafc49a7
commit f38f1ee8ae
1 changed files with 31 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
drivers/net/ethernet/aquantia/atlantic/aq_ring.c
View File

@ -299,35 +299,47 @@ int aq_ring_rx_clean(struct aq_ring_s *self,
unsigned int i = 0U;
u16 hdr_len;
if (buff->is_error)
continue;
if (buff->is_cleaned)
continue;
if (!buff->is_eop) {
for (next_ = buff->next,
buff_ = &self->buff_ring[next_]; true;
next_ = buff_->next,
buff_ = &self->buff_ring[next_]) {
buff_ = buff;
do {
next_ = buff_->next,
buff_ = &self->buff_ring[next_];
is_rsc_completed =
aq_ring_dx_in_range(self->sw_head,
next_,
self->hw_head);
if (unlikely(!is_rsc_completed)) {
is_rsc_completed = false;
if (unlikely(!is_rsc_completed))
break;
}
if (buff_->is_eop)
break;
}
buff->is_error |= buff_->is_error;
} while (!buff_->is_eop);
if (!is_rsc_completed) {
err = 0;
goto err_exit;
}
if (buff->is_error) {
buff_ = buff;
do {
next_ = buff_->next,
buff_ = &self->buff_ring[next_];
buff_->is_cleaned = true;
} while (!buff_->is_eop);
++self->stats.rx.errors;
continue;
}
}
if (buff->is_error) {
++self->stats.rx.errors;
continue;
}
dma_sync_single_range_for_cpu(aq_nic_get_dev(self->aq_nic),
@ -390,6 +402,12 @@ int aq_ring_rx_clean(struct aq_ring_s *self,
AQ_CFG_RX_FRAME_MAX);
page_ref_inc(buff_->rxdata.page);
buff_->is_cleaned = 1;
buff->is_ip_cso &= buff_->is_ip_cso;
buff->is_udp_cso &= buff_->is_udp_cso;
buff->is_tcp_cso &= buff_->is_tcp_cso;
buff->is_cso_err |= buff_->is_cso_err;
} while (!buff_->is_eop);
}
}