net: aquantia: do not pass lro session with invalid tcp checksum

[ Upstream commit d08b9a0a3ebdf71b0aabe576c7dd48e57e80e0f0 ]

Individual descriptors on LRO TCP session should be checked
for CRC errors. It was discovered that HW recalculates
L4 checksums on LRO session and does not break it up on bad L4
csum.

Thus, driver should aggregate HW LRO L4 statuses from all individual
buffers of LRO session and drop packet if one of the buffers has bad
L4 checksum.

Fixes: f38f1ee8aeb2 ("net: aquantia: check rx csum for all packets in LRO session")
Signed-off-by: Dmitry Bogdanov <dmitry.bogdanov@aquantia.com>
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
index 3901d7994ca1571500253855c8d613706eacfa80..76bdbe1596d62f10ce3e60ed0de1f1e2175dc435 100644 (file)
--- a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
@@ -313,6 +313,7 @@ int aq_ring_rx_clean(struct aq_ring_s *self,
                                        break;
 
                                buff->is_error |= buff_->is_error;
+                               buff->is_cso_err |= buff_->is_cso_err;
 
                        } while (!buff_->is_eop);
 
@@ -320,7 +321,7 @@ int aq_ring_rx_clean(struct aq_ring_s *self,
                                err = 0;
                                goto err_exit;
                        }
-                       if (buff->is_error) {
+                       if (buff->is_error || buff->is_cso_err) {
                                buff_ = buff;
                                do {
                                        next_ = buff_->next,