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UPSTREAM: igb: set max size RX buffer when store bad packet is enabled

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commit bb5ed01cd2 upstream.

Increase the RX buffer size to 3K when the SBP bit is on. The size of
the RX buffer determines the number of pages allocated which may not
be sufficient for receive frames larger than the set MTU size.

Bug: 306483516
Cc: stable@vger.kernel.org
Fixes: 89eaefb61d ("igb: Support RX-ALL feature flag.")
Reported-by: Manfred Rudigier <manfred.rudigier@omicronenergy.com>
Signed-off-by: Radoslaw Tyl <radoslawx.tyl@intel.com>
Tested-by: Arpana Arland <arpanax.arland@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit be7353af5b)
Signed-off-by: Lee Jones <joneslee@google.com>
Change-Id: I3f05b369cd9ac24643af3e37e2ce1d099c63bc02
This commit is contained in:
Radoslaw Tyl
2023-08-24 13:46:19 -07:00
committed by Lee Jones
parent 7d13770cb8
commit 04a0c46bb3
1 changed files with 7 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/net/ethernet/intel/igb/igb_main.c
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@@ -4737,6 +4737,10 @@ void igb_configure_rx_ring(struct igb_adapter *adapter,
static void igb_set_rx_buffer_len(struct igb_adapter *adapter,
struct igb_ring *rx_ring)
{
#if (PAGE_SIZE < 8192)
struct e1000_hw *hw = &adapter->hw;
#endif
/* set build_skb and buffer size flags */
clear_ring_build_skb_enabled(rx_ring);
clear_ring_uses_large_buffer(rx_ring);
@@ -4747,10 +4751,9 @@ static void igb_set_rx_buffer_len(struct igb_adapter *adapter,
set_ring_build_skb_enabled(rx_ring);
#if (PAGE_SIZE < 8192)
if (adapter->max_frame_size <= IGB_MAX_FRAME_BUILD_SKB)
return;
set_ring_uses_large_buffer(rx_ring);
if (adapter->max_frame_size > IGB_MAX_FRAME_BUILD_SKB ||
rd32(E1000_RCTL) & E1000_RCTL_SBP)
set_ring_uses_large_buffer(rx_ring);
#endif
}